Inductive charging device, electric vehicle, charging station, and method for inductive charging

• US 10,069,336 B2
• Filed: 05/23/2014
• Issued: 09/04/2018
• Est. Priority Date: 06/28/2013
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Fackelmeier, Andreas, Kurz, Fabian, Muller, Dominikus Joachim, Muller, Reiner, Nagel, Robert, Poprawa, Florian
• Primary Examiner(s): Diao, M'Baye
• Application Number:
  US14/901,608
• Publication Number:
  US 20160372955A1
• Time in Patent Office: 1,565 Days
• Field of Search: 320108
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 13/24 constituted by a dielectric or ferromagnetic rod or pipe H01Q13/28 takes precedence
• CPC Class Codes: H01Q 21/062 using dipole aerials; H01Q21/067, H01Q21/068 take precedence
• CPC Class Codes: H01Q 9/0485 Dielectric resonator antennas
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

The invention relates to an inductive charging device having at least one inductive charging coil wound about a coil axis, and an electric or dielectric antenna, which is arranged at a location that is shifted parallel to the coil axis in relation to a location of a region of the charging coil, a location within the at least one charging coil, or a location between the charging coils. The electric vehicle and the charging station each have such an inductive charging device. With the method, one or two such inductive charging devices are used, wherein by means of the inductive charging coils, energy is transmitted, and by means of the antennas, communications data are transmitted.

Claims

1. An inductive charging device comprising:

at least one inductive charging coil wound around a coil axis;

an electric or dielectric antenna that is arranged;

in or on the at least one inductive charging coil,

within the at least one inductive charging coil,

between charging coils of the at least one inductive charging coil,

at a location that is displaced in parallel to the coil axis of one or more charging coils of the at least one inductive charging coil in relation to a location in a given region of the one charging coil, in relation to a location within the one charging coil, in relation to a location between the charging coils, or in relation to any combination thereof, or

any combination thereof; and

electromagnetic field screening for the at least one inductive charging coil and the electric or dielectric antenna,

wherein both the at least one inductive charging coil and the electric or dielectric antenna are arranged on a same side of the electromagnetic field screening.

2. The inductive charging device of claim 1, wherein the inductive charging device forms a primary side of an inductive charging system.

3. The inductive charging device of claim 1, wherein the inductive charging device forms a secondary side of an inductive charging system.

4. The inductive charging device of claim 1, wherein the electric or dielectric antenna is arranged at a location that is displaced, in parallel to the coil axis, in relation to a location of the geometrical center of gravity of a charging coil interior, at a location of the geometrical center of gravity of a charging coil interior, or in relation to a location of the geometrical center of gravity of a charging coil interior and at a location of the geometrical center of gravity of a charging coil interior.

5. The inductive charging device of claim 1, wherein the electric or dielectric antenna is an electric antenna, and

wherein the electric antenna comprises at least one dipole antenna, the at least one dipole antenna comprising one or more dipoles.

6. The inductive charging device of claim 1, wherein the electric or dielectric antenna is a dielectric antenna, and

wherein the dielectric antenna comprises at least one waveguide.

7. The inductive charging device of claim 6, wherein the electromagnetic field screening comprises a penetration, through which the waveguide is routed.

8. The inductive charging device of claim 1, wherein the electric or dielectric antenna is a dielectric antenna, and

wherein the dielectric antenna is or is provided with a dielectric resonator antenna.

9. The inductive charging device of claim 1, wherein the electromagnetic field screening extends to both the at least one inductive charging coil and the electric or dielectric antenna.

10. An electric vehicle comprising:

an inductive charging device comprising;

at least one inductive charging coil wound around a coil axis; and

an electric or dielectric antenna that is arranged;

in or on the at least one inductive charging coil,

within the at least one inductive charging coil,

between charging coils of the at least one inductive charging coil,

at a location that is displaced in parallel to the coil axis of one or more charging coils of the at least one inductive charging coil in relation to a location in a given region of the one charging coil, in relation to a location within the one charging coil, in relation to a location between the charging coils, or in relation to any combination thereof, or

any combination thereof; and

electromagnetic field screening for the at least one inductive charging coil and the electric or dielectric antenna,

wherein both the at least one inductive charging coil and the electric or dielectric antenna are arranged on a same side of the electromagnetic field screening.

11. The electric vehicle of claim 10, wherein the electromagnetic field screening extends to both the at least one inductive charging coil and the electric or dielectric antenna.

12. A charging station comprising:

an inductive charging device comprising;

at least one inductive charging coil wound around a coil axis; and

an electric or dielectric antenna that is arranged;

in or on the at least one inductive charging coil,

within the at least one inductive charging coil,

between charging coils of the at least one inductive charging coil,

at a location that is displaced in parallel to the coil axis of one or more charging coils of the at least one inductive charging coil in relation to a location in a given region of the one charging coil, in relation to a location within the one charging coil, in relation to a location between the charging coils, or in relation to any combination thereof, or

any combination thereof; and

electromagnetic field screening for the at least one inductive charging coil and the electric or dielectric antenna,

wherein both the at least one inductive charging coil and the electric or dielectric antenna are arranged on a same side of the electromagnetic field screening.

13. The charging station of claim 12, wherein the electromagnetic field screening extends to both the at least one inductive charging coil and the electric or dielectric antenna.

14. A method for inductive charging using one or two charging devices, each of the one or two charging device comprising at least one inductive charging coil wound around a coil axis, and an electric or dielectric antenna that is arranged:

in or on the at least one inductive charging coil,

within the at least one inductive charging coil,

between charging coils of the at least one inductive charging coil,

at a location that is displaced in parallel to the coil axis of one or more charging coils of the at least one inductive charging coil in relation to a location in a given region of the one charging coil, in relation to a location within the one charging coil, in relation to a location between the charging coils, or in relation to any combination thereof, or

any combination thereof, and

electromagnetic field screening for the at least one inductive charging coil and the electric or dielectric antenna, wherein both the at least one inductive charging coil and the electric or dielectric antenna are arranged on a same side of the electromagnetic field screening,

the method comprising;

transmitting, by the at least one inductive charging coil, energy to one of the charging devices; and

transmitting, by the electric or dielectric antenna, communication data to one of the charging devices, respectively.

15. The method of claim 14, wherein the electromagnetic field screening extends to both the at least one inductive charging coil and the electric or dielectric antenna.