Method and Base Unit for Inductively Charging Electric and Hybrid Vehicles

• US 20170225582A1
• Filed: 04/28/2017
• Published: 08/10/2017
• Est. Priority Date: 10/29/2014
• Status: Abandoned Application

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: VARADI, Peter, AUGST, Alexander
• Application Number:
  US15/581,242
• Publication Number:
  US 20170225582A1
• 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: B60L 53/35 Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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

Abstract

A base unit is provided for a charging station for inductively charging an electrical store of a vehicle. The base unit has a primary coil, which is designed, if there is electromagnetic coupling to a secondary coil of the vehicle, to transmit electrical energy to the secondary coil. The base unit also has an image sensor, which is designed to capture image data of at least a part of the vehicle. In addition, the base unit has a control unit, which is designed to provide or use the image data for positioning the secondary coil in relation to the primary coil.

Claims

1. A base unit for a charging station for inductively charging an energy store of a vehicle, the base unit comprising:

a primary coil, which is designed to transfer electrical energy to a secondary coil of the vehicle when there is an electromagnetic coupling with the secondary coil;

a sensor, which is designed to sense sensor data from at least a part of the vehicle; and

a control unit, which is designed to provide or use the sensor data for a positioning of the secondary coil in relation to the primary coil.

2. The base unit as claimed in claim 1, wherein

the sensor is designed for sensing a machine-readable code.

3. The base unit as claimed in claim 2, wherein the machine-readable code comprises one or more of the following data:

one or more optimized charging curves,

one or more items of frequency information relating to the charging operation,

an item of information that represents the position of the secondary coil within the vehicle underfloor, and/or

one or more geometrical parameters that represent the arrangement of the secondary coil within the vehicle.

4. The base unit as claimed in claim 1, wherein

the sensor is designed to sense image data with respect to an underfloor of the vehicle.

5. The base unit as claimed in claim 1, wherein

the sensor is connected to the primary coil;

and/or

the sensor is moved in a way dependent on the movement of the primary coil.

6. The base unit as claimed in claim 1, wherein

the base unit is designed to evaluate image data of an image series or an image sequence, in order to determine a position of the primary coil in relation to the secondary coil via image processing or object recognition.

7. The base unit as claimed in claim 1, wherein

the sensor is designed for detecting a predetermined part of the vehicle.

8. The base unit as claimed in claim 1, wherein

the sensor is designed for detecting at least two or more parts of the vehicle and for determining the position and/or the angle in relation to at least two or more of the detected parts.

9. The base unit as claimed in claim 1, wherein

the base unit is designed to determine on the basis of image data information with respect to a technical parameter of the vehicle.

10. The base unit as claimed in claim 1, further comprising:

movement devices which are designed to move the primary coil in order to bring about an electromagnetic coupling between the primary coil and the secondary coil.

11. The base unit as claimed in claim 10, wherein

the base unit comprises a frame;

the movement devices comprise one or more rails, which are connected to the frame; and

the movement devices further comprise actuators, which are designed to move the primary coil along the one or more rails.

12. The base unit as claimed in claim 11, wherein

the movement devices further comprise rotation devices, which are designed to rotate the primary coil about a vertical axis of the primary coil.

13. The base unit as claimed in claim 10, wherein

the movement devices comprise one or more wheels and/or rollers, which are designed to move the primary coil.

14. The base unit as claimed in claim 4, wherein

the base unit comprises lighting, which is designed to generate a light pattern and/or one or more light pulses;

and

the sensor is designed to sense a reflection of the light pattern and/or of the one or more light pulses on the underfloor of the vehicle.

15. The base unit as claimed in claim 7, wherein the predetermined part of the vehicle is one of the secondary coil, part of vehicle tires, or part of vehicle axles.

16. The base unit according to claim 9, wherein the technical parameter of the vehicle is with respect to the secondary coil or the energy store of the vehicle.

17. A method for positioning a primary coil of a base unit under a secondary coil of a vehicle, the method comprising the acts of:

determining sensor data by a sensor of the base unit, wherein the sensor data comprise items of information relating to the position of at least a part of the vehicle; and

changing the position of the primary coil and/or of the secondary coil in dependence on the sensor data.

19. A computer program product, comprising a non-transitory computer readbale medium having stored thereon program code that, when executed by a processor, carries out the method of claim 17.

18. A method for positioning a secondary coil of a vehicle in relation to a primary coil of a base unit, wherein the position of the secondary coil of the vehicle is changeable by an activation of an actuator of the vehicle, the method comprising the acts of:

determining positioning signals from sensor data of a sensor that is connected to the base unit;

transmitting the positioning signals to the vehicle; and

activating the actuator of the vehicle in dependence on the transmitted positioning signals in order to bring about an electromagnetic coupling between the primary coil and the secondary coil for inductively charging an energy store of the vehicle.

20. A computer program product, comprising a non-transitory computer readbale medium having stored thereon program code that, when executed by a processor, carries out the method of claim 18.