Curb or paving stone charging device for charging an energy store of an electrically driven vehicle
Patent Information
- Application Number
- EP2022761552
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-06-29
- Filing Date
- 2022-08-09
- Publication Date
- 2025-05-07
Smart Images
Figure 1.1
Abstract
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 element which has a receiving space inside which is closed by means of a protective cover, a charging socket which is arranged on the curb, paving stone or kerb element, a power supply cable which projects into the receiving space in the curb, paving stone or kerb element, electronic components which are arranged in the receiving space of the curb, paving stone or kerb element and via which the charging socket 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 this curb module, however, is that the electronics are not adequately protected against water ingress. Furthermore, connecting the power cable is difficult due to its poor accessibility. Accordingly, maintenance and installation of the curb module are challenging.
[0012] 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, which can operate largely autonomously, is easy to install and maintain and whose electronics are reliably protected from the effects of the weather.
[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 having the features of main claim 1.
[0014] A curb, paving stone, or kerb charging device according to the invention for charging an energy storage device of an electrically powered vehicle comprises a curb, paving stone, or kerb element having an internal receiving space closed by a protective cover that, on the one hand, delimits the space and, on the other hand, can absorb an impact from vehicles. Furthermore, the curb, paving stone, or kerb charging device comprises a charging socket, which can be designed either as a plug socket or as an inductively operating charging socket, which is arranged on the curb, paving stone, or kerb element and via which a vehicle can be connected to the charging device or coupled to it.A power supply cable extends into the receiving space in the curb, paving stone, or kerb element, in which electronic components are arranged and via which the charging socket is connected to the power supply cable, thus enabling the most self-sufficient use of the curb as a charging device. According to the invention, the electronic components are arranged in an electronics box that is liquid- and dust-tight on all sides. The electronics box is located in the receiving space and has a boundary wall that limits the electronics box in the direction of the protective cover, which is therefore usually arranged opposite the protective cover. The use of the additional dust- and liquid-tight electronics box reliably prevents the penetration of water and contaminants.The boundary wall facing the protective cover thus defines the surface of the dust- and liquid-tight electronics box. This boundary wall does not have to be flat, but can have various projections or recesses. The other, usually five, boundary walls, which define the bottom and sides of the dust- and liquid-tight electronics box, can also have various shapes, but are usually designed as flat, straight surfaces. The electronics box can be made of one or more materials and 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 sealed against liquids and solid contaminants, such as dust, in accordance with IP 68 / 69, so that cable passages or interfaces of the boundary walls must be sealed accordingly. Complete filling is also conceivable.Furthermore, the dust- and liquid-tight electronics box can be manufactured independently of the rest of the curb and pre-assembled with the electronics. This prevents damage to the electronics due to weather influences and allows the electronics to be installed independently of the curb. Only the connection of the power supply cable and, if necessary, the charging socket must be made on-site. This allows the curb to be installed at the side of the road and later fitted with the dust- and liquid-tight electronics box and thus with the electronics in a single step. Replacing the entire electronics is also significantly simplified. This also enables 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 term curb, paving stone or kerbstone refers to all elements that form the surface of a sidewalk and its border, a paved road, driveway, parking lot or similar, whereby these stones can be made of concrete, plastic or any other suitable material.
[0015] 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 and a power cable, with at least the connection contact protruding 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 within the opening, or the power cable is routed through the opening, leaving the connection contact completely outside the dust- and liquid-tight electronics box.In any case, the charging device's power supply is established by simply plugging in the power cable outside the dust- and liquid-tight electronics box. Accordingly, the dust- and liquid-tight electronics box no longer needs to be opened during installation. The connection contact can be designed as a plug-in socket or clamp contact, for example.
[0016] The dust- and liquid-tight electronics box preferably has a second sealed opening in which the charging socket is located or through which a power cable leading to the charging socket 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 is, of course, also dust- and liquid-tight to the electronics box.
[0017] 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 IP68 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.
[0018] In a particularly preferred embodiment, the connection contact is arranged between the protective cover and a first section of the boundary wall of the dust- and liquid-tight electronics box, which defines the dust- and liquid-tight electronics box in the direction of the protective cover. This means that there is a gap between the first section of the boundary wall and the protective cover that corresponds at least to the thickness of the power supply cable. This allows very good accessibility for connecting the power supply cable during assembly. The entire electronics can first be inserted into the receiving space, and then the power supply cable can be connected from above. This also enables quick removal of the cable, for example, for maintenance purposes.Accordingly, when routing the power supply cable from below, space should also be left on the sides between the electronics box and the edge of the recording space to allow the cable to pass through.
[0019] Preferably, the boundary wall bordering the dust- and liquid-tight electronics box toward the protective cover has a second section offset from the first section toward the protective cover, with which the dust- and liquid-tight electronics box is attached to the protective cover. This can be done with a seal in between. This secures the dust- and liquid-tight electronics box in the receiving space and prevents displacement of the electronics box, which could lead to the cables becoming loose.
[0020] An RFID board is advantageously arranged on this second section of the boundary wall of the dust- and liquid-tight electronics box, which extends toward the protective cover, opposite a viewing window in the protective cover. This ensures that the radio waves can penetrate to the outside and that authentication can be performed despite the short range. Furthermore, visualization during authentication can be performed via viewing windows. Preferably, an inspection opening is formed on the protective cover, which can be closed by a maintenance cover, so that maintenance work or the connection of the power supply cable can be performed via the maintenance cover without having to open the rest of the charging device.
[0021] Accordingly, the connection contact for contacting the power supply cable is arranged between the maintenance cover in the protective cover and the first section of the boundary wall of the dust and liquid-tight electronics box, so that the
[0022] Power supply can be connected and disconnected for maintenance.
[0023] It is also advantageous if a fourth opening is formed on the first section of the boundary wall, which opening is sealed by a rubber lip, wherein a residual current device and / or a circuit breaker is arranged adjacent to the first section of the boundary wall inside the dust- and liquid-tight electronics box, which can be switched via the rubber lip and is electrically connected to the connection contact. Accordingly, the residual current device and / or the circuit breaker can be operated, i.e. switched on and off, via the maintenance cover. Nevertheless, a seal for encapsulating the electronics box is still provided. The necessary cable lengths are reduced because the switch can be connected directly to the connection contact.
[0024] The residual current device and / or the miniature circuit breaker are preferably located adjacent to the pressure equalization membrane, as this device generates the greatest amount of waste heat in the system, which can then be dissipated via the membrane. A transmitting and receiving unit, particularly in the form of a radio antenna, is preferably located directly in the maintenance cover or protective cover. This unit establishes a connection from the user to an operator's server and thus to the curbside, paving stone, or kerbstone charging device, allowing the charging process to be started and stopped remotely. Data from an energy meter can also be transmitted to the user via this antenna. The arrangement in the maintenance cover enables good reception and transmission performance, allowing authentication via an app, maintenance, or the installation of software updates. Furthermore, easy replacement is possible.
[0025] In an advantageous embodiment, the protective cover has a viewing opening, and the dust- and liquid-tight electronics box in the second section has a viewing window located opposite the viewing opening. An energy meter is located in the dust- and liquid-tight electronics box, the display unit of which is visible through the viewing window and the viewing opening. Thus, the amount of energy delivered can be read by the user at any time without tampering. The viewing window is also sealed. The viewing opening in the protective cover can also have a sealed window.
[0026] The energy meter is located adjacent to the residual current device and / or the circuit breaker and thus in the energy flow of the electronics, which minimizes existing cable lengths.
[0027] A power contactor, a charging controller, 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. The power contactor is also located adjacent to the energy meter. It can be positioned, in particular, on the side of the energy meter opposite the residual current device. This design again allows for short cable lengths, as the electronic components are arranged in relation to each other in the energy flow.
[0028] In a special design, an actuator control unit is located in the dust- and liquid-tight electronics box, which is connected to an actuator for actuating a lifting or pivoting mechanism of the charging socket. The actuator can, in particular, comprise an electric motor. Accordingly, actuation also occurs from within the dust- and liquid-tight electronics box and can be pre-assembled regardless of the charging socket's layout.
[0029] To simplify the installation of electronic components in the dust- and liquid-tight electronics box, one or more of the electronic components are mounted on grounded DIN rails. These can be arranged both vertically and horizontally. Grounding the DIN rails eliminates the need for separate grounding of the electronic components attached to them.
[0030] The curb, paving stone, or kerb element can also have a receptacle, which is closed by the protective cover and houses the dust- and liquid-tight electronics box. This simplifies the attachment of the dust- and liquid-tight electronics box within the stone and, when placed at the rear of the curb, allows for effective heat dissipation into the ground. The protective cover can be easily attached to this receptacle. Furthermore, the receptacle can significantly increase the stability of a curb with a receptacle when sturdy materials such as steel or fiber-reinforced plastic are used.
[0031] It is particularly preferred if the dust- and liquid-tight electronics box has a third section that can be moved relative to the second section by means of the lifting or pivoting mechanism, wherein the movement of the third section relative to the adjoining section of the dust- and liquid-tight electronics box can be compensated for by means of a sealed movement-compensating element, such as a bellows section, arranged between the third section and the adjoining section. The bellows is tightly attached, on the one hand, to the second section of the dust- and liquid-tight electronics box and, on the other hand, to the part of the lifting or pivoting mechanism that supports the charging socket. This part is also encapsulated in all other directions, thus preventing water penetration.
[0032] This creates a curb, paving stone, or curb charging device for charging the energy storage unit of an electrically powered vehicle. The device is completely self-sufficient 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. Because the electronic components are arranged in the energy flow, the required installation space and existing cable lengths can be reduced.
[0033] 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.
[0034] Figure 1 shows a schematic diagram of a road with a limiting curb loading device according to the invention in plan view.
[0035] Figure 2 shows a perspective side view of a curbstone, paving stone or kerbstone loading device according to the invention with the side cover open.
[0036] Figure 3 shows a perspective side view of an alternative curbstone, paving stone or kerbstone loading device according to the invention with the side cover open.
[0037] 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 or kerb 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 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. 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 curbstone, paving stone, or kerbstone loading device 18 consists of a curbstone, paving stone, or kerbstone element 34, which consists of a base body 36 made of concrete or a plastic, which may contain fiber reinforcements, and a receiving container 38, in particular made of steel, which defines a receiving space 40. The receiving container 38 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 42.
[0039] The protective cover 42, which is made in particular of steel, is attached to the base body 36 and / or the receiving container 38 and closes the upwardly facing, open side of the receiving container 38, in particular with the interposition of a seal, which is not shown. In addition, the protective cover 42 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 container 38.
[0040] The protective cover 42 has a rounded impact wall 44, 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 42 can be attached using screws 46. The protective cover 42 accordingly limits the receiving space 40 formed inside the receiving container 38 and thus inside the curb element 34.
[0041] As can be seen in Figures 2 and 3, an additional dust- and liquid-tight electronics box 48 is arranged inside the receiving container 38, in the interior of which electronic components 50 are arranged.
[0042] The dust- and liquid-tight electronics box 48 is designed to be somewhat narrower on a first side 52, so that a first free space 54 is created between the receiving container 38 and the dust- and liquid-tight electronics box 48, which first free space 54 faces the street 19, but could also face the sidewalk 10 and through which the power supply cable 22 is guided from below.This is pulled through a hole (not visible) in a base of the curb element 34 from below through the curb element 34 into the receiving space 40 and guided upwards and to the side into a second free space 56 between the protective cover 42 and a boundary wall 58 which delimits the dust- and liquid-tight electronics box 48 in the direction of the protective cover 42, which boundary wall 58 has a corresponding distance from the protective cover 42 in this first section 60 and is arranged directly opposite the protective cover 42 in the adjoining second section 62 and is fastened to it by means of screws.
[0043] A first opening 66 is formed on a wall 64 of the dust- and liquid-tight electronics box 48 that vertically defines the second free space 56. This opening is visible only in Figure 3. A connection contact 68 extends through this opening. The connection contact 68 is connected to the power supply cable 22 and can be designed as a terminal or connector socket. The connection contact 68 is sealed in the first opening 66 so that no liquid, dust, or other contaminants can penetrate.This connection contact 68 supplies power to the electronic components 50 inside the dust- and liquid-tight electronics box 48 and thus also to the charging socket 24, which, as shown in Figure 2, is either arranged in a sealed manner in a second opening 70 of the dust- and liquid-tight electronics box 48 or, as shown in Figure 3, is arranged outside the electronics box 48, so that the second opening 70 merely serves to conduct an electrical line to the charging socket 24 in a sealed manner.
[0044] On the vertical wall 71 opposite the vertically defining wall 64, a third opening 72 is formed on the dust- and liquid-tight electronics box 48, in which a pressure equalization membrane 74 is placed, through which air can enter and exit the electronics box 48, whereby a pressure difference between the interior and the exterior of the dust- and liquid-tight electronics box 48 can be equalized, so that no liquid can penetrate due to existing pressure differences.
[0045] The power cables 76 extending from the connection contact 68 lead to a combined residual current and circuit breaker 78, which can also be implemented as individual switches. This is arranged directly below the boundary wall 58 in the first section 60, where a fourth opening 77 is formed. This opening is closed by a waterproof rubber lip 75, via which the residual current and circuit breaker 78 can be actuated or reset from the first free space 54.For this purpose, a maintenance cover 79, which is only shown in Figure 3, is formed on the protective cover 42 opposite the first section 60 of the boundary wall 58 delimiting the electronics box 48 in the direction of the protective cover 42, which closes an inspection opening 81 shown open in Figure 2, via which, on the one hand, the connection of the power supply cable 22 can be made and, on the other hand, the residual current circuit breaker 78 can be actuated without having to remove the electronics box 48.
[0046] This residual current and circuit breaker 78 is connected to an energy meter 80, which is connected to the charging socket 24 via further power cables (not shown) with the interposition of a power contactor 82, whereby the latter is indirectly connected to the power supply cable 22.
[0047] The energy meter 80 is arranged in the immediate vicinity of the residual current device and circuit breaker 78 in the second section 62 near the vertical wall 64, directly below the boundary wall 58, which has a viewing window 83 directly above the energy meter 80, through which a display unit 84 of the energy meter 80 can be read. For this purpose, the protective cover 42 has a viewing opening 86 above and opposite the viewing window 83. For easy grounding and fastening, the energy meter 80 and the residual current device and circuit breaker 78 are mounted on top-hat rails 88, which in turn are arranged on a bracket 90, which is only shown in Figure 2 and via which the grounding to the ground takes place.
[0048] Furthermore, a power supply unit 92 is supplied with power via a line with a line fuse. This power supply unit 92 is located on the floor of the first section 60 of the electronics box 48 and converts the applied high-voltage voltage into a low-voltage voltage, in particular a 12V voltage. The power supply unit 92 supplies power to a charging controller 94, which is located directly next to the power supply unit 92 and via which the regulation and control of the charging process is carried out. This charging controller 94 switches a power contactor 96, which is also located on the floor of the electronics box 48, but in the second section 62 near the charging socket 24.Before switching the power contactor 96 via the charging controller 94, a locking actuator 98 of the charging socket 24 must be switched and, beforehand, the user must be authenticated via an RFID board 100, which is arranged directly below a viewing window 102 on the boundary wall 58 of the electronics box 48 and in the protective cover 42, so that visualization of the authentication via LEDs of the RFID board 100 is possible.
[0049] A residual current sensor 103 is connected between the power contactor 96 and the energy meter 80. This sensor detects direct currents potentially triggered by a vehicle-mounted charger between the power contactor 96 and the energy meter 80 and prevents alternating fault currents from being detected insufficiently by the residual current device 78, which could lead to personal injury. Accordingly, in this case, the power supply via the charging controller 94 is interrupted.
[0050] The locking actuator 98 is located on the charging socket 24 and, in the embodiment according to Figure 3, is thus arranged outside the electronics box 48, which has a side wall 104 with the second opening 70, which is also sealed and via which the charging socket 24 and the locking actuator 98 are connected to the power contactor 96 and the charging controller 94.
[0051] In the embodiment according to Figure 2, the charging socket 24 with the locking actuator 98 is located within the electronics box 48, which is here extended by a third section 106 designed as a quarter circle, on whose curved side surface 108 the second opening 70 for arranging the charging socket 24 is formed and whose two quarter-circle-shaped side surfaces 110 are closed. The two side surfaces 110 are connected to one another by a cover surface 112, which rests on a corresponding protective cover opening 114 when the charging device 18 is not in use. The open side of the quarter-circle-shaped third section 106 is circumferentially connected to a movement compensation element 116 designed as a bellows, which is connected on its opposite side to the second section 62 of the electronics box 48 and thus forms part of the electronics box 48.Inside the third section 106, in addition to the charging socket 24 with the locking actuator 98, there is also a DC motor as actuator 118 with a spindle drive, via which the third section 106 can be rotated relative to the base body 36 of the curb element 34 and thus relative to the first and second sections 60, 62 of the electronics box 48 around the radius center of the quarter-circle-shaped third section 106. Control is via an actuator controller 120, which is arranged in the second section 62 opposite the DC motor 118, but could also be integrated into the charging controller 94. Detection of a fully extended state of the charging socket 24 can also be used as a criterion for switching the contactor 96.
[0052] Furthermore, a transmitting and receiving unit 122, which can be designed as a radio antenna, is arranged in the maintenance cover 79. Its connecting cable leads through a further sealed opening 123 to the charging controller 94 in the electronics box 48. This transmitting and receiving unit 122 can also be arranged, for example, in the protective cover 42.
[0053] If a vehicle is to be charged, the user is first identified, for example, by their vehicle or similar device, via the RFID board 100 or via a mobile phone, a corresponding app, and the transmitting and receiving unit 122. In the embodiment shown in Figure 2, the charging controller 94 thereby activates the actuator or motor controller 120, which serves to control the DC motor 118 of the lifting or pivoting mechanism for pivoting the charging socket 24 and is accordingly also connected to the charging controller 94. Accordingly, the charging socket 24 is extended so that the plug 26 can be inserted.For this purpose, the actuator 118, which has the DC motor and is supplied with low voltage via the actuator controller 120 and the power supply unit 92 connected to it, has a position feedback unit, for example in the form of a magnetoresistive sensor interacting with a permanent magnet or a light barrier, via which the position of the lifting mechanism can be detected so that the extension process is completed when a defined end position is reached. In both embodiments, after the plug 26 is inserted, the locking actuator 98 is switched before the start of the charging process, thereby preventing an unintentional removal of the plug 26 during the charging process, as this would endanger the user. Only after the locking actuator 98 is switched is the power contactor 96 switched via the charging controller 94, so that the charging process can begin.
[0054] The energy meter 80 has a data interface in the form of a ModBus to the charging controller 94, so that the data from the energy meter 80 is transmitted to the charging controller 94 during the charging process and terminated upon completion of the charging process due to an external command or the detection of a full charge of the energy storage device 30. Accordingly, the power contactor 96 is switched via the charging controller 94 and the locking actuator 98 is released so that the plug 26 can be removed from the charging socket 24. The cover of the charging socket 24 then either closes, for example, by spring force, or the pivoting mechanism is actuated via the DC motor 118 and the charging socket 24 is retracted.
[0055] Via the transmitting and receiving unit 122, a connection can also be established from the user to an operator's server and thus 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 80 can also be transmitted to the user via this unit.
[0056] To simplify wiring, various terminals 124 can also be arranged in the electronics box 48, one of which is shown as an example. Furthermore, to increase functional reliability, sensors can be arranged in the electronics box 48, for example, to determine temperature and / or humidity. A parking sensor can also be used to determine whether a vehicle 32 is ready for charging and whether the corresponding parking space is accessible.
[0057] The highly heat-generating electronic components 50, in particular the charging controller 94, the contactor 96, or the residual current and circuit breaker 78, are located over a large area on the side of the electronics box 48 facing the sidewalk 10. This side is closed by a cover extending over the first and second sections 60, 62, so that all electronic components 50 can be conveniently installed from this side. This cover is not shown in the figures, but is attached to the flange surface 126 shown, optionally with a seal in between, and can of course also be formed on the side facing the street.Thus, when assembled, the cover or the opposite wall of the electronics box 48 rests against the rear wall of the receiving container 38, allowing heat to be dissipated to the soil behind it via the cover or the opposite wall and the rear wall of the container. Heat is also dissipated into the soil via the lower wall and the bottom of the container.
[0058] In addition, a grounding pin (not shown in the drawings) is preferably provided on the side wall of the electronics box 48 facing the street, via which the electronics box can be connected to a grounding rod by means of a grounding cable.
[0059] A curb, paving stone, or kerb charging device constructed in this way barely alters the streetscape and can be installed even in narrow cities with virtually no additional space required. Additional infrastructure measures are not required, as the 400V grid is available and the curb, paving stone, or kerb charging device can operate almost completely autonomously. Nevertheless, both safety and communication with the user are fully ensured. With the described curb charging device for charging an energy storage unit of an electrically powered vehicle, a complete charging infrastructure can be easily created. It is flexible and modular in design, yet very easy to install. Damage to the electronics is largely prevented by the electronics box.Furthermore, handling, maintenance, and assembly are significantly simplified compared to conventional designs. The electronics box can be fully pre-assembled and replaced without having to remove the curb. Manufacturing and assembly costs are significantly reduced because maintenance can be performed centrally and production can be automated.
[0060] Furthermore, it should be clear that the electronics can be adapted to the respective conditions, especially the legal requirements of the respective countries. The connector socket can be equipped with a wide variety of lifting, folding, or pivoting mechanisms. The structure of the curb elements and the fastening 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.
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 powered vehicle (32), comprising a curbstone, paving stone, or curbstone element (34) having a receiving space (40) inside it, which is closed by a protective cover (42), a charging socket (24) arranged on the curbstone, paving stone, or curbstone element (34), a power supply cable (22) extending into the receiving space (40) in the curbstone, paving stone, or curbstone element (34), electronic components (50) arranged in the receiving space (40) of the curbstone, paving stone, or curbstone element (34) and via which the charging socket (24) is connected to the power supply cable (22), characterized in that the electronic components (50) are arranged in an electronics box (48) that is dust- and liquid-tight on all sides,which is arranged in the receiving space (40) and has a boundary wall (58) which delimits the dust- and liquid-tight electronics box (48) in the direction of the protective cover (42).
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 the dust- and liquid-tight electronics box (48) has a first sealed opening (66) through which a An electrical connection of the electronic components (50) to the power supply cable (22) can be established by means of a connection contact (68) and a power cable (76), wherein at least the connection contact (68) protrudes from the electronics box (48) into the receiving space (40). Curb, paving stone, or kerb 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 the dust-tight, dust-tight, and liquid-tight electronics box (48) has a second sealed opening (70) in which the charging socket (24) is arranged or through which a power cable (76) leading to the charging socket (24) is laid.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 the dust- and liquid-tight electronics box (48) has a third opening (72) closed by a dust- and liquid-tight pressure equalization membrane (74). 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 2 to 4, characterized in that the connection contact (68) is arranged between the protective cover (42) and a first section (60) of the boundary wall (58) of the dust- and liquid-tight electronics box (48), which delimits the electronics box (48) in the direction of the protective cover (42). Curbstone, paving stone, or curbstone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 5, characterized in that the boundary wall (58) delimiting the dust- and liquid-tight electronics box (48) in the direction of the protective cover (42) has a second section (62) that is offset from the first section (60) in the direction of the protective cover (42). Curbstone, paving stone, or curbstone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 6, characterized in that the dust- and liquid-tight electronics box (48) is fastened to the protective cover (42) by the second section (62).Curbstone, paving stone, or curbstone charging device (18) for charging an energy storage device (30) of an electrically powered vehicle (32) according to claim 6 or 7, characterized in that an RFID board (100) is arranged on the second section (62) of the boundary wall (58) of the dust- and liquid-tight electronics box (48), which boundary wall extends in the direction of the protective cover (42), opposite a viewing window (102) in the protective cover (42). 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 an inspection opening (81) is formed on the protective cover (42), which inspection opening can be closed by a maintenance cover (79). Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 8 or 9, characterized in that the connection contact is arranged between the maintenance cover (79) in the protective cover (42) and the first section of the boundary wall (58) of the dust- and liquid-tight electronics box (48).Curbstone, paving stone or kerbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claims 8 to 10, characterized in that a fourth opening (77) is formed on the first section (60) of the boundary wall (58), which opening is sealed by a rubber lip (75), wherein adjacent to the first section (60) of the boundary wall (58) in the interior of the dust- and liquid-tight electronics box (48) there is arranged a residual current device and / or a circuit breaker (78), which can be switched via the rubber lip (75) and is electrically connected to the connection contact (68). Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 11, characterized in that the residual current circuit breaker and / or the line circuit breaker (78) is arranged adjacent to the pressure equalization membrane (74).
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 9 to 12, characterized in that a transmitting and receiving unit (122) is arranged in the maintenance cover (79) or in the protective cover (42).
14. 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 claims 8 to 13, characterized in that the protective cover (42) has a viewing opening (86) and the dust- and liquid-tight electronics box (48) has a viewing window (83) in the second section, which is arranged opposite the viewing opening (86), wherein an energy meter (80) is arranged in the dust- and liquid-tight electronics box (48), the display unit (84) of which is visible through the viewing window (83) and the viewing opening (86).
15. Curbstone, paving stone or curbstone charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 14, characterized in that the energy meter (80) is arranged adjacent to the residual current circuit breaker and / or the circuit breaker (78).
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 the preceding claims, characterized in that a power contactor (96), a charging controller (94) and a power supply unit (92) are arranged in the dust- and liquid-tight electronics box (48).
17. Curb, paving stone or curb charging device (18) for charging an energy storage device (30) of an electrically driven vehicle (32) according to claim 16, characterized in that the power contactor (96) is arranged adjacent to the energy meter (80).
18. 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 17, characterized in that an actuator control (120) is arranged in the dust- and liquid-tight electronics box (48), which is connected to an actuator (118) for actuating a lifting or pivoting mechanism of the charging socket (24).
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 the preceding claims, characterized in that one or more of the electronic components (50) are fastened in the dust- and liquid-tight electronics box (48) via top-hat rails (88) which are earthed.
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 claims 3 to 19, characterized in that the curbstone, paving stone, or kerbstone element (34) has a receiving container (38) which is closed by the protective cover (42) and in which the dust- and liquid-tight electronics box (48) is arranged. A 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 dust- and liquid-tight electronics box (48) has a third section (106) which is movable towards the second section (62) by means of the lifting or pivoting mechanism, wherein the movement of the third section (106) towards the adjoining section (62) of the dust- and liquid-tight electronics box (48) can be compensated for by means of a sealed movement compensation element (116) which is arranged between the third section (106) and the adjoining section (62).