Electric leakage detection device and method, and vehicle

A method for detecting electric leakage, applicable to a device for detecting electric leakage, wherein

• the device comprises:
• a detection assembly connected to a first phase discharge path and a second phase discharge path, the first phase discharge path and the second phase discharge path configured to connect to a power supply and transmit electricity outputted from the power supply when the power supply discharges electricity, and the detection assembly configured to establish a detection loop for the first phase discharge path and the second phase discharge path when the power supply discharges electricity,
• a sampling assembly connected to the detection assembly, and
• a signal processing circuit connected to the sampling assembly, and configured to receive a first detected voltage and a second detected voltage from the sampling assembly;
• and the method comprises:
• when the power supply discharges electricity through the first phase discharge path, controlling, by conducting a first detection circuit of the detection assembly, the sampling assembly to collect the first detected voltage from the first detection circuit;
• when the power supply discharges electricity through the second phase discharge path, controlling, by conducting a second detection circuit of the detection assembly, the sampling assembly to collect the second detected voltage from the second detection circuit;
• and
• comparing, by the signal processing circuit, a voltage difference between the first detected voltage and the second detected voltage with a threshold voltage, and in response to that the voltage difference is greater than the threshold voltage, determining the power supply has electric leakage.