Search

CN-121507294-B - Battery device and electricity utilization device

CN121507294BCN 121507294 BCN121507294 BCN 121507294BCN-121507294-B

Abstract

The application relates to the technical field of battery structures and provides a battery device and an electric device, wherein the battery device comprises a concrete frame body and a plurality of battery cells, the concrete side wall of the concrete frame body comprises a concrete structure part and a reinforcement arranged in the concrete structure part, the concrete structure part is provided with a first wall and a second wall, the first wall is abutted against the corresponding end part of a battery cell assembly along a first direction, the plurality of first reinforcement parts of the reinforcement part are arranged in the second wall on at least one side, and the first reinforcement parts extend into the two first walls which are connected.

Inventors

  • WANG ZHI
  • HUANG FUYONG
  • Wu Guangdang
  • SHI WEIGANG
  • HUANG HAIYANG

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260113

Claims (17)

  1. 1. A battery device is characterized by comprising A plurality of battery cells which are sequentially arranged along a first direction to form a battery cell assembly, and The concrete frame body comprises a concrete side surrounding wall, wherein the concrete side surrounding wall surrounds the battery unit component and forms a containing cavity, the battery unit component is contained in the containing cavity, the concrete side surrounding wall comprises a concrete structure part and a reinforcing piece, the reinforcing piece is arranged in the concrete structure part, the concrete structure part is provided with two first walls which are oppositely arranged along the first direction and two second walls which are oppositely arranged along the second direction, the first walls are connected with the second walls, the first walls are abutted to corresponding ends of the battery unit component along the first direction, the reinforcing piece comprises a plurality of first reinforcing parts, the first reinforcing parts are arranged in the second walls on at least one side, the first reinforcing parts extend into the two first walls which are connected with the second walls, and the plurality of first reinforcing parts are sequentially distributed along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.
  2. 2. The battery device according to claim 1, wherein the first reinforcing portion includes a second reinforcing section provided in the second wall of the corresponding side and first reinforcing sections provided in the first wall of the corresponding side, and first reinforcing sections provided at opposite ends of the second reinforcing section.
  3. 3. The battery device according to claim 1, wherein the first reinforcement portion includes two first reinforcement sections disposed opposite to each other in the first direction and two second reinforcement sections disposed opposite to each other in the second direction, opposite ends of the first reinforcement sections being connected to the corresponding second reinforcement sections, respectively; the two first reinforcing sections are respectively arranged in the corresponding first walls, and the two second reinforcing sections are respectively arranged in the corresponding second walls.
  4. 4. The battery device according to any one of claims 1 to 3, wherein the reinforcement further includes a second reinforcement portion provided inside at least one of the first wall and the second wall, the second reinforcement portion being connected to a plurality of the first reinforcement portions.
  5. 5. The battery device according to any one of claims 1 to 3, wherein the concrete frame further comprises an abutting member, at least part of which is provided on a side surface of the first wall facing the inside of the accommodation chamber, the abutting member being for abutting against the battery cell.
  6. 6. The battery device according to claim 5, wherein the abutting member is integrally formed with the first wall, or the abutting member is attached to a side surface of the first wall facing into the accommodation chamber.
  7. 7. The battery device according to any one of claims 1 to 3 and 6, wherein the concrete frame further comprises a connector having a connection hole, the connector is provided inside at least one of the first wall and the second wall, the connection hole penetrates through the connector and the concrete structure in a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.
  8. 8. The battery device according to any one of claims 1 to 3 and 6, wherein the concrete frame further comprises a concrete bottom wall, the concrete bottom wall is capped at one end of the concrete side wall along a third direction, the concrete bottom wall and the concrete side wall jointly enclose the accommodating cavity, and the first direction, the second direction and the third direction are perpendicular to each other.
  9. 9. The battery device of claim 8, wherein the concrete frame further comprises a heat exchange member coupled to the concrete bottom wall and in heat exchange relationship with the battery cell assembly.
  10. 10. The battery device according to claim 9, wherein the heat exchanging member comprises a heat exchanging portion and an interface portion provided on the heat exchanging portion, a heat exchanging flow passage is formed in the heat exchanging portion, and the interface portion communicates with the heat exchanging flow passage; The heat exchange part is arranged on one side surface of the concrete bottom wall facing the accommodating cavity, or is integrally formed in the concrete bottom wall, and the interface part is exposed out of the concrete bottom wall.
  11. 11. The battery device of claim 9, wherein the concrete frame further comprises a guard, at least a portion of the guard being disposed on a side surface of the concrete bottom wall facing into the receiving cavity, the guard being configured to contact the battery cell assembly.
  12. 12. The battery device of claim 11, wherein the guard is integrally formed with the concrete bottom wall or the guard is attached to a side surface of the concrete bottom wall facing into the receiving chamber.
  13. 13. The battery device of claim 11 or 12, wherein the guard is a thermally conductive structure.
  14. 14. The battery device according to claim 10, wherein the interface portion is provided outside the accommodation chamber.
  15. 15. The battery device of claim 8, wherein the concrete bottom wall and the concrete side enclosure wall are of an integrally formed construction.
  16. 16. The battery device of claim 1, wherein the concrete frame is a cement concrete frame.
  17. 17. An electrical device, characterized in that it comprises a battery device according to any one of claims 1 to 16 for providing electrical energy.

Description

Battery device and electricity utilization device Technical Field The application relates to the technical field of battery structures, in particular to a battery device and an electricity utilization device. Background Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery device technology is an important factor in the development of the electric vehicles. The battery device comprises a plurality of battery cells, the battery cells are arranged in groups, and the battery cells are bundled and bound with the end plates by adopting binding pieces after being grouped, so that the expansion force requirements of the battery cells are met. However, the binding mode has low structural strength, and the binding member for binding the battery cells may be broken or the like under the condition that the battery cells are expanded. Disclosure of Invention The embodiment of the application aims to provide a battery device and an electric device, and aims to solve the problem that the structure strength of a mode of binding and binding battery cell assemblies in the related art is low. In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows: The embodiment of the application provides a battery device, which comprises a concrete frame body and a plurality of battery cells, wherein the battery cells are sequentially distributed along a first direction to form a battery cell assembly, the concrete frame body comprises a concrete side surrounding wall, the concrete side surrounding wall is arranged around the battery cell assembly and forms a containing cavity, the battery cell assembly is contained in the containing cavity, the concrete side surrounding wall comprises a concrete structure part and a reinforcing piece arranged in the concrete structure part, the concrete structure part is provided with two first walls and two second walls, the two first walls are oppositely arranged along the first direction, the two second walls are oppositely arranged along the second direction, the first walls are connected with the second walls, the first walls are abutted to corresponding ends of the battery cell assembly along the first direction, the reinforcing piece comprises a plurality of first reinforcing parts, the first reinforcing parts are arranged in the second walls on at least one side, the first reinforcing parts extend into the two first walls connected with the second walls, and are sequentially distributed along a third direction, and the first direction, the second direction and the second direction are perpendicular to the third direction. The battery device has the advantages that the battery unit component is contained in the containing cavity formed by encircling the concrete side wall, the first walls on the two sides are respectively abutted against the corresponding ends of the battery unit component in the first direction to form binding, the first reinforcing parts can be located in the first walls on the two opposite sides and the second wall on at least one side at the same time, the first reinforcing parts can be connected with the first walls on the two opposite sides and the second wall between the two opposite sides to form a whole, the integral bending rigidity of the first walls and the second walls is improved, the stability and the integral strength of the integral structure of the concrete side wall are improved, meanwhile, the first reinforcing parts can also provide additional rigidity and strength, the acting force exerted by the first walls in the first direction due to expansion of the battery unit can be effectively shared, the concentration of the first walls can be effectively reduced, the probability of damage to the first walls is reduced, and when the concrete frame body forms on the battery unit component, the concrete frame body is better in structural strength, the concrete frame can effectively resist the effect of binding the battery unit frame body, and the probability of damage is lower. In some embodiments, the first reinforcement portion includes a second reinforcement section and first reinforcement sections disposed at opposite ends of the second reinforcement section, the second reinforcement section being disposed within the second wall of the corresponding side, the first reinforcement sections being disposed within the first wall of the corresponding side, respectively. Through adopting foretell technical scheme, utilize the second to strengthen the section setting in the second wall of corresponding side and form the enhancement effect to the second wall, utilize simultaneously with the first enhancement section setting that t