EP3999371A1 - Charging station for charging an electrical energy accumulator of a road vehicle - Google Patents

Charging station for charging an electrical energy accumulator of a road vehicle

Info

Publication number
EP3999371A1
EP3999371A1 EP20753881.0A EP20753881A EP3999371A1 EP 3999371 A1 EP3999371 A1 EP 3999371A1 EP 20753881 A EP20753881 A EP 20753881A EP 3999371 A1 EP3999371 A1 EP 3999371A1
Authority
EP
European Patent Office
Prior art keywords
contact
charging
pole
charging station
strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20753881.0A
Other languages
German (de)
French (fr)
Inventor
Florian BÜHS
Helge Molthan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility GmbH
Original Assignee
Siemens Mobility GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Mobility GmbH filed Critical Siemens Mobility GmbH
Publication of EP3999371A1 publication Critical patent/EP3999371A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
    • B60L5/22—Supporting means for the contact bow
    • B60L5/24—Pantographs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/36—Current collectors for power supply lines of electrically-propelled vehicles with means for collecting current simultaneously from more than one conductor, e.g. from more than one phase
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/42—Current collectors for power supply lines of electrically-propelled vehicles for collecting current from individual contact pieces connected to the power supply line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • Charging station for charging an electrical energy storage device in a road vehicle
  • the invention relates to a charging station for charging an electrical energy store of a road vehicle.
  • the invention is therefore based on the object of a charging station for charging an electrical energy storage device of a road vehicle, which is used for feeding energy from a Two-pole catenary system has a pantograph with min least one liftable and lowerable contact strip per contact pole to provide, which enables shorter charging times when the road vehicle is stationary.
  • the object is achieved by a charging station with the features specified in Pa tentans title 1.
  • the charging station comprises at least two charging contacts per contact pole, wel che above a charging position for the road vehicle and the like are arranged next to each other that at least two contact points between contact strip and charging contacts can be produced for each contact pole.
  • the electrical contact between the catenary system and the road vehicle is formed by a large number of contact points through which the charging power is transmitted.
  • the electrical heat generated per contact point decreases with an increasing number of contact points and can dissipate better due to the spatial distribution of the contact points.
  • the dimensioning of the contact strips is predetermined, so that the two or more charging contacts allow a higher charging current, which reduces the charging time.
  • the number of charging contacts can be varied, preferably two, three or four charging contacts being provided.
  • At least some of the charging contacts are designed as contact rails, which are suspended in a charging frame paral lel to each other spring-loaded and aligned transversely to the contact strips of the pantograph of the road vehicle located in the loading position.
  • the loading frame can be carried, for example, by a side arm projecting beyond the loading position, which is attached to a loading mast set up next to the loading position.
  • the elongated contact rails are aligned in the longitudinal direction of the vehicle so that, when viewed from above, they form a right or approximately right angle with the contact strips of the pantograph.
  • the charging station of this embodiment is suitable for charging positions where there is no overhead line system.
  • the road vehicle drives to the charging station in energy storage or hybrid mode and, when reaching the charging position, sets up the pantograph to raise the contact strips to the charging contacts.
  • a charging contact is formed for each contact pole by a contact wire of the overhead line system and the other charging contacts are designed as contact rails that are spring-loaded in a charging frame parallel to the contact wire and are suspended transversely to the contact strips of the pantograph of the road vehicle in the charging position are aligned.
  • the charging station of this embodiment can be assigned to La depositionen on electrified overhead lines.
  • the contact wires each act as a charging contact
  • the other charging contacts are formed by contact rails analogous to the embodiment described above.
  • the contact rails are held slightly above the contact wires, so that the contact strips when the pantograph is set up only lifts the contact wires a little in order to then make contact with the contact rails.
  • the charging frame of the charging station has Grenzmit tel for the lifting movement of the sliding strips, which define a contact position of the sliding strips in which the spring-loaded charging contacts counteract with the same spring force press the sanding bar.
  • the limiting means form a mechanical stop for the contact strips. If this is enough, the spring elements are deflected approximately evenly, which ensures an even distribution of the pressure forces at the contact points between sliding strips and charging contacts.
  • a length of the contact rails is at least as great as a distance between two sliding strips of a contact pole arranged one behind the other in the longitudinal direction of the vehicle.
  • the length of the contact rails is at least twice as great as the distance between two sliding strips of a contact pole arranged one behind the other in the longitudinal direction of the vehicle.
  • the longer design of the contact rails makes it possible to offer the driver a certain Tole ranz Scheme in the direction of travel when parking his road vehicle on the loading position, which increases the user friendliness of the charging station according to the invention.
  • the length of the contact rails is at least as great as a vehicle length of the road vehicle.
  • a further lengthening of the contact rails enables the charging contacts to be contacted by the sliding strips when the charging position is approached and thus a start of charging before the vehicle comes to a standstill. This shortens in turn, the period of time for the charging process of the energy storage device.
  • the charging contacts for each contact pole are spaced from one another in such a way that the contact points of the charging contacts are in lateral end sections of the sliding strip.
  • the contact strips can have different material sections. Their central area, which is heavily used on the overhead line system, can be made of graphite, while the side end sections can be made of copper or aluminum. As a result, the wear of the contact wires can be kept low. On the other hand, higher charging currents can be carried over the lateral end sections, since the contact points between contact strips and charging contacts are in the end sections of the contact strips.
  • the charging frame is designed to be movable downward against a lifting force of the current collector when the contact strips are in contact. If the charging frame can be moved downwards, the contact force between sliding strips and charging contacts can be increased since, in addition to the restoring forces of the spring elements, a counteracting force against the erecting forces of a lifting device of the pantograph. The higher pressure forces improve the power transmission.
  • the charging station comprises a sensor unit for detecting a temperature of the contact strip and a control unit for temperature-dependent regulation of a charging current.
  • the charging current can be regulated in such a way that overheating of the contact strip and the resulting damage are avoided.
  • the charging current can be regulated from the charging station or from the vehicle via suitable communication between the charging station and the vehicle.
  • FIG. 1 shows a front view of a road vehicle positioned in a charging station
  • FIG. 2 shows a front view of contact strips and charging contacts of a contact pole from FIG. 1,
  • FIG. 3 shows a side view of contact strips and charging contacts of the contact pole from FIG. 2 in a longitudinal section along the section line III-III,
  • FIG. 4 shows a front view of contact strips and charging contacts of the contact pole from FIG. 1 in the closed state
  • Charging contacts of a contact pole from FIG. 4 are illustrated schematically.
  • an electrically or hybrid-electrically powered road vehicle for example a heavy utility vehicle, is positioned for charging its electrical energy storage device 2 in a charging station 4 installed on a roadway 3.
  • the road vehicle 1 is equipped with a current collector 5 for feeding energy while driving from a two-pole overhead line system, of which, for the sake of simplicity, only the contact wires 6, which are designed as forward and return conductors, are shown above a lane of the roadway 3 adjacent to the loading position.
  • the current collector 5 has a pantograph-like frame 7, which is supported on the vehicle roof and can be set up and folded up by means of a lifting device (not shown).
  • the Ge alternate 7 carries two seen in the longitudinal direction of the vehicle next to each other arranged rockers 8 - one for each contact pole 9 - which are each equipped with a pair of sliding strips 10 arranged one behind the other in the longitudinal direction of the vehicle. If the road vehicle 1 uses an electrified lane, the contact strips 10 can by setting up the Frame 7 can be brought into sliding contact with the respective contact wire 6 in order to feed energy from the overhead line system into the road vehicle 1.
  • the charging station 4 is arranged away from an electrified lane and comprises two or more, for example four, charging contacts 11 for each contact pole 9, which are arranged above the charging position for the road vehicle 1.
  • the La detitlee 11 can be connected to a side arm 12 of the charging station 4, which protrudes from a side of the roadway 3 placed loading mast 13 over the loading position.
  • the charging voltage is provided to the La detitleen 11 of the respective contact poles 9 via electrical lines, not shown and running in the loading mast 13 and the side arm 12.
  • each charging contact 11 formed as contact rails is spring-mounted in a charging frame 14 for each contact pole 9.
  • the elongated contact rails are aligned parallel to one another and are each connected to the loading frame 14 via, for example, two spring elements 15.
  • the length L of the contact rails is here significantly greater than the Ab was D between the one behind the other contact strips 10 of a rocker 8 selected so that a tolerance range for the positioning of the road vehicle 1 is available in the direction of travel.
  • the limiting means 16 can be formed, for example, by side legs of the U-shaped loading frame 14. For each contact pole 9, electrical contact is made via eight contact points, through which a high charging current can flow to shorten the charging time of the energy store 2. In this state, the deflected spring elements 15 ensure an evenly distributed contact over the contact points. pressure force between contact strips 10 and charging contacts 11. To increase the pressure force, the charging frame 14 can be attached to the side holder 12 so that it can be lowered, the charging contacts 11 pressing downward against the lifting force of the current collector 5.
  • a high charging power can be transmitted because the current heat generated per contact point decreases with an increasing number of contact points and can dissipate better due to the spatial spacing of the contact points.
  • the charging contacts 11 shown are distributed approximately evenly here along the sliding strip 11.
  • the charging contacts 11 can be arranged in such a way that they only contact a lateral end region of the contact strip 10 when the contact is made, which then - in contrast to the central region formed from graphite - is made of metal, in particular aluminum or copper. This allows the charging currents to be increased further.
  • the charging station 1 can further include, which is not shown here, a sensor unit for detecting a temperature of the contact strip 10 and a control unit for temperature-dependent regulation of a charging current. In this way, the charging current can be regulated in such a way that overheating of the contact strips 10 and damage caused thereby are avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to a charging station (4) for charging an electrical energy accumulator (2) of a road vehicle (1). For energy supply from a two-pole overhead line system, the road vehicle (1) has a pantograph (5) with at least one wearing strip (10), which can be raised and lowered, for each contact pole (9). For each contact pole (9), the charging station (4) comprises at least two charging contacts (11) which are arranged above a charging position for the road vehicle (1) and are arranged next to each other so that for each contact pole (9) at least two contact points can be established between the wearing strip (10) and the charging contacts (11). This makes it possible to transmit higher charging currents, which shortens the charging time for the energy accumulator (2).

Description

Beschreibung description
Ladestation zum Aufladen eines elektrischen Energiespeichers eines Straßenfahrzeugs Charging station for charging an electrical energy storage device in a road vehicle
Die Erfindung bezieht sich auf eine Ladestation zum Aufladen eines elektrischen Energiespeichers eines Straßenfahrzeugs. The invention relates to a charging station for charging an electrical energy store of a road vehicle.
Bei Ladestationen für elektrisch angetriebene Straßenfahrzeu ge mit Energiespeichern ist es bekannt, die Ladeleistung ka belgebunden über eine Steckverbindung insbesondere zu leich ten Personenkraftwagen zu übertragen. At charging stations for electrically powered Straßenfahrzeu ge with energy storage devices, it is known to transfer the charging power via a cable connection, in particular to light passenger cars.
Bei elektrisch oder hybridelektrisch angetriebenen Straßen fahrzeugen, insbesondere schweren Nutzfahrzeugen, ist es zum Beispiel aus der Offenlegungsschrift DE 102017 203 046 Al auch bekannt, den Energiespeicher während der Fahrt über eine Energieeinspeisung aus einer zweipoligen Oberleitungsanlage mittels eines fahrzeugseitigen Stromabnehmers aufzuladen. Der Stromabnehmer umfasst ein pantographenartiges Gestell, wel ches je Kontaktpol eine Wippe mit zwei Schleifleisten trägt. Während der Fahrt stehen die Schleifleisten jedes Kontaktpols mit den dem jeweiligen Kontaktpol zugeordneten Fahrdrähten in Schleifkontakt, so dass elektrische Energie sowohl direkt für den Traktionsantrieb als auch zum Aufladen des Energiespei chers einspeisbar ist. Im Gegensatz zum Fährbetrieb fehlt es im Stillstand des Fahrzeugs sowohl an einer Bewegung der punktförmigen Kontaktstelle zwischen Schleifleiste und Fahr draht als auch an kühlendem Fahrtwind, so dass im Stillstand die Speisestromstärke so gering gewählt werden muss, dass es zu keinen überhitzungsbedingten Beschädigungen an Schleif leiste und/oder Fahrdraht kommt. Ein Aufladen des Energie speichers im Stillstand des Fahrzeugs ist daher zeitaufwän dig. In the case of electrically or hybrid-electrically powered road vehicles, especially heavy commercial vehicles, it is also known, for example from the patent application DE 102017 203 046 A1, to charge the energy storage device while driving via an energy supply from a two-pole overhead contact line system using a vehicle-mounted pantograph. The current collector includes a pantograph-like frame, wel Ches carries a rocker with two contact strips for each contact pole. During the journey, the contact strips of each contact pole are in sliding contact with the contact wires assigned to the respective contact pole, so that electrical energy can be fed in both directly for the traction drive and for charging the energy storage device. In contrast to ferry operation, when the vehicle is at a standstill, there is no movement of the point-shaped contact point between the contact strip and contact wire, nor is there a cooling airflow, so that when the vehicle is at a standstill, the supply current must be selected so low that there is no damage to the contact strip or contact strip caused by overheating / or contact wire comes. Charging the energy storage device when the vehicle is stationary is therefore time-consuming.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Ladesta tion zum Aufladen eines elektrischen Energiespeichers eines Straßenfahrzeugs, welches zur Energieeinspeisung aus einer zweipoligen Oberleitungsanlage einen Stromabnehmer mit min destens einer anheb- und absenkbaren Schleifleiste je Kon taktpol aufweist, bereitzustellen, die kürzere Ladezeiten im Stillstand des Straßenfahrzeugs ermöglicht. The invention is therefore based on the object of a charging station for charging an electrical energy storage device of a road vehicle, which is used for feeding energy from a Two-pole catenary system has a pantograph with min least one liftable and lowerable contact strip per contact pole to provide, which enables shorter charging times when the road vehicle is stationary.
Die Aufgabe wird gelöst durch eine Ladestation mit den in Pa tentanspruch 1 angegebenen Merkmalen. Zum Aufladen eines elektrischen Energiespeichers eines Straßenfahrzeugs, welches zur Energieeinspeisung aus einer zweipoligen Oberleitungsan lage einen Stromabnehmer mit mindestens einer anheb- und ab senkbaren Schleifleiste je Kontaktpol aufweist, umfasst die Ladestation je Kontaktpol mindestens zwei Ladekontakte, wel che oberhalb einer Ladeposition für das Straßenfahrzeug und derart nebeneinander angeordnet sind, dass je Kontaktpol min destens zwei Kontaktstellen zwischen Schleifleiste und Lade kontakten herstellbar ist. Der elektrische Kontakt zwischen Oberleitungsanlage und Straßenfahrzeug wird durch eine Viel zahl an Kontaktstellen gebildet, über die die Ladeleistung übertragen wird. Die entstehende Stromwärme je Kontaktstelle wird mit zunehmender Anzahl an Kontaktstellen geringer und kann aufgrund der räumlichen Verteilung der Kontaktstellen besser dissipieren. Aufgrund von Beschränkungen des Fahrzeug gewichts und der Fahrzeugabmessungen ist die Dimensionierung der Schleifleisten vorgegeben, so dass die zwei oder mehreren Ladekontakte eine höhere Ladestromstärke erlauben, was die Ladezeit senkt. Je nach gewünschter Ladestromstärke kann die Anzahl der Ladekontakte variiert werden, wobei vorzugsweise zwei, drei oder vier Ladekontakte vorgesehen sind. The object is achieved by a charging station with the features specified in Pa tentans title 1. To charge an electrical energy storage device of a road vehicle, which has a pantograph with at least one lifting and lowering contact strip per contact pole for feeding energy from a two-pole overhead line system, the charging station comprises at least two charging contacts per contact pole, wel che above a charging position for the road vehicle and the like are arranged next to each other that at least two contact points between contact strip and charging contacts can be produced for each contact pole. The electrical contact between the catenary system and the road vehicle is formed by a large number of contact points through which the charging power is transmitted. The electrical heat generated per contact point decreases with an increasing number of contact points and can dissipate better due to the spatial distribution of the contact points. Due to restrictions of the vehicle weight and the vehicle dimensions, the dimensioning of the contact strips is predetermined, so that the two or more charging contacts allow a higher charging current, which reduces the charging time. Depending on the desired charging current, the number of charging contacts can be varied, preferably two, three or four charging contacts being provided.
In einem bevorzugten Ausführungsbeispiel der erfindungsgemä ßen Ladestation sind wenigstens ein Teil der Ladekontakte als Kontaktschienen ausgebildet, die in einem Ladegestell paral lel zueinander federgelagert aufgehängt und quer zu den Schleifleisten des Stromabnehmers des in Ladeposition befind lichen Straßenfahrzeugs ausgerichtet sind. Das Ladegestell kann beispielsweise von einem über die Ladeposition ragenden Seitenausleger getragen sein, welcher an einem neben der La deposition aufgestellten Lademast befestigt ist. Bei positio- niertem Straßenfahrzeug sind die länglichen Kontaktschienen in Fahrzeuglängsrichtung ausgerichtet, so dass sie in Drauf sicht einen rechten oder annähernd rechten Winkel mit den Schleifleisten des Stromabnehmers bilden. Durch weiteres An heben der Schleifleisten nach Kontaktierung der Kontaktschie- nen, werden die Kontaktschienen gegen eine Rückstellkraft von Federelementen gedrückt. Die Anzahl und Anordnung der Feder elemente je Kontaktschiene ist so gewählt, dass eine mög lichst gleichmäßige Andruckkraft über die Kontaktstellen übertragen wird. Die Ladestation dieses Ausführungsbeispiels ist für Ladepositionen geeignet, an der keine Oberleitungsan lage vorhanden ist. Das Straßenfahrzeug fährt im Energiespei cher- oder Hybridbetrieb zur Ladestation und stellt bei Er reichen der Ladeposition den Stromabnehmer auf, um die Schleifleisten zu den Ladekontakten anzuheben. In a preferred embodiment of the charging station according to the invention, at least some of the charging contacts are designed as contact rails, which are suspended in a charging frame paral lel to each other spring-loaded and aligned transversely to the contact strips of the pantograph of the road vehicle located in the loading position. The loading frame can be carried, for example, by a side arm projecting beyond the loading position, which is attached to a loading mast set up next to the loading position. At positio- In the case of a road vehicle, the elongated contact rails are aligned in the longitudinal direction of the vehicle so that, when viewed from above, they form a right or approximately right angle with the contact strips of the pantograph. By raising the contact strips further after contacting the contact rails, the contact rails are pressed against a restoring force by spring elements. The number and arrangement of the spring elements per contact bar is selected so that as uniform a pressure as possible is transmitted across the contact points. The charging station of this embodiment is suitable for charging positions where there is no overhead line system. The road vehicle drives to the charging station in energy storage or hybrid mode and, when reaching the charging position, sets up the pantograph to raise the contact strips to the charging contacts.
In einem weiteren bevorzugten Ausführungsbeispiel der erfin dungsgemäßen Ladestation sind je Kontaktpol ein Ladekontakt durch einen Fahrdraht der Oberleitungsanlage gebildet und die weiteren Ladekontakte als Kontaktschienen ausgebildet, die in einem Ladegestell parallel zum Fahrdraht federgelagert aufge hängt und quer zu den Schleifleisten des Stromabnehmers des in Ladeposition befindlichen Straßenfahrzeugs ausgerichtet sind. Die Ladestation dieses Ausführungsbeispiels kann an La depositionen auf elektrifizierten Oberleitungsstrecken ange ordnet werden. Dabei fungieren die Fahrdrähte jeweils als ein Ladekontakt, die weiteren Ladekontakte werden durch Kontakt schienen analog zum zuvor beschriebenen Ausführungsbeispiel gebildet. Die Kontaktschienen sind dabei etwas oberhalb der Fahrdrähte gehalten, so dass die Schleifleisten bei Aufstel len des Stromabnehmers erst die Fahrdrähte etwas anhebt, um dann Kontakt zu den Kontaktschienen herzustellen. In a further preferred embodiment of the charging station according to the invention, a charging contact is formed for each contact pole by a contact wire of the overhead line system and the other charging contacts are designed as contact rails that are spring-loaded in a charging frame parallel to the contact wire and are suspended transversely to the contact strips of the pantograph of the road vehicle in the charging position are aligned. The charging station of this embodiment can be assigned to La depositionen on electrified overhead lines. The contact wires each act as a charging contact, the other charging contacts are formed by contact rails analogous to the embodiment described above. The contact rails are held slightly above the contact wires, so that the contact strips when the pantograph is set up only lifts the contact wires a little in order to then make contact with the contact rails.
In einem weiteren bevorzugten Ausführungsbeispiel weist das Ladegestell der erfindungsgemäßen Ladestation Begrenzungsmit tel für die Hubbewegung der Schleifleisten auf, welche eine Kontaktposition der Schleifleisten definieren, in welcher die federgelagerten Ladekontakte mit gleicher Federkraft gegen die Schleifleiste drücken. Die Begrenzungsmittel bilden einen mechanischen Anschlag für die Schleifleisten. Wird dieser er reicht, so sind die Federelemente etwa gleichmäßig ausge lenkt, was eine gleichmäßig Verteilung der Andruckkräfte an den Kontaktstellen zwischen Schleifleisten und Ladekontakte sicherstellt. In a further preferred embodiment, the charging frame of the charging station according to the invention has Grenzmit tel for the lifting movement of the sliding strips, which define a contact position of the sliding strips in which the spring-loaded charging contacts counteract with the same spring force press the sanding bar. The limiting means form a mechanical stop for the contact strips. If this is enough, the spring elements are deflected approximately evenly, which ensures an even distribution of the pressure forces at the contact points between sliding strips and charging contacts.
In einem weiteren bevorzugten Ausführungsbeispiel der erfin dungsgemäßen Ladestation ist eine Länge der Kontaktschienen mindestens so groß wie ein Abstand zwischen zwei in Fahr zeuglängsrichtung hintereinander angeordneten Schleifleisten eines Kontaktpols. Dadurch können sowohl Straßenfahrzeuge, deren Stromabnehmer je Kontaktpol nur eine einzige Schleif leiste aufweisen, als auch solche mit einem Paar von in Fahr zeuglängsrichtung hintereinander angeordneten Schleifleisten ihren Energiespeicher aufladen, wobei in letzterem Fall das Straßenfahrzeug so positioniert werden kann, dass jeder Lade kontakt von beiden Schleifleisten eines Kontaktpols kontak tierbar ist. In a further preferred embodiment of the charging station according to the invention, a length of the contact rails is at least as great as a distance between two sliding strips of a contact pole arranged one behind the other in the longitudinal direction of the vehicle. As a result, both road vehicles whose current collectors have only a single sliding strip per contact pole and those with a pair of sliding strips arranged one behind the other in the longitudinal direction of the vehicle can charge their energy storage device, in which case the road vehicle can be positioned so that each charging contact from both Sliding strips of a contact pole can be contacted.
In einem weiteren bevorzugten Ausführungsbeispiel der erfin dungsgemäßen Ladestation ist die Länge der Kontaktschienen mindestens doppelt so groß wie der Abstand zwischen zwei in Fahrzeuglängsrichtung hintereinander angeordneten Schleif leisten eines Kontaktpols. Die längere Ausgestaltung der Kon taktschienen ermöglicht es, dem Fahrer einen gewissen Tole ranzbereich in Fahrtrichtung beim Abstellen seines Straßen fahrzeugs auf der Ladeposition zu bieten, was die Benutzer freundlichkeit der erfindungsgemäßen Ladestation erhöht. In a further preferred embodiment of the charging station according to the invention, the length of the contact rails is at least twice as great as the distance between two sliding strips of a contact pole arranged one behind the other in the longitudinal direction of the vehicle. The longer design of the contact rails makes it possible to offer the driver a certain Tole ranzbereich in the direction of travel when parking his road vehicle on the loading position, which increases the user friendliness of the charging station according to the invention.
In einem weiteren bevorzugten Ausführungsbeispiel der erfin dungsgemäßen Ladestation ist die Länge der Kontaktschienen mindestens so groß wie eine Fahrzeuglänge des Straßenfahr zeugs. Durch eine weitere Verlängerung der Kontaktschienen wird eine Kontaktierung der Ladekontakte durch die Schleif leisten bereits bei Annäherung der Ladeposition und dadurch ein Ladebeginn vor Fahrzeugstillstand möglich. Dies verkürzt wiederum die Zeitspanne für den Ladevorgang des Energiespei chers. In a further preferred embodiment of the charging station according to the invention, the length of the contact rails is at least as great as a vehicle length of the road vehicle. A further lengthening of the contact rails enables the charging contacts to be contacted by the sliding strips when the charging position is approached and thus a start of charging before the vehicle comes to a standstill. This shortens in turn, the period of time for the charging process of the energy storage device.
In einem weiteren bevorzugten Ausführungsbeispiel der erfin dungsgemäßen Ladestation sind je Kontaktpol die Ladekontakte derart voneinander beabstandet, dass die Kontaktstellen der Ladekontakte in seitlichen Endabschnitten der Schleifleiste liegen. Hierdurch können die Schleifleisten unterschiedliche Materialabschnitte aufweisen. So kann deren an der Oberlei tungsanlage stark genutzte Mittelbereich aus Graphit beste hen, während die seitlichen Endabschnitte aus Kupfer oder Aluminium gefertigt sein können. Hierdurch kann der Ver schleiß der Fahrdrähte geringgehalten werden. Über die seit lichen Endabschnitte können hingegen höhere Ladeströme über tragen werden, da die Kontaktstellen zwischen Schleifleisten und Ladekontakten in den Endabschnitten der Schleifleisten liegen. In a further preferred exemplary embodiment of the charging station according to the invention, the charging contacts for each contact pole are spaced from one another in such a way that the contact points of the charging contacts are in lateral end sections of the sliding strip. As a result, the contact strips can have different material sections. Their central area, which is heavily used on the overhead line system, can be made of graphite, while the side end sections can be made of copper or aluminum. As a result, the wear of the contact wires can be kept low. On the other hand, higher charging currents can be carried over the lateral end sections, since the contact points between contact strips and charging contacts are in the end sections of the contact strips.
In einem weiteren bevorzugten Ausführungsbeispiel der erfin dungsgemäßen Ladestation ist das Ladegestell bei anliegenden Schleifleisten gegen eine Hubkraft des Stromabnehmers nach unten bewegbar ausgebildet. Wenn das Ladegestell nach unten bewegbar ist, kann die Kontaktkraft zwischen Schleifleisten und Ladekontakten erhöht werden, da zusätzlich zu den Rück stellkräften der Federelemente eine gegen die AufStellkräfte einer Hubeinrichtung des Stromabnehmers wirken. Die höheren Andruckkräfte verbessern die Stromübertragung. In a further preferred embodiment of the charging station according to the invention, the charging frame is designed to be movable downward against a lifting force of the current collector when the contact strips are in contact. If the charging frame can be moved downwards, the contact force between sliding strips and charging contacts can be increased since, in addition to the restoring forces of the spring elements, a counteracting force against the erecting forces of a lifting device of the pantograph. The higher pressure forces improve the power transmission.
In einem weiteren bevorzugten Ausführungsbeispiel umfasst die erfindungsgemäße Ladestation eine Sensoreinheit zur Erfassung einer Temperatur der Schleifleiste und eine Steuereinheit zur temperaturabhängigen Regelung eines Ladestromes. Hierdurch kann der Ladestrom derart geregelt werden, dass eine Überhit zung der Schleifleiste und dadurch verursachte Schäden ver mieden werden. Die Regelung des Ladestroms kann dabei von der Ladestation aus oder über eine geeignete Kommunikation zwi schen Ladestation und Fahrzeug vom Fahrzeug aus erfolgen. Weitere Eigenschaften und Vorteile der Erfindung ergeben sich aus nachfolgender Beschreibung eines konkreten Ausführungs beispiels anhand der Zeichnungen, in deren In a further preferred embodiment, the charging station according to the invention comprises a sensor unit for detecting a temperature of the contact strip and a control unit for temperature-dependent regulation of a charging current. In this way, the charging current can be regulated in such a way that overheating of the contact strip and the resulting damage are avoided. The charging current can be regulated from the charging station or from the vehicle via suitable communication between the charging station and the vehicle. Further properties and advantages of the invention will become apparent from the following description of a specific embodiment example with reference to the drawings, in which
FIG 1 eine Frontansicht auf ein in einer Ladestation po sitioniertes Straßenfahrzeug, 1 shows a front view of a road vehicle positioned in a charging station,
FIG 2 eine Frontansicht auf Schleifleisten und Ladekon takte eines Kontaktpols aus FIG 1, 2 shows a front view of contact strips and charging contacts of a contact pole from FIG. 1,
FIG 3 ein Seitenansicht auf Schleifleisten und Ladekon takte des Kontaktpols aus FIG 2 im Längsschnitt entlang der Schnittlinie III-III, 3 shows a side view of contact strips and charging contacts of the contact pole from FIG. 2 in a longitudinal section along the section line III-III,
FIG 4 eine Frontansicht auf Schleifleisten und Ladekon takte des Kontaktpols aus FIG 1 in geschlossenem Zustand und 4 shows a front view of contact strips and charging contacts of the contact pole from FIG. 1 in the closed state and
FIG 5 eine perspektivische Ansicht auf Schleifleisten und5 shows a perspective view of contact strips and
Ladekontakte eines Kontaktpols aus FIG 4 schematisch veranschaulicht sind. Charging contacts of a contact pole from FIG. 4 are illustrated schematically.
Gemäß FIG 1 ist ein elektrisch oder hybridelektrisch ange triebenes Straßenfahrzeug 1, beispielsweise ein schweres Nutzfahrzeug, zum Aufladen seines elektrischen Energiespei chers 2 in einer an einer Fahrbahn 3 installierten Ladestati on 4 positioniert. Das Straßenfahrzeug 1 ist mit einem Strom abnehmer 5 zur Energieeinspeisung während der Fahrt aus einer zweipoligen Oberleitungsanlage ausgestattet, von der der Ein fachheit halber nur die als Hin- und Rückleiter ausgebildeten Fahrdrähte 6 über einer der Ladeposition benachbarten Fahr spur der Fahrbahn 3 gezeigt sind. Der Stromabnehmer 5 weist ein pantographenartiges Gestell 7 auf, welches sich auf dem Fahrzeugdach abstützt und mittels einer nicht dargestellten Hubeinrichtung aufstellen und zusammenklappen lässt. Das Ge stell 7 trägt zwei in Fahrzeuglängsrichtung gesehen nebenei nander angeordnete Wippen 8 - für jeden Kontaktpol 9 eine -, welche jeweils mit einem Paar in Fahrzeuglängsrichtung gese hen hintereinander angeordneter Schleifleisten 10 bestückt sind. Benutzt das Straßenfahrzeug 1 eine elektrifizierte Fahrspur, können die Schleifleisten 10 durch Aufstellen des Gestells 7 mit dem jeweiligen Fahrdraht 6 in Schleifkontakt gebracht werden, um Energie aus der Oberleitungsanlage ins Straßenfahrzeug 1 einzuspeisen. According to FIG. 1, an electrically or hybrid-electrically powered road vehicle 1, for example a heavy utility vehicle, is positioned for charging its electrical energy storage device 2 in a charging station 4 installed on a roadway 3. The road vehicle 1 is equipped with a current collector 5 for feeding energy while driving from a two-pole overhead line system, of which, for the sake of simplicity, only the contact wires 6, which are designed as forward and return conductors, are shown above a lane of the roadway 3 adjacent to the loading position. The current collector 5 has a pantograph-like frame 7, which is supported on the vehicle roof and can be set up and folded up by means of a lifting device (not shown). The Ge alternate 7 carries two seen in the longitudinal direction of the vehicle next to each other arranged rockers 8 - one for each contact pole 9 - which are each equipped with a pair of sliding strips 10 arranged one behind the other in the longitudinal direction of the vehicle. If the road vehicle 1 uses an electrified lane, the contact strips 10 can by setting up the Frame 7 can be brought into sliding contact with the respective contact wire 6 in order to feed energy from the overhead line system into the road vehicle 1.
Die Ladestation 4 ist im dargestellten Ausführungsbeispiel jedoch abseits einer elektrifizierten Fahrspur angeordnet und umfasst je Kontaktpol 9 zwei oder mehrere, beispielsweise vier, Ladekontakte 11, welche oberhalb der Ladeposition für das Straßenfahrzeug 1 angeordnet sind. Hierzu können die La dekontakte 11 mit einem Seitenausleger 12 der Ladestation 4 verbunden sein, der von einem seitlich der Fahrbahn 3 aufge stellten Lademast 13 über die Ladeposition ragt. Über nicht dargestellte und in Lademast 13 und Seitenausleger 12 verlau fende, elektrische Leitungen wird die Ladespannung an den La dekontakten 11 der jeweiligen Kontaktpole 9 bereitgestellt. In the exemplary embodiment shown, however, the charging station 4 is arranged away from an electrified lane and comprises two or more, for example four, charging contacts 11 for each contact pole 9, which are arranged above the charging position for the road vehicle 1. For this purpose, the La dekontakte 11 can be connected to a side arm 12 of the charging station 4, which protrudes from a side of the roadway 3 placed loading mast 13 over the loading position. The charging voltage is provided to the La dekontakten 11 of the respective contact poles 9 via electrical lines, not shown and running in the loading mast 13 and the side arm 12.
Gemäß FIG 2 und FIG 3 sind je Kontaktpol 9 vier als Kontakt schienen ausgebildete Ladekontakte 11 in einem Ladegestell 14 federgelagert. Die länglichen Kontaktschienen sind parallel zu einander ausgerichtet und jeweils über beispielsweise zwei Federelemente 15 mit dem Ladegestell 14 verbunden. Die Länge L der Kontaktschienen ist hier deutlich größer als der Ab stand D zwischen den hintereinander liegenden Schleifleisten 10 einer Wippe 8 gewählt, damit ein Toleranzbereich für die Positionierung des Straßenfahrzeugs 1 in Fahrtrichtung zur Verfügung steht. Durch weitere Verlängerung der Kontaktschie- nen wird es möglich, den Ladevorgang bereits vor Erreichen des Stillstands zu starten. Durch Anheben der Wippen 8 drü cken die Schleifleisten 10 die Ladekontakte 11 gegen die Rückstellkraft der Federelemente 15 nach oben, bis die Schleifleisten 10 gemäß FIG 4 und FIG 5 an Begrenzungsmittel 16 anschlagen. Die Begrenzungsmittel 16 können beispielsweise durch Seitenschenkel des u-förmigen Ladegestells 14 gebildet sein. Je Kontaktpol 9 wird elektrischer Kontakt über acht Kontaktstellen geschlossen, über die ein hoher Ladestrom zur Verkürzung der Ladezeit des Energiespeichers 2 fließen kann. In diesem Zustand gewährleisten die ausgelenkten Federelemen te 15 eine über die Kontaktstellen gleichmäßig verteilte An- druckkraft zwischen Schleifleisten 10 und Ladekontakten 11. Zur Erhöhung der Andruckkraft kann das Ladegestell 14 absenk- bar am Seitenhalter 12 befestigt sein, wobei die Ladekontakte 11 gegen die Hubkraft des Stromabnehmers 5 nach unten drü- cken. According to FIG. 2 and FIG. 3, four charging contacts 11 formed as contact rails are spring-mounted in a charging frame 14 for each contact pole 9. The elongated contact rails are aligned parallel to one another and are each connected to the loading frame 14 via, for example, two spring elements 15. The length L of the contact rails is here significantly greater than the Ab was D between the one behind the other contact strips 10 of a rocker 8 selected so that a tolerance range for the positioning of the road vehicle 1 is available in the direction of travel. By extending the contact rails further, it is possible to start the charging process before the system has come to a standstill. By lifting the rockers 8, the sliding strips 10 press the charging contacts 11 upwards against the restoring force of the spring elements 15 until the sliding strips 10 abut against the limiting means 16 according to FIGS. 4 and 5. The limiting means 16 can be formed, for example, by side legs of the U-shaped loading frame 14. For each contact pole 9, electrical contact is made via eight contact points, through which a high charging current can flow to shorten the charging time of the energy store 2. In this state, the deflected spring elements 15 ensure an evenly distributed contact over the contact points. pressure force between contact strips 10 and charging contacts 11. To increase the pressure force, the charging frame 14 can be attached to the side holder 12 so that it can be lowered, the charging contacts 11 pressing downward against the lifting force of the current collector 5.
Durch die Vielzahl an Kontaktstellen kann eine hohe Ladeleis tung übertragen werden, weil die entstehende Stromwärme je Kontaktstelle mit zunehmender Anzahl an Kontaktstellen gerin- ger wird und aufgrund der räumlichen Beabstandung der Kon taktstellen besser dissipieren kann. Due to the large number of contact points, a high charging power can be transmitted because the current heat generated per contact point decreases with an increasing number of contact points and can dissipate better due to the spatial spacing of the contact points.
Die dargestellten Ladekontakte 11 sind hier entlang der Schleifleiste 11 etwa gleichmäßig verteilt. Alternativ können die Ladekontakte 11 so angeordnet werden, dass sie bei Kon taktschluss nur einen seitlichen Endbereich der Schleifleiste 10 kontaktieren, der dann - im Gegensatz zum aus Graphit ge bildeten Mittelbereich - aus Metall, insbesondere Aluminium oder Kupfer, besteht. Dies erlaubt eine weitere Erhöhung der Ladeströme. The charging contacts 11 shown are distributed approximately evenly here along the sliding strip 11. Alternatively, the charging contacts 11 can be arranged in such a way that they only contact a lateral end region of the contact strip 10 when the contact is made, which then - in contrast to the central region formed from graphite - is made of metal, in particular aluminum or copper. This allows the charging currents to be increased further.
Die Ladestation 1 kann ferner, was hier nicht dargestellt ist, eine Sensoreinheit zur Erfassung einer Temperatur der Schleifleiste 10 und eine Steuereinheit zur temperaturabhän- gigen Regelung eines Ladestromes umfassen. Hierdurch kann der Ladestrom derart geregelt werden, dass eine Überhitzung der Schleifleisten 10 und dadurch verursachte Schäden vermieden werden. The charging station 1 can further include, which is not shown here, a sensor unit for detecting a temperature of the contact strip 10 and a control unit for temperature-dependent regulation of a charging current. In this way, the charging current can be regulated in such a way that overheating of the contact strips 10 and damage caused thereby are avoided.

Claims

Patentansprüche Claims
1. Ladestation (4) zum Aufladen eines elektrischen Energie speichers (2) eines Straßenfahrzeugs (1), welches zur Ener gieeinspeisung aus einer zweipoligen Oberleitungsanlage einen Stromabnehmer (5) mit mindestens einer anheb- und absenkbaren Schleifleiste (10) je Kontaktpol (9) aufweist, umfassend je Kontaktpol (9) mindestens zwei Ladekontakte (11), welche oberhalb einer Ladeposition für das Straßenfahrzeug (1) und derart nebeneinander angeordnet sind, dass je Kontaktpol (9) mindestens zwei Kontaktstellen zwischen Schleifleiste (10) und Ladekontakten (11) herstellbar sind. 1. Charging station (4) for charging an electrical energy storage device (2) of a road vehicle (1), which has a pantograph (5) with at least one lifting and lowering contact strip (10) for each contact pole (9) for energy supply from a two-pole overhead line system comprises, for each contact pole (9) at least two charging contacts (11) which are arranged above a charging position for the road vehicle (1) and next to one another in such a way that for each contact pole (9) at least two contact points between the sliding strip (10) and charging contacts (11) can be produced.
2. Ladestation (4) nach Anspruch 1, wobei wenigstens ein Teil der Ladekontakte (11) als Kontaktschienen ausgebildet sind, die in einem Ladegestell (14) parallel zueinander federgela gert aufgehängt und quer zu den Schleifleisten (10) des Stromabnehmers (5) des in Ladeposition befindlichen Straßen fahrzeugs (1) ausgerichtet sind. 2. Charging station (4) according to claim 1, wherein at least some of the charging contacts (11) are designed as contact rails which are suspended in a loading frame (14) parallel to each other federgela device and transversely to the contact strips (10) of the current collector (5) of the Road vehicle in the loading position (1) are aligned.
3. Ladestation (4) nach Anspruch 1, wobei je Kontaktpol (9) ein Ladekontakt durch einen Fahrdraht (6) der Oberleitungsan lage gebildet und die weiteren Ladekontakte (11) als Kontakt schienen ausgebildet sind, die in einem Ladegestell (14) pa rallel zum Fahrdraht (6) federgelagert aufgehängt und quer zu den Schleifleisten (10) des Stromabnehmers (5) des in Ladepo sition befindlichen Straßenfahrzeugs (1) ausgerichtet sind. 3. charging station (4) according to claim 1, wherein for each contact pole (9) a charging contact is formed by a contact wire (6) of the catenary system and the further charging contacts (11) are designed as contact rails, which are parallel in a charging frame (14) suspended from the contact wire (6) and mounted transversely to the contact strips (10) of the pantograph (5) of the road vehicle (1) located in Ladepo position.
4. Ladestation (4) nach Anspruch 2 oder 3, wobei das Ladege stell (14) Begrenzungsmittel (16) für die Hubbewegung der Schleifleisten (10) aufweist, welche eine Kontaktposition der Schleifleisten (10) definieren, in welcher die federgelager ten Ladekontakte (11) mit gleicher Federkraft gegen die Schleifleiste (10) drücken. 4. Charging station (4) according to claim 2 or 3, wherein the Ladege alternate (14) has limiting means (16) for the lifting movement of the sliding strips (10) which define a contact position of the sliding strips (10) in which the spring-loaded charging contacts ( 11) press against the contact strip (10) with the same spring force.
5. Ladestation (4) nach einem der Ansprüche 2 bis 4, wobei eine Länge (L) der Kontaktschienen mindestens so groß wie ein Abstand (D) zwischen zwei in Fahrzeuglängsrichtung hinterei- nander angeordneten Schleifleisten (10) eines Kontaktpols (9) ist. 5. charging station (4) according to one of claims 2 to 4, wherein a length (L) of the contact rails is at least as large as a distance (D) between two in the vehicle longitudinal direction rear- Nander arranged contact strips (10) of a contact pole (9).
6. Ladestation (4) nach Anspruch 5, wobei die Länge (L) der Kontaktschienen mindestens doppelt so groß wie der Abstand (D) zwischen zwei in Fahrzeuglängsrichtung hintereinander an geordneten Schleifleisten (10) eines Kontaktpols (9) ist. 6. charging station (4) according to claim 5, wherein the length (L) of the contact rails is at least twice as large as the distance (D) between two in the vehicle longitudinal direction one behind the other on arranged contact strips (10) of a contact pole (9).
7. Ladestation (4) nach Anspruch 5, wobei die Länge (L) der Kontaktschienen mindestens so groß wie eine Fahrzeuglänge des Straßenfahrzeugs (1) ist. 7. charging station (4) according to claim 5, wherein the length (L) of the contact rails is at least as great as a vehicle length of the road vehicle (1).
8. Ladestation (4) nach einem der Ansprüche 1 bis 7, wobei je Kontaktpol (9) die Ladekontakte (11) derart voneinander beab- standet sind, dass die Kontaktstellen der Ladekontakte (11) in seitlichen Endabschnitten der Schleifleiste (10) liegen. 8. charging station (4) according to one of claims 1 to 7, wherein for each contact pole (9) the charging contacts (11) are spaced from each other such that the contact points of the charging contacts (11) are in lateral end sections of the contact strip (10).
9. Ladestation (4) nach einem der Ansprüche 1 bis 8, wobei das Ladegestell (14) bei anliegenden Schleifleisten (10) ge gen eine Hubkraft des Stromabnehmers (5) nach unten bewegbar ausgebildet ist. 9. charging station (4) according to any one of claims 1 to 8, wherein the charging frame (14) with adjacent contact strips (10) GE gene a lifting force of the pantograph (5) is designed to be movable downwards.
10. Ladestation (4) nach einem der Ansprüche 1 bis 9, umfas send eine Sensoreinheit zur Erfassung einer Temperatur der Schleifleiste (10) und eine Steuereinheit zur temperaturab hängigen Regelung eines Ladestromes. 10. charging station (4) according to one of claims 1 to 9, including a sensor unit for detecting a temperature of the contact strip (10) and a control unit for temperature-dependent regulation of a charging current.
EP20753881.0A 2019-09-24 2020-07-20 Charging station for charging an electrical energy accumulator of a road vehicle Pending EP3999371A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019214552.3A DE102019214552A1 (en) 2019-09-24 2019-09-24 Charging station for charging an electrical energy storage device in a road vehicle
PCT/EP2020/070447 WO2021058168A1 (en) 2019-09-24 2020-07-20 Charging station for charging an electrical energy accumulator of a road vehicle

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EP3999371A1 true EP3999371A1 (en) 2022-05-25

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US (1) US20220332200A1 (en)
EP (1) EP3999371A1 (en)
DE (1) DE102019214552A1 (en)
WO (1) WO2021058168A1 (en)

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DE102022106111B4 (en) * 2022-03-16 2023-10-12 Kummler + Matter Ag Modular contact rail, loading device, vehicle depot and transport system

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Publication number Priority date Publication date Assignee Title
AT108923B (en) * 1924-09-30 1928-02-25 Siemens Schuckertwerke Wien Rotatable clamp for double-wire contact lines.
DE102011076623A1 (en) * 2011-05-27 2012-11-29 Siemens Ag Non-rail vehicle
ES2868425T3 (en) * 2013-08-09 2021-10-21 Schunk Transit Sys Gmbh Fast charging system as well as procedure for the electrical connection of a vehicle to a charging station
GB2526118A (en) * 2014-05-14 2015-11-18 Sylvan Ascent Inc Vehicle charging arrangement
DE102017000915A1 (en) * 2017-02-02 2018-08-02 Man Truck & Bus Ag Device for charging an electrical energy store of a vehicle having an electric drive
DE102017203046A1 (en) * 2017-02-24 2018-08-30 Siemens Aktiengesellschaft Current collector for multipolar overhead line system
DE102018201634A1 (en) * 2018-02-02 2019-08-08 Volkswagen Aktiengesellschaft Method for charging an electrically operable vehicle in the state

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DE102019214552A1 (en) 2021-03-25
US20220332200A1 (en) 2022-10-20

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