Charging device for inductively charging an electrical energy store of a motor vehicle and method for operating a charging device

• US 20180236880A1
• Filed: 05/12/2016
• Published: 08/23/2018
• Est. Priority Date: 05/16/2015
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: ELIAS, Bjorn, PEER, Reinhard
• Granted Patent: US 10,926,650 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• 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

Abstract

A charging device for inductively charging an electrical energy store of a motor vehicle, having a primary coil, which is designed for inducing a voltage in a secondary coil of the motor vehicle for charging the electrical energy store, and having a lifting mechanism which is designed to move the primary coil between a stowage position and a charging position. A power electronics of the charging device is coupled in heat-conducting manner to the lifting mechanism.

Claims

1-10. -10. (canceled)

11. A charging device for inductively charging an electrical energy store of a motor vehicle, comprising;

a primary coil, which is designed for inducing a voltage in a secondary coil of the motor vehicle for charging the electrical energy store;

a lifting mechanism which is designed for moving the primary coil between a stowage position and a charging position, wherein a power electronics of the charging device is coupled in heat-conducting manner to the lifting mechanism.

12. The charging device according to claim 11, wherein the charging device has a heating unit, which is coupled in heat-conducting manner to the lifting mechanism.

13. The charging device according to claim 12, wherein the power electronics and the heating unit are arranged on an aluminum plate, on which the lifting mechanism is arranged.

14. The charging device according to claim 12, wherein the power electronics and the heating unit are arranged on a first aluminum plate, which is arranged on a second aluminum plate, on which the lifting mechanism is arranged.

15. The charging device according to claim 12, wherein the charging device includes a control unit, which is designed for operating the heating unit as a function of weather data provided.

16. The charging device according to claim 15, wherein the control unit is designed to activate the heating unit for a predetermined time prior to an upcoming charging process.

17. The charging device according to claim 15, wherein the control unit is designed to activate the heating unit if a force, which is larger than a predetermined force value, is exerted to move the lifting mechanism.

18. The charging device according to claim 15, wherein the control unit is designed to activate the heating unit if a charging current falls below a predetermined charging current value during the charging of an electrical energy store of a motor vehicle.

19. The charging device according to claim 15, wherein the control unit is designed to activate and deactivate the heating unit at predetermined cyclical intervals.

20. A method for operating a charging device according to claim 11, in which the lifting mechanism is heated by the waste heat of the power electronics.