Power supply safety protection apparatus of electric trackless rubber-tyred vehicle for mines

The utility model discloses a power supply safety protection apparatus of an electric trackless rubber-tyred vehicle for mines. A main loop comprises a storage battery set GB, a power switch QS, and a battery management system BMS. The battery management system BMS is connected with a normally-open contact of a DC contactor KM and a load Rfz. A vehicle door control circuit comprises a door limiting switch K, a programmable controller PLC, and an intermediate relay KA2. A control loop is formed by a normally-open contact of a relay KA1, a normally-open contact of the intermediate relay KA2, a coil of the DC contactor KM, and a power supply E. A battery alarm output active contact BMS-A is connected with a self-locking switch SA and a coil of the relay KA1 to form a loop. According to the utility model, no matter when the parameter of the storage battery set GB exceeds a limit abnormally and may cause a hazard or when people open a vehicle door to get on or off, the electric trackless rubber-tyred vehicle can b