CN115995592A - Stacking equipment, assembly production line of battery pack, assembly method and battery pack - Google Patents

Abstract

The invention relates to the technical field of batteries, and provides a stacking device, an assembly production line and an assembly method of a battery pack, and a battery pack. The stacking device is used to stack multiple batteries to form a battery pack. The stacking device includes: a base, which is used to place the batteries; a positioning mechanism, which includes a positioning surface, which is used to fit the stacking surface of the battery; an alignment mechanism, to align The mechanism is arranged on the base, and is used to fit the side of each battery so that each battery is aligned; wherein, the positioning mechanism is used to clamp the aligned batteries. Multiple batteries are stacked on the base, and the alignment of each battery is realized through the alignment mechanism, and the positioning mechanism is used to realize the clamping of each aligned battery, thereby realizing the stacking of the battery pack.

Description

Stacking equipment, battery pack assembly line and assembly method, and battery pack

technical field

The invention relates to the technical field of batteries, in particular to a stacking device, an assembly production line and an assembly method of a battery pack, and a battery pack.

Background technique

In the related art, the battery pack is formed by stacking a plurality of batteries. When stacking the batteries, there is no formed stacking auxiliary device in the prior art to improve the stacking efficiency of the batteries.

Contents of the invention

The invention provides a stacking device, an assembly line and an assembly method of a battery pack, and the battery pack to assist in realizing the stacking of the battery pack.

According to a first aspect of the present invention, there is provided a stacking device for stacking a plurality of batteries to form a battery pack, the stacking device includes:

The base, the base is used to place the battery;

a positioning mechanism, the positioning mechanism includes a positioning surface, and the positioning surface is used to fit the stacking surface of the battery;

an alignment mechanism, the alignment mechanism is arranged on the base, and is used to fit the sides of each battery so that each battery is aligned;

Among them, the positioning mechanism is used to clamp the aligned batteries.

The stacking device in the embodiment of the present invention includes a base, a positioning mechanism, and an alignment mechanism. Multiple batteries are stacked on the base, and the alignment of each battery is realized through the alignment mechanism. Subsequently, the positioning mechanism is used to realize the clamping of the aligned batteries. , so as to realize the stacking of battery packs.

According to a second aspect of the present invention, there is provided an assembly line for battery packs, including the above-mentioned stacking equipment.

The battery pack assembly line of the embodiment of the present invention includes stacking equipment. The stacking device includes a base, a positioning mechanism, and an alignment mechanism. Multiple batteries are stacked on the base, and the alignment of each battery is realized through the alignment mechanism. Subsequently, the positioning mechanism is used to clamp the aligned batteries to realize the battery. Set of stacks.

According to a third aspect of the present invention, there is provided a method for assembling a battery pack, comprising:

providing batteries with bus bars;

Stacking a plurality of batteries so that the first busbar of one adjacent battery and the second busbar of another battery are attached to each other;

Align the individual batteries;

Clamp the aligned multiple batteries.

The assembly method of the battery pack in the embodiment of the present invention stacks each battery with a bus bar, and makes the first bus bar and the second bus bar of two adjacent batteries stick to each other, and then aligns the multiple batteries and completes the alignment. Clamping of multiple cells to enable stacking of individual cells.

According to a fourth aspect of the present invention, a battery pack is provided, including the battery pack assembled by the above battery pack assembly method.

The battery pack in the embodiment of the present invention is assembled by using the above battery pack assembly method, and the battery pack assembly production line includes stacking equipment. The assembly method of the battery pack stacks each battery with bus bars, and makes the first bus bar and the second bus bar of two adjacent batteries correspond to each other, and then aligns multiple batteries and completes the clamping of multiple batteries , to realize the stacking of individual cells.

Description of drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following figures. Components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components may be arranged differently as known in the art. In addition, in the drawings, the same reference numerals denote the same or similar components in the respective drawings. in:

Fig. 1 is a schematic diagram of the application structure of a first state of a stacking device shown according to an exemplary embodiment;

Fig. 2 is a schematic diagram of an application structure of a second state of a stacking device according to an exemplary embodiment;

Fig. 3 is a schematic diagram of a cooperation structure between a positioning slider and a battery of a stacking device according to an exemplary embodiment;

Fig. 4 is a schematic diagram showing a cooperative structure of an alignment mechanism of a stacking device and batteries according to an exemplary embodiment;

Fig. 5 is a schematic diagram of a partial cooperation structure between an alignment mechanism of a stacking device and a battery according to an exemplary embodiment;

Fig. 6 is a schematic structural view of an alignment mechanism of a stacking device according to an exemplary embodiment;

Fig. 7 is a schematic diagram of a partial application mechanism of an alignment mechanism of a stacking device according to an exemplary embodiment;

Fig. 8 is a schematic diagram of a partial application structure of a first state of a stacking device according to an exemplary embodiment;

Fig. 9 is a schematic diagram of a partial application structure of a first state of a stacking device according to an exemplary embodiment;

Fig. 10 is a schematic diagram of a partial application structure of a second state of a stacking device according to an exemplary embodiment;

Fig. 11 is a schematic diagram of a partial application structure of a second state of a stacking device according to an exemplary embodiment;

Fig. 12 is a schematic diagram of a third application structure of a stacking device according to an exemplary embodiment;

Fig. 13 is a schematic diagram of a fourth application structure of a stacking device according to an exemplary embodiment;

Fig. 14 is a schematic structural view of a limiter of a stacking device according to an exemplary embodiment;

Fig. 15 is a schematic flowchart of a method for assembling a battery pack according to an exemplary embodiment.

The reference signs are explained as follows:

1. Battery; 2. First bus bar; 3. Second bus bar; 4. Circuit board; 5. Signal acquisition terminal; 6. Shell; 7. Connecting part;

100, base; 101, positioning slider; 102, bottom plate; 103, substrate; 104, first guide rail; 105, connecting block; 106, second guide rail; 107, grasping part;

110, the first positioning mechanism; 111, the first positioning surface; 120, the second positioning mechanism; 121, the second positioning surface; 122, the driving mechanism;

130. Alignment mechanism; 131. Drive plate; 1311. Datum plane; 132. Protrusion;

140. The first welding pressing mechanism; 141. The first connecting piece; 1411. The first connecting part; 1412. The second connecting part; 142. The first pressing block; 1421. The first avoidance space; 1422. The first pressing Department; 143, the first fastener; 144, the first elastic member;

150. The second welding pressing mechanism; 151. The second connecting piece; 1511. The third connecting part; 1512. The fourth connecting part; 152. The second pressing block; 1521. The first connecting body; 1522. The second pressing 1523, the third pressing part; 153, the third pressing block; 1531, the second connecting body; 1532, the fourth pressing part; 1533, the fifth pressing part; 154, the second fastener; 155, The second elastic part; 156, the gap; 157, the second avoidance space;

160, limit piece; 161, adapter part; 1611, first shaft section; 1612, second shaft section; 162, waist-shaped hole; 163, circular hole; 164, handle.

Detailed ways

The following will clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are for illustrative purposes only, and are not intended to limit the protection scope of the present disclosure, so it should be understood that various modifications can be made to the exemplary embodiments without departing from the protection scope of the present disclosure. modifications and changes.

In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "plurality" is means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the" or "an" are likewise intended to mean one of a possible plurality of such objects.

Unless otherwise specified or explained, the terms "connected" and "fixed" should be interpreted in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or integral connection, or electrical connection, or Connection; "connection" can be a direct connection or an indirect connection through an intermediary. Those skilled in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

Furthermore, in the description of the present disclosure, it should be understood that the orientation words such as "upper", "lower", "inner" and "outer" described in the exemplary embodiments of the present disclosure are based on the angles shown in the drawings It should not be construed as limiting the example embodiments of the present disclosure. It also needs to be understood that in this context, when an element or feature is referred to as being "on," "under," or "inside" or "outside" another element(s), it is not only a direct connection In other (one or more) elements "on", "under" or "inside", "outside", it can also be indirectly connected to another (one or more) elements "on", "under" or "outside" through intermediate elements inside and outside".

An embodiment of the present invention provides a stacking device. Please refer to FIGS. 1 to 14. The stacking device is used to stack a plurality of batteries 1 to form a battery pack. The stacking device includes: a base 100, which is used to place the batteries 1; The positioning mechanism, the positioning mechanism includes a positioning surface, the positioning surface is used to fit the stacking surface of the battery 1; the alignment mechanism 130, the alignment mechanism 130 is arranged on the base 100, and is used to fit the side of each battery 1, so that each battery 1 aligned; wherein, the positioning mechanism is used to clamp the aligned batteries 1 .

The stacking device in one embodiment of the present invention includes a base 100, a positioning mechanism, and an alignment mechanism 130. A plurality of batteries 1 are stacked on the base 100, and the alignment of each battery 1 is realized through the alignment mechanism 130. Subsequently, the positioning mechanism is used to realize the alignment. The clamping of the aligned individual cells 1 enables the stacking of the battery pack.

It should be noted that multiple batteries 1 are stacked on the base 100 . During the specific stacking process, a mechanical arm can be used to grasp the batteries 1 , so that each battery 1 is stacked on the base 100 in sequence. The stacking of each battery 1 on the base 100 may be horizontal stacking, or the stacking of each battery 1 on the base 100 may be vertical stacking. Horizontal stacking can be understood as that the stacking direction of the battery pack is parallel to the base 100 , at this time, the base 100 can be parallel to the horizontal reference plane, or the base 100 can be arranged obliquely to the horizontal reference plane. Vertical stacking can be understood as that the stacking direction of the battery pack is perpendicular to the base 100 .

In one embodiment, when each battery 1 is stacked vertically on the base 100, the positioning mechanism may include only the first positioning mechanism. After a plurality of batteries 1 are stacked vertically on the base 100, the alignment mechanism 130 After the alignment of each battery 1 is realized, each battery 1 can be compressed by the first positioning mechanism. In some embodiments, the positioning mechanism may include a first positioning mechanism and a second positioning mechanism, and the second positioning mechanism may be arranged on the base 100. After a plurality of batteries 1 are stacked vertically on the second positioning mechanism, the alignment After the mechanism 130 realizes the alignment of each battery 1 , each battery 1 can be compressed by the first positioning mechanism.

It should be noted that the first positioning mechanism and the second positioning mechanism can only be plates, and the first positioning mechanism can compress the battery 1 under the drive of the mechanical arm. In some embodiments, the first positioning mechanism is not excluded. The positioning mechanism can complete the pressing of the battery 1 only by its own gravity.

In one embodiment, as shown in FIG. 1 and FIG. 2 , the positioning mechanism includes: a first positioning mechanism 110, the first positioning mechanism 110 is arranged on the base 100, the first positioning mechanism 110 includes a first positioning surface 111; Mechanism 120, the second positioning mechanism 120 is arranged on the base 100, the second positioning mechanism 120 includes a second positioning surface 121, the first positioning surface 111 and the second positioning surface 121 are arranged oppositely; wherein, the first positioning mechanism 110 and the second positioning The mechanism 120 is relatively movably arranged to clamp a plurality of batteries 1 between the first positioning surface 111 and the second positioning surface 121 . When each battery 1 is horizontally stacked on the base 100 , the first positioning mechanism 110 and the second positioning mechanism 120 realize the positioning and clamping of multiple batteries 1 , thereby achieving reliable stacking of multiple batteries 1 .

In some embodiments, the first positioning mechanism 110 can be fixed on the base 100 , and the first stacked batteries 1 can be stacked close to the first positioning mechanism 110 . If the battery pack includes the casing 6, in the stacking process, one end plate of the casing 6 can be stacked first, at this time, the end plate can be attached to the first positioning mechanism 110, and then each battery 1 can be stacked along the end plate , and finally complete the stacking of the other end plate of the housing 6. At this time, the end plate is close to the second positioning mechanism 120, and moves in a direction close to the first positioning mechanism 110 through the second positioning mechanism 120, so that the other end plate drives Each battery 1 is moved to realize clamping of multiple batteries 1 .

In some embodiments, both the first positioning mechanism 110 and the second positioning mechanism 120 can be movably arranged relative to the base 100. After the stacking of the end plate and the battery 1 is completed, the first positioning mechanism 110 and the second positioning mechanism can be moved. The positioning mechanism 120 is used to clamp a plurality of batteries 1 .

In one embodiment, for the movement of the first positioning mechanism 110 or the second positioning mechanism 120, a driving mechanism 122 can be used for driving, and the driving mechanism 122 can be an electric mechanism, such as an electric push rod mechanism, or the driving mechanism 122 can be is a cylinder-piston mechanism, or the driving mechanism 122 may be a hydraulic piston mechanism. The telescopic rod of the driving mechanism 122 is drivingly connected with the first positioning mechanism 110 or the second positioning mechanism 120 , so as to drive the first positioning mechanism 110 or the second positioning mechanism 120 to move relative to the base 100 . The first positioning mechanism 110 or the second positioning mechanism 120 and the base 100 can be slidably matched by using a slide rail sliding block matching structure. In some embodiments, the driving mechanism 122 does not exclude the use of a manual driving structure, such as a screw structure and the like.

It should be noted that on the basis of ensuring that the first positioning surface 111 and the second positioning surface 121 are plane, the specific structure of the first positioning mechanism 110 or the second positioning mechanism 120 is not limited here.

In one embodiment, as shown in FIG. 3 , the base 100 is provided with a positioning slider 101 for placing the battery 1 , and the positioning slider 101 is movably arranged relative to the base 100 , so that when using the first positioning mechanism 110 and the second When the positioning mechanism 120 presses the battery pack, the battery 1 can drive the positioning slider 101 to move, so that there is no direct contact between the battery 1 and the base 100, or the friction between the battery 1 and the base 100 can be minimized .

In one embodiment, when multiple batteries 1 are arranged on the same positioning slider 101 , it is also necessary to ensure that the batteries 1 can move relative to the positioning slider 101 when pressing the batteries 1 .

In one embodiment, there are multiple positioning sliders 101, and each battery 1 corresponds to at least one positioning slider 101 along the direction perpendicular to the stacking direction of the battery pack; wherein, along the stacking direction of the battery pack, the positioning slider 101 The length that fits the battery 1 is not greater than the thickness of the battery 1, thus ensuring that each battery 1 corresponds to a separate positioning slider 101, so that the battery 1 can ensure that each battery does not need to move relative to the positioning slider 101. 1 between the reliable fit.

In one embodiment, the peripheral side of the battery 1 is provided with a flange 9, so along the stacking direction of the battery pack, the length of the positioning slider 101 attached to the battery 1 is not greater than the thickness of the battery 1 minus the flange. thickness, so as to ensure that the positioning slider 101 avoids the flange edge 9, as shown in FIG. 3 .

In one embodiment, each battery 1 may correspond to at least two positioning sliders 101 . At least two positioning sliders 101 corresponding to each battery 1 can be arranged along the length direction of the battery 1 , and the length direction of the battery 1 can be perpendicular to the stacking direction of the battery pack.

It should be noted that the positioning slider 101 may be provided with a slideway, and the base 100 may be provided with a slideway, and the cooperation between the slideway and the slideway ensures the reliable movement of the positioning slider 101 along the base 100 . The extending direction of the slide rail is the stacking direction of the battery pack.

In one embodiment, as shown in FIGS. 4 to 6 , the alignment mechanism 130 includes: a drive plate 131 disposed on the base 100 , the drive plate 131 includes a reference plane 1311 extending along the stacking direction of the battery pack at least two protrusions 132 , each protrusion 132 is arranged on the reference plane 1311 at intervals along the stacking direction of the battery pack, and is used to attach to the side of the battery 1 . Reliable alignment of each battery 1 of the battery pack is ensured by ensuring that the surface of each protrusion 132 attached to the side of the battery 1 is on the same plane, and each protrusion 132 is attached to the side of the battery 1 .

It should be noted that, since the reference surface 1311 of the drive plate 131 is provided with a plurality of protrusions 132 , the problem that some batteries 1 cannot be aligned due to a surface being attached to each battery 1 is avoided. In some embodiments, one protrusion 132 on the reference surface 1311 can contact at least two batteries 1 . In some embodiments, one protrusion 132 on the reference surface 1311 may only contact one battery 1 . When ensuring that the surface of each protrusion 132 that is used to be attached to the side of the battery 1 is on the same plane, the arrangement of multiple protrusions 132 is more adaptable, which can ensure the alignment of different types of batteries 1 .

In one embodiment, the direction in which the reference plane 1311 extends along the stacking direction of the battery pack can be the length direction of the reference plane 1311, and the reference plane 1311 also has a width direction, and the width direction of the reference plane 1311 is perpendicular to the length direction of the reference plane 1311 The length of the projection 132 along the width direction of the reference plane 1311 may be equal to the width of the reference plane 1311 , or the length of the protrusion 132 along the width direction of the reference plane 1311 may be smaller than the width of the reference plane 1311 . In some embodiments, it is not excluded that the length of the protrusion 132 along the width direction of the reference plane 1311 may be greater than the width of the reference plane 1311 .

It should be noted that the battery pack includes multiple batteries, and the direction in which the multiple batteries are arranged in sequence is the stacking direction of the battery pack.

In one embodiment, the protrusions 132 are arranged in one-to-one correspondence with the batteries 1, that is, when each battery 1 is aligned, each battery 1 corresponds to a protrusion 132, thereby ensuring that each protrusion 132 All can be in contact with one battery 1 , and on the basis of ensuring reliable alignment of each battery 1 , the range of use of the alignment mechanism 130 can be improved.

In one embodiment, the lengths of each protrusion 132 along the stacking direction of the battery pack are consistent, that is, the lengths of the plurality of protrusions 132 along the stacking direction of the battery pack are consistent, so that the alignment mechanism 130 can conveniently realize the adjustment of the thickness. Reliable alignment of identical individual cells 1 and facilitates the manufacture of protrusions 132 .

In one embodiment, the lengths of at least two protrusions 132 along the stacking direction of the battery pack are not the same, that is, the lengths of at least two protrusions 132 among the plurality of protrusions 132 may be different along the stacking direction of the battery pack. Some protrusions 132 can have the same length along the stacking direction of the battery pack, while other protrusions 132 can have different lengths along the stacking direction of the battery pack. This design can be adapted to the activity of each battery 1 when it is pressed. , so as to control the amount of activity of the battery 1.

In some embodiments, the lengths of the plurality of protrusions 132 along the stacking direction of the battery pack may be different. The length of the plurality of protrusions 132 along the stacking direction of the battery pack can gradually increase, and the pressing direction of the battery pack can be consistent with the stacking direction of the battery pack, so that when the battery 1 is pressed, the starting point of the pressing direction The battery 1 at can have the largest amount of activity, while the battery 1 at the end of the pressing direction can have the smallest amount of activity.

In one embodiment, along the stacking direction of the battery pack, the length of the protrusion 132 adjoining the side of the battery 1 is not greater than the thickness of the battery 1, thereby preventing one protrusion 132 from contacting two batteries 1, thereby improving Alignment degree of the alignment mechanism 130 to the battery 1 .

It should be noted that when one protrusion 132 is attached to multiple batteries 1, if the consistency of the batteries 1 is high, the alignment of each battery 1 can be guaranteed, but when the consistency of the batteries 1 is not high, When one protrusion 132 fits multiple batteries 1 , there may be a problem that the batteries 1 cannot be aligned. While one protrusion 132 is in contact with one battery 1 , since there is no connecting portion between the two protrusions 132 , manufacturing errors at adjacent positions of the two batteries 1 can be ignored, and the alignment of the batteries 1 can be improved to a certain extent.

In some embodiments, the peripheral side of the battery 1 may have a flange edge 9, that is, the protrusion 132 needs to avoid the flange edge 9 when the battery 1 is aligned. Therefore, each battery 1 needs to correspond to a protrusion 132 , at this time, along the stacking direction of the battery pack, the length of the protrusion 132 adjoining the side of the battery 1 is less than or equal to the thickness of the battery 1 minus the thickness of the flange 9 .

In one embodiment, as shown in FIG. 5 , along the stacking direction of the battery pack, the length of the projection 132 that fits the side of the battery 1 is a, the thickness of the battery 1 is b, and the thickness of the flange edge 9 of the battery 1 is is c, the maximum displacement of the battery 1 along the stacking direction of the battery pack is d, and a+d≤b-c. When the battery pack is pressed, some of the batteries 1 can move to ensure the reliable fit between the batteries 1. In this embodiment, the maximum displacement d of the battery 1 along the stacking direction of the battery pack is the flange edge The maximum distance between 9 and the protrusion 132, that is, the maximum value that the battery 1 can move along the pressing direction is d, so it is necessary to ensure that a+d≤b-c, so as to ensure that the protrusion 132 fits with the side of the battery 1, And there will be no interference with the flange edge 9 . In this embodiment, the protrusion 132 may be fixed relative to the driving plate 131 .

It should be noted that the protrusion 132 may have a rectangular structure. At this time, along the stacking direction of the battery pack, the length a of the protrusion 132 adhering to the side of the battery 1 is equal to the length a of the protrusion 132 along the stacking direction of the battery pack. length. In some embodiments, it is not excluded that the protrusion 132 is a boss-type structure, that is, the part where the protrusion 132 is connected to the drive plate 131 has a relatively large cross-sectional area, and in order to ensure that the protrusion 132 does not interfere with the flange edge 9, it is necessary to The cross-sectional area of the portion that ensures that the protrusion 132 is in contact with the side of the battery 1 is relatively small. Therefore, in this embodiment, the length a of the protrusion 132 in contact with the side of the battery 1 along the stacking direction of the battery pack is limited. .

In one embodiment, the protrusion 132 is movably arranged relative to the driving plate 131 along the stacking direction of the battery pack, so that when the battery pack is pressed, the battery 1 can drive the protrusion 132 to move. Therefore, as long as the protrusion 132 is ensured It is only necessary not to interfere with the flange side 9 of the battery 1. At this time, the thickness of the battery 1 minus the thickness of the flange side 9 can be equal to, along the stacking direction of the battery pack, the protrusion 132 is attached to the side of the battery 1. The length, that is, the length of the protrusion 132 can be maximized. In some embodiments, along the stacking direction of the battery pack, the length of the protrusion 132 adjoining the side of the battery 1 may also be less than the thickness of the battery 1 minus the thickness of the flange 9 .

When the battery 1 drives the positioning slider 101 to move, since the protrusion 132 is movable relative to the driving plate 131, friction between the protrusion 132 and the battery 1 can be avoided, and the alignment of the battery 1 can be ensured during the moving process.

It should be noted that the protrusion 132 moves relative to the drive plate 131, and the cooperation between the protrusion 132 and the drive plate 131 can be the cooperation form of a slider and a slideway, which can ensure the stability of the connection between the protrusion 132 and the drive plate 131 , and can ensure that the battery 1 can drive the protrusion 132 to move relative to the driving plate 131 .

In one embodiment, the driving plate 131 and the protrusion 132 can be two structures that are processed independently, and are connected after the independent processing is completed. At this time, the driving plate 131 and the protrusion 132 can be fixedly connected, that is, the protrusion 132 No movement relative to the drive plate 131 is possible. Alternatively, the protrusion 132 can move relative to the driving plate 131 , and the cooperation between the protrusion 132 and the driving plate 131 can be the cooperation between a slider and a slideway.

In one embodiment, the driving plate 131 and the protrusion 132 are integrally formed, which not only facilitates manufacturing, but also improves the stability of the structure.

In one embodiment, the alignment mechanism 130 includes: a drive plate 131, the drive plate 131 includes a reference surface 1311, and the reference surface 1311 extends along the stacking direction of the battery pack; a protrusion 132, the protrusion 132 is arranged on the reference surface 1311, for The side of the battery 1 is attached; wherein, along the stacking direction of the battery pack, the length of the projection 132 attached to the side of the battery 1 is not greater than the thickness of the battery 1 . Since along the stacking direction of the battery pack, the length of the projection 132 adjoining the side of the battery 1 is not greater than the thickness of the battery 1, the projection 132 can be attached to the battery 1 alone, thereby improving the adaptability of the alignment mechanism 130 , so as to meet the alignment requirements of different batteries 1 . In this embodiment, a protrusion 132 may be disposed on the driving plate 131 .

In one embodiment, as shown in FIG. 7, the alignment mechanism 130 further includes: a base plate 103, the base plate 103 is detachably mounted on the base 100, and the drive plate 131 is arranged on the base plate, so that the alignment mechanism 130 can be detached from the base 100. to make room for other institutions.

In one embodiment, the base plate 103 of the alignment mechanism 130 is movably arranged relative to the base 100 , so that the protrusion 132 on the drive plate 131 can fit the battery 1 , thereby ensuring reliable alignment of each battery 1 .

In one embodiment, the base plate 103 of the alignment mechanism 130 is movably arranged along the stacking direction of the battery pack, so that a clearance space can be formed between the alignment mechanism 130 and the battery pack for placing other structures.

In one embodiment, the base plate 103 of the alignment mechanism 130 is movably arranged in a direction close to or away from the battery pack, so that the protrusion 132 on the drive plate 131 fits the battery 1, thereby ensuring reliable alignment of each battery 1 .

In one embodiment, as shown in FIG. 7 , the stacking device further includes: a base plate 102 on which the base plate 103 is disposed, a first guide rail 104 is disposed on the base 100, and the first guide rail 104 extends along the stacking direction of the battery pack, The first guide rail 104 is provided with a connection block 105, the connection block 105 is provided with a second guide rail 106, the second guide rail 106 extends along the direction close to the battery pack, the bottom plate 102 is arranged on the second guide rail 106, the bottom plate 102 can drive the base plate 103 Move along the second guide rail 106, and the connecting block 105 can drive the bottom plate 102 to move along the first guide rail 104, that is, the base plate 103 is movably arranged along the stacking direction of the battery pack, and the base plate 103 is movable along the direction approaching or away from the battery pack ground setting.

In one embodiment, there can be two substrates 103, and the two substrates 103 are respectively located on opposite sides of the battery pack, and alignment mechanisms 130 are provided on the two substrates 103, and the alignment mechanisms 130 on both sides of the battery pack can perform simultaneous Alignment operation, so as to realize the reliable alignment of each battery 1. In some embodiments, only one alignment mechanism 130 can be used to align the battery 1 .

In one embodiment, the stacking device further includes a welding pressing mechanism, which is arranged on the base 100, and the welding pressing mechanism is used to press the first bus bar 2 to the second bus bar 3, so as to implement alignment through the welding mechanism. Welding of the first bus bar 2 and the second bus bar 3 . And/or, the welding pressing mechanism is used to press the signal collecting end 5 of the circuit board 4 to the first bus bar 2 , so as to realize the welding of the signal collecting end 5 and the first bus bar 2 through the welding mechanism. Press the first bus bar 2 to the second bus bar 3 , so that the first bus bar 2 and the second bus bar 3 fit together.

It should be noted that when the batteries 1 are stacked, the batteries 1 are provided with busbars, and when the alignment mechanism 130 is used to fit the sides of each battery 1, the alignment mechanism 130 avoids the busbars located on the sides of the batteries 1, that is, the alignment mechanism 130 and the sides of the batteries 1 The bus bars on the side of the battery 1 are oppositely arranged. After the pressing of the battery pack is completed, the first bus bar 2 of two adjacent batteries 1 can be pressed to the second bus bar 3 by a welding pressing mechanism, so as to perform subsequent welding. After the welding of the first bus bar 2 and the second bus bar 3 is completed, the signal acquisition end 5 of the circuit board 4 can be pressed to the first bus bar 2 by the welding pressing mechanism, so as to achieve the signal acquisition end by the welding mechanism. 5 and the welding of the first bus bar 2.

In one embodiment, please refer to FIG. 8 and FIG. 9, the welding pressing mechanism includes: a first welding pressing mechanism 140, the first welding pressing mechanism 140 is used to press the first bus bar 2 to the second bus bar 3 , the first welding pressing mechanism 140 includes: a first connecting piece 141; a first pressing block 142, the first pressing piece 142 is arranged on the first connecting piece 141, and the first pressing piece 142 is used for pressing on the first bus bar 2; wherein, the first pressure block 142 is provided with a first avoidance space 1421 exposing the first bus bar 2 for the welding mechanism to weld the first bus bar 2 and the second bus bar 3 .

It should be noted that the first bus bar 2 and the second bus bar 3 belong to two batteries respectively, and the first bus bar 2 is pressed on the second bus bar 3 , and the first pressing block 142 presses the first bus bar 2 to the second bus bar 3, so that a good welding effect can be ensured when the welding mechanism welds the first bus bar 2 and the second bus bar 3.

The first bus bar 2 and the second bus bar 3 are located on the side of the battery pack, that is, the first pressing block 142 realizes the compression of the first bus bar 2 and the second bus bar 3 at the side, so as to facilitate the first bus bar 2 and the welding of the second busbar 3.

In one embodiment, as shown in FIG. 8, the first connecting part 141 includes: a first connecting part 1411 and a second connecting part 1412, the second connecting part 1412 is connected with the first connecting part 1411, and the second connecting part There is an included angle between 1412 and the first connecting portion 1411 , so that the second connecting portion 1412 is disposed opposite to the side of the battery pack; wherein, the first pressing block 142 is disposed on the second connecting portion 1412 . The first connecting portion 1411 and the second connecting portion 1412 are substantially vertical. The first connecting portion 1411 is disposed on the base plate 103 of the first welding pressing mechanism 140 .

In one embodiment, the first avoidance space 1421 is a gap, so that the two opposite first pressing parts 1422 forming the first avoidance space 1421 are evenly pressed on the same first bus bar 2, so as to ensure sufficient pressure. On the basis of the tightening force, it can be ensured that the welding mechanism welds the first bus bar 2 and the second bus bar 3 through the first avoidance space 1421 on the first pressing block 142 .

In one embodiment, the first avoidance space 1421 may be a through hole, that is, the first avoidance space 1421 may be located in the middle of the first pressure block 142 .

In one embodiment, there are at least two first avoidance spaces 1421, so that the first pressure block 142 is pressed on at least two first bus bars 2, so that at least Compression of the two first busbars 2 .

In one embodiment, the first pressing block 142 has a centrally symmetrical structure, which not only ensures the strength of the first pressing block 142 , but also ensures that the first pressing block 142 can reliably compress the first bus bar 2 .

In one embodiment, as shown in FIG. 9 , two first avoidance spaces 1421 are provided on the first pressing block 142 , and the first avoiding spaces 1421 are notches, so that four first avoidance spaces 1421 are formed on the first pressing block 142 . The pressing part 1422 , and the two pairs of first pressing parts 1422 respectively press the two first bus bars 2 .

In one embodiment, the first pressing block 142 is detachably disposed on the first connecting member 141 .

In some embodiments, the first pressing block 142 and the first connecting piece 141 can be non-detachably connected, the first pressing piece 142 and the first connecting piece 141 can be integrally formed, or the first pressing piece 142 can be connected with the first Piece 141 is welded.

In one embodiment, the first pressing block 142 is movably arranged relative to the first connecting member 141, so that the position can be adjusted during the process of pressing the first pressing block 142 against the first busbar 2, ensuring that the first busbar 2 and the second bus bar 3 are reliably bonded.

It should be noted that due to the structural limitations of the first bus bar 2 and the second bus bar 3, there may be a positional deviation during the process of pressing the first pressing block 142 on the first bus bar 2, thus causing the first bus bar 2 failed to fit reliably with the second bus bar 3 . However, in this embodiment, by making the first pressing block 142 movably arranged relative to the first connecting member 141, the position of the first pressing block 142 can be adjusted during the process of being pressed on the first bus bar 2, so Ensure reliable fit between the first bus bar 2 and the second bus bar 3 to ensure subsequent welding quality.

In one embodiment, as shown in FIG. 8 and FIG. 9 , the first welding pressing mechanism 140 further includes: a first fastener 143, and the first pressing block 142 is arranged on the first connecting piece through the first fastener 143. 141 ; the first elastic member 144 , the first elastic member 144 is sheathed on the first fastener 143 . The first fastener 143 is fixed on the first connecting piece 141, and the first elastic member 144 is pressed between the first pressure block 142 and the first fastener 143, so when the first pressure piece 142 is opposite to the first When the connecting part 141 moves, the first elastic part 144 can be compressed, and the first elastic part 144 can not only realize the buffering effect, but also prevent the first pressure block 142 from being too large in activity.

In one embodiment, the first pressing block 142 can be connected to the first connecting member 141 through at least two first fastening members 143 and corresponding first elastic members 144 .

In one embodiment, the first fastener 143 may be a bolt, the first fastener 143 is fixedly connected to the first connecting member 141, and the first pressure block 142 is movably arranged relative to the first fastener 143, The first elastic member 144 may be a spring, or may be a rubber structure or the like.

In one embodiment, the base plate 103 of the first welding pressing mechanism 140 is movably arranged relative to the base 100, so that the base plate 103 can drive the first welding pressing mechanism 140 to press the first busbar 2 on the second busbar. Row 3.

In one embodiment, the base plate 103 of the first welding pressing mechanism 140 is movably arranged along the stacking direction of the battery pack, so that a clearance space can be formed between the first welding pressing mechanism 140 and the battery pack for placing other structures.

In one embodiment, the base plate 103 of the first welding pressing mechanism 140 is movably arranged in a direction close to or away from the battery pack, so that the first welding pressing mechanism 140 presses the first busbar 2 against the second busbar. Row 3.

In one embodiment, as shown in FIG. 8 , the base 100 is provided with a base plate 102, the base plate 103 of the first welding pressing mechanism 140 is arranged on the base plate 102, the base 100 is provided with a first guide rail 104, and the first guide rail 104 is arranged along the The stacking direction of the battery pack extends, the first guide rail 104 is provided with a connecting block 105, the connecting block 105 is provided with a second guide rail 106, the second guide rail 106 extends in a direction close to the battery pack, and the bottom plate 102 is arranged on the second guide rail 106 , the base plate 102 can drive the base plate 103 to move along the second guide rail 106, and the connecting block 105 can drive the base plate 102 to move along the first guide rail 104, that is, the base plate 103 can be movably arranged along the stacking direction of the battery pack, and the base plate 103 can be moved along the approaching or The direction away from the battery pack is movably set.

In one embodiment, there are a plurality of first welding pressing mechanisms 140, and the plurality of first welding pressing mechanisms 140 are all arranged on the substrate 103, so that the pressing of a plurality of first busbars 2 can be realized at one time, thereby The welding efficiency of the first bus bar 2 and the second bus bar 3 is improved.

In one embodiment, there may be two substrates 103 of the first welding pressing mechanism 140, the two substrates 103 are respectively located on opposite sides of the battery pack, and the first welding pressing mechanism 140 is arranged on the two substrates 103 , the first welding and pressing mechanisms 140 on both sides of the battery pack can be pressed simultaneously, so as to realize the fixing of the battery pack, and there is no need to set an additional fixing structure to fix the battery pack as a whole.

In one embodiment, as shown in FIG. 10 and FIG. 11 , the welding pressing mechanism includes a second welding pressing mechanism 150, and the second welding pressing mechanism 150 is used to press the signal collecting end 5 of the circuit board 4 to the first welding pressing mechanism 150. On a bus bar 2, the second welding pressing mechanism 150 includes: a second connecting piece 151; a second pressing piece 152, the second pressing piece 152 is arranged on the second connecting piece 151; a third pressing piece 153, the third pressing piece The block 153 is arranged on the second connecting piece 151, and the second pressing block 152 and the third pressing block 153 are used to be pressed on the same signal collecting end 5; wherein, the second pressing block 152 and the third pressing block 153 expose the signal The part of the collection terminal 5 is used for the welding mechanism to weld the signal collection terminal 5 and the first bus bar 2 .

It should be noted that the second pressing block 152 and the third pressing block 153 are pressed on the same signal collecting terminal 5, so that the reliable contact between the signal collecting terminal 5 and the first bus bar 2 can be made, and then welded by the welding mechanism , can make the signal acquisition end 5 and the first bus bar 2 have a reliable welding connection surface, for example, when the signal acquisition end 5 and the first bus bar 2 are laser welded, it is necessary to ensure that the signal acquisition end 5 and the first bus bar Row 2 fits securely.

The signal collection end 5 and the first bus bar 2 are located on the side of the battery pack, that is, the second pressing block 152 and the third pressing block 153 realize the compression of the signal collecting end 5 and the first bus bar 2 at the side, so as to facilitate Welding of the signal collecting end 5 and the first bus bar 2 .

In one embodiment, as shown in FIG. 11 , the second connecting part 151 includes: a third connecting part 1511 and a fourth connecting part 1512, the fourth connecting part 1512 is connected to the third connecting part 1511, and the fourth connecting part There is an included angle between 1512 and the third connecting portion 1511, so that the fourth connecting portion 1512 is disposed opposite to the side of the battery pack; wherein, the second pressing block 152 and the third pressing block 153 are arranged on the fourth connecting portion 1512 . The third connecting portion 1511 and the fourth connecting portion 1512 are substantially vertical. The third connection portion 1511 is disposed on the substrate 103 .

In one embodiment, the third connection part 1511 may be a connection block, there may be at least two fourth connection parts 1512 , and the second pressing block 152 is disposed on at least two fourth connection parts 1512 . The third pressing block 153 is disposed on at least two fourth connecting portions 1512 . The second pressing block 152 is disposed on at least two fourth connecting parts 1512 through the second fastener 154 and the second elastic member 155 . The third pressing block 153 is disposed on at least two fourth connecting parts 1512 through the second fastener 154 and the second elastic member 155 .

In one embodiment, the circuit board 4 may be a flexible printed circuit board, namely FPC (Flexible Printed Circuit), and the circuit board 4 may include functions such as voltage collection and temperature collection. The signal collection terminal 5 can use a nickel sheet.

In one embodiment, as shown in FIG. 10 and FIG. 11 , the second pressing block 152 and the third pressing block 153 are spaced apart so as to be respectively pressed on opposite ends of the signal collection end 5; wherein, the second pressing block 152 A second avoidance space 157 for exposing the signal collection terminal 5 is formed between the third pressure block 153 , so that the welding mechanism can weld the signal collection terminal 5 and the first bus bar 2 through the second avoidance space 157 .

The second briquetting block 152 and the third briquetting block 153 are pressed on the signal collecting end 5 at intervals, so that the reliable contact between the signal collecting end 5 and the first bus bar 2 can be ensured to ensure that subsequent methods such as laser welding are adopted. When the signal collecting end 5 and the first bus bar 2 are welded, reliable welding between the signal collecting end 5 and the first bus bar 2 can be ensured.

In one embodiment, the second pressing block 152 is detachably disposed on the second connecting member 151 . The third pressing block 153 is detachably disposed on the second connecting member 151 .

In some embodiments, the second pressing block 152 can be non-detachably connected to the second connecting member 151 , and the third pressing block 153 can be non-detachably connecting to the second connecting member 151 . The second pressing block 152 and the second connecting piece 151 can be integrally formed, or the second pressing piece 152 and the second connecting piece 151 can be welded. The third pressing block 153 and the second connecting piece 151 can be integrally formed, or the third pressing piece 153 and the second connecting piece 151 can be welded.

In one embodiment, as shown in FIG. 11 , the second pressing block 152 includes a first connecting body 1521 , a second pressing portion 1522 and a third pressing portion 1523 , and the first connecting body 1521 is disposed on the second connecting piece 151 Above, the second pressing part 1522 and the third pressing part 1523 are arranged on the first connecting body 1521 , and the second pressing part 1522 and the third pressing part 1523 are used to be pressed on the signal collecting end 5 .

In some embodiments, the second pressing part 1522 and the third pressing part 1523 can be pressed on the same signal collecting end 5 to ensure reliable pressing on the signal collecting end 5 .

In some embodiments, the second pressing part 1522 and the third pressing part 1523 are arranged at intervals, and are respectively used for pressing the two signal collection terminals 5, so that the two Compression of the signal acquisition end 5.

In one embodiment, as shown in FIG. 11 , the third pressing block 153 includes a second connecting body 1531 , a fourth pressing portion 1532 and a fifth pressing portion 1533 , and the second connecting body 1531 is disposed on the second connecting piece 151 Above, the fourth pressing part 1532 and the fifth pressing part 1533 are arranged on the second connecting body 1531 , and the fourth pressing part 1532 and the fifth pressing part 1533 are used to be pressed on the signal collecting end 5 .

In some embodiments, the fourth pressing part 1532 and the fifth pressing part 1533 can be pressed on the same signal collecting end 5 , so as to ensure reliable pressing on the signal collecting end 5 .

In some embodiments, the fourth pressing part 1532 and the fifth pressing part 1533 are arranged at intervals, and are respectively used for pressing two signal collection ends 5, so that two Compression of the signal collection end 5.

In one embodiment, the second pressing part 1522 of the second pressing block 152 and the fourth pressing part 1532 of the third pressing block 153 are pressed on one signal collecting end 5 at the same time, and the second pressing part 1522 and the fourth pressing part 1532 A second escape space 157 is formed between the four pressing portions 1532 . The third pressing part 1523 of the second pressing block 152 and the fifth pressing part 1533 of the third pressing block 153 are pressed on the other signal collecting end 5 at the same time, and the second pressing part 1522 and the fourth pressing part 1532 A second avoidance space 157 is formed between them.

In some embodiments, it is not excluded that the second pressing block 152 and the third pressing block 153 also include other pressing parts, so as to press other signal collection terminals 5 .

In one embodiment, as shown in FIG. 10 , a notch 156 is provided at one end of the second pressing part 1522 and the third pressing part 1523 toward the signal collecting end 5, thereby reducing The contact area between the tightening part 1523 and the signal collection terminal 5 can avoid over-pressing the signal collection terminal 5 on the basis of ensuring the structural strength of the second pressing block 152 .

In one embodiment, as shown in FIG. 10 , a notch 156 is provided at one end of the fourth pressing part 1532 and the fifth pressing part 1533 facing the signal collecting end 5, thereby reducing The contact area between the tightening part 1533 and the signal collection terminal 5 can avoid excessively pressing the signal collection terminal 5 on the basis of ensuring the structural strength of the third pressing block 153 .

In one embodiment, the notch 156 of the second pressing part 1522 is set away from the notch 156 of the fourth pressing part 1532, the notch 156 of the third pressing part 1523 is opposite to the notch 156 of the fifth pressing part 1533 Deviated settings.

In one embodiment, the second pressing block 152 is movably arranged relative to the second connecting piece 151, and/or, the third pressing piece 153 is movably arranged relative to the second connecting piece 151, so that 152 and the third pressing block 153 can adjust the position during the process of pressing the signal collecting end 5 to ensure reliable bonding between the signal collecting end 5 and the first bus bar 2 .

It should be noted that, since the signal collecting end 5 is relatively thin, there may be a position deviation during the process of pressing the second pressing block 152 and the third pressing block 153 on the signal collecting end 5, thus causing the signal collecting end 5 to fail to It is reliably attached to the first bus bar 2 . However, in this embodiment, by making the second pressing block 152 movably arranged relative to the second connecting piece 151, the third pressing piece 153 is movably arranged relative to the second connecting piece 151, so that the second pressing piece 152 During the process of pressing the third pressing block 153 on the signal collecting end 5, the position can be adjusted, so as to ensure the reliable fit between the signal collecting end 5 and the first bus bar 2, so as to ensure the subsequent welding quality.

In one embodiment, as shown in FIG. 10 , the second welding pressing mechanism 150 further includes: at least two second fasteners 154, and the second pressing block 152 is arranged on the second On the connecting piece 151, the third pressing block 153 is arranged on the second connecting piece 151 through at least one second fastener 154; at least two second elastic pieces 155, and the second elastic piece 155 is sleeved on the corresponding second fastening piece. Firmware 154 on. The second fastener 154 is fixed on the second connecting piece 151, and the second elastic member 155 is pressed between the second pressure block 152 and the second fastener 154, so that when the second pressure piece 152 is opposite to the second When the connecting part 151 moves, it can compress the second elastic part 155, and the second elastic part 155 can not only realize the buffering effect, but also prevent the second pressure block 152 from being too large in activity. Correspondingly, the second elastic member 155 is pressed between the third pressing block 153 and the second fastening member 154, so the second elastic member 155 can be compressed when the third pressing block 153 moves relative to the second connecting member 151, The second elastic member 155 can not only realize the buffering effect, but also prevent the third pressure block 153 from being too large in activity.

In one embodiment, the second pressing block 152 can be connected to the second connecting member 151 through at least two second fastening members 154 and corresponding second elastic members 155 . The third pressing block 153 can be connected to the second connecting member 151 through at least two second fastening members 154 and corresponding second elastic members 155 .

In one embodiment, the second fastener 154 can be a bolt, and the second fastener 154 is fixedly connected with the second connecting piece 151, while the second pressing piece 152 and the third pressing piece 153 are opposite to the second fastener. 154 can be set movably, and the second elastic member 155 can be a spring, or can be a rubber structure or the like.

In one embodiment, the second connecting member 151 is disposed on the base plate 103 of the second welding pressing mechanism 150; wherein, the base plate 103 is movably arranged relative to the base 100, so that the base plate 103 can drive the second welding pressing mechanism 150 presses the signal collecting end 5 onto the first bus bar 2 .

In one embodiment, the base plate 103 of the second welding pressing mechanism 150 is movably arranged along the stacking direction of the battery pack, so that a clearance space can be formed between the second welding pressing mechanism 150 and the battery pack for placing other structures.

In one embodiment, the base plate 103 of the second welding pressing mechanism 150 is movably arranged in a direction close to or away from the battery pack, so that the second welding pressing mechanism 150 presses the signal collecting end 5 to the first bus bar 2 superior.

In one embodiment, as shown in FIG. 10 , the base 100 is provided with a base plate 102, the base plate 103 of the second welding pressing mechanism 150 is arranged on the base plate 102, the base 100 is provided with a first guide rail 104, and the first guide rail 104 is arranged along the The stacking direction of the battery pack extends, the first guide rail 104 is provided with a connecting block 105, the connecting block 105 is provided with a second guide rail 106, the second guide rail 106 extends in a direction close to the battery pack, and the bottom plate 102 is arranged on the second guide rail 106 , the base plate 102 can drive the base plate 103 to move along the second guide rail 106, and the connecting block 105 can drive the base plate 102 to move along the first guide rail 104, that is, the base plate 103 can be movably arranged along the stacking direction of the battery pack, and the base plate 103 can be moved along the approaching or The direction away from the battery pack is movably set. In some embodiments, the stacking device may further include a positioning clamp 108, which is used to fix the base plate 102 on the base 100, and when the base plate 102 needs to move along the second guide rail 106, the positioning clamp 108 makes The bottom plate 102 is not fixedly arranged relative to the base 100 . The positioning clamp 108 may be a fixed structure in related technologies such as a telescopic structure and a pressing block structure, which is not limited here.

In one embodiment, there are a plurality of second welding pressing mechanisms 150, and the plurality of second welding pressing mechanisms 150 are all arranged on the substrate 103, so that the pressing of multiple signal acquisition terminals 5 can be realized at one time, thereby improving The welding efficiency of the signal collecting end 5 and the first bus bar 2 .

In one embodiment, there may be two substrates 103 of the second welding pressing mechanism 150, the two substrates 103 are respectively located on opposite sides of the battery pack, and the second welding pressing mechanism 150 is arranged on the two substrates 103 , the second welding and pressing mechanism 150 on both sides of the battery pack can be pressed simultaneously, so as to realize the fixing of the battery pack, and there is no need to set an additional fixing structure to fix the battery pack as a whole.

In some embodiments, the substrate 103 of the first welding pressing mechanism 140 and the substrate 103 of the second welding pressing mechanism 150 may be the same substrate, that is, after the first welding pressing mechanism 140 finishes pressing, the second welding pressing mechanism 150 may be A welding pressing mechanism 140 is removed from the substrate, and a second welding pressing mechanism 150 is installed on the substrate 103 . In some embodiments, the substrate 103 of the alignment mechanism 130 may be the same substrate as the substrate 103 of the first welding pressing mechanism 140 and the substrate 103 of the second welding pressing mechanism 150, and the alignment mechanism 130 may be the same as the first welding pressing mechanism 103. The welding pressing mechanism 140 or the second welding pressing mechanism 150 is installed on one substrate at the same time. As shown in FIG. 2 , the second welding pressing mechanism 150 and the alignment mechanism 130 can share a substrate 103 .

In some embodiments, the substrate 103 of the first welding pressing mechanism 140 and the substrate 103 of the second welding pressing mechanism 150 can be two substrates, the substrate 103 of the first welding pressing mechanism 140 and the second welding pressing mechanism The base plate 103 of 150 is detachably set on the base plate 102, so that after the first welding pressing mechanism 140 finishes pressing, the base plate 103 of the first welding pressing mechanism 140 can be removed from the base plate 102, and the second welding The base plate 103 of the pressing mechanism 150 is installed on the bottom plate 102 . The substrate 103 of the alignment mechanism 130 may not be the same substrate as the substrate 103 of the above-mentioned first welding and pressing mechanism 140 and the substrate 103 of the second welding and pressing mechanism 150, and the substrate 103 of the alignment mechanism 130 can also be directly removed from the bottom plate 102 .

It should be noted that the alignment mechanism 130 , the first welding pressing mechanism 140 and the second welding pressing mechanism 150 are optionally installed on the base 100 , that is, the disassembly and installation of each mechanism can be realized according to a specific stacking process.

In some embodiments, the substrate 103 may also be provided with a grasping part 107, which is used to connect with an external mechanism, so that the substrate 103 can be easily removed from the base 100. The grasping part 107 can be at least two.

In one embodiment, as shown in FIG. 12 , the stacking device further includes: a stopper 160, the stopper 160 straddles a plurality of batteries 1 of the battery pack, and the two ends of the stopper 160 are respectively used to connect the batteries 1 of the battery pack. The two opposite connecting parts 7 of the casing 6 are used to prevent the cable tie 8 from deforming the battery pack. By placing the limiting member 160 across a plurality of batteries 1 of the battery pack, and connecting the two ends of the limiting member 160 to the two opposite connecting parts 7 of the casing 6, when the battery pack is fastened with the cable tie 8, Due to the limiting effect of the limiting member 160 , it is possible to prevent the deformation of the battery pack caused by the excessive tightening force of the cable tie 8 of the casing 6 .

It should be noted that, after the multiple batteries 1 are stacked, the multiple batteries 1 are located in the case 6 at this time, and then the case 6 is wound and fastened by the cable tie 8 , as shown in FIG. 13 . In order to ensure the fit between multiple batteries 1 , the tightening force of the cable tie 8 will be relatively large. In this embodiment, the integral stopper 160 is connected to the two opposite connecting parts 7 of the housing 6, so that the stopper 160 forms a restrictive structure, that is, it can form a reverse force with the tightening force. , even if the tightening force exerted in the process of tightening the strap 8 is relatively large, the battery pack will not be deformed.

In one embodiment, the casing 6 includes two opposite end plates, a plurality of batteries 1 are clamped between the two opposite end plates, and the two ends of the limiting member 160 are respectively connected to the two opposite end plates, That is, each end plate is respectively provided with a connecting portion 7 . In some embodiments, the casing 6 may further include two side cover plates, and the two side cover plates are arranged opposite to each other, so as to realize reliable surrounding of multiple batteries 1 with the two end plates, And the cable ties 8 are wound around the two end plates and the two side cover plates, thereby fastening the plurality of batteries 1, as shown in FIG. 13 .

It should be noted that the limiting member 160 spans multiple batteries 1 of the battery pack, that is, the limiting member 160 needs to connect the two opposite end plates, so as to clamp the plurality of batteries between the two opposite end plates, The limiting member 160 may be connected to the tops of the two end plates, as shown in FIG. 12 . In some embodiments, it is not excluded that the limiting member 160 is connected to the side of the end plate. At this time, part of the limiting member 160 may be located above the battery pack, or the entire limiting member 160 may be located on the side of the battery pack. square.

In one embodiment, the limiting member 160 can be a limiting rod, the limiting rod spans a plurality of batteries 1 of the battery pack, and the limiting rod extends along the stacking direction of the battery pack, that is, the length direction of the limiting rod can be the length of the battery pack. The stacking direction of the group.

It should be noted that the limit rod may be a rod-shaped structure, and the rod-shaped structure may be a hollow rod or a solid rod, which is not limited here. In some embodiments, the limiting rod may be roughly a plate-shaped structure, where the limiting of the housing 6 is realized. In one embodiment, the limit rod is integrally formed, which not only has a simple forming process, but also ensures structural strength.

In one embodiment, the limiting member 160 and the connecting portion 7 can be connected by fasteners, for example, holes are provided on the limiting member 160 and the housing 6, that is, the connecting portion 7 can have holes, and the fasteners can be passed through It is arranged in the holes of the limiting member 160 and the housing 6 , so as to realize the connection between the limiting member 160 and the connecting portion 7 . The fasteners can be threaded connections such as bolts and screws, or the fasteners can have structures such as pins and keys, as long as the connection between the limiting member 160 and the connecting portion 7 can be realized.

In one embodiment, the limiting member 160 is used to engage with the connecting portion 7 , which is not only convenient for connection, but also facilitates subsequent disassembly of the limiting member 160 .

In one embodiment, the two ends of the limiting member 160 are respectively provided with fitting parts 161, and the two fitting parts 161 are respectively used to connect the two connecting parts 7, so that the limiting member 160 is connected with the Part 7 is directly connected instead of external components, which can simplify the structure. The fitting part 161 and the connecting part 7 can be a fitting structure of a protrusion and a groove, or the fitting part 161 and the connecting part 7 can be a fitting structure of a protrusion and a through hole, or the fitting part 161 and the connecting part 7 It may be a buckle-to-snap fit, or the fitting part 161 and the connecting part 7 may be surface-to-surface bonding.

In one embodiment, the fitting part 161 and the connecting part 7 are a matching structure of a protrusion and the installation space, that is, one of the fitting part 161 and the connecting part 7 is a protrusion, and the other is an installation space, and the protrusion and the installation space The installation space is coordinated, and the structure can be simplified on the basis of ensuring the stability of the connection.

In some embodiments, the protrusion can be a columnar structure, and the installation space can be a hole-like structure, and the columnar structure can be inserted into the hole-like structure to realize connection. The columnar structure can be a circular column, and the hole-like structure can be a circular hole, or the columnar structure can be a rectangular column, and the hole-like structure can be a rectangular hole, which is not limited here.

In one embodiment, the protrusion is a limiting shaft, the installation space is a mounting hole, and the limiting shaft is inserted in the mounting hole, so as to realize the connection between the limiting member 160 and the housing 6, which is not only simple in structure, but also convenient The connection and disassembly of the limiting member 160. The limiting shaft can be a cylindrical structure or a polygonal structure, for example, a rectangular columnar structure. The limit shaft can be a columnar structure with the same cross-sectional area at each position, or a columnar structure with multiple different sizes.

In some embodiments, the fitting part 161 can be a limiting shaft, and the connecting part 7 is a mounting hole, and the fitting part 161 of the limiting part 160 can be directly inserted into the connecting part 7, so as to realize reliable installation.

In some embodiments, the fitting portion 161 may be a mounting hole, and the connecting portion 7 is a limiting shaft, and the fitting portion 161 of the limiting member 160 is used to insert the connecting portion 7, so as to realize reliable installation. The limiting shaft on the housing 6 can be an external component, that is, it can be removed after use. In some embodiments, it is not excluded that the limiting shaft on the housing 6 can be a part of the housing 6 .

In one embodiment, as shown in FIG. 14, at least one of the two limiting shafts includes a first shaft section 1611 and a second shaft section 1612 connected, and the cross-sectional area of the first shaft section 1611 is larger than that of the second shaft. The cross-sectional area of the segment 1612, the second shaft segment 1612 is used to be inserted in the mounting hole.

When the adapter part 161 is a limit shaft, the first shaft segment 1611 is used to connect to the limit member 160. At this time, in order to ensure the structural stability of the limit member 160 and the adapter part 161, it is necessary to ensure that the first shaft segment 1611 has Sufficient strength to avoid damage, after all, the adapter part 161 is a part of the limiter 160, and the second shaft section 1612 is used to realize the detachable connection with the housing 6, and the tightening force exerted by the cable tie 8 is applied to the The moment on the first shaft section 1611 will be larger, while the second shaft section 1612 is relatively smaller, so the cross-sectional area of the first shaft section 1611 is larger than that of the second shaft section 1612, and the strength of the first shaft section 1611 It should be greater than the strength of the second shaft section 1612 .

When the connecting part 7 is a limiting shaft, the first shaft section 1611 is used to connect to the housing 6. At this time, in order to ensure the structural stability of the limiting part 160 and the connecting part 7, it is necessary to ensure that the first shaft section 1611 has sufficient strength Avoid damage.

In one embodiment, the first shaft section 1611 is a cylindrical structure, and the second shaft section 1612 is a cylindrical structure.

In one embodiment, as shown in FIG. 14 , the adapter portion 161 is a limit shaft, and the limit member 160 is provided with at least one waist-shaped hole 162, and the limit shaft is installed in the waist-shaped hole 162; wherein, the limit shaft is opposite to The position of the waist hole 162 is adjustable, so that the accuracy requirement of the structure can be reduced, and the assembly efficiency of the limiting member 160 and the battery module can be improved.

It should be noted that the length direction of the waist-shaped hole 162 may be the length direction of the limiting member 160 , that is, the length direction of the waist-shaped hole 162 may be parallel to the stacking direction of the battery pack. In some embodiments, the length direction of the waist hole 162 may be perpendicular to the stacking direction of the battery pack. The columnar structure can be moved in a direction parallel to the stacking direction of the battery pack, or in a direction perpendicular to the stacking direction of the battery pack, so as to effectively adjust the position of the fitting part 161 and facilitate the connection between the fitting part 161 and the connecting part. 7 connections.

In one embodiment, as shown in Figure 14, two holes are respectively provided at both ends of the limiting member 160, and one is a waist-shaped hole 162, and the other can be a circular hole 163, and the two limiting axes are respectively set In the circular hole 163 and the waist-shaped hole 162, when the two limit shafts are connected to the two installation holes, the installation position of the limit shaft and the waist-shaped hole 162 can be adjusted according to the distance between the two installation holes, so as to This conveniently realizes the connection between the two position-limiting shafts on the position-limiting member 160 and the two installation holes on the housing 6, and the movement of the position-limiting shafts relative to the waist-shaped hole 162 can leave space for the position-limiting member 160 and the housing 6. For a certain amount of activity, in this embodiment, the length direction of the waist-shaped hole 162 may be parallel to the stacking direction of the battery pack. In some embodiments, after the limiting shaft is moved to a position, the limiting shaft may also be locked on the limiting member 160 by bolts or other structures.

In one embodiment, the length of the limiting member 160 is adjustable, so that the accuracy requirements of the structure can be reduced, the assembly efficiency of the limiting member 160 and the battery module can be improved, and the use range of the limiting member 160 can also be increased.

It should be noted that when the limiter 160 is used for battery packs of the same specification, that is, the battery packs contain the same number of batteries, but in some cases, it is not ruled out that there will be a gap between the two end plates of each battery pack. To solve the problem that the distance between them changes, by setting the length of the limiting member 160 in an adjustable manner, it can be ensured that the same limiting member 160 can adapt to battery packs with varying lengths. Or, when the battery pack includes different numbers of batteries, it can also be adapted by adjusting the length of the limiting member 160 .

In one embodiment, the stopper 160 may include two plug-in sections that are inserted into each other, and the two plug-in sections are movably arranged with each other, so as to realize the length adjustment of the stopper 160, which can be adjusted after the length requirement is met. Locking with fasteners. In some embodiments, the limiting member 160 may include a power source, and the power source includes a telescopic structure, and the power source may be an oil cylinder, an air cylinder, or an electric cylinder, so as to push the telescopic rod to extend and retract, so as to realize The length of the limiting member 160 is adjusted.

In one embodiment, as shown in FIG. 12 and FIG. 14 , a handle 164 may be provided on the limiting member 160 , and the handle 164 is convenient for the operator to grasp the limiting member 160 . There can be at least two handles 164 .

In one embodiment, at least two fitting parts 161 can be provided at both ends of the limiting member 160, and at least two connecting parts 7 can be provided on both end plates of the housing 6, so as to realize limiting The reliable connection between the position piece 160 and the housing 6.

In an embodiment, the stacking device may include at least two limiting members 160 , so that the battery pack may be reliably protected by the at least two limiting members 160 .

In one embodiment, the battery pack is used to be placed on the base 100, and the housing 6 is connected to the base 100, that is, in the process of fastening the cable tie 8, the battery pack is not only limited by the limiter 160 , and in conjunction with the connection between the housing 6 and the base 100, deformation of the battery module can be reliably avoided.

It should be noted that the housing 6 is connected to the base 100 , and pins may be provided on the base 100 , and the end plates of the housing 6 may be connected to the pins. The base 100 may be provided with other structures to support the end plates and connect with the end plates, which is not limited here and can be selected according to actual needs.

It should be noted that when using a cable tie machine to tie the casing 6 8, it is necessary to make the base plate 103 of the second welding pressing mechanism 150 move along the stacking direction of the battery pack, so that the side of the battery pack Form an avoidance space for placing the cable tie machine.

An embodiment of the present invention also provides an assembly line for battery packs, including the above-mentioned stacking equipment.

An assembly line for a battery pack according to an embodiment of the present invention includes stacking equipment. The stacking device includes a base 100, a positioning mechanism, and an alignment mechanism 130. A plurality of batteries 1 are stacked on the base 100, and the alignment of each battery 1 is realized through the alignment mechanism 130. Subsequently, the positioning mechanism is used to realize the alignment of each battery 1 to be aligned. Clamping to achieve stacking of battery packs.

In one embodiment, the assembly line further includes: a welding mechanism; wherein, the welding mechanism is used for welding the busbar and the pole of the battery 1; or, the welding mechanism is used for welding the first busbar 2 and the second busbar 3; or , the welding mechanism is used for welding the signal collecting end 5 and the first bus bar 2 . The welding mechanism cooperates with the above-mentioned stacking equipment to realize the welding of the first bus bar 2 and the second bus bar 3 , and the welding of the signal collection terminal 5 and the first bus bar 2 . The welding of the busbar and the pole can be performed before stacking the battery 1 , and the stacking of the battery 1 can be performed after the welding of the busbar and the pole is completed.

In one embodiment, the assembly line further includes: a transfer mechanism, which is used to transfer the battery pack fastened by the cable tie 8 to a preset location for subsequent processing. The transfer mechanism may be an aerial transfer mechanism such as a crane. Alternatively, the transfer mechanism may be a conveyor line. The transfer mechanism can also be a robot.

An embodiment of the present invention also provides a battery pack assembly method, please refer to Figure 15, the battery pack assembly method includes:

S101, providing a battery 1 with a bus bar;

S103, stack a plurality of batteries 1, and arrange the first bus bar 2 of one adjacent battery 1 and the second bus bar 3 of another battery 1 in close contact;

S105, aligning each battery 1;

S107 , clamping the aligned multiple batteries 1 .

The method for assembling a battery pack according to an embodiment of the present invention stacks each battery 1 with a bus bar, and makes the first bus bar 2 and the second bus bar 3 of two adjacent batteries 1 stick to each other, and then multiple The batteries 1 are aligned and the clamping of multiple batteries 1 is completed, so as to realize the stacking of individual batteries 1 .

It should be noted that before stacking the batteries 1, the batteries 1 have been welded with busbars, so when stacking multiple batteries 1, it is necessary to make the busbars of each battery 1 be located at the side of the battery 1, and in order to To ensure the connection between the bus bars, it is necessary to arrange the first bus bar 2 and the second bus bar 3 of two adjacent batteries 1 correspondingly, and the first bus bar 2 and the second bus bar 3 may be overlapped. In some embodiments, the direct connection between the first bus bar 2 and the second bus bar 3 is not excluded. However, it is necessary to avoid interference with the busbars during the alignment of the battery 1 and the clamping of the battery 1 .

In one embodiment, the bus bars of the battery 1 are disposed on the stacking surface of the battery 1 , and the stacking surface of the battery 1 is a surface perpendicular to the stacking direction of the battery pack.

The first bus bar 2 of one adjacent battery 1 is attached to the second bus bar 3 of another battery 1 , and the first bus bar 2 and the second bus bar 3 are used to represent the bus bars of two different batteries 1 .

In one embodiment, the battery pack assembly method further includes: pressing the first bus bar 2 to the second bus bar 3; welding the first bus bar 2 and the second bus bar 3 to realize the first bus bar 2 and the second bus bar 3 Connection of the second busbar 3.

It should be noted that the stacked first welding pressing mechanism 140 can be used to press the first bus bar 2 to the second bus bar 3 .

In one embodiment, the battery pack assembly method further includes: pressing the signal collection terminal 5 of the circuit board 4 to the first bus bar 2; welding the signal collection terminal 5 and the first bus bar 2 to realize the signal collection terminal 5 Connection to the first busbar 2.

It should be noted that the stacked second welding pressing mechanism 150 can be used to press the signal collecting end 5 of the circuit board 4 to the first bus bar 2 .

In one embodiment, the method for assembling a battery pack further includes: binding each battery 1 with a strap 8 , so as to realize the fixing of a plurality of batteries 1 .

In one embodiment, the cable tie 8 can directly bind a plurality of batteries 1, that is, the cable tie 8 can be fixed on the casing of the battery 1, for example, the casing strength of the two outermost batteries 1 is relatively high, so it can withstand The binding force of the cable tie 8.

In one embodiment, before directly binding the batteries 1 with the strap 8, the two ends of the stopper 160 are respectively connected to the casings of the two outermost batteries 1, so as to prevent the battery pack from being damaged during the strapping process. out of shape. That is, the limiting member 160 is directly connected to the casing of the battery.

In one embodiment, the strap 8 can indirectly bind a plurality of batteries 1, and using the strap 8 to bundle each battery 1 includes: using the strap 8 to bind the housing 6 to fix each battery 1 in the housing 6, so that Prevent battery 1 from coming off.

It should be noted that before the casing 6 is fastened with the cable tie 8 , the second welding pressing mechanism 150 can be moved so that the side of the battery pack forms an escape space for placing the cable tie machine.

In one embodiment, the battery pack assembly method further includes: before binding the casing 6 with a cable tie 8, connecting the two ends of the stopper 160 to the two opposite connecting parts 7 of the casing 6, so as to avoid The battery pack is deformed during the strapping process.

It should be noted that the limiter 160 may be a limiter 160 arranged in a stack, and the limiter 160 is used to connect the two end plates of the housing 6 . The casing 6 may also include two side cover plates, and the two side cover plates are arranged opposite to each other so as to securely surround a plurality of batteries 1 with the two end plates, and the cable tie 8 is wound around the Two end plates and two side cover plates are used to fasten a plurality of cells 1 .

In one embodiment, aligning each battery 1 includes: using the alignment mechanism 130 to attach to the side of each battery 1, and making the alignment mechanism 130 avoid the bus bar located on the side of the battery 1, that is, the alignment mechanism 130 and the battery 1 The bus bars are set relative to each other.

It should be noted that the alignment of the plurality of batteries 1 can be achieved by moving the alignment mechanism 130 , or the batteries 1 can be pushed so that the plurality of batteries 1 are in contact with the alignment mechanism 130 . The alignment mechanism 130 , the first welding pressing mechanism 140 and the second welding pressing mechanism 150 may be located on the same side of the battery 1 . The alignment mechanism 130 may be an alignment mechanism 130 of a stacking device.

In one embodiment, stacking the plurality of batteries 1 includes: stacking the plurality of batteries 1 on the base 100 in sequence, and the stacking direction of the battery pack is parallel to the base 100 . A plurality of batteries 1 are stacked on the base 100 . During the specific stacking process, a mechanical arm can be used to grasp the batteries 1 , so that each battery 1 is stacked on the base 100 in sequence. The stacking of individual cells 1 on the base 100 may be a horizontal stack. Horizontal stacking can be understood as that the stacking direction of the battery pack is parallel to the base 100 , at this time, the base 100 can be parallel to the horizontal reference plane, or the base 100 can be arranged obliquely to the horizontal reference plane.

It should be noted that the first positioning mechanism 110 and the second positioning mechanism 120 of the stacking device can be used to compress multiple batteries 1 .

In one embodiment, each battery 1 is respectively placed on the positioning slider 101 of the base 100; when the first positioning mechanism 110 and the second positioning mechanism 120 are used to compress a plurality of batteries 1, the battery 1 drives the positioning slider 101 along the battery. The stacking direction of the group moves relative to the base 100 , so as to ensure the reliable bonding of each battery 1 .

It should be noted that the positioning slider 101 may be a positioning slider 101 of a stacking device.

In one embodiment, stacking the plurality of batteries 1 includes: stacking the plurality of batteries 1 on the base 100 in sequence, and the stacking direction of the battery pack is perpendicular to the base 100 . The stacking of each battery 1 on the base 100 may be vertical stacking, which can be understood as the stacking direction of the battery pack is perpendicular to the base 100 . After the stacking of the battery pack is completed, the positioning structure can be used to realize the pressing of the battery pack.

In one embodiment, the assembly method of the battery pack can be adapted to the stacked arrangement described above.

An embodiment of the present invention also provides a battery pack, including a battery pack assembled by the above battery pack assembly method.

A battery pack according to an embodiment of the present invention is assembled by using the above battery pack assembly method, and the battery pack assembly production line includes stacking equipment. The assembly method of the battery pack stacks each battery 1 with a bus bar, and makes the first bus bar 2 and the second bus bar 3 of two adjacent batteries 1 correspond to each other, and then aligns multiple batteries 1 and completes the pair-to-many Clamping of each battery 1 to realize the stacking of each battery 1.

In one embodiment, the battery pack includes a plurality of batteries 1 , which may include cells and electrolytes, the smallest unit capable of electrochemical reactions such as charging/discharging. The battery core refers to a unit formed by winding or laminating a stacked part, and the stacked part includes a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. The polarity of the first electrode and the second electrode may be interchanged.

The battery cell is a laminated battery cell, and the battery cell has a first pole piece stacked on each other, a second pole piece electrically opposite to the first pole piece, and a diaphragm set between the first pole piece and the second pole piece , so that multiple pairs of the first pole piece and the second pole piece are stacked to form a laminated battery cell.

The battery can be a winding battery, that is, the first pole piece, the second pole piece electrically opposite to the first pole piece, and the diaphragm sheet arranged between the first pole piece and the second pole piece are wound to obtain a rolled battery. Winding core.

Other embodiments of the present disclosure will readily occur to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any modification, use or adaptation of the present invention, these modifications, uses or adaptations follow the general principles of this disclosure and include common knowledge or conventional technical means in the technical field not disclosed in this disclosure . The specification and example embodiments are to be considered as exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of protection of the present disclosure is limited only by the appended claims.

Claims (28)

1. A stacking device, characterized in that it is used to stack a plurality of batteries (1) to form a battery pack, the stacking device comprising: a base (100), the base (100) is used to place the battery (1); A positioning mechanism, the positioning mechanism includes a positioning surface, and the positioning surface is used to be attached to the stacking surface of the battery (1); an alignment mechanism (130), the alignment mechanism (130) is arranged on the base (100), and is used to attach to the side of each of the batteries (1), so that each of the batteries (1) is aligned; Wherein, the positioning mechanism is used for clamping the aligned batteries (1). 2. The stacking device according to claim 1, wherein the positioning mechanism comprises: A first positioning mechanism (110), the first positioning mechanism (110) is arranged on the base (100), and the first positioning mechanism (110) includes a first positioning surface (111); The second positioning mechanism (120), the second positioning mechanism (120) is arranged on the base (100), the second positioning mechanism (120) includes a second positioning surface (121), and the first positioning surface (111) is arranged opposite to the second positioning surface (121); Wherein, the first positioning mechanism (110) and the second positioning mechanism (120) are relatively movable, so as to clamp a plurality of batteries (1) between the first positioning surface (111) and the between the second positioning surfaces (121). 3. The stacking device according to claim 2, characterized in that, the base (100) is provided with a positioning slider (101) for placing the battery (1), and the positioning slider (101) is relative to The base (100) is movably arranged. 4. The stacking device according to claim 3, characterized in that there are multiple positioning sliders (101), and each battery (1) corresponds to a direction perpendicular to the stacking direction of the battery pack. at least one positioning slider (101); Wherein, along the stacking direction of the battery pack, the length of the positioning slider (101) attached to the battery (1) is not greater than the thickness of the battery (1). 5. The stacking device according to claim 1, characterized in that, the alignment mechanism (130) comprises: a drive plate (131), the drive plate (131) is arranged on the base (100), the drive plate (131) includes a reference plane (1311), and the reference plane (1311) is along the stack of the battery pack direction extension; At least two protrusions (132), each of the protrusions (132) is arranged on the reference plane (1311) at intervals along the stacking direction of the battery pack, and is used to be in contact with the side of the battery (1) combine. 6. The stacking device according to claim 5, characterized in that, the protrusions (132) are configured to correspond to the batteries (1) one by one; Wherein, along the stacking direction of the battery pack, the length of the protrusion (132) attached to the side of the battery (1) is not greater than the thickness of the battery (1). 7. The stacking device according to claim 6, characterized in that, the protrusion (132) is movably arranged relative to the driving plate (131) along the stacking direction of the battery pack. 8. The stacking device according to claim 5, characterized in that, the alignment mechanism (130) further comprises: The base plate is detachably mounted on the base (100), and the drive plate (131) is arranged on the base plate. 9. The stacking device according to claim 1, characterized in that, the stacking device further comprises a welding pressing mechanism, the welding pressing mechanism is arranged on the base (100), and the welding pressing mechanism is used for Pressing the first bus bar (2) to the second bus bar (3), and/or, the welding pressing mechanism is used to press the signal collection end (5) of the circuit board (4) to the first bus bar ( 2). 10. The stacking device according to claim 9, wherein the welding pressing mechanism comprises: a base plate, the base plate is detachably mounted on the base (100); a connecting piece, the connecting piece is arranged on the substrate; A pressing block, the pressing block is arranged on the connecting piece, and the pressing block forms an avoidance space for welding. 11. The stacking device according to claim 10, wherein the base plate is movably arranged along the stacking direction of the battery pack, and/or, the base plate is movable in a direction approaching or away from the battery pack Mobile settings. 12. The stacking device according to claim 11, characterized in that, the base (100) is provided with a base plate (102), and the base plate is detachably mounted on the base plate (102); Wherein, the bottom plate (102) is movably arranged relative to the base (100) along the stacking direction of the battery pack, and/or, the bottom plate (102) is close to or The direction away from the battery pack is movably set. 13. The stacking device according to claim 10, wherein there are a plurality of the connectors and the pressing blocks, a plurality of the connectors are arranged on the substrate, and each of the connectors has The pressing block is provided. 14. The stacking device according to any one of claims 9 to 13, wherein the welding pressing mechanism comprises: A first welding pressing mechanism (140), the first welding pressing mechanism (140) is used to press the first bus bar (2) to the second bus bar (3); A second welding pressing mechanism (150), the second welding pressing mechanism (150) is used to press the signal collection end (5) to the first bus bar (2); Wherein, the first welding pressing mechanism (140) and the second welding pressing mechanism (150) are optionally installed on the base (100). 15. The stacking device according to claim 1, further comprising: A limiter (160), the limiter (160) spans a plurality of the batteries (1) of the battery pack, and the limiter (160) is used to connect the casing of the battery pack ( 6) The two opposite connecting parts (7). 16. An assembly line for battery packs, comprising the stacking equipment according to any one of claims 1-15. 17. The assembly line of the battery pack according to claim 16, characterized in that, the assembly line further comprises: Welding mechanism; Wherein, the welding mechanism is used for welding the busbar and pole of the battery (1); or, the welding mechanism is used for welding the first busbar (2) and the second busbar (3); or, the welding The mechanism is used for welding the signal collecting end (5) and the first bus bar (2). 18. A method for assembling a battery pack, comprising: providing a battery (1) with a bus bar; stacking a plurality of batteries (1), and making the first busbar (2) of one adjacent battery (1) and the second busbar (3) of another battery (1) stick to each other; aligning each of said cells (1); The aligned plurality of said batteries (1) is clamped. 19. The method for assembling the battery pack according to claim 18, further comprising: pressing said first busbar (2) to said second busbar (3); The first bus bar (2) and the second bus bar (3) are welded. 20. The method for assembling the battery pack according to claim 19, further comprising: pressing the signal acquisition end (5) of the circuit board (4) to the first bus bar (2); Welding the signal collecting end (5) and the first bus bar (2). 21. The method for assembling a battery pack according to claim 20, further comprising: Each of the batteries (1) is bound with a cable tie (8). 22. The method for assembling a battery pack according to claim 21, characterized in that binding each of the batteries (1) with a cable tie (8) comprises: The casing (6) is bound with the cable tie (8), so as to fix each of the batteries (1) in the casing (6). 23. The method for assembling a battery pack according to claim 22, further comprising: Before utilizing the cable tie (8) to bind the casing (6), The two ends of the limiting member (160) are respectively connected to the two opposite connecting parts (7) of the housing (6). 24. The method for assembling a battery pack according to claim 18, characterized in that aligning each of the batteries (1) comprises: The aligning mechanism (130) is used to attach to the side of each battery (1), and the aligning mechanism (130) is made to avoid the bus bar located on the side of the battery (1). 25. The method for assembling a battery pack according to any one of claims 18 to 24, wherein stacking a plurality of batteries (1) comprises: Multiple batteries (1) are stacked on the base (100) in sequence, and the stacking direction of the battery pack is parallel to the base (100). 26. The method for assembling a battery pack according to claim 25, characterized in that, each of the batteries (1) is respectively placed on the positioning slider (101) of the base (100); When the first positioning mechanism (110) and the second positioning mechanism (120) are used to compress a plurality of the batteries (1), the batteries (1) drive the positioning slider (101) along the stack of the battery pack The direction moves relative to the base (100). 27. The method for assembling a battery pack according to any one of claims 18 to 24, wherein stacking a plurality of batteries (1) comprises: Multiple batteries (1) are stacked on the base (100) in sequence, and the stacking direction of the battery pack is perpendicular to the base (100). 28. A battery pack, characterized by comprising a battery pack assembled by the method for assembling a battery pack according to any one of claims 18 to 27.

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