Charging station and method for operating a charging station

Abstract

The invention relates to a charging station (1) for charging and / or discharging an energy store (2) of an electric vehicle (3) with electrical energy by means of a single-phase or multiphase grid which can be coupled to the charging station (1). The charging station (1) has a housing (8) comprising an inner space (9), in which a plurality of electrical and / or electronic components (200-700), a cooling device (10) for cooling the inner space (9) and a control unit (11) for controlling the cooling device (10) are located. The control unit (11) is designed to control the cooling device (10) for cooling the inner space (9) depending on a model (M) for modelling a temperature development of the inner space (9) of the charging station (1).

Description

[0001] CHARGING STATION AND METHOD FOR OPERATING A

[0002] CHARGING STATION

[0003] TECHNICAL FIELD

[0004] The invention relates to a charging station for charging and / or discharging an energy storage device of an electric vehicle with electrical energy using a single-phase or multi-phase network that can be coupled to the charging station. Furthermore, the invention relates to a system having a plurality of such charging stations. Furthermore, the invention relates to a method and a computer program product for operating such a charging station.

[0005] STATE OF THE ART

[0006] The present technical field relates to charging an energy storage device of an electric vehicle. For example, the applicant's European patent EP 2 882 607 B1 describes a charging station for electric vehicles, comprising at least one input interface for feeding electrical energy from a stationary power supply network into the charging station, a connection socket for connecting a charging plug of an electric vehicle for the controlled delivery of electrical energy to the electric vehicle, a plurality of electrical components comprising an electronic control device for switching, measuring, or monitoring the absorbed and / or delivered electrical energy, and a housing enclosing the electrical components.

[0007] Different charging methods are known for electric vehicles. There are rapid charging methods, in which the charging station provides the electric vehicle with direct current (DC), and alternating current charging methods, in which the electric vehicle is supplied with single-phase or multi-phase, particularly two-phase or three-phase, alternating current (AC). The charging vehicle converts this current into direct current for the energy storage device using a built-in AC / DC converter. With alternating current charging methods, the charging process is controlled by the charging logic of the vehicle or the energy storage device.

[0008] Other conventional charging stations are not included in the documents

[0009] EP 3 664 244 Al, EP 3 729 593 Al, DE 11 2013 007 137 T5, EP 2 465 176 Bl, DE 10 2016 212 135 Al, DE 10 2017 100 138 Al, WO 2020 / 167132 Al and DE 10 2009 060 364 Al known.

[0010] During operation of a charging station, such as a DO charging station, the installed electrical and / or electronic components generate a significant amount of waste heat. However, any temperature deviation within a defined range reduces the service life of the respective component.

[0011] To cool the components installed in the interior, a charging station can have a cooling unit that is activated when temperature sensors detect that a defined temperature limit has been exceeded. However, by the time the temperature reaches the temperature sensor, the source of the temperature increase, for example, a specific electrical component, is already significantly warmer. By the time the activated cooling begins to take effect and the excess heat is dissipated from the particularly heated zones, especially in the area of ​​the source, some damage may already have occurred. As the charging station's service life progresses, this damage, in turn, adversely leads to a reduction in the service life of the charging station.

[0012] DISCLOSURE OF THE INVENTION

[0013] It is an object of the present invention to provide an improved charging station for charging and / or discharging an energy storage device of an electric vehicle. This object is achieved by a charging station having the features of claim 1, by a system having the features of claim 12, by a method having the features of claim 13, and by a computer program product having the features of claim 14.

[0014] According to a first aspect, a charging station for charging and / or discharging an energy storage device of an electric vehicle with electrical energy by means of a single-phase or multi-phase network that can be coupled to the charging station is proposed. The charging station comprises a housing comprising an interior in which a plurality of electrical and / or electronic components, a cooling device for cooling the interior, and a control unit for controlling the cooling device are arranged. The control unit is configured to control the cooling device for cooling the interior depending on a model for modeling a temperature development of the interior of the charging station.

[0015] By using this model, which models the temperature development inside the charging station when charging and / or discharging the energy storage device, the interior of the housing and thus the components installed therein can be pre-tempered in such a way that the service life of the installed components is extended. The longer service life of individual components of the charging station also results in a longer service life for the entire charging station system. Furthermore, the installed electrical and / or electronic components can preferably be dimensioned smaller in some cases. The optimized use of the cooling device using this model also reduces the operating costs of the charging station. The use of this model can also reduce the noise generated during cooling and / or operation of the charging station.

[0016] In particular, the cooling device can be manufactured using the present

[0017] The model can be activated before a defined temperature threshold is actually measured inside the case. By the time the measured temperature actually reaches the temperature sensor, the source of heat generation is already considerably warmer, especially at high loads. Activating the cooling device only then to begin cooling could cause some component damage, especially over time. This is advantageously prevented by the present measures.

[0018] The charging station can also be referred to as a charging connection device. The charging station is designed, in particular, as a wallbox. The charging station is suitable for charging or regenerating the energy storage unit of an electric vehicle by electrically connecting the charging station to the energy storage unit or charging electronics of the electric vehicle via its connection socket and the charging plug of the electric vehicle. The charging station acts as a source of electrical energy for the electric vehicle, whereby the electrical energy can be transferred to an energy storage unit of the electric vehicle via the connection socket and charging plug. The charging station can also be referred to as an intelligent charging station for electric vehicles.

[0019] The housing is, in particular, a waterproof housing. Examples of the electrical and / or electronic components of the charging station arranged in the interior of the housing include a contactor, an AC / DC converter, a DC / DC converter, a universal current-sensitive circuit breaker, a DC, overcurrent, and residual current monitoring device, a relay, a connection terminal, electronic circuits, and a control device, for example, comprising a printed circuit board on which a plurality of electronic components for controlling and / or measuring and / or monitoring the energy states at the charging station or in the connected electric vehicle are arranged. The control unit for controlling the cooling device is preferably part of the control device.

[0020] The AC / DC converter can also be referred to as an inverter. The AC / DC converter is designed, in particular, to convert an alternating voltage into a direct voltage and / or to convert a direct voltage into an alternating voltage. The charging station comprises, in particular, an intermediate circuit connected downstream of the inverter, with a number of intermediate circuit capacitors connected to a center point of the intermediate circuit.

[0021] For example, a single-phase or multi-phase network is a multi-phase subscriber network. A single-phase or multi-phase network can also be a multi-phase power supply network. A multi-phase network has a number of phases, such as L1, L2, and L3, as well as a neutral conductor (also designated N).

[0022] It should be noted that "charging and / or discharging an energy storage device" includes both the supply and withdrawal of electrical energy. This means that the energy storage device can act as a consumer or a generator in the subscriber grid.

[0023] According to one embodiment, the charging station comprises a memory unit for storing the model for modeling the temperature development of the interior of the charging station. The memory unit can, for example, comprise a RAM memory, a ROM memory, and / or an EEPROM memory.

[0024] According to a further embodiment, the control unit is configured to proactively control the cooling device for cooling the interior space by means of the model depending on the model for modeling the temperature development of the interior space of the charging station.

[0025] By proactively controlling the cooling device, the interior of the housing is pre-heated at an early stage, thus optimizing the service life of the components installed there. In this context, "proactive" means, in particular, before a certain limit temperature of an installed component is exceeded. According to a further embodiment, the charging station comprises a number of temperature sensors for each providing a temperature value indicative of a temperature in the interior. The control unit is configured to control the cooling device for cooling the interior depending on the model and at least one provided temperature value.

[0026] By using current temperatures, measured in particular at various locations in the interior of the housing, and the present model, the pre-temperature control in the interior of the charging station is optimized.

[0027] According to a further embodiment, the control unit is configured to change the model stored in the memory unit depending on a plurality of temperature values ​​provided by the number of temperature sensors.

[0028] According to this embodiment, the control unit is capable of modifying the stored model or adapting it over time. This can, in particular, also be referred to as a dynamically adaptable model for modeling the temperature development of the interior of the charging station.

[0029] According to a further embodiment, the number of temperature sensors comprises a first number of temperature sensors arranged in the interior of the housing and / or a second number of temperature sensors attached to the outside of the housing. In this embodiment, not only temperatures inside the housing and temperatures outside the housing, but also temperature gradients between inside and outside can be taken into account, so that the pre-temperature control in the interior is further optimized for the installed components. According to a further embodiment, the model for modeling the temperature development of the interior of the charging station models a heat development of at least a subset of the electrical and / or electronic components of the charging station using current curves of the electrical currents of the components during charging and / or discharging.

[0030] In this embodiment, the model specifically considers the current curves of the components' electrical currents during charging and / or discharging through the charging station. The corresponding heat development of the corresponding component can be derived from the respective current curves, thus further optimizing the model.

[0031] According to a further embodiment, the model for modeling the temperature development of the interior of the charging station models a heat development of at least a subset of the electrical and / or electronic components of the charging station using current curves of the electrical currents of the components during charging and / or discharging and using a charging time or discharging time derived from communication with the electric vehicle.

[0032] In this embodiment, the model not only considers the current curves of the components' electrical currents during charging and / or discharging, but also the current charging or discharging time, derived from communication with the electric vehicle. Through the implementation of ISO 15118, the charging station knows the upcoming charging or discharging time based on communication with the electric vehicle. This, and the help of additional temperature sensors, particularly for the outside temperature, can also determine how much the components inside the charging station are heating up. To counteract this heating, the cooling device can be activated early on to cool the interior, especially before the components actually heat up.According to a further embodiment, the cooling device comprises a liquid coolant and a cooling medium pump for circulating the liquid coolant. For example, the entire interior of the charging station is filled with the liquid coolant, and circulation is achieved by a circulation pump.

[0033] According to a further embodiment, the cooling device comprises a fan and a plurality of openings in the housing.

[0034] According to a further embodiment, the cooling device comprises a cooling unit having a specific coolant. The coolant is, in particular, gaseous or liquid and suitable for dissipating heat.

[0035] According to a further embodiment, the cooling device comprises a fan, a plurality of openings in the housing and a cooling unit having a specific coolant.

[0036] The control unit can be implemented in hardware and / or software. In a hardware implementation, the control unit can be embodied as a device or as part of a device, for example, as a computer, a microprocessor, or a control device. In a software implementation, the control unit can be embodied as a computer program product, as a function, as a routine, as part of a program code, or as an executable object.

[0037] According to a further embodiment, the charging station is a transformerless charging station.

[0038] According to a further embodiment, an EMC filter device and an LCL filter device connected downstream of the EMC filter device are coupled between three mains-side connection terminals for the three phases of the multi-phase network and the AC / DC converter.

[0039] According to a further embodiment, the charging station comprises a connection socket with a number of coupling points for connecting a charging cable. The charging cable connects, in particular, the electric vehicle or the electric vehicle's energy storage device to the connection socket and is configured to transmit the charging current.

[0040] The connection socket can have additional coupling points, for example, to connect a protective conductor and / or one or more signal or data transmission conductors. The connection socket can be designed to be compatible with different specifications; in particular, the connection socket can be backward compatible, meaning that it can be coupled, for example, to a charging cable for single-phase, two-phase, or even three-phase charging. In embodiments, the charging station can have multiple connection sockets for differently designed charging cables.

[0041] According to a further embodiment, the charging station comprises a communication module configured to communicate with the electric vehicle using high-level communication, in particular according to the ISO 15118 standard or a comparable communication method. The communication module is preferably configured to negotiate a charging plan with the charging electronics of the electric vehicle coupled to the charging station.

[0042] Negotiation occurs, for example, as described in ISO 15118. For example, the charging electronics of the energy storage device requests a specific charging power from the charging station via the communication module, and the charging station, for example a control device of the charging station, determines whether the requested charging power can be provided. In particular, the current status of the subscriber network and / or the energy supply network is taken into account. If the requested charging power cannot be provided, the charging station can make a "counter-proposal" via the communication module, which can be accepted by the charging electronics of the energy storage device, or the charging electronics can submit its own request again. In this way, the charging station and the charging electronics communicate until the charging plan is negotiated. Negotiating the charging plan can be part of the pairing process when an energy storage device is newly connected to the charging station.

[0043] According to a further embodiment, the charging station comprises a power switching device for safely disconnecting the number of output conductors from the multi-phase subscriber network. The power switching device can be designed as an electromechanical element, such as a contactor or a four-phase relay. The power switching device can be individually designed and controllable for a respective phase of the multi-phase subscriber network and / or for a respective output conductor of the switching matrix, so that, for example, individual assignments can be interrupted using the power switching device.

[0044] According to a second aspect, a system with a plurality N of charging stations is proposed (with N > 2), wherein the respective charging station is designed according to the first aspect or one of the embodiments of the first aspect.

[0045] According to a further development, the N charging stations are connected by means of a star connection to a single circuit breaker, which is coupled to the grid connection point.

[0046] According to a third aspect, a method for operating a charging station for charging and / or discharging an energy storage device of an electric vehicle with electrical energy by means of a single-phase or multi-phase network that can be coupled to the charging station is proposed. The charging station comprises a housing with an interior in which a plurality of electrical and / or electronic components, a cooling device for cooling the interior, and a control unit for controlling the cooling device are arranged. In the method, the cooling device for cooling the interior is controlled depending on a model for modeling a temperature development of the interior of the charging station.

[0047] This method has the same advantages as those explained for the charging station according to the first aspect. The embodiments described for the proposed charging station apply accordingly to the proposed method. Furthermore, the definitions and explanations for the charging station also apply accordingly to the proposed method.

[0048] "One" in this case is not necessarily limited to a single element. Rather, multiple elements, such as two, three, or more, may also be included. Any other counting term used here should not be understood as implying a limitation to the exact number of elements stated. Rather, numerical deviations upwards and downwards are possible, unless otherwise stated.

[0049] Further possible implementations of the invention also include combinations of features or embodiments described above or below with respect to the exemplary embodiments not explicitly mentioned. In this case, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the invention.

[0050] Further advantageous refinements and aspects of the invention are the subject of the dependent claims and the exemplary embodiments of the invention described below. The invention will be explained in more detail below using preferred embodiments with reference to the accompanying figures. Fig. 1 schematically shows an arrangement with a first embodiment of a charging station and an electric vehicle.

[0051] Fig. 2 shows a schematic circuit diagram of a second embodiment of a charging station for charging and / or discharging an energy storage device of an electric vehicle!

[0052] Fig. 3 shows a schematic circuit diagram of a third embodiment of a charging station for charging and / or discharging an energy storage device of an electric vehicle!

[0053] Fig. 4 shows a schematic circuit diagram of a fourth embodiment of a charging station for charging and / or discharging an energy storage device of an electric vehicle! and

[0054] Fig. 5 shows a schematic flow diagram of a method for operating a charging station for charging and / or discharging an energy storage device of an electric vehicle.

[0055] In the figures, identical or functionally equivalent elements have been given the same reference numerals unless otherwise stated.

[0056] Fig. 1 shows schematically an arrangement with a first embodiment of a charging station 1 and an electrical energy storage device 2 of an electric vehicle 3. The charging station 1 can be designed as an AO charging station or as a DO charging station.

[0057] In the example of Fig. 1, a multi-phase subscriber network 4 is connected to a multi-phase power supply network 7 via a network connection point 6. The multi-phase subscriber network 4 has, in particular, a number of phases, for example, L1, L2, and L3, as well as a neutral conductor. In this example, without limiting the generality, these are three-phase power networks. The electric vehicle 2 is coupled to the charging station 1 via a charging cable 5, which is connected to a connection socket (not shown) of the charging station 1.

[0058] The charging station 1 may comprise a number of electrical and / or electronic components (not shown in Fig. 1, see for example in Fig. 2) and is configured to charge and / or discharge the energy storage device 2 of the electric vehicle 3 with electrical energy by means of the multi-phase subscriber network 4 coupled to the charging station 1.

[0059] Furthermore, the charging station 1 preferably comprises a communication module (not shown). The communication module is configured to communicate with the electric vehicle 3 according to high-level communication, in particular according to the ISO 15118 standard. The communication module is preferably configured to negotiate a charging plan with the charging electronics of the electric vehicle 3 coupled to the charging station 1.

[0060] Negotiation occurs, for example, as described in ISO 15118. For example, the charging electronics of energy storage device 2 requests a specific charging power from charging station 1 via the communication module, and charging station 1 determines whether the requested charging power can be provided. In particular, the current status of subscriber network 4 and / or energy supply network 7 is taken into account. If the requested charging power cannot be provided, charging station 1 can make a "counter-proposal" via the communication module, which can be accepted by the charging electronics of energy storage device 2, or the charging electronics can make its own request again. In this way, charging station 1 and the charging electronics of energy storage device 2 communicate until the charging plan is negotiated. Negotiating the charging plan can be part of the coupling process when an energy storage device 2 is newly connected to charging station 1. Fig.Fig. 2 shows a schematic circuit diagram of a second embodiment of a charging station 1 for charging and / or discharging an energy storage device 2 of an electric vehicle 3. The second embodiment of Fig. 2 includes all features of the first embodiment according to Fig. 1.

[0061] The charging station 1 of Fig. 2 has three connection terminals 101, 102, 103 for the three phases LI, L2, L3 of the multi-phase network 4. In particular, the charging station 1 also has another connection terminal (not shown) for the neutral conductor.

[0062] The charging station 1 of Fig. 2 further comprises a housing 8 having an interior space 9 in which a plurality of electrical and / or electronic components 200 - 700, a cooling device 10 for cooling the interior space 9 and a control unit 11 for controlling the cooling device 10 are arranged.

[0063] One of the electrical and / or electronic components 200-700 is an EMC filter device 200, which is connected downstream of the connection terminals 101, 102, 103. Furthermore, the electrical and / or electronic components 200-700 of Fig. 2 include an LCL filter device 300 connected downstream of the EMC filter device 200, an AC / DC converter 400, an intermediate circuit 500, a DC / DC converter 600, and an output intermediate circuit 700, to which a negative output potential tap 701 and a positive output potential tap 702 are connected.

[0064] In particular, an EMC filter device (not shown) may be connected between the negative output potential tap 701 and the positive output potential tap 702.

[0065] The cooling device 10 of Fig. 2 comprises, for example, a fan 13 and a plurality of openings 14 in the housing 8. In particular, a plurality of openings 14 are arranged on opposite sides of the housing 8, and the fan 13 is arranged between these openings 14 so that a suitable air flow for cooling can develop. The control unit 11 is configured to control the cooling device 10 for cooling the interior 9 by means of a control signal S depending on a model M for modeling a temperature development of the interior 9 of the charging station 1. For this purpose, the charging station 1 of Fig. 2 comprises a storage unit 12 which is configured to store the model M for modeling the temperature development of the interior 9. In particular, the control unit 11 is configured to proactively control the cooling device 10 for cooling the interior 9 depending on the model M using the model M.

[0066] To model the temperature development of the interior 9 of the charging station 1, the model M preferably models a heat development of at least a subset of the electrical and / or electronic components 200 ■ 700 of the charging station 1. In particular, the current curves of the electrical currents of the components 200 - 700 during charging and / or discharging are used here. The model M preferably uses the current curves of the electrical currents of the components 200 - 700 during charging and / or discharging and additionally a charging time or discharging time derived from communication with the electric vehicle 3.

[0067] Fig. 3 shows a schematic circuit diagram of a third embodiment of a charging station 1. The third embodiment of Fig. 3 comprises all the features of the second embodiment according to Fig. 2 and additionally a number of temperature sensors 15 for each providing a temperature value T indicative of a temperature in the interior 9. Without restricting the generality, Fig. 3 shows one temperature sensor 15. Of course, a plurality of temperature sensors 15 can be arranged in the interior 9 of the housing 8 at a plurality of locations in the interior 9, wherein the respective temperature sensor 15 each provides a different temperature value T. The control unit 11 is designed to control the cooling device 10 for cooling the interior 9 depending on the model M and the at least one provided temperature value T.

[0068] In particular, the number of temperature sensors 15 comprises a first number of temperature sensors arranged in the interior 9 of the housing 8 and a second number of temperature sensors attached to the outside of the housing 8 (not shown).

[0069] In particular, the control unit 11 can also be configured to change the model M stored in the memory unit 12 or to adapt it over time depending on a plurality of temperature values ​​T provided by the number of temperature sensors 15. Thus, the model M can also be designed as a model M that can be dynamically adapted over time.

[0070] Fig. 4 shows a schematic circuit diagram of a fourth embodiment of a charging station 1. The fourth embodiment according to Fig. 4 differs from the previous embodiments in the design of the cooling device 10. The cooling device 10 of Fig. 4 comprises a cooling unit 16, which has a specific coolant. The coolant is, in particular, gaseous or liquid and suitable for dissipating heat. Furthermore, it is possible to use a cooling device 10 that comprises both a fan 13 with a plurality of associated openings 14 in the housing 8 and a cooling unit 16.

[0071] Furthermore, Fig. 5 shows a schematic flow diagram of a method for operating a charging station 1 for charging and / or discharging an energy storage device 2 of an electric vehicle 3 with electrical energy by means of a multi-phase network 4 that can be coupled to the charging station 1. The charging station 1 is designed, for example, as explained in the preceding figures.

[0072] In step S1, the charging station 1 is operated to charge and / or discharge the energy storage device 2 of the electric vehicle 3. In step S2, the cooling device 10 for cooling the interior 9 is controlled depending on a model M for modeling a temperature development of the interior 9 of the charging station 1.

[0073] Although the present invention has been described using embodiments, it is capable of being modified in many ways.

[0074] LIST OF REFERENCE SYMBOLS

[0075] 1 charging station

[0076] 2 Energy storage tanks

[0077] 3 electric vehicles

[0078] 4 subscriber network

[0079] 5 charging cables

[0080] 6 Grid connection point

[0081] 7 Energy supply network

[0082] 8 housings

[0083] 9 Interior

[0084] 10 Cooling device

[0085] 11 Control unit

[0086] 12 storage units

[0087] 13 Fan

[0088] 14 Opening in the housing

[0089] 15 Temperature sensor

[0090] 16 Cooling unit with coolant

[0091] 101 connection terminal

[0092] 102 connection terminal

[0093] 103 Connection terminal

[0094] 200 EMC filter device

[0095] 300 LCL filter device

[0096] 400 AC / DC converters

[0097] 500 intermediate circuit

[0098] 600 DC / DC converters

[0099] 700 Output intermediate circuit

[0100] 701 Output potential tap

[0101] 702 Output potential tap

[0102] M model

[0103] S control signal

[0104] S1 Process step S2 Process step

[0105] T temperature value

Claims

PATENT CLAIMS 1. Charging station (1) for charging and / or discharging an energy storage device (2) of an electric vehicle (3) with electrical energy by means of a single-phase or multi-phase network (7) that can be coupled to the charging station (1), comprising: a housing (8) comprising an interior (9) in which a plurality of electrical and / or electronic components (200 - 700), a cooling device (10) for cooling the interior (9) and a control unit (11) for controlling the cooling device (10) are arranged, wherein the control unit (11) is configured to control the cooling device (10) for cooling the interior (9) depending on a model (M) for modeling a temperature development of the interior (9) of the charging station (1).

2. Charging station according to claim 1, characterized by a storage unit (12) for storing the model (M) for modeling the temperature development of the interior (9) of the charging station (1).

3. Charging station according to claim 1 or 2, characterized in that the control unit (11) is configured to proactively control the cooling device (10) for cooling the interior (9) depending on the model (M) for modeling the temperature development of the interior (9) of the charging station (1) by means of the model (M).

4. Charging station according to one of claims 1 to 3, characterized by a number of temperature sensors (15) for providing a temperature value (T) indicative of a temperature in the interior (9), wherein the control unit (11) is configured to control the cooling device (10) Cooling of the interior (9) depending on the model (M) and at least one provided temperature value (T).

5. Charging station according to one of claims 1 to 4, characterized in that the control unit (11) is configured to change the model (M) stored in the storage unit (12) depending on a plurality of provided temperature values ​​(T) of the number of temperature sensors (15).

6. Charging station according to claim 4 or 5, characterized in that the number of temperature sensors (15) comprises a first number of temperature sensors arranged in the interior (9) of the housing (8) and / or a second number of temperature sensors (15) attached to the outside of the housing (8).

7. Charging station according to one of claims 1 to 6, characterized in that the model (M) for modeling the temperature development of the interior (9) of the charging station (1) models a heat development of at least a subset of the electrical and / or electronic components (200 - 700) of the charging station (1) using current curves of the electrical currents of the components (200 - 700) during charging and / or discharging.

8. Charging station according to one of claims 1 to 6, characterized in that the model (M) for modeling the temperature development of the interior (9) of the charging station (1) models the heat development of at least a subset of the electrical and / or electronic components (200 - 700) of the charging station (1) using current curves of the electrical currents of the components (200 - 700) during charging and / or discharging and using a charging or discharging time derived from communication with the electric vehicle (3) is modeled.

9. Charging station according to one of claims 1 to 8, characterized by a communication module which is configured to communicate with the electric vehicle (3) in accordance with high-level communication, in particular in accordance with the ISO 15118 standard, in particular to negotiate a charging plan with a charging electronics of the electric vehicle (3) coupled to the charging station (1).

10. Charging station according to one of claims 1 to 9, characterized in that the cooling device (10) comprises a fan (13) and a plurality of openings (14) in the housing (8).

11. Charging station according to one of claims 1 to 9, characterized in that the cooling device (10) comprising a cooling unit (16) includes a specific coolant.

12. System with a plurality N of charging stations (1), wherein the respective charging station (1) is designed according to one of claims 1 to 9.

13. Method for operating a charging station (1) for charging and / or discharging an energy storage device (2) of an electric vehicle (3) with electrical energy by means of a single-phase or multi-phase network (7) that can be coupled to the charging station (1), wherein the charging station (1) has a housing (8) comprising an interior (9) in which a plurality of electrical and / or electronic components (200 - 700), a cooling device (10) for cooling the interior (9) and a control unit (11) for controlling the cooling device (10) are arranged, comprising: Control (S2) of the cooling device (10) for cooling the interior (9) depending on a model (M) for modeling a temperature development of the interior (9) of the charging station (1).

14. Computer program product which causes the execution of the method according to claim 13 on a program-controlled device.

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