Power transmission device and method of controlling power transmission device
AssigneeNissan Motor Co., Ltd.
InventorKota TERADA
Life of this patent
Estimating the term…
Abstract
A power transmission device includes a power transmission coil configured to supply electric power via a wireless connection to a power reception coil mounted on a vehicle, a cover covering at least the top surface of the power transmission coil in an axial direction, a foreign-matter detection coil provided between the power transmission coil and the cover, and an elevating mechanism configured to move the power transmission coil and the foreign-matter detection coil up and down with respect to the ground while keeping a gap between the power transmission coil and the foreign-matter detection coil. The foreign-matter detection coil is separated from the cover with a predetermined distance in the axial direction before detecting foreign matter.
Claims4
A power transmission device provided on a ground, the device comprising:
- a power transmission coil configured to supply electric power via a wireless connection to a power reception coil mounted on a vehicle;
- a cover covering at least a top surface of the power transmission coil in an axial direction;
- a foreign-matter detection coil provided between the power transmission coil and the cover;
- and
- an elevating mechanism configured to move the power transmission coil and the foreign-matter detection coil up and down with respect to the ground while keeping a gap between the power transmission coil and the foreign-matter detection coil,
- wherein the foreign-matter detection coil is separated from the cover with a predetermined distance in the axial direction before detecting foreign matter, and
- the elevating mechanism moves up the foreign-matter detection coil so as to lead a distance between the foreign-matter detection coil and the cover to be shorter than the predetermined distance when the foreign-matter detection coil detects the foreign matter.
A method of controlling a power transmission device provided on a ground,
- the power transmission device including:
- a power transmission coil configured to supply electric power via a wireless connection to a power reception coil mounted on a vehicle;
- a cover covering at least a top surface of the power transmission coil in an axial direction;
- a foreign-matter detection coil provided between the power transmission coil and the cover;
- and
- an elevating mechanism configured to move the power transmission coil and the foreign-matter detection coil up and down with respect to the ground while keeping a gap between the power transmission coil and the foreign-matter detection coil,
- the method comprising:
- causing the foreign-matter detection coil to be separated from the cover with a predetermined distance in the axial direction before detecting foreign matter;
- and
- moving up the foreign-matter detection coil so as to lead a distance between the foreign-matter detection coil and the cover to be shorter than the predetermined distance when the foreign-matter detection coil detects the foreign matter.
A power transmission device provided on a ground, the device comprising:
- a power transmission coil configured to supply electric power via a wireless connection to a power reception coil mounted on a vehicle;
- a cover covering at least a top surface of the power transmission coil in an axial direction;
- an elevating mechanism configured to move the power transmission coil up and down with respect to the ground;
- and
- a sensor configured to acquire an irradiation amount of sunlight received by the cover,
- wherein the elevating mechanism moves down the power transmission coil so as to increase a distance in the axial direction between the power transmission coil and the cover when the irradiation amount of sunlight acquired by the sensor is large, as compared with a case in which the irradiation amount of sunlight is small.
A method of controlling a power transmission device provided on a ground,
- the power transmission device including:
- a power transmission coil configured to supply electric power via a wireless connection to a power reception coil mounted on a vehicle;
- a cover covering at least a top surface of the power transmission coil in an axial direction;
- and
- an elevating mechanism configured to move the power transmission coil up and down with respect to the ground,
- the method comprising moving down the power transmission coil so as to increase a distance in the axial direction between the power transmission coil and the cover when an irradiation amount of sunlight received by the cover is large, as compared with a case in which the irradiation amount of sunlight is small.
Dependencies are inferred from the claim text.