CN219321500U

CN219321500U - Insulating primer gasket of square battery and square battery

Info

Publication number: CN219321500U
Application number: CN202222963861.2U
Authority: CN
Inventors: 吴传官; 黄谦; 陈浩峰; 梁向龙; 胡万军
Original assignee: Dongguan Langtaitong Technology Co ltd
Current assignee: Dongguan Langtaitong Technology Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-07-07
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses an insulating primer gasket of a square battery and the square battery, which are used for being assembled on a cover plate main body of the square battery, and comprise a fixed plate which is used for being matched with the cover plate main body, and a first positioning rubber block and two second positioning rubber blocks which are both fixed on the same side of the fixed plate; the first positioning rubber block is arranged in the middle of the fixing plate, and the two second positioning rubber blocks are respectively arranged at two sides of the first positioning rubber block at intervals. According to the insulating primer gasket of the square battery and the square battery, the first positioning adhesive block and the second positioning adhesive block are arranged on one side of the fixing plate at the same time, so that the battery cells of the square battery are positioned and limited at the lower part in the shell in multiple positions, the shaking and moving of the inner battery cells in the use process of the battery are avoided, the battery cells are positioned and limited in a specific space in the battery, certain extrusion or friction to the lugs in the battery is avoided, and the safety of the battery is improved.

Description

Insulating primer gasket of square battery and square battery

[ field of technology ]

The utility model relates to the technical field of batteries, in particular to an insulating primer gasket of a square battery and the square battery.

[ background Art ]

As an important component of the new energy industry, lithium batteries serve as energy storage and energy conversion units for green energy sources such as wind energy, solar energy, smart grids, household energy storage and the like. Square batteries have also been increasingly developed as a type of lithium batteries because of their convenience in assembly, higher energy density, and the like. Wherein, the cover plate and the insulating bracket of the existing square battery generally adopt a split type framework. However, the insulating support cannot be completely fixed inside the battery, and when the battery is vibrated during use, certain extrusion or friction is generated on the tab inside the battery, which has certain influence on the safety of the battery.

In view of the foregoing, it is desirable to provide an insulating primer gasket for a prismatic battery and a prismatic battery to overcome the above-mentioned drawbacks.

[ utility model ]

The utility model aims to provide an insulating primer gasket of a square battery and the square battery, and aims to solve the problem that an insulating bracket of the conventional square battery cannot be completely fixed in the battery and avoid extrusion or friction to a tab in the battery.

In order to achieve the above purpose, the utility model provides an insulating primer gasket of a square battery, which is used for being assembled on a cover plate main body of the square battery, and comprises a fixed plate which is used for being matched with the cover plate main body, and a first positioning rubber block and two second positioning rubber blocks which are all fixed on the same side of the fixed plate; the first positioning rubber blocks are arranged in the middle of the fixing plate, and the two second positioning rubber blocks are respectively arranged at two sides of the first positioning rubber blocks at intervals.

In a preferred embodiment, the two second positioning glue blocks are respectively arranged at the end parts of the fixing plate opposite to the two ends of the first positioning glue block, and the edges of the second positioning glue blocks away from the first positioning glue blocks are flush with the edges of the fixing plate.

In a preferred embodiment, the first positioning glue block is provided with a plurality of through holes, and the central axis of each through hole is perpendicular to the normal direction of the plane where the fixing plate is located.

In a preferred embodiment, the diameter of the through hole is 1.0mm-5.0mm.

In a preferred embodiment, the fixing plate is further provided with a protective baffle vertically; the protection baffle is connected with the same side of the first positioning rubber block and the two second positioning rubber blocks at the same time.

In a preferred embodiment, the first positioning glue block and the two second positioning glue blocks are located on the same plane away from a side surface of the fixing plate.

In a preferred embodiment, the first positioning rubber block and the two second positioning rubber blocks are modified rubber blocks of electrolyte resistant to organic solvents or plastic rubber blocks of single component/composite component of electrolyte resistant to organic solvents.

In a preferred embodiment, the fixing plate is provided with a pole hole between the first positioning glue block and each second positioning glue block.

In a preferred embodiment, the fixing plate is provided with a plurality of reinforcing ribs at one side close to the first positioning rubber block.

The utility model also provides a square battery, which comprises the insulating primer gasket of the square battery in any one of the embodiments.

According to the insulating primer gasket of the square battery and the square battery, the first positioning adhesive block and the second positioning adhesive block are arranged on one side of the fixing plate at the same time, so that the battery cells of the square battery are positioned and limited at the lower part in the shell in multiple positions, the shaking and moving of the inner battery cells in the use process of the battery are avoided, the battery cells are positioned and limited in a specific space in the battery, certain extrusion or friction to the lugs in the battery is avoided, and the safety of the battery is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of an insulating primer gasket for a square battery provided by the utility model;

FIG. 2 is another perspective view of an alternative angle of the insulating primer pad of the prismatic battery of FIG. 1;

fig. 3 is a structural view of an insulating base gasket of a prismatic battery fixed in a cover main body.

Reference numerals in the drawings: 100. insulating primer gaskets of square batteries; 200. a cover plate main body; 201. a connecting sheet; 10. a fixing plate; 11. a protective baffle; 12. a post hole; 13. reinforcing ribs; 20. a first positioning glue block; 21. a through hole; 30. and a second positioning rubber block.

[ detailed description ] of the utility model

In order to make the objects, technical solutions and advantageous technical effects of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the utility model, and not to limit the utility model.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In the embodiment of the utility model, an insulating primer gasket 100 of a square battery is provided, as shown in fig. 3, and is used for being assembled on a cover plate main body 200 of the square battery, so that the cover plate main body 200 of the square battery is insulated from a shell, the occurrence of short circuit of the positive electrode and the negative electrode of the battery is avoided, and meanwhile, a winding cell or a lamination cell after being put into the shell is positioned and limited, and the cell is prevented from shaking and moving in the shell.

As shown in fig. 1 to 3, the insulating base rubber gasket 100 of the square battery includes a fixing plate 10 adapted to the cover plate body 200, and a first positioning rubber block 20 and two second positioning rubber blocks 30 both fixed to the same side of the fixing plate 10.

The fixing plate 10 is in a rectangular plate shape, and can be rounded at the vertex angle. The fixing plate 10 may be made of an insulating material such as a modified rubber block resistant to an electrolyte of an organic solvent or a single component/composite component plastic rubber block resistant to an electrolyte of an organic solvent, for example, SBR (styrene-butadiene rubber), PP (polypropylene), PET (polyethylene terephthalate), PPs (polyphenylene sulfide), etc., and is usually PP plastic, which has a high cost performance, so as to isolate the cover plate main body 200 of the square battery from the case.

The first positioning rubber block 20 and the second positioning rubber block 30 are substantially rectangular block-shaped, and are both insulating modified rubber blocks of electrolyte resistant to organic solvents, or single component/composite component plastic rubber blocks of electrolyte resistant to organic solvents, for example, SBR (styrene butadiene rubber), PP (polypropylene), PET (polyethylene terephthalate), PPs (polyphenylene sulfide) and the like, so that predetermined portions of the battery cells of the prismatic battery are abutted, so that the battery cells are fixed in predetermined positions within the housing. Wherein, the first positioning glue block 20 is disposed in the middle of the fixing plate 10, and the two second positioning glue blocks 30 are disposed at intervals on two sides of the first positioning glue block 20. It should be noted that, the specific mounting positions of the first positioning glue block 20 and the second positioning glue block 30 on the fixing plate 10 may be set correspondingly according to the fixing requirement of the battery cell in the housing, or may be set correspondingly according to the size of the battery cell.

Further, the two second positioning glue blocks 30 are respectively arranged at the end parts of the fixing plate 10 opposite to the two ends of the first positioning glue block 20, and the edges of the second positioning glue blocks 30 away from the first positioning glue block 20 are flush with the edges of the fixing plate 10, so that the edges of the fixing plate 10 can be flush with the edges of the cover plate main body 200 of the square battery, and the fixing plate 10 can be processed easily.

Further, the first positioning glue block 20 and the two second positioning glue blocks 30 are located on the same plane away from the surface of one side of the fixing plate 10, so that the local protruding structure is avoided to jack up the cover plate main body 200, and a gap structure is formed in the cover plate main body 200 to affect the stability of the whole cover plate main body 200.

In one embodiment, as shown in fig. 1 and 2, the first positioning glue block 20 is provided with a plurality of through holes 21. The central axis of the through hole 21 is perpendicular to the plane normal of the fixing plate 10. Wherein the through hole 21 is a round hole with the diameter of 1.0mm-5.0mm. The plurality of through holes 21 are explosion-proof valve positions in the corresponding areas of the cover main body 200. Therefore, the plurality of through holes 21 are formed in the first positioning glue block 20, so that the gas and air flow in the battery can smoothly reach the position of the explosion-proof valve, the starting of the explosion-proof valve of the battery is not influenced by the change of the structure of the insulating primer gasket, the safety of the battery is ensured, and the safety performance of the battery is not reduced due to the change of the structure of the insulating primer gasket.

In one embodiment, the fixing plate 10 is further provided with a protective baffle 11 vertically. The protective baffle 11 is connected with the same side of the first positioning rubber block 20 and the two second positioning rubber blocks 30 at the same time. The protective baffle 11 can improve the insulation effect of the whole gasket; meanwhile, the first positioning rubber block 20 and the second positioning rubber block 30 can be connected, and the fixing strength of the whole gasket is improved. It should be noted that, only one side of the first positioning glue block 20 and the second positioning glue block 30 is provided with the protective baffle 11, and the other side is not provided with the protective baffle 11, so that the positive and negative electrode connecting pieces 201 of the cover plate main body 200 extend out of the cover plate in a flat manner, and are also spaces reserved for facilitating welding between the connecting pieces 201 and the tabs of the cover plate main body 200.

In one embodiment, the fixing plate 10 has a pole hole 12 between the first positioning glue block 20 and each second positioning glue block 30. That is, the number of the pole holes 12 on the fixing plate 10 is two, so that the positive and negative pole pieces connected with the battery cells can be conveniently introduced respectively.

In one embodiment, the fixing plate 10 is provided with a plurality of reinforcing ribs 13 at a side close to the first positioning glue block 20. The reinforcing ribs 13 are arranged in a crisscross manner and are arranged between the first positioning rubber block 20 and the second positioning rubber block 30 so as to strengthen the structural strength of the fixing plate 10.

The utility model also provides a square battery comprising the insulating primer gasket 100 of the square battery according to any one of the above embodiments.

In summary, according to the insulating base adhesive gasket 100 of the square battery and the square battery provided by the utility model, the first positioning adhesive block 20 and the second positioning adhesive block 30 are simultaneously arranged on one side of the fixing plate 10, so that the battery cells of the square battery are positioned and limited at the lower part in the shell in multiple positions, the release and the movement of the internal battery cells in the use process of the battery are avoided, the battery cells are positioned and limited in a specific space in the battery, the generation of certain extrusion or friction to the lugs in the battery is avoided, and the safety of the battery is improved.

The present utility model is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the utility model is not limited to the specific details, representative apparatus and illustrative examples shown and described herein.

Claims

1. The insulating primer gasket of the square battery is used for being assembled on a cover plate main body of the square battery and is characterized by comprising a fixing plate which is used for being matched with the cover plate main body, and a first positioning adhesive block and two second positioning adhesive blocks which are all fixed on the same side of the fixing plate; the first positioning rubber blocks are arranged in the middle of the fixing plate, and the two second positioning rubber blocks are respectively arranged at two sides of the first positioning rubber blocks at intervals.

2. The insulating primer gasket of claim 1 wherein said two second positioning blocks are disposed at opposite ends of said mounting plate from said first positioning blocks, respectively, and wherein the edges of said second positioning blocks remote from said first positioning blocks are flush with the edges of said mounting plate.

3. The insulating primer gasket of claim 1 wherein said first positioning block is provided with a plurality of through holes, the central axis of said through holes being perpendicular to the plane normal to which said fixing plate is located.

4. The insulating primer pad for a prismatic battery according to claim 3, wherein the diameter of the through hole is 1.0mm to 5.0mm.

5. The insulating primer gasket of a prismatic cell according to claim 1, wherein said fixing plate is further provided vertically with a protective baffle; the protection baffle is connected with the same side of the first positioning rubber block and the two second positioning rubber blocks at the same time.

6. The insulating primer gasket of claim 1 wherein said first positioning glue block and said two second positioning glue blocks are located on the same plane away from a side surface of said fixing plate.

7. The insulating base rubber gasket of claim 1, wherein the first positioning rubber block and the two second positioning rubber blocks are both insulating modified rubber blocks of electrolyte resistant to organic solvents or plastic rubber blocks of single component/composite component of electrolyte resistant to organic solvents.

8. The insulating primer gasket of claim 1 wherein said mounting plate defines a post hole between said first and each of said second positioning blocks.

9. The insulating primer gasket of claim 1 wherein said mounting plate is provided with a plurality of ribs on a side adjacent said first positioning block.

10. A prismatic battery comprising an insulating primer pad for a prismatic battery according to any of the claims 1-9.