CN216145696U

CN216145696U - Battery cover plate and single battery

Info

Publication number: CN216145696U
Application number: CN202122036274.4U
Authority: CN
Inventors: 杜博炎
Original assignee: Sichuan Lingpai New Energy Technology Co ltd; Suzhou Lingpai New Energy Technology Co ltd; Hunan Lingpai New Energy Technology Co Ltd
Current assignee: Hunan Lingpai Energy Storage Technology Co ltd; Hunan Lingpai New Energy Research Institute Co ltd; Suzhou Lingpai New Energy Technology Co ltd; Hunan Lingpai New Energy Technology Co Ltd; Hengyang Lingpai New Energy Technology Co Ltd; Hunan Lead Power Dazhi Technology Inc
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-03-29
Anticipated expiration: 2031-08-26

Abstract

The utility model provides a battery cover plate and a single battery, wherein the battery cover plate comprises a first conductive block, a first pole column, a second conductive block, a second pole column, a top cover plate, first insulating upper plastic and insulating lower plastic, wherein the top cover plate is stacked on the insulating lower plastic, the first insulating upper plastic penetrates through the top cover plate and is stacked with the insulating lower plastic, the first pole column sequentially penetrates through the insulating lower plastic, the first insulating upper plastic and is connected with the first conductive block to form a first electrode of the single battery, the second pole column sequentially penetrates through the insulating lower plastic, the top cover plate and is connected with the second conductive block to form a second electrode of the single battery, and the first insulating upper plastic is of a hollow structure and wraps the first conductive block. Through will insulate go up plastic, top cap piece and insulating plastic and stack in proper order down to and insulating plastic parcel conducting block, not only battery apron has good structural characteristic, insulating characteristic and manufacturing convenience, effectively avoids battery cell's positive and negative electrode to contact the conductor and short circuit simultaneously moreover, improves battery security.

Description

Battery cover plate and single battery

Technical Field

The specification relates to the technical field of batteries, in particular to a battery cover plate of a single battery and the single battery.

Background

Batteries have a wide range of applications as devices for storing electrical energy, and the most common batteries are single batteries. The single battery generally includes a battery cover plate, and positive and negative electrodes are located on the same side of the battery cover plate and the upper ends thereof are exposed. The structural design can facilitate the connection of external equipment and the use of the single battery, but during production, storage and transportation, the exposed positive and negative electrodes are easy to simultaneously contact conductors such as metal, battery shells and the like to generate short circuit, so that a large amount of heat can be generated in the battery in a short time, the damage of the battery is easy to cause, and even dangerous conditions such as battery combustion, explosion and the like occur.

Disclosure of Invention

In view of the above, the present invention provides a battery cover plate and a single battery, in which the battery cover plate has good structural performance, and meets the requirements of convenience and manufacturability in assembling the battery cover plate and the battery, and the battery cover plate has good inter-electrode insulation performance, so that the risk of short circuit of positive and negative electrodes due to contact with a conductor can be avoided, and the safety and reliability of the battery can be improved.

The utility model provides a battery cover plate, which is realized by adopting the following technical scheme:

the utility model provides a battery cover plate, includes plastic, insulating lower plastic on first conducting block, first utmost point post, second conducting block, second utmost point post, top cap piece, the first insulation, top cap piece stack in on the plastic under the insulation, the plastic passes on the first insulation top cap piece with the plastic stacks under the insulation, first utmost point post passes in proper order the plastic under the insulation the plastic with first conducting block is connected in order to constitute the first electrode of battery cell, the second utmost point post passes in proper order the plastic under the insulation top cap piece with the second conducting block is connected in order to constitute battery cell's second electrode, the plastic is hollow structure in order to wrap up on the first insulation first conducting block.

In above-mentioned structure, battery apron's simple structure, easily equipment production, first conducting block is located the hollow structure department of plastic on the first insulation, wraps up first conducting block, avoids first electrode outwards to expose, prevents that two electrodes from contacting the conductor simultaneously and forming the short circuit.

The utility model also provides a scheme that the conductive hole of the first electrode is arranged at the upper part of the first insulating upper plastic.

The utility model also provides a scheme that a mounting hole is formed in the side surface of the first insulating upper plastic, so that the first conductive block is mounted from the side surface of the first insulating upper plastic through the mounting hole.

The utility model also provides a scheme that the first insulating upper plastic comprises rubber or plastic;

and/or the insulating lower plastic comprises rubber or plastic.

The utility model also provides a scheme, wherein the connection between the first pole and the first conductive block comprises laser welding or fusion welding;

and/or the connection between the second pole and the second conductive block comprises laser welding or fusion welding.

The utility model also provides a scheme, the battery cover plate further comprises a second insulating upper plastic, the second insulating upper plastic penetrates through the top cover plate and is stacked with the insulating lower plastic, the second pole column sequentially penetrates through the insulating lower plastic and the second insulating upper plastic and is connected with the second conductive block, and the second insulating upper plastic is of a hollow structure and wraps the second conductive block.

The utility model also provides a scheme that a mounting hole is formed in the side surface of the second insulating upper plastic, so that the second conductive block is mounted from the side surface of the second insulating upper plastic through the mounting hole.

The utility model also provides a scheme that the top cover plate is provided with a groove, and the second conductive block is arranged in the groove.

The utility model also provides a scheme that the shape of the first insulating upper plastic is different from that of the second conductive block;

and/or the size of the first insulating upper plastic is different from that of the second conductive block.

The utility model also provides a single battery, which comprises a battery body and the battery cover plate, wherein the battery cover plate is arranged on the battery body, so that the first pole and the second pole of the battery cover plate are connected with corresponding battery cores in the battery body.

The beneficial effects of the utility model at least comprise: the top cover plate is stacked on the insulating lower plastic cement, the first insulating upper plastic cement penetrates through the top cover plate and is stacked with the insulating lower plastic cement, the first pole column sequentially penetrates through the insulating lower plastic cement, the first insulating upper plastic cement is connected with the first conducting block to form a first electrode of the single battery, the second pole column sequentially penetrates through the insulating lower plastic cement, the top cover plate is connected with the second conducting block to form a second electrode of the single battery, and the first insulating upper plastic cement is wrapped on the first conducting block in a hollow structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of positive and negative electrode contact conductors of a single cell before modification;

FIG. 2 is a schematic side sectional view of a battery cell in a modified front cover plate;

FIG. 3 is a schematic diagram of a top view of a battery cell cover before modification;

FIG. 4 is a schematic side sectional view of a battery cover plate provided in accordance with the present invention;

FIG. 5 is a schematic diagram of a battery cover plate provided by the utility model for preventing positive and negative electrodes from contacting conductors in use of a single battery;

FIG. 6 is a schematic view of a battery cover plate according to the present invention, wherein the side surface of the upper insulating plastic is provided with a mounting hole;

FIG. 7 is a schematic diagram of a top view of a battery cover plate provided in accordance with the present invention;

FIG. 8 is a schematic side sectional view of a battery cover plate provided in accordance with the present invention;

the reference numbers used in the drawings are as follows:

1. a first conductive block; 2. a first pole column; 3. a second conductive block; 4. a second pole; 5. a top cover sheet; 6. plastic is arranged on the first insulation layer; 61. a first mounting hole; 7. insulating lower plastic cement; 8. plastic is arranged on the second insulation layer; 81. a second mounting hole; 9. and a conductive hole.

Detailed Description

The technical scheme of the utility model is specifically described by the following embodiments and the accompanying drawings.

In the specification, the same or similar reference numerals denote the same or similar components. The following description of the present invention is provided to illustrate its general inventive concept and should not be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of the present application.

In the description of the present specification, it should be understood that the terms of orientation such as "upper", "lower", "inner", "outer", "side", and the like, which are described in the exemplary embodiments of the present specification, are described at angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present specification.

Generally, as shown in fig. 1, in a single battery 100 with a large capacity, such as a block-shaped lithium battery, a first electrode 101 (e.g., a negative electrode) and a second electrode 102 (e.g., a positive electrode) of the single battery are usually located on the same side (e.g., the top of the battery), and the two electrodes are usually exposed, so that during manufacturing, handling, storage, use, etc., the two electrodes may be in short circuit accident due to contacting with a conductive material 200 at the same time, wherein the conductive material 200 may be, for example, a metal material part, a metal casing of another battery, etc., and once a short circuit occurs, a large amount of heat is generated inside the battery in a short time, which may cause damage or even discard the battery, and in a serious case, the battery may be easily ignited or exploded.

In order to prevent the short circuit accident of the single battery, through intensive research, analysis and improved exploration of the single electrode, in the improved exploration, a battery cover plate is proposed, as shown in fig. 2 and 3, the battery cover plate may include a first conductive block 1, a first pole 2, a second conductive block 3, a second pole 4, a top cover plate 5, a first insulating upper plastic 6, and an insulating lower plastic 7. Wherein, top plate 5 is piled up on insulating lower plastic 7, and top plate 5 is equipped with the mounting groove, and plastic 6 is arranged in this mounting groove on the first insulation, and then passes top plate 5 and pile up on insulating lower plastic 7.

The first pole 2 sequentially penetrates through the lower insulating plastic 7 and the upper first insulating plastic 6 from bottom to top and then is connected with the first conductive block 1, so that a first electrode of the single battery is formed.

The second pole column 4 sequentially penetrates through the insulating lower plastic 7 and the top cover plate 5 from bottom to top and is connected with the second conductive block 3, and therefore a second electrode of the single battery is formed.

Through above-mentioned structure, although can reduce the risk that the short circuit takes place to a certain extent, in the production manufacturing, transport, storage etc. of battery cell, because operating mode environment is relatively complicated, still often because of two electrodes contact the conductor simultaneously and take place the battery short circuit incident.

In a further development, a new battery cover solution is proposed: as shown in fig. 4, on the basis of the earlier solution, the first insulating upper plastic 6 is modified, wherein the side wall of the first insulating upper plastic 6 extends upward and forms a hollow structure to wrap the first conductive block 1.

In implementation, the battery cover plate can include plastic 6, insulating lower plastic 7 on first conducting block 1, first utmost point post 2, second conducting block 3, second utmost point post 4, top cap piece 5, the first insulation, top cap piece 5 stack in insulating lower plastic 7, plastic 6 passes on the first insulation top cap piece 5 with plastic 7 stacks under the insulation, first utmost point post 2 passes in proper order plastic 7 under the insulation plastic 6 with first conducting block 1 connects the first electrode in order to constitute battery cell, second utmost point post 4 passes in proper order plastic 7 under the insulation top cap piece 5 with second conducting block 3 connects in order to constitute battery cell's second electrode, plastic 6 is hollow structure in order to wrap up on the first insulation first conducting block 1.

The first conductive block 1 is matched with the first pole column 2, and the second conductive block 3 is matched with the second pole column 4 and used for connecting external equipment and the interior of the battery cell to perform charging and discharging work.

The top cover plate 5 is a main structure of the battery cover plate and is used for supporting and connecting all components.

Wherein, insulating plastic 6 is located insulating plastic 7 down on to wrap up first conducting block 1, keep apart first electrode, thereby keep apart first electrode and top cap piece 5, second electrode, avoid the short circuit.

Wherein, the insulating lower plastic 7 is positioned below the top cover plate 5 to isolate the top cover plate 5 and the first electrode, thereby avoiding short circuit.

It should be noted that, after the first conductive block 1 is wrapped by the first insulating upper plastic 6, a conductive hole for externally connecting the first conductive block 1 may be reserved, so that an external device may be connected to the first electrode through the conductive hole for use, such as power supply, charging, discharging, and the like.

The improved structure does not change the structural composition of the battery cover plate, keeps good structural design, keeps convenience and manufacturability, and can still be produced and manufactured by using the original production process flow.

Through improving the shape of plastic 6 on the first insulation, except carrying out good insulation protection to first conducting block 1, also provide insulation protection in the top of first utmost point post 2, increased insulation protection area, provide more omnidirectional protection for first utmost point post 2.

As shown in fig. 5, even if the positive and negative poles of the single battery contact the conductor at the same time, the first electrode can be effectively protected by the first insulating upper plastic 6, so that the insulating protection level of the battery cover plate is improved, the occurrence of a battery short circuit event is avoided, and the single battery can better cope with various surrounding complex environments.

It should be noted that, according to the actual situation of the battery, the first electrode may be a negative electrode or a positive electrode, and the second electrode may be a positive electrode or a negative electrode, respectively, and is not limited herein.

In one embodiment, the conductive hole 9 of the first electrode is disposed on the upper portion of the first insulating upper plastic 6.

Through the arrangement of the position of the conductive hole 9, the external equipment can be connected with two electrodes of the single battery from the same side, and convenience is provided for the connection of the external equipment.

In addition, when manufacturing the battery cover plate, the conductive hole 9 can facilitate the connection of the first conductive block 1 and the first pole 2, and the convenience and manufacturability of the battery cover plate assembly are met.

In some embodiments, the conductive hole 9 is located at the upper part of the first insulating upper plastic 6, when the battery cover plate is assembled, the first conductive block 1 and the first terminal post 2 are connected by laser welding or fusion welding at the position of the conductive hole 9, a tool device can access the first conductive block 1 and the first terminal post 2 from the conductive hole 9 to fix the first conductive block 1 and the first terminal post 2, and the conductive hole 9 provides an operation space for the tool device to move on the surface of the first conductive block 1, thereby improving the working efficiency.

In one embodiment, as shown in fig. 6 and 7, a mounting hole 61 is provided on a side surface of the first insulating upper plastic 6, and the first conductive block 1 is inserted into the first insulating upper plastic 6 from the side surface thereof through the mounting hole 61.

This structure optimization, independent passageway has been seted up for the first conducting block 1 of installation to mounting hole 61 to the side of plastic 6 is gone up in the first insulation to mounting hole 61, when the installation, can follow top cap piece 5 and push into first conducting block 1, the equipment operation of the battery apron of being convenient for has optimized the installation operation, facilitates for production, improves production efficiency.

For ease of understanding, the following is a description of an assembly process of a battery cover plate including the mounting holes 61:

firstly, combining a top cover plate 5, a first insulating upper plastic 6 and an insulating lower plastic 7;

secondly, inserting the first conductive block 1 from the side surface of the first insulating upper plastic 6 through the mounting hole 61;

thirdly, placing the second conductive block 3 at the mounting position of the top cover sheet 5;

fourthly, mounting the first pole post 2 and the second pole post 4,

and fifthly, fixedly connecting the first conductive block 1 with the first pole column 2, and fixedly connecting the second conductive block 3 with the second pole column 4.

In some embodiments, the first insulating upper plastic 6 may be made of rubber or plastic.

In some embodiments, the insulating lower plastic 7 may be made of rubber or plastic as a raw material of the component.

The rubber and the plastic are good insulating materials, have good processing performance, and can reduce the production and manufacturing cost and improve the production and manufacturing efficiency.

It should be noted that the first insulating upper plastic 6 and/or the insulating lower plastic 7 are not limited to rubber or plastic, and any material with insulating property can be selected according to actual production needs to be used for manufacturing the above components.

In some embodiments, the connection manner between the first electrode post 2 and the first conductive block 1 may be laser welding or fusion welding.

In some embodiments, the connection between the second pole piece 4 and the second conductive block 3 may be laser welding or fusion welding.

The laser welding or fusion welding equipment is simple, has the advantages of high speed and large depth, and is suitable for application in production and manufacturing. Laser welding or butt fusion can provide firm connection, guarantees the electrically conductive effect of electrode.

It should be noted that, the connection mode between the first pole 2 and the first conductive block 1, and/or the connection mode between the second pole 4 and the second conductive block 3 are not limited to laser welding or fusion welding, and any suitable connection mode may be selected according to actual production needs for connecting the above components.

In one embodiment, as shown in fig. 8, the second conductive block 3 is wrapped in the same manner as the first conductive block 1 to provide insulation protection for the second electrode. Similarly, the second insulating upper plastic 8 is a hollow structure to wrap the second conductive block 3, and the structural composition of the second electrode may refer to the structural composition of the first electrode, which is not described herein again.

Through the mode of this kind of parcel first conducting block 1 and second conducting block 3 simultaneously, further increased the insulation protection area of battery apron, provided independent insulation protection for first electrode and second electrode respectively, further promoted the security of battery.

In one embodiment, a mounting hole 81 is formed in a side surface of the second insulating upper plastic 8, and the second conductive bump 3 enters the second insulating upper plastic 8 from the side surface of the second insulating upper plastic 8 through the mounting hole 81. Thus, the second conductive block 3 can be mounted from the side by using the mounting hole 81 as an independent mounting passage, so that the mounting operation is optimized, and the improvement of the production efficiency is facilitated.

In one embodiment, the top cover sheet 5 is provided with a groove in which the second conductive block 3 is mounted. Through the groove, a fixed position for mounting the second conductive block 3 can be provided during the process of assembling the battery cover plate, and the assembly operation is facilitated.

In the actual production and application process, the first electrode and the second electrode are distinguished, so that convenience and safety can be brought. Although the first electrode is covered by the first insulating upper plastic 6, the shape of which is different from that of the second conductive block 3 as the second electrode, which brings certain convenience for distinguishing the positive and negative of the electrodes, it can provide more advantages if more obvious distinguishing marks are provided for the two electrodes.

In one embodiment, the shape of the first insulating upper plastic 6 is different from the shape of the second conductive block 3.

In one embodiment, the size of the first insulating upper plastic 6 is different from the size of the second conductive block 3.

The first insulating upper plastic 6 and the second conductive block 3 are different in shape and/or size, so that the first electrode and the second electrode can be identified more conveniently, parts forming each electrode can be identified in the process of assembling the battery, and convenience is provided for the assembling process; and the electrode identification is facilitated in the process of using the single battery, and the danger caused by the reverse connection of the electrode is avoided.

Based on the same inventive concept, embodiments of the present specification further provide a single battery, where the single battery includes a battery body and the battery cover plate described in any one of the above paragraphs, and the battery cover plate is mounted on the battery body, so that the first terminal and the second terminal of the battery cover plate are connected to corresponding battery cells in the battery body.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a battery cover plate, its characterized in that goes up plastic, insulating plastic down including first conducting block, first utmost point post, second conducting block, second utmost point post, capping piece, first insulation, the capping piece stack in on the plastic under the insulation, the plastic passes on the first insulation the capping piece with the plastic stacks under the insulation, first utmost point post passes in proper order the plastic under the insulation the plastic first insulation go up the plastic with first conducting block is connected in order to constitute the first electrode of monomer battery, the second utmost point post passes in proper order the insulation down the plastic the capping piece with the second conducting block is connected in order to constitute the second electrode of monomer battery, the plastic is hollow structure in order to wrap up on the first insulation first conducting block.

2. The battery cover plate of claim 1, wherein the conductive hole of the first electrode is formed on an upper portion of the first insulating upper plastic.

3. The battery cover plate according to claim 1, wherein a side surface of the first insulating upper plastic is provided with a mounting hole to mount the first conductive bump from the side surface of the first insulating upper plastic through the mounting hole.

4. The battery cover plate of claim 1, wherein the first insulating upper plastic comprises rubber or plastic;

and/or the insulating lower plastic comprises rubber or plastic.

5. The battery cover plate according to claim 1, wherein the connection between the first terminal post and the first conductive block comprises laser welding or fusion welding;

6. The battery cover plate of claim 1, further comprising a second insulating upper plastic, wherein the second insulating upper plastic passes through the top cover piece and is stacked with the insulating lower plastic, the second pole sequentially passes through the insulating lower plastic, the second insulating upper plastic and is connected with the second conductive block, and the second insulating upper plastic is a hollow structure to wrap the second conductive block.

7. The battery cover plate according to claim 6, wherein the side surface of the second insulating upper plastic is provided with a mounting hole to mount the second conductive bump from the side surface of the second insulating upper plastic through the mounting hole.

8. The battery cover plate according to claim 1, wherein the top cover sheet is provided with a groove, and the second conductive block is mounted to the groove.

9. The battery cover plate according to any one of claims 1 to 8, wherein the shape of the first insulating upper plastic is different from the shape of the second conductive block;

10. A single battery, comprising a battery body and the battery cover plate as claimed in any one of claims 1 to 9, wherein the battery cover plate is mounted on the battery body, so that the first terminal and the second terminal of the battery cover plate are connected to corresponding battery cells in the battery body.