Patents by Inventor Kieko Asakawa

Kieko Asakawa 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 pack with thermal distribution configuration
    Patent number: 7147963
    Abstract: A plurality of cells (1a to 1j) are abutted against each other and electrically connected on the short sides of rectangular battery housings (2), and binding plates (14, 14) disposed on both long sides are tied together with binding bands (13) to integrally link the cells (1a to 1j). Because the heat radiation conditions are equalized among the cells (1a to 1j), there is an extremely small temperature differential between the cells, charging efficiency, which varies with temperature conditions, is consistent, and there is no variance in battery capacity, so none of the cells are over-discharged, and battery life is extended.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: December 12, 2006
    Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Kimoto, Mitsugu Takaki, Kenji Kimura, Toshinobu Yokoyama, Shinsuke Fukuda, Yasuhiro Takahashi, Toshihiro Katsuta, Kieko Asakawa
  • Battery pack with reduced temperature differential between cells
    Patent number: 6818343
    Abstract: A plurality of cells (1a to 1j) are abutted against each other and electrically connected on the short sides of rectangular battery housings (2), and binding plates (14, 14) disposed on both long sides are tied together with binding bands (13) to integrally link the cells (1a to 1j). Because the heat radiation conditions are equalized among the cells (1a to 1j), there is an extremely small temperature differential between the cells, charging efficiency, which varies with temperature conditions, is consistent, and there is no variance in battery capacity, so none of the cells are over-discharged, and battery life is extended.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: November 16, 2004
    Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Kimoto, Mitsugu Takaki, Kenji Kimura, Toshinobu Yokoyama, Shinsuke Fukuda, Yasuhiro Takahashi, Toshihiro Katsuta, Kieko Asakawa
  • Rechargeable battery
    Publication number: 20040201366
    Abstract: A plurality of cells (1a to 1j) are abutted against each other and electrically connected on the short sides of rectangular battery housings (2), and binding plates (14, 14) disposed on both long sides are tied together with binding bands (13) to integrally link the cells (1a to 1j). Because the heat radiation conditions are equalized among the cells (1a to 1j), there is an extremely small temperature differential between the cells, charging efficiency, which varies with temperature conditions, is consistent, and there is no variance in battery capacity, so none of the cells are over-discharged, and battery life is extended.
    Type: Application
    Filed: April 28, 2004
    Publication date: October 14, 2004
    Applicants: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Kimoto, Mitsugu Takaki, Kenji Kimura, Toshinobu Yokoyama, Shinsuke Fukuda, Yasuhiro Takahashi, Toshihiro Katsuta, Kieko Asakawa