Foundation for a motor vehicle charging station

Abstract

The invention relates to a foundation for a motor vehicle charging station for charging an electric motor vehicle, comprising a base plate (110) and side walls, the foundation being designed with a top opening (130), which lies opposite the base plate, for the introduction of a cable (300) into the motor vehicle charging station. According to the invention, at least one side wall of the side walls comprises struts, the struts being arranged rigidly with respect to the base plate (110), and the foundation comprises at least one side wall element, the side wall element being arranged, when in a first position, such that a side opening delimited by the side wall element and provided for the purpose of feeding the cable (300) through is formed between the side wall element and the base plate (110), and the side wall element being movable relative to the struts such that, when the side wall element is moved out of the first position, the side opening is opened opposite the base plate (110) for the introduction of the cable (300) into the side opening.

Description

[0001] Title: Foundation for a vehicle charging station

[0002] The invention relates to a foundation for a vehicle charging station for charging an electric vehicle. The foundation comprises a base plate and side walls. The foundation is designed with a ceiling opening. The ceiling opening is arranged opposite the base plate. The ceiling opening serves to insert a cable into the vehicle charging station. The invention further relates to a foundation assembly comprising a foundation according to the invention and a cable arranged in the foundation. The invention also relates to a charging station assembly comprising a vehicle charging station and the foundation assembly according to the invention. Finally, the invention relates to a method for arranging a cable in a foundation.

[0003] Foundations for electric vehicle charging stations are well-known and distributed by the company Kortmann. These foundations are cast in concrete and, in addition to the opening in the ceiling, have a side opening to allow the cable to be inserted laterally into the foundation and routed out of the ceiling opening towards the charging station. Cables for electric vehicle charging stations have an outer diameter of, for example, up to 60 mm. This makes the cables rather inflexible. If the foundation is already embedded in the ground, it is difficult to insert the cable through the side opening.

[0004] The object of the invention is therefore to provide a foundation, a foundation assembly, a charging station assembly and a method for arranging a cable in a foundation that enable easy assembly.

[0005] The problem is solved by the independent patent claims. The dependent patent claims specify advantageous embodiments. In particular, a foundation with which a method according to the invention, especially a method according to claim 15 or 16, can be carried out is protected, as is a method that can be produced with a foundation according to the invention, especially a foundation according to any one of claims 1 to 12, and / or with which a foundation assembly according to the invention, especially according to claim 13, can be produced.

[0006] According to the invention, at least one side wall of the foundation's side walls comprises struts. The struts are rigidly arranged relative to the base plate. In other words, the struts and the base plate are arranged immovably relative to each other.

[0007] The foundation comprises at least one side wall element. The side wall element is arranged in a first position such that a lateral opening, bounded by the side wall element, is formed between the side wall element and the base plate for routing the cable. In this respect, the side wall element particularly binds the lateral opening opposite the base plate. Specifically, the struts can laterally bind the lateral opening.

[0008] It is possible that the side wall element in the first position is at least partially positioned between the struts.

[0009] The side wall element is designed to be movable relative to the struts and / or the base plate, so that when the side wall element is moved from its first position, the side opening opposite the base plate opens to allow the cable to be inserted. The side wall element can, for example, be removable or detachable, so that it can be moved aside during assembly and, after the cable has been inserted into the rest of the foundation, inserted or positioned in its first position. The removed side wall element is then in a second position.

[0010] The foundation is preferably designed to be laid in the ground so that a vehicle charging station can be attached to it. The foundation's primary purpose is to provide mechanical stability for the vehicle charging station.

[0011] The foundation serves, in particular, to guide at least one cable, laid in the ground, through the foundation into the vehicle charging station. The cable serves, in particular, to conduct electrical current for charging a vehicle battery. It is possible that several cables are laid through the foundation. This can be the case, in particular, if only one conductor is provided per cable. In one embodiment, five or nine cables are provided, which are laid through the foundation.

[0012] Within the scope of the invention, "opposite the base plate" means "pointing upwards" when the foundation is laid in the ground. Thus, the ceiling opening points upwards when the foundation is laid in the ground. If the side wall element has been removed from its initial position, the foundation laid in the ground is open at the top where the side wall element was previously located in its initial position. Moving the side wall element from its initial position opens the foundation upwards where the side wall element was previously located.

[0013] This allows the cable to be inserted into the foundation from above. This eliminates the need to insert the cable through the side opening. This results in particularly easy installation of the cable in the foundation. Even cables with limited flexibility can therefore be easily installed.

[0014] The foundation may include a top surface. The ceiling opening is specifically located in this top surface.

[0015] Preferably, the vehicle charging station is designed to be freestanding. This means that the vehicle charging station is attached to the foundation, and in particular, exclusively to it. The vehicle charging station serves to charge electric vehicles with electrical energy. For this purpose, the vehicle charging station may include a corresponding plug or socket as an electrical connection element for the vehicle. The vehicle charging station may include multiple connection elements for charging several vehicles. The vehicle charging station may be an AC charging station or a DC charging station. In the case of a DC charging station, it may be a high-power charging (HPC) station. The vehicle charging station may contain electrical components such as switches or meters and / or an electronic device.The vehicle charging station may contain an electrical connection for the cable.

[0016] The vehicle charging station can comprise a pedestal and at least one wall-mounted charging station. The pedestal is preferably attached to the foundation according to the invention. The at least one wall-mounted charging station, also referred to as a wallbox, is attached to the pedestal.

[0017] Alternatively, the foundation can be designed for a central distribution station for multiple vehicle charging points. This distribution station can include, for example, switches and / or control and / or measurement technology for the multiple vehicle charging points.

[0018] The electric vehicles in question could be electric cars or ships. The base plate of the foundation is designed to be oriented towards the ground after the foundation is laid. That is, when the foundation is laid in the ground, the base plate points downwards.

[0019] The base plate can be flat. Alternatively, the base plate can include at least one recess through which at least one forklift tine can be inserted. This makes it possible to lift the foundation with a forklift.

[0020] The foundation's side walls connect to the base slab. For example, pairs of opposing side walls can be provided. For example, four side walls can be provided. The four side walls can be designed as two pairs of opposing side walls.

[0021] The foundation may be essentially cuboid in shape. Adjacent side walls are preferably of different sizes.

[0022] Preferably, the side walls directly or indirectly surround the ceiling opening. It is preferably provided that the ceiling opening is concealed by the vehicle charging station when it is installed.

[0023] It may be provided that the side opening, when the foundation is laid in the ground, is limited upwards by the side wall element and downwards by the base plate.

[0024] If the side wall element limits the side opening, the side opening is specifically designed to be closed. If the side wall element is removed from its first position, the side opening is opened and designed to be open.

[0025] Preferably, the side opening to the interior of the foundation is always open. Thus, the side opening parallel to the base plate is always open, regardless of whether the side wall element is in its initial position or has been moved from its initial position.

[0026] In particular, the side wall element is arranged so that it can be moved from the first position, allowing the foundation between the struts, opposite the base plate, to be open in order to insert at least one cable between the struts.

[0027] Preferably, the struts, together with the side wall element and the side opening, can form a side wall of the foundation.

[0028] For example, the side wall with the side wall element can be referred to as a first side wall of the foundation. Preferably, each strut is rigidly arranged to a further side wall. Preferably, the struts are integrally connected to the further side wall and / or made of a single material. Particularly preferably, the struts are monolithically formed with each further side wall.

[0029] The struts may be formed integrally with the base plate and / or made of the same material. In particular, the struts may be monolithic with the base plate. For example, the foundation may comprise a foundation body. The foundation body includes the struts and the base plate. Preferably, the foundation body is formed as a single cast body.

[0030] It may be provided that the side wall element is made of the same material as the struts and / or the base plate.

[0031] Preferably, the foundation base is made of non-conductive material. It is conceivable that the foundation base is made of concrete.

[0032] The side wall element may be made of concrete or steel.

[0033] If the side wall element is made of steel, it may be provided that the side wall element is grounded.

[0034] Preferably, the side wall element is rounded on the side where it points towards the side opening in the first position. This prevents the cable from being damaged by the side wall element. If the side wall element is made of steel, it may be curved. Preferably, the foundation has at least one stop against which the side wall element rests in the first position. This prevents the side wall element from shifting inwards. This also prevents the soil from pushing the side wall element into the interior of the foundation. Preferably, the foundation includes several stops against which the side wall element rests in the first position to prevent inwards shifting.In particular, it may be provided that the struts each include a stop against which the side wall element rests, thereby preventing the side wall element from being displaced inwards.

[0035] It may be provided that an outer surface of the strut serves as a stop.

[0036] It may be provided that the side wall element includes a plate-shaped area with which the side wall element rests against the outer surface of the strut.

[0037] The foundation may include at least one positive locking element. The side wall element may include a counter-positive locking element. The counter-positive locking element corresponds to the positive locking element. The positive locking element and the counter-positive locking element may be designed to prevent the side wall element from shifting inwards or outwards in the first position. Thus, the positive locking element and the counter-positive locking element prevent the side wall element from moving inwards into the foundation and outwards outwards in the first position. In other words, the positive locking element and the counter-positive locking element prevent the side wall element from shifting parallel to the base plate in the first position. Therefore, the soil cannot push the side wall element inwards or outwards from the foundation in the first position.

[0038] Preferably, the positive locking element is designed as a threaded bushing or a threaded bolt. The opposing positive locking element is designed as a through hole. The positive locking element and the through hole correspond in such a way that the side wall element and the strut and / or the foundation base are fastened together by means of a fastening element, e.g., a screw can be screwed through the through hole into the threaded bushing, so that the side wall element is attached to the strut.

[0039] Additionally or alternatively, the positive locking element can be designed as a recess and the counter-positive locking element as a projection.

[0040] In another alternative, the positive locking element and the counter-positive locking element can be designed as a tongue-and-groove connection.

[0041] The foundation may be designed to include several positive locking elements, and the side wall element may include several corresponding counter-positive locking elements to prevent inward and outward displacement of the side wall element in the first position. In particular, each strut may include at least one positive locking element, and the side wall element may include a counter-positive locking element for each positive locking element of the struts. For example, each strut may include a threaded bushing or threaded bolt as a positive locking element, and the side wall element may include a corresponding through-hole for each. The side wall element and one of the struts may each be positively connected by a fastening element.

[0042] Additionally or alternatively, at least one of the struts, preferably exactly one strut, can include a recess in which a projection of the side wall element is inserted.

[0043] In one embodiment, one of the struts comprises a threaded bushing and a recess as positive locking elements, while the other strut comprises a threaded bushing but not a recess. Alternatively, each strut can each comprise a projection that engages in a groove of the side wall element.

[0044] The stop can be designed as part of the positive locking element. For example, the stop can be designed as the outwardly directed part of the projection.

[0045] Preferably, the foundation includes both the stop and several positive locking elements.

[0046] Preferably, the foundation is designed such that the side wall element is held in the first position, particularly in a form-fitting manner, so that the side wall element, opposite the base plate, is flush with the struts and / or the foundation base. Thus, the side wall element can be flush with the struts and / or the foundation base on the upper side. In this case, the side wall element and the struts and / or the foundation base form the upper surface of the foundation. With a vehicle charging station installed, the charging station thus connects to the at least one side wall element and to the struts and / or the foundation base, particularly without gaps.

[0047] For this purpose, the foundation can, in particular, include at least one end stop that limits movement of the side wall element in the first position towards the base plate. Because the side wall element is flush with the struts and / or the foundation base when the foundation is embedded in the ground, it is possible to attach the vehicle charging station to the foundation without significant gaps, provided the vehicle charging station is positioned at least partially vertically above the side wall element. If the vehicle charging station is positioned next to the side wall element, or if the vehicle charging station is not yet installed, the flush connection of the side wall element with the struts and / or the foundation base ensures a level ground surface.

[0048] Preferably, the foundation can include several end stops that limit movement of the side wall element towards the base plate.

[0049] It may be provided that the end stops are located in the top surface of the foundation, in particular the foundation base. It may also be provided that the end stops are located in a recess in the top surface, so that the side wall element sits in the recess. This prevents, for example, the side wall element from projecting beyond the foundation base.

[0050] Particularly preferred is the side wall element provided with a crank, the crank being located in the recess. This prevents screws that fasten the positive locking elements and counter-positive locking elements to each other from protruding above the top surface, and in particular from extending beyond the foundation body.

[0051] For example, the struts are each designed in such a way that the side wall element in the first position is arranged or held between the struts in such a way that the side wall element, opposite the base plate, is at least partially flush with the struts.

[0052] In this context, the struts can, in particular, hold the side wall element securely in the first position. Specifically, each strut can include an end stop against which the side wall element rests in the first position.

[0053] Preferably, the side wall element is at least partially formed with a trapezoidal outline. The struts may taper from the base plate.

[0054] Preferably, the side wall element in the first position is designed to be at least partially flush with the struts and / or the foundation base. Preferably, at least a central area of ​​the side wall element, which is designed to be positioned between the struts in the side wall from the top of the foundation, is designed to be flush with the struts and / or the foundation base. This facilitates the integration of the foundation at ground level. This is particularly relevant if a surface covering, such as an asphalt surface, paving stones, or slabs, is provided around the foundation at ground level.

[0055] Alternatively, it can be provided that at least one side wall element covers the struts and / or the foundation base in such a way that only this side wall element forms the flat, top surface. With a vehicle charging station installed, the charging station thus connects exclusively to the side wall element(s). In this case, the at least one side wall element can completely cover the foundation base on the outside. On the inside, towards the ceiling opening, the at least one side wall element can cover or at least partially expose the struts and / or the foundation base. Preferably, the vehicle charging station connects to the foundation with virtually no gaps, as it rests exclusively against the side wall element(s).

[0056] Additionally or alternatively, the side wall element(s) can, starting from the top of the foundation, form the side walls of the foundation in an upper section. In this case, the side wall element(s) completely cover the struts and / or the foundation body in the upper section, starting from the top of the foundation. This results in the side walls being flat from the top. The side walls may include a step where the side wall element ends and the side wall is formed by the foundation body and / or the struts. In other words, it may be provided that an upper section of the side wall, which includes the side opening, is formed by the side wall element, and a lower section of the side wall is formed by the foundation body and / or the struts together with the side opening.

[0057] It may be intended that the side wall element covers the side opening in the first position.

[0058] In one embodiment, the side wall element in the first position may at least partially cover several side openings. For example, the side wall element may be designed to cover all side openings. Alternatively, several side wall elements may be provided that together cover all side wall openings. In this case, the side wall elements may be directly adjacent to one another and / or each may partially cover a side wall opening.

[0059] In one example, the side wall element or elements are designed in a shoebox lid-like manner.

[0060] It may be planned that the foundation is to be laid in the ground at a time interval before the installation of the vehicle charging station and to accommodate a cable.

[0061] Preferably, the foundation is provided with a length and / or width such that one end of the cable, which in a first position protrudes 40 cm, preferably 30 cm, and particularly preferably 20 cm from the ceiling opening, can be arranged inside the foundation in a second position, whereby a minimum permissible bending radius of the cable can be maintained in both the first and second positions. The length of the foundation is defined, in particular, parallel to the base plate. The length of the cable from its entry into the side opening does not change in the first and second positions. Because the cable can be arranged inside the foundation in a permissible manner without being damaged in the second position, the foundation can be prepared with the cable in place even if the installation of the vehicle charging station will only take place at a considerable time later.This eliminates the need for excavation work during the later installation of the actual vehicle charging station. Instead, the excavation work is carried out beforehand when laying the foundation and cable in the ground and arranging the cable within the foundation.

[0062] For example, in the second position, the cable within the foundation can essentially rest against the base plate in the side opening at the point where it enters the foundation. In the second position, one cable end can rest against a side wall opposite the side opening. Preferably, this cable end should rest against the side wall as far away from the base plate as possible.

[0063] It is conceivable that in the second position the cable lies in the foundation between the entry point and the cable end, following a circular arc with the minimum permissible bending radius.

[0064] The foundation comprises the upper surface opposite the base plate. Preferably, the foundation includes, particularly on its upper surface, fastening means for attaching the vehicle charging station to the foundation. The fastening means can be, for example, threaded bushings or threaded bolts. Threaded bushings are particularly preferred.

[0065] The fastening means may also serve as positive locking elements. It is conceivable that the top surface is formed at least partially by the end faces of the side walls. The top surface may be formed partially by an end face of at least one side wall element. The top surface may be formed partially by a strut end face of the struts. The fastening means may be arranged at least partially on the end faces. Preferably, the fastening means are arranged in the strut end faces.

[0066] The foundation may be designed to include fasteners for attaching the vehicle charging station to the foundation in different orientations. Specifically, the foundation may be designed to provide fasteners for attaching the vehicle charging station in two orientations: first, lengthwise to the foundation, and second, crosswise to the foundation. A first set of fasteners may be provided for the first orientation, and a second set for the second. This allows the vehicle charging station to be installed in different orientations even after the foundation has been laid in the ground.

[0067] The foundation may include fasteners to attach differently sized vehicle charging stations to the foundation.

[0068] The foundation may be designed to include a cover. Preferably, the cover closes the base of the foundation.

[0069] The cover can serve to form a seal against the ground surface when the foundation is embedded in the soil. The cover can be in both a closed and an open position. This allows the top surface to be at least partially movable.

[0070] In particular, the cover can be designed to be removed from the foundation base.

[0071] Preferably, the cover may be designed to guide the cable from the second position to the first position. In particular, the cover allows a technician to access the cable in the second position. In this position, the cover is open. The technician can then move the cover from its final position when the vehicle charging station is installed.

[0072] This avoids creating an open hole in the ground between laying the foundation and installing the vehicle charging station. This prevents objects from falling into the hole. Traffic routes are thus secured, even if a significant amount of time elapses between laying the foundation and installing the charging station. Consequently, it is unnecessary to secure the ground surface with construction site safety measures after laying the foundation.

[0073] It is conceivable that the top of the foundation is dimensioned in a first configuration such that the installed vehicle charging station covers at least 70%, preferably at least 80%, and particularly preferably at least 95% of the top surface. Alternatively, the top of the foundation can be dimensioned in a second configuration such that the installed vehicle charging station covers less than 60%, preferably less than 50%, and particularly preferably less than 40% of the top surface. The second configuration can be provided, in particular, if the vehicle charging station can be attached to the foundation in several orientations.

[0074] It is conceivable that the top of the foundation is dimensioned in a first dimensioning such that the installed vehicle charging station, as one of the possible vehicle charging stations to be installed, covers at least 70%, preferably at least 80%, and particularly preferably at least 95% of the top. If, on the other hand, an alternative vehicle charging station from among the several possible charging stations is installed, it is possible that the installed vehicle charging station covers less than 65%, preferably less than 50%, and particularly preferably less than 40% of the top.

[0075] The cover can serve additionally or alternatively to conceal the portion of the surface protruding from the vehicle charging station once it is installed. In this way, the cover becomes part of the ground surface, thus avoiding significant holes in the ground. It is possible that a number of fasteners, not required for securing the vehicle charging station (because the charging station is already attached to the foundation by other fasteners), are located in this protruding portion of the surface.

[0076] The cover can be designed to be flush with the side walls and / or the foundation base. This creates a flat surface on top of the foundation. This eliminates a step at ground level when the foundation is embedded in the ground. As a result, traffic routes are particularly well secured.

[0077] It can be provided that the foundation, in particular the foundation base, includes at least one step on which the cover rests. Preferably, several steps are provided. In one embodiment, steps are provided in the foundation base and in the at least one side wall element.

[0078] The foundation may include connecting elements to attach the cover to the rest of the foundation. For example, the shoulder and the cover may include these connecting elements. The connecting elements in the rest of the foundation, particularly in the shoulder, may be designed, for example, as threaded bushings. The connecting elements in the cover may be designed, for example, as through-holes to allow a screw to be inserted through the cover into the threaded bushing. The cover may be made of the same material as the foundation body and / or the side wall element. For example, the cover may be made of a non-conductive material, particularly concrete.

[0079] Preferably, the cover includes fastening means for attaching the vehicle charging station to the foundation. Particularly preferably, both the cover and the end faces include fastening means. For example, the cover may include fastening means for a first alignment of the vehicle charging station, and the end faces may include fastening means for a second alignment of the vehicle charging station.

[0080] It may be designed so that the lid encompasses the ceiling opening.

[0081] Preferably, the cover is designed with a movable, and in particular removable, locking element. This locking element serves to close the opening in the cover. When the locking element is removed, the opening remains open. In this case, the cover can still form at least part of the top of the foundation. This is particularly advantageous if the cover extends laterally beyond the vehicle charging station and / or if the vehicle charging station is attached to the cover.

[0082] The foundation may be designed to include multiple openings on either side. These openings can be designed to allow the cable to be inserted into the foundation from different directions. For example, the multiple openings can be used to insert a first and a second cable, each with multiple conductors, into the foundation. These two cables form a main line, from which a branch line for charging the vehicle is drawn within the charging station. This allows multiple charging stations to be connected in series to the main line.

[0083] At least two side walls of the side walls, particularly opposing side walls, preferably each comprise struts. In particular, the struts are each rigidly arranged or formed relative to the base plate. Most preferably, the struts are each made of the same material and / or formed integrally with the base plate. The foundation body can include the struts.

[0084] The foundation, preferably at least two side walls, particularly preferably opposing side walls, preferably each comprise side wall elements. Preferably, at least two of the side walls, particularly opposing side walls, each comprise struts and a side wall element. Preferably, each side wall element of the multiple side wall elements is configured as already described for the side wall element within the scope of this disclosure.

[0085] It can be provided that each side wall element is arranged in a first position such that a lateral opening, bounded by the respective side wall element, is formed between the respective side wall element and the base plate for routing the cable. In particular, struts can laterally define the lateral boundary of the lateral opening.

[0086] The respective side wall element can be positioned at least partially between the struts in the first position.

[0087] The side wall elements are each designed to be movable, so that when one of the multiple side wall elements is moved from its initial position, the corresponding side opening opposite the base plate opens to allow the cable to be inserted. Each side wall element can also be designed to be movable, so that when the respective side wall element is moved, the corresponding side opening opens upwards to allow the cable to be inserted.

[0088] The multiple side wall elements can be moved independently of each other. In particular, the side wall elements can be designed to be removable, so that at least one of the multiple side wall elements can be moved aside during assembly and, after the cable has been inserted into the rest of the foundation, can be inserted or positioned in the first position.

[0089] For example, several side wall elements are moved aside during assembly to allow multiple cables to be inserted into the foundation.

[0090] Preferably, each side opening is laterally limited by the struts.

[0091] The multiple side wall elements are preferably arranged in a first position, particularly between struts of the respective side wall, such that a closed side opening opposite the base plate is formed between each side wall element and the base plate for routing the cable. The side wall elements are preferably arranged to be movable relative to the struts of the respective side wall, so that each side wall element can be moved from the first position, thus creating an open foundation between the struts of the respective side wall, opposite the base plate, to allow the cable to be inserted between the struts of the respective side wall.

[0092] The multiple side wall elements can be made of the same material as each other. Alternatively, the multiple side wall elements can be made of different materials than the struts and / or the foundation base. For example, the struts and / or the foundation base can be made of concrete, and the multiple side wall elements can be made of steel. Each of the multiple side wall elements can include at least one, preferably several, interlocking elements.

[0093] In the first position, the multiple side wall elements can each be designed to be flush with the struts and / or the foundation base.

[0094] The multiple side wall elements can each encompass a trapezoidal outline.

[0095] It may be provided that several, especially opposing, side wall elements are of identical construction.

[0096] Preferably, the foundation is designed to arrange the multiple side wall elements analogously to the single side wall element already described in the first position. In particular, the foundation, especially the struts, can be designed with at least one stop for each side wall element against which the respective side wall element rests in the first position. The stops serve to limit the inward displacement of the side wall elements. Preferably, the foundation is designed with multiple stops for each side wall element. Preferably, the foundation, especially the struts, can be designed with at least one positive locking element for each side wall element to limit the inward and outward displacement of the side wall elements. Preferably, the foundation is designed with multiple positive locking elements for each side wall element.

[0097] The foundation, in particular the struts, preferably includes at least one end stop for each side wall element. This ensures that the side wall elements are flush with the struts at the top. Preferably, the foundation includes several end stops for each side wall element. The foundation body can encompass all struts. All struts can be integrally and / or of a single material, in particular monolithically, connected to the base plate.

[0098] Preferably, two struts are provided for each side wall element. Preferably, the struts are each designed with a positive locking element and / or an end stop. The struts for each side wall element can taper from the base plate.

[0099] Preferably, each of the two struts, together with the associated side wall element and the base plate, can define a closed side opening. Each of the two struts, together with the associated side wall element and the associated side opening, can form a side wall of the foundation.

[0100] Preferably, one strut of each of the two braces is rigidly connected to one of the several side walls. Preferably, the struts are integrally connected to the other side wall and / or made of a single material. Particularly preferably, the struts are monolithically connected to the other side wall.

[0101] It can be provided that each side wall is formed with a side wall element. In this case, all side walls are preferably formed with struts. Preferably, if each side wall is formed with a side wall element, the opposing side wall elements are identical in construction. Accordingly, the struts for opposing side wall elements can be identical in construction. Non-opposing side wall elements, however, preferably differ in their spatial dimensions.

[0102] If all side walls are each formed with a side wall element, two adjacent struts form a common corner pillar. The common corner pillar is preferably made of a single material and / or in one piece, in particular monolithically. It may be provided that each corner pillar comprises at least one fastening element, in particular exactly one fastening element.

[0103] If all side walls are formed with a single side wall element each, the foundation may be constructed without a cover. In this embodiment, the base plate may be flat.

[0104] As an alternative to the embodiment in which each side wall comprises a side wall element, it can be provided that at least two side walls are formed with a side wall element and at least two further side walls are formed without a movable side wall element. The side walls without a side wall element are preferably formed as a continuous wall. The side walls with a movable side wall element are preferably formed with struts. Preferably, exactly two side walls are formed with a side wall element and exactly two further side walls are formed without a movable side wall element.

[0105] If at least two side walls are designed without a movable side wall element, it is preferably provided that the struts are each formed in one piece and / or of the same material, in particular monolithically, with the adjacent side wall without a movable side wall element.

[0106] If at least two side walls are designed without a movable side wall element, the end surfaces of the side walls, in particular the side walls without a side wall element, may include fastening means to attach the vehicle charging station to the foundation.

[0107] It is possible for two opposing side walls to each have a movable side wall element, and for two opposing side walls to each have no side wall element. This embodiment is preferably intended for AC charging stations.

[0108] It is possible for two adjacent side walls to each have a movable side wall element, and for two adjacent side walls to each have no side wall element. In this case, two adjacent struts preferably form a common corner pillar. This embodiment is preferably intended for DC charging stations, in particular for HPC (High Power Charging) charging stations.

[0109] Preferably, the cover includes fastening means for initial alignment of the vehicle charging station. The end faces of the side walls, without a side wall element, may include fastening means for a second alignment of the vehicle charging station.

[0110] If at least two side walls are designed without a movable side wall element, the base plate may preferably include at least the recess through which at least one fork of a forklift can be guided.

[0111] The object of the invention is also achieved by a foundation assembly. The foundation assembly comprises a foundation according to the invention, as described in this disclosure, i.e., in the description, the drawings, and claims 1 to 12. The foundation assembly further comprises at least one cable. The cable serves, in particular, at least to conduct electrical current for charging a battery of an electric vehicle. The cable is designed to be inserted through the foundation into the vehicle charging station. The cable is arranged in the foundation. The cable can be designed as an NYM cable or an underground cable, in particular as an NYY underground cable. The cable can, for example, comprise five conductors. Preferably, the outer diameter of the cable can be up to 60 mm. For example, the outer diameter of the cable can be at least 18 mm, preferably at least 22 mm, and particularly preferably 35 mm.Alternatively, several single-core cables are provided, especially for an HPC charging station. The cable can have an average cross-sectional area of ​​150 to 300 square millimeters.

[0112] For example, a first and a second cable, in particular a first and a second multi-core cable, are arranged in the foundation. The first and the second cables serve to be electrically connected to each other in the vehicle charging station, so that the first and the second cables form a main line. Preferably, a branch line for charging the vehicle extends from the main line within the vehicle charging station. This allows several vehicle charging stations to be connected in series to the main line. It can be provided that the first and the second cables are inserted through different side openings. Preferably, the side opening for the first cable is arranged opposite the side opening for the second cable.

[0113] In the foundation assembly, at least one cable is arranged in the side opening. If a first and a second multi-core cable are provided, the first and second cables are preferably each arranged in a side opening, or preferably in several side openings. If several single-core cables are provided, the several cables are preferably located in one of the several side openings. The side wall element(s) are in the first position.

[0114] The object of the invention is also achieved by a charging station assembly. The charging station assembly comprises a foundation assembly according to the invention, as described in this disclosure, in particular a foundation assembly according to claim 13. The charging station assembly further comprises a vehicle charging station. The vehicle charging station is mounted on the foundation.

[0115] At least one cable is fed into the vehicle charging station through the ceiling opening. The vehicle charging station is preferably attached to the foundation's mounting points. Preferably, the vehicle charging station is attached to several mounting points, at least three or at least four. In particular, the vehicle charging station includes corresponding counter-mounting points, especially holes for screws. The counter-mounting points are preferably arranged inside the vehicle charging station. It may be provided that the vehicle charging station at least partially covers at least one side wall element, the side wall element(s). This may be the case, in particular, with an AC charging station or a high-performance charging station. Alternatively, the vehicle charging station may be arranged at a distance from the side wall elements.This may be particularly relevant for a DC charging station with a charging capacity below 100 kW.

[0116] Preferably, the vehicle charging station should be attached to the foundation with virtually no gaps.

[0117] Preferably, at least one branch line is arranged in the vehicle charging station. If two multi-core cables are arranged in the foundation, the two cables are electrically connected to each other in the vehicle charging station to form the main line. The branch line is electrically connected to the main line in the vehicle charging station.

[0118] Preferably, the vehicle charging station includes an electronic device.

[0119] It may be possible for electronic data to be received and / or sent from the electronic device via the cable. For this purpose, the vehicle charging station may include a powerline modem or a powerline adapter.

[0120] Alternatively, in addition to at least one cable, at least one data line can be introduced into the foundation through a side opening and into the vehicle charging station through the ceiling opening or through the opening in the cover.

[0121] The object of the invention is also achieved by a method for arranging a cable in a foundation. Preferably, the foundation is a foundation according to the invention, as described in this disclosure, in particular according to a foundation of claims 1 to 12. The method according to the invention particularly produces a foundation assembly according to the invention, as described in this disclosure.

[0122] The foundation includes, in particular, a side opening. The foundation preferably includes a side wall element. The side opening may be open opposite the base plate if the side wall element is not in a first position. In this case, the side wall element may, in particular, have been removed from the rest of the foundation. The side opening may be closed opposite the base plate if the side wall element is in the first position.

[0123] According to the invention, the method comprises the following steps:

[0124] Inserting the cable into the foundation with the side opening open.

[0125] Movement of the side wall element into the first position. Preferably, the cable is inserted from above with the foundation laid in the ground. Preferably, the cable is inserted from the top of the foundation into the opened side opening.

[0126] It may be planned that several cables are to be installed in the foundation. In the case of multi-core cables, the cables are preferably installed in different, open side openings. In the case of several single-core cables, the cables are preferably installed in the same side opening. Subsequently, the corresponding side wall element(s) are moved into the first position.

[0127] Before the process step of inserting at least one cable, the side wall element is preferably removed from the first position.

[0128] When inserting multiple multi-core cables, it is preferably necessary to remove a first side wall element to insert the first cable. A second side wall element is preferably removed to insert the second cable. The removal of the first and second side wall elements can be performed simultaneously or sequentially. Preferably, the first and second side wall elements are arranged opposite each other.

[0129] If the foundation is designed with a cover, the following steps should preferably be carried out before the cable is laid:

[0130] • Removing the cover from the rest of the foundation,

[0131] • Moving at least one side wall element from the first position.

[0132] After inserting the cable into the opened side opening and moving at least one side wall element into the first position, the cover is preferably reinserted into the rest of the foundation.

[0133] If the vehicle charging station is to be installed immediately afterwards, the cable is led out of the foundation through the ceiling element.

[0134] If a cover is present, the locking element is removed from the cover. The cable is placed through the opening in the cover, preferably before the cover is inserted into the rest of the foundation.

[0135] Particularly if a vehicle charging station is not to be attached to the foundation assembly immediately after its manufacture, the procedure may optionally include the following steps: • Positioning a cable end in the foundation

[0136] • Moving the lid into the closed position.

[0137] Preferably, the locking element remains in the lid if the vehicle charging station has not yet been installed.

[0138] The cable end of at least one cable embedded in the foundation is positioned on a side wall as far away from the base plate as possible, taking into account the minimum permissible bending radius. Thus, the cable end rests against the side wall near the cover.

[0139] Exemplary embodiments of the invention are described below with reference to the figures. The same reference numerals denote the same functional elements in the figures. Figure 1 shows a perspective view of a foundation according to a first embodiment of the invention.

[0140] Figure 2 is an exploded view of the foundation from Figure 1.

[0141] Figure 3 shows a foundation assembly according to the invention with a foundation from Figure 1, Figure 4 shows an alternative foundation assembly with a foundation from Figure 1,

[0142] Figure 5 shows a perspective view of a foundation according to a second embodiment of the invention.

[0143] Figure 6 is an exploded view of the foundation from Figure 5.

[0144] Figure 7 shows a foundation assembly according to the invention with a foundation from Figure 5. Figure 8 shows a foundation assembly according to the invention in a schematic representation with a protruding cable.

[0145] Figure 9 shows the schematic representation from Figure 8 with a cable end arranged in the foundation,

[0146] Figure 10 shows a method according to the invention,

[0147] Figure 11 shows a further embodiment of a foundation assembly according to the invention with a foundation according to the invention.

[0148] Figure 12 shows the embodiment of Figure 11 in an exploded view,

[0149] Figure 13 shows a further embodiment of a foundation according to the invention, Figure 14 shows a further embodiment of a foundation according to the invention and

[0150] Figure 15 shows a foundation base body for a foundation according to the invention for a foundation according to Figure 13 or 14.

[0151] Figure 1 shows a first embodiment of a foundation 100 according to the invention. The foundation 100 is preferably intended for AC charging stations.

[0152] The foundation 100 comprises a base plate 110. The base plate 110 is flat. In Figures 1 to 4, the foundation 100 is oriented as it is laid in the ground. The base plate 100 is oriented downwards. An opposite upper surface 115 of the foundation 100 is oriented upwards towards a vehicle charging station (not shown). The terms "top" and "bottom" will be used accordingly in the following.

[0153] The foundation 100 is cuboid in shape. Thus, the foundation 100 comprises four side walls, two of which, 121 and 122, are visible from the outside in Figure 1. The foundation 100 includes a ceiling opening 130 through which a cable 300 can be inserted into a vehicle charging station (not shown). The ceiling opening 130 is directly bounded by the side walls 121 and 122. To insert the cable 300 into the vehicle charging station, the cable 300 protrudes from the ceiling opening 130, as shown in Figures 3 and 4.

[0154] The foundation 100 comprises four side openings 141, 142, 143, 144, of which two side openings 141, 142 are fully visible in Figure 1 and two further side openings 143, 144 are partially visible (see also Figure 2).

[0155] The foundation 100 comprises four movable side wall elements 151, 152, 153, 154.

[0156] According to the invention, the side wall elements 151, 152, 153, 154 can assume a first position, as shown in Figures 1, 3, and 4. In this first position, the side wall elements 151, 152, 153, 154 close the side openings 141, 142, 143, 144. If one of the side wall elements 151, 152, 153, 154 is removed from this first position, the corresponding side opening 141, 142, 143, 144 is accessible from above and thus open. This is shown in the exploded view in Figure 2. This allows the cable 300 to be easily inserted into a side opening 141, 142, 143, 144 from above. The side wall element 151, 152, 153, 154 is then moved back to its first position, and the side opening 141, 142, 143, 144 is closed again. The side openings 141, 142, 143, 144 are always open, parallel to the base plate 110.This allows a cable 300 to be laid through any side opening into the interior of the foundation 100, even if the corresponding side wall element 151, 152, 153, 154 is in the first position.

[0157] The side wall elements 151, 152, 153, 154 are each arranged between two struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642. This results in eight struts in the foundation, two for each of the four side wall elements 151, 152, 153, 154. In Figure 1, the struts 1611, 1612, between which the side wall element 151 is arranged, and the struts 1631, 1632, between which the side wall element 153 is arranged, are visible from the outside. The struts 1621, 1621 and 1641, 1642, between which the side wall element 152 and 154, respectively, are arranged, are shown particularly well in Figure 2. The struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642 taper upwards.

[0158] Two struts together form a monolithic corner pier 171, 172, 173, 174. Struts 1611 and 1642 form corner pier 171. Struts 1612 and 1631 form corner pier 172. Struts 1632 and 1621 form corner pier 173. Struts 1622 and 1641 form corner pier 174.

[0159] The corner pillars 171, 172, 173, 174 together with the base plate 110 form a common monolithic cast concrete element, which is referred to as the foundation body 180.

[0160] The side openings 141, 142, 143, 144 are bounded at the bottom by the base plate 110, on the sides by the struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642, and, when closed, at the top by the side wall elements 151, 152, 153, 154. Opposite side openings 141, 142 and 143, 144 are identical.

[0161] The side wall elements 151, 152, 153, 154 have a trapezoidal outline.

[0162] Opposing side wall elements 151, 152 and 153, 154 are each identically constructed. Side wall elements 151, 152, 153, 154 are also made of concrete.

[0163] The corner pillars 171, 172, 173, 174 contain fastening elements 190 designed as threaded bushings, which are only partially labelled in Figures 1 to 3 for clarity. The fastening elements 190 serve to attach a vehicle charging station to them.

[0164] For example, the vehicle charging station can include internal holes on its base that correspond to the fastening elements 190, through which screws can be inserted into the fastening elements 190. This allows the vehicle charging station to substantially cover the foundation 100 when installed. The side wall elements 151, 152, 153, 154 and the corner posts 171, 172, 173, 174 together form the top surface 115 of the foundation 100. For this purpose, the side wall elements 151, 152, 153, 154 have corresponding element end surfaces 116, and the corner posts formed by the struts have corresponding strut end surfaces 117. The element end surfaces 116 and the strut end surfaces 117 together form the end surfaces 118 of the side walls 121, 122.

[0165] The side wall elements 151, 152, 153, 154 are formed flush with the foundation body 180 in the first position. This ensures that the vehicle charging station, when installed, connects to the foundation 100 with virtually no gaps.

[0166] To ensure that the side wall elements 151, 152, 153, 154 are flush with the foundation base 180, the struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642 each include an end stop 165 against which the corresponding side wall element 151, 152, 153, 154 rests in the first position. The end stop 165 positively limits downward movement of the side wall element 151, 152, 153, 154. In Figure 2, the end stops 165 for the side wall element 153 are labeled with reference numerals. For clarity, the end stops 165 for the other side wall elements 151, 152, 154 are not labeled.

[0167] The side wall elements 151, 152, 153, 154 are designed flush with the foundation body 180 in the first position. This allows an asphalt surface, a paved surface or a slab covering to be easily laid around the foundation.

[0168] The struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642 each include a positive locking element 166. The positive locking element 166 is designed as a projection. The side wall elements 151, 152, 153, 154 each include a counter-positive locking element 167, which is designed as a groove for each projection. In the first position of the side wall elements 151, 152, 153, 154, the projection 166 engages positively in the corresponding groove 167. This prevents the side wall elements 151, 152, 153, 154 from being displaced inwards and outwards. The positive locking element 166 also serves as a stop, preventing the respective side wall element 151, 152, 153, 154 from shifting inwards. For clarity, only some of the positive locking elements 166 and counter-positive locking elements 167 are labeled with reference numerals in Figure 2.

[0169] Figures 3 and 4 show foundation assemblies 210 and 220, respectively, in which a cable 300 is arranged in the foundation 100. In the embodiment according to Figure 3, the side wall element 152 has been removed from its first position to allow the cable 300 to be inserted into the side opening 142. In the alternative embodiment according to Figure 4, the side wall element 154 has been removed from its first position to allow the cable 300 to be inserted into the side opening 144. In an embodiment not shown, two cables are inserted into the foundation 100, preferably from opposite side openings 141, 142 and 143, 144, respectively. The cable protrudes from the ceiling opening 130 in each case to be electrically grounded in the vehicle charging station.

[0170] Figure 5 shows a second embodiment of a foundation 101 according to the invention. The foundation 101 is preferably intended for DC charging stations. Unless otherwise described below, the descriptions for the foundation 100 according to Figure 1 also apply to the foundation 101 according to Figure 5, to which reference is made. Accordingly, the same reference numerals are used where possible. The following section describes primarily the differences from the first embodiment.

[0171] The base plate 110 of the foundation 101 includes recesses 111, 112, through which the forks of a forklift can be guided.

[0172] The foundation 101 comprises two opposing side openings 141, 142, one of which, 141, is visible in the side wall 121 in Figure 5. Two side walls 122, 123 are formed without side openings, one of which, 122, is shown in its entirety in Figure 5. The foundation 101 comprises two movable, opposing side wall elements 151, 152. In the first position, side wall element 151 closes the side opening 141. In the second position, side wall element 152 closes the opposite side opening, shown in Figure 6.

[0173] The struts 1611, 1612, between which the side wall element 151 is arranged in the first position, and the struts 1621, 1622, between which the side wall element 152 is arranged, transition monolithically into the adjacent side walls 122, 123 (see also Figure 6). Here, the struts 1611, 1622 transition into the side wall 123. The struts 1612, 1621 transition into the side wall 122.

[0174] The struts 1611, 1612, 1621, 1622, the side walls 122, 123 and the base plate 110 form the monolithic foundation body 180 made of concrete.

[0175] The side wall elements 151, 152 are positively locked in the first position by end stops 165, positive locking elements 166, and counter-positive locking elements 167. The side wall elements 151, 152 are flush with the foundation body 180 on the upper and outer sides. In Figure 6, only the end stops 165 of the struts 1611, 1612 are shown. The end stops 165 of the struts 1621, 1622 are hidden.

[0176] The foundation 101 includes a cover 200. The cover 200, together with the end faces 118 of the side walls 121, 122, 123, forms the top surface 115 of the foundation 101. The end faces 118 are composed of the element end faces 116, the strut end faces 117, and the end faces 119 of the continuous side walls 122, 123.

[0177] The lid 200 is made of concrete.

[0178] The identically designed side wall elements 151, 152 each include a shoulder 155 on which the cover 200 rests, as shown in Figure 6. The foundation body 180 also includes shoulders on which the cover 200 rests. The shoulder 181, which adjoins the side wall 123 and the struts 1611, 1622, is shown in Figure 6. A similar shoulder, not shown, adjoins the side wall 122 and the struts 1612, 1621. Connecting elements 182, designed as threaded bushings, are arranged in the shoulders 181 of the foundation body 180. Connecting elements 201, designed as through-holes, are arranged in the cover 200. Screws are inserted through the connecting elements 201 into the connecting elements 182 to fasten the cover 200 to the foundation body 180.

[0179] The top surface 115 of the foundation 101 is larger than the vehicle charging station to which it is to be attached. Therefore, after the vehicle charging station is installed, the foundation will protrude laterally beyond the vehicle charging station.

[0180] Fasteners 190 are provided in the top surface 115 of the foundation 101 to attach the vehicle charging station to the foundation 101 in different orientations. A first set of fasteners 191 are provided in the end faces 119 to attach the vehicle charging station transversely to the foundation 101. A second set of fasteners 192 are provided in the cover 200 to attach the vehicle charging station longitudinally to the foundation.

[0181] If the fasteners 191 are mentally connected, a first rectangle is formed. If the fasteners 192 are mentally connected, a second rectangle is formed.

[0182] The cover 200 encompasses the ceiling opening 130, see Figure 6. The cover 200 is designed with a locking element 202. The locking element 202 makes it possible to lay the foundation 101 in the ground at a later time after the installation of the vehicle charging station, while still maintaining traffic safety. The locking element 202 closes the ceiling opening 130.

[0183] With the locking element 202 removed, the ceiling opening 130 is open, allowing a cable 300 to be inserted into the vehicle charging station. The ceiling opening 130 is thus formed in the cover 200 of the foundation 101. The ceiling opening 130 is dimensioned and positioned such that the installed vehicle charging station, in both orientations—transverse and longitudinal to the foundation 101—conceals the ceiling opening 130. The locking element 202 and the ceiling opening 130 are located within the first and second rectangles, respectively. Figure 7 shows a foundation assembly 230 for the foundation 101. The cable 300 is inserted into the side opening 141. To insert the cable 300, the side wall element 151 had previously been removed, allowing the cable to be inserted from above. The side wall element 151 was then reinserted into the first position shown in Figure 7.

[0184] If there is a time gap between laying the foundation 101 in the ground and installing the vehicle charging station, the cable 300 can still be inserted into the foundation 101 during the laying of the foundation 101. For this purpose, the foundation 101 is dimensioned such that a cable end 301 can be positioned in the foundation with a closed top 115 while maintaining the minimum permissible bending radius.

[0185] Figures 8 and 9 illustrate this relationship schematically. Figure 8 schematically shows the interior of the foundation assembly 230 depicted in Figure 7. Here, a cable end 301 protrudes approximately 20 cm from the foundation 101 to be electrically connected within the vehicle charging station. The locking element 202 is removed, and the cable 300 protrudes through the ceiling opening 130. Figure 9 shows the schematically represented foundation assembly 230 from Figure 8 with the locking element 202 in place. The cable end 301 rests against the side wall 124, which is opposite the side opening 241 through which the cable 300 entered the foundation 101. Here, the cable end 301 lies essentially directly beneath the cover 200.

[0186] The length of cable 300, which is located within the foundation in Figure 9, essentially corresponds to the length of a circular arc in Figure 8, which is defined by the associated chord S through the entry E of cable 300 at the base plate 110 in the side opening 141 to the exit A from the ceiling opening 130 for a circular radius above the minimum permissible bending radius.

[0187] TIist, plus the cable end 301, which is located in the lid 200 and protrudes approximately 20 cm from the foundation 101.

[0188] The necessary additional length of the foundation 101 to accommodate the cable end 301 within the foundation 101 is essentially determined by the length of the cable 300 shown in Figure 8, which, when arranged inside the foundation 101, is divided into a section Al essentially parallel to the base plate 110, a section A2 which runs as close as possible to the base plate 110, and an intermediate circular arc section K with a minimum permissible bending radius.

[0189] With a relatively large minimum permissible bending radius, the sections Al and / or A2 can become very small, or even assume a length approaching zero.

[0190] Figures 11 and 12 show a further embodiment of a foundation assembly 240 according to the invention with a foundation 102 according to the invention. The differences to the foundations 100 and 101 according to the invention are described in detail below. Unless otherwise described below, the descriptions for foundation 100 according to Figure 1 and for foundation 101 according to Figure 5 also apply to foundation 102 according to Figure 11.

[0191] In Figure 11, the cuboid-shaped foundation body 180 is designed with a flat base plate 110.

[0192] The monolithic foundation base 180 is made of concrete.

[0193] The foundation body 180 comprises a top surface 115. Fasteners 190 are located in the top surface 115. A first set of fasteners 191 are used to secure a first, larger-dimensioned vehicle charging station. A second set of fasteners 192 are used to secure a second, smaller-dimensioned vehicle charging station. For clarity, only a portion of the fasteners 191 and 192 are labeled with reference numerals in Figures II and 12. The fasteners 191 and 192 are designed as threaded bushings. The vehicle charging station includes corresponding through-holes so that screws can be inserted through the through-holes into the threaded bushings to fasten the vehicle charging station to the foundation 102. Preferably, the vehicle charging station is designed as an HPC charging station.The foundation 102 includes a ceiling opening 130. At least one cable 300 is routed through the ceiling opening 130. Preferably, but not shown, several single-core cables are routed through the ceiling opening 130.

[0194] The foundation body 180 comprises a first side opening 141 and a second side opening 143. The side openings 141 and 143 are located in adjacent side walls 121 and 122 of the foundation body 180. The side walls 121 and 122 are of different sizes. Depending on how the cable 300 is routed, one of the side openings 141 or 143 is used to guide the cable 300 or multiple cables through it. In Figure 11, the cable 300 is shown by way of example through the second side opening 143. In the case of multiple cables, the cables are guided through one of the side openings 141 or 143.

[0195] The foundation body 180 comprises four side walls. As already mentioned, side walls 121 and 122 each include a side opening 141 and 143, respectively. The two other side walls, which face away from the viewing direction in Figure 11, are continuous, i.e., without a side opening. The two continuous side walls merge monolithically into one another.

[0196] A strut 1611, which defines the first side opening 141, transitions monolithically into the adjacent, continuous side wall. A strut 1632, which defines the second side opening 143, transitions monolithically into the other, adjacent continuous side wall.

[0197] Another strut 1612, which limits the first side opening 141, and another strut 1631, which limits the second side opening 143, together form a corner pier 172.

[0198] The fastening means 191, 192 are located in the end faces of the foundation base body 180. The struts 1611, 1612, 1631, 1632 are tapered. The side openings 141, 143 are closed by movable side wall elements 151, 153 when the side wall elements 151, 153 are in a first position, as shown in Figure 11.

[0199] In Figure 12, however, the side wall elements 151, 153 have been removed from the foundation body 180 and are in a second position. This means that the side openings 141, 143 are open at the top, so that the cable 300 can easily be inserted into one of the side openings 141, 143.

[0200] Unlike the embodiments shown in Figures 1 to 9, in the embodiment shown in Figures 11 and 12 the side wall elements 151, 153 are made of metal, in particular steel, and in particular of a sheet of steel. The side wall elements 151, 153 are identical. For the sake of clarity, individual areas or elements of the side wall elements 151, 153 are provided with corresponding reference numerals in Figures 11, 12 only in one of the side wall elements 151, 153.

[0201] The side wall elements 151 and 153 have a plate-shaped area 1500. The plate-shaped area 1500 of side wall element 151 rests against the outer surfaces of struts 1611 and 1612. The plate-shaped area of ​​side wall element 153 rests against the outer surfaces of struts 1631 and 1632. The respective outer surfaces of struts 1611, 1612, 1631, and 1632 serve as stops. The contact of the plate-shaped area 1500 with these stops prevents the side wall elements 151 and 153 from being pushed inwards by the soil around the foundation 102.

[0202] The side wall elements 151, 153 each have a central section 1510, which is designed to be positioned between the struts 1611, 1612 or 1631, 1632 in the corresponding side wall 121, 122, starting from the upper surface 115. The central section 1510 is trapezoidal and corresponds to the tapered struts 1611, 1612 or 1631, 1632. The central section 1510 is flush with the foundation body 180, so that the side wall 121, 122 is flat except for the plate-shaped section 1500.

[0203] The side wall elements 151, 153 have a rounded area 1520 in which the sheet steel is bent. The rounded area 1520 is directed towards the side opening 141, 143. This prevents the cable 300 from being damaged by sharp edges of the side wall element 151, 153.

[0204] The side wall elements 151, 153 have an upper area 1530 that is flush with the foundation base body 180 at the top 115. This results in the top 115 being essentially flat.

[0205] The upper section 1530 has a bend 1535. The bend 1535 rests in a recess 183. The contact of the bend 1535 in the recess 183 limits the movement of the side wall element 151, 153 towards the base plate 110. Additionally, the middle section 1510 can come into contact with the foundation body 180.

[0206] The depression 183 is surrounded by a recess 184, into which the crank 1535 is inserted.

[0207] This limits the inward and outward movement of the respective side wall elements 151, 153. Thus, the recess 184 acts as a positive locking element, and the projecting offset 1535 as a counter-locking element. A corresponding recess 184 is provided in the struts 1611 and 1632, but not in the struts 1612 and 1631. Threaded bushings are provided in the area of ​​the recess 183 as a further positive locking element. The offset 1535 includes corresponding through holes 1536 as counter-locking elements. Screws 1001 can be screwed into the threaded bushings through the through holes 1536 as fastening elements. This secures the side wall elements 151, 153 to the foundation body 180 and prevents inward and outward movement of the side wall elements 151, 153.

[0208] Each strut 1611, 1612, 1631, 1632 has a threaded bushing as a positive locking element.

[0209] Accordingly, each side wall element 151, 153 has two through holes 1536 as counter-locking elements.

[0210] Due to the offset 1535, the screws 1001 do not protrude beyond the top surface 115. If screws 1001 with a flat head are used, the offset 1535 can be omitted. The upper area 1530 can be flat, lie in the recess 184 and / or encompass the through holes 1536.

[0211] Figures 13 and 14 show two further embodiments of foundations 103, 104 according to the invention. The differences between these and foundations 100, 101, 102 according to the invention are described in detail below. Unless otherwise described below, the descriptions for foundation 100 according to Figure 1 also apply to foundations 103, 104 of Figures 13 and 14. Figure 15 shows a foundation base body 180 for foundations 103, 104. Figures 13 to 15 each show a large perspective view of foundation 103, 104 or foundation base body 180, respectively. Above the perspective view is a top view of foundation 103, 104 or foundation base body 180, respectively.

[0212] The foundation body 180 essentially corresponds to the foundation base body 180 shown in Figure 1. The monolithic foundation body 180 is made of concrete. The foundation base body 180 is cuboid in shape. Side openings 141, 142, 143, 144 are arranged in the foundation base body 180. The side openings 141, 142, 143, 144 of the foundation base body 180 are open at the top, allowing a cable to be inserted into the side openings 141, 142, 143, 144 from above.

[0213] The side openings 141, 142, 143, 144 are each surrounded by tapered struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642. Two struts together form a common corner pier 171, 172, 173, 174. Struts 1611 and 1642 form corner pier 171. Struts 1612 and 1631 form corner pier 172. Struts 1632 and 1621 form corner pier 173. Struts 1622 and 1641 form corner pier 174. See also the description in Figure 1.

[0214] Fasteners 190 are arranged in the upwardly directed strut end faces 117 of the struts forming corner pillars 171, 172, 173, 174 to secure a vehicle charging station. The fasteners 190 are designed as threaded bushings.

[0215] The side openings 141, 142, 143, 144 of the foundation body 180 are closed at the top in the foundation 103 according to the embodiment shown in Figure 14 by a first and a second side wall element 151, 152. The first and the second side wall element 151, 152 are in a first position.

[0216] The two side wall elements 151, 152 are identical and arranged as mirror images on the foundation base 180. Figure 13 shows both side wall elements 151, 152 in a top view. The second side wall element 152 is not shown in the perspective view of Figure 13. If the second side wall element 152 is added to the perspective view of Figure 13, it rests on the corner piers 172, 173 and is oriented towards the first side wall element 151.

[0217] In contrast to the foundation 100 of the embodiment shown in Figure 1, the side wall elements 151, 152 are made of steel, in particular sheet steel. The side wall elements 151, 152 rest on the strut end faces 117. This prevents the side wall elements 151, 152 from moving downwards. The side wall elements 151, 152 form the upper surface 115 of the foundation 103 on the outside. Thus, the vehicle charging station connects only to the side wall elements 151, 152. The side wall elements 151, 152 form the flat top surface.

[0218] On the inside, the side wall elements 151, 152 do not completely conceal the strut end faces 117, so that the strut end faces are visible in plan view. In plan view, the side wall elements 151, 152 surround a ceiling opening 130 through which the cable can be routed into the vehicle charging station.

[0219] The side wall elements 151, 152 are shaped such that, together with the struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642 and the side openings 141, 142, 143, 144, they form side walls 121, 122, 123, 124 of the foundation 103. In an upper section of the side walls, the side wall elements 151, 152 form the side walls 121, 122, 123, 124. In a lower section, however, the foundation body 180 forms the side walls. As a result, the side walls 121, 122, 123, 124 are only planar in certain sections, namely in the upper and lower sections. A step is formed between the upper section and the lower section. In other words, the side wall elements 151, 152, starting from the top 115, form the side walls 121, 122, 123, 124 of the foundation 103 in the upper section.

[0220] The side wall elements 151, 152 rest against the struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642. The struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642 thus serve as a stop, preventing the side wall elements 151, 152 from moving inwards.

[0221] In addition, the side wall elements 151, 152 include through holes 1536 as positive locking elements. Screws as fasteners can be screwed through the through holes 1536 into the threaded bushings 190. The threaded bushings thus serve as positive locking elements. The screws, which are screwed through the through holes 1536 into the threaded bushings 190, prevent inward and outward movement of the side wall elements 151, 152.

[0222] The screws are simultaneously guided through through holes in the vehicle charging station to fasten the charging station to the foundation 103. Thus, the threaded bushings 190 serve both as a positive locking element and as a fastening element.

[0223] The side wall elements 151 and 152 are jointly designed in a shoebox-like shape. Side wall element 151 covers the side openings 141, 142, and 144 in the upper section of side walls 121 and 122. Specifically, side wall element 151 covers side opening 144 and partially covers side openings 141 and 142. Side wall element 152 covers side opening 143 and partially covers side openings 141 and 142. Side wall elements 151 and 152 are directly adjacent to each other. In other words, side openings 141 and 142 are each partially covered by the first side wall element 151 and partially covered by the second side wall element 152.

[0224] The foundation 104 shown in Figure 15 corresponds essentially to the foundation 103, so that full reference is made to the description of the foundation 103. Instead of two side wall elements 151, 152, only one side wall element 151 is provided, which corresponds to the form and functions of the two side wall elements 151, 152 of the foundation 103. In other words, the two side wall elements 151, 152 of the foundation 103 are formed integrally in the foundation 104. Figure 10 shows a method 400 according to the invention for inserting a cable 300 into a foundation 100, 101, 102, 103, 104 according to the invention.

[0225] For foundation 101, the cover 200 is first removed from the foundation body 180 in process step 401. This step is omitted for foundations 100, 102, 103, and 104. In process step 402, a side wall element 151, 152, 153, or 154 of foundation 100, or a side wall element 151 or 152 of foundation 101, or a side wall element 151 or 153 of foundation 102, or a side wall element 151 or 152 of foundation 103, is removed from the first position.

[0226] Now, in process step 403, the cable 300 is inserted into the side opening 141, 142, 143, 144 of foundation 100, or into the side opening 141, 142 of foundation 101, or into the side opening 141, 143 of foundation 102, which is now open and accessible from the top 115. In foundation 103, the cable is inserted into the fully opened side opening. In foundation 104, the cable is inserted into one of the open side openings. In process step 404, the side wall element 151, 152, 153, 154 is reinserted into its initial position, thus closing the corresponding side opening 141, 142, 143, 144. If the vehicle charging station is to be installed immediately afterwards, in process step 405 the cable 300 is also led out of the ceiling opening 130 at the foundation 100.In process step 405, for foundation 101, the cable 300 is led upwards over the side walls 121, 122, 123, 124 out of the foundation body 180 with the cover 200 open.

[0227] In process step 406 of foundation 101, the locking element 202 is removed from the cover 200 and the cable 300 is pulled through the ceiling opening 130 in the cover 200.

[0228] Subsequently, in process step 407, the cover 200 is attached to the foundation base 180. Steps 406 and 407 are omitted for the foundation 100.

[0229] The foundation assembly 210, 220, 230, 240 has now been completed. The charging station assembly can then be installed by attaching the vehicle charging station to the mounting points 190 of foundation 100, or to the mounting points 191, or alternatively to the mounting points 192 of foundation 101, 102. The cable 300 is electrically connected inside the vehicle charging station. Additionally, a data cable can be routed through the side opening 141, 142, 143, 144 and the ceiling opening 130 into the interior of the vehicle charging station and electrically connected there. With foundation 101, it is possible to install the vehicle charging station at a later date. For this purpose, after process step 404, in a process step 408 the cable end 301 is insulated and arranged at the top inside the foundation 101 on the side wall opposite the side opening through which the cable 300 has entered.

[0230] In process step 409, the cover 200 is attached to the foundation base 180 with the locking element 202. The foundation assembly 210, 220, 230 is now complete. If the vehicle charging station is to be installed later, the cover 200 is removed from the foundation base 180 in process step 410, and then steps 405 to 407 are carried out.

Claims

1. Patent claims 1. Foundation (100, 101, 102, 103, 104) for a vehicle charging station for charging an electric vehicle with a base plate (110) and with side walls (121, 122, 123, 124), wherein the foundation (100, 101, 102, 103, 104) is designed with a ceiling opening (130) opposite the base plate in order to introduce a cable (300) into the vehicle charging station, characterized by the fact that at least one side wall (121, 122, 123, 124) of the side walls (121, 122, 123, 124) comprises struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642), wherein the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) are rigidly arranged to the base plate (110), wherein the foundation (100, 101, 102, 103, 104) comprises at least one side wall element (151, 152, 153, 154), wherein the side wall element (151, 152, 153, 154) is in a first The position is arranged such that a side opening (141, 142, 143, 144) for the passage of the cable (300) is formed between the side wall element (151, 152, 153, 154) and the base plate (110), which is limited by the side wall element (151, 152, 153, 154). wherein the side wall element (151, 152, 153, 154) is movably connected to the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642), so that when the side wall element (151, 152, 153, 154) is moved from the first position, the side opening (141, 142, 143, 144) opposite the base plate (110) is opened in order to insert the cable (300) into the side opening (141, 142, 143, 144).

2. Foundation (100, 101, 102, 103, 104) according to claim 1, wherein a foundation body (180) comprising the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) and the base plate (130) is formed as a cast body.

3. Foundation (100, 101, 102, 103, 104) according to one of the preceding claims, wherein the foundation (100, 101, 102, 103, 104) is formed with at least one stop against which the side wall element (151, 152, 153, 154) rests in the first position, thereby preventing the side wall element (151, 152, 153, 154) from being displaced inwards.

4. Foundation (100, 101, 102, 103, 104) according to one of the preceding claims, wherein the foundation (100, 101, 102, 103, 104) comprises at least one positive locking element (166, 184), and the side wall element (151, 152, 153, 154) comprises a counter-locking element (167, 1535, 1536), wherein the positive locking element (166, 184) and the counter-locking element (167, 1535, 1536) are configured to prevent the side wall element (151, 152, 153, 154) from being displaced inwards and outwards in the first position.

5. Foundation (100, 101, 102, 103, 104) according to one of the preceding claims, wherein the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) are each configured such that the side wall element (151, 152, 153, 154) is held in the first position, in particular between the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642), such that the side wall element (151, 152, 153, 154), opposite the base plate, is flush with the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) concludes, in particular that the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) each comprise an end stop (165, 183) against which the side wall element (151, 152, 153, 154) rests in the first position.

6. Foundation (100, 101, 102, 103, 104) according to one of the preceding claims, wherein the side wall element (151, 152, 153, 154) in the first position is formed at least partially outwards, flush with the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642).

7. Foundation (100, 101, 102, 103, 104) according to one of the preceding claims, wherein the foundation (100, 101, 102, 103, 104) has a length such that a cable end (301) of the cable (300), which in a first position protrudes 40 cm, preferably 30 cm, particularly preferably 20 cm, from the ceiling opening (130), can be arranged inside the foundation (100, 101, 102, 103, 104) in a second position, wherein a minimum permissible bending radius of the cable (300) can be maintained in both the first position and the second position.

8. Foundation (100, 101, 102, 103, 104) according to any one of the preceding claims, wherein the foundation (100, 101, 102, 103, 104) comprises fastening means (190, 191, 192) for attaching the vehicle charging station to the foundation (100, 101, 102, 103, 104) in different orientations relative to the foundation (100, 101, 102, 103, 104).

9. Foundation (100, 101, 102, 103, 104) according to any one of the preceding claims, wherein the foundation (100, 101, 102, 103, 104) comprises a cover (200), wherein in particular the cover (200) is designed with a movable locking element (202).

10. Foundation (100, 101, 102, 103, 104) according to one of the preceding claims, wherein at least two side walls (121, 122, 123, 124) of the side walls (121, 122, 123, 124), in particular opposing side walls, each comprise struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642), wherein the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) are each rigidly arranged to the base plate (110), wherein the foundation comprises several side wall elements (151, 152, 153, 154), each side wall element (151, 152, 153, 154) are each arranged in a first position such that a side opening (141, 142, 143, 144) for the passage of the cable (300) is formed between the respective side wall element (151, 152, 153, 154) and the base plate (110), which is limited by the respective side wall element (151, 152, 153, 154). wherein each side wall element (151, 152, 153, 154) is designed to be movable, so that when the respective side wall element (151, 152, 153, 154) is moved, the corresponding side opening (141, 142, 143, 144) of the base plate (110) opposite is opened in order to insert the cable (300) into the side opening (141, 142, 143, 144).

11. Foundation (100, 101, 102, 103, 104) according to claim 10, wherein all side walls (121, 122, 123, 124) are each formed with struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) and a side wall element (151, 152, 153, 154).

12. Foundation (100, 101, 102, 103, 104) according to claim 10, wherein two, in particular opposing, side walls (121, 122, 123, 124) are formed with struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) and a side wall element (151, 152, 153, 154) and two further side walls (121, 122, 123, 124) are formed as a continuous wall.

13. Foundation assembly (210, 220, 230, 240) comprising a foundation (100, 101, 102, 103, 104) according to any one of claims 1 to 12 and comprising a cable (300), wherein the cable is arranged inside the foundation (100, 101, 102, 103, 104).

14. Charging station assembly comprising a foundation assembly (210, 220, 230, 240) according to claim 13, and comprising a charging station, wherein the charging station is attached to the foundation (100, 101, 102, 103, 104), wherein in particular the cable (300) is introduced from the side opening (141, 142, 143, 144) through the ceiling opening (130) into the vehicle charging station.

15. Method (400) for arranging a cable (300) in a foundation (100, 101, 102, 103, 104), wherein the foundation (100, 101, 102, 103, 104) is configured according to any one of claims 1 to 12, the method comprising the following steps: • Inserting (403) the cable (300) into the opened side opening (141, 142, 143, 144) • Moving (404) the side wall element (151, 152, 153, 154) into the first position.

16. Method (400) according to claim 15, wherein the foundation (100, 101, 102, 103, 104) comprises a cover (200), wherein the method (400) comprises the following steps: • Arranging (408) a cable end (301) in the foundation (100, 101, 102, 103, 104) • Transferring (409) the cover (200) into the closed state.

Images