CN114156435B - A new type of electrode connecting sheet for gel lithium battery - Google Patents

Abstract

The present invention relates to the technical field of lithium batteries, and in particular to an electrode connecting piece of a novel gel lithium battery. The electrode connecting piece of the novel gel lithium battery comprises an intermediate body and a connecting terminal. A plurality of connecting bent plates are symmetrically arranged on both sides of the intermediate body made of insulating material. Grooves are provided on the inclined walls of the connecting bent plates on the side away from the intermediate body. Electrode sheets are installed together in the grooves. A lead terminal is fixedly connected to one end of the electrode sheet. A through hole is provided on the end of the connecting bent plate away from the intermediate body. The connecting terminal for connecting the battery pole is arranged directly above the through hole of the connecting bent plate, and the connecting terminal is fixedly connected to the electrode sheet on the same side. The electrode connecting piece of the novel gel lithium battery provided by the present invention has the advantages of firm installation, reliable conductivity, and convenient battery pack installation.

Description

A new type of electrode connecting sheet for gel lithium battery

Technical Field

The invention relates to the technical field of lithium batteries, and in particular to an electrode connecting sheet of a novel gel lithium battery.

Background technique

The full name of gel battery is polymer lithium battery. The raw materials are electrolytes, including polymer electrolytes and organic electrolytes. Polymer lithium batteries (gel batteries) use aluminum-plastic film as the shell. When organic electrolytes are used inside, they will not explode even if the liquid is very hot. Under the influence of external forces, they will at most smoke but will not explode. Gel batteries can be made very thin due to their inherent material advantages. They can be made into any area and shape because their electrolytes can be solid or gelatinous instead of liquid. The thinner the gel battery is, the easier it is to produce. It is not easy to increase the capacity of the gel battery, and the relative cost will be higher.

Therefore, for small and thin gel lithium batteries, traditional battery connectors cannot connect multiple gel batteries in parallel or in series, making assembly and connection difficult. During use, the connectors are prone to loosening.

Therefore, it is necessary to provide a new type of electrode connecting sheet for gel lithium battery to solve the above technical problems.

Summary of the invention

In order to solve the above technical problems, the present invention provides a new type of electrode connecting sheet for gel lithium battery which has firm installation and reliable conductivity.

The electrode connecting piece of the novel gel lithium battery provided by the present invention comprises: an intermediate body and a connecting terminal. A plurality of connecting bent plates are symmetrically arranged on both sides of the intermediate body made of insulating material. Grooves are provided on the inclined walls of the connecting bent plates on the side away from the intermediate body. The electrode sheet is installed together in the grooves. A lead terminal is fixedly connected to one end of the electrode sheet. A through hole is provided at one end of the connecting bent plate away from the intermediate body. The connecting terminal for connecting the battery pole is arranged directly above the through hole of the connecting bent plate, and the connecting terminal is fixedly connected to the electrode sheet on the same side.

Preferably, the wiring terminal comprises an electrode plate, a welding foot and a connection foot. The electrode plate is fixedly mounted on the electrode sheet, and the two side walls of the electrode plate are fixedly connected with the welding foot, and the lower surface of the electrode plate is provided with a connection foot.

Preferably, the electrode sheet, electrode plate and electrical connection pins are all made of pure copper.

Preferably, there are two power connection pins, and the two power connection pins are symmetrically arranged based on the welding pin.

Preferably, a silver-plated layer is provided at the bottom end of the electrical connection pin.

Preferably, the electrode plate is provided with a threaded hole between the two power connection pins, and a locking screw is threadedly connected in the threaded hole.

Preferably, the locking screw is made of copper.

Preferably, a limiting plate is fixedly mounted on one side of the through hole of the connecting bent plate, and the limiting plate is provided with a limiting groove, and the width of the limiting groove is equal to the thickness of the electrode plate.

Preferably, the connecting bent plate is made of ceramic material.

Preferably, the diameter of the through hole is slightly larger than the diameter of the battery terminal.

Compared with the related art, the electrode sheet of the novel gel lithium battery provided by the present invention has the following beneficial effects:

1. The present invention provides a novel electrode sheet of a gel lithium battery. The electrode sheet is welded to the battery pole by a welding foot through a connection terminal provided on a connection bent plate. The welding foot tightly connects the power connection foot at the bottom of the electrode sheet to the battery electrode after welding. Then, the battery is connected in parallel through the electrode sheet. Then, the locking screw is rotated. When the locking screw contacts the battery pole downward, a certain pre-tightening force is applied to the welded electrode sheet, so that the power connection foot symmetrically based on the welding foot is closely attached to the battery pole, and stable power conduction is performed.

The electrode plate is further restricted and fixed by setting a limit plate on one side of the connecting bent plate and opening a limit groove for inserting the electrode plate. By setting a through hole slightly larger than the battery pole to clamp it on the battery pole, the entire battery connecting piece is conveniently fixed on the battery pack.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a preferred embodiment of an electrode connecting sheet of a novel gel lithium battery provided by the present invention;

FIG2 is a schematic structural diagram of an electrode connecting sheet of a novel gel lithium battery provided by the present invention from another perspective;

FIG3 is a schematic diagram of the structure of the wiring terminal shown in FIG1 ;

FIG4 is a partial enlarged view of a shown in FIG2;

FIG. 5 is a schematic diagram of the structure of the electrode connecting piece shown in FIG. 1 being installed on a battery pack.

Numbers in the figure: 1, intermediate body; 2, connecting bent plate; 201, groove; 202, through hole; 21, limit plate; 211, limit groove; 3, electrode connecting piece; 4, wiring terminal; 41, electrode plate; 42, welding foot; 43, connecting foot; 431, silver plating layer; 44, locking screw; 5, lead terminal; 6, battery pack.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

Please refer to FIG. 1 to FIG. 5 , which illustrate a novel electrode connecting piece for a gel lithium battery provided in an embodiment of the present invention. The novel electrode connecting piece for a gel lithium battery comprises an intermediate body 1 and a connecting terminal 4 .

A plurality of connecting bent plates 2 are symmetrically arranged on both sides of the intermediate body 1 of insulating material, and grooves 201 are provided on the inclined walls of the connecting bent plates 2 facing away from the intermediate body 1, and electrode sheets 3 are installed together in the grooves 201, and a lead terminal 5 is fixedly connected to one end of the electrode sheet 3. A through hole 202 is provided at the end of the connecting bent plate 2 facing away from the intermediate body 1, and a connecting terminal 4 for connecting the battery pole is arranged directly above the through hole 202 of the connecting bent plate 2, and the connecting terminal 4 is fixedly connected to the electrode sheet 3 on the same side.

It should be noted that: when in use, multiple batteries are fixed together using a battery box to form a battery pack 6, and then the intermediate 1 is fixedly installed on the battery pack 6, and the positive and negative poles of the batteries are connected together one by one using the wiring terminals 4, and finally a parallel connection is formed through the electrode sheet 3, and then the power connection output of the battery pack 6 is performed through the lead terminal 5. The entire electrode connecting sheet can be quickly welded and fixed to the positive and negative poles of the battery of the battery pack 6 through the wiring terminal 4, and it is firmly fixed and the conductivity is stable.

Among them, the connecting bent plate 2 is made of ceramic, and the insulation and heat resistance of ceramic are used to facilitate the fixed installation of the conductive terminal 4 on the connecting bent plate 2. The connecting bent plate 2 can also block the heat generated by the electrical connection, so that the temperature is kept uniform when the electrical connecting piece is conductively connected.

Among them, the diameter of the through hole 202 is slightly larger than the diameter of the battery terminal, so that when the electrical connecting piece is installed, the through hole 202 can be used to quickly clamp on the battery terminal, and then the intermediate 1 is fixed on the battery pack 6. Here, the intermediate 1 is made of an aluminum-plastic film with the same material as the outer shell of the battery pack 6, and can be bonded to the battery pack 6 by glue, or fixed to the battery pack 6 by screws.

In an embodiment of the present invention, referring to Figures 1, 2, 3 and 4, the terminal block 4 includes an electrode plate 41, a welding foot 42 and a power connection foot 43. The electrode plate 41 is fixedly mounted on the electrode sheet 3, and the two side walls of the electrode plate 41 are fixedly connected with the welding foot 42, and the lower surface of the electrode plate 41 is provided with a power connection foot 43.

It should be noted that when the terminal 4 is connected, the electrode plate 41 is pressed onto the battery pole, and then the electrode plate 41 is welded to the battery pole using the welding foot 42. After welding, the electrode plate 41 squeezes the connecting foot 43 to always contact the battery pole, so that it can be connected to the battery.

In this embodiment, the electrode sheet 3, the electrode plate 41 and the connecting pin 43 are all made of pure copper. By using pure copper with high conductivity and cost performance as the medium for power conduction, the loss of power transmission can be minimized. Similarly, other metal materials with excellent conductivity, such as pure aluminum, can be used as a substitute.

There are two connecting pins 43, and the two connecting pins 43 are symmetrically arranged based on the welding pins 42, so that after welding, the welding pins 42 drive the electrode plate 41 to squeeze the two welding pins 42 to contact the battery pole, and the contact conduction is more stable and reliable.

In the embodiment of the present invention, referring to FIG. 4 , a silver-plated layer 431 is disposed at the bottom of the connecting pin 43 .

It should be noted that: after the connection pin 43 is plated with a silver layer, the conductivity of silver is better than that of copper, which can further reduce the power loss when the battery pole is connected to the connection pin 43 and improve the conductivity efficiency.

In the embodiment of the present invention, referring to FIG. 1 and FIG. 3 , the electrode plate 41 is provided with a threaded hole between two electrical connection pins 43 , and a locking screw 44 is threadedly connected in the threaded hole.

It should be noted that: after welding, the locking screw 44 is rotated, and the locking screw 44 moves closer to the battery pole until it contacts the battery pole, and continues to be rotated a certain number of times to drive the middle part of the electrode plate 41 away from the battery pole, thereby applying a certain pre-tightening force to the electrode plate 41, so that the symmetrically arranged power connection pins 43 and the battery pole are connected more tightly and firmly, and the conductivity is more stable.

The locking screw 44 is made of copper, so that the locking screw 44 contacts the battery electrode and the electrode plate 41 for power conduction.

In an embodiment of the present invention, referring to FIG. 4 , a limiting plate 21 is fixedly installed on one side of the connecting bent plate 2 located at the through hole 202 . The limiting plate 21 defines a limiting groove 211 , and the width of the limiting groove 211 is equal to the thickness of the electrode plate 41 .

It should be noted that: with such an arrangement, after the electrode plate 41 is welded, one end of the electrode plate 41 is passed through the limiting groove 211 , and the electrode plate 41 is bent and clamped on the limiting groove 211 , so as to further fix the electrode plate 41 and reduce the shaking of the electrode plate 41 .

The working principle of the electrode connecting sheet of the novel gel lithium battery provided by the present invention is as follows:

When in use, the gel batteries are fixed together to form a battery pack 6, and then according to the specific number of batteries, the electrode connecting piece with the same number of terminal blocks 4 is selected, and the electrode connecting piece is clamped on the battery pole of the battery pack 6 by using the through hole 202 on the connecting bent plate 2, and then the intermediate 1 and the battery pack 6 are fixed together, and then the electrode plate 41 is pressed on the battery pole, and then the electrode plate 41 is welded to the battery pole by using the welding foot 42. After welding, the electrode plate 41 squeezes the connecting foot 43 to always contact the battery pole, so that it can be connected to the battery. In this way, after the electrode plate 41 is welded, one end of the electrode plate 41 is Pass through the limiting groove 211, bend the electrode plate 41, and clamp it on the limiting groove 211 to further fix the electrode plate 41 and reduce the shaking of the electrode plate 41. Finally, turn the locking screw 44, and the locking screw 44 moves close to the battery pole until it touches the battery pole. Continue to rotate a certain number of circles to drive the middle part of the electrode plate 41 away from the battery pole, thereby applying a certain pre-tightening force to the electrode plate 41, so that the symmetrically arranged power connection pins 43 and the battery pole are more tightly and firmly connected, and the conductivity is more stable. At the same time, the electrical connection of the electrode connecting piece can be adjusted. The entire electrode connecting piece has the advantages of firm installation, reliable conductivity, and convenient installation.

The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims (6)

1. The utility model provides a novel electrode connection piece of gel lithium cell which characterized in that includes:

The novel high-voltage power supply comprises an intermediate body (1), wherein a plurality of connecting bent plates (2) are symmetrically arranged on two sides of the intermediate body (1) made of insulating materials, grooves (201) are formed in one side inclined wall, deviating from the intermediate body (1), of the connecting bent plates (2), electrode plates (3) are jointly mounted in the grooves (201), lead terminals (5) are fixedly connected to one ends of the electrode plates (3), and through holes (202) are formed in one ends, deviating from the intermediate body (1), of the connecting bent plates (2);

the wiring terminal (4) is used for connecting the battery pole, the wiring terminal (4) is arranged right above the through hole (202) of the connecting bent plate (2), and the wiring terminal (4) is fixedly connected with the electrode sheet (3) on the same side;

The wiring terminal (4) comprises an electrode plate (41), welding pins (42) and electric pins (43), wherein the electrode plate (41) is fixedly arranged on the electrode plate (3), the welding pins (42) are fixedly connected to two side walls of the electrode plate (41), and the electric pins (43) are arranged on the lower surface of the electrode plate (41);

the two electric pins (43) are arranged, and the two electric pins (43) are symmetrically arranged based on the welding pins (42);

A threaded hole is formed between the two electric pins (43) of the electrode plate (41), and a locking screw (44) is connected in the threaded hole in a threaded manner;

The connecting bent plate (2) is fixedly arranged on one side of the through hole (202) and provided with a limiting plate (21), the limiting plate (21) is provided with a limiting groove (211), and the width of the limiting groove (211) is equal to the thickness of the electrode plate (41).

2. The electrode connecting sheet of the novel gel lithium battery according to claim 1, wherein the electrode sheet (3), the electrode plate (41) and the electric pin (43) are all made of pure copper materials.

3. The electrode connecting piece of the novel gel lithium battery according to claim 1, wherein the bottom end of the electrical pin (43) is provided with a silver plating layer (431).

4. The electrode connecting piece of the novel gel lithium battery according to claim 1, wherein the locking screw (44) is made of red copper material.

5. The electrode connecting sheet of the novel gel lithium battery according to claim 1, wherein the connecting bent plate (2) is made of ceramic materials.

6. The electrode connection tab of a new gel lithium battery according to claim 1, characterized in that the diameter of the through hole (202) is slightly larger than the diameter of the battery's terminal post.