Battery, powered device, method for preparing battery, and device for preparing battery

Patent metadata

Field	Value
Publication number	US-11955657-B2
Application number	US-202217935130-A
Country	US
Kind code	B2
Filing date	Sep 25, 2022
Priority date	Jul 29, 2021
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A battery, a powered device, and a method and device for preparing a battery are provided. In some embodiments, the battery includes: a first battery cell and a second battery cell, wherein a pressure relief mechanism of the first battery cell and a pressure relief mechanism of the second battery cell are arranged opposite to 5 each other in a first direction; a box body accommodating the first battery cell and the second battery cell; and a partition component configured to partition the first battery cell and the second battery cell in the first direction, wherein the partition component includes a first wall and a second wall arranged opposite to each other, the first wall is provided with a first through hole, the second wall is provided with a second through hole.

First claim

The invention claimed is:

1. A battery, comprising:
a first battery cell and a second battery cell, wherein a pressure relief mechanism of the first battery cell and a pressure relief mechanism of the second battery cell are arranged opposite to each other in a first direction;
a box body accommodating the first battery cell and the second battery cell; and
a partition component configured to partition the first battery cell and the second battery cell in the first direction, wherein
the partition component includes a first wall and a second wall arranged opposite to each other, wherein the first wall is provided with a first through hole, the second wall is provided with a second through hole, the first through hole being configured to guide emissions discharged from the pressure relief mechanism of the first battery cell, and the second through hole being configured to guide emissions discharged from the pressure relief mechanism of the second battery cell,
a first guard member is attached to the first wall, the first guard member having a first weak portion arranged opposite to the first through hole,
a second guard member is attached to the second wall, the second guard member having a second weak portion arranged opposite to the second through hole; and,

wherein in a cross section perpendicular to the first direction, the area of the first weak portion is greater than that of the first through hole, and the area of the second weak portion is greater than that of the second through hole.

2. The battery according to claim 1 , wherein
the first guard member is attached to the first wall, and the second guard member is attached to the second wall.

3. The battery according to claim 1 , wherein
the first weak portion is arranged by forming a score in the first guard member or by configuring the thickness of the first weak portion to be thinner than other portions of the first guard member, and
the second weak portion is arranged by forming a score in the second guard member or by configuring the thickness of the second weak portion to be thinner than other portions of the second guard member.

4. The battery according to claim 1 , wherein
in the first direction, a projection of the first weak portion covers a projection of the first through hole, and a projection of the second weak portion covers a projection of the second through hole.

5. The battery according to claim 1 , wherein
the box body has an upper cover and a box shell that are connected in a second direction, the first battery cell and the first battery cell are accommodated in a space surrounded by the upper cover and the box shell, the second direction is orthogonal to the first direction,
and the partition component is hermetically connected to the upper cover and the box shell.

6. The battery according to claim 5 , wherein
the first wall, the second wall, the upper cover, and the box shell surround together to form an exhaust passage for the emissions to flow.

7. The battery according to claim 6 , wherein
an exhaust member is formed at a position of the box body opposite to an outlet of the exhaust passage, wherein the exhaust member is configured to discharge the emissions flowing in the exhaust passage to the outside of the box body.

8. The battery according to claim 1 , wherein
the partition component further comprises a connecting component, and the connecting component is configured to connect the first wall and the second wall.

9. The battery according to claim 8 , wherein
the box body has an upper cover and a box shell connected in a second direction, the second direction is orthogonal to the first direction,
both the top and the bottom of the partition component in the second direction are formed with the connecting components, wherein the connecting component at the top is in seal connection with the upper cover, and the connecting component at the bottom is in seal connection with the box shell.

10. The battery according to claim 1 , wherein
the partition component further comprises a first support member configured to support the first guard member, and a second support member configured to support the second guard member.

11. The battery according to claim 10 , wherein
the first support member is connected to the first wall, and
the second support member is connected to the second wall.

12. The battery according to claim 8 , wherein
the partition component further comprises a first support member configured to support the first guard member, and a second support member configured to support the second guard member.

13. The battery according to claim 12 , wherein
the first support member is connected to the first wall and/or the connecting components, and
the second support member is connected to the first second wall and/or the connecting components.

14. The battery according to claim 13 , wherein
a slot for the first guard member to slide is formed between the first wall and the first support member, for positioning the first guard member, and
a slot for the second guard member to slide is formed between the second wall and the second support member, for positioning the second guard member.

15. The battery according to claim 1 , wherein
the first guard member and the second guard member are connected via a guard connector.

16. The battery according to claim 15 , wherein
the first guard member, the guard connector, and the second guard member are integrally formed.

17. A powered device, comprising the battery according to claim 1 , wherein
the battery is configured to provide electrical energy.

18. A method for preparing a battery, comprising:
providing a first battery cell and a second battery cell, wherein a pressure relief mechanism of the first battery cell and a pressure relief mechanism of the second battery cell are arranged opposite to each other in a first direction;
providing a box body, wherein the box body accommodates the first battery cell and the second battery cell;
providing a partition component, wherein the partition component is configured to partition the first battery cell and the second battery cell in the first direction, wherein the partition component comprises a first wall and a second wall arranged opposite to each other, the first wall is provided with a first through hole, the second wall is provided with a second through hole, the first through hole being configured to guide emissions discharged from the pressure relief mechanism of the first battery cell, and the second through hole being configured to guide emissions discharged from the pressure relief mechanism of the second battery cell;
providing a first guard member, wherein the first guard member is attached to the first wall, and the first guard member has a first weak portion arranged opposite to the first through hole; and
providing a second guard member, wherein the second guard member is attached to the second wall, and the second guard member has a second weak portion arranged opposite to the second through hole,
wherein in a cross section perpendicular to the first direction, the area of the first weak portion is greater than that of the first through hole, and the area of the second weak portion is greater than that of the second through hole.

19. A device for preparing a battery, comprising:
a first providing module configured to provide a first battery cell and a second battery cell, wherein a pressure relief mechanism of the first battery cell and a pressure relief mechanism of the second battery cell are

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Tang Yu
• Yang Haiqi
• Zeng Zhimin
• Wang Peng
• Huang Xiaoteng

Classifications

• H01M50/3425 Primary

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

• H01M50/289

  characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) · CPC title

• H01M2220/20

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

• H01M50/24 Primary

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• H01M50/367 Primary

  Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems · CPC title