Transmission coil for the inductive transfer of energy
The invention relates to a transmission coil ( 10 ) configured for inductive energy transfer, comprising a carrier ( 17 ), a coil arrangement ( 11 ) having a plurality of turns ( 12 ), and a capacitance. It is thereby provided that the capacitance is formed of a plurality of capacitors ( 22 ), wherein each capacitor ( 22 ) is assigned to an individual turn ( 12 ) or to a group of at least two turns ( 12 ) of the coil arrangement ( 11 ), and together with the coil arrangement, the capacitors ( 22 ) are arranged on the carrier ( 17 ). The invention further relates to a stationary charging station and to a vehicle, each comprising such a transmission coil ( 10 ), and to a system for the inductive charging of vehicles. No drawing text to be translated.
1. A transmission coil ( 10 ) which is configured to inductively transfer energy, comprising a carrier ( 17 ), a coil arrangement ( 11 ) with a multiplicity of turns ( 12 ), and a capacitance, characterized in that the capacitance is formed by a multiplicity of capacitors ( 22 ), wherein one of the capacitors ( 22 ) is assigned to an individual turn ( 12 ) and another of the capacitors is assigned to a group of at least two turns ( 12 ) of the coil arrangement ( 11 ), and the capacitors ( 22 ) are arranged, together with the coil arrangement, on the carrier ( 17 ).
2. The transmission coil ( 10 ) as claimed in claim 1 , characterized in that, furthermore, power electronics ( 20 ), which comprise a power inverter and/or a rectifier, are arranged on the carrier ( 17 ).
3. The transmission coil ( 10 ) as claimed in claim 2 , characterized in that the power electronics ( 20 ) are configured to deactivate or activate individual turns ( 12 ) or individual groups of turns ( 12 ).
4. The transmission coil ( 10 ) as claimed in claim 2 , characterized in that the turns ( 12 ) of the coil arrangement ( 11 ) are arranged in the form of concentric circles, a spiral path or a rectangular path, and the power electronics are located in a central region ( 13 ) of the coil arrangement ( 11 ).
5. The transmission coil ( 10 ) as claimed in claim 1 , characterized in that the carrier ( 17 ) is configured to serve as a shield for stray magnetic fields.
6. The transmission coil ( 10 ) as claimed in claim 1 , characterized in that the carrier ( 17 ) is configured to serve as a heat sink for the capacitors ( 22 ), the coil arrangement ( 11 ), a ferrite core ( 14 ) and/or power electronics ( 20 ).
7. The transmission coil ( 10 ) as claimed in claim 1 , characterized in that the carrier ( 17 ) comprises ducts ( 30 ) which are configured to have a cooling medium flowing therethrough.
8. A fixed charging station which is configured to inductively charge vehicles, comprising at least one transmission coil ( 10 ) embodied as a primary transmission coil, as claimed in claim 1 .
9. A vehicle which is configured to charge inductively, comprising at least one transmission coil ( 10 ) which is embodied as a secondary transmission coil, as claimed in claim 1 .
10. A system for inductively charging vehicles, comprising at least one primary transmission coil and at least one secondary transmission coil, wherein the transmission coils ( 10 ) are embodied as claimed in claim 1 .
11. The transmission coil as claimed in claim 1 , wherein the capacitors are located in a central region ( 13 ) of the coil arrangement ( 11 ) and are surrounded by the coil arrangement.
12. A transmission coil ( 10 ), comprising:
a carrier ( 17 );
a ferrite core ( 14 ) disposed on one side of the carrier;
power electronics ( 20 ) disposed in a central region on another side of the carrier; and
a coil arrangement ( 11 ) arranged on the carrier,
wherein the carrier ( 17 ) is configured to serve as a heat sink for capacitors ( 22 ), the coil arrangement ( 11 ), the ferrite core ( 14 ) and the power electronics ( 20 ).
13. The transmission coil ( 10 ) as claimed in claim 12 , characterized in that one of the capacitors ( 22 ) is assigned to an individual turn ( 12 ) and another of the capacitors is assigned to a group of at least two turns ( 12 ) of the coil arrangement ( 11 ).
14. The transmission coil ( 10 ) as claimed in claim 12 , characterized in that the carrier ( 17 ) is configured to serve as a shield for stray magnetic fields.
15. The transmission coil ( 10 ) as claimed in claim 12 , characterized in that the carrier ( 17 ) comprises ducts ( 30 ) which are configured to have a cooling medium flowing therethrough.
16. A transmission coil ( 10 ) configured to inductively transfer energy, comprising:
a carrier ( 17 ),
a coil arrangement ( 11 ) with a multiplicity of turns ( 12 ) arranged on the carrier ( 17 ), and
a capacitance formed by multiple capacitors ( 22 ) arranged on the carrier ( 17 ),
wherein at least one of the capacitors ( 22 ) is connected to at least two turns ( 12 ) of the coil arrangement ( 11 ).
17. The transmission coil as claimed in claim 16 , wherein the capacitors are located in a central region ( 13 ) of the transmission coil ( 10 ) and are surrounded by the coil arrangement ( 11 ).