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Title:
BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/072110
Kind Code:
A1
Abstract:
Disclosed in the present disclosure is a battery. The battery comprises a positive electrode plate, a negative electrode plate, a separator, and a non-aqueous electrolyte; the non-aqueous electrolyte comprises a non-aqueous organic solvent and an additive; the non-aqueous organic solvent at least comprises ethyl propionate; the additive comprises 1,3-propanesultone and lithium difluoro(oxalato)borate; the separator comprises a substrate, a heat-resistant layer, and a gluing layer; the heat-resistant layer is oppositely arranged on the two surfaces of the substrate, and the gluing layer is arranged on the heat-resistant layer; and a ratio of the percentage by mass of ethyl propionate in the non-aqueous electrolyte to the percentage by mass of HFP in a hexafluoropropylene-vinylidene fluoride copolymer in an adhesive of the gluing layer is 0.2-60. According to the present invention, the battery is manufactured by means of the synergistic effect of the separator and the electrolyte after a positive electrode material and a negative electrode material are used in combination, and thus, the cycle service life of the battery can be effectively prolonged, the cycle expansion of the battery can further be effectively reduced, and the low-temperature performance of the battery is considered.

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Inventors:
MU YINGDI (CN)
ZHANG ZULAI (CN)
WANG HAI (CN)
LI SULI (CN)
Application Number:
PCT/CN2022/127500
Publication Date:
May 04, 2023
Filing Date:
October 25, 2022
Export Citation:
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Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M10/0569; H01M10/0525; H01M10/0567; H01M10/42; H01M50/457; H01M50/489
Foreign References:
CN114024035A2022-02-08
CN112467209A2021-03-09
CN110635133A2019-12-31
CN112635824A2021-04-09
CN106099171A2016-11-09
CN105449279A2016-03-30
Other References:
WEN, JIANXUN ET AL.: "Research and Development of Fluorine-containing Materials", EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY PRESS, 30 June 2006 (2006-06-30), XP009545785
Attorney, Agent or Firm:
BEIJING BRIGHT IP AGENCY CO., LTD. (CN)
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