CHARGING OF ROAD VEHICLES CAPABLE OF BEING BATTERY DRIVEN

• US 20160200205A1
• Filed: 08/18/2014
• Published: 07/14/2016
• Est. Priority Date: 08/22/2013
• Status: Abandoned Application

• Current Assignee: Siemens Mobility GmbH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: BOLIK, Ulrich, LINNHFER, MARTIN
• Application Number:
  US14/913,270
• Publication Number:
  US 20160200205A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 5/42 for collecting current from individual contact pieces connected to the power supply line
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/32 by charging in short intervals along the itinerary, e.g. during short stops
• CPC Class Codes: B60L 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• 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

According to the invention, a road vehicle (1) capable of being battery driven drives up to a charging station (2). A control device (8) located on the road vehicle (1) brings a contact assembly (11) provided on the road vehicle (1) on an upper face (12) of said vehicle (1) into contact with contact elements (10) of the charging station (2) which are located above the road vehicle (1). The control device (8) of the road vehicle (1) transmits a switching command (S) in a cableless manner to a control device (9) located on the charging station (2). As a result of said switching command (S), the control device (9) of the charging station (2) applies a voltage to the contact elements 10) such that a charging current (I) can be fed from an alternating voltage supply system (13) to an electric energy store (6) of the road vehicle (1) via the contact elements (10) of the charging station (2), the contact assembly (11) of the road vehicle (1) and a charging current converter (14). The charging current converter (14) sets the output voltage (U) provided by said converter (14) and/or the charging current (I) in accordance with set values (U*, I*) that are predetermined for the control device (8) of the road vehicle (1).

Claims

1-25. -25. (canceled)

26. A charging method for a road vehicle capable of being battery driven and having at least one electrical machine and an electric energy store to power the road vehicle in a drive mode via a traction current converter of the road vehicle, said road vehicle comprising:

driving the road vehicle to a charging station having contact elements;

bringing by control of a control device arranged on the road vehicle a contact assembly on an upper face of the road vehicle into contact with the contact elements of the charging station;

transmitting a switching command by the control device in a cableless manner to a control device arranged on the charging station;

applying by the control device of the charging station a voltage to the contact elements in response to the switching command so as to feed a charging current from an alternating voltage supply system to the electric energy store via the contact elements of the charging station, the contact assembly of the road vehicle and a charging current converter;

setting by the charging current converter an output voltage and/or the charging current in accordance with setpoint values predetermined by the control device;

using the traction current converter as the charging current converter in a charging mode of the road vehicle;

using in the charging mode a winding of the electrical machine as an operating inductance of the charging current converter;

wherein the alternating voltage supply system network is a three-phase network with a plurality of phases, with each phase having a separate one of the contact elements.

27. The charging method of claim 26, further comprising supplying the charging station with electrical energy from the mains power network.

28. The charging method of claim 26, further comprising arranging a transformer in the charging station to separate a potential of the contact elements of the charging station from an energy supply of the charging station.

29. A road vehicle capable of being battery driven, said road vehicle comprising:

an electric energy store;

a traction current converter;

at least one electrical machine having a winding and being powered by the electric energy store in a drive mode of the road vehicle via the traction current converter;

a control device configured to transmit a switching command to a control device of the charging station in a cableless manner and to provide predetermined setpoint values;

a contact assembly arranged on an upper face of the road vehicle, said contact assembly being brought into contact by control of the control device with contact elements of a charging station which is arranged above the road vehicle;

wherein in response to the switching command the control device of the charging station applies voltage to the contact elements and feeds a charging current from an alternating voltage supply system to the electric energy store via the contact elements of the charging station, the contact assembly, and a charging current converter,

said charging current converter setting an output voltage and/or the charging current as a function of the predetermined setpoint values,

said contact assembly being electrically connected to the traction current converter, so that the traction current converter operates as the charging current converter in a charging mode of the road vehicle, wherein in the charging mode the winding of the electrical machine is used as operating inductance of the charging current converter;

said alternating voltage supply system configured as a three-phase network with a plurality of phases, with the contact assembly having for each phase of the three-phase network a separate one of the contact elements.