Title:
ELECTRODE ASSEMBLY, ELECTROCHEMICAL DEVICE INCLUDING SAME, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/189465
Kind Code:
A1
Abstract:
Disclosed are an electrode assembly, an electrochemical device including the electrode assembly, and an electronic device, wherein the electrode assembly comprises an electrode pole piece (1) and a fiber isolation layer (2) on at least one surface of the electrode pole piece (1). The electrode pole piece (1) and the fiber isolation layer (2) are wound to form the electrode assembly, wherein the thickness of the fiber isolation layer (2) varies with a change in thickness of the electrode pole piece (1), so that the overall thickness difference of a lithium ion battery is less than 5 μm. The pressure of a lithium ion battery can be uniformly distributed during hot-pressing formation or activation, and short-circuiting inside the lithium ion battery caused by local lithium plating of an electrode assembly can be reduced, thereby improving the safety of the lithium ion battery and an electronic device.
Inventors:
WEI HONGMEI (CN)
ZHANG YIBO (CN)
HU QIAOSHU (CN)
WANG BIN (CN)
ZHANG YIBO (CN)
HU QIAOSHU (CN)
WANG BIN (CN)
Application Number:
PCT/CN2020/081820
Publication Date:
September 30, 2021
Filing Date:
March 27, 2020
Export Citation:
Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
International Classes:
H01M10/0525
Foreign References:
| CN104124414A | 2014-10-29 | |||
| CN110165287A | 2019-08-23 | |||
| CN105449262A | 2016-03-30 | |||
| CN207368124U | 2018-05-15 |
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
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