Power supply system, power transmission device, power receiving device, method for controlling power transmission device, method for controlling power receiving device, and program

A power supply system including a power transmission device and a power receiving device, the power transmission device wirelessly transmitting power to the power receiving device,

• the power transmission device comprising:
• a detection unit configured to detect a position of the power receiving device and a distance from the power transmission device to the power receiving device;
• a storage unit configured to store a preset relationship between a power transmission efficiency and a distance from the power transmission device to the power receiving device;
• and
• a wireless transmission unit configured to wirelessly transmit the position and the distance detected by the detection unit and the relationship stored in the storage unit to the power receiving device;
• and
• the power receiving device comprising:
• a receiving unit configured to wirelessly receive the position, the distance, and the relationship from the power transmission device;
• and
• a notification unit configured to notify a user of the power receiving device of the position, the distance, and the relationship received by the receiving unit after the power receiving device is moved.

A power transmission device for wirelessly transmitting power to a power receiving device, the power transmission device comprising:

• a calculation unit configured to calculate a distance from the power transmission device to the power receiving device;
• a storage unit configured to store a preset relationship between a power transmission efficiency and a distance from the power transmission device to the power receiving device;
• and
• a wireless transmission unit configured to wirelessly transmit the distance calculated by the calculation unit and the relationship stored in the storage unit to the power receiving device.

A power transmission device for wirelessly transmitting power to a power receiving device, the power transmission device comprising:

• a detection unit configured to detect a position of the power receiving device and a distance from the power transmission device to the power receiving device;
• a storage unit configured to store a preset relationship between a power transmission efficiency and a distance from the power transmission device to the power receiving device;
• and
• a wireless transmission unit configured to wirelessly transmit the position and the distance detected by the detection unit and the relationship stored in the storage unit to the power receiving device.

A method for controlling a power transmission device for wirelessly transmitting power to a power receiving device, the method comprising:

• calculating a distance from the power transmission device to the power receiving device;
• storing a preset relationship between a power transmission efficiency and a distance from the power transmission device to the power receiving device;
• and
• wirelessly transmitting the calculated distance and the preset relationship between the power transmission efficiency and the distance from the power transmission device to the power receiving device to the power receiving device.

A power supply system comprising:

• a calculation unit configured to calculate a distance from a power transmission device to a power receiving device;
• a storage unit configured to store a preset relationship between a power transmission efficiency and a distance from the power transmission device to the power receiving device;
• and
• a notification unit configured to notify a user of the distance and the relationship.

A power supply system comprising:

• a detection unit configured to detect a distance from a power transmission device to a power receiving device;
• a storage unit configured to store a preset relationship between a power transmission efficiency and a distance from the power transmission device to the power receiving device;
• and
• a notification unit configured to notify a user of the distance and the relationship.