CN-224232714-U - Battery device and electric equipment

Abstract

The application relates to the technical field of batteries, and provides a battery device and electric equipment. The battery device comprises a box body, at least two battery monomers and a heat exchange assembly. The heat exchange assembly is arranged on the top sides of the at least two battery monomers, the heat exchange assembly comprises at least two heat exchange pieces, at least one heat exchange piece is arranged as a flexible piece, at least one heat exchange piece is arranged as a rigid piece, the flexible piece and the rigid piece are stacked to form a medium flow channel, the medium flow channel is used for conducting heat exchange media, and the heat exchange media are used for exchanging heat with the at least two battery monomers. Wherein, heat exchange assembly is integrated to the top cap. The heat exchange assembly is integrated to the top cover, and the heat exchange assembly is connected with the top cover or can be a part of the structure of the top cover, and the top cover can provide support for the heat exchange assembly, so that the overall structural strength and stability of the battery device are improved.

Inventors

• Zhu Duoduo
• Gao Bang
• Yuan Chuanzong

Assignees

• 宁德时代新能源科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250417

Claims (20)

1. 1. A battery device, characterized by comprising: The box body is provided with a top cover; at least two battery monomers positioned in the box body; The heat exchange assembly is arranged on the top sides of the at least two battery monomers and comprises at least two heat exchange pieces, at least one heat exchange piece is arranged to be a flexible piece, at least one heat exchange piece is arranged to be a rigid piece, the flexible piece and the rigid piece are arranged in a lamination mode to form a medium flow channel, the medium flow channel is used for conducting heat exchange media, and the heat exchange media are used for exchanging heat with the at least two battery monomers; wherein the heat exchange assembly is integrated to the top cover.
2. 2. The battery device of claim 1, wherein the rigid member is configured such that the top cover or the rigid member is disposed on a bottom side of the top cover.
3. 3. The battery device of claim 1, wherein the flexible member is located on a bottom side of the rigid member, the flexible member being in abutment with the battery cell or connected by a thermally conductive structure.
4. 4. The battery device of claim 1, wherein the battery device comprises a thermal insulation member disposed on a side of the heat exchange assembly remote from the at least two battery cells.
5. 5. The battery device of claim 4, wherein the insulating member conforms to a top surface of the heat exchange assembly.
6. 6. The battery device of claim 4, wherein at least a portion of the insulating member is spaced from a top surface of the heat exchange assembly to form an insulating cavity, the insulating cavity being filled with air.
7. 7. The battery device of claim 1, wherein at least a portion of a surface of at least one of the flexible member and the rigid member has a corrosion protection layer.
8. 8. The battery device of claim 7, wherein at least a portion of a surface of the rigid member that forms the media flow path is covered with the corrosion protection layer.
9. 9. The battery device of claim 7, wherein the entire surface of the rigid member facing the flexible member is covered with the corrosion barrier.
10. 10. The battery device of claim 7, wherein the flexible member is a layered structure, the flexible member comprising a metal layer and two corrosion protection layers, the metal layer being disposed layer upon layer between the two corrosion protection layers.
11. 11. The battery device according to any one of claims 1 to 10, wherein the battery device includes an insulating member, a post of the battery cell is disposed on a side close to the heat exchange assembly in the first direction, and the insulating member is disposed between the heat exchange assembly and the at least two battery cells.
12. 12. The battery device of claim 11, wherein the insulator is disposed on a bottom surface of the heat exchange assembly.
13. 13. The battery device according to any one of claims 1 to 10, wherein the flexible member comprises a metal plasticized film.
14. 14. The battery device of claim 13, wherein the flexible member comprises an aluminum plastic film.
15. 15. The battery device according to any one of claims 1 to 10, wherein the flexible member is a layered structure, the flexible member including a metal layer and a non-metal layer, the metal layer and the non-metal layer being sequentially laminated.
16. 16. The battery device of claim 15, wherein the metal layer comprises one or more of aluminum foil, copper foil, and steel foil, and/or, The nonmetallic layer comprises one or more of polyamide, polypropylene, polyphenylene sulfide, polyphthalamide and polyethylene.
17. 17. The battery device of claim 15, wherein the non-metallic layer is a hot melt layer.
18. 18. The battery device according to any one of claims 1 to 10, wherein the thickness of the flexible member is 0.05mm to 1mm.
19. 19. The battery device of claim 18, wherein the flexible member has a thickness of 0.08mm to 0.2mm.
20. 20. The battery device according to any one of claims 1 to 10, wherein the elastic modulus of the flexible member is 0.1MPa to 10000MPa.

Description

Battery device and electric equipment Technical Field The application relates to the technical field of batteries, in particular to a battery device and electric equipment. Background The battery device may be used to store or provide electrical energy, the battery device may be used with electrical equipment, for example, the battery device may be used with a vehicle or the like. In the related art, a vehicle is taken as an example, and in a vehicle equipped with a battery device, the battery device may be used to fully or partially supply power. In the use process of the battery device, the temperature of the battery monomer in the battery device can rise, the temperature of the battery monomer needs to be controlled, otherwise, the performance and the service life of the battery device are easy to be adversely affected. Therefore, how to adjust the temperature of the battery cells through the heat exchange assembly is an important research direction in the art. Disclosure of utility model In view of this, it is desirable to provide a battery device and an electric device, where the top cover may provide support for the heat exchange assembly, so as to facilitate improving the overall structural strength and stability of the battery device. In order to achieve the above object, the technical solution of the embodiment of the present application is as follows: An embodiment of the present application provides a battery device including: The box body is provided with a top cover; at least two battery monomers positioned in the box body; The heat exchange assembly is arranged on the top sides of the at least two battery monomers and comprises at least two heat exchange pieces, at least one heat exchange piece is arranged to be a flexible piece, at least one heat exchange piece is arranged to be a rigid piece, the flexible piece and the rigid piece are arranged in a lamination mode to form a medium flow channel, the medium flow channel is used for conducting heat exchange media, and the heat exchange media are used for exchanging heat with the at least two battery monomers; wherein the heat exchange assembly is integrated to the top cover. According to the battery device provided by the embodiment of the application, the heat exchange component is used for exchanging heat with the battery monomer, and the heat exchange component comprises the flexible component and the rigid component, so that the flexible component is lighter in weight, the weight of the heat exchange component is reduced, the production cost of the heat exchange component is reduced, the weight of the battery device is reduced, the rigid component can improve the structural strength of the heat exchange component, the heat exchange component can bear the battery monomer better, the flexible component and the rigid component are arranged in a stacked manner so as to form at least one medium flow channel, the rigid component can play a supporting role on the flexible component, the overall structural strength and stability of the heat exchange component are improved, and the applicability of the heat exchange component is improved. The temperature of the top side of the battery monomer is relatively higher, the heat exchange component is arranged on the top sides of at least two battery monomers, the heat exchange component is closer to the relatively higher part of the battery monomer temperature, the high-temperature side of the battery monomer is cooled faster, the temperature of the high-temperature area of the battery monomer is reduced, the heat exchange efficiency is improved, and the problem that the temperature difference of the top and bottom directions of the battery monomer is large is solved to a certain extent. The heat exchange assembly is integrated to the top cover, and the heat exchange assembly is connected with the top cover or can be a part of the structure of the top cover, and the top cover can provide support for the heat exchange assembly, so that the overall structural strength and stability of the battery device are improved. In some embodiments, the rigid member is configured such that the top cover or the rigid member is disposed on a bottom side of the top cover. In this embodiment, the rigid member is configured as a top cover, and the rigid member is a part of the case, so that a part of the structure can be saved, the cost can be saved, and the overall weight of the battery device can be reduced. The rigid piece sets up in the bottom side of top cap, and heat exchange assembly can wholly be located the box, and the top cap can shield the rigid piece to protect heat exchange assembly better. In some embodiments, the flexible member is located at the bottom side of the rigid member, and the flexible member is abutted to the battery cell or connected through a heat conducting structure. In this embodiment, the flexible piece is in butt with the battery monomer, and the flexible piece can laminate the battery mono