WO2020169290A1 - Dispositif et procédé pour fournir de l'énergie électrique au niveau d'une station de charge - Google Patents

Dispositif et procédé pour fournir de l'énergie électrique au niveau d'une station de charge Download PDF

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Publication number
WO2020169290A1
WO2020169290A1 PCT/EP2020/051346 EP2020051346W WO2020169290A1 WO 2020169290 A1 WO2020169290 A1 WO 2020169290A1 EP 2020051346 W EP2020051346 W EP 2020051346W WO 2020169290 A1 WO2020169290 A1 WO 2020169290A1
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WO
WIPO (PCT)
Prior art keywords
charging station
energy
connection
power
supply network
Prior art date
Application number
PCT/EP2020/051346
Other languages
German (de)
English (en)
Inventor
Ingo Kledewski
Original Assignee
Innogy Se
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 Innogy Se filed Critical Innogy Se
Priority to EP20701444.0A priority Critical patent/EP3953208A1/fr
Publication of WO2020169290A1 publication Critical patent/WO2020169290A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
    • 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
    • B60L53/305—Communication interfaces
    • 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
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/51—Photovoltaic means
    • 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
    • B60L53/66—Data transfer between charging stations and vehicles
    • B60L53/665—Methods related to measuring, billing or payment
    • 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
    • B60L53/68—Off-site monitoring or control, e.g. remote control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12—Remote or cooperative charging
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S50/00—Market activities related to the operation of systems integrating technologies related to power network operation or related to communication or information technologies
    • Y04S50/10—Energy trading, including energy flowing from end-user application to grid

Definitions

  • the subject matter relates to a device and a method for providing electrical energy at a charging station.
  • Feed-in fees of approx. 12 ct / kWh and costs of approx. 30 ct / kWh result in a margin of 18 ct / kWh for self-consumption of the self-produced electricity from the photovoltaic system.
  • the terms current flow and energy flow can be used synonymously.
  • the direction of current flow is understood to mean the direction of energy flow, even if these terms are physically differentiated when considering alternating currents in a temporal resolution.
  • a freely definable current or energy flow direction is marked with positive values and the opposite flow direction with negative values. If the current direction of energy flow or direction of current or energy or current is used, these terms can generally be used interchangeably.
  • DE 10 2012 210284 A1 discloses a system with a photovoltaic system, an electric vehicle and charging stations, with excess energy being fed back into a power grid.
  • the task is to make the energy fed into a supply network by a user usable for an electric vehicle.
  • An objective system includes, in particular, a
  • a public or semi-public charging station (charging station) connected to the power supply network can be set up to charge electric vehicles.
  • a large number of charging stations can be connected to the power supply network
  • the public charging station can also be operated privately and is then used in the sense of the object by a participant who is not the operator of this charging station or who is not the operator of this charging station
  • the charging station is not in the subscriber's house distribution network, but is physically away from it and connected to the supply network.
  • the user charges their electric vehicle at the public charging station near their employer.
  • the user can also, for example, go shopping and be there
  • the public charging station can be connected to the supply network via a
  • a control device can be provided in the area of the public charging station, in particular in or on the public charging station.
  • the control device can be implemented by the public charging station.
  • the public charging station and / or the control device comprises at least one first communication interface.
  • the first communication interface can communicate with a first counting device and / or the control device and / or a backend which is designed to control and monitor a large number of charging stations.
  • the first communication interface is
  • LAN local area network
  • WLAN wireless local area network
  • Bluetooth wireless personal area network
  • ZigBee ZigBee
  • EnOcean KNX interface
  • the public charging station is connected to the
  • Power supply network especially in the area of low voltage or medium voltage connected.
  • the charging station Between the charging station and the charging station connection, the charging station
  • the first counting device can be arranged which measures an electrical energy transmitted between the charging station and the charging station connection or a power flow between the charging station and the charging station connection.
  • the counting device can be arranged in or on the charging station.
  • the first counting device can be a functional part of the control device.
  • the first counting device can be part of the public charging station.
  • the control device, the first counting device and / or the public charging station can be spatially separated or arranged together or in groups in a housing.
  • Control device a power flow between the charging station and the
  • the control signal being dependent on a measured value that is recorded at a network-side supply network connection that is spatially separated from the charging station connection.
  • the term generating plant can be understood not only as a photovoltaic plant, but also for other generating plants for generating electrical energy, for example wind power plants, biomass plants, CHP plants or the like.
  • the aim of all systems is to use the electricity they produce themselves as independently as possible.
  • gray current the current drawn from the power supply network or current mixed with this current.
  • the electricity from the distribution network comes partly from renewable sources. Since, however, according to the generation mix, it also includes gray current components from z. B. contains fossil power plants, it is called gray current.
  • the generating plant is connected to a supply network
  • Power supply network especially in the area of low voltage or medium voltage, in particular an AC voltage network connected.
  • a house distribution network can be provided between the generating plant and the supply network connection.
  • the generating plant can be connected to the house distribution network and / or the supply network connection via a converter, in particular an inverter, for example an AC / AC converter or a DC / AC converter.
  • a second counter is arranged, which one between the
  • House distribution network connection and the supply network connection transmitted electrical energy or a power flow between the house distribution network connection and the supply network connection.
  • This second counter can be understood as a household counter.
  • the second counting device be designed as an SLP or RLM counter.
  • An SLP meter is a standard load profile meter and an RLM meter is a recording performance measurement meter.
  • a temporal resolution of the power flow cannot be determined retrospectively on an SLP meter, only an amount of energy can be determined.
  • the average power and the energy can be recorded for an observation period, for example a quarter of an hour.
  • An RLM meter thus offers a temporal resolution of the power flow, which can be used for a later balancing with counter values of power flows at a participant.
  • the second counting device can be set up as a measuring system, in particular as an intelligent measuring system.
  • a measuring system has a measuring sensor, for example a smart meter, with which power and power flow directions can be determined.
  • Counting registers can be formed which can be addressed separately depending on the direction of power flow measured by the measuring system. This
  • Counting registers offer a temporal resolution of the power flows, at least in an observation period, for example a quarter of an hour, which can also be used for balancing.
  • the first counting device can be formed in accordance with the second counting device.
  • the second counting device can detect the amounts of energy / electrical power that is fed into the house distribution network and / or fed back from the house distribution network into the supply network.
  • a feed and feedback unit can be provided in the area of the house distribution network.
  • the feed and feedback unit can be formed as part of the converter.
  • the feed and feedback unit can also be formed as part of the second counting device.
  • the feed and feedback unit can also be formed as part of a domestic charging station connected to the house distribution network.
  • the feed and feedback unit can each be formed by one of the named devices themselves.
  • the second counting device can also be spatially integrated into the feed and feedback unit.
  • the second counting device and the feed and feedback unit can each individually or together be functional parts of a setting device or form the setting device.
  • the feedback unit and further components of the adjustment device can be arranged spatially separately or together or in groups in a housing.
  • the setting device can be formed as part of a domestic charging station.
  • a setting device which is arranged in particular in the area of the subscriber, in particular spatially in the area of the first counter, can generate and send a control signal.
  • the participant is, for example, the owner of a residential unit.
  • the residential unit can also have several residents or users.
  • the residential unit can be, for example, a single or multi-family house or a rental house.
  • a backfeed can mean that green electricity from the house distribution network into the Supply network is fed.
  • a feed can mean that gray and / or green electricity is fed into the house distribution network from the supply network.
  • the domestic charging station can be connected to the house distribution network and designed to charge an electric vehicle.
  • the domestic charging station and / or the setting device comprises at least one second communication interface.
  • the second communication interface can communicate with the second counting device and / or the setting device and a backend.
  • the communication interface is, for example, a LAN, WLAN, Bluetooth, ZigBee, EnOcean, KNX interface.
  • the home charging station can also be connected to a home automation system, for example.
  • the home charging station can be assigned to a user or participant. Alternatively, it is possible for the home charging station to be assigned to several users.
  • the user or participant can use the home charging station manually, via a smartphone app via the backend or via the
  • the user also owns an electric vehicle.
  • the electric vehicle can be used overnight at home
  • the second and / or first counting device can be arranged in such a way that it detects the power and / or energy that the electric vehicle draws. This does not apply to the charging station's own contribution.
  • the second and / or first counting device can be arranged between a charging controller in the charging station and an outlet for a charging cable at the charging station and thus only record the power and / or energy drawn by the electric vehicle.
  • Such an arrangement is also conceivable and intended in the context of this application.
  • With the help of such a first counter it is possible to capture "the related and / or output electric energy of the charging station. This is useful in order to be able to carry out a balancing with the second counting device on a subscriber on which the energy generation plant is operated, as will be described below.
  • the second and / or first counting device described here can both
  • Measuring devices and counters can be verified and not verified.
  • the user or participant can, for example, configure and control the public charging station manually via a smartphone app via the backend, in particular start, interrupt or end a charging process.
  • the charging station connection at the public charging station can preferably be arranged in the same network level in which the subject energy generation takes place. Preferably, between the charging station connection and the
  • Supply network connection can also be used at a higher network level. Both the public charging station and the generation systems can be connected in higher or lower and in particular in different network levels.
  • the charging station connection is spatially separated from the supply network connection.
  • the control device set a power flow between the public charging station and the charging station connection as a function of the external control signal. It is thus possible for the charging station to receive electrical energy triggered by the external control signal.
  • the control signal is objectively dependent on a measured value in the second counting device on which
  • the control signal therefore makes it possible to charge an electric vehicle synchronously with feeding electrical energy into the energy supply network from a generation plant.
  • the previously mentioned control device can be arranged spatially in the area of the public charging station or partially separated from it in a backend.
  • the setting device can be arranged spatially at the subscriber, the domestic charging station, the second counting device, at the supply network connection or at least partially spatially separated therefrom in the backend.
  • the backend can receive the count values of the second and / or first counting device or measured values of the measuring devices and generate the corresponding signals from them.
  • the response signal mentioned below can also be generated by the backend.
  • the external control signal specifies an instantaneous power.
  • An instantaneous power can indicate apparent power or resolved active and reactive power or also only active power.
  • the control device can the
  • a current intensity can be set which also determines the amount of the instantaneous power.
  • the instantaneous power be recorded at the supply network connection.
  • the participant can use the Supply network connection connect a generator to the supply network.
  • a generator can be a previously described generation plant.
  • the participant endeavors to use the electrical energy generated by his generator as fully as possible himself in order to keep the margin described above through his own consumption as high as possible.
  • the public charging station in question is used with the system in question, which can be operated spatially separated from the supply network connection.
  • the supply network connection and the charging station connection are made by comparing the power flows or amounts of energy that are exchanged at the supply network connection with the power flows or amounts of energy that are exchanged on the
  • Time-synchronized power balancing as well as time-synchronized energy balancing is possible.
  • the power flows at the charging station connection and at the supply network connection are added to a lower limit value, preferably less than 1kW, in particular less than 100W, preferably around 0W, with opposite signs. This means that the power flows balance each other out and that the total power consumption on the one hand is covered by a power output on the other. Unless technical
  • Performance restrictions oppose the goal of a complete performance equilibrium, the goal is to minimize the remaining balance within the scope of the technical performance restrictions.
  • a charging station usually has an available output power between 4.6 kW and 90 kW.
  • a power flow from a generating plant can also between 10 kW and a few 10 kW.
  • a power at the supply network connection differs from a power at the charging station connection.
  • the charging station is operated with the same power as possible as the
  • the limit value is approximated, which is in particular less than 1kWh, preferably less than 0.1kWh, in particular less than 0.01kWh, preferably around 0kWh.
  • a minimum of the energy balance is aimed for per balancing period.
  • Green electricity supply network connection can be fed in and, at the same time, an amount of electricity corresponding to the green electricity can be consumed at the charging station connection. This applies both to time-synchronous services and to time-synchronous amounts of energy.
  • the external control signal specifies an energy in a viewing interval.
  • a viewing interval is in particular 1 min, 5 min, 10 min or a quarter of an hour.
  • the power flow between the charging station and the charging station connection then begins in such a way that at the end of the observation interval between the charging station and the Charging station connection exchanged energy that corresponds to the specified energy.
  • information on the energy that has accumulated up to now can be specified by the external control signal within a viewing interval with a higher temporal resolution than the duration of the viewing interval, so that in the course of the viewing interval the goal of the best possible alignment of the exchanged energy quantities at the supply network connection and on the
  • Charging station connection can be reached.
  • the energies are recorded by measurement technology that have been exchanged with the supply network up to a point in time within the observation interval at the charging station connection and at the supply network connection.
  • the control device sets an energy flow in the opposite direction at the charging station connection. The aim is to minimize the remaining energy difference balance at the end of the observation interval.
  • suitable counting means e.g. are recorded in accordance with calibration law.
  • the control direction can preferably use measured values from these counting means. The use of measured values from other non-calibrated measuring devices is also possible in one embodiment for the control.
  • the power provided by the generating plant cannot be consumed within the residential unit at the house distribution network connection.
  • the power provided there is from the house distribution network via the supply network connection, in particular with the help of the input and
  • Feedback unit fed back into the supply network.
  • the user needs electrical energy for his electric vehicle at the public charging station at the same time.
  • the amount of electrical energy consumed by the public charging station can be transmitted from the control device to the backend. The amount of the
  • Supply network connection Electrical energy fed into the supply network can be transmitted from the adjustment device to the backend.
  • the backend offsets the two amounts and netted them as described above.
  • the amount of energy required for the charging process was fed into the supply network with the help of the generating plant via the supply network connection. It is advantageously possible that in such a scenario the user does not have to draw any additional electrical energy and also have to pay for it.
  • the user is, as it were, in a virtual electricity network within the home.
  • the second and the first counting device preferably have a common time standard.
  • time synchronization takes place via a time server.
  • the control device and the setting device are set up for bidirectional communication with one another and / or the backend, so that both the control signal and the response signal can be exchanged.
  • the user identifies himself to the
  • the identification number can for example be on a smartphone, in his
  • the public charging station or the control device reports to the backend via the first communication interface that the user would like to charge an electric vehicle with the identification number.
  • the backend uses the identification number to check whether the user
  • the public charging station is activated and the desired charging process can begin.
  • the backend can also determine that the home charging station is assigned to the user.
  • the user when initializing the charging process, can specify whether only the energy fed in at the supply network connection should be used for a charging process at the public charging station.
  • the second meter reports the amount of energy consumed to the backend at regular intervals.
  • the backend then uses the control signal to instruct the public charging station to add an amount of energy equal to the amount of energy fed into the
  • the user can also select a hybrid version of the charging process.
  • the public charging station charges the electric vehicle up to the desired state of charge of the battery. If the amount of energy fed in at the supply network connection is not sufficient for this, additional energy can be drawn from the supply network. The user will be billed for the additional energy drawn.
  • Adjustment device can send a control signal and the control device can receive a control signal.
  • the setting device can receive a response signal and the control device can send a response signal.
  • the control signal and response signal can be created via and / or by the backend. If we are talking about the public charging station with the backend communicates, this can also mean that the control device communicates with the backend and vice versa. If we are talking about the domestic charging station or the feed and feedback unit communicating with the backend, this can also mean that the setting device communicates with the backend and vice versa.
  • the setting device transmits the energy or power fed into the supply network together with a unique transaction identification number in a data packet.
  • the data packet can be part of the control signal.
  • the values of the amount of energy or power required for this can be made available to the first meter device, for example.
  • Transaction identification number can be assigned to the user, for example.
  • the transaction identification number can, for example, be used for
  • the data packet can, for example, also include a counter reading of the second counter.
  • the counter reading indicates, for example, which data packet is involved.
  • a plurality of data packets are transmitted during a loading process.
  • the backend evaluates the data packet received by the setting device and then sends the control device the control signal with the one to be loaded
  • Amount of energy or the power preferably also as a data packet with the same structure.
  • the evaluation on the part of the backend can take into account the charging mode specified by the user during initialization and / or a load management setting. Alternatively, it is possible that the setting device only at the end of the
  • the energy fed into the supply network is transmitted to the backend.
  • the backend will use the
  • the amount of energy fed into the supply network is calculated with the amount of energy required for the charging process and, depending on the difference, an action carried out. Either he will be charged an amount if the amount of energy drawn is greater than the amount of energy fed in. Otherwise a credit can be issued.
  • the setting device is designed to measure the state of the second counting device and / or the feed and feedback unit, in particular the amount of energy fed into the supply network, by the second
  • the setting device is designed to be included in the
  • the setting device reports the into the supply network every 15 minutes
  • the aforementioned regularity can therefore mean that data can be transmitted every 15 minutes.
  • the adjusting device and / or comprises
  • Control device at least two communication interfaces, so that a redundant communication connection to the backend can be present.
  • the communication interface (s) can be designed, for example, to establish a LAN, GSM, UMTS, LTE or 5G communication connection. It is also possible that the first communication interface is designed to be functionally identical to the second communication interface.
  • control device is designed to control or regulate the feed and feedback unit via at least one communication interface. This advantageously makes it possible to provide the amount of energy required by the electric vehicle during the charging process through the feed and feedback unit. This is advantageous, for example, when the residential unit has an additional physical energy storage unit, such as an accumulator, which is connected to the house distribution network. Energy can then possibly be used via this be fed into the supply network if the generating plant, possibly
  • less energy is fed into the electric vehicle in a first phase of the charging process than is fed into the supply network at the supply network connection. This advantageously makes it possible to build up a type of energy buffer. During the balancing, it is determined that less energy is consumed at the charging station connection than at
  • the amount of the balance can be accumulated over one or more observation intervals. This cumulative amount can be understood as an energy buffer. If, during the balancing process, it is determined in a later observation period that more energy is being consumed at the charging station connection than is being fed in at the supply network connection, the amount can be reduced. If the connection to the public charging station is interrupted, the charging process does not have to be interrupted, because in such a case the energy buffer can be used up. In this way, even charging processes can also be guaranteed.
  • the energy buffer can prevent performance drops
  • the energy buffer can also be used to bridge a data packet that the backend has not received from the charging station. If a data packet cannot be received or evaluated by the backend, the charging process does not have to be automatically interrupted thanks to the energy buffer, but the energy buffer can be used up.
  • the energy buffer can be a numerical value, which can be both positive and negative.
  • a positive numerical value of the energy buffer means, for example, that during the charging process, the amount of energy that is in the
  • the supply network connection was fed into the supply network is greater than the amount of energy that is used during the charging process from the charging station connection
  • a negative numerical value of the energy buffer means, for example, that during the charging process, the amount of energy that was fed into the supply network at the supply network connection is less than the amount of energy that was absorbed by the charging station connection during the charging process and loaded into the electric vehicle.
  • a positive numerical value enables, for example, the use of time-variable load management on the part of the backend and / or the public charging station.
  • the backend and / or the public charging station can decide on the basis of a current load situation of the supply network when the electric vehicle should be charged with what power.
  • the user can specify that the numerical value of the energy buffer must not become negative.
  • the numerical value of an energy buffer can, for example, be assigned to one or more (for example a family) users (or participants) and / or temporarily to a charging process.
  • the assignment to a user can, for example, also be realized via a contract account assigned to the user. That is, the numerical value of an energy buffer would only be assigned indirectly to a user, since the numerical value of an energy buffer would be assigned to a contract account and this contract account is assigned to a user.
  • the numerical value of an energy buffer can, for example, be stored and managed centrally in the backend.
  • the energy buffer is therefore a kind of virtual energy store. If the charging process is canceled prematurely,
  • the first charging station can, for example, also be an inductive one
  • 3 to 5 each show an exemplary charging process at a charging station
  • a residential unit 110 for example a single-family house, of a user (hereinafter also referred to as a customer) comprises a power generation system 114, in particular a photovoltaic system, a feed and feedback unit 112, a smart meter 113 (second meter) and a private charging station 111 Power generation plant 114 may
  • the energy generation system 114 is connected to a house distribution network via a house distribution network connection 151.
  • loads such as a domestic charging station 111 or other loads can be arranged.
  • the feed-in and feedback unit 112, in particular comprising a converter, can be arranged between the energy generation system 114 and the house distribution network connection 151. In the illustration, the feed and feedback unit 112 is between the
  • House distribution network connection 151 and a supply network connection 150 can be arranged.
  • the feed and feedback unit 112 can also be in several parts and in parts between the energy generation system 114 and the house distribution network connection 151 and in parts between the house distribution network connection 151 and a Supply network connection 150 can be arranged.
  • the feed and feedback unit 112 can also have an adjustment device 116 described above.
  • the smart meter 113 is shown as an example in FIG.
  • the smart meter 113 can be the second
  • Counting device can be arranged on the supply network connection 150.
  • FIG. 1 does not show the conceivable ones
  • the home charging station 111 can have both a feed and feedback unit 112 or the smart meter 113 and the power generation system 114
  • the feed and feedback unit 112 is connected to a public supply network (in particular an alternating current network) 155 via the supply network connection 150.
  • the feed-in and feed-back unit 112 is designed to feed excess electrical energy from the power grid within the residential unit into the public supply grid (power grid) 155.
  • the feed and feedback unit 112 and / or the smart meter 113 is designed to detect the amount of energy fed back into the public power grid 155.
  • a public or semi-public charging station 120 is designed to provide a
  • the public or semi-public charging station 120 (also called public charging station 120) can be located, for example, in a public parking lot or in a parking lot on company premises or in a shopping center.
  • the charging station 120 is connected to the public power grid 155 via a charging station connection 121.
  • the electrical energy required to charge the electric vehicle can be drawn by the charging station 120 from the public power grid 155.
  • a previously described control device 122 is arranged in or on the charging station 120. In or on the charging station 120 is a previously described first
  • charging station 120 Only one charging station 120 is shown for clarity. When it is mentioned below that the charging station 120 is communicating, this can also mean that the control device 122 is communicating.
  • the system structure shown also includes a backend 140.
  • the backend 140 is a downstream network structure, such as a database server, on which information can be stored or from which it can be retrieved.
  • the back end 140 is sketched as a cloud symbol.
  • the backend 140 is connected to the charging station 120 and / or the control device 122 in terms of communication.
  • the backend 140 can, for example, authenticate a user / customer at the [semi] public charging station 120, start or end a charging process of an electric vehicle 130, control a charging process of an electric vehicle 130 or a load management of several
  • Carry out charging stations The amount of energy drawn from the public power grid 155 at the charging station connection can be communicated to the backend 140 via this communication connection.
  • backend 140 is via another, not shown
  • Amount of energy to be communicated to the backend 140 is amount of energy to be communicated to the backend 140.
  • the backend 140 includes at least one customer-specific data record 160.
  • the customer-specific data record 160 includes at least one numerical value of the
  • a positive numerical value of the energy buffer means, for example, that during the charging process, the amount of energy that is removed from the
  • Supply grid connection 150 was fed in is greater than the amount of energy that was drawn from charging station connection 121 during the charging process at a charging station 120 and that was charged into electric vehicle 130.
  • a negative numerical value of the energy buffer means, for example, that during the charging process the
  • the amount of energy that was fed into the public electricity network 155 at the supply network connection 150 from the residential unit's internal electricity network is smaller than the amount of energy that is used during the charging process at a charging station 120 on
  • Charging station connection 121 was obtained and charged into the electric vehicle 130.
  • the customer-specific data record 160 includes in particular further data, such as e.g. an identification number for authentication at a charging station 120, the address of the customer, a contract account of the customer, a stored one
  • FIG. 2 shows an exemplary sequence of a charging process.
  • FIG. 2 is explained with reference to the components shown in FIG. 1.
  • FIG. 1 In one
  • authentication step 501 a customer authenticates himself at a public or semi-public charging station 120 in order to charge his electric vehicle 130.
  • Authentication can be performed using an identification number.
  • the identification number can be stored, for example, on a smartphone, in his electric vehicle 130 or in a charging cable. This allows the Customer initialize the charging process using his smartphone, his electric vehicle 130 or his charging cable.
  • the charging station 120 reports to the backend 140 via a communication connection that the customer would like to charge an electric vehicle 130 with the identification number.
  • the backend 140 uses the transmitted identification number to check whether the customer is authorized to charge an electric vehicle 130 at the charging station 120. For this purpose, the backend 140 can use the
  • the backend 140 can also determine that the customer is assigned a feed and feedback unit 112 according to the invention and / or a smart meter 113 and / or a private charging station 111. in the
  • Authentication step SOlist it is also possible that the customer can select or decide which operating mode (previously also called version) is selected for the upcoming charging process.
  • the two possible operating modes are explained in more detail with reference to this figure.
  • the backend 140 establishes a communication connection with the feed and feedback unit 112, a setting device 114, the smart meter 113 and / or the private charging station 111 of the residential unit 110.
  • the further communication link mentioned in FIG. 1 is established.
  • the charging process can begin in a third step 503.
  • the selection of the operating mode is selected by the backend 140 with regard to a load management to be carried out, provided that the customer does not make a selection of the operating mode.
  • the amount of energy fed in is not used during the charging process (521)
  • the backend 140 feeds the feed and feedback unit 112 into the public power grid 155
  • the end of the charging process can take place, for example, by fully charging an energy store of the electric vehicle 130, but also by removing the charging cable.
  • the amount of energy ascertained or recorded in step 522 is temporarily stored in the customer-specific data record 160 of the customer.
  • Amount of energy is greater than that in 521 for charging on
  • Charging station connection 121 related amount of energy.
  • a difference is calculated which can be positive as well as negative or equal to zero. If the amount of energy fed into the public electricity network 155 at the supply network connection 150 is greater than that determined in step 521 on
  • Charging station connection 121 related amount of energy required for the charging process for example, the difference can be positive. If the on
  • the difference can be negative, for example.
  • the difference calculated in 523 is used in a finalization step 504 to create a credit note or an invoice using the customer-specific data record 160 for the customer. If the difference is positive, for example, the customer can be credited for the difference. The credit can be stored in the customer-specific data record 160, for example. If the difference is negative, an invoice for the amount of the difference can be provided for the customer by means of an electricity price, for example. The invoice can, for example, be stored in the customer-specific data record 160 and then sent to the customer.
  • the loading process is ended (505). If an operating mode for the charging process in the third step 503 (or in the
  • Authentication step 501) has been selected, in which no additional electrical energy from the public power grid 155 is to be used, a positive numerical value of the energy buffer is generated in a buffer step 511.
  • This generation can be characterized in that the electric vehicle 130 is not charged during a certain period of time, but an amount of energy is fed into the public power network 155 at the supply network connection 150.
  • the specific time span can be, for example, two hours, one hour or only half an hour.
  • a positive numerical value of the energy buffer is stored in the customer-specific data record 160 of the backend 140.
  • a certain amount of energy is am
  • Charging station connection 121 obtained from the charging station 120 within a certain time interval for the electric vehicle 130.
  • the specific amount of energy depends on that stored in the customer-specific data record 160
  • the specific amount of energy should not be greater than the numerical value of the energy buffer. It is conceivable, for example, that the specific amount of energy is deliberately smaller than the numerical value of the energy buffer. This can be beneficial
  • the charging power delivered by the charging station 120 to the vehicle 130 depends on the level of the determined amount of energy and the length of the specific time interval and is adapted accordingly.
  • the end of the charging process step 512 is reached after the specific time interval.
  • the amount of energy actually drawn from the charging station 120 at the charging station connection 121 is determined and the numerical value of the energy buffer stored in the customer-specific data record 160 is then adjusted. Under certain circumstances (for example, if a technical defect occurs), the amount of energy actually drawn from the charging station 120 may differ from the amount of energy previously determined.
  • a subsequent checking step 513 it is checked, for example by the backend 140, whether the charging process of the electric vehicle 130 has been completed. This can be the case when the energy store of the electric vehicle 130 has reached a previously determined state of charge. If it is established in the checking step 513 that the charging process of the electric vehicle has been completed, the finalization step 504 (described above) takes place.
  • Backends 140 detects or determines the amount of energy fed into the public power grid 155 at the supply network connection 150. This determined or recorded amount of energy is offset against the numerical value of the energy buffer stored in the customer-specific data record 160. Then, based on the numerical value of the energy buffer, a specific amount of energy is determined for a subsequent charging process step 512. In this determination, for example other factors, such as load management or the current state of charge of the energy store of the electric vehicle 130, may also be important.
  • Step 514 is followed by a further charging process step 512 with the amount of energy determined in 514 and a specific time interval. If a charging process is unexpectedly terminated during 512 or 514 (for example due to a technical defect or a charging cable being pulled out), the will take place
  • Finalization step 504 the numerical value of the energy buffer stored in the customer-specific data record 160 and the amount of energy actually used by the charging station 120 in step 512 being taken into account.
  • the difference determined in the consideration can be processed further, for example in the form of a credit note or invoice, as mentioned above, for example.
  • Figures 3 to 5 each show an exemplary charging process on one
  • Charging station 120 Several graphs are shown per figure, i.e. per charging process. Each graph visualizes the course of a loading process-specific variable over time. The exact values for the sizes are not decisive for one.
  • the X-axis is scaled linearly and a value on the X-axis corresponds to a time value.
  • the electrical power currently fed into the public power grid 155 at the supply network connection 150, in particular through the feed and feedback unit 112 is shown over time.
  • the accumulated amount of energy fed into the public power grid 155 at the supply network connection 150 since the start of the charging process is shown.
  • the current charging power from the charging station 120 is shown over time.
  • the numerical value of the energy buffer is shown over time.
  • the values of the electrical power fed into the public power grid 155 at the supply network connection 150 were generated pseudo randomly.
  • the X-axes are the zero level of the Y-axis.
  • Fig. 3 is a
  • the charging power in the the next further step 514 or in the loading process steps 512 is not adapted. For this reason, it can be seen that the charging power remains constant after a time period 311 within the buffer step 511 during the entire charging process.
  • the specific time intervals 320 of the charging process step 512 are constant. Only two specific time intervals 320 are shown in the figure. On the
  • the three other specific time intervals were not drawn in.
  • the specific time intervals can be, for example, an hour, half an hour or a quarter of an hour.
  • the values for the accumulated amount of energy fed into the public power grid 155 at the supply network connection 150 [second top graph) and the numerical value of the energy buffer [bottom graph) are for example only recorded or determined by the backend 140 at the beginning or at the beginning of each specific time interval 320 . For this reason, the values in the graphs in FIGS. 3 and 4 are only shown at certain times.
  • a positive numerical value 330 des is at the end of the loading process
  • This positive numerical value can be made available to a user or a customer as a credit in a finalization step 504. It is also conceivable that the credit is used for a further (next in the future) charging process.
  • the charging power is therefore not at the same level during the charging process, but increases gradually.
  • Another time span 411 within the buffer step 511 is also present.
  • the charging power is adjusted so that at the end of a specific time interval of a charging process step 512 the numerical value of the energy buffer is positive.
  • the Charging power adjusted so that the numerical value of the energy buffer present at the beginning of the last specific time interval 420 is used within the charging process step 512.
  • the positive numerical value 423 of the energy buffer present at the end of the charging process corresponds to the accumulated am
  • Amount of energy within the time interval 420 The reference symbol 421 visualizes the area mentioned.
  • the sketched time curve 422 of this amount of energy has also been drawn in in the bottom graph of FIG. 4 for reasons of clarity.
  • FIG. 5 shows a charging process in a hybrid operating mode, the charging power being constant.
  • the accumulated amount of energy fed back into the public electricity network 155 at the supply network connection 150 and the numerical value of the energy buffer are recorded or determined by the backend 140 at the end of the entire charging process.
  • FIG. 5 therefore shows all values 611 of the amount of energy fed into the supply network and all values 612 of the numerical value of the energy buffer.
  • the values 611, 612 are not necessarily monitored or tracked by the backend 140 during the charging process.
  • the graph for the charging power shows that there is no buffer step.
  • the zero level 600 is shown in the bottom two graphs in FIG.
  • the numerical value 630 of the energy buffer is negative at the end of the entire charging process. This result leads to the fact that in a finalization step 504 an invoice has to be created for the customer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un système pour faire fonctionner une station de charge (120), comprenant un raccord de station de charge côté réseau, une station de charge (120), un dispositif de commande (122) disposé au niveau de la station de charge (120), caractérisé en ce qu'en fonction d'un signal de commande externe, le dispositif de commande (122) ajuste un flux de puissance entre la station de charge (120) et le raccord de station de charge (121), le signal de commande dépendant d'une valeur de mesure qui est détectée au niveau d'un raccord de réseau d'alimentation (150) côté réseau séparé physiquement du raccord de station de charge (120).
PCT/EP2020/051346 2019-02-20 2020-01-21 Dispositif et procédé pour fournir de l'énergie électrique au niveau d'une station de charge WO2020169290A1 (fr)

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DE102019104241.0A DE102019104241A1 (de) 2019-02-20 2019-02-20 Vorrichtung sowie ein Verfahren zum Bereitstellen elektrischer Energie an einer Ladestation

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DE102012210284A1 (de) 2012-06-19 2013-12-19 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Ladestation eines Elektrofahrzeugs
DE102013108944A1 (de) * 2013-08-19 2015-02-19 HSAG Heidelberger Services AG Verfahren für einen Strombezug eines Elektroautos und Kontrollsystem hierfür

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IT1399055B1 (it) * 2010-03-16 2013-04-05 Beghelli Spa Impianto per il rifornimento di energia di veicoli a trazione elettrica
DE102014213248B4 (de) * 2014-07-08 2024-05-29 Vitesco Technologies GmbH Verfahren und System zum Aufladen eines Energiespeichers eines mobilen Energieverbrauchers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012210284A1 (de) 2012-06-19 2013-12-19 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Ladestation eines Elektrofahrzeugs
DE102013108944A1 (de) * 2013-08-19 2015-02-19 HSAG Heidelberger Services AG Verfahren für einen Strombezug eines Elektroautos und Kontrollsystem hierfür

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