Transmission coil for the inductive transfer of energy

Patent metadata

Field	Value
Publication number	US-2017259677-A1
Application number	US-201515509980-A
Country	US
Kind code	A1
Filing date	Jul 15, 2015
Priority date	Sep 10, 2014
Publication date	Sep 14, 2017
Grant date	—

Abstract

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

First claim

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 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 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 . A transmission coil ( 10 ), comprising at least two coil arrangements ( 11 ) arranged on a carrier.

6 . The transmission coil ( 10 ) as claimed in claim 5 , characterized in that the at least two coil arrangements ( 11 ) are connected to one another in opposite directions.

7 . 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.

8 . 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 ).

9 . 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.

10 . 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 .

11 . 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 .

12 . 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 .

13 . The transmission coil ( 10 ) as claimed in claim 5 , characterized in that the carrier ( 17 ) is configured to serve as a shield for stray magnetic fields.

14 . The transmission coil ( 10 ) as claimed in claim 5 characterized in that the carrier ( 17 ) is configured to serve as a heat sink for capacitors ( 22 ), the coil arrangement ( 11 ), a ferrite core ( 14 ) and/or power electronics ( 20 ).

15 . The transmission coil ( 10 ) as claimed in claim 5 , characterized in that the carrier ( 17 ) comprises ducts ( 30 ) which are configured to have a cooling medium flowing therethrough.

Assignees

• Bosch Gmbh Robert

Inventors

• Stewing Felix
• Diekhans Tobias

Classifications

• H02J50/005 Primary

  Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices · CPC title

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H01F27/288

  Shielding · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title