Coil device and inductance-changing mechanism

A coil device facing another coil device to transmit or receive power wirelessly, the coil device comprising:

• a first coil portion facing a second coil portion of the other coil device and including a conductive wire;
• a plurality of non-magnetic members which are electrically conductive and disposed such that the first coil portion is positioned between the plurality of non-magnetic members and the second coil portion,
• wherein the plurality of non-magnetic members includes a first non-magnetic member and a second non-magnetic member which are disposed such that the first non-magnetic member is positioned between the first coil portion and the second non-magnetic member, and
• wherein at least one of the first non-magnetic member and the second non-magnetic member includes an eddy current interrupter for changing a state of an eddy current formed in the at least one of the first non-magnetic member and the second non-magnetic member by interrupting a portion of the eddy current, the eddy current interrupter including a hole portion penetrating the at least one of the first non-magnetic member and the second non-magnetic member or a depressed portion in the at least one of the first non-magnetic member and the second non-magnetic member, and
• a conductive sheet-shaped member provided between the first non-magnetic member and the second non-magnetic member, and including a first surface in contact with the first non-magnetic member and a second surface in contact with the second non-magnetic member.