Device for establishing and disconnecting a charging connection for a plug-in vehicle in an automated manner

• US 9,533,587 B2
• Filed: 02/28/2014
• Issued: 01/03/2017
• Est. Priority Date: 09/02/2011
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Krammer, Josef
• Primary Examiner(s): GRANT, ROBERT J
• Application Number:
  US14/194,218
• Publication Number:
  US 20140176070A1
• Time in Patent Office: 1,040 Days
• Field of Search: 320/109
• US Class Current: 1/1
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/18 Cables specially adapted for charging electric vehicles
• 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 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: H01R 13/6315 allowing relative movement between coupling parts, e.g. floating connection for coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures, H01R12/91 takes precedence
• CPC Class Codes: H01R 2201/26 for vehicles
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• 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

Charging device for the automatic establishment and disconnection of a charging connection for a plug-in vehicle, whereby the charging device of the plug-in vehicle includes a charging electrical unit, a charging station with a charging cable to charge an energy storage unit of the vehicle through a cable-based charging connection. The charging electrical unit comprises a socket and the charging cable a plug. The charging device is designed such that that the socket has one or more insertion funnels, the plug has one or more guide pins, wherein each guide pin is allocated to a specific funnel. Information is exchangeable between the charging station and the charging electrical unit once the charging connection is established. Information between the charging station and the vehicle is exchangeable if the charging connection is not established. The plug and a reinforced section on the charging cable connected to the plug are movable via a guide mechanism in a predefined spatial direction in the form of a coupling movement over maximum predefined coupling length. The plug and reinforced section are also movable opposite the predefined spatial direction in a decoupling movement over the coupling length.

Claims

1. A charging device for use with a plug-in vehicle having an energy storage device, comprising:

a charging electrical unit of the plug-in vehicle, the charging electrical unit having a socket with one or more insertion funnels;

a charging station having a charging cable and a guiding mechanism wherein

the charging cable has a plug configured to mate with the socket to form a cable-based charging connection, the plug having one or more insertion pins and the charging cable having a reinforcement section defined such that the charging cable does not bend within the reinforcement section due to gravitational force affecting the plug and charging cable,

each insertion pin of the plug is assigned to a specific insertion funnel,

information is exchangeable between the charging station and the charging electrical unit when the cable-based charging connection is established,

information is exchangeable between the charging station and the vehicle when the cable-based charging connection is not established,

the plug and the reinforcement section of the charging cable are moveable via the guiding mechanism of the charging station in a specified spatial direction by way of a coupling movement over a maximum specified coupling length, and

the plug and the reinforcement section of the charging cable are moveable via the guiding mechanism of the charging station in a spatial direction opposite the specified spatial direction in a decoupling movement over the coupling length.

2. The charging device according to claim 1, wherein

the guiding mechanism is configured as a guiding arm operable via an electric motor, and

the guiding arm guides the plug with the reinforcement section of the charging cable.

3. The charging device according to claim 1, wherein

the guiding mechanism is configured as a cable reel, operable via an electric motor, and

the plug is guidable with the reinforcement section of the charging cable tangentially to the cable reel when the cable reel rotates.

4. The charging device according to claim 1, wherein

in order to establish the cable-based charging connection, information is exchanged between the vehicle and the charging station that includes an information item about a position of the vehicle,

the vehicle can occupy a charging position in a charging position area that is specified in relation to the charging station and, in order to establish the cable-based charging connection, the vehicle occupies the charging position,

entry of the vehicle into the charging position area and occupation of the charging position by the vehicle are indicated to a driver of the vehicle, and

the occupation of the charging position initializes the coupling movement.

5. The charging device according to claim 4, wherein

when the charging position is occupied, a spatial distance between the plug and the socket drops below the coupling length,

the charging position area is determined by an opening area of the insertion funnel or, in a case of a plurality of insertion funnels, by an opening area of a respective insertion funnel having a smallest opening area, and

when the charging position is occupied and the coupling movement executed, each insertion pin penetrates the opening area of an associated insertion funnel and enters into the associated insertion funnel.

6. The charging device according to claim 5, wherein

the reinforcement section of the charging cable is a mechanically stiffened portion of the charging cable, and

the mechanical stiffening is dimensioned such that when a force exceeding the gravitational force is applied, the charging cable is flexible in the reinforcement section.

7. The charging device according to claim 5, wherein

the reinforcement section is stiffened to form a mechanically rigid charging rod,

the socket is rigidly connected to each insertion funnel, and

the socket is mounted so as to be deflectable in two spatial directions, which are oriented complementary to the spatial direction describing movement of the plug, wherein said plug movement is caused by the guiding mechanism of the charging station.

8. The charging device according to claim 6, wherein

the socket has only one insertion funnel,

the socket is rotationally symmetrical,

the socket is located at a neck of the one insertion funnel,

the plug has only one insertion pin,

the plug is rotationally symmetrical,

the plug has a conical, latch-like part as a plug latch, and

the plug latch is the insertion pin.

9. The charging device according to claim 7, wherein

the socket has only one insertion funnel,

the socket is rotationally symmetrical,

the socket is located at a neck of the one insertion funnel,

the plug has only one insertion pin,

the plug is rotationally symmetrical,

the plug has a conical, latch-like part as a plug latch, and

the plug latch is the insertion pin.

10. The charging device according to claim 6, wherein

the socket has a plurality of insertion funnels,

in order to establish the cable-charging connection in an event of an occupied charging position due to the coupling movement, each insertion pin enters into an associated insertion funnel,

on executing the coupling movement, each insertion funnel guides the entering insertion pin in a guiding movement which comprises spatial directions complementary to the spatial of the coupling movement, and bends the charging cable in an area of the reinforcement section of the charging cable,

the coupling movement and the guiding movement move the plug into the socket and make a plug and socket connection, and

when the plug and socket connection is made, the coupling movement terminates.

11. The charging device according to claim 7, wherein

the socket has a plurality of insertion funnels,

in order to establish the cable-charging connection in an event of an occupied charging position due to the coupling movement, each insertion pin enters into an associated insertion funnel,

on executing the coupling movement, each insertion funnel guides the entering insertion pin in a guiding movement which comprises spatial directions complementary to the spatial of the coupling movement, and bends the charging cable in an area of the reinforcement section of the charging cable,

the coupling movement and the guiding movement move the plug into the socket and make a plug and socket connection, and

when the plug and socket connection is made, the coupling movement terminates.

12. The charging device according to claim 8, wherein

in order to establish the cable-charging connection in an event of an occupied charging position due to the coupling movement, the plug latch enters into the insertion funnel,

on executing the coupling movement, the insertion funnel guides the entering plug latch in a guiding movement which comprises spatial directions complementary to the spatial direction of the coupling movement, and bends the charging cable in an area of the reinforcement section,

the coupling movement and the guiding movement move the plug into the socket and make a plug and socket connection, and

when the plug and socket connection is made, the coupling movement terminates.

13. The charging device according to claim 9, wherein

in order to establish the cable-charging connection in an event of an occupied charging position due to the coupling movement, the plug latch enters into the insertion funnel,

on executing the coupling movement, the insertion funnel guides the entering plug latch in a guiding movement which comprises spatial directions complementary to the spatial direction of the coupling movement, and bends the charging cable in an area of the reinforcement section,

the coupling movement and the guiding movement move the plug into the socket and make a plug and socket connection, and

when the plug and socket connection is made, the coupling movement terminates.

14. The charging device according to claim 10, wherein

the charging connection is established when the plug and socket connection has been made,

the energy storage device is chargeable when the charging connection has been established,

information that is exchanged between the charging station and the vehicle when the charging connection has been established comprises data about an electrical state of the energy storage device,

the decoupling movement is initializable when the charging connection has been established and/or when the energy storage device is fully charged, and

the plug and socket connection can be broken upon executing the decoupling movement.

15. The charging device according to claim 11, wherein

the charging connection is established when the plug and socket connection has been made,

the energy storage device is chargeable when the charging connection has been established,

information that is exchanged between the charging station and the vehicle when the charging connection has been established comprises data about an electrical state of the energy storage device,

the decoupling movement is initializable when the charging connection has been established and/or when the energy storage device is fully charged, and

the plug and socket connection can be broken upon executing the decoupling movement.

16. The charging device according to claim 12, wherein

the charging connection is established when the plug and socket connection has been made,

the energy storage device is chargeable when the charging connection has been established,

information that is exchanged between the charging station and the vehicle when the charging connection has been established comprises data about an electrical state of the energy storage device,

the decoupling movement is initializable when the charging connection has been established and/or when the energy storage device is fully charged, and

the plug and socket connection can be broken upon executing the decoupling movement.

17. The charging device according to claim 13, wherein

the charging connection is established when the plug and socket connection has been made,

the energy storage device is chargeable when the charging connection has been established,

information that is exchanged between the charging station and the vehicle when the charging connection has been established comprises data about an electrical state of the energy storage device,

the decoupling movement is initializable when the charging connection has been established and/or when the energy storage device is fully charged, and

the plug and socket connection can be broken upon executing the decoupling movement.

18. The charging device according to claim 1, wherein each insertion funnel has a cover flap, the cover flap being openable in order to establish the charging connection and being closable when the charging connection has not been established.