HEV (hybrid electric vehicle) batteries require higher current output than the batteries for general consumer use. A maximum output requirement is generally 100 A - 150 A. With their accumulated technologies, the authors have developed a nickel-metal hydride (Ni-MH) battery (D-size model :HR-DP) which meets the requirement of higher output. The authors announced their new battery at the 33rd Tokyo Motor Show 1999. With the use of a lower resistance collector, battery has been improved which enabled to lower the internal resistance. The authors have succeeded in assuring a current output 2.5 times as much as that of the consumer-use D-size battery. The optimization of the positive electrode has also improved charging characteristics at a high temperature and the improvement of the hydrogen absorbing alloy has improved cycle life. The ISG (Integrated Starter Generator) requires higher current than the HEV use, where a maximum requirement is from 300 A to 500 A. To meet with these high current requirements, the authors are currently under the development of M-size battery (model: HR-MP). In this paper, the authors discuss various improvements of the characteristics of the Ni-MH battery (HRDP) for the HEV use, with more emphasis on output improvement, high temperature charging efficiency and prolonged cycle life. Some aspects of the Ni-MH battery (HR-MP) for the ISG use are also discussed.


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    Titel :

    Development of high performance nickel-metal hydride batteries for hybrid electric vehicles


    Weitere Titelangaben:

    Entwicklung von Nickel-Metallhydrid-Batterien hoher Leistung für Hybrid-Elektrofahrzeuge


    Beteiligte:
    Yano, Y. (Autor:in) / Nakahori, S. (Autor:in) / Ikemachi, T. (Autor:in) / Yonezu, I. (Autor:in) / Toya, S. (Autor:in) / Ishikura, Y. (Autor:in)


    Erscheinungsdatum :

    2001


    Format / Umfang :

    8 Seiten, 5 Bilder, 1 Tabelle


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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