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

Patent metadata

Field	Value
Publication number	US-10926650-B2
Application number	US-201615574248-A
Country	US
Kind code	B2
Filing date	May 12, 2016
Priority date	May 16, 2015
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

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.

First claim

The invention claimed is:

1. 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; a heating unit; and
a heat-conductive baseplate, wherein a power electronics of the charging device, the heating unit, and the lifting mechanism are all each arranged on the heat-conductive baseplate,
wherein the power electronics and the heating unit are coupled in a heat-conducting manner through the heat-conductive baseplate to the lifting mechanism,
wherein the charging device includes a control unit which receives a signal indicating a specific motor vehicle is approaching the charging device and receives weather data detected by a sensor unit proximate to the charging device,
wherein the control unit activates the heating unit a predetermined time before an arrival of the specific motor vehicle if:
a level of humidity measured by the sensor unit is higher than a predetermined threshold value; and
a temperature measured by the sensor unit is lower than a limit temperature.

2. The charging device according to claim 1 , wherein the heat-conductive baseplate is formed from aluminum.

3. The charging device according to claim 1 , 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.

4. The charging device according to claim 1 , 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.

5. The charging device according to claim 1 , 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.

6. The charging device according to claim 1 , wherein the control unit is designed to activate and deactivate the heating unit at predetermined cyclical intervals.

7. A method for operating a charging device according to claim 1 , in which the lifting mechanism is heated by the waste heat of the power electronics.

Assignees

• Audi Ag

Inventors

• Elias Björn
• Peer Reinhard

Classifications

• B60L53/38 Primary

  specially adapted for charging by inductive energy transfer · CPC title

• B60L53/12 Primary

  Inductive energy transfer · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title