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

Patent metadata

Field	Value
Publication number	US-12476313-B2
Application number	US-202318462030-A
Country	US
Kind code	B2
Filing date	Sep 6, 2023
Priority date	Mar 31, 2021
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

Embodiments of a box of a battery, a battery, a power consumption device, and a method and device for producing a battery are provided. 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; an isolation component; a collection chamber, configured to collect emissions from the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated; and, a protective component, wherein the protective component is located on one side of the isolation component away from the battery cell; wherein the isolation component is configured to isolate the electrical chamber from the collection chamber, a pressure relief region is disposed on the isolation component, and the emissions collected by the collection chamber is discharged through the pressure relief region; and wherein a high-temperature resisting material is pasted on a bottom wall of the protective component.

2 . The box according to claim 1 , wherein a high-temperature resisting material is pasted on a bottom wall of the isolation component or the protective component.

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 isolation component corresponding to the second sub-chamber.

6 . The box according to claim 1 , wherein a cooling material is provided on a surface of the isolation component away from the battery cell.

7 . The box according to claim 1 , wherein the collection chamber is formed with the protective component and the isolation component, and a cooling material is provided on the protective component.

8 . The box according to claim 7 , wherein the protective component and the isolation component are sealed and connected.

9 . The box according to claim 7 , wherein the cooling material provided on the protective component is disposed in a region of the protective component corresponding to the pressure relief mechanism.

10 . The box according to claim 6 , wherein the cooling material is a phase change material.

11 . The box according to claim 1 , wherein the isolation component is configured to be capable of making the emissions enter the collection chamber through the isolation component when the pressure relief mechanism is actuated.

12 . The box according to claim 1 , wherein the isolation component is provided with a wall shared by the electrical chamber and the collection chamber.

13 . The box according to claim 1 , wherein the isolation component is constructed to be damaged when the pressure relief mechanism is actuated to allow the fluid to flow.

14 . The box according to claim 1 , wherein the isolation 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.

15 . The box according to claim 14 , wherein the isolation component in the pressure relief region is not provided with the flow channel.

16 . 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 the box according to claim 1 .

17 . A power consumption device, comprising the battery according to claim 16 .

18 . The power consumption device according to claim 17 , wherein the power consumption device is a vehicle, a ship or a spacecraft.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

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

Classifications

• H01M10/6554

  Rods or plates · CPC title

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M2200/10

  Temperature sensitive devices · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M10/6556

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title