POWER SUPPLY DEVICE AND VEHICLE

The utility model provides a power supply device and a vehicle, and the power supply device comprises a frame body which is provided with an opening part; the battery power loop is arranged in the frame body; a cover part which is arranged on the outer surface of the frame body and covers the opening part; and a switch provided so as to operate in response to the attachment and detachment of the cover part. The battery power loop further comprises a plurality of battery modules which are electrically connected with one another; an intermediate busbar portion electrically connected to the plurality of battery modules and disposed at a position corresponding to an opening portion formed in the housing; and the contactor is arranged outside the frame body and is used for being connected with a load. The switch blocks the electric power for operating the contactor in response to the removal of the cover part. Therefore, when maintenance is carried out from the ignition-on state, the coil energization of the conta