Patent ID: 9035602
Filing Date: 2015-05-19
Classification: H02J

Abstract:
1. A wireless direct contact charger for a portable device, the portable device having a first electrode and a second electrode provided on one surface of a housing of the portable device separated by a distance, the wireless direct contact charger comprising: a voltage supply; a first plate electrode and a second plate electrode; a polarity detection circuit that detects, when the first electrode or the second electrode of the portable device is placed on the first plate electrode or the second plate electrode, whether the first electrode of the portable device is in contact with the first plate electrode or the second electrode of the portable device is in contact with the first plate electrode; and a switching circuit which connects the first plate electrode and the second plate electrode to the voltage supply according to a polarity consistent with the detection by the polarity detection circuit, wherein the first plate electrode and the second plate electrode each have linear dimensions less than the distance between the first electrode and the second electrode of the portable device.