Installation

• US 7,969,045 B2
• Filed: 05/10/2007
• Issued: 06/28/2011
• Est. Priority Date: 05/30/2006
• 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: Habermaas, Martin, Markheiser, Tobias, Podbielski, Leobald, Schmidt, Josef
• Primary Examiner(s): Fureman; Jared J
• Assistant Examiner(s): AMAYA, CARLOS DAVID
• Application Number:
  US12/227,920
• Publication Number:
  US 20090160262A1
• Time in Patent Office: 1,510 Days
• Field of Search: 307/104, 307/9.1
• US Class Current: 307/104
• CPC Class Codes: H01F 2038/146 in combination with capacitive coupling
• CPC Class Codes: H01F 27/2847 Sheets; Strips H01F27/2866 takes precedence
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01F 41/063 with insulation
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type

Abstract

An installation for the non-contact transfer of energy includes at least one primary conductor system and a pick-up, including at least one secondary winding inductively coupled to the primary conductor system, the secondary winding including at least one flat ribbon cable, which has at least two electrical conductors extending in parallel, that are held at a distance from each other and are insulated with respect to each other, the secondary winding being made up of part windings, which in each case are formed from one of the electrical conductors, each of the part windings, together with an associated capacitance, forming a series resonant circuit, whose resonant frequency corresponds substantially to the medium frequency of the primary current.

Claims

1. An installation for non-contact transfer of energy, comprising:

at least one primary conductor system; and

a pick-up including at least one secondary winding inductively coupled to the primary conductor system;

wherein the secondary winding includes at least one flat ribbon cable having at least two electrical conductors extending in parallel, held at a distance from each other, and insulated with respect to each other, the secondary winding including part windings, each formed from one of the electrical conductors, each part winding, together with an associated capacitor, forming a series resonant circuit having a resonant frequency that substantially corresponds to a medium frequency of a primary current.

2. The installation according to claim 1, wherein the series resonant circuits are provided as a series connection corresponding to the pick-up.

3. The installation according to claim 1, wherein the secondary winding includes at least two flat ribbon cables alternating in periodic sequence from inside to outside.

4. The installation according to claim 1, wherein the electrical conductors include litz-wire lines having individual stranded wires insulated with respect to each other.

5. The installation according to claim 1, wherein the secondary winding, together with a coil core as well as the capacitors for forming a capacitance connected electrically to the secondary winding, are surrounded by a housing.

6. The installation according to claim 5, wherein the housing includes housing parts.

7. The installation according to claim 5, wherein the housing includes housing parts and at least one of (a) is leak-proof, (b) is detachably connectable, and (c) provides a high degree of protection.

8. The installation according to claim 5, wherein the coil core at least one of (a) is formed of ferrite, (b) is assembled from a plurality of ferrite parts, and (c) is assembled from a plurality of identical ferrite parts.

9. The installation according to claim 8, wherein at least one of (a) the coil core includes at least one kind of ferrite part and (b) the coil core includes ferrite parts adhesively joined together.

10. The installation according to claim 5, wherein the secondary winding surrounds the coil core, and ferrite plates adapted to reduce a stray field are provided at an outer surface of the secondary winding.

11. The installation according to claim 5, wherein the coil core is at least one of (a) U-shaped, (b) C-shaped, and (c) E-shaped.

12. The installation according to claim 5, wherein the coil core is at least one of (a) U-shaped, (b) C-shaped, and (c) E-shaped, ends of limbs of the coil core being widened.

13. The installation according to claim 5, wherein insulating bodies are provided at least one of (a) between printed circuit boards and (b) between printed circuit boards and the coil core.

14. The installation according to claim 5, wherein the housing is formed of at least one of (a) a metal and (b) aluminum.

15. The installation according to claim 5, wherein a potting compound is provided in an interior of the housing.

16. The installation according to claim 1, wherein the pick-up includes an electrical connection to a load that is suppliable with energy from the pick-up.

17. The installation according to claim 1, wherein the capacitors are disposed on at least one printed circuit board having printed circuit traces electrically connected to the secondary winding.

18. The installation according to claim 1, wherein the ribbon cable is wound up in at least one of (a) a spiral shape and (b) a rectangular-spiral shape.

19. The installation according to claim 1, wherein to each capacitor assigned to a first part winding, another part winding is connected in series, the part windings being disposed at least one of (a) in spatial proximity and (b) adjacent to each other.

20. The installation according to claim 1, wherein to each capacitance assigned to a first part winding, another part winding is connected in series, the first part winding being assigned to a first flat ribbon cable and the other part winding being assigned to another flat ribbon cable.

21. The installation according to claim 20, wherein the primary conductors in a direction of an axis of the secondary winding have a distance to a coil core that is smaller than a distance of two limbs of the coil core to each other.

22. The installation according to claim 20, wherein a section of a coil core is E-shaped, such that a middle limb and two outer limbs are provided on back parts disposed in at least one of (a) one plane and (b) a direction of a normal of a sectional plane of the coil core extending in a direction of extended primary conductors.

23. The installation according to claim 1, wherein the pick-up is arranged to allow travel along at least one of (a) an extended primary conductor, (b) a go conductor, and (c) and return conductor.