WO2013174608A2

WO2013174608A2 - System for supplying energy to electric vehicles which do not travel on rails

Info

Publication number: WO2013174608A2
Application number: PCT/EP2013/058580
Authority: WO
Inventors: Roland Edel; Klaus Dietrich; Michael Lehmann; Frank Gerstenberg; Göran KEIL
Original assignee: Siemens Aktiengesellschaft
Priority date: 2012-05-25
Filing date: 2013-04-25
Publication date: 2013-11-28
Also published as: WO2013174608A3; DE112013001246A5; DE102012214753A1

Abstract

The invention relates to a system for supplying energy to an electric vehicle (7) which does not travel on rails, having an electric traction drive during travel on a road (1) comprising at least one lane (2). Running alongside the lane (2) is a contact line of a contact line system for supplying traction. The electric vehicle (7) comprises a laterally extendible current collector (14) which can be brought into sliding contact with the contact line for the purpose of supplying energy during travel. The invention thus provides a system for supplying energy to electric vehicles, particularly passenger vehicles, which is also suitable for long-distance journeys.

Description

description

System for the power supply of non-rail electric vehicles

The invention relates to a system for supplying power to a non-rail-bound electric vehicle with an electric traction drive, in particular a passenger vehicle, while driving on a lane which has at least one lane.

The discontinuous energy supply of an electric vehicle by charging vehicle-side energy storage at a charging station or by replacing a discharged against a charged energy storage at a

Changing station. The ratio of mass to storage capacity of these energy storage is relatively unfavorable, whereby the range of such vehicles is strongly limited with a storage charge. At the loss of time by the required break at a loading or changing station comes the relatively high charging or changing time, which means that such an electric vehicle is unsuitable for long distances and a conventional driven vehicles can not replace.

For long-distance driving on highways is a continuous power supply of a heavy commercial vehicle over about 5 m height attached catenaries overhead line - such as the German patent application of the applicant with the file numbers 10 2011 076 620.0-32, 10 2011 076 623.5- 23 and 10 2011 076 615.4 -32 - known, wherein electrical energy is fed via a standing in sliding contact with the catenary pantograph in the non-rail vehicle. The pantograph is heavy and space consuming even for a commercial vehicle. For easy Per ^¬ sonen vehicle he would be even greater and trained harder and are thereby supported by ei ^¬ nem much lighter vehicle because of its lower height. The invention is therefore based on the object, also suitable for long-distance trips energy supply system of electric vehicles, especially passenger vehicles to provide.

The object is achieved by a system for supplying power to a non-rail electric vehicle with ei ^¬ nem electric traction drive while driving on a lane having at least one lane, where seit- leh next to the lane running a catenary of a catenary system for traction supply is arranged, and wherein the Electric vehicle has a laterally extendable pantograph, which can be brought into sliding contact with the catenary for energy supply while driving. In the case of a multi-lane roadway, the overhead line may be arranged to the right of a right-hand lane or to the left of a left-hand lane, in which case a road traffic system with right-hand traffic is assumed here. The vehicle-mounted pantograph can be extended laterally from the electric vehicle to grind the catenary from below or directly to the side, the sliding contact between pantograph and catenary can be non-positive or positive manner. This is an energy supply of electric vehicles both for direct injection into the traction drive while driving and for re ^¬ charging of energy storage, such as lithium-ion batteries that have been discharged by previous trips on non-electrified lanes and therefore need to be recharged , possible. For example, electric vehicles can also travel long distances without interruption.

In an advantageous embodiment of the energy supply system according to the invention, the electric vehicle has a distance assistance system for automatically maintaining a predefinable distance between the electric vehicle and the overhead line. For the planned energy supply, the driver controls his electric vehicle, for example, on the left lane and Starts a distance assistance system for automatic side clearance or tracking to ensure a sufficiently constant distance to the overhead line. , The distance can be measured continu ously ^¬ and used as a control signal for a to be carried out by a steering assistance system automatic steering intervention by means of a distance sensor for precise distance control between the vehicle and track. It can be used several different signal sources. For example, in the case of known electronic position data of the overhead contact line by means of a global navigation satellite system (English: Global Navigation Satellite System, GNSS) of the first and second generation, such as the GPS, GLONASS or GALILEO system, the vehicle position and from this the distance to the catenary can be determined. The vehicle position can also be done via a measurement of the driving speed in combination with an inertial determination of the direction of travel by steering and Radimpulssensoren. Deviations from the lane deliberately made by a driver, for example during avoidance or overtaking maneuvers, have priority over the automatic ones

Steering interventions for distance or tracking. Thus, the driver retains full control of the steering, so that in a dangerous situation, a quick separation between pantograph and catenary can be done.

In an advantageous embodiment of the power supply system according to the invention, the current collector has a steu ^¬ newable adjusting device for the lateral outward movement. The adjusting device has a control unit, which is supplied as an input signal, the above-mentioned actual distance between the vehicle and the catenary. The control unit determines from the actual distance and the actual position of the current collector ^¬ and from the actual steering angle to be set the desired position of the current collector, by an actuator of the actuating device in an extending or retracting movement of the

Pantograph is automatically implemented. The signal determined by the distance assistance system can also be used as an input signal. table steering angle can be used so that readjustment of the pantograph can be easier or even obsolete.

In a preferred embodiment of the energy supply system according to the invention, the electric vehicle and an operator center of the catenary installation have communication means for bidirectional wireless data transmission, via which utilization data required for an energy supply can be exchanged. The communication means comprise a driving zeug- and a central unit with user interfaces, and transmitting and receiving means which are adapted tech ^¬ African and commercial usage data, such as identification data for the detection of an energy entitlement or subscription data on the fed amount of energy for billing purposes exchange.

In a preferred embodiment of the energy supply system according to the invention, the contact line between a roadway and an oncoming lane is arranged. The electric vehicles can feed energy from the left lane of their lane. The catenary runs, for example, along the central strip between the Fahrbah ^¬ NEN, which is not accessible to pedestrians or only in an unauthorized manner. Thus, there is a certain protection against contact of the live catenary by their arrangement between the lanes.

In a further advantageous embodiment of the energy supply system according to the invention, the catenary is formed multipolar, wherein a pole of the catenary is formed by a contact wire or a busbar. Since in a power supply system according to the invention, the rails used in rail-bound vehicles as return conductors are not present, the catenary is multi-pole. With two-pole DC or Wechselstromsyste ^¬ men as a first pole and a second pole of the reciprocating return conductor is used. In three-pole three-phase systems, the catenary has three poles, if necessary, a grounded pole provided as neutral or ground contact. The poles of the catenary can be formed by separate contact wires, which are notched longitudinally to the suspension. The pantograph can wear in this case abrasive strips or pieces over which the sliding contact to the contact wires can be produced. The pantograph may have a V-shaped Andrahthilfe on ^¬ , which simplifies contact making. Alternatively, the poles may also be formed by separate or in assembly out ^¬ executed rigid busbars, the surface of which are ground in a contact area of the current collector. The contact strips can be made of carbon or copper, optionally with a stainless steel tread. The busbar can be formed by an aluminum profile and the contact wires are made of copper.

In a further preferred embodiment of the energy supply system according to the invention the poles of the Fahrlei ^¬ device are formed by busbars, which are integrated in a vehicle restraint system of the road, in particular in a side guardrail. As a passive Fahrzeugrückhal ^¬ tesystem come next side or middle guard rails, other steel or concrete components into consideration. The structural unit of the busbars with such a restraint system provides the overhead contact line with structural support through an already existing infrastructure as a carrier system. In addition, this common mechanical design with grinding areas and insulators allows a compact design of the current collector. Preferably, in the power supply system according to the invention, the bus bar of an ungrounded pole at a greater lateral distance from the roadway is arranged as the busbar of a grounded pole. By placing an ungrounded pole deeper in a protective barrier than the grounded pole (s), on the one hand, a touch of the ungrounded one becomes

Pols from the outside and on the other hand, a short circuit of Poland in a deformation of the protective barrier due to a vehicle ^¬ impact difficult. Further preferably, in the energy supply system according to the invention two ^bus bars are arranged such that their contact areas are inclined relative to one another. A V-shaped arrangement of the contact areas simplifies contact making of the current collector with the busbars.

In another advantageous embodiment of the energy supply system according to the invention, the busbars are veneered on the roadway side by contact protection with a travel slot for the current collector. By such a veneer operating reliability of the invention Fahrlei ^¬ plant is increased. The current collector can have a ^¬ from mobile Stromabnehmerarm that can pass through the driving slot of the veneer and overall genüber situated contact pieces are arranged at the end of two, which repel each other elastically to make contact with the busbars. As a result, a self-regulation of the contact forces is achieved. In another preferred embodiment of the energy supply system according to the invention, a bus bar ei ^¬ nen arcuate contact area and the current collector comprises a plurality of resiliently mounted grinding pieces for grinding the contact area. The plurality of contact pieces are electrically connected to each other and can be adapted to the arcuate busbar to form the sliding contact.

In another advantageous embodiment of the inventive energy supply system, the current collector ei ^¬ ne pressing device for keeping constant the contact force between the grinding pieces of the pantograph and the Fahrlei ^¬ tion. The pressing device can be formed by a mechanical spring or by a pneumatic or hydraulic cylinder, which ensure a constant maintenance of the contact force between the current collector and the contact line and thus a high quality of the energy transfer. In another preferred embodiment of the energy supply system according to the invention, the current collector has wear-dependent deliverable contact strips. The

Abrasive pieces are provided with a wear reserve, which is delivered depending on the wear suffered. As a result, the service life between two Abrasive changes can be considerably extended.

Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the drawings, in which

1 shows a power supply system according to the invention with a contact line formed by contact wires, FIG. 2 shows a lane with a middle protective barrier, FIG.

3 shows a first embodiment,

4 shows a second embodiment,

5 shows a third embodiment,

6 shows a fourth embodiment and

7 shows a fifth exemplary embodiment, in each case of an inventive energy supply system with <by

Busbars formed catenary, are illustrated schematically.

According to FIG 1, an invention of electrified Stre ^¬ ckenabschnitt a roadway 1, such as a highway, one or more lanes 2, 3, 4. Subject to operational or legal regulations and interventions, all lanes 2, 3, 4 can be used technically without restrictions by conventionally driven vehicles 5. The roadway 1 and / or their opposite roadway, not shown, can be equipped with the inventive system for supplying power to electrically or electrically driven vehicles, hereinafter referred to as heavy commercial vehicle electric vehicle 6 or designed as a light passenger vehicle electric vehicle 7. One or more lanes - in the illustrated embodiment, only the right lane 4 - can be equipped with an attached to masts 9 and jibs 10, two-pole overhead line 8 for trained as a commercial vehicle electric vehicles 7. The electrical energy is fed from a substation 11 in the contact wires of the overhead line 8.

For energy supply of trained as a passenger vehicle electric vehicles 7 is laterally adjacent to the lane 1 - in the illustrated embodiment, left next to the left lane 2 of the lane 1 - a two-pole catenary arranged with two trained as a return conductor wires 12, in the energy through the substation 11 is fed. If necessary, a three-pole three-phase overhead line system can be arranged. It may also be a separate pole for a neutral or ground contact. The direction of travel 13 runs in the illustrated embodiment from bottom to top. For unidirectional or bidirectional energy transmission, an electric vehicle 7 has a current collector 14 for the positive or non-positive sliding contact with the contact wires 12.

The at least two-pole overhead contact line is preferably integrated in a passive vehicle restraint system, for example in a protective barrier 15 according to FIG. 2 or a concrete element. According to FIG 3, the two- or multi-pole catenary is integrated with each ge ^¬ separated busbars 16 or other grindable lines in the guardrail 15 and is positively or non-positively ground by a two- or multi-pole pantograph 14.

In the embodiment according to FIG. 4, the contact line is designed as a common mechanical structure with a plurality of electrically conductive, contactable regions 17 which are electrically separated from one another by means of insulators 18. The current collector 14 is made more compact for positive or non-positive grinding. According to FIG 5, the busbars 19, 20, 21 are integrated into the protective barrier 15 that the electric vehicle 7 facing pole 19 and the lane 2 facing elektri ^¬ cal pole 21 are grounded and can be safely touched. The other, non-grounded pole 20 - for example, the positive terminal - is located deeper in the safety barrier 15, so that a certain Be ^¬ accidental contact is ensured. As a result, the electric poles 19, 20, 21 of the busbar can not touch even when the overall construction is deformed by, for example, a vehicle collision.

According to FIG. 6, the two-pole busbar is integrated in the protective barrier 15 such that the two electrical poles 22 and 23 are opposite one another. These are optionally blinded by a Berührschutz 24 and thereby protected from the outside. The grounded pole can be up or down. The current collector 14 also has two gegenü ^¬ berliegende contact strips 25, which are urged by a resilient, pneumatic or hydraulic pressing device 26 with a constant contact force at the busbars 22, 23rd The central arrangement of the Stromabnehmerarms 27 acts as a self-regulating system and equalizes the contact ^¬ forces both contact strips 25 at two electrical poles 23, 23rd

According to FIG. 7, the busbars are integrated in the protective barrier 15 in such a way that the two electrical contact regions of the poles 28, 29 are arc-shaped. Each pole of the current collector 14 consists of a plurality of individually resiliently mounted, electrically conductive interconnected grinding pieces 30, 31, which can adapt to the arcuately shaped busbar. As a result, horizontal and vertical movements of pantograph 14 and electric vehicle 7 are compensated and increases the quality of the power consumption. Of the

Current collector arm 32 may have a second mechanical, pneumatic or hydraulic spring system 33 to decouple vehicle and pantograph movements from each other.

Claims

claims

1. System for powering a non-rail ^¬ bound electric vehicle (7) with an electric Traktionsan- drive while driving on at least one lane

(2) having roadway (1), wherein laterally next to the lane (2) extending a catenary of a catenary system for traction supply is arranged, and wherein the electric vehicle (7) has a laterally extendable pantograph (14) which is connected to the catenary to Energy supply while driving in sliding contact can be brought.

2. Energy supply system according to claim 1, wherein the electric vehicle (7) has a distance assistance system for automatically maintaining a predefinable distance between the electric vehicle (7) and the contact line.

3. Energy supply system according to claim 1 or 2, wherein the current collector (14) has a controllable adjusting device for the lateral extension movement.

4. Energy supply system according to one of claims 1 to 3, wherein the electric vehicle (7) and an operator center of the catenary system communication means for bidirectional wireless data transmission, via the for a

Energy input required usage data are interchangeable.

5. Energy supply system according to one of claims 1 to 4, wherein the catenary between a carriageway (1) and a

On the opposite lane is arranged.

6. Energy supply system according to one of claims 1 to 5, wherein the catenary is formed multi-pole, wherein a pole of the catenary by a contact wire (12) or a

Busbar (16, 19, 20, 21, 22, 23, 28, 29) is formed.

7. Energy supply system according to one of claims 1 to 6, wherein the poles of the catenary by busbars (16, 19, 20, 21, 22, 23, 28, 29) are formed in a vehicle ^¬ restraint system of the road, in particular in a lateral guardrail (15), are integrated.

8. Energy supply system according to claim 7, wherein the busbar (20) of an ungrounded pole at a greater seitli ^¬ Chen distance from the roadway (1) is arranged as the busbar (19, 21) of a grounded pole.

9. Energy supply system according to claim 7 or 8, wherein two bus bars are arranged such that their contact ^¬ areas are inclined to each other.

10. Energy supply system according to one of claims 7 to

9, wherein the bus bars (22, 23) on the road side by ei ^¬ nen Berührschutz (24) are blinded with driving slot for the current collector (14).

11. Energy supply system according to one of claims 7 to

10, wherein a bus bar (28, 29) has an arcuate con ^¬ tact region and the current collector (14) comprises a plurality of resiliently mounted grinding pieces (30, 31) for grinding the contact area.

12. Energy supply system according to one of claims 1 to

11, wherein the current collector (14) has a pressing device (26) for keeping the contact force between grinding pieces (25) of the current collector (14) and the contact line (22, 23) constant.

13. Energy supply system according to one of claims 1 to

12, wherein the current collector (14) has wear-dependent deliverable grinding pieces.