US 12,466,282 B2
Primary circuit device, secondary circuit device, and system for inductive charging
Martin Erler, Dornbirn (AT); and Marc Hanselmann, Frümsen (CH)
Assigned to BRUSA ELEKTRONIK AG, Sennwald (CH)
Appl. No. 17/252,570
Filed by BRUSA Elektronik AG, Sennwald (CH)
PCT Filed Jun. 24, 2019, PCT No. PCT/EP2019/066675
§ 371(c)(1), (2) Date Dec. 15, 2020,
PCT Pub. No. WO2020/002240, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 10 2018 115 816.5 (DE), filed on Jun. 29, 2018.
Prior Publication US 2021/0252992 A1, Aug. 19, 2021
Int. Cl. H02J 7/00 (2006.01); B60L 53/12 (2019.01); B60L 53/62 (2019.01); H02J 7/14 (2006.01); H02J 50/12 (2016.01)
CPC B60L 53/62 (2019.02) [B60L 53/12 (2019.02); H02J 7/00308 (2020.01); H02J 50/12 (2016.02); B60L 2210/30 (2013.01); H02J 2207/20 (2020.01); H02J 2310/48 (2020.01)] 10 Claims
OG exemplary drawing
 
1. A system for energy transmission, the system comprising:
a car pad module device comprising a secondary circuit device, the secondary circuit device comprising:
a secondary coil configured to transmit and/or receive magnetic energy of a magnetic field and configured to convert the magnetic energy into electrical energy;
a rectifier unit configured to rectify the electrical energy, the rectifier unit comprising an input and an output, the output configured to provide electrical active energy as voltage and/or current;
an energy conducting unit connected to the input of the rectifier unit and connecting the secondary coil to the rectifier unit, the energy conducting unit configured to transmit the electrical active energy and electrical reactive energy; and
a secondary-side detection unit connected to the input and/or the output of the rectifier unit in order to detect an overvoltage at the input and/or the output of the rectifier unit and/or an external magnetic field, wherein when the overvoltage is detected at the input and/or the output the secondary-side detection unit is configured to interrupt the energy conducting unit thus limiting transmission of the electrical active energy and causing the electrical reactive energy to be reflected by the secondary coil to influence the magnetic field; and
a ground pad module device comprising a primary circuit device, the primary circuit device comprising:
a primary coil configured to convert electrical energy into magnetic energy, the primary coil further configured to transmit and/or receive the magnetic energy; and
an energy generating device connected to the primary coil, the energy generating device configured to provide the electrical energy as electrical active energy and/or electrical reactive energy, the energy generating device configured to extract a command from received magnetic energy as a result of the electrical reactive energy being reflected via the magnetic field from the secondary coil, the energy generating device further configured to derive a control command from the command as extracted in order to change a variable of the energy provision that limits the electrical energy provided to the primary coil for transmission to the secondary coil via the magnetic field;
wherein the car pad module device and the ground pad module device are capable of being coupled via the magnetic field.