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

Patent metadata

Field	Value
Publication number	US-11764437-B2
Application number	US-202217834407-A
Country	US
Kind code	B2
Filing date	Jun 7, 2022
Priority date	Mar 15, 2021
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Embodiments of the present application provide a battery, a power consumption apparatus, and a method and apparatus for producing a battery. The battery includes: a plurality of battery cells, the battery cell comprising a housing, the housing being configured to be actuated when an internal pressure or temperature of the housing reaches a threshold, to relieve the internal pressure of the housing; a plurality of first boxes, the first box being configured to accommodate at least one battery cell of the plurality of battery cells, the first box including a pressure relief region, and the pressure relief region being configured to relieve an internal pressure of the first box; and a second box, the second box being configured to accommodate the plurality of first boxes. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced.

First claim

What is claimed is:

1. A battery, comprising:
a plurality of battery cells;
a plurality of first boxes, a first box being configured to accommodate at least one battery cell of the plurality of battery cells; and
a second box, the second box being configured to accommodate the plurality of first boxes, wherein the second box comprises an electrical chamber, a collection chamber and an isolation component, and the electrical chamber is configured to accommodate the plurality of first boxes, the collection chamber is configured to collect emissions from the first box, and the isolation component is configured to isolate the electrical chamber and the collection chamber, so that the electrical chamber and the collection chamber are disposed on both sides of the isolation component.

2. The battery according to claim 1 , wherein the first box comprising a pressure relief region, and the pressure relief region being configured to relieve an internal pressure of the first box.

3. The battery according to claim 2 , wherein the pressure relief region faces the isolation component.

4. The battery according to claim 3 , wherein the first box is a covering with an opening, the opening forms the pressure relief region, and the isolation component covers the opening.

5. The battery according to claim 3 , wherein the first box has a cavity for accommodating the battery cell, the pressure relief region is a first weakened zone of the first box, and the first weakened zone is configured to be actuated when an internal pressure or temperature of the cavity reaches a threshold, to relieve the internal pressure of the cavity.

6. The battery according to claim 5 , wherein a thickness of the first weakened zone is smaller than a thickness of another region of a wall where the first weakened zone is located, and the thickness of the first weakened zone is 0.4 mm-3 mm.

7. The battery according to claim 5 , wherein the first weakened zone has a lower melting point than another region of a wall where the first weakened zone is located, and a melting point of a material of the first weakened zone is lower than 600° C.

8. The battery according to claim 5 , wherein the first box is provided with a first groove, and a bottom wall of the first groove is the first weakened zone, and an opening of the first groove faces the battery cell.

9. The battery according to claim 2 , wherein the isolation component is configured to accommodate a fluid to adjust a temperature of the battery cell, and the isolation component is configured to be capable of being damaged when the pressure relief region relieves the internal pressure, so that the fluid is discharged from an inside of the isolation component.

10. The battery according to claim 2 , wherein the isolation component is provided with a through hole, the through hole is arranged opposite to the pressure relief region, and the through hole is configured for the emissions from the first box to pass through, so that the emissions enter the collection chamber.

11. The battery according to claim 2 , wherein the isolation component is configured to be capable of being damaged when the pressure relief region relieves the internal pressure, so that the emissions from the first box pass through the isolation component and enter the collection chamber.

12. The battery according to claim 11 , wherein the isolation component is provided with a second weakened zone, the second weakened zone is arranged opposite to the pressure relief region, and the second weakened zone is configured to be capable of being damaged by the emissions from the first box, so that the emissions from the first box pass through the second weakened zone and enter the collection chamber.

13. The battery according to claim 12 , wherein a thickness of the second weakened zone is smaller than a thickness of another region of a wall where the second weakened zone is located, and the thickness of the second weakened zone is 0.4 mm-3 mm.

14. The battery according to claim 13 , wherein the second weakened zone has a lower melting point than another region of a wall where the second weakened zone is located, and a melting point of a material of the second weakened zone is lower than 600° C.

15. The battery according to claim 13 , wherein the isolation component is provided with a second groove, and a bottom wall of the second groove is the second weakened zone, and an opening of the second groove faces the first box.

16. The battery according to claim 2 , wherein the pressure relief region is disposed on a first wall of the first box, a first surface of the battery cell is attached to the first wall, all electrode terminals of the battery cell are disposed on a second surface, and the second surface is arranged opposite to the first surface.

17. The battery according to claim 2 , wherein all the battery cells accommodated in one of the first boxes correspond to a same pressure relief region.

18. The battery according to claim 1 , wherein the plurality of first boxes correspond to a same isolation component.

19. The battery according to claim 1 , wherein the battery further comprises:
a protective member, wherein the protective member is configured to protect the isolation component, and the collection chamber is formed between the protective member and the isolation component.

20. The battery according to claim 19 , wherein the battery further comprises:
a sealing member, the sealing member being disposed between the isolation component and the protective member to seal the collection chamber.

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

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

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M50/3425 Primary

  in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member · CPC title

• H01M50/375 Primary

  Vent means sensitive to or responsive to temperature · CPC title

• H01M2220/20

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

• H01M10/625

  Vehicles · CPC title