Vehicle shut-off control device

A vehicle cut-off control device to be used in a vehicle power supply system including a power storage unit configured to be charged by a charging unit and a load configured to receive a supply of electric power from the power storage unit,

• the vehicle power supply system further including
• a first conductive path provided between a high potential terminal of the power storage unit and a high potential terminal of the load,
• a second conductive path provided between a low potential terminal of the power storage unit and a low potential terminal of the load,
• a first branch path branching off from the first conductive path and provided between the first conductive path and a high potential terminal of the charging unit, and
• a second branch path branching off from the second conductive path and provided between the second conductive path and a low potential terminal of the charging unit,
• the first conductive path having a first common path provided between the power storage unit and the first branch path, and a third branch path provided between the first branch path and the load, and
• the second conductive path having a second common path provided between the power storage unit and the second branch path, and a fourth branch path provided between the second branch path and the load, and
• the vehicle cut-off control device comprising:
• a first cut-off unit configured to switch to a first cut-off state, in which at least one of the first common path and the second common path is cut-off, from a first cancel state in which the first cut-off state is canceled;
• a second cut-off unit configured to switch to a second cut-off state, in which at least one of the first branch path and the second branch path is cut-off, from a second cancel state in which the second cut-off state is canceled;
• a first detection unit configured to detect a current value of a current flowing in at least one of the first common path and the second common path, and a direction in which the current is flowing;
• a second detection unit configured to detect that a current is flowing in at least one of the first branch path and the second branch path;
• and
• a control unit configured to switch the first cut-off unit from the first cancel state to the first cut-off state and switch the second cut-off unit from the second cancel state to the second cut-off state, based on detection signals detected by the first detection unit and the second detection unit.