NON-CONTACT POWER SUPPLY DEVICE AND NON-CONTACT POWER SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a non-contact power supply device capable of suppressing reduction in power supply efficiency.SOLUTION: A non-contact power supply device for supplying power in a non-contact manner to a moving body running in a predetermined direction comprises: a power transmission coil 30 for transmitting power in a non-contact manner at least by magnetic coupling to a power reception coil 40 provided in the moving body; and control means for controlling power of the power transmission coil 30. The power transmission coil 30 includes: a base unit 31 which takes a longitudinal direction as the predetermined direction and extends coil wiring in the longitudinal direction; a plurality of enlargement units 33 which are on counter surfaces opposite to the power reception coil 40 of power transmission coil 30 and extend coil wiring at least in a direction except the longitudinal direction to enlarge a coil surface formed with the base unit 31; and a plurality of switching units 32 which are provided correspondingly to the plurality of enlargement units 33 respectively and switch electrical conduction and interception between the enlargement units 33 and base unit 31. The control means controls the plurality of switching units 32 on the basis of movement of the moving body.