Patent ID: 8922321
Filing Date: 2014-12-30
Classification: H01F,H02J,H04B

Abstract:
1. A power and data transmission method wherein a pair of coil units ( 1 ) are magnetically coupled to each other, each of said coil units having: a power transmission coil ( 4 ) configured by a coil ( 2 ) which is wound in a plane, and a magnetic shield member ( 3 ) which is placed on a rear surface of said coil ( 2 ); and an information transmission coil ( 7 ) configured by a coil ( 5 ) which is wound in a plane, and a magnetic shield member ( 6 ) which is placed on a rear surface of said coil ( 5 ), a coil diameter of said information transmission coil ( 7 ) being formed to be smaller than a coil diameter of said power transmission coil ( 4 ), said information transmission coil ( 7 ) being stackingly placed in a state where said information transmission coil is positioned in a coil outer circumferential portion of said power transmission coil ( 4 ), and data are transmitted while power is transmitted.