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. 17, 2017
Filed:
Jul. 27, 2015
Dongguan Amperex Technology Limited, Dongguan, CN;
Fuping Luo, Dongguan, CN;
Yu Luo, Dongguan, CN;
Shengwei Wang, Dongguan, CN;
Chao Gao, Dongguan, CN;
Qiang Zheng, Dongguan, CN;
Dongguan Amperex Technology Limited, Guangdong Province, CN;
Abstract
The present invention provides a fast charging method for battery, including the steps as follows: (1) the battery is charged with a constant current Iand the charging time is t; (2) the battery is charged with a constant current Iand the charging time is t; (3) the battery is discharged with the constant current Iand the discharging time is t, recycling until the voltage reaches a pre-charging voltage of battery; (4) the battery is standed after the voltage reaching the pre-charging voltage of battery, and the rest time is t, and then the battery is charged with a constant current Iuntil the voltage reaching a cut-off voltage of battery, and then the battery is charged with a constant voltage until the current reaching a cut-off current I; wherein, I<I, t<t, t<t, I<I≦I, I≦I. The fast charging method provided in present invention can decrease the polarization in pulse charging phase, increase the time of whole pulse charging phase, improve the charging speed in pulse charging phase, and thus shorten the full-charging time.