WIRELESS COUPLING FOR COUPLING A VEHICLE WITH AN ELECTRONIC DEVICE DISPOSED IN AN INTERIOR PART OF THE VEHICLE

• US 20190001827A1
• Filed: 06/26/2018
• Published: 01/03/2019
• Est. Priority Date: 07/03/2017
• Status: Abandoned Application

• Current Assignee: Grupo Antolin-Ingeniería, S.A.U.
• Original Assignee: Grupo Antolin-Ingeniería, S.A.U.
• Inventors: PEREZ VALLEJO, Alvaro, GARCIA PEREZ, Oscar
• Application Number:
  US16/019,048
• Publication Number:
  US 20190001827A1
• Time in Patent Office: Days
• 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: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/43 Antennas
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/77 for interrogation
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 4/046 involving vehicles, e.g. floating traffic data [FTD] or vehicle traffic prediction
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• 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

A wireless coupling for simultaneously communicating with a vehicle and feeding from said vehicle an electronic device disposed in a vehicle interior part disposed inside the vehicle, by means of an NFC technology. The coupling includes a first-end powering transceiver located in a fixed position within the vehicle, having: a connection component electrically connectable to a wiring system of the vehicle, a first end ECU, first-end RF transceiving component, a first-end EMC filter, and a first-end antenna showing certain first-end impedance Zx. It also includes a second-end powered transceiver configured to be disposed in a vehicle part in which the electronic device is disposed. The second-end powered transceiver includes second-end RF transceiving component and a second-end antenna showing certain second-end impedance Zy. The wireless coupling includes a matching circuit with an impedance Zc and connected to the first-end or the second-end antenna, this first-end or second-end antenna having a first-end or a second-end antenna design impedance Z_2da, respectively more inductive than the corresponding theoretical first-end or second-end antenna impedance Z_2ta, such that the combination of the design first-end or design second-end antenna impedance Z_2da and the impedance Z_C of the matching circuit matches the theoretical first-end or the theoretical second-end antenna impedance Z_2ta.

Claims

1. A wireless coupling, based on NFC technology, working at a given transmission frequency, for coupling a vehicle with an electronic device disposed in a vehicle interior part for simultaneously feeding said electronic device from said vehicle, and data exchanging between both of them, the wireless coupling comprising:

a first-end powering transceiver located in a fixed position within the vehicle and showing certain first-end impedance Z₁ when working at the transmission frequency, the first-end powering transceiver comprising

connection means electrically connectable to a wiring system of the vehicle,

a first-end ECU,

a first-end RF transceiving means,

a first-end EMC filter, and

a first-end antenna with a theoretical first-end antenna impedance Z_1ta at the transmission frequency;

a second-end powered transceiver configured to be disposed in the vehicle interior part in which said electronic device is disposed, said electronic device being connected to the second-end powered transceiver and showing certain second-end impedance Z₂ when working at the transmission frequency, said second-end powered transceiver being configured to operate in a radiofrequency range emitted by the first-end antenna of the first-end powering transceiver, the second end powered transceiver comprising

a second-end RF transceiving means, and

a second-end antenna with a theoretical second-end antenna impedance Z_2ta at the transmission frequency;

wherein the wireless coupling further comprises a matching circuit with an impedance Zc, said matching circuit being arranged to compensate any deviation from the theoretical first-end antenna impedance Z_1ta, or from the theoretical second-end antenna impedance Z_2ta, due to real working conditions, the matching circuit being connected to the first-end antenna or to the second-end antenna, the first-end antenna or the second-end antenna (202), having respectively a first-end antenna design impedance Z_1da or a second-end antenna design impedance Z_2da, more inductive than the corresponding theoretical first-end antenna impedance Z_1ta or than the theoretical second-end antenna impedance Z_2ta, such that the combination of the design first-end antenna impedance Z_1da, or of the design second-end antenna impedance Z_2da, and the impedance Zc of the matching circuit matches the theoretical first-end antenna impedance Z_1ta or the theoretical second-end antenna impedance Z_2ta.

2. The wireless coupling of claim 1, wherein the second-end powered transceiver comprises a second-end ECU.

3. The wireless coupling of claim 1 wherein the vehicle interior part is detachable from the vehicle.

4. The wireless coupling of claim 1, wherein the data exchanging between the first-end powering transceiver and the second-end powered transceiver comprises data and/or instructions transmission from the vehicle to the electronic device of the vehicle interior part.

5. The wireless coupling of claim 1, wherein the data exchanging between the second-end powered transceiver and the first-end powering transceiver comprises data and/or instructions transmission from the electronic device of the vehicle interior part to the vehicle.

6. The wireless coupling of claim 1, wherein the first-end powering transceiver and the second-end powered transceiver are configured to exchange data and/or instructions in a bidirectional way.

7. The wireless coupling of claim 1, wherein the first-end powering transceiver is configured to passively detect and/or identify the second-end powered transceiver, when they are coupled to each other.

8. The wireless coupling according to claim 7, wherein the first-end powering transceiver is configured to passively identify the second-end powered transceiver as a RFID tag.

9. The wireless coupling according to of claim 1, wherein said first-end antenna and/or said second-end antenna are respectively implemented by means of a loop.

10. The wireless coupling of claim 1, wherein the second-end powered transceiver comprises a memory configured to store data related to the second-end powered transceiver and/or to the electronic device.

11. The wireless coupling of claim 1, wherein the second-end powered transceiver comprises a battery configured to be rechargeable from power of the RF signal emitted by the first-end antenna of the first-end powering transceiver.

12. The wireless coupling of claim 1, wherein the impedance matching circuit is self-adjusting, tuning its capacitive impedance to compensate any mismatch related to impedance variations due to design, environmental, or ageing factors.

13. The wireless coupling of claim 1, wherein the impedance matching circuit is comprised in the first-end powering transceiver.

14. The wireless coupling of claim 1, wherein the first-end powering transceiver comprises a ferrite configured close to the first-end antenna to confine the electromagnetic field emitted by the first-end powering transceiver towards the second-end antenna.

15. The wireless coupling of claim 1, wherein the first-end antenna is longer than the second-end antenna, configured for either, admitting different positions of a single second-end antenna, or simultaneously coupling several second-end antennas.

16. The wireless coupling of claim 1, wherein the first-end powering transceiver comprises a plurality of first-end antennas, covering a surface larger than that of the second-end antenna, configured for either, admitting different positions of a single second-end antenna, or simultaneously coupling several second-end antennas.

17. A vehicle comprising a vehicle part comprising an electronic device, the vehicle further comprising the wireless coupling of claim 1, wherein said first-end powering transceiver is located in a fixed position within the vehicle and said second-end powered transceiver is attached to said vehicle interior part.