High-voltage control cabinet and temperature control system thereof

The invention discloses a high-voltage control cabinet and a temperature control system thereof, and the system comprises a box body which is internally provided with an upper-layer installation plate and a lower-layer installation plate; a temperature control power supply, a temperature control module, a first pre-charging relay, a first pre-charging resistor, a second pre-charging relay and a second pre-charging resistor are mounted on the upper-layer mounting plate; a main transformer relay, an auxiliary transformer relay, a main positive relay group, a charging positive relay group, a charging negative relay group, a main transformer fuse, an auxiliary transformer fuse and a current sensor are mounted on the lower-layer mounting plate; the high-voltage control cabinet comprises a main positive loop and a main negative loop. The main heating module is arranged on the lower-layer mounting plate, so that heat can be conveniently dissipated from the lower-layer mounting plate. By arranging the main relay grou