Title:
LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/119431
Kind Code:
A1
Abstract:
Disclosed are a lithium ion battery and a preparation method therefor. The lithium ion battery comprises a positive plate and a negative plate. The positive plate comprises a positive current collector and a positive active substance layer located on at least one surface of the positive current collector. The negative plate comprises a negative current collector and a negative active substance layer located on at least one surface of the negative current collector. An adhesive in the positive active substance layer is uniformly distributed in the thickness direction of the active substance layer, and an adhesive in the negative active substance layer is uniformly distributed in the thickness direction of the active substance layer. The adhesive is pre-wrapped on the surface of an active substance, and then the active substance wrapped by the adhesive is coated to prepare an electrode, so that the adhesive can be prevented from floating along with solvent evaporation, and the power and circulation are improved. By applying the lithium ion battery to a high-unit-area active substance weight system, the deterioration of the power and the circulation that is caused by the thickening of the plates can be effectively improved.
Inventors:
GUO MINGKUI (CN)
WANG YAOHUI (CN)
HUANG YAPING (CN)
WANG YAOHUI (CN)
HUANG YAPING (CN)
Application Number:
PCT/CN2019/120541
Publication Date:
June 18, 2020
Filing Date:
November 25, 2019
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/66
Foreign References:
| CN103891028A | 2014-06-25 | |||
| CN105144458A | 2015-12-09 | |||
| CN108844878A | 2018-11-20 | |||
| CN107394116A | 2017-11-24 | |||
| CN107039679A | 2017-08-11 |
Other References:
See also references of EP 3896763A4
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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