Charging gun and unlocking circuit therefor

The invention discloses a charging gun and an unlocking circuit therefor. The unlocking circuit for the charging gun comprises a voltage trigger module and an electric control lock module; the input end of the voltage trigger module is connected with the charging output end of the charging gun; the output end of the voltage trigger module is connected with the input end of the electric control lock module, wherein the voltage trigger module collects a voltage between the positive output end and the negative output end of the charging gun; when the voltage reaches a preset value, a trigger signal is transmitted to the electric control lock module; and when the voltage trigger module outputs a trigger signal, the electric control lock module is locked tightly, and when the voltage trigger module has no trigger signal output, the electric control lock module is unlocked. By adoption of the technical scheme, the voltage trigger module is added between the positive output end and the negative output end of the charging gun; and the charging gun is intelligently controlled and locked in a power-on state, and the charging gun is automatically unlocked in a power-off state.