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CN-224204265-U - Battery cell group module and battery pack

CN224204265UCN 224204265 UCN224204265 UCN 224204265UCN-224204265-U

Abstract

The application provides a battery cell group module and a battery pack, wherein the battery cell group module comprises a plurality of battery cell stacks, a connecting assembly and two side plate groups, the battery cell stacks are distributed along a first direction, each battery cell stack comprises a plurality of battery cells stacked along a second direction, the connecting assembly comprises at least one connecting beam and at least two groups of connecting belts, the connecting beams are arranged between every two adjacent battery cell stacks, the connecting belts are arranged at two ends of the whole body, which is formed by the plurality of battery cell stacks, distributed along the first direction, the two side plate groups are positioned at two sides, distributed along the second direction, of the battery cell stacks, and the two side plate groups are connected through the connecting assembly and clamp and fix the battery cell stacks. According to the battery cell group module and the battery pack, the connecting beams at the two ends of the plurality of battery cell stacks along the first direction are replaced by the connecting bands, so that the number of the connecting beams in the battery cell group module is reduced, and the material cost, the weight and the occupied space of the battery cell group module can be effectively reduced.

Inventors

  • YANG WENBING
  • FU FANGKAI
  • HE YAFEI

Assignees

  • 株式会社AESC日本

Dates

Publication Date
20260505
Application Date
20250516

Claims (16)

  1. 1. A battery cell stack module, comprising: A plurality of cell stacks arranged along a first direction, each cell stack including a plurality of cells arranged in a stack along a second direction; The connecting assembly comprises at least one connecting beam and at least two groups of connecting belts, the connecting beams are arranged between two adjacent cell stacks, and the connecting belts are arranged at two ends of the whole body formed by the cell stacks and distributed along the first direction; The two side plate groups are positioned on two sides of the battery cell stacking body and distributed along the second direction, and the two side plate groups are connected through the connecting assembly and clamp and fix the battery cell stacking body.
  2. 2. The battery module according to claim 1, wherein the connection strap includes a strap body extending in the second direction, and two ends of the strap body are connected to the two side plate groups in one-to-one correspondence.
  3. 3. The battery module of claim 2, wherein one of a hook and a positioning groove is formed at an end of the belt body, the other side plate group is formed with the other side plate group, and the hook is hooked to the positioning groove.
  4. 4. The battery module of claim 3, wherein the connection strap includes a first connection portion and the hook, the first connection portion being connected to the strap body, the hook being connected to a side of the first connection portion that is proximate to the side plate group; The positioning groove is formed on the wall surface of the side plate group.
  5. 5. The battery cell module of claim 3, wherein the connecting strap comprises a first connecting portion, a second connecting portion and the hook, the strap body is connected with at least the first connecting portion, one end of the second connecting portion is connected to one side of the first connecting portion, which is close to the side plate group, the other end of the second connecting portion is connected with the hook, and an included angle is formed between the first connecting portion and the second connecting portion; The side plate group comprises a first surface close to the battery cell stacking body and a second surface adjacent to the first surface, wherein an accommodating groove is formed in the second surface, a positioning groove is formed in the groove wall of the accommodating groove close to the battery cell stacking body, and at least part of the second connecting part is inserted into the accommodating groove so that the hook is hooked in the positioning groove.
  6. 6. The battery module of claim 5, wherein the same second surface is formed with at least two receiving grooves along a second direction, and a groove wall of each receiving groove adjacent to the battery stack is formed with the positioning groove.
  7. 7. The battery module of claim 5, wherein the strap is connected to the first and second connection portions, respectively, and/or, The belt body is connected to one side of the first connection part, which is close to the cell stack body.
  8. 8. The battery module of claim 4 or 5, wherein the first connection portion is provided with a force application hole.
  9. 9. The battery cell module of claim 8, wherein the force application hole is disposed on a side of the first connection portion that is remote from the battery cell stack.
  10. 10. The battery module of claim 2, wherein the end of the strap body is formed with a hook through which the connection strap is hooked with the side plate group.
  11. 11. The cell stack module of claim 1, wherein each of the side plate groups comprises a plurality of side plate sections distributed along a first direction and detachably connected, the side plate sections located at both sides of the same cell stack being detachably connected with the connection beams located at least one end of the corresponding cell stack along the first direction, and clamping the cell stack when connected.
  12. 12. The battery module of claim 11, further comprising a battery management system including a plurality of slave control boards, each of the side plate segments having the slave control board mounted thereto, the slave control boards electrically connected to the battery stack corresponding to the side plate segments.
  13. 13. The battery cell module of claim 1, wherein the battery cells comprise soft-pack battery cells.
  14. 14. The battery module according to claim 1, wherein each of the connection bands includes at least two connection bands, and two ends of the two side plate groups along the first direction are connected to the two connection bands in a one-to-one correspondence.
  15. 15. A battery pack comprising a case and the cell stack module of any one of claims 1 to 14 connected to the case.
  16. 16. The battery pack of claim 15, wherein the case comprises a plate-shaped lower case, and the side plate group is connected to the lower case by a fastener.

Description

Battery cell group module and battery pack Technical Field The application relates to the technical field of power batteries, in particular to a battery cell group module and a battery pack. Background A plurality of battery modules may be disposed in the battery pack (pack), each battery module including at least one cell stack, each cell stack including a plurality of stacked cells. In order to maintain the stacked state of the plurality of battery cells, the battery module generally needs to provide a case or frame structure for accommodating the battery cells, which results in high material costs of the battery pack and complicated assembly processes. Disclosure of utility model In view of the above, the present application is directed to a battery module and a battery pack, which at least partially solve the problem of high material cost of the battery pack. According to the purpose, the first aspect of the application provides a battery cell group module, which comprises a plurality of battery cell stacks, wherein the battery cell stacks are arranged along a first direction, each battery cell stack comprises a plurality of battery cells which are stacked along a second direction, a connecting assembly comprises at least one connecting beam and at least two groups of connecting belts, the connecting beams are arranged between every two adjacent battery cell stacks, the connecting belts are arranged at two ends of the whole battery cell stacks, which are distributed along the first direction, of the battery cell stacks, and two side plate groups are positioned at two sides of the battery cell stacks, which are distributed along the second direction, and are connected and clamped by the connecting assembly. Optionally, the connecting belt comprises a belt body extending along the second direction, and two ends of the belt body are connected with the two side plate groups in a one-to-one correspondence manner. Optionally, one of a hook and a positioning groove is formed at the end of the belt body, the other side plate group is formed with the other side plate group, and the hook is hooked to the positioning groove. Optionally, the connecting belt comprises a first connecting part and the hook, the first connecting part is connected with the belt body, the hook is connected to one side of the first connecting part, which is close to the side plate group, and the positioning groove is formed on the wall surface of the side plate group. Optionally, the connecting band includes first connecting portion, second connecting portion and couple, the area body at least with first connecting portion connects, the one end of second connecting portion connect in first connecting portion be close to one side of curb plate group, the other end is connected with the couple, first connecting portion with form the contained angle between the second connecting portion, the curb plate group includes and is close to the first surface of electric core stack body, and with the second surface adjacent of first surface, the second surface is formed with the holding tank, the holding tank be close to the cell wall of electric core stack body is formed with the constant head tank, at least part second connecting portion peg graft in the holding tank, so that the couple hook joint in the constant head tank. Optionally, at least two accommodating grooves are formed on the same second surface along the second direction, and the positioning groove is formed on a groove wall, close to the cell stack, of each accommodating groove. Optionally, the belt body is connected with the first connecting part and the second connecting part respectively, and/or the belt body is connected with one side of the first connecting part, which is close to the battery cell stacking body. Optionally, the first connecting portion is provided with a force application hole. Optionally, the force application hole is disposed at a side of the first connection portion away from the cell stack body. Optionally, a hook is formed at an end of the belt body, and the connecting belt is hooked with the side plate group through the hook. Optionally, each side plate group includes a plurality of side plate sections distributed along a first direction and detachably connected, the side plate sections located at two sides of the same cell stack are detachably connected with the connecting beams located at least one end of the corresponding cell stack along the first direction, and the cell stack is clamped and fixed when connected. Optionally, the battery module further includes a battery management system, where the battery management system includes a plurality of slave control boards, each of the side board sections is provided with the slave control board, and the slave control board is electrically connected with the battery stack corresponding to the side board section. Optionally, the battery cell includes a soft package battery cell. Optionally, each group of the