Contactless power transferring coil unit, mobile terminal, power transmitting apparatus, and contactless power transferring system

摘要

A contactless power transferring coil unit is provided. The contactless power transferring coil unit includes a flat coil (10,14), a magnetic film (71,72), and a leaking flux detecting coil (42). The flat coil (10,14) is formed by winding a conductive wire into a spiral on a substantially flat plane. The magnetic film (71,72) is disposed so as to cover one entire flat surface of the flat coil (10,14). The leaking flux detecting coil (42) is disposed in a periphery outside an outer edge of the flat coil (14) and the magnetic film (72) and detects leaking magnetic flux from the flat coil (14).