Patents by Inventor XUEZHONG DONG

XUEZHONG DONG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for measuring the internal resistance of batteries
    Patent number: 10921380
    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.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 16, 2021
    Assignee: MICROVAST POWER SYSTEMS CO., LTD.
    Inventors: Weifeng Fang, Xuezhong Dong, Qiru Li, Po Gao, Wenjuan Liu Mattis
  • METHOD FOR MEASURING THE INTERNAL RESISTANCE OF BATTERIES
    Publication number: 20190128969
    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.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: WEIFENG FANG, XUEZHONG DONG, QIRU LI, PO GAO, WENJUAN LIU MATTIS