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

Patent metadata

Field	Value
Publication number	US-12394859-B2
Application number	US-202117462655-A
Country	US
Kind code	B2
Filing date	Aug 31, 2021
Priority date	Mar 31, 2021
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

Embodiments of the present application provides a battery, a power consumption apparatus, a method and an apparatus for producing the battery. The battery includes: a battery cell, the battery cell including a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the battery cell; a first surface of the thermal management component being attached to the first wall; and a support, the support being arranged opposite to the pressure relief mechanism, the support being configured to support the pressure relief mechanism when the pressure relief mechanism is actuated, so that the pressure relief mechanism is opened at a predetermined angle, therefore emissions from the battery cell can be discharged toward the thermal management component. The technical solutions of embodiments of the present application can enhance safety of batteries.

First claim

What is claimed is:

1. A battery, comprising:
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;
a thermal management component being configured to accommodate a fluid to adjust the temperature of the battery cell, and a first surface of the thermal management component being attached to the first wall; and
a support, the support being arranged opposite to the pressure relief mechanism, the support being configured to support the pressure relief mechanism when the pressure relief mechanism is actuated, so that the pressure relief mechanism is opened at a predetermined angle, therefore emissions from the battery cell can be discharged toward the thermal management component;
wherein the thermal management component is provided with a pressure relief hole, the pressure relief hole is arranged opposite to the pressure relief mechanism, and the pressure relief hole is configured to discharge the emissions.

2. The battery according to claim 1 , wherein there is a gap between the support and the pressure relief mechanism, and the gap is configured to provide open space for the pressure relief mechanism.

3. The battery according to claim 1 , wherein the pressure relief mechanism is provided with a weakened region and a connection region, the weakened region and the connection region form a ring, so that when the pressure relief mechanism is actuated, the pressure relief mechanism can be ruptured at the weakened region and be opened at a predetermined angle.

4. The battery according to claim 3 , wherein an orthographic projection of a farthest point in the weakened region on the first surface is staggered from an orthographic projection of the support on the first surface, and the farthest point is a point farthest from the connection region on the weakened region.

5. The battery according to claim 4 , wherein an extension direction of the support is parallel to an extension direction of the connection region, the extension direction of the connection region is a direction pointing from one end connecting the connection region and the weakened region to the other end connecting the connection region and the weakened region, and the extension direction of the support is a length direction of the support.

6. The battery according to claim 3 , wherein a shape of the weakened region comprises at least one of the following: a “C” shape, a “Z” shape, and an “S” shape.

7. The battery according to claim 1 , wherein a structure of the support is a strip structure.

8. The battery according to claim 7 , wherein a width of an intermediate region of the strip structure is greater than that of two end regions of the strip structure.

9. The battery according to claim 1 , wherein the support covers part of the pressure relief hole, and an area of the support covering the pressure relief hole is less than or equal to 30% of an area of the pressure relief hole.

10. The battery according to claim 1 , wherein the support is arranged in the pressure relief hole.

11. The battery according to claim 10 , wherein the support and the thermal management component are integrally formed.

12. The battery according to claim 1 , wherein a plurality of pressure relief holes are arranged opposite to one support.

13. The battery according to claim 1 , wherein one pressure relief hole is arranged opposite to one support.

14. The battery according to claim 1 , wherein a structure of the support is a hollow structure, the support accommodates a fluid, the support is configured to be damaged by the emissions when the pressure relief mechanism is actuated, so that the fluid in the support is discharged, thereby reducing the temperature of the emissions from the battery cell.

15. The battery according to claim 1 , wherein a melting point of the support is lower than 600° C.

16. The battery according to claim 1 , wherein the thermal management component is configured to be damaged by the emissions discharged at the predetermined angle when the pressure relief mechanism is actuated, so that the fluid in the thermal management component is discharged from an interior of the thermal management component.

17. The battery according to claim 16 , wherein the thermal management component is provided with a temperature-sensitive material, the temperature-sensitive material is configured to be melted by the emissions discharged at the predetermined angle when the pressure relief mechanism is actuated, so that the fluid is discharged from the interior of the thermal management component.

18. The battery according to claim 17 , wherein the temperature-sensitive material is disposed on a region of the thermal management component facing the emissions discharged at the predetermined angle.

19. A power consumption apparatus, comprising: the battery according to claim 1 .

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

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

Classifications

• H01M50/209

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

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M50/147

  Lids or covers · CPC title