Battery, and related device, preparation method and preparation apparatus thereof

Patent metadata

Field	Value
Publication number	US-2022013849-A1
Application number	US-202017123092-A
Country	US
Kind code	A1
Filing date	Dec 15, 2020
Priority date	Jul 10, 2020
Publication date	Jan 13, 2022
Grant date	—

Abstract

The present application discloses a battery, and a related device, preparation apparatus thereof. The battery includes a battery cell, the battery cell including a pressure relief mechanism and at least two walls, the at least two walls including a first wall and a second wall that intersect with each other, the pressure relief mechanism being disposed at the first wall and being configured to, when an internal pressure or temperature of the battery cell reaches a threshold, be actuated to release the internal pressure; a thermal management component attached to the first wall and being configured to accommodate a fluid to cool the battery cell; and a support component attached to the second wall, and configured to support the battery cell; wherein the thermal management component is configured such that when the pressure relief mechanism is actuated, emissions discharged from the battery cell pass through the thermal management component.

First claim

What is claimed is:

1 . A battery, comprising:
a battery cell, the battery cell comprising:
at least two walls, the at least two walls comprising a first wall and a second wall that intersect with each other; and
a pressure relief mechanism, the pressure relief mechanism being disposed at the first wall, and the pressure relief mechanism being configured to, when an internal pressure or a temperature of the battery cell reaches a threshold, be actuated to release the internal pressure;
a thermal management component attached to the first wall, the thermal management component being configured to accommodate a fluid to adjust the temperature of the battery cell; and a support component attached to the second wall, and configured to support the battery cell; wherein the thermal management component is configured such that when the pressure relief mechanism is actuated, emissions discharged from the battery cell pass through the thermal management component.

2 . The battery according to claim 1 , wherein the battery cell further comprises:
a housing, the housing comprising an accommodating chamber formed by a bottom wall and side walls and an opening capable of approaching the accommodating chamber; and a cover plate, the cover plate being suitable for closing the opening; wherein the first wall comprises the cover plate or at least one of the side walls, and the second wall is the bottom wall.

3 . The battery according to claim 1 , wherein the battery further comprises:
a case, the case comprising a cover body and a case shell, and the case shell and the cover body jointly forming an electrical chamber for accommodating the battery cell in an enclosing manner, wherein the support component is a portion of the case shell or is arranged on an inner side of the case shell.

4 . The battery according to claim 3 , wherein the case further comprises a beam extending between the cover body and the case shell which are arranged opposite each other, and the thermal management component is arranged between the beam and the first wall.

5 . The battery according to claim 1 , wherein the thermal management component and the support component form an integral structure.

6 . The battery according to claim 1 , wherein the thermal management component is provided with a through hole, and the through hole is configured to allow the emissions discharged from the battery cell to pass through the thermal management component.

7 . The battery according to claim 1 , wherein the thermal management component is configured to be capable of being damaged by the emissions discharged from the battery cell, so that the emissions discharged from the battery cell can pass through the thermal management component.

8 . The battery according to claim 1 , wherein the thermal management component is configured to be capable of being damaged by the emissions discharged from the battery cell, so that the fluid flows out from interior of the thermal management component.

9 . The battery according to claim 1 , wherein the thermal management component further comprises:
an avoidance structure, the avoidance structure being configured to be capable of providing a space allowing the pressure relief mechanism to be actuated; and wherein the thermal management component is attached to the battery cell to form an avoidance chamber between the avoidance structure and the pressure relief mechanism.

10 . The battery according to claim 9 , wherein the avoidance structure comprises a bottom avoidance wall and a side avoidance wall surrounding the avoidance chamber, and the bottom avoidance wall is configured to be damaged when the pressure relief mechanism is actuated, so as to allow the emissions to pass through the thermal management component.

11 . The battery according to claim 10 , wherein the bottom avoidance wall comprises a partial relief mechanism, and the partial relief mechanism is configured to, when the pressure relief mechanism is actuated, be actuated to allow at least emissions from the battery cell to be discharged through the thermal management component.

12 . The battery according to claim 10 , wherein the side avoidance wall forms a predetermined angle with respect to the bottom avoidance wall, and the predetermined angle is between 105° and 175°.

13 . The battery according to claim 10 , wherein the side avoidance wall is configured to be damaged when the pressure relief mechanism is actuated, so that the fluid flows out.

14 . The battery according to claim 1 , wherein the battery further comprises:
a collection chamber, the collection chamber being arranged on the other side of the thermal management component with respect to the pressure relief mechanism, and being configured to collect the emissions when the pressure relief mechanism is actuated.

15 . The battery according to claim 14 , wherein the beam has a hollow space, and the hollow space constitutes the collection chamber.

16 . The battery according to claim 14 , wherein the support component further comprises an additional collection chamber, and the additional collection chamber and the collection chamber are operably communicated with each other at a lower portion or bottom of the collection chamber.

17 . The battery according to claim 14 , wherein a diversion structure is arranged in the collection chamber, and the diversion structure is configured to be capable of being favorable for guiding the emissions to a predetermined position.

18 . The battery according to claim 1 , wherein the fluid is a cooling medium, and the thermal management component is configured to accommodate the cooling medium to cool the battery cell.

19 . A device, comprising a battery according to claim 1 , the battery being configured to provide electric energy.

20 . An apparatus for preparing a battery, the apparatus comprising:
a battery cell preparation module configured to prepare a plurality of battery cells, at least one battery cell of the plurality of battery cells comprising:
at least two walls, the at least two walls comprising a first wall and a second wall that intersect with each other; and
a pressure relief mechanism, the pressure relief mechanism being disposed at the first wall, and the pressure relief mechanism being configured to, when an internal pressure or temperature of the battery cell reaches a threshold, be actuated to release the internal pressure;
a thermal management component preparation module, configured to prepare a thermal management component, the thermal management component being configured to accommodate a fluid to adjust the temperature of the battery cell, and being configured such that when the pressure relief mechanism is actuated, emissions discharged from the battery cell pass through the thermal management component; a support component preparation module, configured to prepare a support component, the support component being configured to support the battery cell; and an assembly module, configured to attach the thermal management component to the first wall and attach the support component to the second wall.

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Zeng Yuqun
• Yao Pengcheng
• Zeng Zhimin
• Wu Kai
• Chen Xingdi
• Wang Peng
• Chen Xiaobo

Classifications

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M2200/10

  Temperature sensitive devices · CPC title

• H01M50/383

  Flame arresting or ignition-preventing means · CPC title

• H01M50/375

  Vent means sensitive to or responsive to temperature · 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