Patents by Inventor Ruri TANAKA

Ruri TANAKA 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).

  • Publication number: 20210011087
    Abstract: A power storage device inspecting method of inspecting a power storage device for an internal short circuit includes: detecting an external resistance Re which is generated in an external circuit in a state in which probes of an external power supply are connected to external terminals of the power storage device; applying an initial output voltage VS(0) with which an initial device current IB(0) of a device current IB(t) is zero; applying an output voltage VS(t) expressed by Equation (1) from the external power supply to the power storage device; and determining an internal short circuit of the power storage device based on a change with time of the device current IB(t) or a stabilized device current IBs. VS(t)=VS(0)+(Re?Ro1)·IB(t)??(1) Here, a first virtual external resistance Ro1 is a constant satisfying 0<Ro1<Re.
    Type: Application
    Filed: April 20, 2020
    Publication date: January 14, 2021
    Inventors: Kiwamu KOBAYASHI, Takeshi GOTO, Naotaka IDE, Ruri TANAKA