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

Patent metadata

Field	Value
Publication number	US-12183941-B2
Application number	US-202017139766-A
Country	US
Kind code	B2
Filing date	Dec 31, 2020
Priority date	Oct 19, 2020
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A battery, a power consumption device, and a method and device for producing a battery are disclosed. The battery includes: a first battery cell and a second battery cell adjacent to each other, the first battery cell including a pressure relief mechanism disposed on a first wall of the first battery cell; a fire-fighting pipeline configured to discharge a fire-fighting medium toward the first wall when the pressure relief mechanism is actuated; and a blocking component protruding from the first wall along a direction perpendicular to the first wall, and the blocking component being configured to block the fire-fighting medium discharged from the fire-fighting pipeline from flowing from the first battery cell to the second battery cell to improve the safety performance of the battery.

First claim

What is claimed is:

1. A battery, comprising:
a plurality of battery cells comprising a first battery cell group and a second battery cell group among the plurality of battery cells are arranged side by side along a second direction, the first battery cell group comprises at least two first battery cells arranged side by side along a third direction, the second battery cell group comprises at least two second battery cells arranged side by side along the third direction, and the third direction is perpendicular to the second direction;
the first battery cell comprising a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the first battery cell, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the first battery cell reaches a threshold, to relieve the internal pressure;
a fire-fighting pipeline configured to accommodate a fire-fighting medium and discharge the fire-fighting medium toward the first wall when the pressure relief mechanism is actuated; and
a blocking component protruding from the first wall along a first direction, the first direction being a direction perpendicular to the first wall, the first direction, the second direction and the third direction are perpendicular to each other, and the blocking component being configured to block the fire-fighting medium discharged from the fire-fighting pipeline from flowing from the first battery cell to the second battery cell; wherein a part of the blocking component is clamped between a second wall of the first battery cell and a second wall of the second battery cell, and both the second wall of the first battery cell and the second wall of the second battery cell are perpendicular to the first wall;
a plurality of isolation components being disposed between the first battery cell group and the second battery cell group, each of the plurality of isolation components clamped between the second wall of the first battery cell and the second wall of the second battery cell, the plurality of isolation components being located at one side of the blocking component along the first direction and abutting against an end portion of the blocking component, the each of the plurality of isolation components is configured to block heat transfer between the first battery cell and the second battery cell; and
wherein hardness of the blocking component is greater than hardness of the plurality of isolation components, and a melting point of the blocking component is higher than a melting point of the plurality of isolation components.

2. The battery according to claim 1 , wherein the part of the blocking component is attached to the second wall of the first battery cell and/or the second wall of the second battery cell by a connector.

3. The battery according to claim 1 , wherein the each of the plurality of isolation components along two ends of the first direction respectively are beyond corresponding ends of an electrode assembly of the first battery cell, and/or the each of the plurality of isolation components along two ends of the first direction respectively are beyond corresponding ends of an electrode assembly of the second battery cell.

4. The battery according to claim 1 , wherein the melting point of the blocking component is greater than or equal to 500° C.

5. The battery according to claim 1 , wherein an area of a second wall of the first battery cell is smaller than an area of a surface of a third wall of the first battery cell, an area of a second wall of the second battery cell is smaller than an area of a surface of a third wall of the second battery cell, the second wall of the first battery cell and the second wall of the second battery cell are both perpendicular to the second direction, and the third wall of the first battery cell and the third wall of the second battery cell are both perpendicular to the third direction.

6. The battery according to claim 1 , wherein the first battery cell group and the second battery cell group correspond to an integral blocking component.

7. The battery according to claim 1 , wherein a first electrode terminal of the first battery cell is disposed on the first wall of the first battery cell and protrudes from the first wall of the first battery cell along the first direction; and
a second electrode terminal of the second battery cell is disposed on a first wall of the second battery cell and protrudes from the first wall of the second battery cell along the first direction.

8. The battery according to claim 7 , wherein the first electrode terminal and the second electrode terminal have opposite polarities and are disposed adjacently along the second direction.

9. The battery according to claim 7 , wherein the blocking component protrudes from the first electrode terminal and/or the second electrode terminal along the first direction.

10. The battery according to claim 7 , wherein the battery further comprises:
a first bus component configured to connect the first electrode terminal of the first battery cell, the blocking component protruding from or being aligned with the first bus component along the first direction.

11. The battery according to claim 10 , wherein the battery further comprises:
a second bus component configured to connect the second electrode terminal of the second battery cell, the blocking component protruding from or being aligned with the second bus component along the first direction.

12. A power consumption device, comprising the battery according to claim 1 .

13. A method for producing a battery, comprising:
providing a plurality of battery cells, the plurality of battery cells comprising a first battery cell group and a second battery cell group among the plurality of battery cells are arranged side by side along a second direction, the first battery cell group comprises at least two first battery cells arranged side by side along a third direction, the second battery cell group comprises at least two second battery cells arranged side by side along the third direction, and the third direction is perpendicular to the second direction;
the first battery cell comprising a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the first battery cell, the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the first battery cell reaches a threshold, to relieve the internal pressure;
providing a fire-fighting pipeline, the fire-fighting pipeline being configured to accommodate a fire-fighting medium and discharge the fire-fighting medium toward the first wall when the pressure relief mechanism is actuated;
providing a blocking component, the blocking component protruding from the first wall along a first direction, the first direction being a direction perpendicular to the first wall, the first direction, the second direction and the third direction are perpendicular to each other, and the blocking component being configured to block the fire-fighting medium discharged from the fire-fighting pipeline from flowing from the first battery cell to the second battery cell; wherein a part of the blocking component is clamped between a second wall of the first battery cell and a second wall of the second battery cell, and both the second wall of the first battery cell and the second wall of the second battery cell are perpendicular to the first wall;
providing a plurality of isolation components, the plurality of isolation components being disposed between the first battery cell group and the second battery cell group, each of the plurality of isolation components

Assignees

• Jiangsu Contemporary Amperex Tech Ltd

Inventors

• Wu Kai
• Sun Zhanyu
• Huang Xiaoteng
• Hu Langchao
• Yang Haiqi
• Hong Jiarong
• Wang Wenli

Classifications

• H01M50/59

  characterised by the protection means · CPC title

• H01M10/656

  characterised by the type of heat-exchange fluid · CPC title

• H01M10/6567

  Liquids · CPC title

• H01M10/65

  Means for temperature control structurally associated with the cells · CPC title

• H01M50/375 Primary

  Vent means sensitive to or responsive to temperature · CPC title