US 2020/0091485 A1Published application

Secondary battery

AssigneeContemporary Amperex Technology Co., Limited

InventorsZige ZHANG, Qingrui XUE, Jing LI, Pengxiang WANG, Wei LI

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Abstract

The present disclosure provides a secondary battery, which comprises an electrode assembly, a case and a cap assembly. The electrode assembly comprises a first electrode member, a second electrode member and a separator. The case has an opening and receives the electrode assembly. The cap assembly comprises a cap plate and a first electrode terminal, the cap plate covers the opening of the case; the cap plate has an electrolyte injection hole. The first electrode member comprises a main portion, a first protruding portion and a second protruding portion, the first protruding portion is connected with an end of the main portion close to the cap plate, the second protruding portion connects the first protruding portion and the first electrode terminal. The first protruding portion extends to a lower side of the electrolyte injection hole, and a first end of the first protruding portion is beyond the second protruding portion.

Claims20

Dependent claims

A secondary battery, comprising an electrode assembly, a case and a cap assembly;

the electrode assembly comprising a first electrode member, a second electrode member and a separator, the separator being provided between the first electrode member and the second electrode member;
the case having an opening and receiving the electrode assembly;
the cap assembly comprising a cap plate and a first electrode terminal provided to the cap plate, the cap plate covering the opening of the case;
the cap plate having an electrolyte injection hole;
the first electrode member comprising a main portion, a first protruding portion and a second protruding portion, the first protruding portion being connected with an end of the main portion close to the cap plate, the second protruding portion electrically connecting the first protruding portion and the first electrode terminal;
in a width direction, the first protruding portion extending to a lower side of the electrolyte injection hole, and a first end of the first protruding portion close to the electrolyte injection hole being beyond the second protruding portion.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/267,073Filed 4 Feb 2019
Priority: CN 201811088576.218 Sep 2018
Published: 19 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H01M 10/05
Secondary cells; Manufacture thereof: accumulators with non-aqueous electrolyte
H01M 10/4235
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: safety or regulating additives or arrangements in…
H01M 50/176
Adapted for the shape of the cells: for prismatic or rectangular cells
H01M 50/55
Characterised by the disposition of the terminals on the cells: on the same side of the cell