19011934. POWER TRANSMISSION DEVICE (DENSO CORPORATION)
POWER TRANSMISSION DEVICE
Organization Name
Inventor(s)
Yusei Nakayashiki of Kariya-city JP
Masaya Takahashi of Kariya-city JP
Nobuhisa Yamaguchi of Kariya-city JP
POWER TRANSMISSION DEVICE
This abstract first appeared for US patent application 19011934 titled 'POWER TRANSMISSION DEVICE
Original Abstract Submitted
A power transmission device for supplying electric power wirelessly to a power reception device equipped with a power reception coil includes a power transmission resonance circuit equipped with a power transmission coil and a power transmission resonance capacitor connected in parallel therewith, a tertiary resonance circuit, and a power transmission control unit that controls the tertiary resonance switching element. The tertiary resonance circuit includes a tertiary coil, a tertiary resonance capacitor connected in parallel therewith, and a tertiary resonance switching element connected in parallel with the tertiary coil. The tertiary resonance switching element is operable to switch between an open state and a short-circuited state of the tertiary resonance switching element. When making a switch from an energized state to a standby state, the power transmission control unit short-circuits the tertiary resonance switching element to place the tertiary coil and the tertiary resonance capacitor in a non-resonance state.