Vehicle-mounted control device

A vehicle-mounted control device used in a vehicle-mounted system including:

• a power storage unit;
• a plurality of transfer units that transfer power with the power storage unit;
• a common path provided between the power storage unit and the plurality of transfer units;
• a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path;
• a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path;
• a first switch provided in the first branch path;
• a second switch provided in the second branch path;
• and an interruption unit configured to switch from an allowable state which allows a flow of a current in the common path to an interruption state which interrupts a flow of a current in the common path, the vehicle-mounted control device comprising:
• a control unit that switches the interruption unit from the allowable state to the interruption state when an interruption condition is satisfied;
• and
• a setting unit that sets the interruption condition, wherein
• the setting unit sets the interruption condition based on which operation of a first operation and a second operation is in execution, the first operation being an operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state, the second operation being an operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state.