Toyota Motor Corporation has developed the next generation Prius, which reflects our continuous environmental effort. For the new Prius, the authors have developed a new Ni-MH battery that plays an important role in the Toyota Hybrid System. With this new battery, they have realized further downsizing, weight and cost reduction as well as improvement of its usability, foreseeing a full-scale popularization of hybrid vehicles in the future. By improving the electrode and cell-to-cell connection structure, the internal resistance was lowered, and a higher output power from the battery module was achieved. This allowed us to reduce the number of battery modules without any effect on output performance. The volume and weight of the battery pack was reduced by approximately 15% and 25% respectively. With the new Prius, the input/output current has increased due to the downsizing of the battery. This results in increasing of heat generation in the battery. In order to cope with this issue, both battery configuration and battery cooling structure have been redesigned. This allowed the authors to enhance the cooling performance and reduce the temperature variation between modules. Furthermore, the accuracy of the SOC estimation can be improved by optimizing the battery control system, so that the authors can cope with the expansion of the SOC range caused by the downsizing of the battery.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Development of a new battery system for hybrid vehicles


    Additional title:

    Entwicklung eines neuen Batteriesystems für Hybridfahrzeuge


    Contributors:
    Nagata, S. (author) / Umeyama, H. (author) / Kikuchi, Y. (author) / Yamashita, H. (author)


    Publication date :

    2003


    Size :

    6 Seiten, 9 Bilder, 1 Tabelle, 2 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




    Development of new battery system for hybrid vehicles

    Hayashi, Tsuyoshi / Ito, Masanori / Ishishita, Teruo et al. | Tema Archive | 2005


    Development of a new battery system for hybrid vehicles

    Yamauchi, T. / Yoneda, S. / Kikuchi, Y. et al. | Tema Archive | 2000


    Hybrid battery system for electric vehicles

    SONG YEONG KIL | European Patent Office | 2017

    Free access

    Development Status of a Flywheel Battery for Hybrid Vehicles

    Kawaguchi, K. | British Library Online Contents | 2006


    ACCUMULATOR BATTERY CHARGING SYSTEM FOR HYBRID VEHICLES

    POTTER MIKHEL | European Patent Office | 2015

    Free access