A motor controller 21 has a driving system diagnostic unit 21 a. A battery management controller 32 receives information indicating abnormality of a driving system 20 from the motor controller 21. An indicator 41 of a battery unit 30 indicates a remaining power of a battery 31 and the abnormality of the driving system 20. In this case, it is possible for an occupant to prevent erroneous recognition that an assist force of the electric motor is decreased due to the remaining power of the battery becoming zero when the assist force of the electric motor is decreased due to abnormality of the driving system.


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    Title :

    ELECTRIC ASSIST BICYCLE


    Additional title:

    FAHRRAD MIT ELEKTRISCHER UNTERSTÜTZUNG
    VÉLO À ASSISTANCE ÉLECTRIQUE


    Contributors:

    Publication date :

    2020-09-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen