A wireless power transmission device capable of preventing a lifespan of a capacitor that smooths a voltage rectified by a rectification circuit from being shortened, including a power transmission coil magnetically coupled to the power receiving coil, a rectification circuit that rectifies a supplied AC voltage, a first capacitor that smooths a voltage supplied from the rectification circuit into DC voltage, a power transmission circuit that converts the DC voltage smoothed by the first capacitor into AC voltage at a driving frequency, and a second capacitor that bypasses between two transmission paths connecting the circuits, the second capacitor is provided on the power transmission circuit side relative to the first capacitor between the rectification circuit and the power transmission circuit, and the device includes an inductor or rectification element between the first and second capacitor in the high potential side transmission path among the two transmission paths.
WIRELESS POWER TRANSMISSION DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM
2019-10-03
Patent
Elektronische Ressource
Englisch
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