NON-CONTACT POWER TRANSMISSION DEVICE AND NON-CONTACT POWER TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a non-contact power transmission device that detects abnormality in a secondary coil, a rectification unit, or the like without depending on radio communication, and can quickly move to safe operation.SOLUTION: A non-contact power transmission device comprises: a current transformer 23 for detecting the magnitude of input from a power control device 7; a ground side coil 13 for generating a magnetic field by supply current on the basis of the input from the power control device 7; and a control unit that controls the supply current to reduce the magnetic field when the value of change in the magnitude of the input is a first prescribed value or more and less than a second prescribed value in a prescribed time on the basis of a detection result by the current transformer 23, and on the other hand controls the supply current to stop the magnetic field when the value of change in the magnitude of the input is the second prescribed value or more in the prescribed time.SELECTED DRAWING: Figure 1