Patent ID: 8120317
Filing Date: 2012-02-21
Classification: H02J

Abstract:
1. A wireless charger for charging an electronic device with a secondary coil and a plurality of metal blocks, the wireless charger comprising: a holder with a primary coil electromagnetically coupled to the secondary coil of the electronic device, and a plurality of holding coils fixed thereon corresponding to the metal blocks; a resilient member deformably sleeved on the holder; a sensing module configured for detecting a current value of each holding coil when the wireless charger is power on; a storing module configured for storing each current value of the holding coils from the sensing module and predetermining a reference current value for each holding coil; a comparing module configured for comparing the current value of the holding coil with the reference current value to determine whether the current value of the holding coil equals the reference current value; and an adjusting module configured for changing the current value to the reference current value when the current value is not equal to the reference current value to adjust an angle of the secondary coil of the electronic device relative to the primary coil of the wireless charger, thereby the electronic device can be adjusted to face the wireless charger coaxially when charging.