Patents by Inventor Chang-Fu Hsia

Chang-Fu Hsia 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).

  • Voltage-stacked system for managing stacked voltage sources by using multiple monitoring circuits
    Patent number: 9389251
    Abstract: A voltage-stacked system includes a first voltage source, at least one second voltage source, a master monitoring circuit and at least one slave monitoring circuit. The first voltage source and the at least one second voltage source are coupled in series. The master monitoring circuit is coupled to the first voltage source, and arranged for monitoring and controlling the first voltage source and transmitting a monitoring signal. The at least one slave monitoring circuit is respectively coupled to the at least one second voltage source and the master monitoring circuit for monitoring and controlling the at least one second voltage source, and accordingly sending a response signal to the master monitoring circuit.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: July 12, 2016
    Assignee: POWERFLASH TECHNOLOGY CORPORATION
    Inventors: Chun-Ming Chen, Chang-Fu Hsia, Sheng-An Yang, Yuan-Chi Ho
  • VOLTAGE-STACKED SYSTEM FOR MANAGING STACKED VOLTAGE SOURCES BY USING MULTIPLE MONITORING CIRCUITS
    Publication number: 20140368040
    Abstract: A voltage-stacked system includes a first voltage source, at least one second voltage source, a master monitoring circuit and at least one slave monitoring circuit. The first voltage source and the at least one second voltage source are coupled in series. The master monitoring circuit is coupled to the first voltage source, and arranged for monitoring and controlling the first voltage source and transmitting a monitoring signal. The at least one slave monitoring circuit is respectively coupled to the at least one second voltage source and the master monitoring circuit for monitoring and controlling the at least one second voltage source, and accordingly sending a response signal to the master monitoring circuit.
    Type: Application
    Filed: October 18, 2013
    Publication date: December 18, 2014
    Applicant: POWERFLASH TECHNOLOGY CORPORATION
    Inventors: Chun-Ming Chen, Chang-Fu Hsia, Sheng-An Yang, Yuan-Chi Ho
  • METHOD OF CONTROLLING THE POWER STATUS OF A BATTERY PACK AND RELATED SMART BATTERY DEVICE
    Publication number: 20130147433
    Abstract: In a smart battery device, a battery pack having a plurality of battery cells is provided. During charging, if the voltage of each battery cell does not exceed the maximum operational voltage associated with individual battery cell, the battery pack is charged by a first voltage. If the voltage of any battery cell is not smaller than the maximum operational voltage associated with individual battery cell, the battery pack is charged by a second voltage smaller than the first voltage.
    Type: Application
    Filed: March 13, 2012
    Publication date: June 13, 2013
    Applicant: POWERFLASH TECHNOLOGY CORPORATION
    Inventors: Chun-Ming Chen, Chang-Fu Hsia