METHOD AND ARRANGEMENT OF ELECTRICAL CONDUCTORS FOR CHARGING A VEHICLE BATTERY

• US 20130099731A1
• Filed: 03/24/2011
• Published: 04/25/2013
• Est. Priority Date: 03/26/2010
• Status: Abandoned Application

• Current Assignee: Li-Tec Battery GmbH (Mercedes-Benz Group AG)
• Original Assignee: Li-Tec Battery GmbH (Mercedes-Benz Group AG)
• Inventors: Schaefer, Tim
• Application Number:
  US13/637,450
• Publication Number:
  US 20130099731A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: H02H 3/16 responsive to fault current to earth, frame or mass with balanced or differential arrangement H02H3/26 ; monitoring earth connection H02H5/105
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0029 with safety or protection devices or circuits
• 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

Abstract

An arrangement (1) of electrical conductors (2, 2′, . . . ) for inducing an alternating current (3) which flows through this conductor arrangement (1), by means of a magnetic alternating field (4) which acts on this conductor arrangement, is used to charge a battery (5) of a vehicle (6) using the alternating current (3) which flows through the conductor arrangement (1). This conductor arrangement (1) is not connected to electrical conductors (8, 8′, . . . ) outside this conductor arrangement (1) via a low-impedance

Claims

1-12. -12. (canceled)

13. An arrangement of electrical conductors, comprising:

a first electrical conductor; and

a second electrical conductor, a magnetic alternating field acting on the first and second electrical conductors inducing an alternating current that flows through the arrangement of electrical conductors for charging a vehicle battery, and the first and second electrical conductors being connected to electrical conductors outside of the arrangement via a low-impedance connection.

14. The arrangement of electrical conductors as set forth in claim 13, further comprising:

a high-impedance connection; and

a neutral point connected to the electrical conductors outside of the arrangement via the high-impedance connection.

15. The arrangement of electrical conductors as set forth in claim 14, wherein:

the high-impedance connection is connected to a ground.

16. The arrangement of electrical conductors as set forth in claim 13, further including:

a detection device electrically connected between the first and second electrical conductors and the electrical conductors outside of the arrangement;

wherein the detection device detects a low-impedance connection between the first and second electrical conductors and the electrical conductors outside of the arrangement.

17. The arrangement of electrical conductors as set forth in claim 16, further including:

a deactivating device transmitting a signal based on the detection device detecting the low-impedance connection; and

a switching device deactivating the magnetic alternating field after receiving the signal from the deactivation device.

18. A vehicle, comprising:

a conductor arrangement including;

a first electrical conductor; and

a second electrical conductor, a magnetic alternating field acting on the first and second electrical conductors inducing an alternating current that flows through the conductor arrangement for charging a vehicle battery, and the first and second electrical conductors not being connected to electrical conductors outside of the conductor arrangement via a low-impedance connection;

a protective conductor connected to a ground; and

an electrically conductive component, outside of the conductor arrangement, connected to the ground via a low-impedance connection to the protective conductor.

19. The vehicle as set forth in claim 18. wherein the protective conductor is configured for a low-impedance connection with an electrically conductive component in a vicinity of the vehicle.

20. The vehicle as set forth in claim 19, wherein the electrically conductive component in the vicinity of the vehicle is the ground

21. The vehicle as set forth in claim 18, further including:

a detection device for detecting a low-impedance connection of the conductor arrangement to an electrical conductor outside of the conductor arrangement.

22. The vehicle as set forth in claim 21, further including:

a deactivating device for deactivating the magnetic alternating field.

23. The vehicle as set forth in claim 22, wherein the deactivating device transmits a signal based on the detection device detecting the low-impedance connection, the vehicle further including:

a switching device deactivating the magnetic alternating field after receiving the signal from the deactivation device.

24. A method of charging a battery of a vehicle, the method comprising:

causing a magnetic alternating field to act on a conductor arrangement of a vehicle for inducing an alternating current in the conductor arrangement; and

continuously monitoring, via a detection device, for an absence of a low-impedance connection between the conductor arrangement and an electrical conductor outside of the conductor arrangement while the battery is charging.

25. The method of charging a battery of a vehicle as set forth in claim 24, further including:

connecting a neutral point of the conductor arrangement to the electrical conductor outside of the conductor arrangement via a high-impedance connection.

26. The method of charging a battery of a vehicle as set forth in claim 24, further including:

interconnecting a protective conductor between the electrically conductive component of the vehicle outside of the conductor arrangement, which is connected to the protective conductor using a low-impedance connection, and both an electrically conductive component in a vicinity of the vehicle and a ground, both of which are connected to the protective conductor using respective low-impedance connections.

27. The method of charging a battery of a vehicle as set forth in claim 24, further including:

detecting a low-impedance connection between the conductor arrangement and the electrical conductor outside of the conductor arrangement while the battery is charging; and

deactivating the magnetic alternating field after the low-impedance connection is detected, while the battery is charging, between the conductor arrangement and the electrical conductor outside of the conductor arrangement.