COIL COMPONENT, METHOD OF MANUFACTURING THE SAME, POWER TRANSMITTER, POWER RECEIVER, POWER TRANSMISSION SYSTEM, AND MOBILE BODY

A coil component includes a first planar coil that includes multiple turn portions and a projecting piece that extends from an inner circumferential edge and/or an outer circumferential edge of at least one turn portion among the multiple turn portions and that bends such that the projecting piece leaves from the turn portion, and a first holding member that is in contact with the multiple turn portions of the first planar coil and that overlaps the first planar coil. The first holding member includes a groove on a first surface on which the first planar coil is stacked, and the projecting piece is in contact with an inner surface of the groove in a radial direction.