Charging station

Abstract

The present invention relates to a charging station (2), in particular wall box, for charging an electric vehicle, the charging station (2) having - a housing (10), - an electronic device (20) for controlling a charging current, which is located in the housing (10), and - a temperature control device (30) for controlling the temperature of the electronic device (20), which is or can be thermoconductively connected to the electronic device (20), wherein the temperature control device (30) has a heat pipe (32) with a fluid heat transfer medium (W), characterized in that the heat pipe (32) is led out of the housing (10) via an opening (12) in the housing (10) and the opening requires sealing or is sealed.

Description

[0001] Charging station

[0002] The present invention relates to a charging station for charging an electric vehicle, wherein the charging station has an electronic device for controlling a charging current, and wherein the charging station has a temperature control device for temperature control of the electronic device.

[0003] Such charging stations are also called “wall boxes,” even if they are not attached to a wall.

[0004] The electric vehicle can be one that is capable of fully electric propulsion, at least for short periods. The electric vehicle has a battery that can be charged using the charging station.

[0005] Electromobility requires a network of charging stations (EV charging facilities) for the battery that is as comprehensive as possible. This network is currently being developed. The focus, particularly in Germany, is on alternating current (AC) wallboxes. These provide the vehicle with an alternating voltage via a simple contactor or relay circuit, which typically requires rectification. The AC wallboxes can also provide operator protection (e.g., through residual current detection) and, through integrated or connected components, also ensure that the existing power supply circuit is not overloaded.

[0006] Due to various restrictions, AC wallboxes are usually limited to a charging capacity of 22 kW. Charging capacities above 22 kW are often not possible in private or domestic environments.

[0007] As already mentioned, the flowing alternating current typically needs to be rectified for the battery charging process. This occurs, for example, in a module called an on-board charger (OBC), which features a rectifier and is installed in the electric vehicle. For technical and economic reasons, the OBC is often not designed for high charging power. The OBC may even be designed for less than 22 kW charging power.

[0008] In principle, the electric vehicle can also be powered with direct current (DC) instead of alternating current (AC). Since rectification is not required when powering the electric vehicle with DC voltage, an OBC is not required. This eliminates the need for the OBC as a factor limiting charging power, allowing higher charging power to be supplied to the battery, for example, more than 22 kW.

[0009] It can therefore be assumed that, in addition to rapid chargers using direct current in public areas, DC wallboxes will also become increasingly popular in private homes. A wallbox or charging station is primarily powered by alternating current (AC). Therefore, the rectification of the alternating current into direct current can be handled by the electronic device in the charging station, which ultimately also includes controlling the charging current. This conversion, i.e., rectification, cannot be achieved completely without losses. Conversion losses occur, which can amount to a few percent of the charging power and represent power loss. This power loss takes the form of waste heat.

[0010] For example, a 22 kW charging station with a theoretical efficiency of 0.99 can theoretically generate up to 220 W of power loss in the form of waste heat, which must be dissipated from the area surrounding the electronic equipment. In practice, higher values ​​are to be expected.

[0011] The waste heat can be dissipated using the aforementioned temperature control device, for example, using heat sinks and / or a fan. The better the waste heat is dissipated, the lower the temperature at the electronic device. This temperature must be kept low to prevent the electronic components of the device from aging too quickly. For better heat dissipation and thus a lower temperature of the electronic device, larger heat sinks and / or fans can be used. However, this also means that the charging station must be larger to better dissipate the waste heat, which makes it more expensive to manufacture and sell and ultimately less attractive at the installation site. In addition, it is generally necessary to provide a fail-safe and fire-protected charging station with a temperature control device.

[0012] CN 2 17 415 520 U, CN 2 11 745 104 U, and CN 1 14 701379 A each disclose a charging station comprising a housing, an electronic device arranged therein, and a temperature control device connected to the electronic device in a heat-conducting manner. The temperature control device comprises a heat pipe with a fluid heat transfer medium. The housing completely accommodates the heat pipe and is equipped with at least one fan. The fan ensures that the heat pipe is exposed to an air flow through the housing due to forced convection, so that waste heat from the electronic device is transported out of the housing.

[0013] CN 2 14 775 425 U discloses a charging station with a housing forming two chambers, an electronic device arranged in a first chamber, and a temperature control device connected to the electronic device in a heat-conducting manner, which leads to the second chamber. The temperature control device has a heat pipe with a fluid heat transfer medium. Furthermore, fans are provided in the second chamber on the heat pipe, which ensure air exchange in the housing or in the second chamber, so that waste heat originating from the electronic device arranged in the first chamber is ultimately transported out of the second chamber via slots in the housing.

[0014] CN 1 13 865 391 A discloses a charging station comprising a housing, an electronic device arranged therein, and a temperature control device connected to the electronic device in a heat-conducting manner. The temperature control device comprises a heat pipe with a fluid heat transfer medium. The heat pipe is predominantly routed within the housing and predominantly vertically. Waste heat can be dissipated via outside air via horizontal outer sections of the heat pipe, which are equipped with fins.

[0015] The present invention is based on the problem of improving the charging station so that waste heat from the electronic device can be dissipated in a space-saving and fail-safe manner. Furthermore, a use that can also be used to improve existing charging stations is to be specified.

[0016] To solve this problem, the present invention provides a charging station having the features of claim 1. Furthermore, the features of the further claims are proposed as further solutions to the problem.

[0017] Proposed is a charging station for charging an electric vehicle comprising a housing. The charging station has an electronic device arranged or to be arranged in the housing for controlling a charging current. The charging station further has a temperature control device, which is to be connected or to be connected to the electronic device in a thermally conductive manner, for controlling the temperature of the electronic device. The temperature control device has a heat pipe with a fluid heat transfer medium.

[0018] As proposed, the heat pipe exits the housing through at least one sealed penetration. This prevents water from entering the housing and increases reliability.

[0019] The heat pipe is a well-known object in thermal engineering. In particular, the heat pipe proposed here comprises a metallic vessel that is at least partially elongated, possibly bent or curved, in which a volume containing the heat transfer medium is hermetically encapsulated. In particular, the vessel comprises an evaporator region for absorbing heat by evaporating the heat transfer medium within the volume, and a condenser region spaced apart from the evaporator region for dissipating heat by condensing the heat transfer medium within the volume. The evaporator region is intended, in particular, to be arranged near or on the electronic device. The condenser region is, in particular, to be arranged at a distance therefrom in order to dissipate the absorbed waste heat elsewhere.

[0020] This advantageously results in the fact that the waste heat from the electronic device no longer needs to be dissipated, or at least no longer needs to be dissipated significantly, out of the housing as an airflow directly past the electronic device. The waste heat can now be advantageously transported through the heat pipe to a location away from the electronic device, where it can be dissipated into the environment. This allows the housing to be designed to be slimmer or less focused on dissipating the waste heat from the electronic device.

[0021] The heat pipe allows the temperature control device to be more flexibly adapted to the housing. Thanks to the heat pipe, the housing can be designed to be very space-efficient, particularly because the waste heat can be dissipated by the heat pipe through condensation of the heat transfer fluid at a greater distance from the electronic device and thus at a lower ambient temperature.

[0022] Particularly preferably, the temperature control device is designed such that the heat transfer medium transports or dissipates the waste heat at least substantially or exclusively by natural convection. For this purpose, the heat pipe should be arranged at least partially or predominantly, preferably completely, vertically aligned. It can be provided that the temperature control device can be operated freely from enforced convention, in particular with regard to the heat transfer medium and / or with regard to the dissipation of the waste heat away from the heat pipe. It can be provided that the temperature control device does not have a working machine for a fluid, such as a fan or a pump. In particular, it is provided that the waste heat is released from the temperature control device to the environment at least substantially or exclusively by natural convection.

[0023] The charging station considered here is preferably a wall box. The charging station is designed or intended, in particular, for wall mounting. When wall-mounted, the charging station is spaced apart from the ground or floor. The charging station preferably has a fastening option for wall mounting, for example, fastening holes in the housing, in particular for screwing the charging station to a facade or wall, in particular spaced apart from the floor. The charging station is preferably designed for freestanding use without a stand. However, it is not excluded that the charging station can be arranged or installed with a stand.

[0024] If the heat pipe has a heat pipe and / or a two-phase thermosiphon, a particularly effective removal of the waste heat is possible. In particular, the heat pipe has a capillary structure. In particular, the two-phase thermosiphon does not have a capillary structure. The capillary structure is usually provided or not provided inside the heat pipe in order to interact with the liquid heat transfer medium and transport it to the location of evaporation. The capillary structure can ensure that the partially liquid heat transfer medium is transported by capillary action. This is useful if the heat pipe is unfavorable for the flow of a liquid, for example, if it runs horizontally. The heat transfer medium can comprise water or at least one other substance that can undergo a phase transition between at least two states: solid, liquid, and gaseous. The other substance or substancesThe other substances can, for example, comprise at least one hydrocarbon compound and / or ammonia. In particular, the heat transfer medium should be capable of undergoing a phase transition in the temperature range between 0 and 100°C in order to be able to utilize the latent heat of fusion or latent heat of vaporization to dissipate heat from the electronic device under typical conditions. Depending on the fill quantity of the heat transfer medium in the heat pipe, a pressure in the heat pipe can be adjusted, thus influencing the temperature of a phase transition. Water as a heat transfer medium is non-toxic and, depending on the fill quantity in the heat pipe, well suited for various operating temperatures. Other heat transfer media may be able to transport heat / waste heat even better due to a higher or at least adjusted enthalpy of vaporization compared to water.

[0025] Preferably, the temperature control device is designed to dissipate a heat flow emanating from the electronic device of up to or at least 250 W, 500 W, or 1000 W at an ambient temperature of up to 60°C. In particular, a design with a maximum performance of the temperature control device in mind may be useful to avoid overdimensioning. A design with a minimum performance may be useful to prepare for upgrades of the electronic device. The specified values ​​in particular have proven suitable in the field of e-mobility, where power losses of this magnitude must be dissipated in the form of waste heat, which can be achieved effectively with the help of a heat pipe.

[0026] The electronic device may comprise a control component which is designed in particular to control the charging current.

[0027] The control component can comprise a so-called power section or power electronics, preferably for rectifying the charging current and / or for regulating the charging current, in particular while dissipating waste heat. Conversion by means of the control components is of course also conceivable. For example, the power section can comprise a converter, in particular a frequency converter, a rectifier, and / or an inverter. In particular, the control component or power section comprises at least one of the following electronic components: diac, bipolar power transistor, power MOSFET, GTO thyristor, IGBT, thyristor, triac, rectifying diode, and / or power capacitor.

[0028] The heat pipe can be thermally conductively connected to the control component of the electronic device. The heat pipe can be in surface contact with the control component or its heat sink to absorb the waste heat. The heat pipe can be soldered, glued, clamped, screwed, and / or inserted into the electronic device or heat sink. In particular, if the heat pipe is directly or indirectly attached to the control component, the heat transfer medium in the heat pipe can evaporate in a targeted manner, thus absorbing the waste heat and transporting it in the heat pipe. A thermal paste can be applied between the heat pipe and the control component or heat sink to further improve heat transfer.

[0029] Preferably, an outer section of the heat pipe is arranged outside the housing for heat exchange with the environment. This allows not only effective transport of waste heat from the control component to another location within the housing, but also to the environment outside the housing, without the need for a fan to drive airflow through the housing. The outer section can be arranged on the housing in a manner adapted to natural or forced convection of the outer section. For example, the outer section can be arranged such that surface sections of the outer section, such as cooling fins, are arranged vertically and are cooled by the ambient air via natural convection.

[0030] The heat pipe preferably extends through a wall of the housing or housing wall. The heat pipe preferably extends from the inside to the outside, in particular from the interior of the housing to the surroundings of the housing outside the housing. An outer section of the heat pipe can be arranged outside the housing. In particular, an inner section of the heat pipe is thermally connected to the electronic device. The inner section is preferably arranged inside the housing.

[0031] Preferably, the heat pipe is led out of the housing via penetrations in the housing that are to be sealed or are sealed - or at least one of such penetrations. The penetrations can be feedthroughs, for example sealing feedthroughs. In particular, the feedthrough is a feedthrough similar to or identical in construction to a cable feedthrough. In particular, the feedthrough or cable feedthrough is designed for a temperature range between 0°C and 100°C. This ensures that the heat pipe does not create any weak points on the housing. In particular, this prevents moisture from penetrating the housing. The penetrations can be arranged at the bottom, side and / or top of the housing. A penetration can be formed by or have at least one bore or opening in the housing.

[0032] The penetration preferably has a sealing device, in particular a cable gland. The heat pipe is guided out of the housing, in particular through the sealing device. The sealing device is arranged, in particular, on the housing and / or on the heat pipe, for example, in contact therewith, in particular, fastened thereto. This creates a good and permanently reliable seal while simultaneously providing good accessibility to this seal for inspection or replacement. Likewise, the heat pipe can be easily replaced or repaired as needed.

[0033] The penetration can have a sealing device that is in particular at least substantially annular, for example having or consisting of a seal that is in particular designed as a sleeve or sleeve seal. The sealing device can surround the heat pipe in particular in a ring shape. The sealing device can be at least partially flexible. The sealing device can have a nozzle that can seal against the heat pipe and the housing, for example by means of at least one seal. For example, the sealing device or seal can be arranged in the housing or outside the housing (or also on the inside and outside). The seal can be designed as a flat seal (flat and / or square in cross-section) or as a round seal (round in cross-section); a combination of flat and round seals is also conceivable.The sealing device can be inserted, fastened, glued and / or screwed to the housing, in particular by means of a nut. For example, the sealing device for a seal has plastic, silicone and / or rubber as its material or the seal is made thereof. The sealing device can bear against the heat pipe and / or the housing. The sealing device can, for example, guide the heat pipe relative to the housing. The sealing device can hold and / or seal the heat pipe. In particular, the sealing device is arranged and / or inserted in or on an opening and / or bore in the housing. The sealing device or the penetration can alternatively or additionally be formed on the housing and / or be a section of the housing.

[0034] The penetration can have a cable gland or be formed by a cable screw connection. The cable gland can also be part of the sealing device or form this. A cable gland is a form of cable bushing or cable entry, i.e. a bushing or entry designed for a cable. Cable glands ensure that a cable can be passed through tightly using a sealing element or sealing insert. The idea is that the heat pipe is arranged in the cable gland instead of a cable. This is because it has been found that the heat pipe can also be passed through tightly using a cable gland, and not only cables can be used with the cable gland. The heat pipe is particularly preferably led out of the housing in an atmosphere-tight manner. A protection class can particularly preferably be provided for the cable gland, cf. German standard DIN EN 60529, in particular VDE 0470-1:2014-09.Protection class IP66 is preferred. In particular, the heat pipe is particularly well mechanically secured by means of a cable gland, thus providing excellent protection even in the event of impacts against the charging station. In particular, the penetration has a cable gland. The cable gland can be attached to the housing. The heat pipe is preferably led out of the housing through the cable gland, in particular, in an atmosphere-tight manner.

[0035] Atmosphere-tight means, for example, airtight and / or waterproof, such as splashproof, so that even when directly watered with a water jet during heavy rain or a jet from a pressure washer, at least a small amount of water, or even no water at all, can penetrate. Protection class IP66 is defined as atmospherically sealed.

[0036] The outer section is located predominantly or exclusively outside the housing. This creates a particularly environmentally friendly charging station. In particular, even in heavy rain, water cannot penetrate the penetration and reach the electronics, while waste heat is dissipated very effectively. In particular, fans, air vents, or similar devices, which would otherwise allow water to enter the housing, are eliminated.

[0037] A cable gland typically comprises a sleeve- or tubular-shaped insert part that can be inserted into an opening in a wall or housing and has at least a first threaded portion and optionally a second threaded portion. A union nut can be screwed onto the insert part, particularly when a cable or heat pipe is passed through. The union nut typically has an internal thread for the first threaded portion and an internal cone for interacting with a cage of the insert part.

[0038] A cage and / or sealing element can be provided on the plug-in part, in particular adjacent to the first threaded section. In particular, the sealing element is arranged in the cage. The union nut can, in particular by means of a cone, radially compress the cage and / or the sealing element when screwed on, for example in order to seal the plug-in part against the heat pipe. The cage is formed in particular from a plurality of axially aligned webs or fingers that are arranged at a free end for the union nut. Adjacent to the first threaded section, a radial projection or shoulder can be provided that can strike when inserted into the wall or housing.

[0039] Furthermore, a further nut can be arranged on the first and / or second threaded section, which is preferably provided as a lock nut so as to be pressed against the wall or the housing, in particular in cooperation with the union nut and / or a / the radial projection of the plug-in part. The plug-in part can be designed to seal against the wall or the housing. At least one seal or at least one sealing ring, or two or more thereof, can be provided on the plug-in part, which is / are intended to bear against the wall or the housing and the nut and / or the union nut. On one axial side, in particular away from or opposite the union nut, a seal or a sealing ring can be provided, for example on the nut. A seal or a sealing ring can be provided on the first or second threaded section respectively.

[0040] Finally, in preferred embodiments, it is provided that the penetration has a cable gland with a plug-in part and the heat pipe is led out of the housing via the cable gland and through the plug-in part inserted into the housing.

[0041] In addition, it can be provided that the plug-in part is sealed from the housing by means of at least one seal, in particular a sealing ring, of the cable gland.

[0042] The plug-in part can be sealed from the heat pipe by means of at least one sealing element of the cable gland accommodated in the plug-in part, in particular wherein the sealing element is accommodated in a cage formed from axially extending fingers.

[0043] It is also possible that the plug-in part is fastened to the housing by means of a nut of the cable gland screwed onto the plug-in part, in particular wherein the nut is screwed against at least one seal or sealing ring.

[0044] Alternatively or additionally, the heat pipe can be clamped to the cable gland by means of a union nut screwed onto the plug-in part of the cable gland, in particular wherein the union nut surrounds the sealing element and clamps it against the heat pipe.

[0045] If the outer section has cooling surfaces and / or a heat sink, the waste heat absorbed in the housing can be dissipated to the environment even more effectively. The cooling surfaces or heat sink can be a body attached to the heat pipe with elongated or flat sections made of copper and / or aluminum or alloys thereof. In particular, the cooling surfaces are or should be aligned at least partially and / or predominantly vertically to achieve natural convection.

[0046] Preferably, the outer section is arranged on the housing in a shock-protected manner. This can be achieved by limiting and / or surrounding the outer section, at least in sections, by projections on the housing. This ensures that the outer section is not accidentally deformed or damaged.

[0047] If the heat pipe is arranged non-horizontally at least in part and / or at least substantially vertically at least in part, effective waste heat removal is ensured, since the return flow of condensed heat transfer medium back to the waste heat source usually only functions satisfactorily with an inclined heat pipe arrangement. Non-horizontal is an arrangement that is inclined by at least 5° relative to the horizontal. At least substantially vertical is an arrangement that is inclined by at least 45° from the horizontal, preferably at least 60°, more preferably at least 70° or 80°, particularly preferably 85° or 90°±2°.

[0048] If the temperature control system includes a temperature-dependent fan, the safety of the charging station is increased. This is because the removal of waste heat via the heat pipe may not be sufficient to keep the temperature at the control component at a sufficiently low level. In this case, the fan can be started based on a measured or thermostatically determined temperature, allowing the waste heat from the heat pipe and / or the housing to be more effectively dissipated.

[0049] Preferably, a charging cable is provided that is electrically connected to the electronic device, with the charging cable having a charging plug at a free end for connection to the electric vehicle. This makes it possible to provide a charging station that is already fully operational and, thanks to the heat pipe, is improved over known charging stations.

[0050] Finally, as a further solution, the use of a temperature control device for controlling the temperature of an electronic device of a charging station is proposed, wherein the charging station is designed as described above, in particular having a / the heat pipe. In particular, a use with the features of claim 17 is proposed.

[0051] It is also proposed that the charging station be designed as a wallbox for wall mounting. Likewise, the use of the charging station described here as a wallbox for wall mounting is proposed. In other words, it is proposed that the charging station be designed or provided as a wallbox and / or mounted on a wall, in particular without a stand.

[0052] Further details and advantages of the present invention will become apparent from the following description of an embodiment in conjunction with the drawings, in which:

[0053] Figure 1 is a cross-sectional view of a first embodiment of a charging station according to the invention with a temperature control device having a heat pipe and

[0054] Figure 2 is a perspective view of a second embodiment of a charging station according to the invention with a temperature control device having a heat pipe.

[0055] Fig. 1 shows a cross-sectional view of a charging station 2. The charging station 2 is suitable for charging an electric vehicle (not shown) and has a housing 10. An electronic device 20 for controlling a charging current is arranged in the housing 10, wherein the electronic device is designed to rectify alternating current. The charging station 2 is attached to a wall 100. The wall 100 can provide an alternating voltage for the charging station 2, which can then be rectified in the charging station 2. The charging station 2 is designed as a wall box.

[0056] Connected to the electronic device 20 is a temperature control device 30, which is provided for controlling the temperature of the device 20. The temperature control device 30 has a heat pipe 32 with a fluid heat transfer medium W contained therein. The heat pipe 32 is a two-phase thermosiphon, wherein the heat pipe 32 is filled with water as the heat transfer medium W. The water is present in both liquid and gaseous states when the heat pipe 32 is at room temperature.

[0057] The temperature control device 30 is designed to dissipate a heat flow or waste heat of 500 W at an ambient temperature of up to 60°C from the electronic device 20.

[0058] The heat pipe 32 is thermally connected to a control component 22 of the electronic device 20 via a heat sink 24 of the electronic device 20.

[0059] The heat pipe 32 is coated with thermal paste and screwed to the heat sink 24. The heat transfer medium W can evaporate in the heat pipe 32 when the electronic device 20 generates sufficient waste heat. The heat sink 24 is in thermally conductive contact with the electronic device 20 or the control component 22.

[0060] An outer section 34 of the heat pipe 32 leading out of the housing 10 is arranged outside and above the housing 10 for heat exchange with the environment U.

[0061] The heat pipe 32 is led out of the housing 10 via a sealed penetration 12 of the housing 10. The penetration 12 is arranged on top of the housing 10.

[0062] In particular, the heat pipe 32 extends out of the top of the housing 10, i.e., at a top side of the housing 10. In particular, the heat pipe 32 is oriented predominantly vertically. This allows for particularly effective use of the heat pipe 32 and, with regard to the heat transfer medium W, the natural convection within the heat pipe 32 is utilized effectively.

[0063] The penetration 12 has a sealing device, more precisely a cable gland. The heat pipe 32 is led out of the housing 10 via the penetration 12 in an atmosphere-tight manner. The cable gland is inserted into the housing 10 in a sealing manner, for example by means of a sealing ring or gasket, typically screwed on with a nut. The heat pipe 32 is clamped in the cable gland with a union nut of the cable gland. A sealing element rests on the heat pipe 32 and is compressed by the union nut in order to seal directly on the heat pipe 32. In the present case, the cable gland is predominantly or substantially housed in the housing 10 and is therefore not visible in the figures. The outer section 34 has cooling surfaces 36 on a heat sink 38. Here, the waste heat of the electronic device 20 can be dissipated to the environment U convectively, i.e., typically via natural convection.It is also conceivable that a fan is arranged on the outer section 34 in order to be able to dissipate even more waste heat than is possible with a purely passive arrangement or with only natural convection.

[0064] The outer section 34 is arranged on the housing 10 in a shock-protected manner by being located on top of or above the housing 10. This prevents lateral contact with the charging station 2 from causing damage to the outer section 34.

[0065] The heat pipe 32 is arranged non-horizontally. More precisely, the heat pipe runs essentially vertically.

[0066] The temperature control device 30 has a fan 40 that can be activated depending on the temperature.

[0067] The charging station 2 of Fig. 1 further comprises a charging cable 50 which is electrically connected to the electronic device 20 and is wound around the housing 10.

[0068] Not shown is that the charging cable 50 has a charging plug 52 at a free end 54 for connection to the electric vehicle.

[0069] In the charging station 2 shown in Fig. 2, the heat pipe 32 is used to control the temperature of the electronic device 20. Reference is made to the fact that an essential aspect of the present invention is that known charging stations 2 can be improved with a heat pipe 32. In this respect, the use of the heat pipe 32 in a charging station 2 is generally proposed.

[0070] Fig. 2 shows another embodiment of a charging station 2. For clarity, a front cover on the housing 10 is hidden, so that an electronic device 20 in the housing 10 is visible.

[0071] The charging station 2 is suitable for charging an electric vehicle. The charging station 2 essentially corresponds to the charging station 2 in Fig. 1. In contrast, the heat pipe 32 of the temperature control device 30 is not led out of the top of the housing 10, but rather from the side via a penetration 12. As such, the heat pipe 32 runs horizontally in sections. Furthermore, the heat pipe 32 is designed here as a heat pipe, after which a capillary structure in the horizontal section of the heat pipe 32 ensures the return transport of the condensed or liquid heat transfer medium W from the outer section 34 back into the housing 10.

[0072] Cooling surfaces 36 of the heat sink 38 on the outer section 34 are arranged substantially vertically so that natural convection can take place.

[0073] The charging station 2 further comprises a charging cable 50 electrically connected to the electronic device 20, which has a charging plug 52 for connection to the electric vehicle at a free end 54. The charging cable 50 is wound or can be wound around the outside of the housing 10.

[0074] Charging station 2 is designed as a wallbox and mounted on a wall (not shown). In particular, charging station 2 is intended exclusively for wall mounting.

[0075] List of reference symbols

[0076] 2 charging stations

[0077] 10 housings

[0078] 12 Penetration

[0079] 20 electronic device

[0080] 22 Tax component

[0081] 24 heat sinks

[0082] 30 T emperier device

[0083] 32 heat pipe

[0084] 34 Outer section

[0085] 36 cooling surfaces

[0086] 38 heat sinks

[0087] 40 fans

[0088] 50 charging cables

[0089] 52 charging plugs

[0090] 54 free end

[0091] 100 wall

[0092] U environment

[0093] W heat transfer medium

Claims

Claims Charging station (2) for charging an electric vehicle, in particular wallbox, the charging station (2) comprising - a housing (10), - an electronic device (20) arranged in the housing (10) for controlling a charging current, and - a temperature control device (30) to be connected or connected to the electronic device (20) in a thermally conductive manner for controlling the temperature of the electronic device (20), wherein the temperature control device (30) comprises a heat pipe (32) with a fluid heat transfer medium (W), characterized in that the heat pipe (32) is led out of the housing (10) via at least one sealed penetration (12) of the housing (10). Charging station (2) according to claim 1, characterized in that the heat pipe (32) comprises a heat pipe with a capillary structure and / or a two-phase thermosiphon without a capillary structure. Charging station (2) according to claim 1 or 2, characterized in that the heat transfer medium (W) comprises water or at least one other substance that can undergo a phase transition between at least two solid, liquid, and gaseous states.Charging station (2) according to one of the preceding claims, characterized in that the temperature control device (30) is designed to dissipate a heat flow emanating from the electronic device (20) of up to or at least 250 W, 500 W, or 1000 W at an ambient temperature of up to 60°C. Charging station (2) according to one of the preceding claims, characterized in that the heat pipe (32) is connected in a thermally conductive manner to a control component (22) of the electronic device (20). Charging station (2) according to one of the preceding claims, characterized in that the heat pipe (32) is soldered, glued, clamped, screwed, and / or inserted to the electronic device (20) and / or to the heat sink (24).

7. Charging station (2) according to one of the preceding claims, characterized in that an outer section (34) of the heat pipe (32) for heat exchange with the environment (U) is arranged outside the housing (10).

8. Charging station (2) according to one of the preceding claims, characterized in that the penetration (12) has a sealing device, in particular a cable gland, and the heat pipe is led out of the housing (10) through the sealing device arranged on the housing (10) and / or on the heat pipe (32).

9. Charging station (2) according to claim 7 or 8, characterized in that the outer section (34) has cooling surfaces (36) and / or a cooling body (38).

10. Charging station (2) according to one of claims 7 to 9, characterized in that the outer section (34) is arranged on the housing (10) in a shock-protected manner in that the outer section (34) is at least partially delimited and / or surrounded by the housing (10) and / or is arranged above the housing (10).

11. Charging station (2) according to one of the preceding claims, characterized in that the heat pipe (32) is arranged at least in sections non-horizontally and / or vertically.

12. Charging station (2) according to one of the preceding claims, characterized in that the temperature control device (30) has a temperature-dependent activatable fan (40).

13. Charging station (2) according to one of the preceding claims, characterized by a charging cable (50) electrically connected to the electronic device (20) and having a charging plug (52) at its free end (54) for connection to the electric vehicle.

14. Charging station (2) according to one of the preceding claims, characterized in that the heat pipe (32) has an elongated metallic vessel in which a volume containing the heat transfer medium (W) is hermetically encapsulated, wherein the vessel has an evaporator region for absorbing heat by evaporating the heat transfer medium (W) in the volume and a condenser region spaced from the evaporator region, preferably in the outer section (34), for dissipating heat by condensing the heat transfer medium (W) in the volume. Charging station (2) according to one of the preceding claims, characterized in that the charging station (2) is designed as a wall box for wall mounting. Use of a charging station (2) according to one of the preceding claims as a wall box for wall mounting. Use of a temperature control device (30) with a heat pipe (32) containing a fluid heat transfer medium (W) in a charging station (2) for charging an electric vehicle, the charging station (2) comprising a housing (10), the electronic device (20) arranged in the housing (10) for controlling a charging current, wherein the temperature control device (30) for controlling the temperature of the electronic device (20) is or is connected to the electronic device (20) in a thermally conductive manner, and wherein the heat pipe (32) is or is led out of the housing (10) via at least one penetration (12) of the housing (10) that is to be sealed or is sealed.

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