The invention discloses a power supply system of an extended-range vehicle and a control method of the power supply system. The system comprises a high-voltage power supply device, a low-voltage powersupply device and a bidirectional inverter; one end of the bidirectional inverter is connected with the high-voltage power supply device, and the other end of the bidirectional inverter is connectedwith the low-voltage power supply device; and the voltage of the high-voltage power supply device can be supplied to the low-voltage power supply device just through the bidirectional inverter when the voltage of the low-voltage power supply device is too low. And when the voltage of the high-voltage power supply device is too low, the voltage of the low-voltage power supply device can be suppliedto the high-voltage power supply device. Excess electric energy of the high-voltage power supply device is stored in the low-voltage power supply device through the bidirectional inverter and supplied to the high-voltage power supply device under the condition that the high-voltage power supply device breaks down, and the problems of voltage fluctuation and the failure of a high-voltage load to work normally due to the fact that a power battery pack breaks down and is disconnected with the high-voltage power supply device are solved.

    本发明公开了一种增程式车辆的供电系统及其控制方法,系统包括:高压供电装置、低压供电装置和双向逆变器。将双向逆变器的一端连接高压供电装置,另一端连接低压供电装置,仅通过双向逆变器就可以实现在低压供电装置的电压过低时,高压供电装置的电压可以供给至低压供电装置;而当高压供电装置的电压过低时,低压供电装置的电压可以供给至高压供电装置。高压供电装置的多余的电能通过双向逆变器存至低压供电装置中,并在高压供电装置故障的情况下供给至高压供电装置,由此,解决了因动力电池包发生故障,与高压供电装置断开,从而造成的电压波动,及高压负载无法正常工作的问题。


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    Title :

    Power supply system of extended-range vehicle and control method of power supply system


    Additional title:

    增程式车辆的供电系统及其控制方法


    Contributors:

    Publication date :

    2020-09-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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