Title:
ANTI-SHORT-CIRCUIT SOLID-STATE BATTERY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/045688
Kind Code:
A1
Abstract:
Provided in the present invention is an anti-short-circuit solid-state battery. The battery comprises several battery cells, each of which is composed of a positive electrode sheet, an insulating ring, a solid-state electrolyte layer and a negative electrode sheet, wherein the positive electrode sheet comprises a positive current collector and a positive coating layer; the negative electrode sheet comprises a negative current collector and a negative coating layer; the length * width * height dimension of an inner ring of the insulating ring is the same as the length * width * height dimension of the positive coating layer; the insulating ring is arranged on the edge of the positive electrode sheet and around the positive electrode sheet, and completely encloses the positive coating layer; and the solid-state electrolyte layer is arranged between the side of the positive electrode sheet on which the positive coating layer is provided and the side of the negative electrode sheet on which the negative coating layer is provided. In the present invention, for a solid battery, when lamination is performed, an insulating ring is placed in an empty foil region of a positive electrode sheet to fill a gap between the positive electrode sheet and a solid-state electrolyte layer, such that a negative electrode is prevented from being damaged when pressure is applied to a battery cell; the insulating ring bonds the positive electrode sheet to the solid-state electrolyte layer, thereby preventing misplacement of the electrode sheet; the insulating ring achieves the effect of insulation; and the insulating ring surrounds the electrode sheet, and can thus achieve the effect of fire retardation.
Inventors:
ZHAI XIMIN (CN)
GAO TIANYI (CN)
JIANG TAO (CN)
BIE XIAOFEI (CN)
HU JINGBO (CN)
YAN SHENGRUI (CN)
ZHAO GUANGYU (CN)
YANG HEJIE (CN)
GAO TIANYI (CN)
JIANG TAO (CN)
BIE XIAOFEI (CN)
HU JINGBO (CN)
YAN SHENGRUI (CN)
ZHAO GUANGYU (CN)
YANG HEJIE (CN)
Application Number:
PCT/CN2023/093052
Publication Date:
March 07, 2024
Filing Date:
May 09, 2023
Export Citation:
Assignee:
CHINA FAW CO LTD (CN)
International Classes:
H01M10/058; H01M10/052; H01M50/586; H01M50/593
Foreign References:
| CN115513532A | 2022-12-23 | |||
| CN114430072A | 2022-05-03 | |||
| CN217426818U | 2022-09-13 | |||
| JP2022104123A | 2022-07-08 | |||
| KR20200064752A | 2020-06-08 | |||
| CN114843620A | 2022-08-02 |
Attorney, Agent or Firm:
BEIJING XIANGYU PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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