Title:
POSITIVE ELECTRODE CURRENT COLLECTOR AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, BATTERY CELL, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/136536
Kind Code:
A1
Abstract:
A positive electrode current collector (100), comprising: a base film (110) and a functional layer (120) arranged on a surface of the base film. The base film has a first surface (111) and a second surface (112) arranged opposite to each other, the first surface (111) is provided with a first functional layer (121), and the second surface (112) is provided with a second functional layer (122). The first functional layer (121) comprises an adhesive layer (130), a diversion layer (140), and a protective layer (150) sequentially arranged in lamination, and the adhesive layer (130) is arranged on the first surface (111). The first functional layer (121) is divided into a first functional section (210) and a second functional section (220) in a direction parallel to the first surface (111), and the thickness of the first functional section (210) is greater than that of the second functional section (220). The first functional section (210) comprises a first coating section (211) and a tab section (213), a surface of the first coating section (211) is used for coating a material, a surface of the tab section (213) is used for connecting to a tab, and the first coating section (211) is arranged between the tab section (213) and the second functional section (220). Further provided are a preparation method for the positive electrode current collector (100), a positive electrode sheet, a battery cell, and a battery.
Inventors:
ZHANG QIN (CN)
Application Number:
PCT/CN2020/142528
Publication Date:
July 08, 2021
Filing Date:
December 31, 2020
Export Citation:
Assignee:
SHENZHEN HAIHONG NEW ENERGY TECH CO LTD (CN)
International Classes:
H01M10/0525; H01M4/66
Foreign References:
| CN211088396U | 2020-07-24 | |||
| CN211088397U | 2020-07-24 | |||
| CN208433464U | 2019-01-25 | |||
| CN208433464U | 2019-01-25 | |||
| CN109873161A | 2019-06-11 | |||
| CN109873161A | 2019-06-11 | |||
| CN102082286A | 2011-06-01 | |||
| CN102082286A | 2011-06-01 | |||
| CN108736016A | 2018-11-02 | |||
| US20130065124A1 | 2013-03-14 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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