Patent ID: 9524823
Filing Date: 2016-12-20
CPC Classification: B60L,H01F,H02J,Y02T

Claim Text:
1. A coil unit configured to transmit or receive electric power by electromagnetic induction in a noncontact manner, comprising: a coil into or from both terminals of which a high-frequency voltage is input or output; a metal conductor placed near the coil; and a first capacitor and a second capacitor respectively connected to the terminals of the coil, wherein the ratio of the capacitance between the first capacitor and the second capacitor is set to a value at which a current induced into the metal conductor due to capacitance coupling when a high-frequency voltage is input into or output from the coil is reduced, and the ratio between capacitances C (1) a combined capacitance [C (2) the current induced into the metal conductor due to capacitance coupling is smaller than that observed when C