Charging device integrated into a kerb, kerbstone or paving stone, for charging an energy store of an electrically driven vehicle

Abstract

The invention relates to a charging device (18) which is integrated into a kerb, kerbstone or paving stone, for charging an energy store (30) of an electrically driven vehicle (32), said charging device comprising: a main body (34) which is made of a metal, concrete, natural stone, plastic or composite material and has an inner receiving space (44) which is delimited on multiple sides by the main body (34); a cover (46) which seals the receiving space (44); a charging unit (52) which is located in the receiving space (44); and a charging socket (24) which is electrically connected to the charging unit (52) and mechanically connected at least indirectly to the cover (46). According to the invention, the cover (46) can be heated by means of a heating element (80).

Description

[0001] DESCRIPTION

[0002] Curb, kerb or paving stone charging device for charging an energy storage device of an electrically powered vehicle

[0003] The invention relates to a curb, kerb or paving stone charging device for charging an energy storage device of an electrically powered vehicle, comprising a base body made of a metal, concrete, natural stone, plastic or composite material, an inner receiving space delimited by the base body on several sides, a cover by which the receiving space is closed, components of a charging unit arranged in the receiving space, and a charging socket which is mechanically connected at least indirectly to the cover.

[0004] Such curbside charging devices are charging stations integrated into the curb or kerb, to which vehicles can be connected via an electrical connection to charge their energy storage units or batteries. This applies particularly to purely electric vehicles, but also to hybrid vehicles. Chargeable vehicles can be passenger cars, trucks, motorcycles, or electric bicycles.

[0005] Due to the new legislation, the growing interest of the population in climate protection and the improved economic viability of electrified vehicles, it is to be expected that the proportion of electric vehicles will increase dramatically, especially in inner-city areas, so that the available charging infrastructure must be expanded significantly. This means that some of the existing parking spaces must be provided with appropriate charging options in order to ensure individual mobility in the future.

[0006] Known concepts for this include the use of streetlights, additional charging stations, or wall boxes on building walls. All of these concepts require additional space and cause disruption to pedestrians due to the charging cables required.

[0007] For this reason, charging systems have become popular where the charging devices are integrated into the curb or kerb. This has the advantage that no charging stations obstruct the sidewalks and thus spoil the visual appearance. Instead, no additional space is required, simply utilizing existing infrastructure. Modularization allows for high flexibility and retrofit capability. Damage to the charging infrastructure caused by vehicle accidents can also be prevented.

[0008] A special design of such a curb with electronics for charging a vehicle is known from WO 2021 / 156621 A1. This curb has a modular design and comprises a base element into which an exchangeable receptacle can be inserted. The components for electrically charging a vehicle's battery are arranged in this receptacle. The receptacle is open at the top and is closed by a lid, which borders the base element towards the street with a sloping wall. The base element, as well as the receptacle and the lid, are made of plastic. In addition, designs in which components can be extended from the lid are known.

[0009] The problem with such a curb is that

[0010] Precipitation and temperatures below 0°C limit the mobility of the components. Even on models with a permanently installed charging socket, the covers can freeze. Furthermore, this curb has no features to indicate the amount of energy delivered or the charging status. In heavy snowfall, such curbs may even be impossible to find and pose a slip hazard. Authentication issues can also arise.

[0011] The challenge, therefore, is to provide a curb, kerb, or paving stone charging device for charging the energy storage unit of an electrically powered vehicle that can be reliably operated even in winter. This requires ensuring the mobility of the parts that can be moved relative to one another and ensuring clear visibility of the displays. The functionality and accessibility of the charging sockets must also be ensured.

[0012] This object is achieved by a curb, kerb or paving stone charging device for charging an energy storage device of an electrically powered vehicle having the features of main claim 1.

[0013] A curb, kerbstone, or paving stone charging device according to the invention for charging an energy storage device of an electrically powered vehicle has a base body which is made from concrete, natural stone, plastic, or composite material, for example by casting. Concrete is of course also understood to mean ultra-high-performance concrete (UHPC), fiber-reinforced concrete, or polymer concrete in which a plastic is used as a binding agent instead of cement. A receiving space is formed inside the base body and is delimited by the base body on several sides. The base body has, in particular, a base and three or four side walls. The receiving space is closed by a cover, which is placed, for example, on the upwardly facing ends of the four side walls. However, the cover can of course also form one or more side walls of the receiving space.Components of a charging unit are arranged in the receiving space. These components are attached to the lid, for example, but can also be attached to the base body. These components of a charging unit can form a completely self-sufficient charging unit that only requires a power connection and contains all electronic components, or they can be present individually and serve in some way to regulate or protect the charging socket and the charging process. Accordingly, individual electronic components of the charging unit, such as an energy meter, charging controller, a power contactor or a transmitting and receiving unit for authentication, or similar, can be arranged in the receiving space. Components of the charging unit are therefore understood to mean individual components or multiple components that can serve to charge the energy storage system of the electric vehicle or hybrid vehicle.Furthermore, the curb, kerb, or paving stone charging device has a charging socket that is mechanically connected, at least indirectly, to the cover. This mechanical connection can be made via lifting or pivoting mechanisms or via additional parts attached to the cover. Naturally, this charging socket is electrically connected to the charging unit or components of the charging unit.

[0014] According to the invention, the lid can be heated using a heating element. Various heating elements as well as the use of multiple heating elements are conceivable here, whereby electrically operated heating elements in particular can be used due to the existing connection of the curb, kerb, or paving stone loading device to a voltage source. By heating the lid in this way, parts on the lid that move relative to one another, such as lifting or pivoting mechanisms, can be prevented from jamming due to ice formation, or existing layers of ice can be melted. This can be done proactively or as needed. Furthermore, the display unit can be kept free of ice and snow, thus ensuring a clear view. By heating the lid, the entire upper side can be kept free of ice and snow, so that the curb always remains accessible.The charging socket remains usable, and any existing socket cover can be folded down. This also ensures access to a transmitting and receiving unit for authentication. Such a curb, kerb, or paving stone charging device can therefore be fully used even in winter weather conditions. However, it is sufficient to heat the cover, as the essential components for using the curb as a charging station are located there, eliminating the need for extensive heating.

[0015] The lid is preferably made of metal, which ensures good thermal conductivity, so that there is no need to ensure full-surface heating via the heating element(s), but even small heating surfaces can be sufficient through heat conduction.

[0016] It is particularly preferred if a resistance wire serves as the heating element. Such a resistance wire is also called a heating wire and is made from a heating conductor alloy consisting of two or more metals that have a relatively high specific electrical resistance and a low tendency to oxidation, and whose function is accordingly to convert electrical energy into heat. Such a resistance wire requires almost no installation space and can be easily laid to specific locations to apply heat in a targeted manner. In addition, it can be operated cost-effectively with low voltages, for example 12 V, and has a high temperature resistance. In a further embodiment, the resistance wire is integrated into a seal that is arranged between the cover and components connected to the cover.This eliminates the need for additional insulation of the wire, and the heating element is installed in a single assembly step along with the required seals, eliminating the need for additional assembly steps. Furthermore, when integrated into the seal between the base body and the lid, the lid is heated from all sides, ensuring rapid and complete heating of the lid.

[0017] In an advantageous embodiment of the invention, an electronics box and / or a charging socket are attached to the cover, with the seal with the resistance wire arranged between the flange surfaces of the electronics box and / or the charging socket to the cover. This ensures both good visibility of an energy meter display unit located in the electronics box and free accessibility and functionality of the charging socket, as well as free movement of any socket cover, if present, since the cover is heated by the resistance wire in the immediate vicinity of these critical components.

[0018] Preferably, a groove in which the resistance wire is arranged is formed in the lid or on the free ends of the side walls of the receiving space of the base body covered by the lid or on a flange surface of the electronics box facing the lid. The resistance wire can either be simply inserted into the groove as an insulated resistance wire or inserted together with the seal. In both cases, the lid is heated over a larger section so that in particular the critical areas of the lid to be heated can be heated to the desired temperature in a short time in order to dissolve a layer of ice or snow. In a further embodiment, the groove is formed circumferentially around an open side of the receiving space of the base body, which side is closed off by the lid.Due to this circumferential design of the groove and the resistance wire, the entire lid can be heated to a desired temperature in a short time in order to free it from ice and snow.

[0019] It is particularly advantageous if, in addition to the resistance wire, a seal is arranged in the groove, sealing the gap between the base body and the cover. This allows both the cover seal and the heating element to be installed in a single assembly step.

[0020] Preferably, the resistance wire is insulated so that electrically conductive contact with the surrounding housing is avoided.

[0021] It is particularly advantageous if the resistance wire is attached using a thermally conductive adhesive. This can be done in the groove or flat against the lid. This improves heat conduction to the lid and shortens warm-up times.

[0022] In a further advantageous embodiment, the heating element extends around a receiving opening of the charging socket. This ensures the functionality of the charging socket at temperatures below freezing, as layers of ice are dissolved. This allows any existing socket cover to be easily opened, and prevents the charging socket itself from icing up, thus preventing problems when inserting the plug into the charging socket.

[0023] It is also advantageous if the heating element extends around a receiving opening in which a transmitting and receiving unit, particularly in the form of an RFID antenna, is housed. This ensures communication between the user and the charging controller or the provider's server, even in ice and snow.

[0024] Furthermore, the charging socket is preferably movable from an opening in the lid via a pivoting part, with the heating element extending around the opening from which the pivoting part is pivoted out of the lid. Such a pivoting socket has the advantage that it is easier for the user to reach and the charging socket is protected in the receiving space when not in use. The heating element melts any layer of ice that may be present in the gap between the lid and the pivoting part or prevents it from forming in the first place, ensuring functionality in all weather conditions.

[0025] To ensure compliance with legal requirements regarding the readability of the energy meter at all times, the charging unit features an energy meter with a display unit that can be read through an opening or viewing window in the lid. The opening or viewing window is at least partially enclosed by the heating element. The viewing window of the display unit thus remains visible at all times.

[0026] In a further preferred embodiment, a temperature sensor is arranged in the lid, which can be used to measure the temperature of the lid. This temperature sensor can be used to determine the outside temperature outside of heating times and thus whether ice formation is a concern. At the same time, the temperature of the lid can be measured during heating, and the heating element(s) can be regulated accordingly.

[0027] Furthermore, alternatively or additionally, a temperature sensor can be arranged on the curb, kerb or paving stone loading device, via which an outside temperature can be measured, so that control can also take place solely depending on the outside temperature.

[0028] In order to reduce power consumption, the heating element is controlled depending on the measured values ​​of the temperature sensor.

[0029] For this purpose, the temperature sensor and the heating element are electrically connected to a charge controller on the charging unit or a separate control unit. By using the charge controller on the charging unit to control the resistance wire based on the temperature sensor's measured values, additional components are eliminated. Furthermore, the temperature sensor's measured values ​​can also be used for charge control, if desired.

[0030] It is also advantageous if the heating element can be controlled based on weather data, which can be transmitted to a control unit or the heating element's charge controller via a transmitting and receiving unit in the form of a radio interface on the curb, kerb, or paving stone charging device. In this case, a temperature sensor can be omitted if necessary, or the data can be used additionally. This also enables preventative heating of the cover to prevent any ice or snow formation on the curb, kerb, or paving stone.

[0031] In an alternative to the resistance wire, a heating mat or cartridge heater can be attached to the lid as a heating element. These heating mats are typically made of a plastic with embedded wires. This allows for even, widespread heating of the lid. The cartridge heater is an electrically heated rod that can also heat the entire receiving space. Alternatively, a radiant heater, particularly an infrared heater, can be arranged in the receiving space. This generates a heat flow to the lid or radiates it onto the lid. This also allows for widespread heating of the lid.

[0032] Furthermore, it is alternatively possible to arrange guide elements in the receiving space that conduct the waste heat from a rotary actuator, a locking actuator of the charging socket, or the charging unit to the cover. For this purpose, the rotary actuator or the locking actuator can, for example, be energized without generating any movement, so that only waste heat is generated. By conducting this heat to the cover via the guide elements, targeted heating of the cover is also possible. The waste heat from the heat-generating parts of the charging unit can also be conducted to the cover via guide elements, where it is heated accordingly.

[0033] Alternatively, induction elements can be arranged on the lid, which generate induction heat in the conductive lid, which can also provide sufficient heat to dissolve layers of ice or snow.

[0034] Alternatively, a heat pump, in particular an air heat pump, is arranged in the receiving space for heating purposes.

[0035] This creates a curb, kerb, or paving stone charging device for charging the energy storage unit of an electrically powered vehicle, ensuring full functionality regardless of weather conditions and temperatures below 0°C. This heating can be applied specifically to critical areas, with very low installation effort and costs. The cover can be heated either only when needed—for example, when the pivoting part of a charging socket is already frozen and the ice needs to be melted—or temperature windows can be defined in which heating is used preventively to prevent freezing in advance.A connection to the charging unit can also be established, for example to inform the service provider's server of the current temperature of the lid or the operating status of the heater, or conversely to transmit weather data from the server to the charging unit and thus to be able to regulate the heating elements depending on these values.

[0036] A non-limiting embodiment of a curbstone, paving stone or kerbstone charging device according to the invention for charging an energy storage device of an electrically driven vehicle is described below using the example of a curbstone charging device.

[0037] Figure 1 shows a schematic diagram of a road with a limiting curb loading device in plan view.

[0038] Figure 2 shows a perspective view of a curb charging device according to the invention with heating elements shown in dashed lines in the form of a resistance wire and a fixed charging socket.

[0039] Figure 3 shows a side view of a curb charging device according to the invention with resistance wire in a sectional view.

[0040] Figure 4 shows a perspective view of a curb charging device according to the invention with heating elements shown in dashed lines in the form of a resistance wire and a pivoting charging socket.

[0041] Figure 5 shows a side view of a curb charging device according to the invention with a heating mat in a sectional view. Figure 1 shows a sidewalk 10, which is bordered on one side by a house wall 12 and on the other side by a curb edge 14, which is formed by several stone elements 16 and a curb, kerbstone, or paving stone charging device 18 according to the invention and forms a boundary to the street 19. On the side of the sidewalk 10 facing away from the curb 14 is an energy source 20 in the form of a power connection connected to the power grid. The energy source 20 is connected to the curb or kerb charging devices 18 via underground power supply cables 22.Charging sockets 24 are arranged on the curb or kerb charging devices 18, into which a plug 26 is inserted, which is connected via a cable 28 to an energy storage device 30, in particular a battery of an electrically powered vehicle 32, so that this energy storage device 30 can be charged via the energy source 20.

[0042] A curbstone, kerbstone, or paving stone loading device 18 according to the invention is shown in Figure 2. In the following, the terms "top," "bottom," "below," "above," or similar refer to the state of the curbstone or kerbstone loading devices 18 that corresponds to the state installed at the roadside. A "top" thus corresponds to the side facing away from the ground surface in the installed state.

[0043] The curbstone, kerbstone, or paving stone loading device 18 according to Figure 2 consists of a base body 34, which is made of steel, concrete, plastic, or composite materials and may contain fiber reinforcements. This base body 34 has a base 36, from which two transverse walls 38, a front wall 40, and a rear wall 42 extend upwards. These two transverse walls serve as side walls 38, 40, 42 of a receiving space 44 formed inside the base body 34. This receiving space 44 is closed by a cover 46, the outer periphery of which rests on the free, upwardly facing ends 47 of the side walls 38, 40, 42.

[0044] Arranged inside the receiving space 44 is an electronics box 48, which is fastened to the cover 46 via a flange surface 50 and in which components of a charging unit 52 are arranged. This charging unit 52 has, in addition to a charging controller 54 as a component, a combined residual current and circuit breaker 55, which is connected to an energy meter 56 with a display unit 58, which is connected to the charging socket 24 via a power contactor 59. Furthermore, a power supply unit 60 is arranged in the electronics box 48, via which power supply unit 60 the applied high-voltage is converted into a low-voltage voltage, in particular a 12V voltage. The power supply unit 60 supplies power to the charging controller 54, via which a power contactor is switched, which is also arranged in the electronics box 48.Before switching the power contactor 59 via the charging controller 54, a locking actuator 61 of the charging socket 24 must be switched, and prior to this, the user must be authenticated via a transmitting and receiving unit 62, for example in the form of an RFID antenna, which is arranged under a plastic cover 64 that closes a first opening 66 in the cover 46. Accordingly, in the present case, the charging controller 54, the combined residual current and circuit breaker 55, the energy meter 56, the power contactor 59, the power supply 60, and the transmitting and receiving unit 62 form components of the charging unit 52.

[0045] The display unit 58 of the energy meter 56 is located below a viewing window 68, which is arranged in a second opening 70 in the cover 46. A third opening 72 is located in the cover 46 for receiving the charging socket 24, which is covered by a socket cover 73, which bears against the cover 46 with a flange surface 74 and a seal 75 interposed therebetween. In an alternative embodiment, a pivoting part 76 of a pivotable charging socket 24 is arranged in this third opening 72. This pivoting part closes the third opening 72 outside of charging times and is pivoted out of the opening 72 with the charging socket 24 before the start of the charging process. The pivoting part 76 can be designed somewhat larger than the opening 72 and rest on an outer edge of the opening 72 between charging processes.For this purpose, the cover 46 and the pivoting part 76 can be made somewhat thinner in the overlapping area and have corresponding shoulders, creating a smooth surface. The pivoting process is carried out by a pivot drive 78, which in particular comprises an electric motor and whose push and pull rods are connected to the pivoting part 76.

[0046] In order to ensure that the moving parts remain movable even in the event of frost and ice formation, that the display unit 58 can be read even in snow, that the transmitting and receiving unit 62 remains accessible for radio waves, and that the charging socket 24 remains accessible and functional, a plurality of heating elements 80 are arranged on the cover 46.

[0047] It is noted that these heating elements 80 can be used either all or only one or more of these heating elements 80 in the sense of this invention.

[0048] Thus, a circumferential groove 82 is formed on the cover 46, specifically on the side of the cover 46 and in the area that rests on the ends 47 of the side walls 38, 40, 42. Arranged in this groove 82 are a first insulated electrical resistance wire 80.1 serving as a heating element 80, as well as a first circumferential seal 84 for sealing a gap 85 between the cover 46 and the side walls 38, 40, 42. The resistance wire 80.1 rests directly in the groove 82 on the cover 46, while the seal 84 rests on the ends 47 of the side walls 38, 40, 42 for sealing. The resistance wire 80.1 is attached to the cover 46 in the groove 82 using a thermally conductive adhesive. However, it would also be conceivable to integrate the resistance wire 80.1 into the seal 84.

[0049] A second electrical resistance wire 80.2 is attached to the inside of the cover 46, preferably also by means of the thermally conductive adhesive, and surrounds the viewing window 68 of the display unit 58 of the energy meter 56.

[0050] A third electrical resistance wire 80.3 is located, as shown in Figure 3, in a groove 86 on the side of the cover 46 facing the flange surface 50 of the electronics box 48, in which a seal 88 is also arranged.

[0051] A fourth electrical resistance wire 80.4 is located in the region of the cover 46 according to Figure 2, which surrounds the third opening 72, both in the variant with the pivoting part 76 of the charging socket 24 according to Figure 4 and in the fixed charging socket 24, wherein in the fixed variant the resistance wire 80.4 is clamped between the flange surface 74 of the charging socket 24 and the cover 46.

[0052] Furthermore, Figure 5 shows that a heating mat 80.5 is attached below the plastic cover 64 of the transmitting and receiving unit 62.

[0053] The heating elements 80 can thus heat all critical areas that must be accessible, visible, or movable for the charging device to function, whereby the build-up of a layer of snow and ice can be prevented either before it even forms or can be dissolved before the charging process. To control this heating, a temperature sensor 90 is arranged on the underside of the cover 46. This is electrically connected to the charging controller 54 or a separate control unit, to which the heating elements 80 are also all connected. Accordingly, the heating elements 80 can either be heated preventively if the temperature falls below a critical temperature of, for example, 4°C, or heated before the charging device is used, whereby the temperature of the cover can then be monitored in order to decide on the dissolution of the layers of snow or ice using stored characteristic maps.Furthermore, it is possible to transmit weather data to the charge controller via the transmitting and receiving unit and thereby initiate the heating, which can be checked via the temperature sensor in order to control the current supply to the heating elements accordingly.

[0054] It becomes clear that with the described curbside charging devices for charging an energy storage device of an electrically powered vehicle, a complete charging infrastructure can be created in a simple manner, which is flexible and modular in design and whose functionality is ensured in all weather conditions.

[0055] Furthermore, it should be clear that the heating elements can be adapted to the specific conditions. In particular, it is not necessary to use all of the heating elements described, as a single heating element on the lid may be sufficient. In addition to the resistance wires and heating mats described above, radiant heaters, such as infrared heaters that illuminate the lid, or heating cartridges can also be used. The swivel drive or the heat-generating components of the loading unit can also be used as heating elements, with their waste heat being directed toward the lid via conducting elements.

Claims

Pierburg GmbH, 41460 Neuss PATENT CLAIMS 1. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32), comprising a base body (34) made of a metal, concrete, natural stone, plastic or composite material, an inner receiving space (44) delimited by the base body (34) on several sides, a cover (46) by which the receiving space (44) is closed, components of a charging unit (52) arranged in the receiving space (44), a charging socket (24) which is mechanically connected at least indirectly to the cover (46), characterized in that the cover (46) can be heated via a heating element (80).

2. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 1, characterized in that the cover (46) is made of metal.

3. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 1 or 2, characterized in that a resistance wire (80.1, 80.2, 80.3, 80.4) serves as a heating element (80).

4. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of the preceding claims, characterized in that the resistance wire (80.1, 80.2, 80.3, 80.4) is integrated in a seal (75, 84, 88) which is arranged between the cover (46) and components connected to the cover (46).

5. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 4, characterized in that an electronics box (48) and / or a charging socket (24) are fastened to the cover (46), wherein the seal (75, 88) with the resistance wire (80.3, 80.4) is arranged between the flange surfaces (50, 74) of the electronics box (48) and / or the charging socket (24) to the cover (46).

6. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of the preceding claims, characterized in that a groove (82) is formed in the cover (46), on the free ends (47) of the side walls (38, 40, 42) of the receiving space (44) of the base body (34) covered by the cover (46) or on a flange surface (50) of the electronics box (48) facing the cover (46), in which groove the resistance wire (80.1) is arranged.

7. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 6, characterized in that the groove (82) is formed circumferentially around an open side of the receiving space (44) of the base body (34), which side is closed by the cover (46).

8. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 6 or 7, characterized in that in addition to the resistance wire (80.1) a seal (84) is arranged in the groove (82), via which a gap (85) between the base body (34) and the cover (46) is sealed.

9. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 3 to 8, characterized in that the resistance wire (80.1, 80.2, 80.3, 80.4) is insulated.

10. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 3 to 9, characterized in that the resistance wire (80.1, 80.2, 80.3, 80.4) is attached by means of a thermally conductive adhesive.

11. Curb, kerb or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of the preceding claims, characterized in that the heating element (80, 80.4) extends around an opening (72) for receiving the charging socket (24). Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of the preceding claims, characterized in that the heating element (80, 80.3, 80.5) extends around an opening (66) in which a transmitting and receiving unit (62) is accommodated. Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of the preceding claims, characterized in that the charging socket (24) is movable via a pivoting part (76) out of an opening (72) in the cover (46), wherein the heating element (80, 80.4) extends around the opening (72).Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of the preceding claims, characterized in that the charging unit (52) has an energy meter (56) having a display unit (58) that can be read through an opening (70) or a viewing window (68) in the cover (46), wherein the opening (70) or the viewing window (68) is at least partially surrounded by the heating element (80, 80.2). Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of the preceding claims, characterized in that a temperature sensor (90) is arranged in the cover (46), via which a temperature of the cover (46) can be measured. Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of the preceding claims, characterized in that a temperature sensor (90) is arranged on the curb, kerb, or paving stone charging device, via which an outside temperature can be measured. Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 15 or 16, characterized in that the heating element (80) is controllable depending on the measured values ​​of the temperature sensor (90).Curb, curb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of claims 15 to 17, characterized in that the temperature sensor (90) and the heating element (80) are electrically connected to a charging controller (54) of the charging unit (52) or a separate control unit. Curb, curb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of the preceding claims, characterized in that the heating element (80) is controllable as a function of weather data, which can be transmitted to the charging controller (54) or a control unit of the heating element (80) via a transmitting and receiving unit (62) of the curb, curb, or paving stone charging device (18). Curb, curb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 1 or 2, characterized in that a heating mat (80.5) or heating cartridge is attached to the cover (46) as a heating element (80). Curb, curb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 1 or 2, characterized in that a radiant heater is arranged in the receiving space (44), via which the cover (46) can be illuminated. Curb, curb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 21, characterized in that an infrared radiator is arranged in the receiving space (44) as a heating element (80), via which the cover (46) can be illuminated.Curbstone, kerbstone or paving stone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 1 or 2, characterized in that guide elements are arranged in the receiving space (44) which guide the waste heat of a pivot drive (78), a locking actuator (61) or the charging unit (52) to the cover (46). Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of claims 1 or 2, characterized in that induction elements are arranged on the cover (46), via which induction heat can be generated in the conductive cover (46). Curb, kerb, or paving stone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of claims 1 or 2, characterized in that a heat pump is arranged in the receiving space (44).

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