Power supply control device

A power supply control device that controls power supply from a power source device to a plurality of loads comprising:

• a circuit that parallely connects the plurality of loads to the power source device;
• a plurality of switches connected to the circuit that switch between a connection and a shut off between the power source device and the plurality of loads;
• a priority setting unit that sets a number of loads of the plurality of loads as prioritized loads and a remainder of the plurality of loads as non-prioritized loads and assign priorities to only the prioritized loads;
• a power detection unit that detects a change in a total power consumption by loads that are connected to the power source device among the plurality of loads;
• a prioritized load identifying unit that repeatedly performs a prioritized load identifying process on all prioritized loads shut off from the power source device, based on a detection result of the power detection unit, the prioritized load identifying process selecting one prioritized load according to the priority when the total power consumption by the loads connected to the power source device has decreased, identifying the selected prioritized load as a connection target when a total power consumption by the selected prioritized load, a prioritized load that is already identified as a connection target and the loads that are connected to the power source device is not greater than an upper output limit that is set according to an output capacity of the power source device, and does not identify the selected prioritized load as the connection target when the total power consumption by the selected prioritized load, the prioritized load that is already identified as the connection target and the loads that are connected to the power source device is greater than the upper output limit;
• a non-prioritized load identifying unit that repeatedly performs a non-prioritized load identifying process that is performed, after the prioritized load identifying process, on all the prioritized loads shut off from the power source device by the prioritized load identifying unit, the non-prioritized load identifying process selecting in ascending order of power consumption one non-prioritized load from the non-prioritized loads shut off from the power source device and identifying the selected non-prioritized load as the connection target as long as a total power consumption of the selected non-prioritized load, the load that is already identified as the connection target and the loads that are connected to the power source device is not greater than the upper output limit;
• and
• a changeover control unit that controls a changeover of the switch corresponding to the loads that are identified as the connection targets by the prioritized load identifying unit and the non-prioritized load identifying unit, and to connect the power source device to the loads that are identified as the connection targets.