DE102012010850A1 - Charging system for charging traction battery of electrically driven motor car, has stationary charging station provided with wake-up circuitry so that charging station is switched from quiescent state into operational state - Google Patents

Charging system for charging traction battery of electrically driven motor car, has stationary charging station provided with wake-up circuitry so that charging station is switched from quiescent state into operational state Download PDF

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Publication number
DE102012010850A1
DE102012010850A1 DE201210010850 DE102012010850A DE102012010850A1 DE 102012010850 A1 DE102012010850 A1 DE 102012010850A1 DE 201210010850 DE201210010850 DE 201210010850 DE 102012010850 A DE102012010850 A DE 102012010850A DE 102012010850 A1 DE102012010850 A1 DE 102012010850A1
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Germany
Prior art keywords
charging
charging station
stationary
vehicle
wake
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DE201210010850
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German (de)
Inventor
Marc Wiegand
Norbert Hees
Andreas Grewing
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Leopold Kostal GmbH and Co KG
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Leopold Kostal GmbH and Co KG
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    • 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
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • 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
    • B60L53/12—Inductive energy transfer
    • 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

Abstract

The charging system has a stationary charging station that is attached to motor car. The stationary electrical winding (L2) is provided with coupling device and an on-board battery charger (1) with a vehicle electrical winding (L1). The stationary charging station is provided with a wake-up circuitry (3) so that the charging station is switched from a quiescent state into an operational state through the vehicle battery charging unit.

Description

Die Erfindung betrifft ein Ladesystem zum induktiven Laden der Traktionsbatterie eines elektrisch angetriebenen Kraftfahrzeugs, umfassend eine ortsfeste Ladestation mit einer an das Kraftfahrzeug anfügbaren, eine stationäre elektrische Wicklung umfassenden Ankoppelvorrichtung und eine fahrzeugseitige Batterieladeeinheit mit einer fahrzeugseitigen elektrischen Wicklung.The invention relates to a charging system for inductive charging of the traction battery of an electrically driven motor vehicle, comprising a fixed charging station with an attachable to the motor vehicle, a stationary electric winding coupling device and a vehicle-side battery charger with a vehicle-side electrical winding.

Bei derartigen Ladesystemen wird elektrische Energie aus der an ein Wechselspannungs- oder Drehstrom-Versorgungsnetz angeschlossenen, ortsfesten Ladestation induktiv auf das Kraftfahrzeug übertragen.In such charging systems, electrical energy is transmitted inductively from the stationary charging station connected to an AC or three-phase supply network to the motor vehicle.

Wenn dazu die Ankoppelvorrichtung der ortsfesten Ladestation an das Kraftfahrzeug angefügt ist, bilden die stationäre elektrische Wicklung der Ladestation und die fahrzeugseitige elektrische Wicklung gemeinsam einen Transformator aus, wobei die stationäre elektrische Wicklung die Funktion der Primärwicklung und die fahrzeugseitige elektrische Wicklung die Funktion der Sekundärwicklung des Transformators erfüllen. Die elektrischen Wicklungen können dabei beispielsweise als Luftspulen und/oder als Spulen mit magnetischem Kern ausgeführt sein, wobei Form und Querschnitt sowohl der Spulen als auch der ggf. vorhandenen Kerne an die jeweiligen Erfordernisse bezüglich Bauraum, möglicher Abstände der Spulen zueinander sowie zu übertragender elektrischer Leistung angepasst werden können.When the docking device of the stationary charging station is attached to the motor vehicle, the stationary electrical winding of the charging station and the vehicle-side electrical winding together form a transformer, wherein the stationary electrical winding, the function of the primary winding and the vehicle-side electrical winding, the function of the secondary winding of the transformer fulfill. The electrical windings can be designed, for example, as air coils and / or coils with magnetic core, wherein shape and cross section of both the coils and the possibly existing cores to the respective requirements in terms of space, possible distances between the coils to each other and to be transmitted electrical power can be adjusted.

Im Vergleich zu Ladesystemen, bei denen die Verbindung zwischen Ladestation und Fahrzeug mittels eines Kabels mit Steckverbinder manuell hergestellt wird, bietet ein induktives Ladesystem die Möglichkeit deutlich komfortablere Bedienkonzepte einzusetzen.Compared to charging systems, where the connection between the charging station and the vehicle is made manually by means of a cable with a connector, an inductive charging system offers the possibility to use significantly more comfortable operating concepts.

Bei einem solchen induktiven Ladesystemen besteht daher beispielsweise ein Bedarf, auf Seiten der ortsfesten Ladestation eine automatische Erkennung eines sich zum Aufladen an diese annähernden Fahrzeugs vorzusehen. Da die ortsfeste Ladestation gleichzeitig aber einen möglichst geringen Stromverbrauch aufweisen soll, solange kein Ladevorgang erfolgt, müssen diese Anforderungen miteinander in Einklang gebracht werden.In such an inductive charging system, for example, there is a need, on the part of the stationary charging station, to provide automatic detection of a vehicle approaching it for charging. Since the fixed charging station should have the lowest possible power consumption at the same time, as long as no charging process, these requirements must be reconciled.

Bei dem erfindungsgemäßen Ladesystem gelingt dies dadurch, dass die ortsfeste Ladestation eine Aufweckschaltung umfasst, mittels derer die Ladestation durch die fahrzeugseitige Batterieladeeinheit von einem Ruhezustand in einen Betriebszustand versetzbar ist.In the case of the charging system according to the invention, this is achieved in that the stationary charging station comprises a wake-up circuit, by means of which the charging station can be displaced from a rest state into an operating state by the vehicle-side battery charging unit.

Mit den ladestationsseitig und fahrzeugseitig vorhandenen Komponenten des Ladesystems besteht die Möglichkeit, Energie von Fahrzeug zur Ladestation zu übertragen, und diese Energie zum Aufwecken der Ladestation zu verwenden. Zum Aufwecken wird nur sehr wenig Energie benötigt, daher kann das Aufwecken auch bei größeren Abständen zwischen Ladestation und Fahrzeug, zum Beispiel beim Anfahrvorgang, realisiert werden. Dadurch ist es möglich, dass die Ladestation die Steuerung des Anfahrvorgangs z. B. mittels einer Einparkhilfe übernimmt.With the charging station side and on the vehicle existing components of the charging system, it is possible to transfer energy from the vehicle to the charging station, and to use this energy to wake up the charging station. For waking up only very little energy is required, therefore the waking can be realized even with larger distances between charging station and vehicle, for example during the starting process. This makes it possible that the charging station, the control of the starting process z. B. by means of a parking aid.

Die gesamte Energie, die zum Wecken der Ladestation benötigt wird, wird vom Fahrzeug zur Ladestation übertragen. Das ermöglicht einen Betrieb der Ladestation ohne Stromverbrauch vom Netz.All the energy needed to wake up the charging station is transferred from the vehicle to the charging station. This allows operation of the charging station without power consumption from the network.

Vorzugsweise wird dabei mittels der fahrzeugseitigen elektrischen Wicklung Energie auf die stationäre elektrische Wicklung der ortsfesten Ladestation übertragen, wobei durch das Aufmodulieren eines Datensignals auf die über die elektrischen Wicklungen übertragene Energie zum Beispiel eine Identifikation des Fahrzeugs an der Ladestation ermöglicht ist.Preferably, by means of the vehicle-side electrical winding energy is transmitted to the stationary electrical winding of the stationary charging station, wherein by modulating a data signal on the energy transmitted through the electrical windings, for example, an identification of the vehicle is made possible at the charging station.

Weitere vorteilhafte Ausgestaltungen und Weiterbildungen des erfindungsgemäßen Ladesystems ergeben sich aus den weiteren Unteransprüchen und werden anhand der Zeichnung erläutert.Further advantageous embodiments and further developments of the charging system according to the invention will become apparent from the other dependent claims and will be explained with reference to the drawing.

Dabei zeigt die einzige Figur in einer schematischen Darstellung eine Ausgestaltung eines erfindungsgemäßen Ladesystems.The single FIGURE shows a schematic representation of an embodiment of a charging system according to the invention.

Zum Aufwecken der ortsfesten Ladestation wird vom Fahrzeug ein Energieimpuls ausgesendet. Hierzu dienen die in der fahrzeugseitigen Batterieladeeinheit 1 bereits vorhandenen Komponenten, nämlich der Generator AC und die fahrzeugseitige elektrische Wicklung L1 des induktiven Ladereglers. Diese elektrische Wicklung L1 wird für kurze Zeit mit einem Wechselsignal angesteuert und überträgt somit elektrische Energie. Die empfangene Energie wird auf Seiten der ortsfesten Ladestation mit der stationären elektrischen Wicklung L2 empfangen und mit dem Dioden D1–D4 gleichgerichtet. Hierzu dient die in diesem Falle passiv betriebene Generatorschaltung 2 der Ladestation.To wake up the fixed charging station, an energy pulse is emitted by the vehicle. Serve for this purpose in the vehicle-side battery charger 1 already existing components, namely the generator AC and the vehicle-side electrical winding L1 of the inductive charge controller. This electrical winding L1 is driven for a short time with an alternating signal and thus transmits electrical energy. The received energy is received on the stationary charging station side with the stationary electric winding L2 and rectified with the diodes D1-D4. The purpose of this is the passively operated generator circuit in this case 2 the charging station.

Die Dioden D1–D4 sind als Inversdioden der Schaltelemente bereits in der Generatorschaltung 2 vorhanden. Die Energie wird in der Aufweckschaltung 3 verwendet, um einen kleinen Energiespeicher 4 zu laden, aus dem die für den Aufwach-Vorgang benötigte Logik versorgt wird. Die Aufweckschaltung 3 besteht aus dem Energiespeicher 4, in dem die Energie zwischengespeichert wird. Es folgt ein Spannungsregler 5 zur Glättung der Spannung, sowie ein Mikrocontroller 6 zur Steuerung sowie ein Relaistreiber 7, der das Relais 8 zur Netzspannungsversorgung der Elektronik 9 der Ladestation ansteuert.The diodes D1-D4 are already in the generator circuit as inverse diodes of the switching elements 2 available. The energy is in the wake-up circuit 3 used a small energy storage 4 from which the logic required for the wake-up process is supplied. The wake-up circuit 3 consists of the energy storage 4 in which the energy is cached. This is followed by a voltage regulator 5 for smoothing the voltage, as well as a microcontroller 6 for control and a relay driver 7 who is the relay 8th to the mains voltage supply of the electronics 9 the charging station controls.

Claims (5)

Ladesystem zum Laden der Traktionsbatterie eines elektrisch angetriebenen Kraftfahrzeugs, umfassend eine ortsfeste Ladestation mit einer an das Kraftfahrzeug anfügbaren, eine stationäre elektrische Wicklung (L2) umfassenden Ankoppelvorrichtung und eine fahrzeugseitige Batterieladeeinheit (1) mit einer fahrzeugseitigen elektrischen Wicklung (L1), dadurch gekennzeichnet, dass die ortsfeste Ladestation eine Aufweckschaltung (3) umfasst, mittels derer die Ladestation durch die fahrzeugseitige Batterieladeeinheit (1) von einem Ruhezustand in einen Betriebszustand versetzbar ist.Charging system for charging the traction battery of an electrically driven motor vehicle, comprising a stationary charging station with a dockable to the motor vehicle, a stationary electrical winding (L2) coupling device and a vehicle-side battery charger ( 1 ) with a vehicle-side electrical winding (L1), characterized in that the fixed charging station, a wake-up circuit ( 3 ), by means of which the charging station by the vehicle-side battery charging unit ( 1 ) is displaceable from an idle state to an operating state. Ladesystem nach Anspruch 1, dadurch gekennzeichnet, dass zum Aufwecken der ortsfesten Ladestation Energie vom Fahrzeug auf die ortsfeste Ladestation übertragen wird.Charging system according to claim 1, characterized in that for waking the stationary charging station energy is transmitted from the vehicle to the fixed charging station. Ladesystem nach Anspruch 2, dadurch gekennzeichnet, dass mittels der fahrzeugseitigen elektrischen Wicklung (L1) Energie auf die stationäre elektrische Wicklung (L2) der ortsfesten Ladestation übertragen wird.Charging system according to claim 2, characterized in that by means of the vehicle-side electrical winding (L1) energy is transmitted to the stationary electrical winding (L2) of the stationary charging station. Ladesystem nach Anspruch 3, dadurch gekennzeichnet, dass die fahrzeugseitige elektrische Wicklung (L1) für kurze Zeit mit einem Wechselsignal angesteuert wird und elektrische Energie überträgt, die auf Seiten der ortsfesten Ladestation mit der stationären elektrischen Wicklung (L2) empfangen und mit den Dioden (D1, ..., D4) der Generatorschaltung (2) gleichgerichtet wird.Charging system according to claim 3, characterized in that the vehicle-side electrical winding (L1) is driven for a short time with an alternating signal and electrical energy that receives on the part of the fixed charging station with the stationary electrical winding (L2) and with the diodes (D1 , ..., D4) of the generator circuit ( 2 ) is rectified. Ladesystem nach Anspruch 3, dadurch gekennzeichnet, dass die über die elektrischen Wicklungen (L1, L2) übertragene Energie mit einem Datensignal moduliert wird.Charging system according to claim 3, characterized in that via the electrical windings (L1, L2) transmitted energy is modulated with a data signal.
DE201210010850 2012-05-31 2012-05-31 Charging system for charging traction battery of electrically driven motor car, has stationary charging station provided with wake-up circuitry so that charging station is switched from quiescent state into operational state Withdrawn DE102012010850A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114194042A (en) * 2020-09-02 2022-03-18 沃尔沃汽车公司 System and method for wireless charging of electric vehicles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110221387A1 (en) * 2010-03-09 2011-09-15 Robert Louis Steigerwald System and method for charging an energy storage system for an electric or hybrid-electric vehicle
US20120095617A1 (en) * 2011-10-06 2012-04-19 Ford Global Technologies, Llc Vehicle guidance system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110221387A1 (en) * 2010-03-09 2011-09-15 Robert Louis Steigerwald System and method for charging an energy storage system for an electric or hybrid-electric vehicle
US20120095617A1 (en) * 2011-10-06 2012-04-19 Ford Global Technologies, Llc Vehicle guidance system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114194042A (en) * 2020-09-02 2022-03-18 沃尔沃汽车公司 System and method for wireless charging of electric vehicles
CN114194042B (en) * 2020-09-02 2024-01-30 沃尔沃汽车公司 System and method for wireless charging of electric vehicles

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