| 摘要 |
PURPOSE: A wireless power transmission apparatus is provided to improve wireless power transmission efficiency by controlling the phase of two or more coils and concentrating wireless power to a specific wireless charger. CONSTITUTION: A wireless power supply unit(100) includes a communication unit(110), an optimal phase deriving unit(120), a phase control signal generator(130), two phase control units(140,150). The communication unit receives necessary information from a wireless charger by communicating with the wireless charger. The optimal phase deriving unit derives an optimal phase of electricity which is transmitted from the wireless power supply unit based on the information which is received through the communication unit. The phase control signal generator generates a phase control signal based on the optimal phase which is derived by the optimal phase deriving unit. The phase control units control a phase according to the phase control signal which is generated by the phase control signal generator. The phase control units are respectively connected with a coil 1(160) and a coil 2(170) and transmits a wireless power which has the determined optimal phase. [Reference numerals] (110) Communication unit; (120) Optimal position extracting unit; (130) Phase control signal generating unit; (140) Phase control unit 1; (150) Phase control unit 2; (160) Coil 1; (170) Coil 2 |
