DE102019103799A1 - Charging station and energy supply system for electric vehicles - Google Patents

Abstract

The present invention relates to a charging station (1) for an electric vehicle (2), comprising an interface (3) for connection to a power line, and a charging unit (5). In order to enable electric vehicles to be charged quickly and efficiently with electricity generated preferably from renewable sources, taking into account the current demand and market situation, it is proposed according to the invention that the interface (3) be set up to connect the charging station (1) via a direct power line to be connected to an energy generation unit (7) based on a regenerative energy source, for example wind power. The invention also relates to an energy supply system for electric vehicles (2).

Description

The present invention relates to a charging station for an electric vehicle, comprising at least one interface for connection to a power line, and a charging unit. The present invention also relates to an energy supply system for electric vehicles.

In the past few years, ambitious climate protection targets have been set in Germany as well as in Europe. In order to achieve these climate protection goals, it is essential to reduce emissions of greenhouse gases such as carbon dioxide (CO ₂ ) that are harmful to the climate. This applies, among other things, to the areas of electricity and heat generation based on the incineration of non-renewable raw materials (and therefore not climate-neutral), as well as transport. In the electricity sector, CO ₂ emissions are reduced, for example, through the constant expansion of energy systems based on renewable energies such as wind power, solar energy (photovoltaics), hydropower, bioenergy (e.g. biogas systems) and geothermal energy. While the electricity sector can largely be developed in the direction of CO ₂ neutrality due to the potential of renewable energies available there, this is not possible to the same extent in the areas of heat generation and transport.

In the transport sector, especially in private transport (e.g. cars), local passenger transport (buses, trains etc.) and in agricultural transport (agricultural vehicles), the currently most promising option for CO ₂ reduction is a switch to electromobility, i.e. the replacement or addition of petrol and diesel engines with battery-powered drives. With such a sector coupling, the available potential of renewable energies in the electricity sector is used to reduce the CO ₂ emissions that exist in the transport sector through the electrification of transport. Due to the very ambitious climate protection goals, it can be assumed that both the expansion of renewable energies and the expansion of electric mobility will make significant progress in the next few years.

Electric vehicles are currently being charged, particularly in the private sector, primarily via the connections to the electrical supply network that are already provided in residential buildings. The number of charging stations for electric vehicles is also steadily increasing in the public and semi-public areas. For example, such charging stations are increasingly found in public or company-owned parking lots. Until now, the energy required for charging has usually been provided via the public utility grid.

However, the increasing expansion of electromobility is increasing the demands on the power grids, as users of electric vehicles often visit the charging stations at the same time (i.e. at a certain time of the day, for example in the evening after work) and require the charging stations to provide a relatively high output (this applies in particular to Fast charging programs). Due to the high demand that occurs at the same time, the network load can temporarily increase. The challenges associated with this increase as the number of electric vehicles increases.

Alternatively, electric vehicles can also be charged at existing filling stations with electric charging stations or electric charging stations specially designed for electric vehicles. If these charging stations are not located at a motorway service station, users of electric vehicles usually strive for the fastest possible charging process (approx. 10-20 minutes). Such rapid charging can take place, for example, using ultra-fast charging columns, in which an electric vehicle can be charged to up to 80% of the maximum charge level within a few minutes. However, these fast charging stations have an output of several hundred kW per charging point. Thus, if several electric charging points are used simultaneously at one station, an output of several megawatts may be required. In order to be able to meet these high performance requirements, these ultra-fast charging stations usually have to be connected to a supply network with sufficient voltage (medium voltage or higher). However, these voltage levels are not available, especially in urban areas or at locations of existing petrol stations. In order to take into account the increasing number of electric vehicles in the further development of the existing electricity system, a massive network expansion is necessary, especially at the distribution network level. Appropriate solution concepts for the aforementioned problems are therefore of particular economic and ecological interest.

As already mentioned, charging stations for electric vehicles are basically known from the prior art.

So reveals the DE 10 2008 052 827 A1 a combined electricity and hydrogen filling station for vehicles. However, the electricity and hydrogen filling station can also be designed as a pure electricity filling station. Power levels of over 100 kW can preferably be achieved at the charging stations there. The filling station can obtain electricity from a single or several local systems for the use of renewable energies, e.g. B. one or more wind turbines. However, it seems disadvantageous that the electricity generated there must at least be supplied to the charging station via a local distribution network. Temporary weather fluctuations, which can lead to an excess or lack of regeneratively generated energy, are also not taken into account.

From the WO 2015/103164 A1 a battery-based direct current fast charging system is known in which an electric vehicle is first connected to the charging station and - after the battery has been charged - is charged. Electricity is then delivered to the electric vehicle by the battery system of the charging station. The battery system is charged by a collection system for renewable energy and from the public power grid. With such a system, temporary weather fluctuations could be taken into account due to the interposed battery storage, but the user of the charging system would have no incentive to forego charging in times of actual or available feed-in of regenerative network energy. The device disclosed there can therefore only be assessed as environmentally friendly to a limited extent. Furthermore, the provision of a battery system is associated with additional costs.

The CN 106385098 A relates to a charging station for electric vehicles that is at least partially fed with electricity generated from renewable energies. The charging station comprises a photovoltaic system, a post, a street lamp and a battery pack. The photovoltaic system and the public power grid are connected to the battery pack in order to charge it. The battery pack in turn is connected to the street lamp and the charging station in order to supply the street lamp and the charging station with power. Although the charging station described uses partly regenerative energy, it is at least partly supplied with conventionally produced energy. This is accompanied by the disadvantages explained at the beginning. It should also be noted that such a charging station does not allow rapid charging.

Accordingly, the present invention is based on the object of proposing a charging station for an electric vehicle with which electric vehicles can be charged quickly and efficiently with preferably regeneratively generated electricity, taking into account the current demand and market situation.

At the same time, the invention is based on the object of proposing an energy supply system for electric vehicles with which electric vehicles can be charged quickly and efficiently with preferably regeneratively generated electricity, taking into account the current demand and market situation.

The stated object is achieved both with a charging station having the features of claim 1 and with an energy supply system having the features of claim 8.

The present invention is directed to a charging station for an electric vehicle. This includes at least one interface for connection to a power line and a charging unit. The at least one interface is set up to connect the charging station via a direct power line to an energy generation unit based on a regenerative energy source, for example wind power. The regenerative energy source can also be another energy source, for example solar energy, which is converted into electrical current via a photovoltaic system.

Such a charging station makes it possible to use the electricity generated by an energy generation unit, such as a single wind power plant or a single wind power plant arranged in a wind power park, directly at the place of generation for charging electric vehicles. This also includes the possibility of connecting the charging station to internal cabling of a power generation park, for example a wind park.

Accordingly, the charging station according to the invention is preferably arranged spatially adjacent to the power generation unit, thereby avoiding the costly preparation and installation of a line system. The term “spatially adjacent” can mean a distance of <100 m at this point, but it is not excluded to arrange the charging station at a distance of 100 m to 1 km in relation to the energy generation unit or an energy generation park. A further distance is also conceivable. However, it is essential that a direct power line to the charging station is provided. Electric vehicles can therefore be charged directly from an energy generation unit with electricity generated from renewable sources, so the charging station is supplied with electricity by direct delivery. It is advantageous here that existing power generation units such as wind turbines can also be coupled to the charging station according to the invention. Such a charging station, which is directly connected to an energy generation unit, contributes to the decentralization of electricity generation and use. This is because the concept according to the invention enables charging stations and power generation units to be connected in a decentralized manner to arrange suitable and user-friendly locations. Furthermore, the concept on which the invention is based allows the regeneratively generated electricity to be provided more cheaply than the electricity provided from the electricity network of the public supply. Thus, a potential user of the charging station receives an incentive to charge his electric vehicle with electricity generated from renewable sources, especially in those situations in which the power generation unit is currently generating electricity or sufficient electricity is available due to the weather conditions. Conversely, an incentive is created not to charge the electric vehicles if there is insufficient renewable electricity available.

A direct power line between the power generation unit and the charging station (in particular the interface) is required in order to enable fast charging of an electric vehicle docked to the charging unit of the charging station. In this sense, docking can mean wired charging or wireless charging (for example with inductive charging). The interface can be an AC interface or a DC interface. The charging station can thus be connected directly to a direct current line or an alternating current line. The charging station can also be equipped with both a direct current interface and an alternating current interface. AC lines can, for example, be used to connect individual energy generation units in an energy generation park (e.g. a wind energy park) or as a grid connection to an individual system. Correspondingly, the charging station can be connected to such an internal alternating current network via the alternating current interface. An alternating current direct line to the charging station or alternating current interface of the charging station can also be provided starting from an energy generating unit.

It should be noted that in this case, to ensure short charging times, the alternating current must be converted into direct current, for example in a transformation unit downstream of the alternating current interface, which can be structurally integrated into the charging station. At the same time, such a transformation unit can be arranged outside the charging station, so that the alternating current tapped from an alternating current line is converted into direct current before it is fed to the charging station. In this case, the direct current can be fed directly to the direct current interface provided at the charging station. With such a configuration, an AC interface in the charging station itself is not absolutely necessary. However, it is also conceivable to design both a direct current and an alternating current interface at the charging station. Several of the aforementioned interfaces can also be provided on a charging station. The transformation unit can also be referred to as a power unit and can also include an information and communication unit. If the transformation unit is arranged separately from the charging station, the information and communication unit can also be arranged outside the charging station, for example in a common housing with the transformation unit. In order to receive data from the charging station or to send it out in the direction of the charging station, a suitable transmitting and receiving unit with which a signal exchange is possible must also be provided in the charging station. This can basically be done with a cable or wirelessly. As will be explained later, the information and communication unit can also be integrated into the charging station.

It is also possible to provide several charging units at one and the same charging station. This can be used to simultaneously charge several electric vehicles or other electrical consumers, be it wired or inductive.

The charging station proposed by the present invention is fed with regeneratively generated energy directly via a direct power line from the power generation unit located in the immediate vicinity, be it by way of an AC direct line or a direct current line. If an alternating current direct line is provided, the alternating current is converted into direct current either in an (external) transformation unit upstream of the charging station or in a transformation unit integrated in the charging station. In this way, the energy generated by the energy generation unit is conveyed directly to the consumer, for example the user of an electric vehicle. It is not necessary to use electricity from the public supply network. The power generation unit connected to the respective charging station can be set up to feed electricity into the public supply network in addition to providing electricity for the charging station.

The charging station according to the invention also allows the electricity to be alternatively drawn from the public supply network at times when the regenerative energy generation unit cannot provide sufficient power for fast charging processes, in order to enable the charging process despite local supply bottlenecks. Charging with electricity from the public supply network represents a The fallback position if the electricity generated regeneratively by the energy generation unit is not available in sufficient quantities. Since the power grid of the public supply is based on alternating current, a transformation from alternating current into direct current is also necessary here. The transformation unit integrated in the charging station or an external transformation unit can be used for this. In the former case, an AC interface provided in the charging station can be connected to a power line of the public power grid. In the latter case, a direct current interface provided in the charging station can be connected to a power line provided between the external transformation unit and the charging station.

Further advantageous refinements of the charging station according to the invention are specified in the dependent claims and the further advantageous refinements of the invention listed below.

According to an advantageous embodiment of the invention, the interface can be a direct current interface or an alternating current interface. In the latter case, the alternating current drawn via the alternating current interface must be converted into direct current via a transformation unit provided in the charging station. In the first case, i.e. when the interface is designed as a direct current interface, the drawn direct current is either supplied directly as direct current in the direction of the interface, or alternating current is converted into direct current in a transformation unit provided externally to the charging station and then in the direction of the direct current Interface of the charging station. The charging station can also have an alternating current interface and, in addition, a direct current interface. Both the AC interface and the DC interface can be present in a plurality. It is also possible to provide only one or more alternating current interfaces or direct current interfaces at the charging station. The provision of alternating current interfaces enables the alternative or additional connection of the charging station to alternating current networks, be it to an alternating current-based network of the public supply, to an alternating current network between individual energy generation units (e.g. wind turbines) of an energy generation park or to a supply line that starts from an energy generation unit or an energy generation park runs in the direction of the public supply network. In this case, however, it must be ensured that the alternating current supplied in the direction of the charging station is converted into direct current, for example via an external transformation unit or a transformation unit integrated into the charging station.

Accordingly, it can be advantageous within the scope of the invention to provide a transformation unit integrated into the charging station which is set up to convert alternating current received via the alternating current interface into direct current. At this point, “integration” means, in particular, structural integration. Alternatively, however, the charging station can also interact with a transformation unit arranged outside the charging station. In this case, the supplied alternating current is converted into direct current outside the charging station, which is why no separate alternating current interface is required at the charging station. The direct current can then be received by the charging station via a direct current interface.

According to a further embodiment of the invention, the charging station can have at least one further charging unit for charging an electrical consumer, for example a mobile terminal, a tablet computer or an e-bike. As already mentioned, the further charging unit can also be a wired connection or a wireless charging unit (for example for inductive charging). This enables the user of an electric vehicle to also charge other electronic loads while the electric vehicle is being charged and thus to make efficient use of the charging time. Preferably, several of the further charging units are formed on the charging station, for example in the form of a separate terminal strip.

According to a further advantageous embodiment of the invention, the charging station can have an information and communication unit which is set up to exchange signals and data with an external data processing platform. However, the information and communication unit can also be integrated into an externally provided transformation unit. In the latter case, however, the information and communication unit can still exchange data and / or signals with the charging station, for example via a data or signal line provided specifically for this purpose, which can be wireless or wired.

Via the information and communication unit and the external data processing platform, among other things, data on the current status and the expected output of the energy generation unit can be received and / or transmitted and passed on to potential users and consumers. Such information can also be displayed on a display unit of the charging station. Accordingly, it can be advantageous that the charging station comprises a display unit which is set up to visually display display information provided by the information and communication unit. The status and the expected output of an energy generation unit can for example be transmitted to the external data processing platform or directly to the charging station by a communication module provided specifically in the respective energy generation unit. This information can also initially be transmitted from the energy generation unit in the direction of the information and communication unit and then forwarded by the latter to the external data processing platform.

A consumer or potential customer can for his part request this information (or information based on it or processed information) via a suitable terminal, for example a mobile terminal such as a smartphone, either from the charging station or the external data processing platform. Suitable application software (app) can also be provided on the end device of the consumer, which automatically or on command requests corresponding data.

Such information transfer is indispensable for the provision of an environmentally and customer-friendly energy management in the field of energy supply for electric vehicles. Because energy generation units based on renewable energies are subject to the natural fluctuations of various environmental factors, and the energy supply is also subject to these natural fluctuations. Meteorological conditions such as wind speeds, solar radiation or the flow of rivers influence the energy supply based on these natural forces. Thus, it cannot be consistently ensured that an energy generation unit operated on the basis of renewable energies can continuously provide the power required for fast charging processes at the charging station according to the invention without additionally using the electricity network of the public supply.

The data and information mentioned are preferably provided and processed on the external data processing platform. The data processing platform can obtain data from individual energy generation units, energy generation parks, weather databases, meteorological stations, price databases, etc. The data processing platform processes all necessary information from the energy generation units or energy generation parks, such as Live data on the currently available power and the data on power forecasts for the next few hours. In addition, the current prices for the charging stations can be determined and shown. Relevant information can also be determined and indicated whether the electricity tapped at a charging station is generated on the basis of regenerative energy or is provided from the public supply network. Potential consumers or customers of the charging station can then see where the closest, cheapest and most environmentally friendly charging option is. The potential consumer or customer can also receive an assessment of the expected duration and price of the charging process. In addition, the consumer or customer can be informed whether the charging station is currently available or at a future point in time.

Information on the currently available power of the energy generation unit can be transmitted both directly to the information and communication unit and / or to the external data processing platform. Furthermore, information regarding upcoming generation failures (e.g. due to planned maintenance work) can also be transmitted in this way.

To determine and set a currently valid price for the charging process, real-time and forecast information from the alternative marketing of regeneratively generated electricity on electricity markets (e.g. regional and supraregional electricity markets, balancing energy market) is used. The electricity marketed there flows through the public utility grid. In this way, the respective price for the charging process at the charging station can be based on the respective costs or the value of the electricity generated through marketing on the electricity markets. In situations in which, for example, the electricity generated and marketed regeneratively by the energy generation unit has only a low or even a negative value on the electricity markets, it can be sensible and economical to offer the electricity for the charging station directly connected to the energy generation unit at a comparatively cheap rate in order to thus increasing the demand. Conversely, in situations in which the electricity marketed on the electricity market has a high price, it makes sense to offer the charging electricity at a comparatively high price. In the event that not enough electricity is available from the on-site power generation unit, the prices for electricity purchase from the public supply network can also be taken into account and processed. These calculations are preferably carried out on the external data processing platform. This is preferably done automatically.

Furthermore, it can be advantageous within the scope of the invention that the at least one interface, the charging units, and the information and communication unit are combined in a common module. This reduces the effort involved in replacing individual components in the event of damage or repairs.

1. a) eine externe Datenverarbeitungsplattform;
2. b) eine auf einer regenerativen Energiequelle, beispielsweise Windkraft, basierende Energieerzeugungseinheit, die dazu eingerichtet ist, Signale und Daten mit der externen Datenverarbeitungsplattform auszutauschen;
3. c) eine Ladestation für ein Elektrofahrzeug, aufweisend:
   1. i. eine Schnittstelle, die über eine Direkt-Stromleitung mit der Energieerzeugungseinheit verbunden ist;
   2. ii. eine Ladeeinheit zum Laden des Elektrofahrzeugs und
4. d) eine Informations- und Kommunikationseinheit, die dazu eingerichtet ist, Signale und Daten mit der externen Datenverarbeitungsplattform auszuta uschen.

The invention also relates to an energy supply system for electric vehicles. This includes

1. a) an external data processing platform;
2. b) an energy generation unit based on a regenerative energy source, for example wind power, which is set up to exchange signals and data with the external data processing platform;
3. c) a charging station for an electric vehicle, comprising:
   1. i. an interface connected to the power generation unit via a direct power line;
   2. ii. a charging unit for charging the electric vehicle and
4. d) an information and communication unit which is set up to exchange signals and data with the external data processing platform.

The advantageous configurations of the individual components already presented above also apply to the energy supply system also claimed with the invention. Correspondingly, reference is made to the preceding explanations for the explanations relating to the preferred design options relating to the external data processing platform, the energy generation unit and the charging station.

With the aforementioned energy supply system, on the one hand, energy in the form of electricity can be generated in a regenerative way and used to charge electric vehicles, and on the other hand, the energy supply system according to the invention enables a user of an electric vehicle to query information on the availability and price of that provided by the charging station or the energy generation unit Current. For this purpose, the data processing platform can have an interface via which related information can be transmitted wirelessly, for example in the direction of external data centers or servers, directly to mobile or stationary end devices of end users via the Internet, e-mail or via suitable application programs or software. For details in this regard, reference is also made to the preceding statements.

Consequently, the external data processing platform can be set up to output a charging recommendation to a customer's terminal, for example a driver of an electric vehicle, taking into account current and / or predictive weather data and market data on electricity demand or the electricity price. The charging recommendation or further information can be transmitted to the customer via the customer's end devices or via a display unit provided at the respective charging station.

According to an advantageous embodiment of the invention, the energy supply system can have a plurality of energy generation units, wherein the energy generation units are preferably connected to each other via AC lines and connected to a public supply network, and at least one energy generation unit is connected to a charging station via a direct power line.

• 1 eine schematische Übersichtsdarstellung der Ladestation bzw. des Energiebereitstellungssystems sowie deren Interaktion mit weiteren Komponenten;
• 2 eine schematische Übersichtsdarstellung der externen Datenverarbeitungsplattform samt deren Interaktion mit weiteren Komponenten und;
• 3 eine schematische Übersichtsdarstellung bezüglich möglicher Anbindungen der Ladestation an eine Energieerzeugungseinheit bzw. das Stromnetz der öffentlichen Versorgung.

Further design options of the present invention are explained in more detail below with reference to overview representations. So shows

• 1 a schematic overview of the charging station or the energy supply system and their interaction with other components;
• 2 a schematic overview of the external data processing platform including its interaction with other components and;
• 3 a schematic overview of possible connections of the charging station to a power generation unit or the power grid of the public supply.

The 1 shows a schematic overview of the energy supply system according to the invention including the associated charging station 1 for electric vehicles 2 . With electric vehicles 2 can mean passenger cars, commercial vehicles such as trucks or agricultural vehicles. Public transport vehicles such as buses can also be considered electric vehicles 2 be viewed in the sense of the invention. The energy supply system described here is, on the one hand, used for charging an electric vehicle 2 The energy required is provided in the form of electricity (generated from renewable sources if possible); 2 be charged directly, namely via a charging station belonging to the energy supply system 1 . It should be noted that the energy supply system according to the invention also a plurality of charging stations 1 can be assigned.

Like in the 1 As shown, the energy supply system comprises at least one energy generation unit 7th . As indicated by way of illustration, this can be, for example, a wind power plant or a solar or photovoltaic plant. The power generation unit 7th can comprise a single wind turbine, ie a single wind turbine or a single solar or photovoltaic installation, but a plurality of wind turbines or solar or photovoltaic installations can also be combined to form an energy generation park. In such a case (see for example the illustration after 3 ) are the individual energy generation units 7th networked with one another, primarily via alternating current lines 15th . In principle, the energy generation units provided in such an energy generation park feed 7th the generated electricity into a power grid 10 public supply. This can be done, for example, via a transfer station 23 take place, which can be followed by a distribution station.

Like in the 1 illustrated schematically, supplies the power generation unit 7th (for example a wind turbine) the charging station 1 directly with electricity. This is the charging station 1 with a corresponding interface 3 fitted. In principle, this can be a direct current interface or an alternating current interface. The electricity can start from the power generation unit 7th via a direct power line from the charging station 1 are fed. If the current transmitted via such a direct power line is alternating current, this is either before entering the charging station via one outside the charging station 1 provided transformation unit converted into direct current and an interface designed as a direct current interface 3 the charging station 1 fed. The alternating current can also be an interface designed as an alternating current interface 3 the charging station 1 are supplied immediately. The AC interface is then followed by a transformation unit for converting into DC. In the latter case, the transformation unit can be integrated into the charging station. In principle, however, it is also possible to start from an energy generation unit 7th direct current in the direction of the charging station 1 transferred to. In this case, the power is transmitted via a direct current interface.

In addition to the direct delivery of electricity to those with the power generation unit 7th connected charging station 1 , feeds the power generation unit 7th Electricity in the power grid 10 public supply. The electricity of the public grid 10 is used by end consumers and companies for a wide variety of purposes, for example for the operation of electronic devices, the indoor and outdoor lighting of buildings and streets and the operation of machines and industrial plants. Also can loaders 16 for electric vehicles 2 Electricity from the grid 10 the public supply. However, as explained at the beginning, this is not necessarily sustainable with regard to a climate-neutral energy supply, because, as is well known, a considerable proportion of the energy is generated via the public power grid 10 obtained energy from non-regenerative energies (e.g. by burning fossil fuels).

Accordingly, the invention provides that a charging station 1 via a direct power line (usually via an alternating current line with external to the charging station 1 provided transformation unit) with an energy generation unit 7th connected with which electricity is generated on the basis of renewable energies. Via one or more at the charging station 1 intended loading units 5 can electric vehicles 2 Loading. The loading units 5 can be wired or wireless. Wireless charging can be based on an inductive charging process. Furthermore, the charging station 1 further loading units 6th for other electrical consumers 11 exhibit. Thus, the charging station 1 for the purpose of charging his electric vehicle with electricity 2 The customer using the device can simultaneously charge other electronic devices, such as a smartphone, during the charging process, which takes at least a few minutes.

In addition, other consumers such as e-bikes can also use the charging station 1 use.

Another part of the charging station 1 is an information and communication unit 12 that have a wireless data and signal connection for the charging station 1 with an external data processing platform 13th allowed. In principle, the information and communication unit 12 also outside the charging station 1 be provided, for example the information and communication unit 12 be integrated into an external transformation unit (not shown).

The data and signal connection between the information and communication unit 12 and the external data processing platform 13th takes place over the Internet 19th . This can be done in the information and communication unit 12 a corresponding transmitting and receiving unit can be integrated, the same also applies to the external data processing platform 13th . Furthermore, the information and communication unit 12 with the power generation units 7th be networked in terms of signaling and data, so that current information on energy and Electricity production from the power generation unit 7th in the direction of the information and communication unit 12 can be transmitted. The information and communication unit 12 in turn, the information collected can be directed towards the external data processing platform 13th pass on. The data processing platform 13th assigns an interface 18th on, via which information can be accessed digitally by a consumer, which is preferably done on the Internet. To this end, a consumer can use a suitable, internet-enabled terminal 17th and a corresponding software, app, or information service, the desired information from the external data processing platform 13th Respectively. On the external data processing platform 13th can provide information related to a variety of power generation units 7th or various energy parks, information on the electricity price market and weather information converge and be evaluated. Via the end devices 17th can users of an electric vehicle 2 for example, call up whether or at which charging station 1 the electric vehicle 2 can be charged on the basis of electricity generated from renewable sources. Information regarding a possible electricity price, the possible duration of the charging process and the availability of a charging station 1 can be accessed.

In situations where the weather conditions on the part of the power generation unit 7th insufficient electricity production to guarantee a charging process at the charging station 1 Allow the required power, it can be provided that the charging station 1 Electricity from the mains 10 the public supply relates. The charging station 1 have a correspondingly designed interface, for example a separate interface 4th . At the interface 4th it can be an AC interface or a DC interface. In the case of an alternating current interface, this can be followed by a transformation unit. In the case of training as a direct current interface, it must come from the public power grid 10 AC current drawn before entering the charging station 1 can be converted into direct current via an external transformation unit.

In the 2 is a schematic overview of the interaction of the external data processing platform 13th reproduced again with the other components of the energy supply system. On the external data processing platform 13th can provide current data (e.g. live data such as the performance of the power generation unit 7th ) the energy generation units involved in the energy supply system 7th are processed. These data can either be via the power generation units 7th directly to the external data processing platform 13th be transmitted or via each with the energy generation units 7th networked charging stations 1 . In the latter case, the data is transmitted via the information and communication unit 12 of the charging stations 1 . However, the information and communication unit 12 also external to the charging station 1 be arranged, for example within an external transformation unit. The external data processing platform 13th Data from other external data sources 20th Respectively. This can be, for example, weather data, market data relating to the electricity price, etc.

Overall, they include the data processing platform 13th transmitted data that is information on the current level of performance of the energy generation units involved in the energy supply system 7th as well as the current marketing costs and revenues on the electricity markets. In addition, on the data processing platform 13th Regular forecast data for the expected development of the performance and the availability of the charging stations 1 processed. About the attractiveness of using the charging stations (which provide electricity from renewable sources) 1 to increase, further information such as the locations and prices of alternative charging stations can be processed and shown. The processed data and information are transmitted via an interface 18th to the respective users or consumers or their devices 17th in the form of apps, software solutions or directly to the end devices (e.g. via e-mail or SMS). It is also possible to transfer the data to external service providers.

As mentioned earlier, the 3 a schematic overview of possible connections to a charging station associated with the energy supply system according to the invention 1 to a power generation unit 7th (or one of a plurality of power generation units 7th existing power generation park) as well as to the power grid 10 the public supply. As already mentioned at the beginning, the charging station according to the invention is 1 Via a direct power line (this can be a direct current line 21st but usually an AC line 22nd ) with a power generation unit 7th connected. Often are power generation units 7th like wind turbines, however, to a network of a large number of energy generation units 7th summarized. In terms of line technology, the individual power generation units are 7th via AC power lines 15th networked with each other. As a rule, such energy generation units arranged in an energy generation park also feed electricity into the power grid 10 public supply. As a rule, however, this does not take place via individual units with the respective energy generation units 7th connected Individual connections, but together. The one from the power generation units 7th The electricity generated is then bundled via a transfer station 23 delivered to the public power grid. Like in the 3 can also be seen, the charging station, in addition to the direct connection to an individual energy generation unit 7th (via the direct power line) also be connected to the local alternating current network of the power generation park, for example via an alternating current line 22nd .

List of reference symbols

1

Charging station

2

Electric vehicle

3

interface

4th

interface

5

Loading unit

6th

further loading unit

7th

Power generation unit

10

Public utility power grid

11

electrical consumer

12

Information and communication unit

13

external data processing platform

15th

AC line

16

Loading device

17th

Terminals

18th

interface

19th

Internet

20th

external data sources

21st

DC line

22nd

AC line

23

Transfer station

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102008052827 A1 [0008]
• WO 2015/103164 A1 [0009]
• CN 106385098 A [0010]

Claims (10)

Charging station (1) for an electric vehicle (2), comprising at least one interface (3) for connection to a power line, and a charging unit (5), characterized in that the at least one interface (3) is set up to connect the charging station (1 ) to connect via a direct power line to an energy generation unit (7) based on a regenerative energy source, for example wind power. Charging station (1) Claim 1 , characterized in that the interface (3) is a direct current interface or an alternating current interface. Charging station (1) Claim 2 , characterized by a transformation unit integrated in the charging station (1) which is set up to convert the alternating current received via the alternating current interface into direct current. Charging station (1) Claim 1 , characterized in that the charging station (1) has at least one further charging unit (6) for charging an electrical consumer (11), for example a mobile terminal, a tablet computer or an e-bike. Charging station (1) Claim 1 , characterized in that the charging station (1) has an information and communication unit (12) which is set up to exchange signals and data with an external data processing platform (13). Charging station (1) Claim 5 characterized in that the charging station (1) comprises a display unit which is set up to visually display display information provided by the information and communication unit (12). Charging station according to one of the preceding claims, characterized in that the at least one interface (3), the charging units (5, 6) and the information and communication unit (12) are combined in a common module. An energy supply system for electric vehicles (2), comprising a) an external data processing platform (13); b) an energy generation unit (7) based on a regenerative energy source, for example wind power, which is set up to exchange signals and data with the external data processing platform (13); c) a charging station (1) for an electric vehicle (2), comprising: i. an interface (3) which is connected to the power generation unit (7) via a direct power line; ii. a charging unit (5) for charging the electric vehicle (2) and d) an information and communication unit (12) which is set up to exchange signals and data with the external data processing platform (13). Energy supply system according to Claim 8 , characterized in that the external data processing platform (13) is set up, taking into account current and / or predictive weather data and market data on electricity demand or electricity price, a charging recommendation to a terminal (17) of a customer, for example a driver of an electric vehicle (2 ) to output. Energy supply system according to Claim 8 , characterized in that the energy supply system has a plurality of energy generation units (7), wherein the energy generation units (7) are preferably connected to one another via AC lines (15) and connected to a public supply network (10), and at least one energy generation unit (7) via a direct power line is connected to a charging station (1).

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