CHARGING STATION FOR AN ELECTRICALLY POWERED VEHICLE, AND CHARGING METHOD

• US 20150091516A1
• Filed: 09/29/2014
• Published: 04/02/2015
• Est. Priority Date: 09/27/2013
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: BLUM, MANUEL, KOMMA, THOMAS, MANTEL, MIRJAM, POEBL, MONIKA
• Granted Patent: US 10,696,169 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2260/58 Departure time prediction
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/52 Wind-driven generators
• CPC Class Codes: B60L 53/53 Batteries
• CPC Class Codes: B60L 53/54 Fuel cells
• CPC Class Codes: B60L 53/57 Charging stations without connection to power networks
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

A charging station for an electrically powered vehicle has a connection for an electrical energy source, an inverter and an electronic coil connected to the inverter for wireless energy-transferring coupling of the electrically powered vehicle. The inverter is configured to apply an alternating electric voltage to the electronic coil in resonant operation. The electronic coil is connected to the inverter by way of a compensating circuit with a settable passive electronic energy storage device. The compensating circuit is configured to set a frequency of the alternating voltage by means of the settable passive electronic energy storage device.

Claims

1. A charging station for an electrically powered vehicle, the charging station comprising:

a connection for an electrical energy source and an inverter connected to said connection for the electrical energy source;

an electronic coil configured for wireless energy-transfer coupling of the electrically powered vehicle;

said inverter being configured to apply an alternating electric voltage to said electronic coil in resonant operation; and

a compensating circuit having a settable passive electronic energy storage device, said compensating circuit connecting said electronic coil to said inverter, and said compensating circuit being configured to set a frequency of the alternating voltage by way of the said settable passive electronic energy storage device.

2. The charging station according to claim 1, wherein said passive electronic energy storage device is configured in multiple parts and at least one part of said multiple parts of said passive electronic energy storage device is activatable by way of an associated switching element.

3. The charging station according to claim 1, wherein said compensating circuit comprises an electronic network having a plurality of passive electronic energy storage devices.

4. The charging station according to claim 1, wherein said passive electronic energy storage device is a capacitor or a capacitor arrangement.

5. The charging station according to claim 2, wherein said switching element is a semiconductor switching element or a switching unit comprising a plurality of semiconductor switching elements.

6. A method of operating a charging station for an electrically powered vehicle, wherein the charging station draws electrical energy via an inverter from an electrical energy source connected to the charging station, the method comprising:

generating, with an inverter and an electronic coil connected to the inverter, an alternating voltage in resonant operation, to thereby provide with the electronic coil an alternating magnetic field for wireless energy-transfer coupling of the electrically powered vehicle;

operating the electronic coil by way of a compensating circuit with a settable passive electronic energy storage device at the inverter for setting a frequency of the alternating voltage by way of the compensating circuit.

7. The method according to claim 6, which comprises closed-loop controlling a frequency of the alternating voltage by way of the compensating circuit in relation to a frequency reference value.

8. A non-transitory computer program product, comprising a program for a computer unit of a charging station, wherein the program contains program code segments of a program for carrying out the method according to claim 6 when the program is carried out by the computer unit.

9. The computer program product according to claim 8, wherein the computer program product comprises a computer-readable medium on which the program code segments are stored in non-transitory form.

10. The computer program product according to claim 8, wherein the program is loadable directly into an internal memory of the computer unit.