Abstract: A wireless charging method and device have been disclosed. The wireless charging device includes at least two electrodes arranged separately and used for contact with a conductive contact of a power receiving device, and a power supply circuit that is electrically connected to the electrodes and supplies power according to association between all electrodes in contact with the conductive contact. The method includes the following steps: S1: setting electrodes of a wireless charging device to a detection state; S2: detecting whether the electrodes are in contact with a conductive contact of a power receiving device; S3: determining association between all electrodes in contact with the conductive contact, and setting polarity of the electrodes respectively; and S4: connecting a power supply corresponding to the polarity according to the polarity of the electrodes. The method and device have advantages of convenient use and ideal universality.

Abstract: A wireless charging device, a power receiving device and a wireless flat-panel charging system have been disclosed. The wireless charging device includes a support main body, at least two electrodes are arranged on the surface of the support main body, an insulation gap is arranged between the electrodes, and each electrode is respectively connected to a charging power source. The power receiving device includes at least two conductive contacts, the smallest edge distance of a single conductive contact is greater than the size of the insulation gap between the electrodes, and the smallest distance between edges of adjacent conductive contacts is greater than the largest edge distance of a single electrode. The power receiving device is placed on the wireless charging device, the conductive contacts of the power receiving device contact the electrodes of the wireless charging device, and power is directly supplied for the conductive contacts by using the electrodes.