WO2013152381A2

WO2013152381A2 - Charging connection device for electric vehicles

Info

Publication number: WO2013152381A2
Application number: PCT/AT2013/050087
Authority: WO
Inventors: Reinhard Gottlieb Starzinger; Gerhard WEIDINGER; Dirk Quardt; Elke Herbote
Original assignee: Keba Ag
Priority date: 2012-04-13
Filing date: 2013-04-10
Publication date: 2013-10-17
Also published as: WO2013152381A3; DE202012101364U1

Abstract

The invention relates to a charging connection device (1) for electric vehicles, comprising at least one first interface (10) for feeding electrical energy from a stationary power supply network into the charging connection device (1), comprising at least one second interface (12) for controlled output of electrical energy to an electric vehicle, comprising a plurality of electro-technical components (2) for switching, measuring or monitoring the received and/or the output electrical energy and comprising a multi-part housing (3) enclosing the electro-technical components (2). At least one first housing part (16) of the housing (3), which defines at least subsections of the front face (18) of the housing, is formed as an injection moulded plastic part (24). In addition, at least one structurally independently formed moulded part (38) comprising a plurality of plastic webs (43-45) is arranged in the interior of the housing (3), wherein at least individual webs (43-45) of the moulded part (38) are aligned substantially perpendicular to the front face (18) of the housing and the rear face (19) of the housing, and form subsections which are physically delimited with respect to each other in the interior of the housing.

Description

Charging connection device for electric vehicles

It is well known that to charge or regenerate the energy storage of an electrically powered vehicle such a vehicle is turned off for a certain time and electrically connected to an electrical energy source, usually the local power grid. Modern electric vehicles now have an acceptable range of several 100km, which can be covered with a fully charged energy storage, and also a correspondingly high drive power in the order of 100kW, which allows comfortable and rapid movement.

Compared to vehicles, which use internal combustion engines for propulsion and fueled during a very short downtime usually with a liquid or gaseous energy carrier, the charging process of today usual for electric vehicles electrochemical energy storage takes relatively long. In order to improve the service life and availability of an electric vehicle, therefore, it is sought after to keep the charging time as short as possible, for which, however, a considerable electrical power is required during the charging process. This must be purchased from the electrical network, typically converted via the charging electronics in the vehicle and finally transferred to the energy storage of the vehicle. The magnitude of the charging power today is in the range up to about 22kW and is thus significantly higher than the electrical power, which can be obtained, for example, from a conventional household socket. Electrically powered motor vehicles thus represent large consumers in comparison to other domestic consumers. Even if a power connection with in principle sufficiently high electrical connection power is available, it can lead to time- or situation-dependent restrictions due to the total load in parts of the power network come at the actual available power.

For the charging of electric vehicles - unless it is small vehicles in the manner of an electric bicycle or comparable - therefore special charging connection devices are required or at least useful, which can provide or transfer not only a correspondingly high electrical connection power in contrast to a conventional socket but also additional means of communication have, with which the charging electronics of a connected vehicle can determine the actual respectively applicable charging power or can respond to the current network situation, without overloading the network or the supply line and thus cause a shutdown. Furthermore, a number of safety devices are implemented in such charging connection devices, for example a blocking device which prevents unauthorized disconnection or unplugging under full load with appropriate arcing. The corresponding charging connection devices typically also ensure that, when fault currents occur, in the event of overload and occasionally in the case of impermissible feedback currents, the signal is switched off or signaled accordingly.

Such charging terminal devices may further include means for authorizing the energy purchase, for example via a coded RFID transponder or via a key switch, or comprise technical means to identify the user or to collect information for billing purposes and possibly this data via data network connections exchange central clearing offices. Furthermore, such charging terminals may also include means for measuring and monitoring the transmitted power, the current, or the amount of energy. Due to the high power to be transmitted, the power connection, both on the power side and on the vehicle side, is generally designed as a three-phase or multi-phase power connection with correspondingly large cable cross-sections of typically 4 to 6 mm ² , but occasionally up to 16 mm ² . Expediently, the charging connection devices are installed in the immediate vicinity of the parking spaces of the respective electric vehicles, which are usually garages, underground garages, covered parking areas and the like, which may be privately or occasionally also accessible to the public or at least accessible to a larger group of people.

Such charging connection devices are described, for example, in the publications US Pat. No. 4,532,418 A, DE 42 13 414 C2, FR 2 766 950 A1, JP 11-122714 A, US Pat. No. 6,362,594 B2, WO 2007/141543 A2, WO 2010/011545 A1, WO 2010/133959 A2 and AT 507 605 A1.

The housing of such charging connection devices must be the person handling the vehicle before contact with live parts in the interior or life-threatening Protect electric shocks. In addition, the housing protects the internal electrical and electronic components against mechanical damage and dirt and moisture and other expected in the environment of vehicles substances, such as road salt or comparable acting thawing agents, thus ensuring their long-term reliable function.

In order to ensure sufficient safety for persons and property against electric shock and fire, the housing must have a high mechanical strength and reliable tightness. In particular, it must also be able to survive impulse-type impacts or the impact of objects with a certain minimum energy without corresponding safety losses.

The solutions according to the prior art have in common that they are usually comparatively complex, often designed like a control cabinet or require a high manufacturing and assembly costs and therefore are relatively expensive. Moreover, they often have comparatively large dimensions and a high weight. The housings according to the prior art, as far as they meet the requirements of various relevant safety standards at all, often designed as solid metal housing, which are elastically or plastically deformed to a certain degree with appropriate mechanical stress, but at least their protective function continues can sufficiently fulfill, ie at least be able to reliably prevent the touching of live parts.

Such a generic charging connection device for electric vehicles is described in US 6,316,908 B2. The required electrical components of the charging connection device are housed in a multi-part metal housing, which is formed from a cup-shaped base part, a hood-like upper part which can be placed on the base part and a laterally dockable, cup-shaped side part made of metal. An electrical circuit board and a plurality of electrical components are held in the metallic base part and are slipped over in the assembled state of the housing from the metallic, hood-like upper part. In the hood-like upper part, a lateral opening is formed, through which connecting wires from the printed circuit board to laterally mounted on the upper part, other electrical components, such as a pointing device and a sensor to be performed. The laterally mounted electrotechnical components are then covered by the cup-shaped side part made of metal. With these measures, a robust and electromagnetically well shielded charging connection device is created. Among other things, by the high production costs and the consequent manufacturing costs for such a charging connection device whose acceptance or the achievable market potential is only partially satisfactory.

The object of the present invention is to provide a charging connection device which can be produced as inexpensively as possible and nevertheless offers a high degree of functionality or the highest possible level of security, in particular with regard to personal safety.

This object of the invention is achieved by the measures according to claim 1. It is advantageous that the corresponding charging connection device can be produced relatively inexpensively or particularly economically. In particular, larger quantities of charging connection devices can thereby be made relatively economical, after the receiving housing can be made at least partially, or even entirely, by injection molded plastic parts and still meet high safety requirements. The relatively economic producibility, especially for larger quantities, further favors the achievement of the lowest possible sales or

Market price, whereby the market acceptance or the market potential of this charging device can be further increased. Nevertheless, the specified charging connection device offers high technical safety, in particular high security for people handling it. By the specified measures, despite the execution of the user or operator facing front side of the housing as a plastic part, high security requirements can be reliably met. In particular, the specified charging connection device achieves high mechanical robustness and thus reliable protection against any possible contact with live parts by persons present or in charge. Overall, the specified charging connection device has increased, mechanical resistance, in particular breaking strength against a high-energy shock or impact, so that the housing present or handling persons reliably in such load cases against a health-impairing or lethal contact of live electrical and / or electronic Components or assemblies can protect. In addition, the corresponding charging connection device, despite its economic manufacturability in a trouble-free manner visually appealing, whereby the relationship between market share and manufacturing costs or market price can be further promoted.

A particular advantage of the invention is also that the use of plastic in the user or user an inherent sense of security or confidence is awakened when the housing of a charging connection device for electric vehicles, through which high electrical performance or hazardous electrical Are provided voltages, in particular mains voltages, at least partially made of plastic, preferably completely made of a plastic surfaces having housing is formed. This positive sense of security is already aroused when at least the exposed housing sections of the charging connection device, with which the operator can typically come into contact when handling, in particular the housing front side or housing front wall, are formed from an electrically insulating plastic part. In addition, the high electrical safety and robustness is technically improved by the arranged inside the housing molding considerably, so that despite a relatively large-volume housing high security requirements can be met in a relatively inexpensive and reliable manner. The molded part increases the robustness or breaking strength of the housing and thus protects in an improved manner from a safety-critical damage to the housing and thus from any contact with live parts by ignorant, inexperienced or careless persons. Another advantage are the measures according to claim 2, as this shock or

Pressure loads, which act on the front of the housing, are at least partially transferred from the molded part to the rear wall of the housing. In particular, this results in a power dissipation in the direction of the housing rear wall, whereby the robustness of the housing can be significantly increased. Especially when the charging connection device or its housing is designed as a wall housing or provided for wall mounting and accordingly mounted on a wall surface, thereby the breaking strength and robustness of the charging connection device can be significantly increased. Of particular advantage are also the measures according to claim 3, since characterized at least one impact or shock loading exposed surface of the front of the housing plastic or a completely formed plastic housing of one or more substantially perpendicular to the front of the housing, rib-like web or webs in Interior of the housing is supported so that excessive deformation and thus breakage is avoided. In this case, at least one web or a corresponding, rib-like support element of the molding is not directly connected to the inner surface of the front wall and also does not touch it in the mechanically unstressed case. Rather, at least one web is arranged at a predefined distance from the inner surface of the housing front wall. In the event of a shock load from outside on the housing front, the housing front wall can initially be elastically deformed without being supported by the web spaced therefrom. At least part of the impact energy is absorbed and converted into elastic spring energy. In a further deformation, finally, the housing front wall comes with or behind or arranged behind web or support elements of the built-in housing molding in contact and is additionally supported from this point, so that the further deformation of the housing front wall, which would otherwise lead to breakage , is limited. The breaking strength and robustness of the housing can be significantly improved. The advantage here is an embodiment according to claim 4, since a favorable relationship between elasticity or conversion of impact energy into elastic spring energy and protection against overuse or breakage of the housing front wall is achieved.

Also advantageous are the measures according to claim 5, as this relatively large or large-volume housing can be made of plastic and this can still achieve high robustness and security. In particular, thereby plastic housing with a housing volume or a housing size of about a shoebox or carrying bag are easily used for generic charging connection devices with electrical components above the safety extra-low voltage. Above all, the central surface sections with increased elastic compliance, in particular the front of the housing, are well protected against breakage or severe deformation, so that high safety requirements can be met. Of particular advantage is also the embodiment according to claim 6, since thereby the molded body fulfills a multiple functionality and thus its relationship between costs and benefits is improved. In particular, thereby contributes to the molding for safe electrical insulation or structural separation between PCB sections with different voltage levels. For example, this makes it possible in a simple manner,

Mains voltage sections and signal or low voltage sections to run on a common, one-piece circuit board without safety-related losses occur. As a result of this electrically insulating separation or spatial partitioning by means of at least one web of the molded body, the danger of a transition from live parts, such as mains voltage-carrying wires or components with hazardous voltage values, to neighboring or surrounding sections with signal voltage or safety extra-low voltage becomes particularly reliable prevented. By combining circuit board sections for different voltage levels on a common, one-piece printed circuit board, a high degree of compactness and a saving in terms of production costs can also be achieved. In addition, a printed circuit board favors the minimization of the manufacturing costs, especially for larger quantities of the charging connection device, since this eliminates the need for expensive manual wiring or cabling between a large number or a plurality of the electrotechnical components of the charging connection device.

In the measures according to claim 7 is of advantage that thereby an effective electromagnetic shielding can be achieved, so that the charging connection device strict regulations in terms of electromagnetic compatibility and immunity is fair. In particular, this makes it possible to keep an electromagnetic interference field of the charging connection device below the prescribed limit values, or, on the other hand, the sensitivity of the charging connection device to external disturbing influences is low. This means that external and / or internal sources of interference are rendered uncritical and harmless in an efficient and economical manner. In addition, the use of a conductive and electromagnetically shielding housing or of additional shielding plates or shielding hoods inside the housing can be dispensed with. In combination with relatively cost-effective or economically producible housing parts or housings made of plastic, this makes it possible to achieve cost-effective charging connection devices that are efficient and meet high safety requirements. Also of advantage are the measures according to claim 8, as a reliable or highly secure separation or foreclosure of printed circuit board sections is achieved with different voltage ranges. In particular, this can be prevented in a simple and reliable manner or in many cases hintan held that in a damage or failure electrical components can pass from a first voltage section in a further, greatly different voltage portion of the circuit board. As a result, increased safety requirements are taken into account in a simple, cost-effective and also efficient way, and the functionality or the use of the molded part inside the housing is further increased.

Due to the advantageous development according to claim 9, a relatively balanced temperature level within the housing can be achieved in a simple manner. In particular, these openings in the molded part, for example slots in at least one web of the molded part, allow an exchange of air or an improved air circulation, whereby zones with elevated temperature values can be avoided or kept behind. In particular, even when the molded part bridges electrical components with high current loads or hood-like covers, sufficient cooling of these components can be achieved. Accordingly, components with high current loads, such as a contactor or Fl-circuit breaker, but also the circuit board inside the

Housing be covered by the molded part at least partially or hood-like, without the risk of a locally excessive temperature or a critical temperature development exists. By the measures according to claim 10, the usefulness or the functionality of the molded part is further increased in an advantageous manner and thus its usefulness and efficiency further increased. In addition, the electrical safety or reliability of the charging connection device is further increased by these measures, after any loosening of mains voltage cables leading from the plangemäßen connection point transmission or transfer of this voltage is suppressed to surrounding sections in the housing. Thus, in a simple and cost-effective manner, the electrical safety in connection with the molded part can be further increased. In particular, a high electrical safety of the charging connection device is ensured by the measures according to claim 11. This prevents in a simple and practical and reliable way that in case of a possible detachment of the high or mains voltage cables leading to the socket transmission of this electrical voltage to neighboring or surrounding, electrical components can be carried inside the housing.

The measures according to claim 12 powerful charging connection devices can be constructed with high current carrying capacity, which are completely or at least partially formed by housing parts made of plastic molded parts while still reliably meet high safety requirements. In particular, charging terminals may be provided thereby requiring relatively large volume electrical and electronic assemblies or components for high electrical power, e.g. Power relays, contactors or Fl-circuit breaker, and yet can be accommodated in plastic housings with correspondingly large minimum dimensions and correspondingly large housing surfaces. In particular, this makes it possible in a simple manner to make plastic housing for charging connection devices with the dimensions in about a shoebox, a briefcase or a carrying case, without causing safety-related losses occur. For example, relevant safety standards can be effectively met or exceeded in an effective manner.

Also advantageous are the measures according to claim 13, since thereby the first housing part or relevant for the strength, safety and tightness of the basic housing Ladean- closing device can be optimized in terms of robustness or static or dynamic load capacity. In conjunction with the cladding element can then also high aesthetic requirements in a simple manner taken into account or the visual appearance can be improved. In addition, differently designed or markedly different charging connection devices can thereby be produced at relatively low costs, thereby further increasing the acceptance and at the same time the economic efficiency of the charging connection device. In the embodiment according to claim 14 is advantageous that thereby also contribute to the cladding element to increase the robustness or breaking strength of the housing and thus subsequently to increase the electrical safety of the charging connection device. In particular, this creates elastic buffer zones for impact movements or zones of degradation for impact energy. In addition, a simple and simple adaptation of a basic module to the individual design requirements of vehicle manufacturers, middlemen or end users is possible in a simple manner.

According to the measures according to claim 15, the charging connection device has an integrated socket on which compatible vehicle charging cables can be connected in a simple manner. A significant advantage of this embodiment is that considerable forces can be absorbed in the course of connecting or disconnecting the charging cable or when pulling on the charging cable or the impact on the connected plug, without damaging the housing or the housing front wall occurs. The corresponding mechanical robustness is achieved in spite of the integrated in the front wall or held over a breakthrough in the housing front wall and partially built into the housing socket. In this case, the socket in the front wall by the arranged inside the housing molding additionally supported or partially absorbed and separated from adjacent parts insulating and thus the robustness and electrical safety of the charging connection device can be further increased. This multiple functionality of the molded part can also further improve the relationship between costs and benefits.

In the measures according to claim 16, it is advantageous that a simple mounting of the electrotechnical components in the further housing part, which is preferably made of plastic, is achieved. In particular, the good accessibility or accessibility of the receiving space of this housing part allows a rapid and relatively fail-safe installation of the respective electrical components. The molded wall webs improve the torsional rigidity and breaking strength of this housing part to a considerable extent.

Furthermore, the measures are advantageous according to claim 17, as characterized by the removal of the front of the housing good accessibility to the behind it, electrical Components, in particular electrical cable connections is given. As a result, installation work or maintenance or adjustment work on the charging connection device are simplified or accelerated and thus further improves the acceptance by fitters or in the economic market. In addition, the wall webs formed integrally with the housing front wall favor the robustness of the first housing part or the entire housing in a simple and practical manner.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

In each case, in a simplified, exemplary representation: an embodiment of the charging connection device in a perspective view of the housing front side; the charging connection device of Figure 1 in a perspective view of the housin serückseite.

FIG. 3 shows the charging connection device according to FIG. 1 in an exploded view; FIG.

FIG. 4 shows the charging connection device according to FIG. 1 in an exploded view with the trim element removed and the first housing part removed; FIG. a sectional view of the rear housing part of Figure 4 with a parallel to the rear wall oriented cutting plane and hidden attachment components.

6 is a cross-sectional view of the charging port device;

7 shows the printed circuit board with individual electrotechnical components and the molded part of the charging connection device placed thereon in a perspective view. By way of introduction, it should be noted that in the differently described embodiments, identical parts are provided with the same reference numerals or identical component names, wherein the disclosures contained in the entire description can be mutatis mutandis to identical parts with the same reference numerals and component names. Also, the position information selected in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.

FIGS. 1 to 7 illustrate an embodiment according to the invention of a charging connection device 1 for electric vehicles. This charge connection device 1 is provided for charging or regenerating the energy store of an electrically operated vehicle by electrically connecting the charge connection device 1 with the energy store or the charging electronics of the electric vehicle. The charging connection device 1 is to be understood as a source of supply for electrical energy, which electrical energy is to be transferred into the at least one energy store of an electric vehicle. The charging connection device 1 is especially when the charging electronics installed on the vehicle side, a kind of smart charging station for electric vehicles. Optionally, it is also possible to assign the charging port device 1 a charging electronics or to integrate in the charging connection device 1 a charging electronics, which the input side fed, converted electrical energy into a suitable for charging the energy storage in the electric vehicle or adapted form and provides.

As best seen in FIGS. 3 and 4, the charging connection device 1 comprises a plurality of electrotechnical components 2, which are enclosed by a multi-part housing 3. These electrical components 2 also include electronic components or assemblies. The electrotechnical components 2 serve for switching and / or distributing and / or measuring and / or monitoring the recorded and / or the emitted electrical energy. Depending on the embodiment of the charging connection device 1, the electrotechnical components 2 can at least one component be selected from the group of components comprising contactor 4, FI

Protection switch 5, relay, terminal 6, electronic circuit and the like include. The electrotechnical components 2 also include electronic components. The electrotechnical components 2 comprise at least one so-called Printed circuit board or printed circuit board 7, on which a plurality of electronic components for controlling and / or measuring and / or monitoring of the energy states are arranged on the charging connection device 1 or in the electric vehicle connectable therewith. In particular, a control and / or off value device 8 is provided, which is formed at least partially on a printed circuit board 7. Optionally, the control and / or evaluation device 8 comprise at least one data communication interface 9 - Fig. 3 - via which a data communication of the control and evaluation device 8 and the charging connection device 1 with peripheral, electronic or electrical engineering units is made possible. Alternatively or in addition to a wired communication interface 9, it is of course also possible to provide radio technology-based communication interfaces.

The charging connection device 1 in this case has at least one first interface 10 for supplying or feeding in electrical energy from a fixed power supply network. In particular, the charging connection device 1 is supplied with the electrical energy required for forwarding to a connected electric vehicle via this first interface 10. This interface 10 is designed as a line interface, which is preferably provided for connecting cable cores. In order to be able to transfer the typically required electrical power to or into the charging connection device 1, cable cross-sections of between 4 to 16 mm are usually provided. The first interface 10 thus acts as a connection point for the electrical supply line. The electrical energy is in this case based on a single-phase or preferably multi-phase power supply network with a standard or domestic mains voltage, that is, for example, in the European region in the amount of 230 V AC or 400 V AC. By way of example, it is also possible to provide the side walls or the rear wall and / or the bottom plate of the housing 3 with at least one cable feed-through for the electrical supply line. The charging connection device 1 furthermore comprises at least one second interface 12, 13 for the controlled or controlled delivery of electrical energy to an electric vehicle connected thereto. This second interface 12, 13 can in this case by at least one female connector 14 and / or by at least one cable outlet or by connecting terminals 6 - Fig. 3 - be formed for cable ends. In particular, the second interface 12 of the charging connection device 1 can be formed by at least one plug socket 14 and / or at least one cable outlet 15 with a permanently connected charging cable (not shown) to supply the respectively provided by the charging connection device 1 or each available electrical energy to a To transmit connected electric vehicle. In the illustrated embodiment, the cable outlet 15 with a cable holder - Fig. 3, 4 - combined to allow an orderly support of residual lengths or the total length of the connecting or charging cable to an electric vehicle. In order to accommodate or install the electrical components 2 as quickly as possible or simply in the housing 3, it is expedient to form the housing 3 from at least one first housing part 16 and at least one further housing part 17. According to the illustrated, expedient embodiment, the housing 3 is designed as a wall housing, wherein the first housing part 16 forms at least a portion of the Gehäusevorder- side 18 and the further housing part 17 defines at least a portion of the housing rear side 19. The at least a first, according to the front housing part 16 and at least one further, according to the back housing part 17 assembled housing 3, in conjunction with at least one sealing element 20, 21 ensures that the built therein electrical components 2 before a contact by persons and are protected from moisture and dirt. Optionally, as shown schematically - at least on the first or front housing part 16 at least one as needed releasable or, if necessary, hinged lid 22, 23 may be provided, with which a partial access or a partial inspection in the housing interior, for example, a FI protection Switch 5 or a circuit breaker, is enabled.

It is essential that at least the first housing part 16, which defines at least partial sections of the housing front side 18, is formed as a molded plastic part 24. In particular, at least the first housing part 16 is formed by a molded body produced by means of a plastic injection molding process. Conveniently, the further housing part 17 is designed as a molded plastic part 25. Alternatively, it is also possible for the further housing part 17, which forms at least partial sections of the housing rear side 19, to be made of metal or of a combination of metallic materials and of Plastic perform. However, the first or front housing part 16 may also be formed from metallic elements, for example screw inserts or pressure distribution elements, in conjunction with plastic wall sections. The relevant bearing or statically relevant support structure of the first or fronseitigen housing part 16 is accomplished or ensured by the molded plastic part 24. According to an expedient measure, the further housing part 17 may be formed from glass fiber reinforced plastic.

The first housing part 16 and the further housing part 17 form a cavity or interior for receiving the electrical components 2 in the plan or properly assembled state. It is expedient in this case if the further housing part 17 defining the housing rear side 19 is dish-shaped and comprises the housing rear wall 26 with wall webs 27 extending along its peripheral portion. In particular, in the case of a rectangular outline shape of the housing rear wall 26, four wall webs 27 extending along the peripheral portion thereof are formed so that a shell-like housing part 17 is formed. Expediently, the first housing part 16 defining the housing front side 18 is also designed to be shell-shaped or cover-like, at least in sections, this first housing part 16 forming at least partial sections of a housing front wall 28 of the charging connection device 1. This housing front wall 28 is directly visible and accessible by a user or a user of the charging connection device 1. The housing front wall 28 has according to the illustrated, expedient embodiment along the peripheral portion extending wall webs 29 to define the at least partially shell-like, first housing part 16. In the illustrated embodiment, the first housing part 16 is a combination of cup and lid-like element with respect to the housing rear side 19 provided on the other housing part 17 is a Trennbzw. Joining plane between the first and the further housing part 16, 17 is preferably aligned parallel to the housing front wall 28 and to the housing front side 18. Within this separation or joining plane at least one sealing element 20 is provided, as best seen in FIG. 3 can be seen.

It is expedient if at least the strength-relevant, first housing part 16, but possibly also the further housing part 17, at least in sections, in particular in the region of the edges of a cage, shell or hood-like cladding element 30 is covered. This cladding element 30 is provided as a partial covering for surface sections of the first and / or further housing part 16, 17. The cladding element 30 in this case has at least one opening 31, via which a partial section of the first housing part 16 is accessible or released. In particular, a partial section of the housing front side 18 is formed by this opening 31 or a surface section of the first housing part 16 is released for direct access to its surface. It is useful if the housing front wall 28 in the assembled state of the housing 3 is substantially flush with the boundary edges of the opening 31 in the cladding element 30, as best seen in FIG. 1 can be seen.

As best seen in a combination of FIGS. 4 and 6, according to an expedient embodiment between the inside 32 of the cladding element 30 and the top 33 of the first housing part 16 at least partially interspaces 34, 35, 36 may be formed. While the intermediate spaces 34, 35 provide, inter alia, game rooms for design variations of the housing 3 or represent elastic buffer zones for increased robustness requirements, at least one intermediate space 36 - FIG. 4 - can be provided between the cladding element 30 and the first housing part 16 as a receiving space for behind the cover element 30 concealed positioned flaps or covers 22, 23 act, as best seen in FIGS. 3 and 4 can be seen. By simply removing the relatively filigree cladding element 30 - Fig. 1 - from the strength-relevant basic housing comprising the first and the further housing part 16, 17 then unrestricted access to a preferably tool-free adjustable flap or cover member 22 for the actuation or provision of an FI Protection switch 5 or on a fastened by screws cover 22 for local access to a power connector in the housing 3 and on the first interface 10 with the terminals for an electrical supply line from the local power supply network.

In the illustrated embodiment, a charging connection device 1 with a built-in front of the housing 18 socket 14, an opening 37 may be formed in the first housing part 16, through which the socket 14 projects at least partially into the housing interior, while the socket opening with the electrical plug contacts starting from the front of the housing 18 is accessible. The socket 14 is determined on the one hand by the edge portions around the opening 37 and consequently on the first, from Plastic formed housing part 16 supported load-bearing, as can be seen inter alia from FIGS. 1 and 3. In particular, when the charging connection device 1 has a held by the first housing part 16 made of plastic socket 14, which socket 14 is compatible with a plug on the charging cable of an electric vehicle, it may be useful if the interior of the housing facing portion of the socket 14 in addition a molded part 38 disposed in the interior of the housing 3 is bounded and / or supported by it.

In particular, a molded part 38 positioned inside the housing can be provided for additional support or for improved, load-bearing retention of the socket 14.

Alternatively or in combination with this support function of the molded part 38, the molded part 38 can also define or limit a receiving or connecting region 39 for electrical connecting lines, not shown, to the socket 14. This example according to the hollow cylindrical receiving or connection area 39 allows an orderly and more electrically isolated or better insulating housing the electrical connection cable to the back of the socket 14. It is particularly useful if the molded part 38 is formed of plastic, so that in addition to an optionally provided, mechanical support or spatial demarcation function, in any case, the function of electrical insulation or barrier between different sections 40, 41, 42 in the interior of the housing 3 can take over. Such a portion 40 can be replaced by the electrical

Recording or connection area 39 may be formed for the electrical leads to an optionally formed socket 14.

It is essential that the housing 3 has in its interior at least one with respect to the first and further housing part 16, 17 structurally independently formed molding 38, which in the housing interior at least two spatially separated from each other partial areas

40, 41, 42 trains or defines. For this purpose, the structurally independently executed molding 38 has a plurality of walls or webs 43, 44, 45, which the subregions 40,

41, 42 define inside the housing or at least partially delimit each other. These portions 40, 41, 42 need not be completely separated from each other, but the webs 43, 44, 45 represent a kind of mechanical hurdles or electrical barriers between the sections 40, 41, 42 in the housing interior. The molded part 38 is preferably designed as a molded plastic element, so that the respective webs 43, 44, 45 are formed of electrically insulating plastic. It is essential that, when the molded part 38 is inserted into the housing interior and positioned according to plan, at least individual webs 43, 44, 45 of the molding 38 are aligned substantially perpendicular to the housing front side 18 and housing rear side 19. As a result, at least individual webs 43, 44, 45 of the molded part 38 can assume a mechanical support function and thus significantly improve the robustness or breaking strength of the housing 3. By way of example, the webs 43, 44 act as support webs, as best seen in a synopsis of Figs. 3, 4 and 7, respectively. In contrast, the webs 45, which are relatively low in the exemplary embodiment shown, act as mechanical or electrical partitions between the subregions 41, 42 in the housing 3. In these subregions 41, 42, different electrical voltage levels are provided, in particular the network connection compartment and the space delineated therefrom. electrical communication or data connection compartment executed, as best seen in FIGS. 3, 4 and in FIG. 7.

The defined by individual webs 43, 44, 45 of the molding 38 portions 40, 41, 42 in the interior of the housing 3 can thus by the previously discussed Aufnahmebzw. Connection area 39 for a socket 14 and / or through a connection area 46 for the mains voltage or mains supply line and / or through a connection area 47 for

Small or signal voltage to be defined, as best seen in a synopsis of Figs. 4 and 5. By way of example, the webs 45 of the molded body 38 delimit the connection region 46 for the supply line or for the mains voltage section from the connection region 47 with small or signal voltage.

In this connection region 47, for example, the communication cut parts 9 - Fig. 3 - be provided for data communication with peripheral electronic devices. This means that at least individual webs 45 of the molded part 38, in particular, subdivide the printed circuit board 7 into at least two subsections. Preferably, these are subsections on the printed circuit board 7, in which greatly different electrical voltage levels are present or guided. In particular, individual electrotechnical components 2 of the charging connection device 1 are constructed on the printed circuit board 7 and electrically connected in an adequate manner via their interconnects, wherein individual components 2 or components with respect to lead to electrical shock to persons critical voltages, such as mains voltage, and other components 2 or components on the circuit board 7 only safety extra-low voltage, such as signal voltage or operating voltage for the electronic control and / or evaluation device 8 - Fig. 3 - lead or anlie - have got.

According to an expedient embodiment, it is provided that at least individual webs 43, 44 of the molded part 38 are supported on the housing rear wall 26 in a load-transmitting manner. In particular, load-bearing support feet 48 can be provided in partial sections of the molded part 38 or the webs 43, 44, via which the molded part 38 is supported on the housing rear wall 26. These webs 43, 44 or support legs 48 can thereby by exemptions or

Openings in the circuit board 7 from the front housing portion in the rear housing portion rich and thus transmitted forces in the direction of the housing rear wall 26, as best seen in FIGS. 3, 6 and 7 can be seen.

As best seen in FIG. 6, it can be expedient if at least individual webs 43, 44 of the molded part 38 are spaced apart with their end 49 closest to the housing front side 18 at a distance 50 from the inside 51 of the housing front wall 28. The distance 50 is between 1 mm and 20 mm, preferably between 2 mm and 10 mm, in particular approximately 6 mm. It is essential that between the inner side 51 of the housing front wall 28 and the nearest thereto end 49 of at least individual webs 43, 44 a defined clearance or gap is formed, which is an elastically resilient and resilient resetting buffer zone when impact on the housing front wall 28 - or pressure loads act. In particular, with shock loads acting perpendicular or approximately perpendicular to the housing front 18, the mechanical strength or robustness and also the electrical safety of the first housing part 16 designed as a plastic part 24 and forming the housing front wall 28 can be significantly improved. As a result, the probability of potential power accidents can be kept particularly low.

According to an expedient measure, at least individual webs 43, 44 of the molded part 38 are arranged in the center region of the housing 3, in particular in the middle section of the length and / or width of the housing front 18, as best shown from a synopsis of Figs. 4 and 7 can be seen. This makes it possible to provide relatively large-area or large-volume housing 3, in particular with a relatively large-surface housing front side 18 made of plastic, which nevertheless ensure a high level of robustness and safety in terms of electrical safety or insulation reliability. In particular, housing 3 made of plastic can be created thereby, which have a width and height dimension between 15 cm and 60 cm, preferably between 20 cm and 50 cm with respect to the housing front side 18, while still a high robustness or dimensional stability and have an excellent break resistance. It may also be expedient if at least individual webs 43, 44 of the molded part 38, in particular separating and supporting function acquiring webs 44 of the molding 38, in a predefined distance 52 to the circuit board 7 are distanced. In particular, it is advantageous to provide a distance of up to 2 mm, preferably less than 1 mm, in particular less than 0.7 mm, between individual webs 44 of the molded part 38 and the upper side of the printed circuit board 7, as best shown in FIGS 6 and 7 can be seen. As a result, direct introduction of force starting from the molded part 38 on the underneath or behind the printed circuit board 7 are held back. Nevertheless, due to this relatively small distance 52, a reliable or sufficient electrical separation is achieved between the mutually delimited partial sections or partial areas 40, 41, 42 with different, electrical voltage levels on the printed circuit board 7 or within the housing 3. In particular, this avoids that, in the event of a defect, a voltage-carrying element can be displaced from a first subsection or subarea 41 with a first voltage region into an adjacent or adjacent subsection or subarea 42 with significantly different voltage ranges. Even by these measures, therefore, the protection of living things from dangerous contact voltage and electric shock in case of failure can be significantly improved.

As further best seen in Fig. 6 it can be seen, at least individual webs 43 of the molding 38 may have at least one opening 53, in particular a plurality of ventilation slots 54 include. These openings 53 or ventilation slots 54 are provided for the exchange of air between adjacent portions 40, 41, 42 in the housing 3 or between each other distanced housing sections. As a result, local temperature increases in the housing 3 are held back. The molded part 38 can furthermore be designed such that at least individual webs 43, 44 of the molded part 38 form a cable guide channel 55 - FIGS. 3, 6 and 7 - are provided for holding cable sections, or delimit electrical cable sections relative to adjacent housing sections , According to an expedient embodiment, the electrical leads or cable sections are mounted to a mounted on the housing front side 18, the second interface 12 forming socket 14 of individual webs 43 of the molding 38, as this has been previously explained. The molding part 38, which is preferably injection-molded from plastic, can also be embodied in a hood-like manner at least in sections, in order to cover electrical components 2 which carry dangerous contact voltage and to protect it against careless access in the manner of a cover hood. The molded part 38 can have a central lining section, from which at least individual webs 43, 44, 55 protrude with mechanical support and / or electrical separation function, as is illustrated by way of example in FIGS. 3 and 7. In the case of mutually distanced housing parts 16, 17 - according to FIG. 3, 4 - the molded part 38 can be removed from the interior of the housing or inserted between the housing parts 16, 17. At the planned position, the molded part 38 is preferably held by its form-fitting effect with respect to the first and / or further housing part 16, 17 at its intended location in the housing interior. The illustrated in FIGS. 3, 4 side parts for strength-relevant basic housing or the cladding element 30 may be formed of plastic or metal and are used primarily for the simplest and most cost-individualization of the visual appearance of the charging device. 1

According to an expedient measure can also be provided to ensure sufficient electromagnetic compatibility of the charging device 1 by external, electromagnetic shielding surfaces are formed on the circuit board 7, which is designed as a multilayer printed circuit board. In this case, the inner, electrical signal paths are formed between the outer shielding surfaces of the printed circuit board 7. As a result, despite the formation of a housing 3 for the charging connection device 1 which is formed at least predominantly from plastic, preferably completely made of plastic, a sufficiently high electromagnetic compatibility with respect to disturbing influences can be achieved. be achieved over peripheral components and / or in terms of internal noise immunity.

The exemplary embodiments show possible embodiments of the charging connection device 1, wherein it should be noted that the invention is not limited to the specifically illustrated embodiments of the same, but rather various combinations of the individual embodiments are possible with each other and this variation possibility due to the teaching of technical Acting by objective invention in the skill of those working in this technical field is the expert. So are all conceivable embodiments, which are possible by combinations of individual details of the illustrated and described embodiment variant, includes the scope of protection.

The task underlying the independent inventive solutions can be found in the description.

Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions.

All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. the indication 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10, i. all sub-areas begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10.

Above all, the individual embodiment details shown in FIGS. 1 to 7 can form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures. Reference numeral Charging terminal device 36 Gap

elektrotechn. Components 37 Breakthrough

Housing 38 molding

Contactor 39 Acquisition or connection area of the residual current device 40 Part area

Terminal 41 Part area

Printed circuit board 42 subarea

Control and / or evaluation device43 Bridge

44 bridge

Communication interface 45 bridge

first interface

46 connection area

Housing cover 47 Connection area

second interface 48 support foot

second interface 49 end

Socket 50 distance

cable outlet

51 inside

first housing part 52 distance

further housing part 53 breakthrough

Front of housing 54 Ventilation slot

Case back 55 Cable guide skanal

sealing element

cover

Plastic part

Plastic part housing back wall

wall web

Housing front wall

wall web

Cladding element breakthrough

inside

top

gap

Claims

Patent claims

1. charging connection device (1) for electric vehicles, with at least a first interface (10) for feeding electrical energy from a fixed power supply network in the charging connection device (1), with at least one second interface

(12) for the controlled delivery of electrical energy to an electric vehicle, comprising a plurality of electrical components (2) for switching, measuring or monitoring the recorded and / or the emitted electrical energy, and with the electro-technical components (2) enclosing, multipart Housing (3), which is at least composed of a first and a further housing part (16, 17), wherein the housing (3) and sealing elements (20, 21) built therein electrical components (2) against contact by persons and before Protect moisture and dirt, characterized in that at least the first housing part (16), which defines at least portions of the housing front side (18) is formed as a molded plastic part (24), and that in the interior of the housing (3) at least one structurally independently trained Molded part (38) is arranged with a plurality of webs (43-45) made of plastic, w obei at least individual webs (43-45) of the molded part (38) are aligned substantially perpendicular to the housing front (18) and back of the housing (19) and in the interior of the housing spatially separated from each other sub-regions (40-42) form.

2. charging connection device according to claim 1, characterized in that at least individual webs (43, 44) of the molded part (38) on the housing rear wall (26) are supported load-transmitting.

3. charging connection device according to claim 1 or 2, characterized in that at least individual webs (43, 44) of the molded part (38) with its housing front (18) nearest the end (49) at a distance (50) to the inside (51) the housing front wall (28) are spaced.

4. charging connection device according to claim 3, characterized in that the

Distance (50) between 1 mm and 20 mm, preferably between 2 mm and 10 mm, in particular in about 6 mm.

5. Charging connection device according to one of the preceding claims, characterized in that at least individual webs (43, 44) of the molded part (38) in the central region of the housing (3) are arranged, in particular in the central portion of the length and / or width of the housing front side (18). are positioned.

6. Charging connection device according to one of the preceding claims, characterized in that individual electrotechnical components (2) are arranged on a printed circuit board (7) and electrically connected via their conductor tracks, and that at least individual webs (45) of the molded part (38), the printed circuit board ( 7) into at least two subregions (41, 42), in particular subsections with different electrical voltage ranges on the circuit board (7), subdivide.

7. Charging connection device according to one of the preceding claims, characterized in that individual electrotechnical components (2) are arranged on an electrically multi-layer printed circuit board (7) and electrically connected via the conductor tracks, and that on the circuit board (7) external electromagnetic shielding surfaces and internal electrical signal paths are formed.

8. charging connection device according to claim 6, characterized in that at least individual webs (43, 44) of the molding (38) at a distance (52) of less than 2 mm, preferably less than 1 mm, in particular less than 0.7 mm are distanced to the circuit board (7).

9. charging connection device according to one of the preceding claims, characterized in that at least individual webs (43) of the molding (38) at least one

Breakthrough (53), in particular ventilation slots (54) for air exchange between adjacent sub-areas (40-42) or between spaced-apart housing sections form.

10. charging connection device according to one of the preceding claims, characterized in that at least individual webs (43, 44) of the molded part (38) form a cable guide channel (55) are provided for holding cable sections, or cable sections with respect to adjacent subregions (42) in the interior of the housing isolate electrically insulating.

11. Charging connection device according to claim 10, characterized in that of webs (43, 44) of the molded part (38) content Erten or guided cable sections through the electrical leads to a on the housing front side (18) mounted, the second interface (12) forming socket (14) are formed.

12. charging terminal device according to one of the preceding claims, characterized in that the housing (3) with respect to the front side of the housing (18) width and

Height dimensions between 15 cm and 60 cm, preferably between 20 cm and 50 cm.

13. Charging connection device according to one of the preceding claims, characterized in that the strength-relevant, first housing part (16) at least partially, in particular in the region of the edges, by a cage, shell or hood-like cladding element (30) is covered.

14. charging connection device according to claim 13, characterized in that between the inside (32) of the cladding element (30) and the top (33) of the first housing part (16) at least partially interspaces (34-36) are formed.

15. Charging connection device according to one of the preceding claims, characterized in that on the first housing part (16) a the second interface (12) educative de plug socket (14) is mounted load-bearing.

16. Charging connection device according to one of the preceding claims, characterized in that the housing rear side (19) forming, further housing part (17) is designed shell-like and the housing rear wall (26) along with its peripheral portion extending wall webs (27).

17. Charging connection device according to one of the preceding claims, characterized in that the housing front side (18) defining the first housing part (16) is executed shell-like and at least portions of the housing front wall (28) ausbil det, which at least along partial sections of its circumference substantially right angle to the housing front side (18) extending wall webs (29).