The invention provides an active discharge circuit, system and strategy for a hydrogen energy vehicle, and the circuit comprises a power supply module, a PDU high-voltage power distribution and pre-charging module and a pre-charging capacitor module, and the power supply module, the PDU high-voltage power distribution and pre-charging module and the pre-charging capacitor module are sequentially connected in series to form a discharge loop. The power supply module comprises a power supply contactor, a first power battery and a second power battery which are connected in series, the first power battery and the second power battery provide energy for the fuel cell automobile, and the power supply contactor is used for turning off a circuit. Energy contained in the pre-charging capacitor is output to the automobile storage battery through the step-down DC, discharging of the electric quantity of the pre-charging capacitor is achieved. Meanwhile, the electric quantity of the capacitor is stored in the automobile storage battery, and the risk that the automobile rises due to energy waste and motor rotation is avoided.

    本发明提供了一种氢能汽车主动放电电路、系统及策略,包括电源模块、PDU高压配电及预充模块和预充电容模块,所述电源模块、PDU高压配电及预充模块和预充电容模块依次串联组成放电回路;所述电源模块包括串联连接的电源接触器、第一动力电池和第二动力电池,所述第一动力电池和所述第二动力电池为燃料电池汽车提供能量,所述电源接触器用于关断电路。本发明利用降压DC将预充电容所含的能量输出给汽车蓄电池,既实现了预充电容电量的泄放,同时也将电容的电量存储到汽车蓄电池中,避免了能量的浪费和电机转动造成的车辆耸动的风险。


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    Title :

    Active discharge circuit, system and strategy for hydrogen energy automobile


    Additional title:

    一种氢能汽车主动放电电路、系统及策略


    Contributors:
    CHENG FEI (author) / HAO YIGUO (author)

    Publication date :

    2021-09-03


    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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