Patents by Inventor Shih-xiang Liu

Shih-xiang Liu 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).

  • System for transferring control of charge current
    Patent number: 10090682
    Abstract: The invention is directed to a system for controlling battery current. In some embodiments, the system comprises a first lithium-ion (Li-ion) battery, the first battery having a first state-of-charge (SOC) and comprising a first battery controller and a first battery charger; and a second Li-ion battery in series with the first battery, the second battery having a second SOC and comprising a second battery controller and a second battery charger. In some embodiments, at least one of the first battery controller or the second battery controller controls a charge current flowing through at least one of the first battery and the second battery, wherein control of the charge current is transferred from the first battery to the second battery based at least partially on whether an overhead voltage is present across the first battery charger or the second battery charger.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: October 2, 2018
    Assignee: SAFT AMERICA, INC.
    Inventors: James G. Snyder, Benjamin L. Foote, Keith W. Hensley, Shih-xiang Liu
  • BATTERY ELECTRONICS AND CONTROL SYSTEM
    Publication number: 20150180257
    Abstract: The invention is directed to a system for controlling battery current. In some embodiments, the system comprises a first lithium-ion (Li-ion) battery, the first battery having a first state-of-charge (SOC) and comprising a first battery controller and a first battery charger; and a second Li-ion battery in series with the first battery, the second battery having a second SOC and comprising a second battery controller and a second battery charger. In some embodiments, at least one of the first battery controller or the second battery controller controls a charge current flowing through at least one of the first battery and the second battery, wherein control of the charge current is transferred from the first battery to the second battery based at least partially on whether an overhead voltage is present across the first battery charger or the second battery charger.
    Type: Application
    Filed: June 20, 2013
    Publication date: June 25, 2015
    Inventors: James G. Snyder, Benjamin L. Foote, Keith W. Hensley, Shih-xiang Liu