Curb or paving stone charging device for charging an energy store of an electrically driven vehicle

EP4587292A1Pending Publication Date: 2025-07-23PIERBURG GMBH
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Patent Information

Application Number
EP2022792779
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2022-09-15
Publication Date
2025-07-23

AI Technical Summary

Technical Problem

Existing curb and paving stone charging devices for electric vehicles are prone to fault currents due to water ingress, especially when the socket cover is opened, leading to potential short circuits and damage from precipitation and humidity.

Method used

A curb or paving stone charging device with a design that includes a movable socket cover and a drainage system to prevent water from entering the charging socket, featuring a depression around the socket with a drain opening that directs water away from the socket, and a protective cover to absorb forces and protect electronic components.

Benefits of technology

The solution effectively prevents water from entering the charging socket, reducing the risk of fault currents and ensuring the charging system remains operational and resistant to contaminants, while maintaining a seamless walking or driving surface.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a curb or paving stone charging device (18) for charging an energy store (30) of an electrically driven vehicle (32), comprising a curb or paving stone unit (34) with a surface (42) which forms a walking surface or a driving surface in the installed state and comprising a charging socket (24) which protrudes into an opening (48) in the surface (42) and which can be covered and released via a socket cover (52) that can be moved relative to the charging socket (24). According to the invention, the surface (42) is equipped with a recess (82) which extends about the charging socket (24) and at the deepest position of which a drain opening (88) is formed that leads to a drain channel (90) leading to outside of the curb or paving stone unit (34). Thus, water is reliably prevented from penetrating the charging socket and the area lying underneath the charging socket.
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Description

[0001] DESCRIPTION

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

[0003] The invention relates to a curb, paving stone or kerb charging device for charging an energy storage device of an electrically driven vehicle with a curb, paving stone or kerb unit with a surface that forms a walking or driving surface when installed, a charging socket that projects into an opening in the surface and that can be covered and exposed via a socket cover that is movable relative to the charging socket.

[0004] Such curb, paving stone, or kerb charging devices are charging stations integrated into the curb, paving stone, or kerb, or curbs, paving stones, or kerbs that have at least one charging socket integrated into them and are connected to a central charging station. An electrical connection to an electrically powered vehicle can be established via the charging sockets to charge its energy storage device or battery. This applies in particular to purely electrically powered 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 existing parking spaces or sidewalks 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 known in which the charging devices or at least the charging sockets are integrated into the curb or the kerbstone or paving stones forming the sidewalk. In this context, it should be noted that, for the purposes of the invention, a paving stone, curbstone, or kerbstone does not necessarily have to comprise a stone element. This means that the paving stones, curbstones, or kerbstones can also be composed of different materials, such as plastic, in particular fiber-reinforced plastic, or metal, concrete, or plastics containing stones. Different parts made of different materials can also be assembled to form the paving, curbstone, or kerbstone unit.

[0008] The integration of the charging socket or the complete charging unit has the advantage that no charging stations block the sidewalk and thus spoil the visual impression. It also prevents charging cables from protruding across the sidewalk and creating tripping hazards for pedestrians. Instead, no additional space is required; instead, existing infrastructure is used. This also prevents damage to the charging infrastructure caused by vehicle accidents. For example, GB 2 572 752 A proposes a curb as a vehicle charging station. A central charging station containing the electronic components is connected via an underground cable to a charging socket integrated into the curb, via which the vehicle can be connected for charging.

[0009] A special design of such a curb with electronics for charging a vehicle is known from GB 2 591 830 A. This curb has a modular design and features a base element to which an interchangeable curb head can be inserted, which can contain electronic elements and a charging socket. This container can integrate, for example, wireless telecommunications technologies and infrastructures, such as Wi-Fi, Bluetooth, parking sensors, or even battery packs.

[0010] The problem with these modules, however, is that they are often located outdoors and are therefore exposed to the elements, but are not adequately protected against the ingress of water or dirt. In particular, precipitation, but also humid air, from which moisture can settle on the walls of the charging socket depending on the temperature, can lead to water penetrating the charging socket. This can lead to fault currents such as short circuits if the water creates a connection between two or more of the electrical contacts. Especially when lifting off a cover that closes the charging socket, water can run in a gush from the surface of the cover onto the surrounding housing and from there into the interior of the charging socket if the charging socket is not adequately protected.

[0011] The task therefore arises to provide a curb, paving stone or kerb charging device for charging an energy storage device of an electrically powered vehicle, with which fault currents caused by water flowing into the charging socket from the outside and in particular from the cover can be reliably avoided.

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

[0013] A curbstone, paving stone, or kerbstone charging device according to the invention for charging an energy storage device of an electrically powered vehicle comprises a curbstone, paving stone, or kerbstone unit with a surface that forms a walking or driving surface when installed. This unit consists in particular of several assembled individual parts, such as a base body, which can be made in particular of stone, a plastic such as fiber-reinforced plastic, concrete, and various steel parts or reinforcements. The surface, which faces geodetically upwards when installed, forms the sidewalk, a road, or a cycle path and is preferably located at the boundary edge of a road or a parking lot.Inside this curb, paving stone, or kerb unit there is at least one cable for the power supply, but various electronic components can also be located inside the unit, which can thus also serve as a self-sufficient charging station. The power supply cable is connected directly or with the interposition of further electronic components to a charging socket. The charging socket projects into an opening in the surface of the curb, paving stone, or kerb unit that forms the sidewalk or driveway and can be closed using a movable socket cover. This socket cover can, in particular by means of flaps, either conceal an interior in which the contacts of the charging socket are formed when closed, or reveal the interior of the charging socket with the contacts when opened. When such a folding mechanism is used, the socket cover is accordingly mounted on one side of the charging socket.When closed, the socket cover can accordingly form part of the walking or driving surface and accordingly fill or cover an opening in the surface of the curb, paving stone or kerbstone unit. According to the invention, a recess extending around the charging socket is formed on the surface, at the lowest position of which recess a drainage opening is formed, which leads to a drainage channel that opens outside the curb, paving stone or kerbstone unit. Thus, water that either flows laterally to the surface when the socket cover is closed or water that drips off the cover when it is opened, particularly backwards towards the joint, can be reliably drained away without having to worry about this water flowing into the charging socket and causing fault currents there.

[0014] The curbstone, paving stone, or kerbstone unit preferably has a base body in which an inner receiving space is formed, and a protective cover that closes the receiving space and on which the recess and the opening into which the charging socket protrudes are formed. The inner receiving space can serve to accommodate an electrical unit or just the power supply cable. The protective cover, which is made in particular of steel, covers this receiving space and absorbs forces, for example from parked vehicles, and directs these into the base body and into the ground. The formation of the opening through which the charging socket protrudes, as well as the water drain with the recess and the drain opening on the protective cover, significantly simplifies production.

[0015] Furthermore, it is advantageous if a side wall radially outwardly delimiting the recess completely surrounds the charging socket, so that water can be drained away from the charging socket on all sides. In a particularly preferred embodiment, the recess is designed to slope downwards on all sides toward the drain opening, so that water flowing into the recess is completely and continuously drained away, and there are no positions where water remains next to the charging socket.

[0016] The drainage channel has at least a first section formed in the protective cover. Accordingly, the protective cover forms not only the drainage opening but also at least a section of the continuing channel. This allows the water to be safely drained away from the area of ​​the underlying receiving space without the need for additional sealants.

[0017] In a further development of the invention, the drainage channel has a second section, which adjoins the first section and is formed by a groove in the base body between the protective cover and the base body. The drainage channel is located between the surface of the protective cover, which forms the walkway or driveway, and the base body. The water is thus drained to the front side toward the gutter.

[0018] When closed, the socket cover preferably covers the recess at least partially, so that during heavy rainfall, the recess is not immediately filled, but at least some of the water can be drained away via the surface of the protective cover. This reduces the amount of water flowing into the recess. Above all, this significantly reduces the risk of the drain becoming clogged by dirt.

[0019] In a further advantageous embodiment, a boundary wall delimiting the opening has a step on which the socket cover rests in the radially outer region, wherein in the region between the step and the charging socket, the socket cover is arranged at a distance from the recess and at least partially covers it. Accordingly, the socket cover has a large outer contact surface on the protective cover, whereby the forces acting on it are introduced evenly. The recess is easily covered with the exception of the gap between the socket cover and the boundary wall surface delimiting the step at the top, thus preventing the ingress of dirt. For example, only the peripheral area required for the manual opening of the socket cover can be left free.

[0020] In a further embodiment, a surface of the socket cover is arranged essentially in the same plane as the surface of the protective cover forming the walking or driving surface outside the recess. This means that the boundary wall surface radially surrounding the socket cover has the same height as the socket cover. This creates a largely smooth surface, which prevents people using the walking or driving surface from tripping. It also prevents water from flowing from the surface to the charging socket, which would be the case if it were arranged offset downwards from the rest of the surface.

[0021] Preferably, an outer wall of the charging socket delimits the recess radially inwards and has an axial height that essentially corresponds to the height of the first step. This prevents water from flowing from the recess into the charging socket. Furthermore, a largely smooth socket cover can be used, which rests simultaneously on the step and the outer wall that axially and radially delimits the charging socket, so that in the closed state the charging socket is also covered by the socket cover with as little gap as possible. A particular simplification in production results if the protective cover is designed in two parts, with a first protective cover part having the surface forming the walking or driving surface and an opening in which a second protective cover part is arranged, which forms a drainage surface of the recess.Accordingly, the first, larger protective cover section, which must also absorb the impact forces, can be manufactured as a largely smooth surface part that is also not excessively thick. This allows the charging socket to be positioned beneath the surface forming the walkway or driveway, even when the charging socket is mounted in the cover area, thus preventing it from protruding above the rest of the surface.

[0022] In the second protective cover part, a second opening is preferably formed through which the charging socket protrudes, so that the charging socket is accessible even without an extension mechanism.

[0023] In a further embodiment, the second protective cover part has a first flange surface, which is attached to the first protective cover part from the side opposite the walking or driving surface. This can be done, in particular, by means of screws. A surface seal can thus be arranged between the flange surface and the first protective cover part, which maintains the tightness of the protective cover.

[0024] The charging socket preferably has a second flange surface, which is attached to the second protective cover part from the side opposite the surface forming the sidewalk or driveway, thus ensuring the tightness of the protective cover even in the area of ​​the charging socket. For this purpose, an additional seal can be arranged between the second protective cover part and the second flange surface, preventing water from penetrating the receiving space of the paving, curb, or kerbstone unit. Furthermore, installation is simplified because the charging socket can be pre-mounted on the second protective cover part, for example, using screws.

[0025] Preferably, the side wall radially outwardly delimiting the recess is formed by the boundary wall of the opening of the first protective cover part and, in an axial extension toward the receiving space, by an outer wall of the second protective cover part. The side wall is accordingly formed by two axially adjacent sections of the first and second protective cover parts. The side wall radially delimiting the recess is thus formed, on the one hand, by the boundary wall delimiting the opening in the first protective cover part and, on the other hand, in an axial extension, by the outer wall of the second protective cover part.

[0026] The charging socket is sealed to the second protective cover part via the second flange surface, and / or the second protective cover part is sealed to the first protective cover part via the first flange surface using a flat gasket. This ensures high tightness at low cost.

[0027] It is particularly preferred if the socket cover is designed to be hinged and attached to the first protective cover part. Such a design is particularly simple in construction, easy to install, and can be operated purely manually.

[0028] In a preferred embodiment, the socket cover extends at least across the width of the charging socket in the area adjacent to a hinge, and from this area the width of the socket cover decreases continuously or remains constant towards the end remote from the hinge. This means that immediately adjacent to the hinge, which serves as a pivot, is an area of ​​the socket cover that is at least as wide as the charging socket, with the width being measured in a direction perpendicular to the direction of extension from the hinge to the opposite end of the socket cover. This ensures that no water flows from the surface of the socket cover into the charging socket when the socket cover is opened. Instead, all of the water present on the socket cover is drained away towards the hinge and into the recess, thus leading to the water drain.

[0029] Preferably, a seal is arranged on the inner area of ​​the socket cover facing the charging socket or on the outer wall radially defining the charging socket. When the socket cover is closed, this seal ensures that no water can penetrate into the charging socket's insertion opening and thus into the contacts.

[0030] Furthermore, it is advantageous if a recess is formed on the protective cover at the end remote from the hinge, through which a pin of a locking actuator for the socket cover protrudes. When closed, this pin engages with a corresponding locking opening on the underside of the socket cover. Accordingly, the charging socket can be protected against unauthorized opening.

[0031] This creates a curb, paving stone, or kerb charging device for charging an energy storage unit of an electrically powered vehicle. This reliably prevents water from penetrating both the receiving space of the curb, paving stone, or kerb unit and the charging socket itself. Furthermore, it remains highly resistant to contaminants, while any water that penetrates the area around the charging socket can be continuously drained away. Even when the socket cover is opened, the water is reliably kept away from the interior of the charging socket.

[0032] A non-limiting embodiment of a curb, paving stone or kerb 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 curb charging device with reference to the figures.

[0033] Figure 1 shows a schematic diagram of a road with a limiting curb loading device according to the invention in plan view.

[0034] Figure 2 shows a perspective side view of a section of a curb loading device according to the invention.

[0035] Figure 3 shows the perspective side view of a section of the curb loading device according to Figure 2 with the first protective cover part partially cut away.

[0036] Figure 4 shows a perspective side view of the second protective cover part from Figure 3.

[0037] Figure 1 shows a walking or driving surface 10 in the form of a sidewalk, which is bordered on one side by a house wall 12 and on the other side by a curb 14 formed by several stone elements 16 and curb charging devices 18 according to the invention, forming a boundary to the street 19. On the side of the sidewalk facing away from the curb 14, there 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 charging devices 18, into which a plug 26 is inserted. The plug 26 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.

[0038] The curb charging device 18 shown in Figures 2 and 3 consists of a curb unit 34, which has a base body 36, which is made, for example, of concrete or plastic and may have fiber reinforcements or reinforcements, and in which a receiving space 38 is formed, into which at least the power supply cable 22 protrudes, but various electronic components for charging can also be arranged. The receiving space 38 can, in particular, be essentially hollow cuboid-shaped and has one side open to the surface of the sidewalk 10, which is closed by a protective cover 40, the outward-facing surface 42 of which forms the outer part of the walking or driving surface 10.

[0039] The protective cover 40, which is made in particular of steel, is attached to the base body 36 or a receiving container (not shown) arranged in the receiving space 38 and closes the upwardly facing, open side of the receiving space 38, in particular with the interposition of a seal (not shown). In addition, the protective cover 40 also rests on an upper side of the base body 36 and, viewed in the longitudinal direction, also extends over the ends of the receiving space 38.

[0040] The protective cover 40 has a rounded impact wall 44, which covers an edge between the top of the base body 36 and a side surface 46 of the base body 36 facing the street. The protective cover 40 can be attached using screws (not shown). The protective cover 40 limits the receiving space 38 upwards to the walking or driving surface 10.

[0041] The protective cover 40 has an opening 48 into which the charging socket 24 with its contacts 50 protrudes from the receiving space 38 toward the surface 42. The charging socket 24 is closed to the surface 42 by a hinged socket cover 52. This socket cover 52 is connected to the protective cover 40 via a hinge 54 and, when closing the charging socket 24, rests with its outer edge region 56 on a step 58 on the protective cover 40, which is formed on a radial boundary wall 60 of the opening 48. Accordingly, the opening 48 tapers towards the receiving space 38 through the step 58. The protective cover 40 has the same height in this radially outer region as the section 62 of the boundary wall 60 formed above the step 58, so that a surface 63 of the socket cover 52 essentially forms a common plane with a surface 42 of the protective cover 40 and thus forms part of the walking or driving surface 10.Except in the area of ​​the socket cover 52 opposite the hinge, section 62 of boundary wall 60 has only a gap to the outer circumference of the socket cover 52. In the inner area facing the charging socket 24, the socket cover 52 has a projection 66 which has essentially the same radial extent as the section of the charging socket 24 projecting into the opening 48, so that this part is placed sealingly on the charging socket 24 when the latter is closed. Of course, the height of the charging socket 24 relative to the socket cover 52 and the height of the step 58 must be coordinated accordingly. A seal 70 can also be provided in this area on the socket cover 52 or, as shown in Figures 2 and 3, on an outer wall 68 radially delimiting the charging socket 24, in order to prevent water from penetrating the charging socket 24 when the latter is closed.The socket cover 52 has its greatest width b in a region 72 adjacent to the hinge 54, wherein the width b is measured in a direction parallel to the hinge 54. With this width b, it extends approximately to the center of the charging socket 24, from where it tapers with increasing distance from the hinge 54 to the end 74 remote from the hinge 54.

[0042] At this distal end 74, the socket cover 52 no longer rests on the step 58, but is spaced apart from the protective cover 40 to allow the socket cover 52 to be grasped from below and opened manually. For this purpose, a recess 76 is formed at this end 74 on the protective cover 40, through which a pin 78 of a locking actuator for the socket cover 52 protrudes. When closed, the locking actuator engages in a corresponding locking opening 80 on the underside of the socket cover 52, preventing it from being opened without prior authentication. Once authentication has been completed, the pin 78 is extended from the locking opening, and the socket cover 52 can be opened by the user.

[0043] As already described above, the charging socket 24 itself is located below the surface 42 in order not to protrude above the surface 42 and to be able to arrange the socket cover 52 above the charging socket 24, so that normally there would be a risk of water ingress, at least when the socket cover 52 is opened.

[0044] For this reason, a recess 82 is formed in the protective cover 40, which completely radially surrounds the outer wall 68 of the charging socket 24 and extends below the hinge 54 and up to the step 58, as well as at the end 74 remote from the hinge 54 up to the recess 76. The recess is delimited radially outwards by a side wall 84 and radially inwards by the outer wall 68 of the charging socket 24. The recess 82 has an upwardly directed drainage surface 86, which is formed so as to slope downwards towards a drainage opening 88 in the side wall 84. This drainage opening 88 is accordingly located at the lowest point of the recess 82 and opens into a drainage channel 90, which is divided into two sections.The first section 92 is formed as a channel on the protective cover 40 and is extended in the second section 94 by a groove 96 in the base body 36, so that the second section 94 of the drain channel 90 is formed between the protective cover 40 and the base body 36.

[0045] To simplify production, the protective cover 40 is designed in two parts, wherein a first protective cover part 98 forms the surface 42 forming the walking or driving surface and has the opening 48 in which a second protective cover part 100 is arranged, which has an outer first flange surface 102 with which the second protective cover part 100 is screwed from below to the first protective cover part 98 with the interposition of an invisible flat seal.

[0046] This second protective cover part 100 is shown in Figure 4. It has a second opening 106 through which the charging socket 24 protrudes. This second opening has a second flange surface 108 that is made in one piece with the outer wall 68 of the charging socket 24 and with which the charging socket 24 is screwed from below against the second protective cover part 100 with the interposition of a second flat seal 110. Furthermore, the sloping recess 82 with its drainage surface 86 and the first section 92 of the drainage channel 90 are formed on this second protective cover part 100.

[0047] The second protective cover part 100 is delimited radially outwards by an outer wall 112, from which the first flange surface 102 extends outwards and which, together with the boundary wall 60 of the first opening 48 in the first protective cover part 98, in which the step 58 is formed, forms the side wall 84 delimiting the recess 82 radially outwards.

[0048] In the closed state, water only enters the recess through any small gaps between the step 58 and the socket cover 52 and via the recess 76 and is there discharged forward through the drain channel 90 by the drain surface 86 of the recess 82 which slopes towards the drain channel 90.

[0049] If the socket cover 52 is to be opened to start a charging process, water may be present on the surface 63 of the socket cover 52, which runs off in the direction of gravity when it is opened. However, this water is drained rearward in the direction of the hinge 54 by the greater width b of the socket cover 52 in the area 72 facing the hinge 54 and thus cannot enter the charging socket 24. From here, the water, as well as any water flowing out laterally, flows into the recess 82 and is accordingly also drained away from the area of ​​the charging socket 24, so that it is reliably protected against water ingress.

[0050] This creates a design that ensures water drainage from the area surrounding the charging socket, both when the charging socket is closed and during the opening process, and also prevents water from entering the charging socket. Furthermore, this water drain is resistant to contamination and allows for easy installation and manufacture of the water drain and attachment of the charging socket to the protective cover.

[0051] It should be clear that various design changes are possible compared to the described embodiment. For example, the protective cover can be constructed in one or more parts, or other mechanisms can be used to open the charging socket. In particular, it is also conceivable to extend the charging socket electrically or open the socket cover electrically.

Claims

Pierburg GmbH PATENT CLAIMS 1. Curb, paving stone or kerb charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) with a curb, paving stone or kerb unit (34) with a surface (42) forming a walking or driving surface when installed, a charging socket (24) which projects into an opening (48) in the surface (42) and can be covered and exposed via a socket cover (52) which is movable relative to the charging socket (24), characterized in that a recess (82) extending around the charging socket (24) is formed on the surface (42), at the lowest position of which recess a drainage opening (88) is formed which leads to a drainage channel (90) which opens outside the curb, paving stone or kerb unit (34).

2. Curbstone, paving stone or kerbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 1, characterized in that the curbstone, paving stone or kerbstone unit (34) has a base body (36) in which an inner receiving space (38) is formed, and a protective cover (40) which closes the receiving space (38) and on which the recess (82) and the opening (48) into which the charging socket (24) projects are formed.

3. Curbstone, paving stone or curbstone 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 side wall (84) radially outwardly delimiting the recess (82) completely surrounds the charging socket (24).

4. Curbstone, paving stone or curbstone 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 recess (82) is designed to slope downwards on all sides towards the discharge opening (88).

5. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of the preceding claims 2 to 4, characterized in that the drain channel (90) has at least a first section (92) which is formed in the protective cover (40).

6. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 5, characterized in that the drain channel (90) has a second section (94) which adjoins the first section (92) and which is formed by a groove (96) in the base body (36) between the protective cover (40) and the base body (36). Curbstone, paving stone, or kerbstone 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 socket cover (52) at least partially covers the recess (82) circumferentially when closed. Curbstone, paving stone, or kerbstone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of claims 3 to 7, characterized in that a radial boundary wall (60) of the opening (48) has a step (58) on which the socket cover (52) rests in the radially outer region, wherein in the region between the step (58) and the charging socket (24), the socket cover (52) is arranged at a distance from the recess (82) and at least partially covers it.Curbstone, paving stone, or curbstone 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 surface (63) of the socket cover (52) is arranged substantially in the same plane as the surface (42) of the protective cover (40) forming the walking or driving surface outside the recess (82). Curbstone, paving stone, or curbstone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 8 or 9, characterized in that. an outer wall (68) of the charging socket (24) delimits the recess (82) radially inwardly and has an axial height which substantially corresponds to the height of the first step (58).

11. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 8 to 10, characterized in that the protective cover (40) is designed in two parts, wherein a first protective cover part (98) has the surface (42) forming the walking surface or driving surface and the opening (48) in which a second protective cover part (100) is arranged, which forms a drainage surface (86) of the recess (82).

12. Curb, paving stone or kerb charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 11, characterized in that a second opening (106) is formed in the second protective cover part (100), through which opening the charging socket (24) projects.

13. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 11 or 12, characterized in that the second protective cover part (100) has a first flange surface (102) which is fastened to the first protective cover part (98) from the side opposite the surface (42) forming the walking or driving surface.

14. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 11 to 13, characterized in that the charging socket (24) has a second flange surface (108) which is fastened to the second protective cover part (100) from the side opposite to the surface (42) forming the sidewalk or driveway.

15. Curbstone, paving stone or kerbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 11 to 14, characterized in that the side wall (84) delimiting the recess (82) radially outwardly is formed by the boundary wall (60) of the opening (48) of the first protective cover part (98) and in axial extension in the direction of the receiving space (38) by an outer wall (112) of the second protective cover part (100).

16. Curbstone, paving stone or kerbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 13 to 15, characterized in that the charging socket (24) is sealed to the second protective cover part (100) via the second flange surface (108) and / or the second protective cover part (100) is sealed to the first protective cover part (98) via the first flange surface (102) by means of a flat seal (110).

17. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 11 to 16, characterized in that the socket cover (52) is designed to be foldable and is fastened to the first protective cover part (98). Curb, paving stone, or curb charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to one of claims 11 to 17, characterized in that the socket cover (52) extends at least over the width (b) of the charging socket (24) in the region (72) adjoining a hinge (54), and from this region (72) the width (b) of the socket cover (52) decreases continuously or remains constant in the direction of the end (74) remote from the hinge (54).Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 10 to 18, characterized in that a seal (70) facing the socket cover is arranged on the inner region of the socket cover (52) facing the charging socket (24) or on the outer wall (68) radially delimiting the charging socket (24). Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 11 to 17, characterized in that at the end (74) of the socket cover (52) remote from the hinge (54) on the protective cover (40) a recess (76) is formed through which a pin (78) of a locking actuator for the socket cover (52) projects, which in the closed state engages in a corresponding closure opening (80) on the underside of the socket cover (52).