CN216120565U

CN216120565U - Battery cell shell and lithium ion battery

Info

Publication number: CN216120565U
Application number: CN202122384349.8U
Authority: CN
Inventors: 臧世伟
Original assignee: Chongqing Jinmei New Material Technology Co Ltd
Current assignee: Chongqing Jinmei New Material Technology Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-03-22
Anticipated expiration: 2031-09-29

Abstract

The utility model relates to a battery cell shell, which comprises a shell body with an opening at the top and a detachable shell cover, wherein elastic buffer assemblies are arranged on the left side wall and the right side wall of the shell body, each elastic buffer assembly comprises an elastic piece and a sliding piece, the elastic pieces are connected with the sliding pieces, the sliding pieces transversely move on the side walls of the shell body, so that the elastic pieces are transversely adjusted on the side walls, and a bottom plate of the shell body is provided with a heat dissipation opening. The battery cell shell protects the internal battery cell through the elastic buffer component on the side wall, when the battery cell expands, the elastic buffer component is extruded, the elastic buffer component deforms to provide an expansion space for the battery cell, and the shell is prevented from being directly extruded to burst; and the elastic buffer part can be transversely adjusted to match the structure of the battery cell, so that the battery cell is fully contacted with the elastic buffer part, and effective buffer protection is provided for the battery cell.

Description

Battery cell shell and lithium ion battery

Technical Field

The utility model relates to the field of lithium ion batteries, in particular to a battery cell shell and a lithium ion battery.

Background

The lithium ion battery has higher energy density, the service life of the lithium ion battery can be as long as 15 years according to the used chemical components, and compared with the traditional lead-acid storage battery, the replacement cost can be obviously saved, so the lithium ion battery is widely applied to a plurality of industries.

In the use process of the lithium ion battery, the lithium ion battery is found to expand when the lithium ion battery generates gas or continuously heats up due to heat generation, and the risk of explosion is caused.

The above problems are worth solving.

Disclosure of Invention

In order to overcome the problems of the prior art, the utility model provides a cell shell and a lithium ion battery.

The technical scheme of the utility model is as follows:

the battery cell shell comprises a shell body with an opening at the top and a detachable shell cover, and is characterized in that elastic buffering assemblies are arranged on the left side wall and the right side wall of the shell body and comprise elastic pieces and sliding pieces, the elastic pieces are connected with the sliding pieces, and the sliding pieces transversely move on the side walls of the shell body, so that the elastic pieces are transversely adjusted on the side walls.

The utility model according to the above scheme is characterized in that the shell cover is provided with a plurality of rectangular holes.

Preferably, the shell cover is provided with two rectangular holes, and the two rectangular holes are located in the middle of the shell cover and form convection air ports with the heat dissipation ports.

The utility model according to the above scheme is characterized in that the sliding part comprises a sliding rail and a sliding block, two ends of the sliding rail are connected to the front side wall and the rear side wall of the shell body, the sliding block is connected with the sliding rail in a sliding mode, and the sliding block is fixedly connected with the elastic part.

Furthermore, the sliding part comprises two sliding rails which are arranged in parallel, the sliding rails are provided with a plurality of sliding blocks, the sliding blocks on the sliding rails correspond to one another, and the corresponding two sliding blocks are connected with the same elastic part.

Further, the elastic element is perpendicular to the sliding rail.

The present invention according to the above aspect is characterized in that the elastic member is a wavy elastic strip, and an elastic portion of the wavy elastic strip faces the inside of the case body.

The utility model according to the above scheme is characterized in that the distance between two adjacent elastic pieces is 0.5-1 cm.

The utility model according to the above scheme is characterized in that the front and rear side walls of the housing body are provided with limiting posts, and when the sliding block of the sliding member slides to the front and rear side walls, the limiting posts contact the sliding block.

The utility model according to the scheme is characterized in that a plurality of rows of air holes are formed in the front side wall and the rear side wall of the shell body.

The utility model according to the above scheme is characterized in that the bottom plate of the shell body comprises a first bottom plate located below the left elastic buffer assembly and a second bottom plate located below the right elastic buffer assembly, and the heat dissipation port is formed by the distance between the first bottom plate and the second bottom plate.

On the other hand, the utility model also provides a lithium ion battery, which comprises a battery cell and is characterized by also comprising the battery cell shell, wherein the battery cell is arranged in the battery cell shell and is contacted with the elastic buffer components at two sides of the battery cell shell.

The utility model according to the scheme has the advantages that:

the battery cell shell protects the internal battery cell through the elastic buffer component on the side wall, when the battery cell expands, the elastic buffer component is extruded, the elastic buffer component deforms to provide an expansion space for the battery cell, and the shell is prevented from being directly extruded to burst; the elastic buffer part can be transversely adjusted to match with the structure of the battery cell, so that the battery cell is fully contacted with the elastic buffer part, and effective buffer protection is provided for the battery cell; the shell body bottom plate of the battery cell shell is provided with the heat dissipation port, so that partial heat generated when the battery cell works can be dissipated, the working environment temperature of the battery cell can be improved, and the expansion degree of the battery cell can be reduced;

the lithium ion battery is provided with the shell with the elastic buffering function, so that the risk of explosion caused by expansion of the internal battery core is avoided, and the use safety of the lithium ion battery product is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the present invention with the cover removed;

FIG. 3 is a schematic diagram of a partially exploded structure of the present invention;

FIG. 4 is a bottom view of the present invention.

In the figure, 1, a shell body; 11. a heat dissipation port; 12. a first base plate; 13. a second base plate; 14. air holes are formed; 15. a limiting column; 2. a shell cover; 21. a rectangular hole; 3. an elastic buffer component; 31. a slide rail; 32. a slider; 33. a wavy elastic strip.

Detailed Description

For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. Meanwhile, the following described examples are only for explaining the present invention, and are not intended to limit the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and should not be construed as limiting the technical solution.

The meaning of "a number" is two or more unless specifically defined otherwise. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features.

As shown in fig. 1 to 4, an electrical core casing includes a casing body 1 with an opening at the top and a detachable casing cover 2, the left and right side walls of the casing body 1 are provided with elastic buffer assemblies 3, each elastic buffer assembly 3 includes an elastic member and a sliding member, the elastic member is connected with the sliding member, the sliding member moves laterally on the side wall of the casing body 1, so that the elastic member can be laterally adjusted on the side wall, and a bottom plate of the casing body 1 is provided with a rectangular heat dissipation opening 11.

When the battery core of the battery is placed in the battery core shell, the left side and the right side of the battery core are in contact connection with the elastic buffer parts, if the battery core expands, the elastic buffer parts are extruded, the elastic buffer parts deform to provide an expansion space for the battery core, and the shell is prevented from being directly extruded to burst; the shell body bottom plate is provided with the heat dissipation port, so that partial heat of the battery cell can be dissipated, the working environment temperature of the battery cell can be improved, and the expansion degree of the battery cell can be reduced; the elastic buffer part can adjust the position to match the structure of the battery cell, so that the battery cell is fully contacted with the elastic buffer part, and effective buffer protection is provided for the battery cell.

In this embodiment, be equipped with two rectangular hole 21 on the cap 2, and two rectangular hole 21 are located the middle part of cap 2, form the convection current gas port with thermovent 11 to promote the thermal speed of effluvium electric core, avoid the heat to accumulate in electric core casing is inside, cause inside rapid heating up and increase the inflation degree.

In this embodiment, the sliding member includes a sliding rail 31 and a sliding block 32, two ends of the sliding rail 31 are connected to the front and rear side walls of the housing 1, the sliding block 32 is connected to the sliding rail 31 in a sliding manner, and the sliding block 32 is fixedly connected to the elastic member, so that the elastic member can slide on the sliding rail 31, and the adjustable function of the elastic member is realized. The sliding part comprises two sliding rails 31 which are arranged in parallel up and down, each sliding rail 31 is provided with a plurality of sliding blocks 32, the number and the positions of the sliding blocks 32 on different sliding rails 31 correspond to each other one by one, and the two corresponding sliding blocks 32 are connected with and control the same elastic part. In this embodiment, the elastic members are perpendicular to the slide rail 31, and this structure maximizes the effective adjustment distance of each elastic member, thereby better satisfying the adjustment requirement.

In the present embodiment, the elastic member is a wavy elastic strip 33, and an elastic portion of the wavy elastic strip 33 faces the inside of the casing body 1, i.e., is in contact with the internal battery cell. Wavy elastic strip 33 is integrated into one piece's aluminium strip or copper bar or other metal strips that coefficient of heat dissipation is high, and this wavy elastic strip 33 simple manufacture has greatly reduced the cost of manufacture of elastic buffer subassembly 3, and long service life.

In this embodiment, the distance between two adjacent elastic members is 0.5-1 cm, so that a certain deformation space is reserved for each elastic member, the expansion deformation of the battery cell is effectively buffered, a heat dissipation space is reserved for the battery cell, the temperature of the working environment is reduced, and the risk of expansion is reduced.

In this embodiment, the front and rear side walls of the housing body 1 are provided with the position-limiting posts 15, and when the slider 32 of the slider slides to the front and rear side walls, the position-limiting posts 15 contact the slider 32. The limiting column 15 is used for abutting against the sliding block 32 and preventing the sliding block 32 from colliding with the side wall of the shell body 1, so that the elastic piece is prevented from colliding with the side wall and being damaged.

In this embodiment, a plurality of rows of air holes 14 are formed in the front side wall and the rear side wall of the case body 1, and the air holes 14 can radiate heat of the battery cell from the side direction, so as to further improve the internal ambient temperature of the battery cell case, and enable the lithium ion battery to be in a safe and stable working state.

In this embodiment, the bottom plate of the casing 1 includes a first bottom plate 12 located below the left elastic buffer component 3 and a second bottom plate 13 located below the right elastic buffer component 3, and the distance between the first bottom plate 12 and the second bottom plate 13 forms the heat dissipation opening 11, so that the bottom of the battery cell casing has a larger heat dissipation opening 11, but the caliber of the heat dissipation opening 11 is smaller than the width dimension of the battery cell, that is, when the battery cell is placed into the battery cell casing, the bottom of the battery cell can be supported by the first bottom plate 12 and the second bottom plate 13, and the battery cell is prevented from dropping.

On the other hand, the utility model also provides a lithium ion battery, which comprises a battery cell and the battery cell shell of the scheme, wherein the battery cell is arranged in the battery cell shell and is contacted with the elastic buffer assemblies 3 on two sides of the battery cell shell. The lithium ion battery provided by the utility model has the advantages that the battery cell shell with the elastic buffering function is configured, so that the risk of explosion caused by expansion of the internal battery cell is avoided, and the use safety of the lithium ion battery product is greatly improved.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The battery cell shell comprises a shell body with an opening at the top and a detachable shell cover, and is characterized in that elastic buffering assemblies are arranged on the left side wall and the right side wall of the shell body and comprise elastic pieces and sliding pieces, the elastic pieces are connected with the sliding pieces, and the sliding pieces transversely move on the side walls of the shell body, so that the elastic pieces are transversely adjusted on the side walls.

2. The cell casing of claim 1, wherein the casing cover has rectangular holes.

3. The cell casing according to claim 1, wherein the sliding member includes a sliding rail and a sliding block, two ends of the sliding rail are connected to the front and rear side walls of the casing body, the sliding block is slidably connected to the sliding rail, and the sliding block is fixedly connected to the elastic member.

4. The cell casing according to claim 3, wherein the sliding member includes two parallel sliding rails, the sliding rails are provided with a plurality of sliding blocks, the sliding blocks on the two sliding rails are in one-to-one correspondence, and the two corresponding sliding blocks are connected to the same elastic member.

5. The cell casing according to claim 1, wherein the elastic member is a wave-shaped elastic strip, and an elastic portion of the wave-shaped elastic strip faces the inside of the casing body.

6. The cell casing of claim 1, wherein the distance between two adjacent elastic members is 0.5-1 cm.

7. The cell casing according to claim 1, wherein the front and rear side walls of the casing body are provided with a limiting post, and when the sliding block of the sliding member slides to the front and rear side walls, the limiting post contacts the sliding block.

8. The cell casing of claim 1, wherein the front and rear sidewalls of the casing body are provided with a plurality of rows of ventilation holes.

9. The cell casing of claim 1, wherein the bottom plate of the casing body comprises a first bottom plate located below the left elastic buffer assembly and a second bottom plate located below the right elastic buffer assembly, and a space between the first bottom plate and the second bottom plate forms a heat dissipation opening.

10. A lithium ion battery comprising a cell and characterized by further comprising the cell casing of any of claims 1-9, wherein the cell is disposed in the cell casing and is in contact with elastic buffer assemblies disposed on both sides of the cell casing.