Box of battery, battery, power consumption device, and method and device for producing battery

Patent metadata

Field	Value
Publication number	US-11784371-B2
Application number	US-202117551775-A
Country	US
Kind code	B2
Filing date	Dec 15, 2021
Priority date	Mar 31, 2021
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

Embodiments of the present application are provided with a box of a battery, a battery, a power consumption device, and a method and device for producing a battery. The box of the battery includes: an electrical chamber; a thermal management component; and a collection chamber, configured to collect emissions from the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated; wherein the thermal management component is configured to isolate the electrical chamber from the collection chamber, a pressure relief region is disposed on the thermal management component, and the emissions collected by the collection chamber is discharged through the pressure relief region. 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 box of a battery, comprising:
an electrical chamber, configured to accommodate a plurality of battery cells, wherein at least one battery cell of the plurality of battery cells comprises a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when an internal pressure or a temperature of the battery cell provided with the pressure relief mechanism reaches a threshold value, to relieve the internal pressure;
a thermal management component, configured to accommodate a fluid to adjust the temperature of the plurality of battery cells; and,
a collection chamber, configured to collect emissions from the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated;
wherein the thermal management component is configured to isolate the electrical chamber from the collection chamber, a pressure relief region is disposed on the thermal management component, and the emissions collected in the collection chamber is discharged to the outside of the collection chamber after passing through the pressure relief region;
wherein the pressure relief region is staggered with the pressure relief mechanism, and
wherein the thermal management component is configured to be capable of making the emissions enter the collection chamber through the thermal management component when the pressure relief mechanism is actuated.

2. The box according to claim 1 , wherein the pressure relief region is a pressure relief hole, and the emissions collected by the collection chamber are discharged through the pressure relief hole; or
the pressure relief region is a weakened zone, and the emissions collected by the collection chamber are discharged after the weakened zone is damaged.

3. The box according to claim 1 , wherein the electrical chamber comprises:
a first pressure balance mechanism, wherein the first pressure balance mechanism is configured to balance a pressure inside and outside of the box, and the emissions are discharged to the outside of the box through the first pressure balance mechanism after passing through the pressure relief region.

4. The box according to claim 3 , wherein the electrical chamber comprises a first sub-chamber and a second sub-chamber, wherein the first sub-chamber is configured to accommodate the plurality of battery cells, the second sub-chamber is arranged adjacent to the first sub-chamber;
an outer wall of the second sub-chamber is provided with the first pressure balance mechanism, and the emissions collected by the collection chamber enter the second sub-chamber through the pressure relief region and are discharged to the outside of the box through the first pressure balance mechanism.

5. The box according to claim 4 , wherein the pressure relief region is disposed on a region of the thermal management component corresponding to the second sub-chamber.

6. The box according to claim 4 , wherein a second pressure balance mechanism is provided on a wall shared by the first sub-chamber and the second sub-chamber, and the second pressure balance mechanism is configured to balance a pressure between the first sub-chamber and the second sub-chamber.

7. The box according to claim 6 , wherein the second pressure balance mechanism is opened in one way, and the second pressure balance mechanism is configured to release an inner pressure to the second sub-chamber when a pressure or a temperature in the first sub-chamber reaches a certain threshold.

8. The box according to claim 7 , wherein the first sub-chamber is communicated with the second sub-chamber only through the second pressure balance mechanism.

9. The box according to claim 4 , wherein a third pressure balance mechanism is provided on other walls of the first sub-chamber except a wall of the first sub-chamber shared by the first sub-chamber and the second sub-chamber, and the third pressure balance mechanism is configured to release the inner pressure to the outside of the box when the pressure or temperature in the first sub-chamber reaches a certain threshold.

10. The box according to claim 4 , wherein the electrical chamber is provided with a hollow beam, a first wall of the second sub-chamber is formed with at least a portion of the hollow beam, a fourth pressure balance mechanism is disposed on the first wall, the emissions collected by the collection chamber enter the hollow beam through the pressure relief region, and then enter the second sub-chamber through the fourth pressure balance mechanism, and is discharged to the outside of the box through the first pressure balance mechanism.

11. The box according to claim 1 , wherein the electrical chamber is provided with a hollow beam, and the hollow beam is configured to be connected to an outer wall of the electrical chamber, a fifth pressure balance mechanism is disposed on the outer wall of the electrical chamber, the emissions collected by the collection chamber enter the hollow beam through the pressure relief region, and is discharged to the outside of the box through the fifth pressure balance mechanism.

12. The box according to claim 10 , wherein the pressure relief region is disposed on a region of the thermal management component corresponding to the hollow beam.

13. The box according to claim 10 , wherein a cooling material is provided in the hollow beam; and/or
wherein a cooling material is provided on a surface of the thermal management component away from the battery cell.

14. The box according to claim 1 , wherein the box further comprises:
a protective component, wherein the protective component is located on one side of the thermal management component away from the battery cell, the collection chamber is formed with the protective component and the thermal management component, and a cooling material is provided on the protective component.

15. The box according to claim 14 , wherein the protective component and the thermal management component are sealed and connected; and/or
wherein the cooling material provided on the protective component is disposed in a region of the protective component corresponding to the pressure relief mechanism.

16. The box according to claim 1 , wherein the thermal management component comprises:
a first thermally conductive plate, wherein the first thermally conductive plate is attached to the plurality of battery cells;
a second thermally conductive plate, wherein the second thermally conductive plate is arranged on one side of the first thermally conductive plate away from the battery cell; and

a flow channel, wherein the flow channel is formed between the first thermally conductive plate and the second thermally conductive plate to allow the fluid to flow therein.

17. A battery, comprising:
a plurality of battery cells, wherein at least one battery cell of the plurality of battery cells comprises a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or a temperature of the battery cell provided with the pressure relief mechanism reaches a threshold value, to relieve the internal pressure; and
a box of the battery, wherein the box comprising:
an electrical chamber, configured to accommodate a plurality of battery cells, wherein at least one battery cell of the plurality of battery cells comprises a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when an internal pressure or a temperature of the battery cell provided with the pressure relief mechanism reaches a threshold value, to relieve the internal

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

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

Classifications

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/058

  Construction or manufacture · CPC title

• H01M10/6554

  Rods or plates · CPC title