Patents by Inventor Yusuke KOZUKA

Yusuke KOZUKA 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).

  • Battery voltage measurement circuit
    Patent number: 10444293
    Abstract: A battery voltage measurement circuit measures voltages at a plurality of rechargeable batteries. The rechargeable batteries are connected to a flying capacitor via input-side semiconductor switches. The capacitor is connected to inverting input terminals of first and second differential amplification circuits. Output terminals of the differential amplification circuits are directly or indirectly connected to a calculation unit that calculates voltages at the rechargeable batteries. The output terminal and the inverting input terminal of each differential amplification circuit are connected via a corresponding sub-capacitor. Each differential amplification circuit includes a non-inverting input terminal connected to a reference potential. The negative electrode of the rechargeable battery is connected to the reference potential via a leakage detection circuit.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: October 15, 2019
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Yusuke Kozuka, Mitsuhiro Kamo
  • BATTERY VOLTAGE MEASUREMENT CIRCUIT
    Publication number: 20170299658
    Abstract: A battery voltage measurement circuit measures voltages at a plurality of rechargeable batteries. The rechargeable batteries are connected to a flying capacitor via input-side semiconductor switches. The capacitor is connected to inverting input terminals of first and second differential amplification circuits. Output terminals of the differential amplification circuits are directly or indirectly connected to a calculation unit that calculates voltages at the rechargeable batteries. The output terminal and the inverting input terminal of each differential amplification circuit are connected via a corresponding sub-capacitor. Each differential amplification circuit includes a non-inverting input terminal connected to a reference potential. The negative electrode of the rechargeable battery is connected to the reference potential via a leakage detection circuit.
    Type: Application
    Filed: March 11, 2015
    Publication date: October 19, 2017
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Yusuke KOZUKA, Mitsuhiro KAMO