ONBOARD POWER SUPPLY CONTROL DEVICE AND ONBOARD POWER SUPPLY APPARATUS

摘要

Provided is an onboard power supply control device capable of more accurately understanding the power supply capability of a power storage unit and assuredly retaining capability of supply to a first load while preventing excessive inhibition of a backup operation.　A control device (3) is provided with: a discharge circuit (20) that performs a backup operation for supplying power to first and second loads (81, 82) from a power storage unit (92); a control unit (10) that causes the discharge circuit (20) to perform the backup operation when a backup condition has been established; and a voltage detection unit (32) that detects an output voltage of the power storage unit (92). When the output voltage of the power storage unit (92) becomes less than a threshold voltage while power supply to the second load (82) is stopped after start of the backup operation, the control unit (10) inhibits the backup operation for the second load (82).