Device for Transmitting Data Between a Data Transmission Device of a Vehicle and a Data Transmission Device of a Communications Network as Part of a Charging Process of an Electrical Energy Store of the Vehicle

• US 20160009190A1
• Filed: 09/21/2015
• Published: 01/14/2016
• Est. Priority Date: 03/22/2013
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: KAINDL, Michael, Schwaiger, Michael, Jahn, Christian, Thierauf, Harald
• Granted Patent: US 9,878,630 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/60 Monitoring or controlling charging stations
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: H04B 2203/5408 using protocols
• CPC Class Codes: H04B 2203/5458 Monitor sensor; Alarm systems
• CPC Class Codes: H04B 2203/5483 using coupling circuits
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/544 Setting up communications; Call and signalling arrangements
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals
• CPC Class Codes: H04L 12/283 Processing of data at an internetworking point of a home automation network
• CPC Class Codes: H04L 2012/2843 Mains power line
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• 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 90/12 Electric charging stations
• 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
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
• CPC Class Codes: Y04S 40/121 : using the power network as support for the transmission

Abstract

A device for transmitting data between a data transmission device of a vehicle and a data transmission device of a communications network, as part of a charging process of an electrical energy store of the vehicle, is disclosed. The vehicle data transmission device is based on a first communications protocol with a first signal level, while the communications network data transmission device is based on a second communications protocol with a second signal level. The device includes a signal-matching device having at least one first coupling transformer, which couples a data transmission device of a charging station to the data transmission devices of the vehicle and of the communications network via respective coils. The signal-matching device is configured to match the first signal level to the second signal level and vice versa.

Claims

1. A device for transmitting data between a data transmission device of a vehicle and a data transmission device of a communication network as part of a charging process of an electrical energy store of the vehicle, wherein the vehicle data transmission device is based on a first communication protocol having a first signal level, and the communication network data transmission device is based on a second communication protocol having a second signal level, wherein the device comprises a signal matching device with at least a first coupling transformer which, via at least one coil, couples a data transmission device of a charging station with the data transmission devices of the vehicle and of the communication network with one another, wherein the signal matching device is configured to match the first signal level to the second signal level and conversely to match the second signal level to the first signal level.

2. The device as claimed in claim 1, wherein the data transmission device of the charging station comprises a transmitting branch and a receiving branch which are each coupled with the at least one coil of the first coupling transformer.

3. The device as claimed in claim 1, in which the data transmission device of the vehicle is connected directly to one of the at least one coils of the first coupling transformer.

4. The device as claimed in claim 2, in which the data transmission device of the vehicle is connected directly to one of the at least one coils of the first coupling transformer.

5. The device as claimed in claim 1, in which the signal matching device comprises a second coupling transformer which is coupled via a damping device with one of the at least one coils of the first coupling transformer, wherein the data transmission device of the communication network is coupled with a coil of the second coupling transformer.

6. The device as claimed in claim 2, in which the signal matching device comprises a second coupling transformer which is coupled via a damping device with one of the at least one coils of the first coupling transformer, wherein the data transmission device of the communication network is coupled with a coil of the second coupling transformer.

7. The device as claimed in claim 3, in which the signal matching device comprises a second coupling transformer which is coupled via a damping device with one of the at least one coils of the first coupling transformer, wherein the data transmission device of the communication network is coupled with a coil of the second coupling transformer.

8. The device as claimed in claim 5, wherein the transmitting branch of the data transmission device of the charging station is coupled with a further coil of the second coupling transformer via an amplifier, wherein the amplifier, the second coupling transformer and the damping device form a first signal branch between the data transmission device of the charging station and the first coupling transformer, and wherein between the data transmission device of the charging station and the second coupling transformer, a second signal branch is provided which couples into the first coupling transformer in an opposite phase with respect to the first signal branch.

9. The device as claimed in claim 6, wherein the transmitting branch of the data transmission device of the charging station is coupled with a further coil of the second coupling transformer via an amplifier, wherein the amplifier, the second coupling transformer and the damping device form a first signal branch between the data transmission device of the charging station and the first coupling transformer, and wherein between the data transmission device of the charging station and the second coupling transformer, a second signal branch is provided which couples into the first coupling transformer in an opposite phase with respect to the first signal branch.

10. The device as claimed in claim 7, wherein the transmitting branch of the data transmission device of the charging station is coupled with a further coil of the second coupling transformer via an amplifier, wherein the amplifier, the second coupling transformer and the damping device form a first signal branch between the data transmission device of the charging station and the first coupling transformer, and wherein between the data transmission device of the charging station and the second coupling transformer, a second signal branch is provided which couples into the first coupling transformer in an opposite phase with respect to the first signal branch.

11. The device as claimed in claim 8, in which the second level matching branch comprises an amplifier, a third coupling transformer and a damping device, wherein a phase rotation is effected by rotating a direction of coupling-in at one of the at least one coil of the first coupling transformer.

12. The device as claimed in claim 8, in which the components of the first level matching branch and of the second level matching branch are of identical construction.

13. The device as claimed in claim 8, wherein the amplifiers of the first and of the second level matching branch are configured to amplify linearly in a predetermined frequency range.

14. The device as claimed in claim 1, wherein the second signal level is higher than the first signal level.

15. The device as claimed in claim 1, wherein the first communication protocol and the second communication protocol are based on a power line communication.

16. The device as claimed in claim 1, wherein the first communication protocol is Homeplug AV.

17. The device as claimed in claim 1, wherein the second communication protocol is Homeplug GreenPHY.