CN218939823U

CN218939823U - Heat insulation film structure used between electric cores

Info

Publication number: CN218939823U
Application number: CN202223455852.9U
Authority: CN
Inventors: 萧玲; 肖嘉乐
Original assignee: Jiangxi Zhongmao New Energy Material Technology Co ltd
Current assignee: Jiangxi Zhongmao New Energy Material Technology Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-04-28
Anticipated expiration: 2032-12-23

Abstract

The utility model discloses a heat insulation film structure used between electric cores, which comprises an electric core body, wherein a second buffer layer is arranged on one side of the electric core body, foam is arranged at the other end of the second buffer layer, a first buffer layer is arranged at the other end of the foam, the electric core body is also arranged at the other end of the first buffer layer, a heat insulation layer is arranged in the foam, the first buffer layer and the second buffer layer are square frame structures, the heat insulation layer is arranged in the foam, the heat insulation pad can obstruct heat transfer between the electric cores, the foam has compression elastic energy, and can absorb electric core tolerance and expansion force in the circulation process of the electric core module in the assembly process of the electric core module, so that the heat insulation effect between the whole electric cores is improved.

Description

Heat insulation film structure used between electric cores

Technical Field

The utility model relates to the technical field of batteries, in particular to a heat insulation film structure used between electric cores.

Background

The electric automobile is a trend of future development of the automobile industry, wherein the power lithium battery module is one of three major core technologies of the electric automobile; however, in the use process of the existing power lithium battery module, the battery module has great potential safety hazard of thermal runaway and ignition, and seriously threatens the life safety of passengers;

at present, some module products in new energy enterprises are not insulated, but some module products are insulated by aerogel, but the self temperature resistance of the aerogel is only about 500 ℃, which is far less than the temperature of about 1000 ℃ when the battery is in fire explosion, and the outside of the aerogel is also packaged by PI film or glass fiber cloth.

Disclosure of Invention

The utility model aims to provide a heat insulation film structure used between electric cores, and in order to achieve the purposes, the heat insulation film structure used between the electric cores adopts the following technical scheme that the heat insulation film structure comprises an electric core body, wherein one side of the electric core body is provided with a second buffer layer, the other end of the second buffer layer is provided with foam, the other end of the foam is provided with a first buffer layer, and the other end of the first buffer layer is also provided with an electric core body;

the inside of bubble cotton is provided with the insulating layer, first buffer layer and second buffer layer are square frame structure.

As a further description of the above technical solution: one end of the foam is provided with a first mica layer, the other end of the foam is provided with a second mica layer, and the size and shape of the first mica layer are consistent with those of the second mica layer

As a further description of the above technical solution: the first mica layer and the second mica layer are in contact with the first buffer layer and the second buffer layer.

As a further description of the above technical solution: the outside of electricity core body is provided with the installation shell, and the inboard of installation shell sets up with electric core body laminating.

The utility model has the following beneficial effects:

compared with the prior art, the heat insulation film structure for the battery cells has the advantages that the heat insulation layer is arranged in the foam, the heat insulation pad can obstruct heat transfer between the battery cells, the foam has compression retraction elastic energy, and the tolerance of the battery cells in the battery cell assembly process and the expansion force in the battery cell assembly cycle process can be absorbed, so that the heat insulation effect between the whole battery cells is improved;

compared with the prior art, when the heat insulation structure is used for assembling the battery pack, the heat insulation film structure between the battery cells can enable the foam and the two buffer pieces to jointly provide pretightening force for the battery cells, so that the installation effect is ensured, and the sufficient expansion space of the battery cells can be reserved due to the compressibility of the foam and the two buffer pieces.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further illustrated by the following figures and examples;

FIG. 1 is a schematic view of the overall structure of a heat insulating film structure for use between cells according to the present utility model;

FIG. 2 is an exploded view of a thermal isolation assembly for an inter-cell thermal isolation membrane structure according to the present utility model;

FIG. 3 is a schematic view of a foam structure for an insulating film structure between cells according to the present utility model;

fig. 4 is a perspective view of a thermal insulation film structure for use between cells according to the present utility model.

In the figure: 1. a cell body; 2. soaking cotton; 3. a first buffer layer; 4. a first mica layer; 5. a second mica layer; 6. a second buffer layer; 7. a mounting shell; 8. and a heat insulation layer.

Detailed Description

The utility model is further described in connection with fig. 1-2, 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.

Referring to fig. 1-4, one embodiment provided by the present utility model is: the utility model provides a thermal-insulated membrane structure for between electric core, including electric core body 1, one side of electric core body 1 is provided with second buffer layer 6, the other end of second buffer layer 6 is provided with bubble cotton 2, the other end of bubble cotton 2 is provided with first buffer layer 3, the other end of first buffer layer 3 is provided with electric core body 1 equally, the material of first buffer layer 3 and second buffer layer 6 includes but is not limited to silica gel, ceramic silica gel, MPP or aerogel strip etc. when thermal-insulated structure uses in the equipment of group battery, can make bubble cotton 2, first buffer layer 3 and second buffer layer 6 provide the pretightning force jointly to electric core body 1, so as to guarantee the installation effect, and the compressibility of bubble cotton 2 and two buffers can reserve sufficient electric core body 1 inflation space;

the inside of the foam 2 is provided with a heat insulation layer 8, the first buffer layer 3 and the second buffer layer 6 are both square frame structures, and the heat insulation layer 8 is made of materials including but not limited to ceramic fiber aerogel, glass fiber aerogel or pre-oxidized fiber aerogel and the like, so that heat generated between two electric cores is insulated;

the first mica layer 4 is arranged at one end of the foam 2, the second mica layer 5 is arranged at the other end of the foam 2, the first mica layer 4 and the second mica layer 5 are identical in size and shape, the first mica layer 4 and the second mica layer 5 are in contact with the first buffer layer 3 and the second buffer layer 6, the heat insulation layer 8 can separate heat transfer between the two cell bodies 1, the foam 2 has compression retraction elastic energy, and can absorb cell tolerance and expansion force in the cell module circulation process in the cell body 1 composition process, and due to poor heat resistance of the foam 2, the first mica layer 4 and the second mica layer 5 are arranged at two ends of the foam 2, the mica sheet has low heat conductivity coefficient and heat insulation effect, so that the cell body 1 can be effectively isolated from transferring heat to the foam 2, and the service life of the foam 2 is prolonged;

the outside of electric core body 1 is provided with installation shell 7, and the inboard of installation shell 7 and electric core body 1 laminating set up, when carrying out electric core body 1 module installation, with electric core body 1 according to the order install can, can be convenient for the staff install electric core body 1 in equipment.

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. The utility model provides a thermal-insulated membrane structure for between electric core, includes electric core body (1), its characterized in that: a second buffer layer (6) is arranged on one side of the battery cell body (1), foam (2) is arranged at the other end of the second buffer layer (6), a first buffer layer (3) is arranged at the other end of the foam (2), and the battery cell body (1) is also arranged at the other end of the first buffer layer (3);

the inside of bubble cotton (2) is provided with insulating layer (8), first buffer layer (3) and second buffer layer (6) are square frame structure.

2. The heat insulation film structure for battery cells according to claim 1, wherein one end of the foam (2) is provided with a first mica layer (4), the other end of the foam (2) is provided with a second mica layer (5), and the first mica layer (4) is consistent with the second mica layer (5) in size and shape.

3. A thermal insulation film structure for use between electric cells according to claim 2, wherein the first mica layer (4), the second mica layer (5) are in contact with the first buffer layer (3) and the second buffer layer (6).

4. The heat insulation film structure for battery cells according to claim 1, wherein a mounting shell (7) is arranged on the outer side of the battery cell body (1), and the inner side of the mounting shell (7) is attached to the battery cell body (1).