| 摘要 |
A non contact power transmission device comprising: a battery cell (BAT); an induction coil (Scoil) configured to generated a power signal from a magnetic field applied thereto, a secondary rectification unit (200) configured to rectify the power signal to generate a rectified power signal; a foreign object indication unit (220) having a switch (Q3), the foreign object indication unit (220) being configured to receive the rectified power signal and transfer the rectified power signal to a charging control unit through the switch (Q3); and the charging control unit (230) configured to process the power signal to charge the battery cell (BAT) with the processed power signal, wherein, the foreign object indication unit (220) is configured to control on/off state of the switch (Q3) in response to an instantaneous input of the rectified power. |
