The invention provides a lithium battery low-voltage power supply system and method for a shield electric traction locomotive, and belongs to the technical field of lithium battery systems. The lithium battery low-voltage power supply system comprises a BMS, a switch module, a starting switch, a low-voltage power supply battery, a DC/DC converter and a blocking unit, the starting switch is connected with a keyon pin of the BMS and a positive electrode of the low-voltage power supply battery, and the blocking unit is arranged between the positive electrode of the low-voltage power supply battery and a positive power supply port of the BMS. A negative power supply port of the BMS is connected with a control pin of the DC/DC converter through the switch module, and when the starting switch is closed, the low-voltage power supply battery supplies power to the switch module, so that the switch module is conducted, the control pin of the DC/DC converter is controlled to be conducted with a low level, and therefore the DC/DC converter is controlled to work and supply power to the BMS.

    本发明提供一种用于盾构电动牵引机车的锂电池低压供电系统及方法,属于锂电池系统技术领域。该锂电池低压供电系统包括BMS、开关模块、启动开关、低压供电电池、DC/DC转换器、阻隔单元,启动开关分别连接BMS的keyon引脚以及低压供电电池的正极,阻隔单元设置于低压供电电池的正极与BMS的正供电口之间,BMS的负供电口通过开关模块连接DC/DC转换器的控制引脚,当启动开关闭合时,低压供电电池给开关模块供电,使开关模块导通,以控制DC/DC转换器的控制引脚与低电平导通,从而控制DC/DC转换器工作,给BMS供电。


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    Title :

    Lithium battery low-voltage power supply system and method for shield electric traction locomotive


    Additional title:

    用于盾构电动牵引机车的锂电池低压供电系统及方法


    Contributors:
    SUN RUI (author) / TANG WEI (author) / HU MINGLIANG (author) / LUO KAIYI (author) / GAO TENGFEI (author)

    Publication date :

    2025-04-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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



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