CELL AND ELECTRONIC DEVICE USING SAME - NINGDE AMPEREX TECHNOLOGY LTD

Title:

CELL AND ELECTRONIC DEVICE USING SAME

Document Type and Number:

WIPO Patent Application WO/2022/170451

Kind Code:

A1

Abstract:

A cell, comprising an electrode assembly. The electrode assembly comprises: a first electrode plate comprising a first current collector and a first active material layer arranged on a surface of the first current collector, the first current collector further comprising a first empty foil area, which is not provided with the first active material layer; a second electrode plate; and a separator film arranged between the first electrode plate and the second electrode plate. The electrode assembly is formed by winding the first electrode plate, the separator film, and the second electrode plate in sequence. In a winding direction of the electrode assembly, each of the second layer to the second outermost layer of the first electrode plate comprises a first flat section, and a first bent section and a second bent section, which are arranged on two sides of the first flat section, wherein the first bent section and second bent section are respectively a section on two sides of each layer of the first electrode plate where bending takes place, the first empty foil area is arranged on the first flat section, two sides of the first empty foil area is respectively connected to the first bent section and the second bent section, and the first empty foil area is not provided with the first active material layer in the lengthwise direction of the electrode assembly. An electric device comprises the cell.

Inventors:

YAN CONGFEI (CN)

Application Number:

PCT/CN2021/076149

Publication Date:

August 18, 2022

Filing Date:

February 09, 2021

Export Citation:

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Assignee:

NINGDE AMPEREX TECHNOLOGY LTD (CN)

International Classes:

H01M10/0587; H01M10/0525; H01M50/528

Foreign References:

CN205828514U	2016-12-21
CN206451767U	2017-08-29
CN211350858U	2020-08-25
CN206541895U	2017-10-03
JP2013161755A	2013-08-19

Other References: