| 摘要 |
<P>PROBLEM TO BE SOLVED: To supply power highly efficiently and stably in non-contact manner by miniaturizing a circuit, enabling cost reduction, and reducing a loss caused by a circuit element. <P>SOLUTION: This invention relates to the non-contact power supply device including a power receiving coil 120 which supplies/receives electric power in non-contact manner through magnetic coupling with a primary side power supply line 110, and a power receiving circuit 310 connected to the power receiving coil 120 through a resonance capacitor C, and the control method of the non-contact power supply device. The power receiving circuit 310 includes a bridge circuit comprising semiconductor switches Q<SB POS="POST">u</SB>, Q<SB POS="POST">x</SB>, Q<SB POS="POST">v</SB>and Q<SB POS="POST">y</SB>and diodes D<SB POS="POST">u</SB>, D<SB POS="POST">x</SB>, D<SB POS="POST">v</SB>and D<SB POS="POST">y</SB>as well as a smoothing capacitor C<SB POS="POST">o</SB>. The capacitors C<SB POS="POST">x</SB>and C<SB POS="POST">y</SB>are, for example, connected in parallel to the semiconductor switches Q<SB POS="POST">x</SB>and Q<SB POS="POST">y</SB>of a lower arm respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
