Wireless power transmitting apparatus and method thereof

摘要

Disclosed herein are a wireless power transmitting apparatus and method of wirelessly transmitting a power to a power receiving apparatus by selectively using one central coil and two side coils, wherein in the case in which each of the one central coil and the two side coils transmits the power, a reception power amount received by the power receiving apparatus is judged, at least one of the one central coil and the two side coils is selected as a power transmitting coil that is to transmit the power by the judged reception power amount, and the power is wirelessly transmitted to the power receiving apparatus through the selected power transmitting coil.

主权项

1. A wireless power transmitting apparatus comprising:
a core assembly including one central coil, and two side coils to transmit a power to a power receiving apparatus, the two side coil including a first side coil and a second side coil; and a power transmitting unit configured to receive a reception power amount measured by the power receiving apparatus receiving wireless power transmitted from each of the one central coil and the two side coils from the power receiving apparatus, to perform a first coil selection which includes selecting any one of the one central coil and the two side coils as a power transmitting coil or selecting the one central coil and any one of the two side coils as a power transmitting coil by the received reception power amount, to perform a transmission of the power to the power receiving apparatus through the selected power transmitting coil, to judge whether or not a charging completion signal is received from the power receiving apparatus, and to judge whether or not the reception power amount has been decreased, wherein the power transmitting unit repeatedly performs the transmission of the power through the selected power transmitting coil when it is judged that the charging completion signal is not received and the reception power amount has not been decreased, and wherein the power transmitting unit performs a second coil selection when it is judged that the charging completion signal is not received and the reception power amount has been decreased, wherein the second coil selection includes sequentially applying the power to the one central coil and the two side coils and judging the reception power amount transmitted from the power receiving apparatus, wherein the core assembly includes: the central coil installed at a first level; the first side coil installed at a second level different from the first level; the second side coil installed at a third level different from the first level and the second level; and a magnetic core having at least a step, wherein the step is formed to receive the first side coil and the second side coil at the different levels.