The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2026
Filed:
Oct. 17, 2023
Eve Power Co., Ltd., Jingmen, CN;
Hao Cheng, Jingmen, CN;
Xiaohan Deng, Jingmen, CN;
Xiaokun Wang, Jingmen, CN;
Haitao Wei, Jingmen, CN;
EVE POWER CO., LTD., Jingmen, CN;
Abstract
Provided in the present application is a negative pressure formation method for lithium iron manganese phosphate batteries and batteries applying the same. The method includes following steps: performing a vacuumizing process, a resting process and a charging process for a semi-finished battery cell to obtain a post-formation battery cell; the charging process is a three-stage constant-current charging process, wherein in the three-stage constant-current charging process, a charging current I, and a state of charge S are required to satisfy following relations: in a first stage constant-current charging process, I≤0.1 C, state of charge: 5%≤S≤15%; in a second stage constant-current charging process, 0.05 C≤I≤0.15 C, state of charge: 15%≤S≤25%; and in a third stage constant-current charging process, 0.15 C≤I≤0.25 C, state of charge: 35%≤S≤45%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile