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CN-121983753-A - Battery device and electricity utilization device

CN121983753ACN 121983753 ACN121983753 ACN 121983753ACN-121983753-A

Abstract

The application is suitable for the technical field of batteries, and provides a battery device and an electric device, wherein the battery device comprises a box body structure and a first battery module, the first battery module comprises a first electric connection structure and a plurality of battery unit components which are arranged at intervals along a first direction, the battery unit components are provided with a first end part and a second end part which are oppositely arranged along a second direction, the first electric connection structure comprises a first electric connecting piece, the first electric connecting piece comprises two first electric connecting parts and a second electric connecting part electrically connected between the two first electric connecting parts, the two first electric connecting parts are respectively electrically connected with two adjacent battery cell assemblies, the first electric connecting parts are arranged at the first end parts, and the second electric connecting parts are bent towards the second end parts relative to the first electric connecting parts and form accommodating spaces. Like this, first electricity connection structure can dodge crossbeam or longeron betterly, and crossbeam or longeron of being convenient for holds between two adjacent battery cell assemblies.

Inventors

  • XU LIKAI
  • HUANG PEIYAO
  • WANG JIAFU
  • YU KAIQIN
  • ZHANG SHIHUANG

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (20)

  1. 1. A battery device, characterized by comprising: A box structure; The first battery module is arranged in the box body structure and comprises a first electric connection structure and a plurality of battery unit assemblies arranged at intervals along a first direction, the battery unit assemblies are provided with first end parts and second end parts which are arranged oppositely along a second direction, the first electric connection structure comprises a first electric connecting piece, the first electric connecting piece comprises two first electric connecting parts and a second electric connecting part which is electrically connected between the two first electric connecting parts, the first electric connecting parts are arranged on the first end parts, the second electric connecting parts are bent towards the second end parts relative to the first electric connecting parts, and an accommodating space which is at least partially positioned between the two adjacent battery unit assemblies is formed by bending, the accommodating space is used for accommodating a part to be accommodated, and the battery unit assemblies comprise a plurality of battery units, and the two first electric connecting parts of the first electric connecting piece are respectively electrically connected with the battery units of the two adjacent battery unit assemblies; Wherein the first direction and the second direction intersect.
  2. 2. The battery device according to claim 1, wherein the battery cell includes a case, an electrode assembly provided in the case, and an electrode terminal provided at one of ends of the case in the second direction and electrically connected to the electrode assembly; The first electric connecting piece is integrally formed and arranged, and the first electric connecting part extends to the electrode terminal.
  3. 3. The battery device of claim 1, wherein the first electrical connection structure further comprises a second electrical connection electrically connected between the battery cell and the first electrical connection.
  4. 4. A battery device according to any one of claims 1-3, wherein at least one side of the second electrical connection has a bead.
  5. 5. A battery device according to any one of claims 1-3, wherein at least one side of the second electrical connection is provided with a buffer.
  6. 6. A battery device according to any one of claims 1-3, wherein the second electrical connection portion comprises a first bending section and two second bending sections, the two second bending sections are respectively electrically connected between opposite ends of the first bending section and the two first electrical connection portions, one end of the second bending section is bent and arranged relative to the first bending section, the other end of the second bending section is bent and arranged relative to the first electrical connection portion, and the first bending section and the second bending section enclose the accommodating space.
  7. 7. The battery device of claim 6, wherein the first bending section has ribs on at least one side in the second direction and/or the second bending section has ribs on at least one side in the first direction.
  8. 8. The battery device of claim 6, wherein the first bending section is provided with a buffer along at least one side of the second direction, and/or wherein the second bending section is provided with a buffer along at least one side of the first direction.
  9. 9. The battery device according to claim 6, wherein two of the first electrical connection portions of the first electrical connection member are arranged at intervals along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; Wherein in the first electrical connector, the first bending section is arranged obliquely relative to the first direction and the third direction, and/or in the first electrical connector, the second bending section is arranged obliquely relative to the second direction and the third direction.
  10. 10. The battery device of any one of claims 1-3, wherein the battery cell assembly comprises a plurality of battery cell rows distributed along a third direction, the battery cell rows comprising a plurality of the battery cells distributed along the first direction; in the two adjacent battery cell assemblies, the plurality of battery cell rows are arranged in a one-to-one opposite mode along the first direction, and the number and the electric connection mode of the battery cells of any two battery cell rows which are arranged in the opposite mode along the first direction are the same; The first direction, the second direction and the third direction are perpendicular to each other.
  11. 11. The battery device of claim 10, wherein the first battery module has an electrode output, the cell assembly further comprises a third electrical connector, and wherein in the cell assembly, the third electrical connector is electrically connected to the cells of two rows of cells distributed along the third direction to electrically connect the rows of cells; in the second battery unit assembly, the battery unit electrically connected to the first battery unit assembly through the first electrical connector is a first battery unit; In the first battery cell assembly, the battery cell corresponding to the first battery cell is electrically connected to the third electrical connector; or the first battery unit component is provided with the electrode output end, and in the first battery unit component, the battery unit corresponding to the first battery unit position is electrically connected with the electrode output end.
  12. 12. The battery device according to any one of claims 1-3, wherein the battery cell assembly comprises a third electrical connector and a plurality of battery cell rows distributed along a third direction, the battery cell rows comprise a plurality of battery cells distributed along the first direction, the third electrical connector comprises two third electrical connection parts and a fourth electrical connection part electrically connected between the two third electrical connection parts, the two third electrical connection parts of the third electrical connector are respectively electrically connected to the battery cells of the two battery cell rows so as to electrically connect the plurality of battery cell rows, the third electrical connection parts are arranged at positions of the battery cell rows at the first end parts, the fourth electrical connection parts are bent towards the second end parts relative to the third electrical connection parts and are arranged at one side of the battery cell rows along the first direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.
  13. 13. A battery device according to any one of claims 1 to 3, wherein two of the battery cells electrically connected to the first electrical connection member are disposed directly opposite in the first direction.
  14. 14. The battery device according to claim 13, wherein the battery cell has two electrode terminals, the two electrode terminals of the battery cell being arranged at intervals in a third direction, the two first electric connection parts of the first electric connection member being arranged at intervals in the third direction; The first direction, the second direction and the third direction are perpendicular to each other.
  15. 15. A battery device according to any one of claims 1-3, wherein the battery cell assembly further comprises two spacing beams spaced apart along the first direction, in which battery cell assembly the battery cell is positioned between the two spacing beams along the first direction, and a portion of the second electrical connection extends along a surface of the battery cell of the spacing Liang Yuanli.
  16. 16. The battery device of claim 15, wherein one end of the spacing beam along the second direction is provided with a first groove, the first groove penetrates through the spacing beam along the first direction, and the first electrical connection part penetrates through the first groove along the first direction.
  17. 17. The battery device of any one of claims 1-3, wherein the first electrical connection structure further comprises an insulating layer disposed on an outer surface of the second electrical connection.
  18. 18. The battery device according to claim 17, wherein a part of an outer surface of the first electrical connection portion is provided with the insulating layer.
  19. 19. The battery device according to any one of claims 1 to 3, wherein the case structure includes a first portion and a second portion disposed along the second direction, the first battery module is disposed in a space defined by the first portion and the second portion, a plurality of second grooves disposed at intervals along the first direction and a convex portion disposed between two adjacent second grooves are disposed on a side of the second portion facing the first portion, at least portions of the plurality of battery cell assemblies of the first battery module are disposed in the plurality of second grooves, respectively, the convex portion is inserted into the accommodating space, and a third groove is disposed on a side of the second portion facing away from the first portion at a position corresponding to the convex portion.
  20. 20. The battery device of claim 19, further comprising a second battery module including a plurality of the battery cells, the second battery module being disposed within the housing structure and on a side of the first battery module remote from the second portion in the second direction.

Description

Battery device and electricity utilization device Technical Field The application belongs to the technical field of batteries, and particularly relates to a battery device and an electric device. Background The more widely used battery devices are in view of the development of market situations. The battery device is not only applied to energy storage systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of battery devices, the market demand of the battery devices is also continuously expanding. Further, the capacity of the battery device is increasing, and the performance requirements for the battery device are also increasing. In the related art, a battery device generally includes a plurality of battery cell assemblies disposed at intervals, each battery cell assembly includes a plurality of battery cells, and two adjacent battery cell assemblies are electrically connected through an electrical connection structure. In some cases, the receiving space formed at a distance between two adjacent battery cell assemblies is used to receive a cross member or a side member of a vehicle. However, the arrangement of the electrical connection structure inevitably leads to interference with the arrangement of the cross member or the longitudinal member of the vehicle. The statements made above merely serve to provide background information related to the present disclosure and may not necessarily constitute prior art. Disclosure of Invention In view of the above, embodiments of the present application provide a battery device and an electric device, which can improve the technical problem that the arrangement of the battery device on a vehicle is susceptible to interference. In a first aspect, an embodiment of the present application provides a battery device, including: A box structure; The first battery module is arranged in the box body structure and comprises a first electric connection structure and a plurality of battery unit assemblies arranged at intervals along a first direction, the battery unit assemblies are provided with first end parts and second end parts which are arranged oppositely along a second direction, the first electric connection structure comprises a first electric connection piece, the first electric connection piece comprises two first electric connection parts and a second electric connection part electrically connected between the two first electric connection parts, the first electric connection parts are arranged on the first end parts, the second electric connection parts are bent towards the second end parts relative to the first electric connection parts, and are bent to form accommodating spaces at least partially located between the two adjacent battery unit assemblies, the accommodating spaces are used for accommodating components to be accommodated, each battery unit assembly comprises a plurality of battery units, the two first electric connection parts of the first electric connection piece are electrically connected with the battery units of the two adjacent battery unit assemblies respectively, and the first direction and the second direction are crossed. According to the battery device provided by the embodiment of the application, the plurality of battery cell assemblies of the first battery module are arranged at intervals along the first direction, the first electric connection part of the first electric connection piece is arranged at the first end part of the battery cell assembly along the second direction, the second electric connection part is bent towards the second end part of the battery cell assembly relative to the first electric connection part, and the second electric connection part is bent to form the containing space at least partially arranged between two adjacent battery cell assemblies, so that the first electric connection part and the second electric connection part can be bent at an included angle position formed between one end of the battery cell assembly along the second direction and one side of the battery cell assembly along the first direction towards the adjacent battery cell assembly, at least part of the containing space formed by bending the second electric connection part is contained between the two adjacent battery cell assemblies, and the orthographic projection of the second electric connection part perpendicular to the third direction can be approximately U-shaped. Like this, crossbeam or longeron can peg graft in accommodation space, and crossbeam or longeron can dodge better, improves the problem that the arrangement of crossbeam or longeron received the interference of first electric connection structure, and crossbeam or longeron of the