Electric power transmission device

• US 6,407,470 B1
• Filed: 04/24/2000
• Issued: 06/18/2002
• Est. Priority Date: 10/24/1997
• Status: Expired due to Fees

• Current Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Original Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Inventors: Seelig, Anton
• Primary Examiner(s): Jackson, Stephen W.
• Assistant Examiner(s): DEBERADINIS, ROBERT L
• Application Number:
  US09/530,020
• Time in Patent Office: 785 Days
• Field of Search: 191/10, 307/104, 307/9.1, 336/223
• US Class Current: 307/104
• CPC Class Codes: B60L 5/005 without mechanical contact between the collector and the power supply line
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10

Abstract

An electric power-transmission device having a primary conductor arrangement comprising at least two parallel primary conductors (PL) and at least one secondary winding arrangement that is electromagnetically coupled to the primary conductor arrangement, is mechanically separate from the primary conductor arrangement and can be moved in its longitudinal direction. The primary conductor arrangement and the secondary winding arrangement each comprise flat conductors having a small thickness (d_L) of a few millimeters and a large width side (b_L). The width sides of the primary conductors are disposed adjacently in one plane, and the secondary winding arrangement has at least one secondary coil (SS) that is embodied as a disk winding whose conductor width sides lie in one plane extends parrallel to the plane of the primary conductor arrangement.

Claims

1. An electric power-transmission device having a primary conductor arrangement comprising at least two parallel primary conductors and at least one secondary winding arrangement, which is electromagnetically coupled thereto, is mechanically separate from the primary conductor arrangement and can be moved in its longitudinal direction, and wherein:

the primary conductor arrangement and the secondary winding arrangement comprise flat conductors having a small thickness of a few millimeters and a large width side;

the width sides of the primary conductors are disposed adjacently in one plane; and

,

the secondary winding arrangement has at least one secondary coil that is embodied as a disk winding whose conductor width sides lie in one plane that extends parallel to the plane of the primary conductor arrangement.

2. The power-transmission device according to claim 1, wherein the device is a double-loop transmitter with a primary conductor arrangement having two adjacent conductor loops through which current flows in opposite directions.

3. The power-transmission device according to claim 1, wherein, on the side facing away from the primary conductor arrangement, the secondary winding arrangement has a magnetic yoke comprising ferrite.

4. The power-transmission device according to claim 3, wherein the magnetic yoke comprises a ferrite-plate base on which the at least one secondary coil is disposed.

5. The power-transmission device according to claim 1, wherein the primary conductor arrangement comprises at least three primary conductors, and the secondary winding arrangement comprises at least two adjacent secondary coils that are located approximately centrally opposite the primary conductor arrangement.

6. The power-transmission device according to claim 1, wherein the device includes at least two of said secondary coils that are embodied as respective disk windings and that have two spaced, parallel, straight winding segments (WA), which are located opposite a pair of parallel primary conductors.

7. The power-transmission device according to claim 1, wherein the primary conductor arrangement comprises one of a three conductor arrangement with a central conductor of the primary conductor arrangement possessing substantially the same conductor width of the two adjacent primary conductors, and two adjacent primary conductors of the same width through which current flows in the same direction;

and, the primary conductor arrangement and the secondary winding arrangement have approximately the same conductor width and the same total width.

8. The power-transmission device according to claim 7, wherein the conductor widths of the primary conductor arrangement and the secondary winding arrangement are selected such that one of the width of the central conductor and the total width of the secondary coils lying adjacently in the center of the secondary winding arrangement, is about equal to or greater than twice the distance between the respective planes of the primary and secondary winding arrangements.

9. The power-transmission device according to claim 1, wherein the primary conductors and the secondary coils comprise numerous thin individual wires that extend at a diagonal over the entire conductor width in a braiding.

10. The power-transmission device according to claim 1, wherein the secondary winding arrangement is disposed on the underside of a vehicle floor.

11. The power-transmission device according to claim 10, wherein an aluminum sheet is disposed between a magnetic yoke of the secondary winding arrangement and the underside of a vehicle floor.

12. The power-transmission device according to claim 1, wherein the secondary winding arrangement is embedded in a casting compound.

13. The power-transmission device according to claim 1, wherein the primary conductor arrangement is immovably fixed near the surface of a transport path.

14. The power-transmission device according to claim 1, wherein a magnetic yoke is disposed beneath the primary conductor arrangement and comprises ferrite waste.

15. The power-transmission device according to claim 1, further comprising a back-up battery connected to the secondary winding arrangement.