The invention relates to the field of automobile power batteries, and provides a power battery, a maintenance protection device thereof and a vehicle. The power battery provided by the invention comprises a shell, a storage battery pack, a relay set, a battery management system BMS, a high-voltage power supply port and a low-voltage charging port, wherein the storage battery pack, the relay set and the battery management system BMS are arranged in the shell, the high-voltage power supply port and the low-voltage charging port are formed in the outer side surface of the shell, the relay set isconnected between the storage battery set and the high-voltage power supply port, and the relay set is provided with a control coil of which one end is connected with the BMS and the other end is grounded; the control coil is further connected with a safety switch arranged outside the shell, and the control coil is disconnected under the control of the safety switch. According to the invention, anMSD switch is canceled, and a high-voltage power-off state during vehicle maintenance can be realized with low cost and high reliability.

    本发明涉及汽车动力电池领域,提供一种动力电池及其维修保护装置、车辆。本发明所述的动力电池包括:壳体;以及设置在所述壳体内的蓄电池组、继电器组和电池管理系统BMS以及设置在所述壳体外侧面上的高压供电端口和低压充电端口,所述继电器组连接在所述蓄电池组与所述高压供电端口之间,且所述继电器组具有一端连接所述BMS、另一端接地的控制线圈;其中,所述控制线圈还与布置在所述壳体外的安全开关连接,并在所述安全开关的控制下断开。本发明取消了MSD开关,可以低成本、高可靠性的实现车辆维修时的高压断电状态。


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    Title :

    Power battery, maintenance protection device thereof and vehicle


    Additional title:

    动力电池及其维修保护装置、车辆


    Contributors:
    GUO TENGFEI (author) / LIU XIU (author) / LI YAN (author) / WENG HAOYU (author)

    Publication date :

    2020-07-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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