Patents by Inventor Sam Weng

Sam Weng 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 and apparatus for determining the state-of-charge of a battery
    Patent number: 9885757
    Abstract: A method and apparatus for determining the state-of-charge of a battery. In response to detecting that the battery is in a rest state, a pre-conditioning current is drawn from the battery to affect a correlation between the state-of-charge of the battery and an open-circuit voltage of the battery. Thereafter, the open-circuit voltage of the battery is measured, and used to determine the state-of-charge.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 6, 2018
    Assignee: Atieva, Inc.
    Inventors: Albert Shih-Young Liu, Steven Diamond, Sam Weng
  • Interlock mechanism for a multiple battery pack
    Patent number: 8866441
    Abstract: A method for operating a battery system having multiple battery packs. The method includes decoupling the output of a discharged battery pack from the vehicle load, reducing the voltage between an output of a charged battery pack and the vehicle load prior to coupling the output of the charged battery pack to the vehicle load.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: October 21, 2014
    Assignee: ATIEVA, Inc.
    Inventors: Sam Weng, Gabriel Risk
  • Method and Apparatus for Determining the State-of-Charge of a Battery
    Publication number: 20120274331
    Abstract: A method and apparatus for determining the state-of-charge of a battery. In response to detecting that the battery is in a rest state, a pre-conditioning current is drawn from the battery to affect a correlation between the state-of-charge of the battery and an open-circuit voltage of the battery. Thereafter, the open-circuit voltage of the battery is measured, and used to determine the state-of-charge.
    Type: Application
    Filed: March 28, 2012
    Publication date: November 1, 2012
    Inventors: Albert Shih-Young Liu, Steven Diamond, Sam Weng
  • Interlock Mechanism for a Multiple Battery Pack
    Publication number: 20110111268
    Abstract: A method for operating a battery system having multiple battery packs. The method includes decoupling the output of a discharged battery pack from the vehicle load, reducing the voltage between an output of a charged battery pack and the vehicle load prior to coupling the output of the charged battery pack to the vehicle load.
    Type: Application
    Filed: November 10, 2010
    Publication date: May 12, 2011
    Inventors: Sam Weng, Gabriel Risk
  • INTELLIGENT FAULT-TOLERANT BATTERY MANAGEMENT SYSTEM
    Publication number: 20090206841
    Abstract: A battery pack monitoring system for monitoring a plurality of battery modules within a battery pack. Primary monitoring circuits are coupled to monitor respective battery modules and have circuitry to output measurement values that correspond to the respective battery modules. At least one standby monitoring circuit is coupled to monitor at least one of the battery modules and includes circuitry to output a first measurement value that corresponds to the battery module. A pack controller selectively applies, in a determination of battery pack status, either the first measurement value from the standby monitoring circuit or a second measurement value from one of the primary monitoring circuits.
    Type: Application
    Filed: February 17, 2009
    Publication date: August 20, 2009
    Inventor: Sam WENG
  • Combined printer and fax machine device
    Patent number: D370025
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: May 21, 1996
    Assignee: Stylus Assets Limited
    Inventor: Sam Weng