Electric vehicle charging protection device

The utility model discloses an electric vehicle charging protection device which comprises a master controller, a power battery pack, a battery management system, a motor controller, a charging contact and a charging protection circuit. A main contact of the charging contact is connected between a positive pole of the power battery pack and a positive pole of a charging interface in series. The first output end of the charging protection circuit is connected with a driving coil of the charging contact to control closing and disconnection of a main contact point of the charging contact, the second output end of the charging protection circuit is connected with the neutral gear input end of the motor controller to output a control signal to the motor controller so as to control a power motor to stop operating during charging, and a first communication interface and a second communication interface are respectively connected with a second communication line and a first communication line. The electric vehicle charging protection device automatically stops charging to prevent batteries from being charged excessively so as to effectively protect the batteries of an electric vehicle and prolong the service life of the batteries when the batteries are full of electricity or other parameters reach preset values, and meanwhile ensures that the vehicle is forbidden to run in the charging process.