Title:
STORAGE BATTERY POLE GROUP COATING FILM AND PREPARATION METHOD THEREFOR, AND STORAGE BATTERY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/226340
Kind Code:
A1
Abstract:
Disclosed in the present invention are a storage battery pole group coating film and a preparation method therefor, and a storage battery and a preparation method therefor. The storage battery pole group coating film comprises a raw material layer and a glue-coated layer. The raw material layer comprises, in percentages by mass: 60-75% of wood pulp fibers, 10-15% of tencel fibers, 10-15% of hemp pulp fibers, polyvinyl alcohol and polyoxyethylene, wherein the total mass percentage of the polyvinyl alcohol and the polyoxyethylene is 1-3%, the mass ratio of the polyvinyl alcohol to the polyoxyethylene is 1:1-5. The glue-coated layer comprises carboxymethyl cellulose, hydroxypropyl cellulose and gelatin, wherein the total mass percentage of the carboxymethyl cellulose, the hydroxypropyl cellulose and the gelatin is 4.5-12%, and the mass ratio between the carboxymethyl cellulose, the hydroxypropyl cellulose and the gelatin is 1:3-5:5-18. During the formation process of a battery comprising the storage battery pole group coating film, the coating film is dissolved away, and is gradually decomposed after the battery is used.
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Inventors:
YAO QIUSHI (CN)
ZHANG TIANREN (CN)
ZHANG HAO (CN)
CHEN KEJU (CN)
WANG WENWEN (CN)
YANG ZELONG (CN)
ZHOU XIANJI (CN)
LI JINXING (CN)
ZHANG TIANREN (CN)
ZHANG HAO (CN)
CHEN KEJU (CN)
WANG WENWEN (CN)
YANG ZELONG (CN)
ZHOU XIANJI (CN)
LI JINXING (CN)
Application Number:
PCT/CN2022/134471
Publication Date:
November 30, 2023
Filing Date:
November 25, 2022
Export Citation:
Assignee:
TIANNENG BATTERY GROUP CO LTD (CN)
International Classes:
H01M10/12
Foreign References:
| CN114976290A | 2022-08-30 | |||
| CN1373253A | 2002-10-09 | |||
| CN104893221A | 2015-09-09 | |||
| CN105907104A | 2016-08-31 | |||
| US20050281967A1 | 2005-12-22 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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