NON-CONTACT POWER TRANSMISSION APPARATUS, POWER TRANSMISSION APPARATUS AND ELECTRONIC APPARATUS USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a power transmission apparatus capable of detecting abnormal heat generation caused by mixed foreign matters: and to provide an electronic apparatus using the same.

SOLUTION: The power transmission apparatus includes a primary coil L1(130), and supplies power to a load of a power receiving apparatus by electromagnetically coupling the primary coil to a secondary coil L2 of the power receiving apparatus. This apparatus has a power transmission section 200 for supplying an AC signal to the primary coil; a temperature detection element 180 disposed on a magnetic line of force forming region of the primary coil; an abnormal temperature rise detection section 220 for detecting an abnormal temperature rise based on a first temperature at a first time and a second temperature at a second time which are detected by the temperature detection element; and a power transmission control section 210 for controlling the power transmission of the power transmission section and controlling so as to stop the power transmission from the primary coil when the abnormal temperature rise is detected in the abnormal temperature rise detection section.

COPYRIGHT: (C)2010,JPO&INPIT