Battery, battery module and electric equipment

Patent metadata

Field	Value
Publication number	US-2021359379-A1
Application number	US-202017059076-A
Country	US
Kind code	A1
Filing date	Aug 10, 2020
Priority date	Apr 9, 2020
Publication date	Nov 18, 2021
Grant date	—

Abstract

The present application relates to the field of batteries, in particular to a battery, a battery module and an electric equipment. The battery of the present application includes: a connection member, including a first connection portion configured to be electrically connected with an electrode assembly and a second connection portion configured to be electrically connected with an electrode terminal, and the first connection portion is in a folded state along a crease relative to the second connection portion; the crease is arranged between a first end face and a second end face of the first connection portion; and when the connection member is in an expanded state, the second end face and the first end face are arranged along a length direction.

First claim

1 . A battery, comprising:
a connection member, comprising a first connection portion configured to be electrically connected with an electrode assembly and a second connection portion configured to be electrically connected with an electrode terminal, wherein the first connection portion is in a folded state along a crease relative to the second connection portion; wherein the crease is arranged between a first end face and a second end face of the first connection portion; and when the connection member is in an expanded state, the second end face and the first end face are arranged along a length direction.

2 . The battery as claimed in claim 1 , wherein a first notch is arranged on a side of the first connection portion adjacent to the second connection portion, and the crease extends to the first notch.

3 . The battery as claimed in claim 2 , wherein when the connection member is in the expanded state, the first notch extends along the length direction or along a direction intersected with the length direction.

4 . The battery as claimed in claim 3 , wherein the second end face is far away from the second connection portion relative to the first end face, and along a direction from the first end face to the second end face, the first notch inclines towards a middle of a width direction of the connection member.

5 . The battery as claimed in claim 2 , wherein the first notch comprises an arc-shaped notch part, and an outline of the arc-shaped notch part is arc-shaped.

6 . The battery as claimed in claim 1 , wherein the first connection portion comprises a protruding part, and the protruding part protrudes out of the second connection portion along a width direction of the connection member.

7 . The battery as claimed in claim 1 , wherein the connection member comprises a connecting part, the connecting part is configured to be connected with the electrode assembly, and when the connection member is in the expanded state, the connecting part protrudes out of the crease along a direction from the first connection portion to the second connection portion.

8 . The battery as claimed in claim 1 , wherein a projection of the connection member is not overlapped with a projection of an injection hole along an axial direction of the injection hole, wherein the injection hole is configured to allow electrolyte to be injected.

9 . The battery as claimed in claim 8 , wherein the projection of the connection member is not overlapped with a projection of a hole plug along the axial direction of the injection hole, wherein the hole plug extends into the injection hole and penetrates out from a side of the injection hole adjacent to the electrode assembly.

10 . The battery as claimed in claim 9 , further comprising a protection member configured to prevent the hole plug from contacting with the connection member.

11 . The battery as claimed in claim 1 , further comprising a first insulating member, wherein the first insulating member is arranged at a side of an end cover of the battery adjacent to the electrode assembly, the first insulating member comprises an insulating body and a limiting ring, and the limiting ring protrudes toward a direction close to the electrode assembly relative to the insulating body, and is arranged on a periphery of the connection member, so as to prevent the connection member from contacting with a case of the battery.

12 . The battery as claimed in claim 11 , wherein the limiting ring is arranged on a periphery of an end, adjacent to the end cover, of a tab of the electrode assembly.

13 . The battery as claimed in claim 11 , wherein the first insulating member comprises a supporting part disposed on the insulating body, and the supporting part protrudes from the insulating body towards a direction where the electrode assembly is located, and is supported between the insulating body and the first connection portion.

14 . The battery as claimed in claim 13 , wherein the supporting part and an inner surface of the limiting ring are arranged at intervals, or the supporting part is in contact with an inner surface of the limiting ring.

15 . The battery as claimed in claim 11 , wherein the insulating body is provided with a weight reduction groove, and the weight reduction groove is concave towards a direction where the electrode assembly is located from an end face of the insulating body far away from the electrode assembly.

16 . The battery as claimed in claim 8 , comprising an end cover, wherein the end cover comprises a body part, a first boss and a second boss, the first boss protrudes from the body part towards a side where the electrode assembly is located, the second boss protrudes from the first boss towards a side where the electrode assembly is located, and the injection hole penetrates through the first boss and the second boss.

17 . A battery module comprising the battery as claimed in claim 1 .

18 . An electric equipment, comprising the battery module as claimed in claim 17 , wherein the battery module is configured to provide electric energy.

19 . (canceled)

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Chen Yuanbao
• Li Quankun
• Wang Peng
• Jiang Lingyan

Classifications

• H01M10/058

  Construction or manufacture · 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

• H01M50/213

  adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) · CPC title

• H01M50/682

  accommodated in battery or cell casings · CPC title

• H01M50/503 Primary

  characterised by the shape of the interconnectors · CPC title