Patents by Inventor Tatsuo NISHINA

Tatsuo NISHINA 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).

  • Diagnostic device for degradation of rechargeable Li-ion battery
    Patent number: 9529050
    Abstract: A diagnostic device which can measure quickly and has simple circuit is provided. A charge/discharge circuit 2 supplies charge current to a rechargeable battery 10 and discharges the rechargeable battery 10. The charge/discharge circuit 2 also breaks charge current or discharge current of the rechargeable battery 10 in charging or discharging. A voltage measurement part 6 measures terminal voltage of the rechargeable battery 10 after breaking the charge or discharge current. Diagnostic means 8 judges whether the rechargeable battery 10 is deteriorated or not based on the measured voltages. Voltage change of deteriorated rechargeable battery 10 after breaking the charge or discharge current is more rapid than that of healthy rechargeable battery 10. The diagnostic means 8 can judge whether the rechargeable battery 10 is deteriorated or not based on such voltage change.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 27, 2016
    Assignee: IMV CORPORATION
    Inventors: Takao Kawahira, Yasuhiro Uchiyama, Jumpei Kojima, Toru Katsurai, Koji Kawata, Toshiyuki Kobayashi, Tatsuo Nishina
  • DIAGNOSTIC DEVICE FOR DEGRADATION OF RECHARGEABLE LI-ION BATTERY
    Publication number: 20130342212
    Abstract: A diagnostic device which can measure quickly and has simple circuit is provided. A charge/discharge circuit 2 supplies charge current to a rechargeable battery 10 and discharges the rechargeable battery 10. The charge/discharge circuit 2 also breaks charge current or discharge current of the rechargeable battery 10 in charging or discharging. A voltage measurement part 6 measures terminal voltage of the rechargeable battery 10 after breaking the charge or discharge current. Diagnostic means 8 judges whether the rechargeable battery 10 is deteriorated or not based on the measured voltages. Voltage change of deteriorated rechargeable battery 10 after breaking the charge or discharge current is more rapid than that of healthy rechargeable battery 10. The diagnostic means 8 can judge whether the rechargeable battery 10 is deteriorated or not based on such voltage change.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 26, 2013
    Applicant: IMV CORPORATION
    Inventors: Takao KAWAHIRA, Yasuhiro UCHIYAMA, Jumpei KOJIMA, Toru KATSURAI, Koji KAWATA, Toshiyuki KOBAYASHI, Tatsuo NISHINA