Heated connection for charging electric vehicles

• US 9,511,673 B2
• Filed: 03/18/2013
• Issued: 12/06/2016
• Est. Priority Date: 05/14/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Rill, Viktor, Kilb, Jochen
• Primary Examiner(s): Levin, Naum B
• Application Number:
  US14/400,395
• Publication Number:
  US 20150115889A1
• Time in Patent Office: 1,359 Days
• US Class Current: 1/1
• CPC Class Codes: B60L 1/02 to electric heating circuits
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/12 by confirmation, e.g. of the input
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• 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 53/31 Charging columns specially adapted for electric vehicles
• CPC Class Codes: H01R 13/6608 with built-in single component H01R13/68, H01R13/70 take precedence
• CPC Class Codes: H01R 13/701 the switch being actuated by an accessory, e.g. cover, locking member
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• 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

Electrical connection arrangement (32) for a charging system (10), especially for charging a vehicle battery (14) of a motor vehicle (12), comprising a first connecting element (28) that can be connected to a charging station (20) and that can establish electrical charging contact with the second connecting element (30) which is supported on a mobile platform (12). At least one heating element (40) is integrated into the first connecting element and/or into the second connecting element.

Claims

1. An electrical connection arrangement (32) for a charging system (10), having a first connection element (28) configured to be connected to a charging station (20) and which is configured to come into electrical charging contact with a second connection element (30) which is mounted on a mobile platform (12),

characterized in that

at least one heating element (40) is integrated into a branch (42) which is connected in parallel to two electrical contact sections of at least one of the first connection element (28) and the second connection element (30), wherein a frequency filter (50) is integrated into the branch (42) between the two electrical contact sections and is tuned to a specific heating frequency corresponding to a frequency of an alternating heating current superimposed on a charging current in a charging cable (26).

2. The electrical connection arrangement as claimed in claim 1, characterized in that the heating element is an electrical heating element (40).

3. The electrical connection arrangement as claimed in claim 2, characterized in that the electrical heating element (40) is configured to be electrically connected to the charging station (20).

4. The electrical connection arrangement as claimed in claim 2, characterized in that the electrical heating element (40) is configured to be electrically connected to a heating contact arrangement which is configured to be electrically connected to a corresponding heating contact arrangement of the second connection element (28) in such a way that energy is supplied to the heating element (40) by an energy store of the mobile platform (12).

5. The electrical connection arrangement as claimed in claim 2, characterized in that the electrical heating element (40) is configured to be electrically connected to the charging station (20) by the charging cable (26).

6. The electrical connection arrangement as claimed in claim 1, characterized in that the heating element is integrated into the first connection element.

7. The electrical connection arrangement as claimed in claim 1, characterized in that the heating element is integrated into the second connection element.

8. A method for heating an electrical connection element (28, 30) of a charging system (10) for electrically charging a battery (14) of a mobile platform (12) using an electrical connection arrangement (32) as claimed in claim 1, comprising the step of activating a heating element (40) which is integrated into the connection element (28, 30).

9. The electrical connection arrangement as claimed in claim 1, wherein the frequency filter (50) includes a capacitor (52) and a coil (54) connected in series.

10. The electrical connection arrangement as claimed in claim 1, wherein the frequency filter (50) includes a capacitor (52) in the branch (42) configured to prevent a charging current from flowing in the branch (42) when charging with a DC current.

11. A charging system (10) for a mobile platform (12), having a charging cable (26) which is connected to a charging station (20) at one end and which has an electrical first connection element (28) at an other end, said electrical first connection element being configured to be connected to a corresponding second connection element (30) of the mobile platform (12), wherein at least one heating element (40) is integrated into a branch (42) which is connected in parallel to two electrical contact sections of at least one of the first connection element (28) and the second connection element (30), wherein a frequency filter (50) is integrated into the branch (42) between the two electrical contact sections and is tuned to a specific heating frequency corresponding to a frequency of an alternating heating current superimposed on a charging current in the charging cable (26).

12. The charging system as claimed in claim 11, wherein the frequency filter (50) includes a capacitor (52) and a coil (54) connected in series.

13. The charging system as claimed in claim 11, wherein the frequency filter (50) includes a capacitor (52) in the branch (42) configured to prevent a charging current from flowing in the branch (42) when charging with a DC current.

14. A method for heating an electrical connection element (28, 30) of a charging system (10) for electrically charging a battery (14) of a mobile platform (12), comprising the step of activating a heating element (40) which is integrated into a branch (42) which is connected in parallel to two electrical contact sections of at least one of the first connection element (28) and the second connection element (30), wherein a frequency filter (50) is integrated into the branch (42) between the two electrical contact sections and is tuned to a specific heating frequency corresponding to a frequency of an alternating heating current superimposed on a charging current in a charging cable (26).