Charging station for charging the battery of electric vehicles

Abstract

Charging station for charging the battery of electric vehicles, with a housing (1) made of concrete, accommodating electronic installations, which can be opened for repair and maintenance purposes, wherein the housing (1) comprises a base part (4) and an upper housing part (5) sitting on the base part (4), and with devices for lifting the upper housing part (5) from the base part (4) while opening the housing (1), characterized in that the concrete of the housing (1) is fine-grain concrete, that the base part (4) is pot-shaped with a stepped pot edge surface and that the upper housing part (5) sits on the stepped pot edge surface with a complementary opening edge surface.

Description

The invention relates to a charging station for charging the battery of electric vehicles, having a housing which has concrete and accommodates electrical installations and can be opened for repair and maintenance purposes, the housing comprising a base part and a housing upper part which is seated on the base part, and having devices for lifting the housing upper part from the base part with the housing being opened.A charging station which has a thin-walled housing made of fine concrete is described in German patent application DE 10 2015 112 721 A1 and in WO 2016 / 034 170 A1. A charging station of the above-mentioned type is known from CN 1 04 300 649 A. The housing of this known charging station has a foundation made of concrete, which is embedded in the support floor and which closes an opening in the manner of a cover, which is formed on the underside of the upper housing part.Compared with this prior art, the present invention provides a novel charging station of the type mentioned at the beginning, which is characterized in that the concrete of the housing is fine concrete, in that the base part is formed in the shape of a pot with a stepped pot edge surface, and in that the upper housing part rests on the stepped pot edge surface with a complementary opening edge surface.The invention advantageously provides a concrete housing which can be used outdoors under weather influences and which, despite the possibility of opening, closes tightly, can be opened and closed off again tightly with little outlay. The interior space of the housing which can be divided by lifting is easily accessible for repair and maintenance purposes.Expediently, the charging station further comprises devices for holding the upper housing part in a lifted position above the base part.In a preferred embodiment of the invention, the housing is designed rotationally symmetrically at least in a connecting region between the base part and the upper housing part. This configuration advantageously facilitates the placement of the upper housing part on the base part, wherein the upper housing part is preferably seated on the base part via a sealing ring made of elastomer material.While a mounting eye for engaging a crane hook could be provided as the simplest solution for the lifting devices and the mounting devices, said mounting eye being attached to the upper side of the housing, in a preferred embodiment of the invention the lifting devices have a rack and pinion and / or spindle drive.The spindle of the spindle drive or the rack of the rack drive preferably coincides with the axis of rotation of the rotationally symmetrical part of the upper housing part and of the base part.In a further preferred embodiment of the invention, the lifting devices are provided for actuation by a turning tool which can be attached to the charging station from the outside. The turning tool, which is expediently rotatable by a battery-operated hand drill, can engage, for example, in a front recess in a drive shaft.In particular, the lifting devices comprise a transmission connected to the base or upper housing part, from which an input shaft extends to a bearing bush in the housing wall and / or from which a spindle extends as output shaft.Expediently, the gear is attached to a base plate of the base part.The devices for holding the upper housing part in the raised position above the base part can in the simplest case be formed by a high reduction ratio of the gear mechanism.The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawings relating to this exemplary embodiment. The following are shown: FIG. 1 shows a charging station according to the invention with the upper housing part placed on and raised, FIG. 2 shows a sectional partial illustration of the charging station from FIG. 1, FIG. 3 is a diagram explaining the connection between an upper housing part and a base housing part of the charging station of FIG. 1 ; and FIG. 4 is a diagram explaining the arrangement of installations within the charging station of FIG. 1.A charging station for charging the battery of electric vehicles comprises a housing 1, which in the example in question is made of fine concrete with relatively thin walls, for example in the form of a known board toy figure. On a head part 2 of the charging station suitable for use outdoors, four connection sockets for charging cables are provided at an angular spacing of 90°.The multi-part housing 1 comprises a base part 4 and an upper housing part 5 which rests on the base part 4 and forms the head part 2 of the charging station. At its lower end, the base part 4 has an annular flange 6 which serves for anchoring the charging station to the base and is cast in one piece with the remaining base part from fine concrete. The diameter of the base part is approximately 450 mm in the example shown.At the upper end of the base part 4 an annular shoulder 7 is formed on which a sealing ring 8 of elastomer material, shown in section in FIGS. 1 band 3, rests. As can also be seen from FIG. 3, the upper housing part 5 has at its lower end an annular shoulder 9 complementary to the annular shoulder 7. It is understood that the end sections of the base part 4 or of the upper housing part 5 forming the annular shoulders 7, 9 can have a centering bevel which facilitates the placement of the housing part 5 on the base part 4.As can be seen from FIG. 2, a gear 11 (shown schematically) is located on a base plate 10 of the base part 4 connected to the annular flange 6, a drive shaft 12 extending from the gear 11 and being mounted at its end facing away from the gear 11 in a bushing 13 cast into the housing wall and having an engagement opening (not shown) for a turning tool at the free end facing away from the gear 11.An output shaft of the gear 11 in the form of a spindle 14 runs vertically along the central axis 15 of the housing 1. the spindle 14 axially fixed in the gear 11 is in engagement with a spindle nut 16, which is schematically illustrated in FIG. 3 and is connected to the upper housing part 5 via retaining parts 17, 18 cast into the housing wall. Guide devices which prevent co-rotation of the upper housing part 5 with the spindle 14 are not shown in the figures.In FIG. 4 a space area 19 is indicated within the housing 1, which contains the essential electrical installation of the charging stations and must be accessible for maintenance and repair purposes.In the case of such work, the housing 1 is opened by rotating the drive shaft 12, if necessary after releasing an opening lock (not shown), for example with the aid of a battery-operated hand-held power tool. The greatly reducing gear 11 comprising a worm drive sets the spindle 14 in rotation, so that the spindle nut 16 moves translationally in the direction of the spindle axis and the upper housing part 5 lifts from the base part 4. The installation area 19 outlined in FIG. 4 is then released. By means of the greatly reducing gear 11, the upper housing part 5 is held stably in the raised position.After the completion of necessary work, the upper housing part 5 is lowered again by rotating the drive shaft 12 in the opposite direction. The mentioned centering bevels of the end sections of the upper housing part and of the base part prevent undesired tilting between the parts. After the upper housing part 5 has been placed on the base part 4, an end shut-off device (not shown) can ensure that a further rotation of the spindle 14 is prevented.

Claims

Charging station for charging the battery of electric vehicles, having a housing (1) which has concrete and accommodates electrical installations and can be opened for repair and maintenance purposes, the housing (1) comprising a base part (4) and a housing upper part (5) which is seated on the base part (4), and having devices for lifting the housing upper part (5) from the base part (4) with opening of the housing (1), characterized in that the concrete of the housing (1) is fine concrete, in that the base part (4) is formed in the shape of a pot with a stepped pot edge surface, and in that the housing upper part (5) is seated on the stepped pot edge surface with a complementary opening edge surface.Charging station according to claim 1, characterised in that devices are also provided for holding the upper housing part (5) in a raised position above the base part (4).Charging station according to claim 1 or 2, characterised in that the housing (1) is formed rotationally symmetrically at least in a connecting region between the base part (4) and the upper housing part (5).Charging station according to one of Claims 1 to 3, characterized in that the lifting devices comprise a rack and pinion and / or spindle drive.Charging station according to claim 4, characterised in that the spindle (14) of the spindle drive or the rack of the rack drive coincides with the axis of rotation.Charging station according to one of Claims 1 to 5, characterized in that the lifting devices are provided for actuation by a turning tool which can be attached to the charging station from the outside.Charging station according to one of Claims 1 to 6, characterized in that the lifting devices comprise a transmission (11) which is connected to the base or upper housing part (4, 5) and from which an input shaft (12) extends to a bushing (13) in the housing wall.Charging station according to claim 7, characterised in that a spindle (14) extends from the gear (11) as an output shaft.Charging station according to claim 7 or 8, characterised in that the gear mechanism (11) is mounted on a base plate (10) of the base part (4).Charging station according to one of Claims 7 to 9, characterized in that the devices for holding the upper housing part (5) in the raised position above the base part (4) are formed by a high reduction ratio of the transmission (11).Charging station according to one of Claims 1 to 10, characterized in that the upper housing part (5) is seated on the housing part (4) via a sealing ring (8).

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