Uninterruptible power supply system of coke oven door service car

The utility model discloses an uninterruptible power supply system of a coke oven door service car, a storage box is welded at the edge part of a mounting rod, a wire inlet is arranged at one side of the storage box, a wire outlet is arranged at the other side of the storage box, fixing rods are welded at one side of the inner part of the wire inlet and one side of the inner part of the wire outlet, and the fixing rods are connected with the mounting rod. Bolts are installed on the other side of the interior of the wire inlet and the other side of the interior of the wire outlet in a threaded mode, extrusion blocks are connected to the edges of the bolts through movable connecting bases, and a clockwork spring is clamped to the position, located on the outer surface of the mounting rod, in the storage box. The energy storage unit directly provides a direct current power supply for the frequency converter through the power module and the silicon controlled rectifier in parallel, part of conversion circuits are