A power transmission device having a surface a part of which defines a power transmission plane. The device includes: a power transmission coil structure including 2N planar coils laminated in a perpendicular direction to the power transmission plane and wirelessly transmitting AC power to a power receiving device via the power transmission plane and being disposed on a side toward the power transmission plane; and a magnetic substance disposed on a side of the power transmission coil opposite from the power transmission plane, wherein the 2N planer coils constitute coil groups including a coil group in which an i'th closest planar coil to the power transmission plane out of the 2N planar coils and the i'th-closest planar coil to the magnetic substance out of the 2N planar coils are connected in series, and the coil groups are connected in parallel to each other.
POWER TRANSMISSION DEVICE, VEHICLE EQUIPPED WITH POWER TRANSMISSION DEVICE, AND WIRELESS POWER TRANSMISSION SYSTEM
05.05.2016
Patent
Elektronische Ressource
Englisch
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