Patents by Inventor Shinji Fujihara

Shinji Fujihara 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 charging state arithmetic operation device for calculating charging state of battery, and battery charging state arithmetic operation method
    Patent number: 7323848
    Abstract: In order to provide a battery charging state arithmetic operation device which can judge a charging state of a battery currently being used easily and in a short time, there are provided battery voltage calculation means 6 with specified load for calculating a first and a second battery voltages when a battery current is at a specified load current value from a first I-V characteristic of the battery which is in a first state as a currently used state and is stored in first I-V characteristic storage means 3 and a second I-V characteristic which is in a second state where the amount of remaining energy is small and is stored in second I-V characteristic storage means 4, and SOC arithmetic operation means 7 for calculating an SOC (charging state) of the battery in the first state by using the first and the second battery voltages calculated.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: January 29, 2008
    Assignees: Japan Storage Battery Co., Ltd., Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shinji Fujihara, Kiyoharu Anzai, Motoshi Kiribayashi, Makoto Wanezaki, Hideji Nakamura, Toshiaki Hayashi
  • Battery charged condition computing device and battery charged condition computing method
    Publication number: 20060055374
    Abstract: In order to provide a battery charging state arithmetic operation device which can judge a charging state of a battery currently being used easily and in a short time, there are provided battery voltage calculation means 6 with specified load for calculating a first and a second battery voltages when a battery current is at a specified load current value from a first I-V characteristic of the battery which is in a first state as a currently used state and is stored in first I-V characteristic storage means 3 and a second I-V characteristic which is in a second state where the amount of remaining energy is small and is stored in second I-V characteristic storage means 4, and SOC arithmetic operation means 7 for calculating an SOC (charging state) of the battery in the first state by using the first and the second battery voltages calculated.
    Type: Application
    Filed: December 11, 2003
    Publication date: March 16, 2006
    Inventors: Shinji Fujihara, Kiyoharu Anzai, Motoshi Kiribayashi, Makoto Wanezaki, Hideji Nakamura, Toshiaki Hayashi