Fixing assembly for battery module and battery pack

Patent metadata

Field	Value
Publication number	US-11894569-B2
Application number	US-202217967370-A
Country	US
Kind code	B2
Filing date	Oct 17, 2022
Priority date	Jul 28, 2020
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A fixing assembly for a battery module and a battery pack are provided. The fixing assembly for the battery module includes an end plate, a fixing member, and a first band. The end plate is provided with a limiting member protruding from a surface of the end plate. The fixing member is configured to connect multiple battery modules and abut against the surface of the end plate provided with the limiting member, such that the fixing member, the limiting member, and the end plate can cooperatively define a positioning region. The first band is configured to abut against the surface of the end plate provided with the limiting member to bind the battery module. The first band abuts against the positioning region, such that the fixing member and the limiting member can cooperatively abut against the first band.

First claim

What is claimed is:

1. A fixing assembly for a battery module, comprising:
an end plate, the end plate being configured to abut against an outer sidewall of the battery module and provided with a limiting member protruding from a surface of the end plate, wherein the battery module comprises a plurality of battery cells;
a fixing member, wherein the fixing member and the end plate are disposed in a split manner, the fixing member comprises a main body and at least one connecting portion connected with the main body, each of the at least one connecting portion is configured to connect and be attached to two adjacent battery modules in a plurality of battery modules, and the main body abuts against the surface of the end plate provided with the limiting member, such that the main body, the limiting member, and the end plate cooperatively define a positioning region; and
a first band, the first band being configured to abut against the surface of the end plate provided with the limiting member to bind the plurality of battery cells of the battery module, and the first band abutting against the positioning region, such that both the fixing member and the limiting member abut against the first band.

2. The fixing assembly for the battery module of claim 1 , comprising two fixing members and a second band, wherein
the two fixing members are respectively configured to be connected with two opposite ends of the battery module, and the end plate is provided with two limiting members at a same side of the end plate; and
one of the two limiting members, one of two main bodies, and the end plate cooperatively define one positioning region, and the first band and the second band are respectively configured to be adaptively connected with the two positioning regions.

3. The fixing assembly for the battery module of claim 2 , wherein
the first band is made of alloy, and the second band is made of plastic; and
the first band is adaptively connected with the positioning region close to an electrode of the battery module.

4. The fixing assembly for the battery module of claim 1 , wherein the end plate has a chamfer recessed toward the battery module at each of two opposite ends of the end plate, and the end plate is provided with the limiting member at each of the two chamfers.

5. The fixing assembly for the battery module of claim 1 , wherein the end plate has a chamfer recessed toward the battery module at each of two opposite ends of the end plate, and the end plate is provided with the limiting member at only one chamfer.

6. The fixing assembly for the battery module of claim 2 , wherein the end plate has a chamfer recessed toward the battery module at each of two opposite ends of the end plate, and the end plate is provided with the limiting member at each of the two chamfers.

7. The fixing assembly for the battery module of claim 2 , wherein the end plate has a chamfer recessed toward the battery module at each of two opposite ends of the end plate, and the end plate is provided with the limiting member at only one chamfer.

8. The fixing assembly for the battery module of claim 1 , wherein the limiting member is elongated, and the limiting member extends in a direction parallel to a direction in which the first band extends.

9. The fixing assembly for the battery module of claim 2 , wherein the limiting member is elongated, and the limiting member extends in a direction parallel to a direction in which the first band extends.

10. The fixing assembly for the battery module of claim 3 , wherein the limiting member is elongated, and the limiting member extends in a direction parallel to a direction in which the first band extends.

11. The fixing assembly for the battery module of claim 1 , wherein the limiting member comprises a plurality of protrusions spaced apart from one another, and each of the plurality of protrusions abuts against the first band after the first band is connected with the end plate.

12. The fixing assembly for the battery module of claim 1 , wherein in a direction perpendicular to the end plate, a height of the limiting member is equal to a thickness of the first band.

13. The fixing assembly for the battery module of claim 1 , wherein the main body is elongated, and the connecting portion is connected with one end of the main body, such that the main body is in contact with the surface of the end plate and the connecting portion is in contact with the battery modules.

14. The fixing assembly for the battery module of claim 1 , wherein a width of the positioning region is adapted to a width of the first band, such that both the limiting member and the fixing member abut against the first band.

15. The fixing assembly for the battery module of claim 1 , wherein the main body is a bent strip-shaped sheet, and at least part of the main body abuts against the first band after the fixing member is connected with the battery module.

16. A battery pack comprising:
a plurality of battery modules, wherein each of the plurality of battery modules comprises a plurality of battery cells;
a plurality of end plates, an end plate abutting against an outer sidewall of a battery module and being provided with a limiting member protruding from a surface of the end plate away from the battery module;
a fixing member, wherein the fixing member and the end plate are disposed in a split manner, the fixing member comprises a main body and at least one connecting portion connected with the main body, the main body abuts against the surface of the end plate away from the battery module, and each of the at least one connecting portion is connected with and attached to two adjacent battery modules in the plurality of battery modules, and the main body, the limiting member, and the end plate cooperatively define a positioning region; and
a plurality of first bands, a first band being configured to abut against the surface of the end plate away from the battery module to bind the plurality of battery cells of the battery module, and the first band abutting against the positioning region, such that the fixing member and the limiting member cooperatively limit a movement of the first band.

17. The battery pack of claim 16 , comprising a plurality of second bands and two fixing members, wherein
the two fixing members are respectively connected with two opposite ends of the battery module;
the end plate is provided with two limiting members at a same side of the end plate;
one of the two fixing members, one of two main bodies, and the end plate cooperatively define the positioning region;
the first band is adaptively connected with the positioning region close to an electrode of the battery module, and a second band is adaptively connected with another positioning region; and
each of the plurality of first bands is made of alloy, and each of the plurality of second bands is made of plastic.

18. The battery pack of claim 16 , wherein the end plate has a chamfer recessed toward the battery module at each of two opposite ends of the end plate, and the limiting member is disposed at the chamfer.

19. The battery pack of claim 16 , wherein the limiting member is elongated, and the limiting member extends in a direction parallel to a direction in which the first band extends.

20. The fixing assembly for the battery module of claim 1 , wherein the limiting member is disposed on part of the surface of the end plate in an extending direction of the first band.

Assignees

• Shenzhen Hithium Energy Storage Technology Co Ltd
• Xiamen Hithium Energy Storage Tech Co Ltd

Inventors

• Wu Tingting
• Feng Junmin
• Zhang Wancai

Classifications

• H01M50/264 Primary

  for cells or batteries, e.g. straps, tie rods or peripheral frames · CPC title

• H01M50/209 Primary

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/593

  Spacers; Insulating plates · CPC title

• H01M50/595

  Tapes · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title