System for the inductive charging of an energy accumulator of a vehicle, and charging station

• US 9,647,460 B2
• Filed: 11/03/2010
• Issued: 05/09/2017
• Est. Priority Date: 12/09/2009
• Status: Active Grant

• Current Assignee: Sew-Eurodrive GmbH & Company KG (BV Beteiligung GmbH & Company KG)
• Original Assignee: Sew-Eurodrive GmbH & Company KG (BV Beteiligung GmbH & Company KG)
• Inventors: Becker, Gnter, Degen, Dirk
• Primary Examiner(s): Grant, Robert
• Application Number:
  US13/515,265
• Publication Number:
  US 20120256586A1
• Time in Patent Office: 2,379 Days
• Field of Search: 320108, 320109, 439 762, 174 50, 307104
• 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 53/30 Constructional details of charging stations
• CPC Class Codes: H02J 1/082 Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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 system for the inductive charging of an energy accumulator of a vehicle, and a charging station, an electronic circuit being provided in the interior of a hood, the opening of which is situated at the bottom side of the hood.

Claims

1. A system for inductively charging an energy accumulator of a vehicle, comprising:

a housing having at least one downwardly depending first wall forming a top opening and a bottom opening, a cavity being formed in the housing bounded by the at least one first wall;

a cover coupled to a top surface of the housing to cover the top opening, the cover including at least one downwardly depending second wall located in the cavity when the cover covers the top surface of the housing, a top of the at least one second wall depending from a bottom surface of the cover, and an interface between the top of the at least one second wall and the bottom surface of the cover being fluid tight to form a hood having an opening at a bottom;

an electronic circuit arranged in an interior of the hood, the electronic circuit adapted to inductively charge the energy accumulator of the vehicle; and

at least one supply cable connected to the electronic circuit and passing through the at least one second wall in a fluid tight manner.

2. The system of claim 1, wherein the housing is a rectangular housing.

3. The system of claim 1, wherein the at least one downwardly depending first wall includes at least three downwardly depending first walls.

4. The system of claim 1, wherein the at least one downwardly depending second wall includes at least three downwardly depending second walls.

5. The system of claim 4, wherein the at least three downwardly depending second walls form a rectangle.

6. The system of claim 1, wherein the cover is coupled to the top surface of the housing by a hinge.

7. The system of claim 1, wherein the cover is coupled to the top surface of the housing by at least one screw.

8. The system of claim 1, wherein a height of the at least one second wall is less than a height of the at least one first wall.

9. The system of claim 1, wherein a height of the electronic circuit does not exceed half of a height of the at least one second wall.

10. The system of claim 1, wherein the at least one supply cable is provided in a looped-through fashion, and the electronic circuit is suppliable from a T-node.

11. The system of claim 1, wherein the cover includes a primary winding.

12. The system of claim 11, wherein the electronic circuit is adapted to impress an alternating current on the primary winding.

13. The system of claim 12, wherein the alternating current has a frequency between 10 KHz and 500 KHz.

14. The system of claim 13, wherein the alternating current has a frequency between 20 KHz and 30 KHz.

15. The system of claim 11, wherein the cover includes a support member, and wherein the at least one second wall is in fluid tight communication with a bottom side of the support member.

16. The system of claim 15, wherein the support member is composed of metal.

17. The system of claim 15, wherein the support member is composed of plastic.

18. The system of claim 15, wherein the cover includes a ferrite plate whose bottom side is disposed on a top side of the support member, and wherein the primary winding is disposed on a top side of the ferrite plate.

19. The system of claim 1, wherein the at least one supply cable is connected to a further system for inductively charging a further energy accumulator of a further vehicle.

20. The system of claim 19, wherein the system and the further system are electrically connected in series.

21. The system of claim 18, wherein a potting compound is provided between the primary winding and the ferrite plate.

22. The system of claim 15, wherein the vehicle includes a secondary winding to which a capacitor is connected in series or in parallel such that an associated resonant frequency corresponds substantially to a frequency of the alternating current impressed upon the primary winding.

23. The system of claim 1, wherein the cover is adapted to be driven over by a vehicle.

24. The system of claim 1, wherein the cover has a support member and/or a plate made of plastic, on a bottom side of which a ferrite plate is disposed, a primary winding being situated on a top side of the ferrite plate, so that the primary winding is positioned between the ferrite plate and the support member and/or the plastic plate, the primary winding being surrounded by a potting compound and/or a cured potting compound, a side wall and/or the hood being joined to the support member, the plastic plate, the potting compound and/or the ferrite plate.

25. The system of claim 24, wherein the ferrite plate has a multi-piece construction.

26. A charging station, comprising:

a plurality of systems recited in claim 1;

wherein the systems are suppliable in parallel from a public supply network via a supply line.