CN218919067U

CN218919067U - Edge sealing structure of battery cell heat insulation sheet

Info

Publication number: CN218919067U
Application number: CN202320122978.XU
Authority: CN
Inventors: 沈小飞; 黄周强
Original assignee: Xiamen Jiazhi Technology Co ltd
Current assignee: Xiamen Jiazhi Technology Co ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-04-25
Anticipated expiration: 2033-01-13

Abstract

The utility model discloses an edge sealing structure of a battery cell heat insulation sheet, which comprises two short edge sealing strips and two long edge sealing strips, wherein the two short edge sealing strips are respectively wrapped on the upper side and the lower side of a heat insulation sheet main body, the two long edge sealing strips are respectively wrapped on the left side and the right side of the heat insulation sheet main body, the heat insulation sheet main body is positioned between two battery cells, the inner sides of the short edge sealing strips and the long edge sealing strips are respectively provided with a heat insulation sheet clamping groove, and the front end and the rear end of the outer side of the long edge sealing strips are respectively provided with a battery cell clamping groove. The utility model has the beneficial effects that: edge sealing strips are arranged on four sides, and the four sides of the heat insulation sheet main body are inserted into the edge sealing strips, so that warping is avoided; the middle area forms a hollow area which can be used for releasing the expansion deformation of the discharge core; the long edge sealing strip is provided with a battery cell clamping groove, so that the battery cell limiting function can be achieved.

Description

Edge sealing structure of battery cell heat insulation sheet

Technical Field

The utility model relates to an edge sealing structure of a battery cell heat-insulating sheet, and belongs to the technical field of battery cell heat-insulating sheets.

Background

The service environment of the lithium ion battery cell product directly influences the service performance and service life of the lithium ion battery module, a large amount of heat can be generated in the working process of the lithium ion battery cell and in extreme working states such as short circuit, and therefore thermal runaway occurs, and the diffusion of the thermal runaway of the lithium ion battery cell can influence the normal use of other lithium ion battery cells and the whole lithium ion battery module.

In order to solve the above problems, heat insulation sheets are required to be arranged between adjacent electric cores, and when one electric core fails and heats, the normal operation of other electric cores cannot be influenced due to the arrangement of the heat insulation sheets.

The utility model discloses a fire prevention aerogel heat insulating mattress that uses in the new forms of energy module as the publication No. CN217903244U, this heat insulating mattress is through the upper and lower surface of aerogel layer coincide respectively fixed setting up upper mica layer and lower mica layer, the cooperation is embedded into the holding tank of framework with the core, this kind of structure can effectively increase the intensity of heat insulating mattress, effectively improve shock resistance, the life of heat insulating mattress is prolonged greatly, when the electric core is taking place thermal runaway, can prevent flame shock effectively, compare independent aerogel layer structure, the fire resistance impact ability of this utility model has improved more than 3 times, the security performance of new forms of energy module is promoted greatly, satisfy current demand.

The aerogel layer is fixed through the upper mica layer and the lower mica layer to the heat insulation pad, the battery cell can expand and deform in the charging and discharging process, and the heat insulation pad can not well release the deformation.

However, the heat insulation pad does not carry out edge sealing treatment on four sides, and the four sides are easy to warp, so that the normal use of the heat insulation pad is affected.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an edge sealing structure of an electric core heat-insulating sheet, wherein edge sealing strips are arranged on four sides of the edge sealing structure of the heat-insulating sheet, four sides of a main body of the heat-insulating sheet are inserted into the edge sealing strips to avoid warping, a hollow area is formed in the middle area and can be used for expanding and deforming a discharge core, and meanwhile, an electric core clamping groove is formed in the long edge sealing strip and can play a role of limiting the electric core.

The utility model is realized by the following scheme: the utility model provides an electric core heat insulating sheet banding structure, it includes short banding strip and long banding strip, short banding strip is equipped with two, wraps up respectively in the upper and lower both sides of heat insulating sheet main part, long banding strip is equipped with two, wraps up respectively in the left and right sides of heat insulating sheet main part, the heat insulating sheet main part is located between two electric cores, short banding strip with the inboard of long banding strip all is equipped with the heat insulating sheet draw-in groove, both ends respectively are equipped with an electric core draw-in groove around the long banding strip outside.

The upper and lower sides of the heat-insulating sheet main body are respectively inserted into the heat-insulating sheet clamping grooves of the two short edge sealing strips.

The left and right sides of the heat-insulating sheet main body are respectively inserted into the heat-insulating sheet clamping grooves of the two long edge sealing strips.

The front end and the rear end of the outer side of the long edge sealing strip are respectively connected with a clamping block.

The inner side of the clamping block is provided with the electric core clamping groove.

The edge of the battery cell is of an arc structure, and the arc structure is clamped in the battery cell clamping groove.

The clamping block is clamped at the outer side of the battery cell.

The beneficial effects of the utility model are as follows:

1. according to the battery cell heat-insulating sheet edge sealing structure, edge sealing strips are arranged on four sides, and four sides of a heat-insulating sheet main body are inserted into the edge sealing strips, so that warping is avoided;

2. the middle area of the edge sealing structure of the battery cell heat insulation sheet forms a hollow area, and can be used for releasing the expansion deformation of the battery cell;

3. the long edge sealing strip of the edge sealing structure of the battery cell heat insulating sheet is provided with the battery cell clamping groove, so that the battery cell is limited.

Drawings

Fig. 1 is a schematic top sectional view of the edge sealing structure of the battery cell heat insulation sheet of the present utility model.

Fig. 2 is a schematic front view of the edge sealing structure of the battery cell heat insulation sheet of the present utility model.

Fig. 3 is a schematic structural view of the edge sealing structure of the battery cell heat-insulating sheet in the unfolded state.

In the figure: 1 is a short edge banding, 2 is a long edge banding, 3 is a heat insulation sheet main body, 4 is a battery cell, 5 is a heat insulation sheet clamping groove, 6 is a battery cell clamping groove, and 7 is a clamping block.

Detailed Description

The utility model is further described in connection with fig. 1-3, but the scope of the utility model is not limited to this.

Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, the words "inner" and "outer" refer to directions toward or away from a geometric center of a particular component, respectively, and the drawings are in a very simplified form and all use non-precise ratios for convenience and clarity only to aid in explaining embodiments of the present utility model.

In the following description, well-known functions and constructions are not described in detail for clarity of understanding, since they would obscure the utility model with unnecessary detail, it is to be understood that in the development of any actual embodiment, numerous implementation details must be made to achieve the developer's specific goals, such as compliance with system-related or business-related constraints, that will vary from one embodiment to another, and that will be appreciated that such a development effort may be complex and time-consuming, but will be merely routine for one of ordinary skill in the art.

The battery cell heat-insulating sheet edge sealing structure comprises a short edge sealing strip 1 and a long edge sealing strip 2, wherein the two short edge sealing strips 1 are respectively wrapped on the upper side and the lower side of a heat-insulating sheet main body 3, and the upper side and the lower side of the heat-insulating sheet main body 3 are respectively inserted into heat-insulating sheet clamping grooves 5 of the two short edge sealing strips 1; the long edge sealing strips 2 are arranged in two, are respectively wrapped on the left side and the right side of the heat insulation sheet main body 3, and are respectively inserted into the heat insulation sheet clamping grooves 5 of the two long edge sealing strips 2, so that the short edge sealing strips 1 and the long edge sealing strips 2 can effectively avoid warping of the heat insulation sheet.

The heat insulation sheet main body 3 is made of silicon aerogel, the local thermal excitation propagation is effectively limited by a fine nano network structure of the silicon aerogel, the solid thermal conductivity of the heat insulation sheet main body is 2-3 orders of magnitude lower than that of a corresponding glassy material, the contribution of gas molecules to heat conduction is restrained by nano micropore holes, the refractive index of the silicon aerogel is close to l, and the thermal conductivity of the carbon-doped aerogel at normal temperature and normal pressure can be as low as 0.013 w/m.K.

The front end and the rear end of the outer side of the long edge sealing strip 2 are respectively connected with a clamping block 7, the inner side of the clamping block 7 is provided with a battery cell clamping groove 6, and the clamping block 7 is clamped on the outer side of the battery cell 4.

The heat insulating sheet main body 3 is located between two electric cores 4, and the inboard of short banding strip 1 and long banding strip 2 all is equipped with heat insulating sheet draw-in groove 5, and both ends respectively are equipped with electric core draw-in groove 6 around the long banding strip 2 outside, and the edge of electric core 4 is the arc structure, and the structure of electric core draw-in groove 6 corresponds with the edge arc structure of electric core 4 for electric core 4 can block in electric core draw-in groove 6, and electric core draw-in groove 6 can play the effect of spacing electric core.

While the utility model has been described and illustrated in considerable detail, it should be understood that modifications and equivalents to the above-described embodiments will become apparent to those skilled in the art, and that such modifications and improvements may be made without departing from the spirit of the utility model.

Claims

1. Electric core heat insulating sheet banding structure, its characterized in that: the heat insulation sheet comprises a short edge sealing strip (1) and a long edge sealing strip (2), wherein the short edge sealing strip (1) is provided with two heat insulation sheet clamping grooves (5) which are respectively wrapped on the upper side and the lower side of a heat insulation sheet main body (3), the long edge sealing strip (2) is provided with two heat insulation sheet main bodies, the heat insulation sheet main bodies (3) are respectively wrapped on the left side and the right side of the heat insulation sheet main body (3), the heat insulation sheet main bodies (3) are located between two electric cores (4), the short edge sealing strip (1) and the inner side of the long edge sealing strip (2) are respectively provided with the heat insulation sheet clamping grooves (6), and the front end and the rear end of the outer side of the long edge sealing strip (2) are respectively provided with one electric core clamping groove (6).

2. The cell heat shield edge sealing structure of claim 1, wherein: the upper and lower sides of the heat-insulating sheet main body (3) are respectively inserted into the heat-insulating sheet clamping grooves (5) of the two short edge sealing strips (1).

3. The cell heat shield edge sealing structure of claim 1, wherein: the left and right sides of the heat-insulating sheet main body (3) are respectively inserted into the heat-insulating sheet clamping grooves (5) of the two long edge sealing strips (2).

4. The cell heat shield edge sealing structure of claim 1, wherein: the front end and the rear end of the outer side of the long edge sealing strip (2) are respectively connected with a clamping block (7).

5. The cell heat shield edge banding structure according to claim 4, wherein: the inner side of the clamping block (7) is provided with the battery cell clamping groove (6).

6. The cell heat shield edge banding structure according to claim 5, wherein: the edge of the battery cell (4) is of an arc structure, and the arc structure is clamped in the battery cell clamping groove (6).

7. The cell heat shield edge banding structure according to claim 4, wherein: the clamping block (7) is clamped at the outer side of the battery cell (4).