Patents by Inventor Bonnie Yip

Bonnie Yip 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).

  • Protection of parallel battery cells in a battery
    Patent number: 11637434
    Abstract: This application is directed to a battery protection system including a sense resistor, a comparator, a switching component, and a protection integrated circuit (PIC). The sense resistor is electrically coupled in series with one of a plurality of rechargeable battery cells that are coupled in parallel in a battery. The comparator is coupled to the sense resistor and configured to compare a voltage drop across the sense resistor with a reference voltage to determine whether a subset of the rechargeable battery cells is not charging in the battery. The switching component is coupled to the battery, while the PIC is coupled to the comparator and the switching component. The PIC is configured to control charging and discharging of the battery including disabling the battery from being charged in accordance with a determination that a subset of the rechargeable battery cells is not charging in the battery.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: April 25, 2023
    Assignee: Google LLC
    Inventors: James Robert Lim, David Wang, Bonnie Yip, Haoxing Zhang
  • Protection of Parallel Battery Cells in a Battery
    Publication number: 20210376625
    Abstract: This application is directed to a battery protection system including a sense resistor, a comparator, a switching component, and a protection integrated circuit (PIC). The sense resistor is electrically coupled in series with one of a plurality of rechargeable battery cells that are coupled in parallel in a battery. The comparator is coupled to the sense resistor and configured to compare a voltage drop across the sense resistor with a reference voltage to determine whether a subset of the rechargeable battery cells is not charging in the battery. The switching component is coupled to the battery, while the PIC is coupled to the comparator and the switching component. The PIC is configured to control charging and discharging of the battery including disabling the battery from being charged in accordance with a determination that a subset of the rechargeable battery cells is not charging in the battery.
    Type: Application
    Filed: April 5, 2021
    Publication date: December 2, 2021
    Applicant: Google LLC
    Inventors: James Robert Lim, David Wang, Bonnie Yip, Haoxing Zhang