A high-voltage electrical system includes a high-voltage electrical bus, a low-voltage controller performing battery management system (BMS) functions, and a rechargeable energy storage system (RESS) connected to the HV electrical bus. The RESS has contactors connected to the voltage rails, a battery pack, a current sensor outputting a voltage signal indicative of pack current, cell monitoring units (CMUs) connected to designated battery cells that measure corresponding cell voltages, and voltage isolation hardware between the CMUs and the LV controller. The voltage isolation hardware includes the contactors and may include a transformer. The RESS and LV controller are connected via LV serial connections such that the LV controller performs the designated BMS functions, including monitoring the pack current and controlling an open/closed state of the contactors. A powertrain system includes the electrical system, an electric machine, and a coupled load.


    Access

    Download


    Export, share and cite



    Title :

    High-voltage system with low-voltage control architecture and method


    Contributors:
    WANG FANG (author) / JOHNSON JEFFREY (author) / KIM THEODORE T (author) / WANG TAO (author) / BASI JANPREET S (author)

    Publication date :

    2021-04-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    HIGH VOLTAGE BATTERY ARCHITECTURE

    FRIHAUF PAUL / POOPALARAJAH SAI / OSTROW ALEXANDER STEPHEN et al. | European Patent Office | 2024

    Free access

    High-voltage architecture new energy automobile system and control method

    YAN QUANZHONG / ZHANG LIANXIN / JIANG YUNBAO | European Patent Office | 2023

    Free access

    High-voltage architecture system and vehicle

    XU BIN / YAN ZHAOBIN | European Patent Office | 2024

    Free access

    High-voltage accessory system of P2 architecture vehicle and control method

    ZHOU ZAIFANG / ZHAI XIAOYAN / ZHAO HONGSHA | European Patent Office | 2023

    Free access

    High-voltage relay control system, high-voltage output control method and automobile

    DENG ZHONGQING / HU ZHENGNAN / GUAN BICONG et al. | European Patent Office | 2021

    Free access