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:
Feb. 16, 2021
Filed:
Oct. 31, 2018
Microvast Power Systems Co., Ltd., Huzhou, CN;
Weifeng Fang, Huzhou, CN;
Xuezhong Dong, Huzhou, CN;
Qiru Li, Huzhou, CN;
Po Gao, Huzhou, CN;
Wenjuan Liu Mattis, Huzhou, CN;
MICROVAST POWER SYSTEMS CO., LTD., Huzhou, CN;
Abstract
The present disclosure provides a method for measuring an internal resistance of a battery, after discharging/charging the battery under a preset constant-current, acquiring voltages of the battery within a period from ending the discharging/charging to a time when the voltage reaches stable, and then calculating different corresponding internal resistances caused by ohmic polarization, electrochemical polarization and concentration polarization separately. Since it is different for the orders of the magnitude of the characteristic time which these different polarizations need to get back into new equilibrium state after ending the discharging/charging, the method of the present disclosure classifies the internal resistances caused by these polarizations and calculated different internal resistances corresponding to the polarizations. Both the comparison with a result measured by other method and multiple embodiments in the application justify that the method in the present disclosure has high reliability and strong practicability.