CN213692193U

CN213692193U - Square battery module side heating structure suitable for ribbon is fixed

Info

Publication number: CN213692193U
Application number: CN202022666573.1U
Authority: CN
Inventors: 宋俊阳; 黄文雪; 廖立; 李文学; 黄骏
Original assignee: Gotion High Tech Co Ltd
Current assignee: Anhui Zhitong New Energy Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-13
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a square battery module side heating structure suitable for ribbon is fixed, including PI membrane, epoxy board and CR bubble cotton, the PI membrane bonds on the side of square battery module, and its ratio of height and module height is 0.5-1: 1; the epoxy plates comprise a first epoxy plate compounded on the top edge and the bottom edge of the outer side surface of the PI film and a second epoxy plate compounded on the two side edges of the outer side surface of the PI film; the CR foam is compounded on the outer side surface of the PI film and is arranged between the two epoxy plates in parallel, the position of the CR foam on the outer side surface of the PI film corresponds to the position of the rectangular battery module bound by the binding belt, and the CR foam is adhered to the binding belt. The utility model discloses compound epoxy board all around at the PI membrane to play the fixed action to the PI membrane, reduce because of the probability that corrugate appears in the PI membrane that electric core expend with heat and contract with cold arouses in the use.

Description

Square battery module side heating structure suitable for ribbon is fixed

Technical Field

The utility model belongs to the technical field of the battery module, concretely relates to square battery module side heating structure suitable for ribbon is fixed.

Background

In recent years, electric vehicles have been widely used, the safety, stability and driving range of battery vehicles have gradually become the focus of attention, and the quality of the square power battery as a core device of the electric vehicle directly affects the safety, driving range and the like of the battery vehicle. In the design process of a battery system, in order to improve the energy density of the system, a square large battery cell is favored by more and more manufacturers, because after the battery cell becomes large, the corresponding weight proportion of components such as a battery shell on the battery cell is reduced.

However, the application of square big electric core for the module height increases, causes the space on the battery package direction of height to reduce, so that electric core heating device can only arrange in the module side, to the fixed battery module of ribbon, because lack mechanical fastening structure, the PI membrane heating device that heating device generally selects the quality to be lighter, because PI membrane and electric core only adopt the fixed mode that 3M glue was pasted, in the battery recycling process, wrinkling, the drop of PI membrane appear easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a square battery module side heating structure suitable for the ribbon is fixed to overcome above-mentioned technical problem.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a square battery module side heating structure suitable for ribbon is fixed, includes:

the PI film is bonded on the side face of the square battery module, and the ratio of the height of the PI film to the height of the module is 0.5-1: 1;

the epoxy plate comprises a first epoxy plate compounded on the top edge and the bottom edge of the outer side surface of the PI film and a second epoxy plate compounded on the two side edges of the outer side surface of the PI film;

and the CR foam is compounded on the outer side surface of the PI film and is arranged between the two epoxy plates in parallel, the position of the CR foam on the outer side surface of the PI film corresponds to the position of the rectangular battery module bound by the binding belt, and the CR foam is adhered to the binding belt.

Further, the thickness of the PI film is 0.26 mm.

Further, the thickness of the first epoxy plate is 0.5-1mm, and the width of the first epoxy plate is 8-12 mm.

Further, the thickness of the second epoxy plate is 0.5-1mm, and the width of the second epoxy plate is 8-12 mm.

Further, the thickness of the CR foam is 1-3 mm.

Further, the compression amount of the binding belt after the CR foam is tightly pressed by the binding belt is less than 30%.

Further, the bottom of the second epoxy plate is flush with the bottom of the square battery module, and the top of the second epoxy plate is flush with the top of the PI film.

Has the advantages that:

the utility model compounds the epoxy board around the PI film to fix the PI film, thereby reducing the possibility of wrinkling of the PI film caused by thermal expansion and cold contraction of the cell during use;

in the utility model, the two epoxy plates on the two sides are flush with the bottom of the battery module, thereby saving the installation and positioning design of the heating structure; and the thickness of the foam is higher than that of the epoxy plate, so that the epoxy plate is not in contact with the ribbon, and the risk of damaging the PI film due to the fact that the ribbon extrudes the epoxy plate is avoided.

The utility model discloses compound CR bubble is cotton on the PI membrane, utilizes the ribbon to the cotton extrusion of CR bubble, strengthens the fixed to heating structure, reduces and only relies on the PI membrane to paste the risk that the PI membrane drops probably to appear with electric core.

Drawings

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

in the figure: 1. a PI film; 2. an epoxy board; 21. a first epoxy plate; 22. a second epoxy board; 3. CR foam; 4. a square battery module; 5. binding a belt; 6. the strand is heated.

Detailed Description

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or structure referred to must have a particular orientation and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in figure 1, a square battery module side heating structure suitable for ribbon is fixed, including PI membrane 1, epoxy board 2 and CR bubble cotton 3, the PI membrane docks with the heating source through heating pencil 6.

As shown in fig. 1, the PI film is bonded to two side surfaces of the square battery module, the thickness of the PI film is 0.26mm, and the ratio of the height of the PI film to the height of the square battery module is 0.5-1: the design aims at designing the area of the PI film according to the actual heating rate requirement, so that the cost of a heating structure can be reduced.

The PI film is fixed by the aid of four epoxy plates, and the probability of wrinkling of the PI film caused by expansion and contraction of the battery cell during use is reduced; the top edge of the first epoxy plate is flush with the top edge of the PI, the bottom edge of the second epoxy plate is flush with the bottom of the square battery module, and the top edge of the second epoxy plate is flush with the top edge of the PI film.

The first epoxy plate and the second epoxy plate are both of sheet structures, the thickness of the first epoxy plate is 0.5-1mm, the width of the first epoxy plate is 8-12mm, the thickness of the second epoxy plate is 0.5-1mm, the width of the second epoxy plate is 8-12mm, and the sizes of the first epoxy plate and the second epoxy plate are kept consistent, so that the first epoxy plate does not contact with the ribbon, and the risk that the PI film is damaged due to the fact that the ribbon extrudes the epoxy plates is avoided.

The CR foam is compounded on the outer side surface of the PI film and is arranged between the two first epoxy plates in parallel, the CR foam can be correspondingly arranged according to the number of the binding tapes, for example, two CR foam which are parallel to each other are arranged in figure 1, the CR foam is of a sheet structure, and the thickness of the CR foam is 1-3mm, so that the thickness of the CR foam is higher than that of the epoxy plates, the epoxy plates are not in contact with the binding tapes, and the risk that the PI film is damaged due to the fact that the binding tapes extrude the epoxy plates is avoided; the position that the ribbon was binded on position and the square battery module of CR bubble cotton on PI membrane lateral surface is corresponding, just CR bubble cotton with the ribbon adhesion, so through the extrusion of ribbon to CR bubble cotton, the ribbon compresses tightly the compression capacity behind the CR bubble cotton and is less than 30%, strengthens the fixed to heating structure from this, reduces and only relies on PI membrane and electric core to paste the risk that the PI membrane appears probably appearing droing.

In order to make the purpose, technical solution and advantages of the present invention more concise and clear, the present invention is described with the above embodiments, which are only used for describing the present invention, and can not be understood as a limitation to the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a square battery module side heating structure suitable for ribbon is fixed which characterized in that includes:

PI membrane (1), bond on the side of square battery module (4), its ratio of height and module height is 0.5-1: 1;

the epoxy plate (2) comprises a first epoxy plate (21) compounded on the top edge and the bottom edge of the outer side face of the PI film and a second epoxy plate (22) compounded on the two side edges of the outer side face of the PI film;

and the CR foam (3) is compounded on the outer side surface of the PI film and is arranged between the two epoxy plates in parallel, the position of the CR foam on the outer side surface of the PI film corresponds to the position of the square battery module bound by the binding belt (5), and the CR foam is adhered to the binding belt.

2. The square battery module side heating structure suitable for band-fastening as claimed in claim 1, wherein the thickness of the PI film is 0.26 mm.

3. The square battery module side heating structure suitable for band-fastening as claimed in claim 1, wherein the first epoxy plate has a thickness of 0.5-1mm and a width of 8-12 mm.

4. The square battery module side heating structure suitable for band-fastening as claimed in claim 1, wherein the thickness of the second epoxy plate is 0.5-1mm and the width is 8-12 mm.

5. The square battery module side heating structure suitable for band-fastening as claimed in claim 1, wherein the CR foam has a thickness of 1-3 mm.

6. The square battery module side heating structure suitable for band fixing according to claim 1, wherein the compression amount of the band after pressing the CR foam is less than 30%.

7. The square battery module side heating structure suitable for band-fastening is characterized in that the bottom of the second epoxy plate is flush with the bottom of the square battery module, and the top of the second epoxy plate is flush with the top of the PI film.