Electric vehicle power supply equipment and battery backup method thereof, and power backup device

Abstract

An electric vehicle power supply equipment and battery backup method thereof, and a power backup device are provided. The electric vehicle power supply equipment includes a battery, a safety protection circuit, a control circuit, a discharge circuit, an output switching circuit, a control pilot circuit and an auxiliary discharge circuit. The safety protection circuit provides a power failure indication signal based on positive and the negative charging gun power supply voltages. The control pilot circuit determines whether a charging gun is connected to an electric vehicle based on a pilot power supply voltage to provide control pilot information. The control circuit provides a discharge control signal based on the power failure indication signal and the control pilot information. The discharge circuit, the output switching circuit and the auxiliary discharge circuit convert the battery voltage into the pilot power supply voltage or positive and negative equipment power supply voltages.

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