Hybrid vehicle, cooperation system, and control method for hybrid vehicle

A cooperation system comprising

• a hybrid vehicle, and
• a vehicle external device including a control device,
• the hybrid vehicle including:
• an engine;
• a fuel tank that stores fuel to be supplied to the engine;
• a motor;
• a battery configured to supply electric power to the motor;
• a charger configured to carry out external charging that charges the battery by use of electric power from an external power source;
• a communication device configured to transmit information to the vehicle external device;
• and
• an electronic control unit configured to transmit at least one of information of a use index and information of a request of a charging guide control to the vehicle external device by the communication device during parking at a battery charging point when the use index is less than or equal to a predetermined threshold value, the use index being an index to indicate a degree of use of the external charging in a predetermined time period, the battery charging point being a point where the external charging is performable, the charging guide control being a control to promote use of the external charging,
• the control device of the vehicle external device being configured to execute the charging guide control when the control device receives the information that is transmitted from the hybrid vehicle.

A control method for a hybrid vehicle

• the hybrid vehicle including
• an engine;
• a fuel tank that stores fuel to be supplied to the engine;
• a motor;
• a battery configured to supply electric power to the motor;
• a charger configured to carry out external charging that charges the battery by use of electric power from an external power source;
• and
• an electronic control unit,
• the control method comprising:
• executing, by the electronic control unit, a charging guide control to promote use of external charging during parking at a battery charging point when a use index is less than or equal to a predetermined threshold value, the use index being an index to indicate a degree of use of external charging in a predetermined time period, the battery charging point being a point where the external charging is performable.