INDUCTIVE CHARGING DEVICE FOR A PORTABLE APPARATUS INCORPORATING A NEAR-FIELD COMMUNICATION ANTENNA

• US 20130093387A1
• Filed: 09/06/2012
• Published: 04/18/2013
• Est. Priority Date: 10/12/2011
• Status: Active Grant

• Current Assignee: Continental Automotive France (Continental AG), Continental Automotive GmbH (Continental AG)
• Original Assignee: Continental Automotive France (Continental AG), Continental Automotive GmbH (Continental AG)
• Inventors: VASSILIEFF, Youri, TAKACS, Alexandru, CHEIKH, Mohamed
• Granted Patent: US 9,124,142 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• 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: H01F 2038/143 for signals
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• 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 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An inductive charging device (20) for a portable apparatus for an automobile vehicle including at least one charging antenna (70) for inductive charging of the WPC type having a cut-out at its center (62) together with one communication antenna (60) for near-field communication of the NFC type, situated around the at least one charging antenna, along the sides of the charging device (Z1, Z2, Z3, Z4) and including at least one winding, the device being such that:

• • on at least one of the sides of the charging device, the communication antenna forms at least one loop (B) having at least one crossing point (61) on its base, the communication antenna having at least an upper part (63) surrounding the center of the cut-out of the charging antenna,
  • the upper part of the loop of the communication antenna surrounding the center of the cut-out has at least one winding.

Claims

1. An inductive charging device (20) for a portable apparatus (30) for an automobile vehicle comprising at least:

one antenna for inductive charging, called charging antenna (70), having a cut-out at its center (62) and,

one antenna for communicating, called communication antenna (60), disposed around at least the charging antenna (70), along sides of the charging device (Z1, Z2, Z3, Z4) and comprising at least one winding,

said device being characterized in that;

on at least one of the sides (Z4) of the charging device (20), the communication antenna (60) forms at least one loop (B) having at least one crossing point (61) on its base, the loop of said communication antenna having at least one upper part (63) surrounding the center of the cut-out (62) of the charging antenna (70),

the upper part (63) of the loop (B) of the communication antenna (60) surrounding the center of the cut-out (62) has at least one winding.

2. The device as claimed in claim 1, characterized in that the crossing point (61) and the upper part (63) of the communication antenna (60) are symmetrical with respect to an axis (Y) passing through the charging device at its center (O) and perpendicular to the side (Z4).

3. The device as claimed in claim 1, characterized in that the number of crossing points (61) is odd.

4. The device as claimed in claim 1, characterized in that the number of windings on the upper part (63) of the communication antenna (60) surrounding the center of the cut-out (62) is greater than the number of windings on the communication antenna (60) situated around the charging antenna (70).

5. The device as claimed in claim 1, characterized in that the charging device (20) furthermore comprises a ferrite (80), situated substantially underneath the charging antenna (70) and whose surface area is substantially greater than the surface area of the charging antenna (70).

6. The device as claimed in claim 1, characterized in that the device comprises a plurality of charging antennas (70a, 70b, 70c) and in that the communication antenna (60) forms at least one loop (B) having, on its base, at least one crossing point (61a, 61b, 61c) and whose upper parts (63a, 63b, 63c) respectively surround the center of each cut-out (62a, 62b, 62c) of each charging antenna (70a, 70b, 70c).

7. The device as claimed in claim 6, characterized in that the plurality of charging antennas (70a, 70b, 70c) is aligned along an axis (Y) passing through them and perpendicular to the side (Z4) on which the loop (B) of the communication antenna (60) is located.

8. The device as claimed in claim 6, characterized in that:

the charging antennas (70a, 70b, 70c) are aligned along an axis (X) passing through them,

the communication antenna (60) has a plurality of loops (B1, B2, B3) each having at least one crossing point (61a, 61b, 61c) and whose upper parts (63a, 63b, 63c) respectively surround the center of each cut-out (62a, 62b, 62c),

and the axis (X) is parallel to the side (Z4) on which the plurality of loops (B1, B2, B3) is located.

9. An automobile vehicle comprising an inductive charging device (20) as claimed in claim 1.

10. The device as claimed in claim 2, characterized in that the number of crossing points (61) is odd.

11. The device as claimed in claim 2, characterized in that the number of windings on the upper part (63) of the communication antenna (60) surrounding the center of the cut-out (62) is greater than the number of windings on the communication antenna (60) situated around the charging antenna (70).

12. The device as claimed in claim 2, characterized in that the charging device (20) furthermore comprises a ferrite (80), situated substantially underneath the charging antenna (70) and whose surface area is substantially greater than the surface area of the charging antenna (70).

13. The device as claimed in claim 2, characterized in that the device comprises a plurality of charging antennas (70a, 70b, 70c) and in that the communication antenna (60) forms at least one loop (B) having, on its base, at least one crossing point (61a, 61b, 61c) and whose upper parts (63a, 63b, 63c) respectively surround the center of each cut-out (62a, 62b, 62c) of each charging antenna (70a, 70b, 70c).

14. The device as claimed in claim 13, characterized in that the plurality of charging antennas (70a, 70b, 70c) is aligned along an axis (Y) passing through them and perpendicular to the side (Z4) on which the loop (B) of the communication antenna (60) is located.

15. The device as claimed in claim 13, characterized in that:

the charging antennas (70a, 70b, 70c) are aligned along an axis (X) passing through them,

the communication antenna (60) has a plurality of loops (B1, B2, B3) each having at least one crossing point (61a, 61b, 61c) and whose upper parts (63a, 63b, 63c) respectively surround the center of each cut-out (62a, 62b, 62c),

and the axis (X) is parallel to the side (Z4) on which the plurality of loops (B1, B2, B3) is located.