US 12,071,032 B2
Inductive charging of vehicles with secondary-side voltage measurement and feedback from the secondary side to the primary side
Martin Erler, Dornbirn (AT); Marc Hanselmann, Frümsen (CH); Lukas Böhler, Wangs (CH); and Marc Bosch, Sennwald (CH)
Assigned to BRUSA Elektronik AG, Sennwald (CH)
Appl. No. 17/254,218
Filed by BRUSA Elektronik AG, Sennwald (CH)
PCT Filed Jun. 24, 2019, PCT No. PCT/EP2019/066660
§ 371(c)(1), (2) Date Dec. 18, 2020,
PCT Pub. No. WO2020/002227, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 10 2018 115 860.2 (DE), filed on Jun. 29, 2018.
Prior Publication US 2021/0268920 A1, Sep. 2, 2021
Int. Cl. H02J 7/00 (2006.01); B60L 53/122 (2019.01)
CPC B60L 53/122 (2019.02) [H02J 7/00308 (2020.01); H02J 2310/48 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A secondary circuit device comprising:
a secondary coil for transmitting and/or receiving magnetic energy of a magnetic field and for converting the magnetic energy into electrical energy, wherein the magnetic field is generated by a primary coil of a primary circuit device;
an energy transmission unit for transmitting the electrical energy, wherein the energy transmission unit includes an inlet and an outlet, the inlet for connecting the secondary coil and the outlet for providing the electrical energy as voltage and/or current;
a clamper circuit unit connected to the secondary coil; and
a secondary-side detection unit i-connected to the inlet and/or the outlet of the energy transmission unit, the secondary-side detection unit configured to detect an overvoltage at the inlet and/or the outlet of the energy transmission unit, and when the overvoltage is detected, the secondary-side detection unit further configured to influence the magnetic field in the secondary coil via triggering of the clamper circuit unit such that a current jump and/or a voltage jump is induced in the primary coil of the primary circuit device detectible by the primary circuit device for switching off generation of the magnetic field.