CONTACTLESS CHARGING OF AN ELECTRICAL ENERGY STORE OF A MOTOR VEHICLE

• US 20140292266A1
• Filed: 03/25/2014
• Published: 10/02/2014
• Est. Priority Date: 03/27/2013
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Eger, Ulrich, Herdeg, Wolfgang, Schmitz, Stefan
• Granted Patent: US 9,566,872 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 53/36 by positioning the vehicle
• 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

The invention relates to a charging apparatus for contactless charging of an electrical energy store (2) of a motor vehicle (1), comprising a primary unit (13) which is arranged outside the motor vehicle (1) and comprising a vehicle-mounted secondary unit (14). In order to simplify contactless charging of a motor vehicle comprising an electrical energy store, the vehicle-mounted secondary unit (14) can be moved relative to the primary unit (13), which is arranged outside the motor vehicle (1), in order to reduce the size of an air gap or distance (16) between the primary unit (13) and the secondary unit (14).

Claims

1. A charging apparatus for contactless charging of an electrical energy store of a motor vehicle, comprising:

a primary unit arranged outside the motor vehicle, and a vehicle-mounted secondary unit that can be moved relative to the primary unit to reduce a size of an air gap or distance between the primary unit and the secondary unit.

2. The charging apparatus of claim 1, further comprising a vehicle-mounted lowering device for moving the vehicle-mounted secondary unit toward the primary unit.

3. The charging apparatus of claim 2, wherein the vehicle-mounted lowering device comprises a fluid power device.

4. The charging apparatus of claim 2, wherein the vehicle-mounted lowering device comprises a pneumatic device.

5. The charging apparatus of claim 2, wherein the vehicle-mounted lowering device comprises an inflatable air chamber arranged, designed and coupled to the vehicle-mounted secondary unit so that a secondary coil of the vehicle-mounted secondary unit is moved toward a primary coil of the primary unit when the air chamber is inflated.

6. The charging apparatus of claim 1, wherein the vehicle-mounted lowering device comprises a prestressing device disposed for prestressing the vehicle-mounted secondary unit into an inoperative position.

7. The charging apparatus of claim 6, wherein the prestressing device comprises a spring device.

8. The charging apparatus of claim 1, wherein the vehicle-mounted secondary unit is arranged in an underbody region of the motor vehicle.

9. The charging apparatus of claim 1, wherein the primary unit is arranged in or on a floor on which the motor vehicle can be parked.

10. A motor vehicle comprising an electrical energy store and a vehicle-mounted secondary unit that can be moved relative to a primary unit of a charging apparatus arranged outside the motor vehicle to reduce the size of an air gap or distance between the primary unit and the secondary unit.

11. A method for contactless charging of an electrical energy store of a motor vehicle, comprising:

positioning the motor vehicle in proximity to a primary unit of a charging apparatus arranged outside the motor vehicle, moving a vehicle-mounted secondary unit toward the primary unit to reduce a size of an air gap or distance between the primary unit and the secondary unit.