CHARGING STATION FOR AN ELECTRICALLY POWERED VEHICLE AND CHARGING METHOD

• US 20150091521A1
• Filed: 09/29/2014
• Published: 04/02/2015
• Est. Priority Date: 09/27/2013
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: KOMMA, THOMAS, POEBL, MONIKA, BLUM, MANUEL, MANTEL, MIRJAM
• Application Number:
  US14/499,483
• Publication Number:
  US 20150091521A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• 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 53/126 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: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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: 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

Abstract

A charging station transfers energy to an electrically powered vehicle which is wirelessly power-coupled to the charging station. The station has terminal for an electrical energy source, an inverter and an electronic coil connected to the inverter for providing energy for the wireless energy-transferring coupling by way of an alternating magnetic field. For that purpose the inverter is configured to apply an alternating electric voltage to the electronic coil in a resonance mode. The charging station has a detection unit and a control unit, the detection unit detects a malfunction relating to the transfer of energy during the wireless energy-transferring coupling of the electrically powered vehicle and to provide a fault signal. The control unit terminates the transfer of energy by way of the alternating magnetic field on the basis of the malfunction signal.

Claims

1. A charging station for transferring energy from the charging station to a wirelessly power-coupled electrically powered vehicle, the charging station comprising:

a terminal for an electrical energy source;

an inverter connected to said terminal;

an electronic coil connected to said inverter and configured for providing energy by wireless energy-transfer coupling via an alternating magnetic field, said inverter being configured to apply an alternating electric voltage to said electronic coil in a resonance mode;

a detection unit configured to detect a malfunction relating to the transfer of energy during the wireless energy-transfer coupling of the electrically powered vehicle and to generate a malfunction signal; and

a control unit connected to said detection unit and configured to terminate an energy transfer by way of the alternating magnetic field based on the malfunction signal.

2. A method of transferring energy from a charging station to an electrically powered vehicle that is wirelessly power-coupled to the charging station, the method comprising:

drawing electrical energy from an electrical energy source;

applying an alternating electric voltage by an inverter powered by the electrical energy to an electronic coil in resonance mode;

generating with the coil an alternating magnetic field for transferring the energy from the charging station to the electrically powered vehicle;

monitoring for a malfunction relating to the transfer of energy during the wireless energy-transferring coupling of the electrically powered vehicle, and on detection of a malfunction, terminating a provision of energy by way of the alternating magnetic field.

3. The method according to claim 2, wherein the detection comprises comparing a parameter relating to the energy transfer and/or a change in the parameter with a reference value.

4. The method according to claim 3, wherein the parameter consists of a phase shift between a coil current of the electronic coil and the alternating voltage provided by the inverter for the electronic coil.

5. The method according to claim 3, wherein the parameter consists of a frequency of the alternating voltage.

6. The method according to claim 3, wherein the parameter consists of an input current of the charging station.

7. A computer program product, comprising a non-transitory program for a computer unit of a charging station, wherein the program has program code segments of a program for executing the steps of a method according to claim 6, when the program is executed by the computer unit.

8. The computer program product according to claim 7, wherein the computer program product comprises a computer-readable medium on which the program code segments are stored in non-transitory form.

9. The computer program product according to claim 7, wherein the program is directly loadable into an internal memory of the computer unit.

10. A computer program product, comprising a non-transitory program for a computer unit of a charging station, wherein the program has program code segments of a program for executing the steps of a method according to claim 5, when the program is executed by the computer unit.

11. The computer program product according to claim 10, wherein the computer program product comprises a computer-readable medium on which the program code segments are stored in non-transitory form.

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