CHARGING STATION AND METHOD FOR CHARGING A PLUG-IN MOTOR VEHICLE AT A CHARGING POST

• US 20160375781A1
• Filed: 06/22/2016
• Published: 12/29/2016
• Est. Priority Date: 06/23/2015
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Herke, Dirk, Oestreicher, Ralf
• Granted Patent: US 10,131,239 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 53/31 Charging columns specially adapted for electric vehicles
• CPC Class Codes: B60L 53/53 Batteries
• CPC Class Codes: B60L 53/60 Monitoring or controlling charging stations
• 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 10/72 Electric energy management in electromobility
• 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

Abstract

A charging station (10) for charging a plug-in motor vehicle (24) at a charging post (12) has a power transformer (14) and rectifier modules (16). The power transformer (14) has terminal leads (18) that are DC-isolated on the secondary side. The terminal leads (18) are connected at least partially to the rectifier modules (16). The power transformer (14) and the rectifier modules (16) are configured so that the rectifier modules (16) emit a low DC voltage when the power transformer (14) is fed with a medium voltage.

Claims

1. A charging station for charging a plug-in motor vehicle at a charging post, comprising:

a power transformer and rectifier modules,

the power transformer has terminal leads that are DC-isolated on a secondary side,

the terminal leads connected at least partially to the rectifier modules, and

the power transformer and the rectifier modules are configured so that the rectifier modules emit a low DC voltage when the power transformer is fed with a medium voltage.

2. The charging station of claim 1, further comprising:

a buffer store with feedback capability, and

one of the terminal leads is connected to the buffer store.

3. The charging station of claim 1, further comprising a mains filter.

4. The charging station of claim 3, wherein the mains filter is a power factor correction filter of the rectifier modules.

5. The charging station of claim 1, further comprising an insulation monitor.

6. The charging station of claims 1, wherein the rectifier modules are combined to form a multi-pole busbar.

7. The charging station of claim 1, wherein the charging station is configured so that the low DC voltage is between 950 V and 2000 V when the medium voltage is 20 kV.

8. A method for charging a plug-in motor vehicle at a charging post, comprising:

feeding a charging station with a medium voltage,

emitting an unregulated low DC voltage from the charging station,

adapting the low DC voltage to the motor vehicle, and

charging the motor vehicle with the adapted low DC voltage.

9. The method of claim 8, wherein:

the low DC voltage is adapted in an infrastructure, and

the charging post provides the adapted low DC voltage.

10. The method of claim 8, wherein:

the charging post provides the unregulated low DC voltage, and

the low DC voltage is adapted by the motor vehicle.