Foundation for a vehicle charging station

Abstract

The invention relates to a foundation (100, 101) for a motor vehicle charging station for charging an electric motor vehicle, comprising a base plate (110) and side walls (121, 122, 123, 124), wherein the foundation (100, 101) is designed with a ceiling opening (130) opposite the base plate in order to introduce a cable (300) into the motor vehicle charging station. According to the invention, 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) comprises at least one side wall element (151, 152, 153, 154), wherein the side wall element (151, 152, 153, 154) is arranged in a first position such that between the side wall element (151, 152, 153, 154) and the base plate (110) a through the side wall element (151, 152, 153,154) limited side opening (141, 142, 143, 144) is designed for the passage of the cable (300), wherein the side wall element (151, 152, 153, 154) is movably designed relative 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).

Description

[0001] 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.

[0002] 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 up to 60 mm, making them rather inflexible. If the foundation is already embedded in the ground, it becomes difficult to insert the cable through the side opening.

[0003] Document DE10 2021 103 912 A1 discloses a foundation for a charging station, composed of several elements made of plastic and metal. The foundation's wall elements have predetermined breaking points through which electrical cables can be inserted at various locations.

[0004] Document DE 20 2018 105 349 U1 discloses a foundation for a charging station, which is assembled from several wall sections. Trapezoidal side walls have openings for routing cables.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] The foundation comprises at least one side wall element. In a first position, the side wall element is arranged such that a lateral opening for the cable is formed between the side wall element and the base plate, defined by the side wall element. In this case, the side wall element specifically defines the lateral opening opposite the base plate. In particular, the struts can laterally define the lateral opening. It is possible that the side wall element is arranged between the struts in the first position.

[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 the first position, the side opening opposite the base plate is opened to allow the cable to be inserted into the side opening.

[0010] The side wall element can, for example, be designed to be removable, so that it can be set aside during assembly and, after the cable has been inserted into the rest of the foundation, inserted into the first position. The removed side wall element is then in a second position.

[0011] 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.

[0012] 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, at least to conduct electrical current for charging a vehicle battery.

[0013] 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.

[0014] 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.

[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. The vehicle charging station may contain electrical components such as switches or meters and / or an electronic device. The vehicle charging station may also include 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 could be electric cars or ships.

[0019] 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.

[0020] 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.

[0021] 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. These four side walls can be configured as two pairs of opposing side walls.

[0022] The foundation may be essentially cuboid in shape.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] In particular, the side wall element is arranged to be movable relative to the struts in such a way that the side wall element can be moved from the first position, so that the foundation between the struts, opposite the base plate, is open in order to insert the cable between the struts.

[0028] Preferably, the struts can form a side wall of the foundation together with the side wall element and the side opening.

[0029] 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.

[0030] It is possible for the struts to be formed in one piece and / or of the same material as the base plate. In particular, the struts are formed monolithically with the base plate.

[0031] For example, the foundation can comprise a foundation body. The foundation body includes the struts and the base plate. Preferably, the foundation body is designed as a single cast body.

[0032] It may be provided that the side wall element is made of the same material as the struts and / or the base plate.

[0033] Preferably, the foundation base and / or the side wall element are made of non-conductive material. It is conceivable that the foundation base is made of concrete. It is also possible that the side wall element is made of concrete.

[0034] Preferably, the foundation is designed with at least one stop against which the side wall element rests in its 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 its first position to prevent inwards shifting. In particular, it can be provided that each strut includes a stop against which the side wall element rests, thus preventing inwards shifting of the side wall element.

[0035] The foundation may be designed to include at least one positive locking element, and 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 its first position. Thus, the positive locking element and the counter-positive locking element prevent the side wall element from moving inwards into the foundation or outwards out of the foundation in its 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 its first position. Therefore, the soil cannot push the side wall element inwards or outwards from the foundation in its first position.

[0036] For example, the positive locking element and the counter-positive locking element can be designed as a tongue and groove connection.

[0037] 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 a 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 projection that engages in a groove of the side wall element.

[0038] The stop can be designed as part of the positive locking element. For example, the stop can be designed as the outwardly facing part of the projection.

[0039] Preferably, the foundation is designed such that the side wall element is held in the first position, particularly in a positive-locking manner, so that the side wall element, opposite the base plate, is flush with the struts and / or the foundation body. Thus, the side wall element can be flush with the struts and / or the foundation body on the upper side. 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. Particularly preferably, the foundation can include several end stops that limit movement of the side wall element 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 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 finish of the side wall element with the struts and / or the foundation base ensures a level ground surface.

[0040] For example, the struts are each designed such that the side wall element is held in the first position between the struts in such a way that the side wall element, opposite the base plate, is flush with the struts. In this respect, the struts can, in particular, hold the side wall element in the first position in a form-fitting manner. Specifically, the struts can each include an end stop against which the side wall element rests in the first position.

[0041] Preferably, the side wall element has a trapezoidal outline. The struts may taper from the base plate.

[0042] Preferably, the side wall element in the first position 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 asphalt, paving stones, or slabs, is planned around the foundation at ground level.

[0043] 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.

[0044] 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 the point where it enters the side opening does not change in the first or second position. 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.

[0045] 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.

[0046] 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.

[0047] The foundation comprises a top surface opposite the base plate. Preferably, the foundation includes fastening means on its top surface 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.

[0048] It is conceivable that the top surface is at least partially formed by the end faces of the side walls. The top surface may be partially formed by an end face of at least one side wall element. The top surface may be partially formed by a strut end face of the struts. It is possible that the fastening elements are at least partially located on the end faces.

[0049] The foundation may include fasteners to attach the vehicle charging station to the foundation in different orientations. Specifically, the foundation may be designed to provide fasteners to secure 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.

[0050] The foundation may be designed to include a cover. Preferably, the cover closes the base of the foundation.

[0051] 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.

[0052] In particular, the cover can be designed to be removed from the foundation base.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] The foundation may be designed to include connecting elements for attaching 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.

[0060] The cover can be made of the same material as the foundation base and / or the side wall element. For example, the cover can be made of a non-conductive material, especially concrete.

[0061] 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.

[0062] It may be designed so that the lid encompasses the ceiling opening.

[0063] 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.

[0064] The foundation may be designed to include several side openings. These openings can be provided to allow the cable to be inserted into the foundation from different directions. Preferably, the multiple side openings serve to insert a first and a second cable into the foundation. The two cables form a main line, from which a branch line for charging the vehicle is drawn within the vehicle charging station. This allows several vehicle charging stations to be connected in series to the main line.

[0065] 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.

[0066] 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.

[0067] Preferably, each side wall element of the multiple side wall elements is designed as already described for the side wall element within the scope of this disclosure.

[0068] 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 opening. The respective side wall element can be arranged between the struts in the first position.

[0069] 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.

[0070] The multiple side wall elements can be moved independently of one another. 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 into its original position. Preferably, several side wall elements are moved aside during assembly to allow multiple cables to be inserted into the foundation.

[0071] Preferably, each side opening is laterally limited by the struts.

[0072] The multiple side wall elements are preferably arranged in a first position 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.

[0073] The multiple side wall elements can be made of the same material as each other. The multiple side wall elements can also be made of the same material as the struts and / or the foundation base.

[0074] The multiple side wall elements can each comprise at least one counter-locking element, preferably several counter-locking elements.

[0075] In the first position, the multiple side wall elements can each be designed to be flush with the struts and / or the foundation base.

[0076] The multiple side wall elements can each encompass a trapezoidal outline.

[0077] It may be provided that opposing side wall elements are of identical construction.

[0078] 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. The foundation, especially the struts, 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.

[0079] The foundation body can encompass all struts. All struts can be connected to the base plate in one piece and / or with a single material, in particular monolithically.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] As an alternative to the embodiment in which each side wall comprises a side wall element, it can be provided that at least two opposing 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. This embodiment is preferably intended for AC charging stations. Preferably, exactly two opposing side walls are formed with a side wall element and exactly two further side walls are formed without a movable side wall element.

[0087] 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.

[0088] If at least two side walls are designed without a movable side wall element, the end faces of the side walls, particularly those without a side wall element, may include fastening means for attaching the vehicle charging station to the foundation. Preferably, the cover includes fastening means for a first 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.

[0089] If at least two side walls are designed without a movable side wall element, the base plate preferably includes at least the recess through which at least one fork of a forklift can be guided.

[0090] 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.

[0091] The cable can be a NYM cable or an underground cable, in particular a 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 most preferably 35 mm.

[0092] Preferably, a first and a second cable are arranged in the foundation. The first and second cables serve to be electrically connected to each other within the vehicle charging station, so that they 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.

[0093] It is possible for the first and second cables to be inserted through different side openings. Preferably, the side opening for the first cable is located opposite the side opening for the second cable.

[0094] In the foundation assembly, at least one cable is arranged in the side opening. If a first and a second cable are provided, the first and second cables are preferably each arranged in a side opening, or preferably in several side openings. The side wall element(s) are in the first position.

[0095] 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.

[0096] At least one cable has been inserted into the vehicle charging station through the ceiling opening.

[0097] The vehicle charging station is preferably attached to the foundation's fastening elements. Preferably, the vehicle charging station is attached to several fastening elements, at least three or at least four. In particular, the vehicle charging station includes corresponding counter-fastening elements, especially holes for passing screws. The counter-fastening elements are preferably arranged inside the vehicle charging station.

[0098] It may be designed so that the vehicle charging station at least partially covers the side wall element(s). This is particularly relevant for AC charging stations. Alternatively, the vehicle charging station may be positioned at a distance from the side wall elements. This is particularly relevant for DC charging stations.

[0099] Preferably, the vehicle charging station should be attached to the foundation with virtually no gaps.

[0100] Preferably, at least one branch line is arranged in the vehicle charging station. If two 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.

[0101] Preferably, the vehicle charging station includes an electronic device.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] According to the invention, the method comprises the following steps: • Inserting the cable into the foundation with the side opening open. • Movement of the side wall element into the first position.

[0107] Preferably, the cable is inserted from above into the foundation laid in the ground. Preferably, the cable is inserted from the top of the foundation into the open side opening.

[0108] It may be necessary to install multiple cables in the foundation. In this case, the cables are preferably inserted into different, open side openings. The corresponding side wall elements are then moved into the first position.

[0109] Before the process step of inserting at least one cable, the side wall element is preferably removed from the first position.

[0110] When inserting multiple cables, preferably a first side wall element is removed to insert the first cable. Preferably, a second side wall element is 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.

[0111] If the foundation is designed with a cover, the following steps should preferably be carried out before the cable is laid: • Removing the cover from the rest of the foundation, • Moving at least one side wall element from the first position.

[0112] 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.

[0113] If the vehicle charging station is to be installed immediately afterwards, the cable is led out of the foundation through the ceiling element.

[0114] 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.

[0115] In particular, 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 • Moving the lid into the closed position.

[0116] Preferably, the locking element remains in the lid if the vehicle charging station has not yet been installed.

[0117] 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.

[0118] 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. They show: Fig. 1 a perspective view of a foundation according to the invention in a first embodiment, Fig. 2 an exploded view of the foundation made of Fig. 1, Fig. 3 a foundation assembly according to the invention with a foundation made of Fig. 1, Fig. 4 an alternative foundation assembly with a foundation made of Fig. 1, Fig. 5 a perspective view of a foundation according to the invention in a second embodiment of the invention, Fig. 6 an exploded view of the foundation made of Fig. 5, Fig. 7 a foundation assembly according to the invention with a foundation made of Fig. 5, Fig. Figure 8 shows a schematic representation of a foundation assembly according to the invention with a protruding cable. Fig. Figure 9 shows the schematic representation from Fig. 8 with a cable end arranged in the foundation and Fig. 10 a method according to the invention.

[0119] In Fig. Figure 1 shows a first embodiment of a foundation 100 according to the invention. The foundation 100 is preferably intended for AC charging stations.

[0120] The foundation 100 includes a base plate 110. The base plate 110 is designed to be flat.

[0121] In the Fig. In sections 1 to 4, the foundation 100 is oriented as it is laid in the ground. The base plate 100 is oriented downwards. An opposite top 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 text.

[0122] Foundation 100 is cuboid in shape. Thus, foundation 100 comprises four side walls, of which in Fig. 1 each of the two side walls 121, 122 are visible from the outside.

[0123] 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, 122. To insert the cable 300 into the vehicle charging station, the cable 300 protrudes from the ceiling opening 130, as shown in the Fig. 3 and Fig. 4 is shown.

[0124] The foundation 100 comprises four side openings 141, 142, 143, 144, of which in Fig. 1 Two side openings 141, 142 are fully visible and two further side openings 143, 144 are partially visible (see also Fig. 2).

[0125] The foundation 100 comprises four movable side wall elements 151, 152, 153, 154. According to the invention, the side wall elements 151, 152, 153, 154 can assume a first position which is in the Fig. 1, Fig. 3 and Fig. Figure 4 shows that in the 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 the 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 4. Fig. Figure 2 illustrates this. 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 into its initial position, closing the side opening 141, 142, 143, 144. 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 its initial position.

[0126] 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. Fig. 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 in Fig. 2 is particularly well illustrated. The struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642 taper upwards.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] The side wall elements 151, 152, 153, and 154 have a trapezoidal outline. Opposing side wall elements 151, 152 and 153, 154 are identical in construction. Side wall elements 151, 152, 153, and 154 are also made of concrete.

[0131] The corner pillars 171, 172, 173, 174 contain fastening elements 190 designed as threaded bushings, which are located in the Fig. Items 1 to 3 are only partially labelled for clarity. Fasteners 190 are used to attach a vehicle charging station.

[0132] 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, when installed, to essentially cover the foundation 100.

[0133] The side wall elements 151, 152, 153, 154 and the corner pillars 171, 172, 173, 174 together form the top surface 115 of the foundation 100. The side wall elements 151, 152, 153, 154 have corresponding element end surfaces 116, and the corner pillars 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.

[0134] 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.

[0135] To ensure that the side wall elements 151, 152, 153, 154 are flush with the foundation body 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 its first position. The end stop 165 positively limits downward movement of the side wall element 151, 152, 153, 154. Fig. The end stops 165 for side wall element 153 are marked with reference numbers. For clarity, the end stops 165 for the remaining side wall elements 151, 152, and 154 are not marked with reference numbers.

[0136] 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.

[0137] The struts 1611, 1612, 1621, 1622, 1631, 1632, 1641, and 1642 each comprise a positive-locking element 166. The positive-locking element 166 is designed as a projection. The side wall elements 151, 152, 153, and 154 each comprise 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, and 154, the projection 166 engages positively in the corresponding groove 167. This prevents the side wall elements 151, 152, 153, and 154 from sliding 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 the sake of clarity, in Fig. 2 only a part of the positive locking elements 166 and counter-positive locking elements 167 are provided with reference numerals.

[0138] In the Fig. 3 and Fig. Figure 4 shows foundation assemblies 210 and 220, in which a cable 300 is arranged in the foundation 100. In the embodiment according to Fig. 3 The side wall element 152 has been removed from the first position in order to insert the cable 300 into the side opening 142. In the alternative embodiment according to Fig. In step 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 ground in the vehicle charging station.

[0139] In Fig. 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 embodiments for the foundation 100 apply. Fig. 1 also for foundation 101 according to Fig. 5, to which reference is made. Accordingly, the same reference numerals are used where possible. The following section primarily describes the differences from the first embodiment.

[0140] The base plate 110 of the foundation 101 includes recesses 111, 112, through which the forks of a forklift truck can be guided.

[0141] The foundation 101 comprises two opposing side openings 141, 142, of which in Fig. 5 a side opening 141 is visible in the side wall 121. Two side walls 122, 123 are designed without a side opening, of which in Fig. 5 a side wall 122 is fully shown.

[0142] 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, in Fig. 6. Side opening shown.

[0143] 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 Fig. 6) Here, struts 1611 and 1622 transition into side wall 123. Struts 1612 and 1621 transition into side wall 122.

[0144] 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.

[0145] 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 top and outside. Fig. Figure 6 shows only the end stops 165 of struts 1611 and 1612. The end stops 165 of struts 1621 and 1622 are hidden.

[0146] 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.

[0147] The lid 200 is made of concrete.

[0148] The identically designed side wall elements 151, 152 each include a step 155 on which the cover 200 rests, as in Fig. Figure 6 shows the foundation body. The foundation body also comprises 180 steps on which the cover 200 rests. Step 181, which adjoins the side wall 123 and the struts 1611, 1622, is shown in Fig. Figure 6 shows a similar, but not shown, section adjoins the side wall 122 and the struts 1612, 1621. Connecting elements 182, designed as threaded bushings, are arranged in the sections 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.

[0149] 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.

[0150] 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.

[0151] If the fasteners 191 are mentally connected, a first rectangle is formed. If the fasteners 192 are mentally connected, a second rectangle is formed.

[0152] The lid 200 encompasses the ceiling opening 130, see. Fig. 6.

[0153] The cover 200 is equipped with a locking element 202. The locking element 202 allows the foundation 101 to be laid 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.

[0154] 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.

[0155] Fig. 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 so that the cable could be inserted from above. Subsequently, the side wall element 151 was reinserted into the opening 141. Fig. The first position shown in section 7 is used.

[0156] 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 process. For this purpose, the foundation 101 is dimensioned such that a cable end 301 can be positioned in the foundation with a sealed top 115 while maintaining the minimum permissible bending radius.

[0157] The Fig. 8 and Fig. Nine illustrate this relationship schematically. Purely schematically, the Fig. 8 the interior of the in Fig. The foundation assembly 230 shown in Figure 7 is shown. Here, a cable end 301 protrudes approximately 20 cm from the foundation 101 in order to be electrically connected inside the vehicle charging station. The locking element 202 has been removed, and the cable 300 protrudes through the ceiling opening 130. Fig. Figure 9 shows the schematically represented foundation assembly 230. Fig. 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 under the cover 200.

[0158] The cable length is 300, which is located in Fig. 9 within the foundation, essentially corresponds to the length of a circular arc in Fig. 8, which is defined by the associated circular chord S through the entry E of the 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, plus the cable end 301, which is located in the cover 200 and protrudes approximately 20 cm from the foundation 101.

[0159] The necessary additional length of the foundation 101 to accommodate the cable end 301 within the foundation 101 results essentially from the length of the cable 300. Fig. 8, which, when it is arranged inside the foundation 101, is divided into a section A1 substantially parallel to the base plate 110, a section A2 which runs as close as possible to the base plate 110 perpendicular to it, and an intermediate circular arc section K with a minimum permissible bending radius.

[0160] With a relatively large minimum permissible bending radius, sections A1 and / or A2 can become very small, or even assume a length approaching zero.

[0161] Fig. Figure 10 shows a method 400 according to the invention for inserting a cable 300 into a foundation 100, 101 according to the invention.

[0162] For foundation 101, the cover 200 is first removed from the foundation base 180 in process step 401. This step is omitted for foundation 100.

[0163] In process step 402, a side wall element 151, 152, 153, 154 of the foundation 100 or a side wall element 151, 152 of the foundation 101 is removed from the first position.

[0164] Now, in a process step 403, the cable 300 is inserted into the side opening 141, 142, 143, 144 of the foundation 100 or into the side opening 141, 142 of the foundation 101, which is now open and accessible from the top 115.

[0165] In process step 404, the side wall element 151, 152, 153, 154 is reinserted into the first position, so that the corresponding side opening 141, 142, 143, 144 is closed.

[0166] If the vehicle charging station is to be installed immediately afterwards, then in process step 405 the cable 300 is also led out of the ceiling opening 130 at the foundation 100. At foundation 101, in process step 405, with the cover 200 open, the cable 300 is led upwards over the side walls 121, 122, 123, 124 and out of the foundation body 180.

[0167] For foundation 101, in process step 406, 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. Subsequently, in process step 407, the cover 200 is attached to the foundation base 180. For foundation 100, steps 406 and 407 are omitted.

[0168] The foundation assembly 210, 220, 230 is now complete. The charging station assembly can then be constructed by attaching the vehicle charging station to the fasteners 190 of foundation 100, or to the fasteners 191, or alternatively to the fasteners 192 of foundation 101. The cable 300 is electrically connected inside the vehicle charging station. Additionally, a data cable can be routed through the side openings 141, 142, 143, 144 and the ceiling opening 130 into the interior of the vehicle charging station and electrically connected there.

[0169] With foundation 101, it is possible to install the vehicle charging station at a later date. For this purpose, after process step 404, in process step 408 the cable end 301 is insulated and positioned at the top inside foundation 101 on the side wall opposite the side opening through which the cable 300 entered.

[0170] In process step 409, the cover 200 is attached to the foundation base body 180 with the locking element 202. The foundation assembly 210, 220, 230 is now manufactured.

[0171] If the vehicle charging station is to be installed later, in process step 410 the cover 200 is removed from the foundation base body 180 and then steps 405 to 407 are carried out.

Claims

[1] Foundation (100, 101) for a motor vehicle charging station for charging an electric motor vehicle with a base plate (110) and with side walls (121, 122, 123, 124), wherein the foundation (100, 101) 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 , 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) comprises at least one side wall element (151, 152, 153, 154), wherein the side wall element (151, 152, 153, 154) is arranged in a first position such that between the side wall element (151, 152, 153, 154) and the base plate (110) a side opening (141, 142, 143, 144) for the passage of the cable (300) is formed by the side wall element (151, 152, 153, 154), wherein the side wall element (151, 152, 153, 154) is movably formed relative 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 to insert the cable (300) into the side opening (141, 142, 143, 144). [2] Foundation (100, 101) according to claim 1, wherein a foundation body (180) comprising the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642) and the base plate (110) is formed as a cast body. [3] Foundation (100, 101) according to one of the preceding claims, wherein the foundation (100, 101) 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) according to one of the preceding claims, wherein the foundation (100, 101) comprises at least one positive locking element (166) and the side wall element (151, 152, 153, 154) comprises a counter-locking element (167), wherein the positive locking element (166) and the counter-locking element (167) are designed to prevent the side wall element (151, 152, 153, 154) from being displaced inwards and outwards in the first position. [5] Foundation (100, 101) 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 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) against which the side wall element (151, 152, 153, 154) rests in the first position. [6] Foundation (100, 101) according to one of the preceding claims, wherein the side wall element (151, 152, 153, 154) is formed in the first position planar to the outside with respect to the struts (1611, 1612, 1621, 1622, 1631, 1632, 1641, 1642). [7] Foundation (100, 101) according to one of the preceding claims, wherein the foundation (100, 101) 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) 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) according to one of the preceding claims, wherein the foundation (100, 101) comprises fastening means (190, 191, 192) to fasten the motor vehicle charging station to the foundation (100, 101) in different orientations to the foundation (100, 101). [9] Foundation (100, 101) according to one of the preceding claims, wherein the foundation (100, 101) comprises a cover (200), wherein in particular the cover (200) is formed with a movable locking element (202). [10] Foundation (100, 101) 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), wherein each side wall element (151, 152, 153, 154) is 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), the side opening being 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) the corresponding 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). [11] Foundation (100, 101) 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) according to claim 10, wherein two 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) comprising a foundation (100, 101) according to one of claims 1 to 12 and comprising a cable (300), wherein the cable is arranged inside the foundation (100, 101). [14] Charging station assembly with a foundation assembly (210, 220, 230) according to claim 13, and with a charging station, wherein the charging station is attached to the foundation (100, 101), 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), wherein the foundation (100, 101) is designed 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) • Move (404) the side wall element (151, 152, 153, 154) to the first position. [16] Method (400) according to claim 15, wherein the foundation (100, 101) comprises a cover (200), wherein the method (400) comprises the following steps: • Arranging (408) a cable end (301) in the foundation (100, 101) • Transferring (409) the lid (200) into the closed position.

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