Battery, power consumption apparatus, method and apparatus for producing battery

Patent metadata

Field	Value
Publication number	US-2022311084-A1
Application number	US-202117563364-A
Country	US
Kind code	A1
Filing date	Dec 28, 2021
Priority date	Mar 23, 2021
Publication date	Sep 29, 2022
Grant date	—

Abstract

Embodiments of the present application provide a battery, a power consumption apparatus, a method and apparatus for producing a battery. The battery includes: a battery cell including a pressure relief mechanism disposed on a first wall; and a thermal management component, a first surface of the thermal management component being attached to the first wall, and the thermal management component being provided with a pressure relief zone; where the first wall is provided with a first restraint member, the thermal management component is provided with a second restraint member, and the first restraint member and the second restraint member are arranged to be mated, so that the pressure relief mechanism is arranged opposite to the pressure relief zone. A battery, a power consumption apparatus, a method and apparatus for producing a battery of the present application could enhance safety of the battery.

First claim

What is claimed is:

1 . A battery, comprising:
a battery cell comprising a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the battery cell, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; and a thermal management component configured to accommodate a fluid to adjust a temperature of the battery cell, a first surface of the thermal management component being attached to the first wall, and the thermal management component being provided with a pressure relief zone, so that emissions discharged from an inside of the battery cell are capable of being discharged through the pressure relief zone when the pressure relief mechanism is actuated; wherein the first wall is provided with a first restraint member, the thermal management component is provided with a second restraint member, and the first restraint member and the second restraint member are arranged to be mated, so that the pressure relief mechanism is arranged opposite to the pressure relief zone.

2 . The battery according to claim 1 , wherein the first restraint member comprises a protrusion structure and the second restraint member comprises a groove structure, or the first restraint member comprises a groove structure and the second restraint member comprises a protrusion structure; and
the protrusion structure is at least partially accommodated in the groove structure.

3 . The battery according to claim 2 , wherein a gap is provided between the pressure relief mechanism and the first surface, and the gap is configured to provide a deformation space for the pressure relief mechanism, so that the pressure relief mechanism deforms toward the thermal management component.

4 . The battery according to claim 3 , wherein a height of the protrusion structure is greater than a depth of the groove structure.

5 . The battery according to claim 3 , wherein the second restraint member comprises the groove structure, the second restraint member comprises a first protrusion and a second protrusion in sequence around the pressure relief zone in a direction outward from a center of the pressure relief zone, and the groove structure is formed between the first protrusion and the second protrusion.

6 . The battery according to claim 3 , wherein the first restraint member comprises the groove structure, the first restraint member comprises a third protrusion and a fourth protrusion in sequence around the pressure relief mechanism in a direction outward from a center of the pressure relief mechanism, and the groove structure is formed between the third protrusion and the fourth protrusion.

7 . The battery according to claim 2 , wherein two first restraint members are disposed around the pressure relief mechanism, and one of the two first restraint members overlaps with the other first restraint member after rotating 180° about a central point of the pressure relief mechanism on the first wall.

8 . The battery according to claim 7 , wherein two second restraint members are disposed around the pressure relief zone, and one of the two second restraint members overlaps with the other second restraint member after rotating 180° about a central point of the pressure relief zone on the first surface.

9 . The battery according to claim 1 , wherein two first restraint members are disposed around the pressure relief mechanism, and one of the two first restraint members overlaps with the other first restraint member after rotating 180° about a central point of the pressure relief mechanism on the first wall.

10 . The battery according to claim 9 , wherein two second restraint members are disposed around the pressure relief zone, and one of the two second restraint members overlaps with the other second restraint member after rotating 180° about a central point of the pressure relief zone on the first surface.

11 . The battery according to claim 1 , wherein the first restraint member is an annular structure surrounding a periphery of the pressure relief mechanism.

12 . The battery according to claim 11 , wherein the second restraint member is an annular structure surrounding a periphery of the pressure relief zone.

13 . The battery according to claim 1 , wherein an area of the pressure relief zone is larger than or equal to an area of the pressure relief mechanism.

14 . The battery according to claim 1 , wherein the pressure relief zone is a through hole.

15 . The battery according to claim 1 , wherein the thermal management component comprises a groove arranged opposite to the pressure relief mechanism, a bottom wall of the groove forms the pressure relief zone, and a thickness of the thermal management component at the bottom wall of the groove is smaller than a thickness of the thermal management component at another region other than the groove.

16 . The battery according to claim 1 , wherein a melting point of a material of the pressure relief zone is smaller than a melting point of a material of another region on the thermal management component other than the pressure relief zone.

17 . A power consumption apparatus, comprising a battery, the battery being configured to provide electric energy for the power consumption apparatus, the battery comprising:
a battery cell comprising a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the battery cell, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; and a thermal management component configured to accommodate a fluid to adjust a temperature of the battery cell, a first surface of the thermal management component being attached to the first wall, and the thermal management component being provided with a pressure relief zone, so that emissions discharged from an inside of the battery cell are capable of being discharged through the pressure relief zone when the pressure relief mechanism is actuated; wherein the first wall is provided with a first restraint member, the thermal management component is provided with a second restraint member, and the first restraint member and the second restraint member are arranged to be mated, so that the pressure relief mechanism is arranged opposite to the pressure relief zone.

18 . The power consumption apparatus according to claim 17 , wherein the first restraint member comprises a protrusion structure and the second restraint member comprises a groove structure, or the first restraint member comprises a groove structure and the second restraint member comprises a protrusion structure; and
the protrusion structure is at least partially accommodated in the groove structure.

19 . A method for producing a battery, comprising:
providing a battery cell, the battery cell comprising a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the battery cell, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; and providing a thermal management component, the thermal management component being configured to accommodate a fluid to adjust a temperature of the battery cell, a first surface of the thermal management component being attached to the first wall, and the thermal management component be

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Li Xianda
• Chen Xiaobo
• Li Yao
• Gu Mingguang
• Yang Piaopiao
• Hu Lu

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/308

  Detachable arrangements, e.g. detachable vent plugs or plug systems · CPC title

• H01M50/392

  with means for neutralising or absorbing electrolyte; with means for preventing leakage of electrolyte through vent holes · CPC title

• H01M50/358

  External gas exhaust passages located on the battery cover or case · CPC title

• H01M2200/10

  Temperature sensitive devices · CPC title