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:
Jan. 27, 2026
Filed:
Aug. 30, 2022
America National Power Storage Llc, Lewes, DE (US);
Tengfei Zhai, Xi'an, CN;
Zhengjun Lei, Xi'an, CN;
Sanxue Zhang, Xi'an, CN;
Gaofeng Zheng, Xi'an, CN;
Yi Liu, Xi'an, CN;
AMERICA NATIONAL POWER STORAGE LLC, Lewes, DE (US);
Abstract
Disclosed are a high-capacity battery manufacturing method and a high-capacity battery, which mainly solve the problems of poor consistency, unstable performance and poor overall working performance of existing high-capacity lithium batteries. The method comprises: assembling coiled or laminated units that make up high-capacity battery cells into battery cells individually, carrying out formation and capacity grading of the battery cells, grouping the battery cells according to one or more of their capacity, internal resistance, voltage and self-discharge, connecting the battery cells in the same group in shunt, loading the battery cells in the same group into a high-capacity battery pack, and then carrying out secondary electrolyte injection, sealing, aging and capacity grading of the high-capacity battery pack. According to the present application, battery cell formation and capacity grading are carried out after primary electrolyte injection.