INDUCTIVE CHARGING OF VEHICLES WITH SECONDARY-SIDE VOLTAGE MEASUREMENT AND FEEDBACK FROM THE SECONDARY SIDE TO THE PRIMARY SIDE

摘要

The invention relates to a secondary-side circuit device comprising a secondary coil (L2) for transmitting and/or receiving magnetic energy of a magnetic field (106) and for converting the magnetic energy into electrical energy, an energy transmission unit (405) for transmitting the electrical energy, a secondary-side detection unit (409, 407) and a clamper circuit unit (301), wherein: the magnetic field (106) is generated by a primary coil (L1) of a primary circuit device (105'); the energy transmission unit (405) has an inlet for connecting the secondary coil (L2); the energy transmission unit (405) has an outlet for providing the electrical energy as voltage and/or current; the secondary-side detection unit (409, 407) is connected to the inlet and/or the outlet of the energy transmission unit, in order to detect an overvoltage at the inlet and/or the outlet of the energy transmission unit; and, when the overvoltage is detected at the inlet (403) and/or the outlet (404) of the energy transmission unit (405), the secondary-side detection unit (409, 407) is designed to influence the magnetic field (106) in the secondary coil (L2) by means of the clamper circuit unit (301) such that a current jump and/or a voltage jump is brought about in the primary coil (L1).