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:
Dec. 25, 2018
Filed:
Feb. 22, 2017
Dongguan Amperex Technology Limited, Dongguan, Guangdong, CN;
Ningde Amperex Technology Limited, Ningde, Fujian, CN;
Dongguan Amperex Technology Limited, Dongguan, CN;
Ningde Amperex Technology Limited, Ningde, CN;
Abstract
A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current Iand a lowest anode potential η of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of Iwhich is greater than Ifor a charging time t; 3) discharging the lithium ion battery at a constant current of Iwhich is less than Ifor a discharging time t, 5≤t/t≤50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches Vand standing the lithium ion battery for a standing time t; and 5) charging the lithium ion battery at a constant current of Iuntil the cutoff voltage of the lithium ion battery reaches Vand charging the lithium ion battery to a cutoff current of Iat a constant voltage.