Vehicle control unit and vehicle control system with control unit configured to selectively supply power to a load

A vehicle control unit comprising:

• a control unit connectable to a first power supply line of a vehicle;
• a detachable internal rechargeable battery;
• a housing configured to accommodate the control unit and the internal rechargeable battery therein;
• a first connector connected to the control unit;
• a plurality of load modules, each of which including loads, and a type and/or a number of the loads in each of the plurality of load modules are different;
• and
• a second connector connected to any one of the plurality of load modules,
• wherein the control unit is connected to one of the plurality of load modules by connecting the first connector to the second connector,
• wherein the control unit is configured to selectively supply, to the load through the first connector and the second connector, one of first power-supply electric power supplied from the first power supply line and second power-supply electric power supplied from the internal rechargeable battery according to a situation, and
• wherein the control unit grasps which of the plurality of load modules is connected to the control unit, and specifies a position of a terminal to which the load is connected, by identifying a type of the second connector, whether or not the load is connected to each terminal of the second connector, and impedance of the load connected to each terminal of the second connector.