CN216958312U - Buffer heat insulation structure between battery cores and battery core module - Google Patents

Abstract

The utility model relates to the technical field of power battery accessories, in particular to an inter-cell buffering and heat-insulating structure and a cell module, wherein the inter-cell buffering and heat-insulating structure is arranged between two adjacent cells and comprises foam cotton, a heat-insulating pad and a mica sheet, the foam cotton is provided with a containing hole, the heat-insulating pad is contained in the containing hole, and the mica sheet is arranged on one side of the foam cotton facing the cells. According to the utility model, the containing hole is formed in the foam, the heat insulation pad is contained in the containing hole, the heat insulation pad can block heat transfer between the battery cell and the battery cell, the foam has compression resilience performance, can absorb the tolerance of the battery cell in the grouping process of the battery cell modules and the expansion force in the circulation process of the battery cell modules, the heat resistance of the foam is poorer, the mica sheet is arranged on one side of the foam facing the battery cell, the heat conductivity coefficient of the mica sheet is low, the heat insulation effect is achieved, the heat transfer of the battery cell to the foam is effectively isolated, and the service life of the foam is prolonged.

Description

A buffer and heat insulation structure between cells and a cell module

technical field

The utility model relates to the technical field of power battery spare parts, in particular to a buffer and heat insulation structure between battery cells and a battery core module.

Background technique

Power batteries have the characteristics of small size, light weight and large capacity, and have been widely used in mobile devices. In the process of making modules into groups of cells, aerogel insulation pads will be prevented between the cells and the cells to prevent thermal runaway, but aerogels only have the function of heat insulation and cannot buffer and absorb cell tolerances, nor can they absorb molds. Group expansion force, there is a safety hazard.

Utility model content

The purpose of the utility model is to provide a buffer and heat insulation structure between cells, which has both buffer and heat insulation functions and improves safety.

For this purpose, the utility model adopts the following technical solutions:

A buffer and heat insulation structure between cells is arranged between two adjacent cells, comprising:

foam, the foam is provided with accommodating holes,

a thermal insulation pad, the thermal insulation pad is accommodated in the accommodating hole;

The mica sheet is arranged on the side of the foam facing the battery core.

Preferably, the foam, the thermal insulation pad, and the mica sheet are packaged and molded.

Preferably, the mica sheet is bonded to the foam.

Preferably, the mica sheet includes a first mica sheet and a second mica sheet, the foam has a first surface facing one of the battery cells, and a second surface facing the other battery core, the first A mica sheet is bonded to the first side, and the second mica sheet is bonded to the second side.

Preferably, the first mica sheet is provided with a first through hole, and the first through hole corresponds to the accommodating hole.

Preferably, the second mica sheet is provided with a second through hole, and the second through hole corresponds to the accommodating hole.

Preferably, the accommodating hole, the first through hole and the second through hole are all square holes.

Preferably, the thickness of the heat insulating pad is equal to the thickness of the foam.

Preferably, the thermal insulation pad is an aerogel.

Another object of the present invention is to provide a cell module, in which the above-mentioned buffer and heat insulation structure between cells is placed between two adjacent cells.

The beneficial effects of the present utility model:

In the utility model, an accommodating hole is opened on the foam, and the heat-insulating pad is accommodated in the accommodating hole. The heat-insulating pad can block the heat transfer between the electric core and the electric core. In the process of forming the cell module, the cell tolerance and the expansion force during the cell module cycle process, the heat resistance of the foam is poor, and the mica sheet is arranged on the side of the foam towards the cell. The mica sheet has a low thermal conductivity and has a good barrier The heat effect effectively isolates the heat of the cell from transferring to the foam and prolongs the service life of the foam.

The utility model also provides a battery core module. The above-mentioned buffer and heat insulation structure between the battery cores is arranged between two adjacent battery cores, which has both the functions of buffering and heat insulation, and improves the performance of the battery core module. safety.

Description of drawings

FIG. 1 is an exploded view of the buffer and heat insulation structure between cells provided by the present invention.

In the picture:

100, battery;

1. Foam;

2. Insulation pad;

3. Mica sheet; 31. The first mica sheet; 32. The second mica sheet.

Detailed ways

The technical solutions of the present utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the accompanying drawings only show the part related to the present invention, but not the whole.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Power batteries have the characteristics of small size, light weight and large capacity, and have been widely used in mobile devices. In the process of making modules into groups of cells, aerogel insulation pads will be prevented between the cells and the cells to prevent thermal runaway, but aerogels only have the function of heat insulation and cannot buffer and absorb cell tolerances, nor can they absorb molds. Group expansion force, there is a safety hazard.

In order to solve the above problems, the present embodiment provides a buffer and heat insulation structure between cells, as shown in FIG. The thermal insulation pad 2 and the mica sheet 3, wherein the foam 1 is provided with an accommodating hole, and the thermal insulation pad 2 is accommodated in the accommodating hole. Specifically, in this embodiment, the thickness of the thermal insulation pad 2 is equal to the thickness of the foam 1 , so that after the insulating pad 2 is accommodated in the accommodating hole, the surface of the insulating pad 2 is flush with the surface of the foam 1 . The mica sheet 3 is disposed on the side of the foam 1 facing the cell 100 .

In this embodiment, the insulating pad 2 is accommodated in the accommodating hole by opening an accommodating hole on the foam 1. The insulating pad 2 can block the heat transfer between the cell 100 and the cell 100. The foam 1 has compression The resilience performance can absorb the cell tolerance in the process of forming the cell module and the expansion force in the cycle process of the cell module. 3. The mica sheet 3 has a low thermal conductivity and has a heat insulating effect, which effectively isolates the heat from the cell 100 to the foam 1 and prolongs the service life of the foam 1 .

Further, after the mica sheet 3 is bonded to the foam 1, the foam 1, the heat insulating pad 2 and the mica sheet 3 are packaged and molded, so that they can be directly placed in the middle of the battery core 100, and the operation is convenient.

Specifically, the mica sheet 3 includes a first mica sheet 31 and a second mica sheet 32 . The first mica sheet 31 is bonded to the side of the foam 1 facing the cell 100 , and the foam 1 has a first mica sheet facing one cell 100 . The first mica sheet 31 is bonded to the first face, and the second mica sheet 32 is bonded to the second face. More specifically, the first mica sheet 31 is provided with a first through hole corresponding to the accommodating hole, and the second mica sheet 32 is provided with a second through hole corresponding to the accommodating hole.

More specifically, in this embodiment, the accommodating hole, the first through hole and the second through hole are all square holes, and the heat insulation pad 2 is also of a square structure. It should be noted that the heat insulation pad provided in this embodiment 2 is aerogel.

This embodiment also provides a cell module, in which the above-mentioned inter-cell buffer and heat insulation structure is placed between two adjacent cells 100, which has both buffering and heat insulation functions, and improves the performance of the cell module. security.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims (10)

1. The utility model provides a buffering thermal-insulated structure between electric core, sets up between two adjacent electric cores (100), its characterized in that includes:

the foam (1), the foam (1) is provided with a containing hole,

the heat insulation pad (2), the heat insulation pad (2) is accommodated in the accommodating hole;

the mica sheet (3), the mica sheet (3) set up in foam (1) orientation one side of electricity core (100).

2. The buffer heat insulation structure among the battery cells of claim 1, wherein the foam (1), the heat insulation pad (2) and the mica sheet (3) are packaged and molded.

3. The buffer heat insulation structure between battery cores according to claim 1, wherein the mica sheet (3) is bonded with the foam (1).

4. The buffer heat insulation structure between battery cells of claim 3, wherein the mica sheets (3) comprise a first mica sheet (31) and a second mica sheet (32), the foam (1) has a first surface facing one battery cell (100) and a second surface facing the other battery cell (100), the first mica sheet (31) is adhered to the first surface, and the second mica sheet (32) is adhered to the second surface.

5. The buffer heat insulation structure between battery cores of claim 4, wherein the first mica sheet (31) is provided with a first through hole, and the first through hole corresponds to the accommodating hole.

6. The buffer and thermal insulation structure between battery cores of claim 5, wherein a second through hole is formed on the second mica sheet (32), and the second through hole corresponds to the accommodating hole.

7. The buffer heat insulation structure among the battery cells of claim 6, wherein the accommodating hole, the first through hole and the second through hole are square holes.

8. The buffer heat insulation structure between battery cells as claimed in claim 1, wherein the thickness of the heat insulation pad (2) is equal to the thickness of the foam (1).

9. The buffer heat insulation structure between the battery cores according to claim 1, wherein the heat insulation pad (2) is aerogel.

10. A battery cell module, characterized in that the buffer thermal insulation structure between battery cells according to any one of claims 1 to 9 is disposed between two adjacent battery cells (100).

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