CN107068954A - A kind of battery module structure - Google Patents

Abstract

The present invention provides a kind of battery module structure, the positive pole of cell is electrically connected with by positive pole connector and anode collection area or positive pole output board, the negative pole of cell is electrically connected with by anode connector and negative pole currect collecting area or negative pole output board, cell is pluggable, and attachment structure is simple and easy to maintenance；Collector plate of connecting, into U-shaped, realizes the homonymy power taking of battery module structure in Z-shaped and folded array；While compact overall structure, space availability ratio height and good insulation preformance, safe and reliable.

Description

A battery module structure

【Technical field】

The invention relates to the technical field of batteries, in particular to a battery module structure.

【Background technique】

With the increasingly severe energy crisis, the new energy industry dominated by electricity is developing rapidly. The power battery is one of the core energy storage devices of various electronic products. Usually, multiple single batteries are first connected in parallel and then connected in series to achieve the voltage and power required by various electronic products. However, the existing battery connection technology relies on the way of welding bolts and nuts on the positive and negative electrodes of the battery, and achieves the purpose of connection through the fixed contact of the bolts. Fastening and assembling is not only time-consuming and labor-intensive, but also has a high cost, and at the same time, the space utilization rate is low, and disassembly is difficult, which is not conducive to maintenance.

In view of this, it is necessary to provide a new battery module structure to overcome the above defects.

【Content of invention】

The purpose of the present invention is to provide a battery module structure with simple connection, easy disassembly, high connection reliability and easy maintenance of single cells.

In order to achieve the above object, the present invention provides a battery module structure, including a single battery, a base, a negative connector, a positive connector, a series current collector, a positive output plate and a negative output plate; the single battery is Cylindrical, including a positive end face, a negative end face and a side wall connecting the positive end face and the negative end face, the positive end face is provided with a positive post; the base includes an upper surface and the upper surface The lower surface opposite to the surface, the lower surface is provided with a plurality of battery storage holes, and the upper surface is protruded with hollow cylindrical fixing posts corresponding to the battery storage holes; the series current collectors are in a Z shape, It includes a positive electrode current collecting area and a negative electrode current collecting area, the positive electrode current collecting area is provided with a through hole for the positive electrode, and the negative electrode current collecting area is provided with a negative electrode through hole through; a plurality of Z-shaped series current collecting plates alternate The positive current collecting area of the previous series current collecting plate is aligned with the negative current collecting area of the next series current collecting plate, and all the series series current collecting plates are arranged in a U-shape; the positive output plate and the negative output plate are respectively set At both ends of the U shape, the positive output plate is aligned with the negative current collecting area of the series current collecting plate at one end, and the negative output plate is aligned with the positive current collecting area of the series current collecting plate at the other end; The positive output plate is also provided with a positive through hole, and the negative output plate is also provided with a negative through hole; the positive connector is accommodated in a hollow fixed column, and is welded to the positive current collector of the series current collector plate. area or the positive output plate, the negative connector is accommodated in the battery receiving hole, and welded to the negative current collecting area or the negative output plate; one end of the single battery close to the positive end surface is inserted into the base seat, the positive post is inserted into the hollow fixing post, and the positive post is clamped on the positive connector, and the positive post is electrically connected to the positive current collecting area or the positive output plate through the positive connector. Sexual connection; the end of the single battery close to the positive end surface is accommodated in the battery receiving hole, and the side wall of the single battery is clamped on the negative connector, and the side wall of the bulk battery passes through the negative connector It is electrically connected with the negative electrode current collecting area or the negative electrode output plate.

In a preferred embodiment, the negative electrode connector includes an upper ring, a lower ring and a plurality of elastic sheets connecting the upper ring and the lower ring, the upper ring and the lower ring are arranged coaxially, And the diameters of the upper ring and the lower ring correspond to the diameter of the single battery.

In a preferred embodiment, the positive electrode connector includes a top ring, a bottom ring and a plurality of connecting pieces connecting the top ring and the bottom ring, the top ring and the bottom ring are arranged coaxially, And the diameters of the top ring and the bottom ring correspond to the diameter of the positive post of the single battery.

In a preferred embodiment, a plurality of first welding pieces are arranged at intervals on the upper ring, and the first welding pieces extend toward the direction close to the central axis of the upper ring to form a first welding portion, and the first welding pieces A welding part is welded on the negative current collecting area or the negative output plate.

In a preferred embodiment, a plurality of second welding pieces are arranged at intervals on the top ring, and the second welding pieces extend away from the central axis of the top ring to form a second welding portion. The second welding piece passes through the positive electrode through hole, and the second welding part is welded on the positive electrode current collecting area or the positive electrode output plate.

In a preferred embodiment, the inner diameter of the hollow fixing column corresponds to the diameter of the positive post, the diameter of the battery receiving hole corresponds to the diameter of the single battery, and the inner diameter of the fixing column is smaller than the diameter of the The diameter of the battery receiving hole.

In a preferred embodiment, the base is in the shape of a cuboid, and a baffle is provided on the edge of the base, and the height of the baffle is the same as that of the fixing column.

In a preferred embodiment, the surfaces of the series current collectors, the positive output plate and the negative output plate are all provided with insulating layers.

In a preferred embodiment, it also includes a collection box and a collection box fixing plate, the positive output plate and the negative output plate are all provided with connecting posts, and the connecting posts pass through the through holes on the collecting box fixing plate, and pass through Bolts fix the collection box, the positive output plate and the negative output plate on the base.

In a preferred embodiment, it also includes an insulating cover plate, the insulating cover plate and the series collector plate are locked on the base by bolts, the negative electrode current collecting area and the negative electrode output plate are against the base seat.

Compared with the prior art, in the battery module structure provided by the present invention, the positive pole of the single battery is electrically connected to the positive current collecting area or the positive output plate through the positive pole connector, and the negative pole of the single battery is connected to the negative pole collector through the negative pole connector. The current area or the negative output plate are electrically connected, the single battery is pluggable, the connection structure is simple and the maintenance is convenient; the series current collectors are in the shape of a Z and are arranged in a U shape, realizing the same side of the battery module structure Take electricity; at the same time, the overall structure is compact, the space utilization rate is high, the insulation performance is good, and the use is safe and reliable.

【Description of drawings】

Fig. 1 is a three-dimensional exploded schematic diagram of the battery module structure provided by the present invention;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is the enlarged view of place B in Fig. 1;

FIG. 4 is a schematic structural view of the base of the battery module structure shown in FIG. 1;

Fig. 5 is a cross-sectional view of the assembly of the single battery of the battery module structure shown in Fig. 1;

Fig. 6 is a structural schematic diagram of a negative electrode connector of the battery module structure shown in Fig. 1;

FIG. 7 is a schematic structural view of the positive connector of the battery module structure shown in FIG. 1;

Figure 8 is an enlarged view at C in Figure 1;

FIG. 9 is a schematic diagram of the assembly structure of the battery module structure shown in FIG. 1 .

【detailed description】

In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

Please refer to FIG. 1 and FIG. 2 together. The present invention provides a battery module structure 100, including a single battery 10, a base 20, a negative connector 30, a positive connector 40, a series current collector 50, and a positive output plate. 60 and negative output plate 70.

The single battery 10 is cylindrical, including a positive terminal surface 11, a negative terminal surface 12, and a side wall 13 connecting the positive terminal surface 11 and the negative terminal surface 12, and the positive terminal surface 11 is provided with a positive post 14 , the positive post 14 is the positive pole of the single battery 10 , and the negative end surface 12 and the side wall 13 are the negative pole of the single battery 10 . Specifically, the plurality of single cells 10 are arranged side by side.

Please refer to Fig. 1, Fig. 3, Fig. 4 and Fig. 5 together, described base 20 is substantially cuboid shape, comprises upper surface 21 and the lower surface 22 opposite to described upper surface 21, and described lower surface 22 is provided with A plurality of battery receiving holes 221 , the upper surface 21 is provided with a hollow cylindrical fixing post 23 coaxially arranged with the battery receiving holes 221 , and one fixing post 23 communicates with one battery receiving hole 221 correspondingly. Specifically, the inner diameter of the hollow fixing column 23 corresponds to the diameter of the positive post 14, the diameter of the battery receiving hole 221 corresponds to the diameter of the single battery 10, and the inner diameter of the fixing column 23 is smaller than the diameter of the The diameter of the battery receiving hole 221 is described above. In this embodiment, one end of the fixing post 23 extends toward the lower surface 22 to form an extension portion 231 , that is, the extension portion 231 is received in the battery receiving hole 221 . Specifically, the edge of the base 20 is also provided with a baffle 24, the height of the baffle 24 is the same as the height of the fixing column 23, and the baffle 24 is used to prevent dust, impurities, etc. from entering the base 10 internal.

Please refer to FIG. 6 , the negative electrode connector 30 is roughly in the shape of a crown spring, including an upper ring 31 , a lower ring 32 and a plurality of elastic pieces 33 connecting the upper ring 31 and the lower ring 32 . The circular ring 31 and the lower circular ring 32 are arranged coaxially, and the diameters of the upper circular ring 31 and the lower circular ring 32 correspond to the diameter of the single battery 10 . A plurality of first soldering pieces 34 are disposed at intervals on the upper ring 31 , and the first soldering pieces 34 extend toward a direction close to the central axis of the upper ring 31 to form a first welding portion 341 . In this embodiment, the number of the first welding pieces 34 is four, and the first welding pieces 34 are evenly spaced on the upper ring 31 .

Please refer to FIG. 7 , the positive connector 40 is also roughly crown-shaped, including a top ring 41, a bottom ring 42 and a plurality of connecting pieces 43 connecting the top ring 41 and the bottom ring 42. The top ring 41 and the bottom ring 42 are arranged coaxially, and the diameters of the top ring 41 and the bottom ring 42 correspond to the diameter of the positive post 14 of the single battery 10 . A plurality of second welding pieces 44 are arranged at intervals on the top ring 41 , and the second welding pieces 44 extend away from the central axis of the top ring 41 to form a second welding portion 441 . In this embodiment, the number of the second welding pieces 44 is four, and the second welding pieces 44 are evenly spaced on the top ring 41 .

Please refer to FIG. 7 and FIG. 8 together. The series collector plate 50 is Z-shaped and includes a positive electrode collector area 51 and a negative electrode collector area 52. The positive electrode collector area 51 is provided with a through hole 511 for the positive electrode. The negative electrode current collecting area 52 is opened with a negative electrode through hole 521 penetrating through it. In this embodiment, the diameter of the positive electrode through hole 511 corresponds to the diameter of the positive electrode protrusion 14, and the diameter of the positive electrode through hole 511 is approximately smaller than the diameter of the negative through hole 521 .

A plurality of Z-shaped series collector plates 50 are arranged overlappingly, that is, the positive current collector area of the previous series current collector plate 50 is aligned with the negative electrode current collector area of the next series current collector plate 50, and the next series current collector plate 50 The positive current collecting area of the plate 50 is aligned with the negative current collecting area of the next serial current collecting plate 50 , arranged in sequence. All series current collectors are arranged in a U-shape, and the series current collectors 50 at the unopened end of the U-shape are perpendicular to the arrangement direction of other series current collectors 50, so as to realize the rotation of the series series current collectors 50 arrangement. Specifically, the series current collector plate 50 realizes the electrical connection of the positive electrodes of all the single cells 10 connected to the positive electrode collector area 51 together, and realizes the electrical connection of all the single cells 10 connected to the negative electrode collector area 51. The negative electrodes are electrically connected together; the positive electrode current collecting area (or negative electrode current collecting area) of the previous series current collecting plate 50 is electrically connected with the negative electrode current collecting area (or positive electrode current collecting area) of the next series current collecting plate 50 .

Please refer to FIG. 1 again, the positive output plate 60 and the negative output plate 70 are respectively arranged at the two ends of the U shape, and the positive output plate 60 is aligned with the negative current collector of the series current collector plate 50 at one end. area 52, the negative output plate 70 is aligned with the positive current collecting area 51 of the series current collecting plate 50 at the other end. The positive output plate 60 is used as the positive output end of the entire battery module 100 , and the negative output plate 70 is used as the negative output end of the entire battery module 100 , so that the same side of the battery module structure 100 can be powered. The positive output plate 60 is also provided with a positive through hole, and the negative output plate 70 is also provided with a negative through hole. Specifically, the surfaces of the series current collector plate 50, the positive output plate 60 and the negative output plate 70 are all provided with an insulating layer to ensure their insulating properties. In this embodiment, the series current collector plate 50, the positive output plate 60 and the surface of the negative output plate 70 are sprayed with insulating varnish.

The battery module structure 100 provided by the present invention also includes a collection box 80 and a collection box fixing plate 81, the collection box 80 is fixed on one end of the base 20, specifically, the positive output plate 60 and the negative output plate 70 Both are provided with a connecting column 67, and the connecting column 67 passes through the through hole on the fixing plate 81 of the collecting box, and the collecting box 80, the positive output plate 60 and the negative output plate 70 are fixed on the base 20 by bolts . Specifically, the positive output board 60 and the negative output board 70 are electrically connected to the flexible cable (not shown) in the collection box 80 through the connecting column 67 to realize the transmission of electrical signals.

The battery module structure 100 provided by the present invention also includes an insulating cover plate 90, the insulating cover plate 90 and the series current collector plate 50 are locked on the base 20 by bolts, the negative electrode current collecting area 52 and the negative electrode output The plate 70 leans against the base 20 , and the insulating cover plate 90 further ensures the insulating property of the battery module structure 100 .

Please refer to FIG. 9 together. When assembling, firstly, weld the positive electrode connector 40 to the positive electrode current collecting area 51 of the series current collecting plate 50 or the positive electrode output plate 60, that is, the second welding piece 44 passes through the positive electrode output plate 60. The positive electrode through hole 511, the second welding part 441 is welded on the positive electrode current collecting area 51 or the positive electrode output plate 60;

Then, install the U-shaped series current collector plate 50, the positive output plate 60 and the negative output plate 70 on the base 20, and the fixing post 23 passes through the negative through hole 521 and leans against the base. On the positive collector area 51, the positive connector 40 is accommodated in the hollow fixing column 23, and the upper surface 21 of the base 20 is against the negative collector area 52;

Next, weld the first welding portion 341 of the negative electrode connector 30 to the negative electrode current collecting area 52 or the negative electrode output plate 70, and the negative electrode connector 30 is accommodated in the battery receiving hole 221;

Next, insert one end of all single batteries 10 close to the positive terminal surface 11 into the base 20, specifically, the positive post 14 is inserted into the hollow fixing post 23, and the positive post 14 Clamped on the positive connection piece 40, the positive pole post 14 (ie, the positive pole of the single battery 10) is electrically connected to the positive current collecting area 51 or the positive output plate 60 through the positive connection piece 40; the single battery 10, one end close to the positive terminal surface 11 is accommodated in the battery receiving hole 221, and the side wall 13 of the single battery is clamped on the negative electrode connector 30, and the side wall 13 of the body battery (that is, the single battery 10 The negative pole) is electrically connected with the negative electrode current collecting area 52 or the negative electrode output plate 70 through the negative electrode connector 30;

Finally, the collection box 80 is fixed on one end of the base 20 , and the insulating cover plate 90 is fixed on the U-shaped series current collector plate 50 by bolts.

In the battery module structure 100 provided by the present invention, the positive electrode of the single battery 10 is electrically connected to the positive current collecting area 51 or the positive output plate 60 through the positive electrode connector 40, and the negative electrode of the single battery 10 is connected to the negative electrode collector through the negative electrode connector 30. The flow area 52 or the negative output plate 70 are electrically connected, the single battery 10 is pluggable, the connection structure is simple and the maintenance is convenient; the series current collectors 50 are Z-shaped and arranged in a U-shape overlapping, realizing the battery module Power is taken from the same side of the structure 100; at the same time, the overall structure is compact, the space utilization rate is high, the insulation performance is good, and the use is safe and reliable.

The present invention is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and scope of the general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (10)

1. a kind of battery module structure, it is characterised in that：Including cell, pedestal, anode connector, positive pole connector, string Join collector plate, positive pole output board and negative pole output board；The cell to be cylindric, including positive pole end face, negative pole end face and Connect and be provided with positive pole projection on the positive pole end face, the side wall of the negative pole end face, the positive pole end face；

The pedestal includes upper surface and the lower surface relative with the upper surface, and the lower surface offers multiple battery containers Hole, the upper surface is convexly equipped with the fixed column of the connection corresponding with battery container hole of hollow cylindrical；

The series connection collector plate is in Z-shaped, including anode collection area and negative pole currect collecting area, and the anode collection area, which is offered, to be run through Positive pole through hole, the negative pole currect collecting area offers the negative pole through hole run through；The series connection collector plate folded array of multiple Z-shaped, The negative pole currect collecting area of the next series connection collector plate of anode collection area alignment of previous series connection collector plate, all series connection collector plate rows Arrange into U-shaped；

The positive pole output board and negative pole output board are respectively arranged at the two ends of U-shaped, the positive pole output board alignment wherein one The positive pole collection of series connection collector plate at the negative pole currect collecting area of series connection collector plate at end, the negative pole output board alignment other end Flow area；The positive pole output board also offers positive pole through hole, and the negative pole output board also offers negative pole through hole；

The positive pole connector is contained in hollow fixed column, and is welded in the anode collection area or just of the series connection collector plate On the output board of pole, the anode connector is contained in the battery container hole, and is welded in negative pole currect collecting area or negative pole output On plate；

The pedestal is inserted in one end of the close positive pole end face of the cell, and the positive pole projection insertion is described hollow to consolidate In fixed column, and the positive pole projection is fastened in the positive pole connector, and the positive pole projection passes through positive pole connector and positive pole collection Flow area or positive pole output board is electrically connected with；The cell is contained in the battery container hole close to one end of positive pole end face It is interior, and the side wall of cell is fastened in the anode connector, the side wall of the body battery passes through anode connector and negative pole Afflux area or negative pole output board are electrically connected with.

2. battery module structure as claimed in claim 1, it is characterised in that：The anode connector includes upper annulus, lower circle Ring and the multiple flexure strips for connecting the upper annulus and lower annulus, the upper annulus and lower annulus are coaxially disposed, and the upper circle The diameter of ring and lower annulus both corresponds to the diameter of the cell.

3. battery module structure as claimed in claim 2, it is characterised in that：The positive pole connector, which includes tip circle ring, bottom, to be justified Multiple connection sheets of ring and the connection tip circle ring and bottom annulus, the tip circle ring and bottom annulus are coaxially disposed, and the tip circle The diameter of ring and bottom annulus both corresponds to the diameter of the positive pole projection of the cell.

4. battery module structure as claimed in claim 3, it is characterised in that：Multiple first are arranged at intervals with the upper annulus Weld tabs, first weld tabs extends to form the first weld part to the direction close to upper circle ring center's axle, first welding Portion is welded on negative pole currect collecting area or negative pole output board.

5. battery module structure as claimed in claim 4, it is characterised in that：Multiple second are arranged at intervals with the tip circle ring Weld tabs, second weld tabs extends to form the second weld part to the direction away from the tip circle ring central shaft, second weld tabs Through the positive pole through hole, second weld part is welded on the anode collection area or positive pole output board.

6. battery module structure as claimed in claim 5, it is characterised in that：The internal diameter of the hollow fixed column corresponds to described The diameter of positive pole projection, the diameter in the battery container hole corresponds to the diameter of the cell, the internal diameter of the fixed column Less than the diameter in the battery container hole.

7. battery module structure as claimed in claim 6, it is characterised in that：The pedestal is rectangular-shape, the pedestal Edge is additionally provided with baffle plate, and the height of the baffle plate is identical with the height of the fixed column.

8. battery module structure as claimed in claim 1, it is characterised in that：The series connection collector plate, positive pole output board and negative The surface of pole output board is provided with insulating barrier.

9. battery module structure as claimed in claim 1, it is characterised in that：Also include collecting cassette and collecting cassette fixed plate, institute State positive pole output board and negative pole output board is provided with connecting pole, the connecting pole passes through logical in the collecting cassette fixed plate The collecting cassette, positive pole output board and negative pole output board, are fixed on pedestal by hole by bolt.

10. battery module structure as claimed in claim 1, it is characterised in that：Also include insulation cover plate, the insulation cover plate and Series connection collector plate is locked on the pedestal by bolt, and the negative pole currect collecting area and negative pole output board are resisted against the pedestal.