METHOD FOR CHARGING A TRACTION BATTERY, DEVICE FOR TRANSMITTING ENERGY TO AN ELECTRIC VEHICLE AND ELECTRIC VEHICLE

• US 20140139181A1
• Filed: 06/14/2012
• Published: 05/22/2014
• Est. Priority Date: 07/22/2011
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Peer, Reinhard, Elias, Bjorn
• Granted Patent: US 8,933,663 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/34 Plug-like or socket-like devices specially adapted for contactless inductive charging of electric vehicles positioning means for charging devices using inductive energy transfer B60L53/38
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• 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 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

In a device for transmitting energy to the electric vehicle a first rotating disc is provided on a parking space, which turning disc can be rotated about a rotational axis by means of a drive device. Arranged on the rotating disc is a positioning device by means of which an energy output device can be positioned on the first rotating disc, as a result of which a radial distance between the output device and the first rotational axis can be changed.

Claims

1-13. -13. (canceled)

14. A device for transmitting energy to an electric vehicle, comprising:

a parking place for parking the electric vehicle;

a first rotating disc arranged on a bottom of the parking place;

a first drive device constructed to rotate the first rotating disc about a first rotation axis;

a positioning device arranged on the first rotating disc; and

an output device for outputting the energy, said output device arranged on the positioning device and movable by the positioning device on the first rotating disc.

15. The device of claim 14, wherein the positioning device is completely arranged within an outer circumference of the first rotating disc.

16. The device of claim 14, further comprising a second drive device, said positioning device comprising a second rotating disk, said output device being arranged on the second rotating disc and rotatable about a rotation axis of the second rotating disc by the second drive device, and wherein a diameter of the second rotating disc is greater than a radius of the first rotating disk.

17. The device of claim 14, wherein the output device is movable exclusively in a plane parallel to the bottom of the parking place by the first rotating disc and the positioning device.

18. The device of claim 16, wherein the first drive device for the first rotating disc and/or the drive device for the positioning device are constructed to transmit a respective drive force respectively generated by the first and second drive device onto the first and second rotating disc via frictional coupling.

19. The device of claim 14, wherein the output device includes a primary coil for generating an alternating magnetic field.

20. The device of claim 19, wherein the primary coil is configured rotation symmetrical.

21. A motor vehicle, comprising:

a traction battery for storing electric energy for an electric drive motor of the motor vehicle;

a charging device configured for charging the traction battery, said charging device comprising a secondary coil for converting a magnetic field generated outside the motor vehicle into an alternating voltage; and

a pivotal conducting device constructed for supplying the alternating magnetic field to the secondary coil.

22. The motor vehicle of claim 21, further comprising a soft magnetic coil core in surrounding relationship with the secondary coil, wherein the secondary coil and the soft magnetic coil core are fixedly supported in the motor vehicle.

23. The motor vehicle of claim 21, wherein the conducting device includes two bodies which are magnetically insulated against each other and which are each made of a highly magnetically permeable material.

24. The motor vehicle of claim 21, wherein the conducting device is arranged on a bottom of the motor vehicle.

25. The motor vehicle of claim 21, wherein the conducting device includes an electrically conducting return conductor configured to galvanically couple the motor vehicle during the charging of the traction battery with an environment of the motor vehicle to prevent a static charge of the motor vehicle.

26. A method for charging a traction battery of an electrically drivable motor vehicle with energy, comprising:

parking the motor vehicle above an energy-output device;

orienting the energy output device relative to an energy receiving device of the motor vehicle and in a plane parallel to a bottom of the motor vehicle;

lowering a part of the energy receiving device from the bottom of the motor vehicle to the energy delivery device; and

coupling the energy receiving device with the energy delivery device and transmitting the energy into the motor vehicle by the coupled energy receiving device and the energy delivery device.