A battery switch-on circuit, comprising: a power supply circuit and a switch circuit, wherein: the power supply circuit comprises a battery power supply unit, a first voltage dividing resistor, a second voltage dividing resistor, and a fourth switch device, wherein a positive electrode of the battery power supply unit is connected to a first terminal of the first voltage dividing resistor, a negative electrode of the battery power supply unit is electrically connected to a first terminal of the second voltage dividing resistor and an input terminal of the fourth switch device respectively, and a second terminal of the first voltage dividing resistor and a second terminal of the second voltage dividing resistor are electrically connected to each other; the switch circuit comprises a dual-channel voltage comparison unit and a switch control unit, the dual-channel voltage comparison unit comprises a first input terminal (PACK+) and a first output terminal and a second input terminal (PACK-) and a second output terminal, the first input terminal (PACK+) is electrically connected to the positive electrode of the battery power supply unit, the first output terminal is electrically connected to a first control terminal of the switch control unit, the second input terminal (PACK-) is electrically connected to the output terminal of the fourth switch device, the second output terminal is electrically connected to a second control terminal of the switch control unit, and an output terminal (12V POWR_SEC) of the switch control unit is electrically connected to a control terminal of the fourth switch device; and the dual-channel voltage comparison unit is configured to transmit, when a positive electrode voltage of the battery power supply unit is lower than a reference voltage, a first control signal to the first control terminal of the switch control unit to cause the switch control unit to control the fourth switch device to switch off, and is further configured to transmit, when an output terminal voltage of the fourth switch device is higher than the reference voltage, a second control signal to the second control terminal of the switch control unit to cause the switch control unit to control the fourth switch device to switch on. the power supply circuit comprises a battery power supply unit, a first voltage dividing resistor, a second voltage dividing resistor, and a fourth switch device, wherein a positive electrode of the battery power supply unit is connected to a first terminal of the first voltage dividing resistor, a negative electrode of the battery power supply unit is electrically connected to a first terminal of the second voltage dividing resistor and an input terminal of the fourth switch device respectively, and a second terminal of the first voltage dividing resistor and a second terminal of the second voltage dividing resistor are electrically connected to each other; the switch circuit comprises a dual-channel voltage comparison unit and a switch control unit, the dual-channel voltage comparison unit comprises a first input terminal (PACK+) and a first output terminal and a second input terminal (PACK-) and a second output terminal, the first input terminal (PACK+) is electrically connected to the positive electrode of the battery power supply unit, the first output terminal is electrically connected to a first control terminal of the switch control unit, the second input terminal (PACK-) is electrically connected to the output terminal of the fourth switch device, the second output terminal is electrically connected to a second control terminal of the switch control unit, and an output terminal (12V POWR_SEC) of the switch control unit is electrically connected to a control terminal of the fourth switch device; and the dual-channel voltage comparison unit is configured to transmit, when a positive electrode voltage of the battery power supply unit is lower than a reference voltage, a first control signal to the first control terminal of the switch control unit to cause the switch control unit to control the fourth switch device to switch off, and is further configured to transmit, when an output terminal voltage of the fourth switch device is higher than the reference voltage, a second control signal to the second control terminal of the switch control unit to cause the switch control unit to control the fourth switch device to switch on.