| 摘要 |
PROBLEM TO BE SOLVED: To resolve a problem that, in a non-contact power transmission device, in a case where a power transmission part of the non-contact power transmission device supplies an AC power to a power transmission resonator by using a circuit consisting of a semiconductor switching element, when a power transmission frequency of a high-frequency power that the power transmission part transmits to the power transmission resonator is accorded to a resonance frequency of the power transmission resonator, a power loss at the switching element of the power transmission part becomes large.SOLUTION: A power transmission frequency of a power transmission part of a non-contact power transmission device is set to be higher than such a frequency that resonance of a power transmission resonator becomes maximum. Due to this configuration, a power loss at a switching element of the power transmission part can be reduced while keeping a resonance state of the power transmission resonance circuit high. Thus, a non-contact power transmission device that can transmit a power with a small temperature rise at the switching element and with a high efficiency can be provided. |
