WO2012143056A2 - Method for providing a charge current and charge device - Google Patents

Method for providing a charge current and charge device Download PDF

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Publication number
WO2012143056A2
WO2012143056A2 PCT/EP2011/056422 EP2011056422W WO2012143056A2 WO 2012143056 A2 WO2012143056 A2 WO 2012143056A2 EP 2011056422 W EP2011056422 W EP 2011056422W WO 2012143056 A2 WO2012143056 A2 WO 2012143056A2
Authority
WO
WIPO (PCT)
Prior art keywords
charging
current
ac
alternating current
provision
Prior art date
Application number
PCT/EP2011/056422
Other languages
German (de)
French (fr)
Other versions
WO2012143056A3 (en
Inventor
Markus BÖHM
Mahmut Halil SÜER
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2011/056422 priority Critical patent/WO2012143056A2/en
Publication of WO2012143056A2 publication Critical patent/WO2012143056A2/en
Publication of WO2012143056A3 publication Critical patent/WO2012143056A3/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0027Stations for charging mobile units, e.g. of electric vehicles, of mobile telephones
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods 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
    • B60L53/11DC charging controlled by the charging station, e.g. mode 4
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods 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
    • B60L53/14Conductive energy transfer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20Methods 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 converters located in the vehicle
    • B60L53/22Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036Charger exchanging data with battery
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7038Energy storage management
    • Y02T10/7055Controlling vehicles with more than one battery or more than one capacitor
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/121Electric charging stations by conductive energy transmission
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/127Converters or inverters for charging
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/128Energy exchange control or determination
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/14Plug-in electric vehicles

Abstract

The invention relates to a method for providing a charge current for a vehicle battery (90, 106) of an electrically driven vehicle (21, 100). A charge device (1) captures an AC from an AC energy supply network (16). In a first operating mode of the charge device (1), the AC is guided to an AC/DC converter (30) of the charge device and the DC provided by said AC/DC converter (30) is guided to a charge cable (20) for charging the vehicle battery (90). In a second operating mode of the charge device, the AC is guided to the charge cable while bypassing the AC/DC converter (30). The invention also relates to a charge device.

Description

description

Method for providing a charging current and charging device

It is expected that in the future electrically powered vehicles in large numbers will be on the roads. Such an electrically drivable vehicle has a traction battery, which provides the electrical energy required for the driving operation. discharged

Traction batteries must be recharged if necessary by means of a charging device. There are electrically powered vehicles that must be supplied with alternating current to recharge their traction batteries ("AC charging"). Other electrically powered vehicles must be supplied with DC power to recharge their traction batteries

("DC charging").

The invention has for its object to provide a method and an apparatus with which a charging current for a traction battery of an electrically driven vehicle can be provided in a versatile manner.

This object is achieved by a method and a charging device according to the independent claims. Advantageous embodiments of the method and the La ¬ deeinrichtung are given in the respective dependent claims. Is given According to the invention a method for providing Stel ¬ len a charging current for a traction battery of an electrically driven vehicle, in which method a charging means receives AC power from an AC power supply network, in a first operating mode of the charging device of the alternating current to an AC-DC converter the charger is directed and supplied by the AC-DC converter DC supplied to a charging cable for charging the traction battery is in a second mode of operation of the charging device, the AC is passed bypassing the AC-DC converter to the charging cable, and provided in the first Be ¬ operating mode by means of the charging cable DC power as charging current for the traction battery or in the second mode of operation by means of the charging cable Alternating current is provided as a charging ¬ current for the traction battery. In this method, it is advantageous that DC current is provided as charging current in the first operating mode and AC current is provided as charging current for the second operating mode

Fahrbatterie is provided. This makes it possible, as well ¬ vehicles that require direct current and charging current, as well as vehicles to provide that AC as a charging current benöti ¬ gen, with charging current. It is also advantageous that the charging current is provided both in the first operating mode and in the second operating mode by means of the same Ladeka ¬ bels available. This universal insertion ¬ face method can be implemented easily and inexpensively.

The method may be configured such that in the first operating mode by means of a first switching position of a

Switching the AC power is passed to the AC-DC converter and is passed in the second mode of operation by means of a second switching position of the switching device of the alternating current, bypassing the AC-DC converter to the charging cable. Here is advantageously guided by a simple switching input ¬ direction of coming from the AC power grid AC either the AC-DC converter or bypassing the AC-DC converter to the charging cable. Such a switching device can be easily and inexpensively z. B. realize as a changeover or contactor. The method may also be configured such that there is provided in the first operating mode of the direct current to at least two Lei ¬ tern (for example, two wires) of the charging cable and in the second operating mode, the AC Any artwork at least these two conductors of the charging cable is provided. It is advantageous that can be transmitted by means of the at least two conductors of the Ladeka ¬ bels in the first operating mode of the direct current and in the second operating mode of the alternating current via said at least two conductors of the charging cable can be accurately transferred. As a result, the number of conductors in the charging cable can be kept small, whereby the charging cable can be realized inexpensively. The method may also be such that both in the first operating mode of the direct current and in the second operating mode, the alternating current is provided on one and the same charging plug arranged on the charging cable. In this case, it is particularly advantageous that both the direct current and the alternating current are provided to one and the same charging connector or transmitted via this charging connector. As a result, only one charging plug on the charging cable is necessary for the first operating mode and for the second operating mode. This is another reason why the process can be implemented cost-effectively.

The process may also proceed so that both the provision of the AC current and providing the DC current is con- trolled by a control unit of the charging device, the provision of the AC current and providing the DC current is monitored by a monitoring unit of the Ladeeinrich ¬ tung both and A communication with the vehicle is or can be carried out by a communication unit of the charging device both during the provision of the alternating current and during the provision of the direct current. Here is beneficial ¬ way, that only one control unit, monitoring ¬ unit and / or communication unit is necessary to provide DC or AC as a charging current. This also makes the process inexpensive and easy to implement. According to the invention, a charging device is also disclosed for charging a traction battery of an electrically driven vehicle, comprising:

 a connection means for electrically connecting the charging device to an AC power supply network,

 an AC-DC converter,

 - a charging cable for electrical connection to the vehicle, and

 - A switching device, which originated in a first switching position of the AC power supply network

AC to the AC-DC converter leads, and the AC in a second switching position, bypassing the AC-DC converter leads to the charging cable. Advantageously, by means of the charger switch means, the alternating current originating from the AC power supply network is either conducted to the AC-DC converter (to rectify it there and to pass the resulting direct current to the charging cable) or the alternating current is bypassed. DC converter to the charging cable ge ¬ passes. As a result, can be provided with the charging device either DC or AC as a charging current to the charging cable. By means of such a charging device so driving batteries can be charged by electrically powered vehicles, which require DC power as a charging current. By means of this charging device but also traction batteries of such electrically driven vehicles can be charged, which require alternating current as charging current. Thus, a universally applicable charging device is specified.

This charging device can be designed such that the La ¬ dekabel at least two conductors (eg, two wires), where the direct current is provided at the first switching position and where the alternating current is provided in the second switching position. Advantageously, at least the two conductors of the charging cable both the

DC as well as the alternating current provided. As a result, only a few conductors are necessary in the charging cable to both To provide DC and AC for charging the traction battery can.

The charging device can also be designed such that a charging plug is arranged on the charging cable, to which the alternating current is provided both in the first switching position of the direct current and in the second switching position. In this case, the direct current as well as (in the second switching position) the alternating current is advantageously provided both by means of a single charging plug arranged on the charging cable (in the first switching position). As a result, only a single charging plug is necessary in the charging device, whereby the charging device can be realized inexpensively and easily.

The charging device may further comprise:

 a control unit which controls both the provision of the alternating current and the provision of the direct current,

a monitoring unit which monitors and / or provides both the provision of the alternating current and the provision of the direct current

- a communication unit by means of both the Be ¬ riding make the alternating current as well as for providing the DC current communication with the vehicle by ¬ feasible or performed.

It is advantageous in that only one single Steue ¬ approximation unit, monitoring unit and / or Kommunikationsein ¬ uniform is required to Ström both AC DC also provide to the charging cable or the charging plug. Each one control unit, monitoring unit and / or communication unit for the provision of direct current and one control unit, monitoring unit and / or communication unit for the provision of alternating current - as would be necessary for separate DC and AC charging devices - are not required. Thus, the charger can be can produce kos ¬-effectively. In the following the invention on the basis of an exemplary embodiment is explained in detail. An exemplary embodiment of a charging device in a first operating mode for providing direct current and in FIG

FIG. 2 shows the charging device in a second operating mode for providing alternating current.

In Figure 1, a charging device 1 is shown, whose elements are divided into a power electronics housing 4 and a charging station 8. (His and the elements of the charging device 1 arranged in a common housing or a common charging station In another embodiment, Kings ¬ NEN).

The charging device 1 has a connection means 12 in the form of an electric cable, which connects the charging device 1 with a transformer 14. The transformer 14 is electrically connected to an AC power supply network 16. (The transformer 14 is optional.) The charging device 1 may be connected to a low voltage or medium voltage AC power supply network using the transformer Alternatively, the charging device 1 may be connected to a low voltage AC power supply network without the transformer 14. ) Furthermore, the charging device 1, a charging cable 20, which the charging device 1 with a

electrically driven vehicle 21 electrically connects. The charging cable 20 comprises power conductor 22 and communication ¬ conductor 24. About the at least two power conductors 22 (cores 22) is transferred electrical charging current from the charging device 1 to the connected electrically driven vehicle 21. Via the communication conductors 24 (wires 24) there is a data exchange / communication between the charging device 1 and the electrically driven vehicle 21. The power conductors 22 are for much larger currents designed as the communication conductor 24, because on the power conductor 22 a significantly larger electrical

Power must be transferred. The power electronics housing 4 has an optional Wech ¬ selstrom measuring unit 25, an optional power filter 26, switching means 28, an AC-DC converter 30, a DC filter 32, an optional fuse unit 34, an optional AC filter 36, rungs- a Steue- and Communication unit 38 and a Überwachungssein ¬ unit 40.

The control and communication unit 38 controls the function of which is arranged in the power electronics housing Ele ¬ elements and communicates with a control and communication ¬ tion unit 72 of the charging station 8. The control unit 40 serves to monitor the function of which is arranged in the power electronics housing elements, and optionally also the radio ¬ tions of the arranged in the charging station 8 elements.

The switching device 28 can assume at least two switching positions. The AC-DC converter 30 and the DC filter 32 form a first current path for the charging current, which is flowed through in the first switching position of the switching device 28 from the charging current (DC current path or DC strand). The fuse unit 34 and the AC filter 36 form a second current path for the charging current, which is flowed through in the second switching position of the switching device 28 from the charging current (AC current path or AC strand).

The charging station 8 comprises a user interface 70 (human machine-interface 70), the control and Kommunikationsein ¬ standardized 72, an optional measuring unit 74, a ladeeinrich- tung-side vehicle communication unit 76 to the Realisie ¬ tion of the communication between the charging device 1 and the electrically driven vehicle 21 and an identification and authentication unit 78. The charging station 8 is a power transmitting cable 80 and a Kommuni ¬ cation cable 82 with the power electronics housing. 4

electrically connected. In this case, the user interface 70 is used for communication with a human user and is designed, for example, as a keyboard display unit. The identification ¬ and authentication unit 78 is used to identify and authenticate the human user, it can be configured for example as a as such known RFID Reader). The vehicle communication unit 76 serves to realize the communication between the charging device 1 and the electrically driven vehicle 21. The power conductors 22 and the communication conductors 24 of the charging cable 20 are electrically connected to a charging plug 86 which is arranged on the charging cable 20. The charging ¬ plug 86 can be electrically connected to a charging socket 88 of the electrically powered vehicle 21st Of the electrically driven vehicle 21, only a traveling battery 90 and a vehicle-side control unit 92 for controlling the charging of the traveling battery 90 are shown. In the figure, communication conductors / communication lines are shown as broken lines and power conductors / power transmitting conductors are shown as solid lines.

The AC power supply network 16 (in the exemplary embodiment is a low-voltage power supply network with three-phase alternating current and a voltage of 400 V) provides electrical energy in the form of alternating ¬ current to the transformer 14. The transformer transforms the alternating current to the required voltage level ; the transformed alternating current then passes via the connection ¬ medium / cable 12 to the line filter 26 of the charging device 1. The line filter 26 filters out disturbances from the alternating current, in particular disturbing harmonics are filtered out. The alternating current is then transmitted from the line filter 26 to the switching device 28, which in the exemplary embodiment game is designed as a switch. The Schalteinrich ¬ device 28 has two switching positions.

The first operating mode of the charging device 1 is shown in FIG. In this first mode of operation takes the

 Switching the first switching position. In this first switching position, the alternating current originating from the AC power supply network is transmitted from the switching device 28 to the AC-DC converter 30. The AC-DC converter 30 directs the

AC equal, so produces at its output DC. This DC current is then transmitted to the DC filter 32, which smoothes the DC current and thereby possibly filtered out existing harmonic residues from the DC. (In the DC filter 32 also further security-relevant functions can be implemented: Example ¬ example, in the DC filter 32, a diode to be installed in order to ensure the direction of current flow from the charger to the vehicle may be further DC separator installed on error. power-off the charging cable.) In the first mode of operation, the DC power is transmitted from the DC filter 32 via the cable 80 to the measuring unit 74, which measures voltage, current or transmitted power. At the output of the measuring unit 74 of the direct current is fed in the first operating mode in the Leis ¬ tung conductor 22 of the charging cable 20 and transmitted via this charging cable 20 to the charging plug 86th The charging plug 86 is connected to the charging socket 88 of the electrically drivable ¬ cash vehicle 21, whereby the ausgestalte in the first operating mode as a DC charging current via the charging connector 86 and the charging socket is passed 88 to the driving battery 90 of the electrically powered vehicle 21st Of the

Current flow or the energy flow of the first operating mode is represented by arrows 95 and by means of broad lines for the participating (power-transmitting, current-transmitting or energy-transmitting) cables. During the charging process, the vehicle-side control unit 92 communicates via the communication conductors 24 of the charging cable 20 with the vehicle communication unit 76 of the La ¬ deeinrichtung 1. In this first mode of operation of the charging device 1 is thus provided as charging current direct current to the traction battery 90 of the electrically driven vehicle 21 to charge.

In Figure 2, the second operating mode of the charging device 1 is shown, in which the switching device 28, the second

Switching position occupies. In this second switching position, the alternating current originating from the AC power supply network is conducted from the switching device 28 to the fuse unit 34. The fuse unit 34 may include, for example, fuses or a residual current circuit breaker. The alternating current is conducted via the fuse unit 34 to the AC filter 36, which filters out disturbances such as harmonics or the like from the alternating current. Then, the AC current is passed through the cable 80 to the measuring unit 74 that the voltage current strength ¬ or transmitted by means of the alternating current

electric power measures. The measuring unit 74 passes the alternating current via the charging cable 20 and the charging plug 86 on to an electrically drivable vehicle 100. Via a charging socket 102, the alternating current passes to an AC-DC converter 104, which converts the alternating current into direct current. With this direct current, a traction battery 106 of the vehicle 100 is charged. A control unit 108 controls the charging ¬. The current flow and the energy flow of the second mode of operation is illustrated by means of cable Pfeiffer ¬ len 97 and by means of thick lines, for the parties (performance-transmitting, current-transmitting or power transmitting). By means of the charging device 1 so the traction battery can be charged by electrically powered vehicles, regardless of whether the charging socket 88 of the electrically driven vehicle 21 DC or whether the charging socket 102 of the electrically driven vehicle 100 AC is required as a charging current. If DC charging is required at the charging socket, this is communicated to the charging device 1 either by the control unit 92 of the electrically drivable vehicle 21 via the communication conductors 24 or a user of the vehicle inputs this information via the user interface 70. Thereafter, the La ¬ signaling device 1 proceeds in its first mode of operation in which the switching means 28 assumes the first shift position. The alternating current supplied by the AC power supply network 16 is then converted into direct current by the AC-to-DC converter 30, and the direct current is provided as a charging current to the charging plug 86. If alternating current is required at the charging socket 102 for charging the traction battery 106, this information is also transmitted to the charging device 1 either via the communication conductors 24 or via the user interface 70. Then the second operating mode of the charging device 1 is taken and the switching device takes its second

Switch position on. The alternating current is bypassed the AC-DC converter to the charging cable 20 gelei ¬ tet and provided to the charging plug 86. The charging device and the method described have a number of advantages. For charging the traction battery of vehicles which require direct current as a charging current and for charging the traction battery of vehicles which require alternating current as the charging current, it is not necessary to provide separate direct current charging devices and alternating current charging devices. Rather, with a single charging device and a single method, both a DC charging and an AC charging of the

electrically driven vehicle are performed. This may be particularly on subsequent charging stations an advantage needs to be where no distinction is made by DC Ladesäu ¬ len or AC charging stations so that the space required for the preparation of Ladeeinrich- Reduced lines and charging stations and the utilization of the established charging devices or charging stations is increased.

Furthermore, it is advantageous that, in comparison with the variant, in each case an AC charging device and a

Set up DC charging device - many elements of the charging device described can be used both for the provision of direct current and the provision of alternating current. Thus, in particular the control and communication unit 72, 38, the monitoring unit 40 and used the communication unit 76 for communication Zvi ¬ rule vehicle and charger for both the provision of direct current and for providing alternating current. So here are significant synergy effects and savings potential can be realized.

Furthermore, it is advantageous that for DC charging and AC charging only a single charging cable (here, in particular, the power conductor 22) needs to be designed for the high currents. In particular, no two independent charging cables and associated charging plugs (one for the DC charging and one for the AC charging) are needed, which represents a significant cost advantage. A method and a charging device has been described, with which both AC and DC current can be provided on a charging cable or a charging plug as a charging current. This makes it possible to realize a universally usable and versatile method or charging device in which many elements can be used both for AC charging and for DC charging.

Claims

claims
1. A method for providing a charging current for a traction battery (90, 106) of an electrically drivable vehicle (21, 100), wherein in the method
 a charging device (1) receives AC power from an AC power supply network (16),
 in a first operating mode of the charging device (1), the alternating current is conducted to an AC-DC converter (30) of the charging device and direct current supplied by the AC-DC converter (30) to a charging cable (20) for charging the traction battery ( 90),
 - In a second mode of operation of the charging device, the alternating current is bypassed the AC-DC converter (30) to the charging cable (20) is passed, and
- In the first mode of operation by means of the charging cable (20) DC as charging current for the traction battery (90) bereitge ¬ provides or in the second mode of operation by means of Laade cable (20) alternating current is provided as a charging current for the traction battery (106).
2. The method according to claim 1,
d a d u r c h e c e n c i n e s that
- In the first operating mode by means of a first switching ¬ position of a switching device (28), the alternating current to the AC-DC converter (30) is passed and
- In the second mode of operation by means of a second switching ¬ position of the switching device (28) of the alternating current bypassing the AC-DC converter (30) to the charging cable (20) is passed.
3. The method according to claim 1 or 2,
d a d u r c h e c e n c i n e s that
in the first operating mode, the direct current is supplied to at least two conductors (22) of the charging cable (20) and in the second operating mode the alternating current is supplied to at least these two conductors (22) of the charging cable (20) is provided.
4. The method according to any one of the preceding claims,
d a d u r c h e c e n c i n e s that
 in both the first operating mode the direct current and in the second operating mode, the alternating current is supplied to one and the same charging plug (86) arranged on the charging cable (20).
5. The method according to any one of the preceding claims,
d a d u r c h e c e n c i n e s that
 a control unit (38, 72) of the charging device (1) controls both the provision of the alternating current and the provision of the direct current,
- By a monitoring unit (40) of the charging device both the provision of the alternating current as well as the provision ¬ set of direct current is monitored and / or
 - By a communication unit (76) of the charging device in both the provision of the alternating current and in the provision of the direct current communication with the vehicle (21, 100) is feasible.
6. charging device (1) for charging a traction battery (90, 106) of an electrically driven vehicle (21, 100), which comprises:
- a connecting means (12) for electrically connecting the charging device (1) to an AC power supply network ¬ (16)
an AC-DC converter (30),
 - A charging cable (20) for electrical connection to the vehicle (21, 100), and
a switching device (28) which, in a first switching position, directs the alternating current originating from the alternating current power supply network (16) to the alternating current / direct current converter (30) and which in a second switching position bypasses the alternating current direct current Translator (30) to the charging cable (20) passes.
7. Loading device according to claim 6,
d a d u r c h e c e n c i n e s that
 - The charging cable (20) has at least two conductors (22) at which the direct current is provided in the first switching position and at which the alternating current is provided in the second switching position.
8. Loading device according to claim 6 or 7,
d a d u r c h e c e n c i n e s that
 - On the charging cable (20) a charging plug (86) is arranged, is provided at both in the first switching position of the DC and in the second switching position of the AC power.
9. Loading device according to one of claims 6 to 8,
marked by
- a control unit (38, 72) which controls both the READY ¬ len of the AC current and providing the DC current,
 - A monitoring unit (40) which monitors both the provision of the alternating current and the provision of direct current and / or
- A communication unit (76), by means of both in the provision of the alternating current as well as in the Stel ¬ len of the direct current communication with the vehicle (21, 100) is feasible.
PCT/EP2011/056422 2011-04-21 2011-04-21 Method for providing a charge current and charge device WO2012143056A2 (en)

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PCT/EP2011/056422 WO2012143056A2 (en) 2011-04-21 2011-04-21 Method for providing a charge current and charge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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WO2012143056A3 WO2012143056A3 (en) 2013-01-03

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EP2974903A1 (en) * 2014-07-15 2016-01-20 EnBW Energie Baden-Württemberg AG Local area charging network with at least one charging system for charging electric vehicles, charging system with at least one charging station and method for operating a charging network with at least one charging system for charging electric vehicles

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KR0168109B1 (en) * 1993-12-07 1999-04-15 전성원 Charging device and its method for a mutual input of ac and dc
US5548200A (en) * 1994-07-06 1996-08-20 Norvik Traction Inc. Universal charging station and method for charging electric vehicle batteries
JP5291909B2 (en) * 2007-09-21 2013-09-18 富士重工業株式会社 Electric vehicle charging device
CN102763302A (en) * 2009-08-11 2012-10-31 威罗门飞行公司 Stored energy and charging appliance

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2974903A1 (en) * 2014-07-15 2016-01-20 EnBW Energie Baden-Württemberg AG Local area charging network with at least one charging system for charging electric vehicles, charging system with at least one charging station and method for operating a charging network with at least one charging system for charging electric vehicles

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