COIL ASSEMBLY FOR INDUCTIVE ENERGY TRANSMISSION, INDUCTIVE ENERGY-TRANSMISSION DEVICE, AND METHOD FOR MANUFACTURING A COIL ASSEMBLY FOR INDUCTIVE ENERGY TRANSMISSION

• US 20170243691A1
• Filed: 07/28/2015
• Published: 08/24/2017
• Est. Priority Date: 10/16/2014
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Stewing, Felix, Diekhans, Tobias
• Application Number:
  US15/519,267
• Publication Number:
  US 20170243691A1
• Time in Patent Office: Days
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: H01F 2027/2809 on stacked layers
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/34 Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
• CPC Class Codes: H01F 27/40 Structural association with built-in electric component, e.g. fuse
• CPC Class Codes: H01F 29/02 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
• 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 41/041 Printed circuit coils apparatus or processes for manufacturing printed circuits in general H05K3/00
• 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 50/23 characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas

Abstract

The invention relates to a coil assembly (1) for inductive energy transmission, comprising: an electrically non-conductive substrate (2), which has a first side (10) and a second side (11); a plurality of conducting tracks (30), which are arranged on the first side (10) and on the second side (11) of the substrate (2) and which form a coil (50) for inductive energy transmission; a plurality of vias (4) in the substrate (2) for feeding the conducting tracks (30) through the substrate (2); wherein at least two of the plurality of conducting tracks (30) are arranged in a twisted manner in relation to each other in the substrate (2). The invention further relates to an energy transmission device and to a method for producing a coil assembly (1) for inductive energy transmission.

Claims

1. A coil assembly (1) for inductive energy transmission, comprising

an electrically non-conductive substrate (2) which has a first side (10) and a second side (11);

a plurality of strip conductors (30) which are disposed on the first side (10) and on the second side (11) of the substrate (2), and which form a coil (50) for inductive energy transmission; and

a plurality of vias (4) in the substrate (2) for routing the strip conductors (30) through the substrate (2);

wherein at least two of the plurality of strip conductors (30) are disposed in a twisted manner in relation to each other in the substrate (2).

2. The coil assembly (1) as claimed in claim 1, wherein the substrate (2) is formed from multiple substrate segments (20;

21;

22;

24;

25).

3. The coil assembly (1) as claimed in claim 2, wherein the substrate segments are circular segments.

4. The coil assembly (1) as claimed in claim 1, wherein the substrate (2) comprises a strip conductor section (31) which is configured for the variable interconnection of the strip conductors (30).

5. The coil assembly (1) as claimed in claim 4, wherein the strip conductor section (31) comprises active switches (35) for adjusting a number of windings and/or a winding cross-section of the coil (50), in order to allow for a variable interconnection.

6. The coil assembly (1) as claimed in claim 2, wherein capacitors (8) for interconnecting the strip conductors (30) of the substrate segments (20;

21) are disposed between at least two adjacent substrate segments (20;

21).

7. The coil assembly (1) as claimed in claim 1, wherein the substrate (2) comprises multiple substrate layers (25;

26), and the strip conductors (30) are formed on both sides of the individual substrate layers (25;

26).

8. The coil assembly (1) as claimed in claim 1, wherein capacitors (8) are disposed on the substrate (2), the capacitors being configured for the reactive power compensation of the coil (50).

9. An inductive energy transmission device (100), comprising at least one coil assembly (1) as claimed in claim 1.

10. A method for manufacturing a coil assembly (1) for inductive energy transmission as claimed in claim 1, having the following method steps of:

providing the electrically non-conductive substrate (2) which has the first side (10) and the second side (11); and

forming the plurality of strip conductors (30) on the first side (10) and on the second side (11) of the substrate (2) for forming the coil (50) for inductive energy transmission.

11. The coil assembly (1) as claimed in claim 1, wherein one of the substrate segments (25) comprises a strip conductor section (31) which is configured for the variable interconnection of the strip conductors (30).

12. The coil assembly (1) as claimed in claim 11, wherein the strip conductor section (31) comprises active switches (35) for adjusting a number of windings and/or a winding cross-section of the coil (50), in order to allow for a variable interconnection.