To improve the service quality of its electric vehicle (EV) fleet ( approximately=500 vehicles) and master the behaviour of the valve regulated lead/acid (VRLA) batteries, which power the major part of it, Electricite de France (EDF) has developed an onboard battery management system. Information on the operating battery behaviour is given to the driver. Overdischarges can then be avoided. Rapid charging of VRLA batteries is monitored. The main available functions of this device are: (i) battery life recording, short- and long-term information storage is available; (ii) charge monitoring, communication with a 23 kW charger is established through an ISO 9141 interface; a fast-charging algorithm for VRLA batteries has been developed and up to 50% of the range can be returned to the EV in 20 min; (iii) battery management during driving,'orange' and 'red' alarms related to the depth-of-discharge help the driver. To manage the driving; cell overdischarges can then be avoided; (iv) maintenance, the faulty groups of cells are identified; and (v) gauge (state-of-charge indicator), this function requires mid-term R and D; for the moment, only charged and discharged Ah are indicated but when more accurate state-of-charge prediction algorithms are available, the software will be up-graded


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Development of an on-board charge and discharge management system for electric-vehicle batteries


    Weitere Titelangaben:

    Entwicklung eines An-Bord-Lade-und-Entlade-Managementsystems für Elektrofahrzeugbatterien


    Beteiligte:
    Alzieu, J. (Autor:in) / Gagnol, P. (Autor:in) / Smimite, H. (Autor:in)


    Erscheinungsdatum :

    1995


    Format / Umfang :

    7 Seiten, 6 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    ELECTRIC VEHICLE, CHARGE/DISCHARGE EQUIPMENT, CHARGE/DISCHARGE MANAGEMENT SYSTEM, AND PROGRAM

    SAKATA HIDEKI / ASAKURA ATSUSHI / YAMAUCHI YUTAKA et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    ELECTRIC VEHICLE BATTERY CHARGE AND DISCHARGE MANAGEMENT

    ALSER JOHN / CHIDESTER DOUGLAS D / PARYANI ANIL et al. | Europäisches Patentamt | 2017

    Freier Zugriff

    SYSTEM TO CHARGE ELECTRIC VEHICLE BATTERIES

    SESHADRI SATHYANARAYANA MYSORE | Europäisches Patentamt | 2019

    Freier Zugriff

    State-of-Charge Estimation for Improving Management of Electric Vehicle Lead-Acid Batteries during Charge and Discharge

    Ceraolo, M. / Giglioli, R. / Pede, G. et al. | British Library Conference Proceedings | 1996