Kerb, paving stone or kerbstone charging device for charging an energy store of an electrically driven vehicle

Abstract

The invention relates to a kerb, paving stone or kerbstone charging device (18) for charging an energy store (30) of an electrically driven vehicle (32), having a kerb, paving stone or kerbstone body with a front wall, a rear wall, two side walls, a base and a protective cover, a receiving space being formed in the interior of the kerb, paving stone or kerbstone body, having an electrical interface unit (24) for transferring energy from the kerb, paving stone or kerbstone charging device (18) to the vehicle (32), having an energy supply cable (22), which projects into the receiving space in the kerb, paving stone or kerbstone body, and having electronic components for open-loop and closed-loop control of the charging process, the components being arranged in the receiving space in the kerb, paving stone or kerbstone body and the electrical interface unit (24) being connected to the energy supply cable (22) via the electronic components. In order to reliably protect the electronics in the kerb, paving stone or kerbstone body, the invention proposes that the electronic components are arranged in an electronics box which is dust- and liquid-tight on all sides and is arranged in the receiving space, a boundary wall of the electronics box being formed by the front wall and / or the protective cover of the kerb, paving stone or kerbstone body. A kerb, paving stone or kerbstone charging device (18), the electronics of which can be easily installed and serviced, is created in this way.

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, having a curb, paving stone or kerb body with a front wall, a rear wall, two side walls, a base and a protective cover, in the interior of which a receiving space is formed, an electrical interface unit for transmitting energy from the curb, paving stone or kerb charging device to the vehicle, a power supply cable which projects into the receiving space in the curb, paving stone or kerb body, electronic components for controlling and regulating the charging process, which components are arranged in the receiving space of the curb, paving stone or kerb element and via which components the electrical interface unit is connected to the power supply cable.

[0004] Such curb, paving, or curb charging devices are charging stations integrated into the curb, paving, or curb, to which vehicles can be connected via an electrical connection to charge their energy storage units or batteries. This particularly applies to purely electric vehicles but also 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] For example, GB 2 597 742 A proposes a vehicle charging station in which a central charging station containing the electronic components is connected to several curbs via an underground cable which extends into the curb and to a socket 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 2 592 186 A. This curb has a modular design and features a base element into which a removable receptacle can be inserted. This receptacle is therefore not fixed. Wireless telecommunications technologies and infrastructures, such as Wi-Fi, Bluetooth, or parking sensors, are integrated into this receptacle. In addition, this curb features a connection socket and optional battery packs.

[0010] Also known from DE 10 2020 205 561 A1 is a curb module comprising a receiving space in a base element, which is closed by a cover element. The receiving space accommodates an inductive charging device, a status indicator visible from the outside, a receiving and transmitting unit, a buffer storage unit, and a control unit.

[0011] The problem with these curbside charging devices, however, is that they are usually not completely self-contained, but rather require additional connections to central charging stations. Furthermore, the charging electronics are not adequately protected from dirt and moisture. Furthermore, maintenance and installation of the curbside charging devices can only be carried out on-site, which is very costly.

[0012] The challenge, therefore, is to provide a curb, paving stone, or kerb charging device for charging the energy storage unit of an electrically powered vehicle that can operate largely autonomously, is easy to install and maintain, and whose electronics are reliably protected from the elements. Material requirements should be reduced and the legibility of displays ensured. Furthermore, data reception and transmission should be improved.

[0013] This object is achieved by a curb, paving stone or kerb charging device for charging an energy storage device of an electrically powered vehicle with the features of main claim 1. The curb, paving stone or kerb charging device according to the invention for charging an energy storage device of an electrically powered vehicle has a curb, paving stone or kerb body with a front wall, a rear wall, two side walls, a base and a protective cover, in the interior of which a receiving space is formed. The protective cover and / or the front wall serve not only to delimit the receiving space but also to absorb the force generated in the event of a vehicle impact.The curb, paving stone, or kerbstone body can thus be constructed in two or three parts, with different materials such as steel, concrete, natural stone, plastic, or composite materials being used either uniformly or in various conceivable combinations. Concrete naturally also includes ultra-high-performance concrete (UHPC), fiber-reinforced concrete, or polymer concrete, in which a plastic is used as a binding agent instead of cement. Curb, paving stone, or kerbstone thus refers to all elements that form the surface of a sidewalk and its border, a paved road, driveway, parking lot, or similar area. These stones can be made of concrete, plastic, or any other suitable material.

[0014] Furthermore, the curb, paving stone, or kerb charging device has an electrical interface unit for transmitting energy from the curb, paving stone, or kerb charging device to the vehicle. This electrical interface unit is connected, for example, mechanically at least indirectly to the protective cover or to the base body and can be designed as a charging socket into which a corresponding plug can be inserted, or as an inductive pad, and can be either fixed or pivoting or extendable. A power supply cable protrudes from the outside into the receiving space in the curb, paving stone, or kerb body, in which additional electronic components for controlling and regulating the charging process are arranged. These components connect the electrical interface unit to the power supply cable.

[0015] According to the invention, the electronic components are arranged in an electronics box that is dust- and liquid-tight on all sides and is located in the receiving space, with a boundary wall of the electronics box being formed by the front wall and / or the protective cover of the curb, paving stone, or kerbstone body. It should be noted that the front wall can also be formed integrally with the protective cover, thus forming part of the removable protective cover. By using the additional dust- and liquid-tight electronics box, the penetration of water and contaminants is reliably prevented. The boundary wall formed by the protective cover or the front wall thus limits the dust- and liquid-tight electronics box towards the surface and, as part of the electronics box, can thus be detached from the rest of the curb, paving stone, or kerbstone body.The electronics box can consist of one or more materials and be manufactured in one or more pieces. In the context of this application, a dust- and liquid-tight electronics box is understood to mean a container that is impervious to liquids and solid contaminants, such as dust, in particular in accordance with IP 67 / 68 / 69, so that cable openings or interfaces of the boundary walls must be sealed accordingly. Complete encapsulation is also conceivable. Furthermore, the dust- and liquid-tight electronics box with the protective cover or front wall can be manufactured independently of the rest of the curb, paving stone, or kerbstone and pre-assembled with the electronics. This prevents damage to the electronics due to weather influences and enables installation of the electronics independently of the curb. Only the connection of the power supply cable and, if applicable, the charging socket must be carried out on site.This allows the stone body to be installed at the side of the road and later fitted with the dust- and liquid-tight electronics box, thus accommodating the electronics, in a single step. Replacing the entire electronics is also significantly simplified. This also allows for centralized maintenance of the units. The dust- and liquid-tight electronics box can be made of plastic, fiber-reinforced plastic, or metal. Mixed constructions are also possible. The pre-assembled unit can be sealed, thus ensuring tamper-proofness. Furthermore, the base body can be transported, delivered, and installed separately from the electronics.

[0016] Preferably, a flange-like support surface is formed on the side of the electronics box closed by the protective cover or front panel, to which the front panel or protective cover is attached to seal the electronics box. Accordingly, the interior of the electronics box can first be fitted with the electronics from the side closed by the protective cover or front panel, thus ensuring good accessibility. The electronics box is then completely sealed dust- and watertight by attaching the protective cover to the front panel.

[0017] In a further embodiment, the protective cover or front panel is attached to the flange-like support surface of the electronics box by screws with a circumferential seal in between. This creates a tight yet detachable connection so that, if maintenance is required, the electronics box can be removed with the protective cover or front panel, the front panel or cover can be removed, and the electronic components and seal can be replaced or inspected. After such maintenance, all functional parts are reusable.

[0018] In a further development of the invention, the circumferential seal is arranged in a groove on the protective cover or on the front wall, which is formed opposite the wall ends of the electronics box facing the protective cover or the front wall, or the seal is arranged in a groove on the wall ends of the electronics box facing the protective cover or the front wall. This prevents assembly errors and ensures a high level of tightness, as the seal is additionally compressed.

[0019] Additional tightness is achieved when the wall ends protrude into the groove and rest against the seal.

[0020] The seal is a flat seal, profile seal, or liquid seal. These seals are particularly suitable for installation on curbs and offer a high level of protection against the ingress of dirt, dust, or liquids.

[0021] As an alternative to screw fastening, the front panel or protective cover for closing the electronics box can be attached to the electronics box using a fabric or form fit. This can be achieved, for example, by welding, gluing, or clipping. Welding or gluing ensures high durability and complete sealing, reliably preventing accidental loosening. Clipping offers the advantage of very quick and easy connection. For a permanent connection, an opening for maintenance and assembly can be provided on another side of the electronics box.

[0022] Whether using a connection to the protective cover or front wall through a material fit, a force fit, a positive fit, or a friction fit, a side part of the electronics box can advantageously have an opening surrounded by a flange, through which a side wall plate for closing the electronics box is detachably fastened with a seal in between. This allows either the only or additional access for maintenance and assembly of the electronics and creates very good accessibility to the electronics box. It is particularly preferred if a second flange-like support surface is formed on the side of the electronics box opposite the protective cover or the front wall, over which a base part or a rear part of the electronics box is detachably fastened with a seal in between to close the electronics box.For example, the upper part of the electronics can be mounted in the electronics box from the protective cover side, while another part of the electronics can be attached to the bottom and pushed into the box with the bottom plate. This further improves accessibility and thus simplifies assembly. Maintenance is also made correspondingly easy, as detachable, particularly force-locking, connections can be provided.

[0023] The dust- and liquid-tight electronics box preferably has a first sealed opening through which an electrical connection between the electronic components and the power supply cable can be established via a connection contact, wherein at least the connection contact protrudes from the electronics box into the receiving space. This means that a power cable leads from the electronics box to the connection contact, which is connected to the power supply cable outside the dust- and liquid-tight electronics box. Either the connection contact itself can be arranged sealed in the opening, or the power cable is passed through the opening and the connection contact is located completely outside the dust- and liquid-tight electronics box. In either case, the power supply to the charging device is established by simply plugging in the power supply cable outside the dust- and liquid-tight electronics box.Accordingly, the dust- and liquid-tight electronics box no longer needs to be opened during assembly. The connection contact can be designed, for example, as a plug-in socket or clamp contact. The dust- and liquid-tight electronics box preferably has a second sealed opening in which the electrical interface unit is located or through which a power cable leading to the electrical interface unit is routed. The electric vehicle can be charged via the charging socket using a power cable. Accordingly, this opening serves as a second interface to the outside. The charging socket or the induction pad are, of course, also dust- and liquid-tight to the electronics box.

[0024] Furthermore, it is advantageous if the dust- and liquid-tight electronics box has a third opening closed by a dust- and liquid-tight pressure equalization membrane. This pressure equalization membrane can be designed as an IP67 membrane or with a higher IP rating and serves to ensure pressure equalization between the interior and the environment of the electronics box. These pressure differences can arise, in particular, from temperature changes within the electronics box due to heat generation of the electronic components or pivoting or lifting movements of the charging socket with resulting volume changes. Otherwise, they would lead to moisture being sucked into the electronics box through the interface seals.

[0025] Preferably, the electronics box has a first narrower section and a second wider section when viewed in the longitudinal direction of the curb, paving stone or kerb charging device, wherein the connection contact protrudes longitudinally from the wide section into a free space next to the narrower section. This means that there is a free space between the first section and the second section which corresponds at least to the thickness of the power supply cable. This allows very good accessibility for connecting the power supply cable during assembly. This also enables quick disconnection of the cable, for example for maintenance purposes. Accordingly, when leading the power supply cable through from below, space should also be left laterally between the electronics box and the edge of the receiving space for the cable to pass through.

[0026] Furthermore, a charging control unit is advantageously located in the dust- and liquid-tight electronics box. The curb, paving stone, or kerb charging device can be controlled and regulated independently, eliminating the need for central control units.

[0027] Additionally, a power contactor and a power supply are preferably located in the dust- and liquid-tight electronics box, allowing the curb, paving stone, or kerb charging device to operate independently, as all necessary electronic components are located in the dust- and liquid-tight electronics box. Of course, the term "contactor" also includes a corresponding relay.

[0028] In a further advantageous embodiment, an RFID board is arranged in the second section, opposite a viewing window in the protective cover of the dust- and liquid-tight electronics box. This ensures that the radio waves can penetrate to the outside and that authentication can be performed despite the short range. Furthermore, the viewing window can be used to visualize the authentication process.

[0029] Furthermore, it is advantageous if, in the first section opposite the protective cover, below an opening in which a radio-permeable cover is embedded in a dust- and liquid-tight manner, or in the cover itself, a transmitting and receiving unit, particularly in the form of a radio antenna, is arranged in the electronics box. This unit establishes a connection from the user to an operator's server and thus to the curb, paving stone, or kerb charging device, allowing the charging process to be started and stopped from outside. The cover can also be designed as a viewing window. The radio antenna can be, for example, a 2G, 3G, 4G, 5G, Wi-Fi, or Bluetooth antenna and can be adapted to future standard antennas.

[0030] Energy meter data can also be transmitted to the user via this interface. The placement directly below or in the lid, which can be designed as a window, enables good reception and transmission performance, allowing for authentication via an app, maintenance, or installing software updates. Furthermore, easy replacement is possible.

[0031] To complete the electronics in the electronics box, one or more of the electronic components such as surge protectors, circuit breakers and residual current devices, and control boards for sensors or actuators can be arranged in it.

[0032] Preferably, the protective cover has a viewing window in the second section, below which a display unit of an energy meter is located in the dust- and liquid-tight electronics box. The display unit is thus visible through the viewing window. This allows the user to read the amount of energy delivered at any time without tampering. The viewing window is also sealed.

[0033] In a preferred embodiment, the protective cover and / or the front wall are detachably attached to the side walls of the curb, paving stone, or kerb body, which are made integrally with the base of the curb, paving stone, or kerb body. This results in a base body consisting of two parts, the receiving space of which can be opened through the detachable wall, i.e., the protective cover or the front wall, so that the electronics box attached or closed to it can be removed and inserted with the detachable part of the curb body, either with the protective cover or with the front wall.

[0034] Furthermore, it is advantageous if an Ethernet connection is provided on the electronics box, which can be used for local load management.

[0035] This creates a curb, paving stone, or curb charging device for charging the energy storage unit of an electrically powered vehicle. The device operates completely independently and requires only a connection to a power supply cable, which is particularly easy to install. The dust- and liquid-tight electronics box allows the entire electronics to be easily pre-assembled and protected from external influences, and installed or replaced as a pre-assembled part in the stone. Damage caused by heating, pressure fluctuations, or penetrating liquids is avoided. The electronics box is therefore easy to install and replace, making it simple to maintain. Furthermore, the electronics are reliably protected from the elements.

[0036] 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 with reference to the figures using a curb charging device with a protective cover as a boundary wall of an electronics box.

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

[0038] Figure 2 shows a perspective exterior view of a curbside charging device according to the invention. Figure 3 shows a perspective side view of the electronics box and the protective cover of the curbside charging device according to the invention, viewed from below.

[0039] Figure 4 shows a side view through the electronics box and the protective cover of the curb charging device according to the invention in a longitudinal section.

[0040] Figure 5 shows a side view through the electronics box and the protective cover of the curb charging device according to the invention in a transverse section.

[0041] 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 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 10 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 charging devices 18 via underground power supply cables 22. Interface units 24 in the form of charging sockets 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.

[0042] The curb loading device 18 consists, as can be seen in Figure 2, of a curb body 34, which consists of a base body 36 and a protective cover 38. A receiving space 40 is formed inside the curb body, which is delimited by the protective cover 38 as well as a front wall 42, a rear wall 44, two side walls 46, and a base 48 of the base body 36. The base body 36 can be made of concrete or a plastic, which may contain fiber reinforcements, while the protective cover 38 is made of a high-strength material such as steel. The receiving space 40 is essentially hollow cuboid-shaped and has one side open to the surface of the sidewalk 10, which side is closed by a protective cover 38.

[0043] The protective cover 38 is fastened to the side walls 46 of the base body 36 and closes the upwardly facing, open side of the receiving space 40, in particular with the interposition of a seal 50. The protective cover 38 rests on an upper side of the base body 36 and thus on the upwardly facing ends of the side walls 46, the front wall 42 and the rear wall 44.

[0044] The protective cover 38 has a rounded impact wall 52, which covers an edge between the upper side of the base body 36 and a side surface of the base body 36 facing the street. The protective cover 38 is fastened by means of screws 54. The protective cover 38 accordingly limits the receiving space 40 formed inside the base body 36 at the top.

[0045] As can be seen in Figures 3 and 4, a dust- and liquid-tight electronics box 56 is arranged in the receiving space 40, in the interior of which electronic components 58 are arranged.

[0046] The dust- and liquid-tight electronics box 56 has, viewed in the longitudinal direction of the base body 36, a first narrower section 60 and an adjoining second, wider section 62, so that a free space 64 is formed between the front wall 42 of the curb body 34 and the electronics box 56. The power supply cable 22 is guided through this free space 64 through a hole in the floor 48. A connection contact 66 protrudes from the second section 62 of the electronics box 56 in the direction of the free space 64, so that the power supply cable can be pulled upwards through the hole from below into the receiving space 40 during assembly and is bent sideways by 90° into the free space 64 in order to be brought into a position opposite the connection contact 66, where the power supply cable 22 can be connected, for example, via a terminal or a connector socket that corresponds to the connection contact 66.

[0047] For this purpose, the connection contact 66 protrudes through a first opening 68 in the electronics box 56, which is sealed to the connection contact 66 so that no liquid, dust, or other contaminants can penetrate. This connection contact 66 accordingly supplies power to the electronic components 58 inside the dust- and liquid-tight electronics box 56 and thus also to the interface unit 24, which in the present embodiment is arranged outside the electronics box 56. In order to connect the interface unit 24 to the inside of the electronics box 56 and thus to the power supply, a second opening 72 is formed on a wall 70 of the electronics box 56 opposite the first opening 68, through which opening a power cable 74 leads from the electronics box 56 to the interface unit 24, which is designed as a charging socket.Another power cable 74 supplies power to a socket locking actuator 76 connected to the interface unit 24, which prevents the plug 26 from becoming loose during the charging process. Another power cable 74 supplies power to a flap locking actuator 78, by means of which a flap 80 closing the charging socket 24 from the sidewalk, which is hingedly attached to the protective cover 38, can be secured against opening by moving a pin into a corresponding hole in the flap 80.

[0048] A third opening 82 is also formed on the vertical wall 70 of the dust- and liquid-tight electronics box 56. A pressure equalization membrane 84 is positioned therein. This membrane allows air to enter and exit the electronics box 56, thereby equalizing a pressure difference between the interior and exterior of the dust- and liquid-tight electronics box 56, preventing liquid from being drawn in due to existing pressure differences. This pressure equalization membrane 84 seals the electronics box 56 against the ingress of dust and liquids.

[0049] The power cables (not shown) leading from the connection contact 66 into the interior of the electronics box 56 lead to a surge protection device 86. In addition, a combined residual current device and circuit breaker can be arranged in the electronics box 56.

[0050] The overvoltage protection 86 is connected to a power contactor 88 via an energy meter 90, which is connected to the interface unit 24, thereby indirectly connecting it to the power supply cable 22.

[0051] The energy meter 90 is arranged in the second section 62 directly below the protective cover 38, which has a sealed viewing window 92 directly above the energy meter 90, through which a display unit 94 of the energy meter 80 can be read.

[0052] Furthermore, a power supply 96 is supplied with power via cables. This power supply 96 is arranged in the first section 60 of the electronics box 56 and converts the applied high-voltage voltage into a low-voltage voltage, in particular a 12V voltage. The power supply 96 supplies power to a charging control unit 98, which is arranged directly next to the power supply 96 and via which the regulation and control of the charging process is carried out. This charging control unit 98 switches the power contactor 88, which is arranged on a base part 100 of the electronics box 56, in the second section 62 near the interface unit 24 below the energy meter 90.Before switching the power contactor 88 via the charging control unit 98, the socket locking actuator 76 of the interface unit 24 must be switched and, beforehand, the user must be authenticated via an RFID board 102, which is also arranged directly below the viewing window 92 of the protective cover 38 of the electronics box 56, so that visualization of the authentication via LEDs of the RFID board 102 is possible.

[0053] A residual current sensor 104 is connected between the energy meter 90 and the power contactor 88. This sensor detects any direct currents potentially triggered by a vehicle-mounted charger between the power contactor 88 and the energy meter 90. This sensor prevents alternating fault currents from being reliably detected by a residual current device, which could lead to personal injury. Accordingly, in this case, the power supply is interrupted via the charging control unit 98.

[0054] Furthermore, the protective cover 38 has an opening 106, which is closed by a radio-permeable cover 108, beneath which a transmitting and receiving unit 110, which can be designed as a radio antenna, is arranged. The charging control unit 98 also has the control boards 111 for the existing sensors and actuators, either integrated or as separate units. These can also be arranged and secured individually in the electronics box 56. Thus, a fourth sealed opening 112 is provided on the wall 70, through which a cable 113 of a temperature sensor 114 attached to the protective cover 38 protrudes from the electronics box 56. Through this opening, the temperature in the receiving space 40 and on the protective cover 38 of the curbside charging device 18 can be monitored.

[0055] If a vehicle 32 is to be charged, the user is first identified via the RFID board 102 or via a mobile phone, in conjunction with a corresponding app, and the transmitting and receiving unit 110. As a result, the charging control unit 98 releases the interface unit 24 by actuating the flap locking actuator 78, and the plug 24 can be inserted into the charging socket 24.

[0056] After plugging in the plug 26, the socket locking actuator 76 is activated before the charging process begins, preventing accidental removal of the plug 26 during the charging process, as this would endanger the user. Only after the socket locking actuator 76 is activated is the power contactor 88 activated via the charging control unit 98, allowing the charging process to begin.

[0057] The energy meter 90 has a data interface in the form of a ModBus to the charging control unit 98, so that the data from the energy meter 90 is transmitted to the charging control unit 98 during the charging process. Upon completion of the charging process, the data transmission is terminated upon receipt of an external command or upon detection of a full charge of the energy storage device 30. Accordingly, the power contactor 88 is switched via the charging control unit 98, and the socket locking actuator 76 is released, so that the plug 26 can be removed from the charging socket 24. The flap 80 of the charging socket 24 then closes, for example, by spring force, and is relocked by the flap locking actuator 76.

[0058] Via the transmitting and receiving unit 110, a connection can also be established from the user to an operator's server and thus indirectly to the curb, paving stone, or kerb charging device 18, in order to start and stop the charging process remotely. The data from the energy meter 90 can also be transmitted to the user via this unit. Various terminals 116 can also be arranged in the electronics box 56 to simplify the wiring and cabling. One of these terminals is shown as an example.

[0059] The electronics box 56 is defined by four integrally connected circumferential side panels 118, the base panel 100, and the protective cover 38, which accordingly forms a boundary wall 120 of the electronics box 56. An Ethernet port 119 is also formed on one side panel 118 of the electronics box 56.

[0060] The side parts 118 are fastened to the protective cover 38 via a flange-like support surface 122, which is formed in the region of wall ends 124 facing the protective cover 38. The side parts 118 each have recesses 126 extending axially in the direction of the protective cover 38, at the ends of which the flange-like support surface 122 has holes 128 through which screws 130 are inserted, which are screwed into corresponding threaded holes 132 on the protective cover 38 for fastening the side parts 118 to the protective cover 38. The recesses 126, on the one hand, increase the strength of the electronics box 56 and, on the other hand, create clearance for a tool for tightening the screws 130.The wall ends 124 of the side parts 118 extend axially slightly beyond the flange-like support surface 122 into a corresponding circumferential groove 134 on the underside of the protective cover 38, in which a seal 136, designed for example as a compartment seal or liquid seal, is arranged, which is pressed by the wall ends 124 in the groove 134, so that complete tightness is achieved.

[0061] In the same way, the base part 100 is attached to second wall ends 138 opposite the protective cover 38. In the area of ​​these wall ends 138, a second flange-like support surface 140 is formed, which has holes 142 corresponding to corresponding threaded holes 144 in the base part 100. A groove 146 is also formed in the base part 100, in which a second seal 148 is arranged, which is pressed by the wall ends 138 projecting beyond the second flange-like support surface 140. This also creates a tight connection between the side parts 118 and the base part 100.

[0062] Furthermore, a large opening 152 is formed on a rear part 150, which is defined by an inwardly facing flange 154. This opening 152 is also closed by a side wall plate 158, with a seal 156 interposed between it. The side wall plate 158 is attached to the flange 154 by screws (not shown) and serves as the opening 152 for equipping the interior of the electronics box 56.

[0063] A curb, paving stone or kerb loading device constructed in this way hardly changes the streetscape and is also suitable for narrow

[0064] cities with almost no additional space required.

[0065] Additional infrastructural measures are only required to a limited extent, as the 400V network is available and the curb,

[0066] Paving stone or curbstone loading device can operate almost completely independently. Nevertheless, both safety and

[0067] Communication with the user is fully ensured. With the described curbside charging device for charging a

[0068] This makes it easy to create a complete charging infrastructure for the energy storage system of an electrically powered vehicle. This infrastructure is flexible and modular in design, yet very easy to install. Damage to the electronics is largely prevented by the dust and liquid-tight electronics box. Furthermore, handling, maintenance, and installation are significantly simplified compared to conventional designs. The electronics box can be completely pre-assembled and replaced without having to remove the curb. Manufacturing and assembly costs are significantly reduced because maintenance can be carried out centrally and production can be automated. The various flange connections ensure good accessibility to the internal electronics, both for assembly and initial assembly or for replacing individual components.

[0069] Furthermore, it should be clear that the electronics can be adapted to the respective circumstances, in particular to the legal requirements of the country. The connector socket can also be equipped with different lifting, folding or pivoting mechanisms, or the interface unit can be designed as an induction pad. The structure of the curb, paving stone or kerbstone bodies and the attachment of the protective cover can also be varied. Likewise, the arrangement of the electronic components in the electronics box can be adapted to the legal requirements and external conditions. In addition to the described application in the curb, the corresponding electronics can also be installed in other paving stones for sidewalks or streets, such as curbs. Furthermore, instead of the protective cover, the front wall of the base body can also be used as the boundary wall of the electronics box.The front panel can also be made in one piece with the protective cover, so that both form the protective cover, which forms the boundary wall of the electronics box. Furthermore, the charging socket can be located inside the electronics box.

Claims

P A T E N T A N S P R Ü C H E 1. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) with a curbstone, paving stone or curbstone body (34) with a front wall (42), a rear wall (44), two side walls (46), a floor (48) and a protective cover (38), in the interior of which a receiving space (40) is formed, an electrical interface unit (24) for transmitting energy from the curbstone, paving stone or curbstone charging device (18) to the vehicle (32), a power supply cable (22) which projects into the receiving space (40) in the curbstone, paving stone or curbstone body (34), electronic components (58) for controlling and regulating the charging process, which components are arranged in the receiving space (40) of the curbstone, paving stone or curbstone body (34) and via which the electrical interface unit (24) is connected to the power supply cable (22), characterized in thatthat the electronic components (58) are arranged in an electronics box (56) which is dust- and liquid-tight on all sides and which is arranged in the receiving space (40), wherein a boundary wall (120) of the electronics box (56) is formed by the front wall (42) and / or the protective cover (38) of the curbstone, paving stone or kerbstone body (34).

2. Curb, paving stone or curb charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 1, characterized in that a flange-like support surface (122) is formed on the side of the electronics box (56) closed by the protective cover (38) or the front wall, via which the front wall (42) or the protective cover (38) is fastened to close the electronics box (56).

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 2, characterized in that the protective cover (38) or the front wall (42) is fastened to the flange-like support surface (122) of the electronics box (56) by screws (130) with the interposition of a circumferential seal (136).

4. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 3, characterized in that the circumferential seal (136) is arranged in a groove (134) on the protective cover (38) or on the front wall (42), which is formed opposite the wall ends (124) of the electronics box (56) facing the protective cover (38) or the front wall (42), or the seal (136) is formed in a groove (134) on the wall ends (124) of the electronics box (56) facing the protective cover (38) or the front wall (42).

5. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 4, characterized in that the wall ends (124) protrude into the groove (134) and rest against the seal (136).

6. 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 3 to 5, characterized in that the seal (136) is a flat seal, profile seal or a liquid seal.

7. 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 front wall (42) or the protective cover (38) for closing the electronics box (56) is fastened to the electronics box (56) in a material or form-fitting manner.

8. Curb, paving stone or kerb 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 side part (118, 150) of the electronics box (56) has an opening (152) surrounded by a flange (154), via which a side wall plate (158) for closing the electronics box (56) is detachably fastened with the interposition of a seal (156).

9. 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 on the side opposite the protective cover (38) or the front wall (42), the electronics box (56) has a second flange-like support surface (140) is formed, via which a base part (100) or a rear part (150) of the electronics box (56) is detachably fastened with the interposition of a seal (148) for closing the electronics box (56).

10. Curb, 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 dust- and liquid-tight electronics box (56) has a first sealed opening (68) through which an electrical connection of the electronic components (58) to the power supply cable (22) can be established via a connection contact (66), wherein at least the connection contact (66) protrudes from the electronics box (56) into the receiving space (40).

11. Curb, paving stone or kerb 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 dust- and liquid-tight electronics box (56) has a second sealed opening (72) in which the electrical interface unit (24) is arranged or through which a power cable (74) leading to the interface unit (24) is laid.

12. Curb, paving stone or kerb 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 dust- and liquid-tight electronics box (56) has a third opening (82) which is closed by a dust- and liquid-tight pressure equalization membrane (84).

13. Curb, paving stone or kerb charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of the preceding claims 10 to 12, characterized in that the electronics box (56) has a first narrower section (60) and a second wider section (62) viewed in the longitudinal direction of the curb, paving stone or kerb charging device (18), wherein the connection contact (66) protrudes in the longitudinal direction from the wide section (62) into the free space (64) next to the narrower section (60).

14. Curb, paving stone or curb 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 charging control unit (98) is arranged in the dust- and liquid-tight electronics box (56).

15. 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 a power contactor (88) or relay and a power supply unit (96) are arranged in the dust- and liquid-tight electronics box (56).

16. 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 13 to 15, characterized in that an RFID board (102) is arranged in the second section (62) opposite a viewing window (92) in the protective cover (38) of the dust- and liquid-tight electronics box (56).

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 13 to 16, characterized in that in the first section (60) opposite the protective cover (38) below an opening (106) in which a radio wave-permeable cover (108) is embedded in a dust- and liquid-tight manner or in the cover (108), a transmitting and receiving unit (110) is arranged in the electronics box (56).

18. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 12, characterized in that one or more of the electronic components, overvoltage protection (86) and control boards (111) for sensors (104, 114) or actuators (76, 78) are arranged in the electronics box (56).

19. Curb, paving stone or curb charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to one of claims 13 to 18, characterized in that the protective cover (38) has a viewing window (92) in the second section (62), below which a display unit (94) of an energy meter (90) arranged in the dust- and liquid-tight electronics box (56) is arranged.

20. 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 protective cover (38) or the front wall (42) are detachably attached to the side walls (46) of the kerbstone, paving stone or curbstone body (34), which are made in one piece with the base (48) of the kerbstone, paving stone or curbstone body (34).

21. Curb, paving stone or curb 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 an Ethernet connection (119) is formed on the electronics box (56).

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