DE202012101364U1 - Charging connection device for electric vehicles - Google Patents

Abstract

Charging connection device (1) for electric vehicles, with at least one first interface (10) for feeding electrical energy from a stationary power supply network into the charging connection device (1), with at least one second interface (12) for controlled delivery of electrical energy to an electric vehicle a plurality of electrotechnical components (2) for switching, measuring or monitoring the absorbed and / or emitted electrical energy, and with a multi-part housing (3) enclosing the electrotechnical components (2), which comprises at least a first and a further housing part (16, 17), the housing (3) and sealing elements (20, 21) protecting the electrotechnical components (2) installed therein from being touched by people and from moisture and dirt, characterized in that at least the first housing part ( 16), which at least sections of the housing seventh side (18), is formed as a molded plastic part (24), and that in the interior of the housing (3) at least one structurally independent molded part (38) with a plurality of webs (43-45) made of plastic is arranged ...

Description

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 100 km, which can be covered with a fully charged energy storage, and also a correspondingly high drive power in the order of 100 kW, which allows a 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 22 kW and is thus significantly higher than the electrical power, which can be obtained, for example, from a conventional household socket. Even if a power connection with in principle sufficiently high electrical connection power is available, it may be due to the total load in parts of the power grid to time or situation-dependent restrictions in the actually available power come.

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 have additional means of communication, with which the charging electronics of a connected vehicle can determine the actual respectively obtainable charging power or can react to the current network situation, without overloading the network or the supply line and thus causing a shutdown. Furthermore, in such charging terminal devices, a number of safety devices are implemented, for example, a locking device that prevents unauthorized staking or staking 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 publicly accessible or at least accessible to a larger group of people.

Such charging connection devices are described for example in the documents US 4,532,418 A . DE 42 13 414 C2 . FR 2 766 950 A1 . JP 11-122714 A . US 6,362,594 B2 . WO 2007/141543 A2 . WO 2010/011545 A1 . WO 2010/133959 A2 and AT 507 605 A1 described.

The housing of such charging connection devices must protect the handling persons from contact with live parts in the interior or against life-threatening 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 withstand impulsive impacts or the impact of objects with a certain minimum energy without corresponding loss of security.

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 are, as far as they meet the requirements of various relevant safety standards at all, often as solid metal housing, which are elastically or plastically deformed to a certain extent with appropriate mechanical stress, but at least continue to perform their protective function sufficiently can, d. H. at least be able to reliably prevent the touching of live parts.

Such a generic charging connection device for electric vehicles is in the US 6,316,908 B2 described. 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, further electrical components, such as a display device and a sensor, are 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 present invention has for its object to provide a charging connection device, which is produced as inexpensively as possible and yet offers a high level of functionality and the highest possible security, especially in relation 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 economical producibility, especially with 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 connection device can be additionally 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 resistance to 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 Protect assemblies. 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 Voltages, in particular mains voltages, are provided, 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 transmitted from the molding at least partially on 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 molded body is not directly connected to the inner surface of the front wall and does not touch this in the mechanically unclaimed case either. Rather, at least one web is arranged with a predefined distance to the inner surface of the housing front wall. In a shock load from the outside to the front of the housing, the front wall of the housing can be initially deformed elastically, without being supported by the spaced web. 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 bulky 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 to run mains voltage sections and signal or low-voltage sections on a common, one-piece circuit board, without any safety-related losses occur. By this electrically insulating separation or spatial foreclosure by means of at least one web of the shaped body in particular the risk of a transition of live parts, such as mains voltage-carrying wires or components with personal hazardous voltage values, adjacent or surrounding sections with signal voltage or safety extra-low voltage is reliably prevented. By combining PCB sections for different voltage levels on a common, one-piece Printed circuit board can also be achieved a high compactness and a saving in terms of production costs. 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 disturbances 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 additional shielding plates or shields inside the housing can be made unnecessary. 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 manner, and the functionality or the usefulness 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 RCCB, but also the circuit board inside the housing, at least partially covered by the molding or hood-like bridged, 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, thereby charging connection devices can be created, which require relatively large-volume electrical and electronic assemblies or components for high electrical power, such. As power relays, contactors or RCCBs, and can still 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, plastic housing for charging connection devices with the dimensions in about a shoebox, a briefcase or a Carrying bag to make without compromising safety. For example, relevant safety standards can be effectively met or exceeded in an effective manner.

The measures according to claim 13 are also advantageous, since in this way the first housing part or the basic housing of the charging connection device relevant for the strength, safety and impermeability can be optimized with regard to 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 device can thereby be produced at relatively low cost, whereby the acceptance and at the same time the economic efficiency of the charging connection device is further increased.

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 is advantageous that thus a simple assembly of the electrical components in the other housing part, which is preferably formed 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 underlying located, electrical components, in particular given to electrical cable connections. 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:

1 an embodiment of the charging connection device in a perspective view of the front of the housing;

2 the charging terminal device according to 1 in a perspective view of the back of the case;

3 the charging terminal device according to 1 in exploded view;

4 the charging terminal device according to 1 in an exploded view with removed trim element and removed, the first housing part;

5 a sectional view of the rear housing part according to 4 with a cutting plane aligned parallel to the rear wall of the housing and hidden add-on components;

6 a cross-sectional view of the charging connector;

7 the printed circuit board with individual electrical components and the molded part of the charging connection device mounted thereon in a perspective view.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location selected in the description, such as. B. 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.

In the 1 to 7 is an embodiment of a charging terminal device according to the invention 1 illustrated for electric vehicles. This charging connection device 1 is provided for charging or regenerating the energy storage of an electrically powered vehicle by the charging connection device 1 is electrically connected to the energy storage or the charging electronics of the electric vehicle. The charging connection device 1 is to be understood as a source of electrical energy, which electrical energy is to be transferred to the at least one energy storage of an electric vehicle. The charging connection device 1 provides especially when the charging electronics installed on the vehicle side, a kind of smart charging station for electric vehicles. Optionally, it is also possible, the charging connection device 1 Assign a charging electronics or in the charging connection device 1 to integrate a charging electronics, which converts the input side, fed electrical energy into a suitable for charging the energy storage in the electric vehicle or adapted form and provides.

How best of the 3 and 4 can be seen includes the charging connector 1 a plurality of electrotechnical components 2 , which of a multi-part housing 3 are enclosed. Among these electrical components 2 are also electronic components or assemblies to understand. The electrotechnical components 2 serve for switching and / or distributing and / or measuring and / or monitoring the recorded and / or the emitted electrical energy. The electrotechnical components 2 can depending on the embodiment of the charging connection device 1 at least one component selected from the component group comprising contactor 4 , Residual current circuit breaker 5 , Relay, connection terminal 6 , electronic circuit and the like. To the electro-technical components 2 So count also electronic assemblies. The electrotechnical components 2 include 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 the energy states at the charging connection device 1 or are arranged in the electric vehicle connected thereto. In particular, a control and / or evaluation device 8th provided, which at least partially on a circuit board 7 is trained. Optionally, the control and / or evaluation device 8th at least one data communication interface 9 - 3 - Include, over which a data communication of the control and evaluation device 8th or the charging connection device 1 is made possible with peripheral, electronic or electrical engineering units. Alternatively or in addition to a wired communication interface 9 Of course, it is also possible to provide radio technology-based communication interfaces.

The charging connection device 1 has at least one first interface 10 for the supply or supply of electrical energy from a fixed power supply network. In particular, the charging terminal device becomes 1 via this first interface 10 the electrical energy required for transmission to a connected electric vehicle supplied. This interface 10 is designed as a line interface, which is preferably provided for connecting cable cores. To the typically required, electrical power to or in the charging connection device 1 To be able to transfer cable cross sections are usually provided between 4 to 16 mm ² . 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. According to the example, the energy supply or power supply via at least one breakthrough in the housing cover surface 11 the charging connection device 1 , Of course, it is also possible, the side walls or the rear wall and / or the bottom plate of the housing 3 to be provided with at least one cable bushing for the electrical supply line.

The charging connection device 1 also includes at least a second interface 12 . 13 for controlled or controlled delivery of electrical energy to an electric vehicle connected thereto. This second interface 12 . 13 can by at least one socket 14 and / or by at least one cable outlet or by terminals 6 - 3 - Be formed for cable ends. In particular, the second interface 12 the charging connection device 1 through at least one socket 14 and / or at least one cable outlet 15 be formed with a permanently connected charging cable (not shown) to that of the charging connector 1 provided or available to transfer electrical energy to an associated electric vehicle. In the illustrated embodiment, the cable outlet 15 with a cable holder - 3 . 4 - Combined to allow an orderly retention of residual lengths or the total length of the connecting or charging cable to an electric vehicle.

To the electrical components 2 as quickly as possible or simply in the housing 3 to accommodate or install, it is convenient to the housing 3 from at least a first housing part 16 and at least one further housing part 17 to build. According to the illustrated, expedient embodiment, the housing 3 designed as a wall housing, wherein the first housing part 16 at least a portion of the front of the housing 18 forms and the other housing part 17 at least a portion of the back of the case 19 Are defined. The at least a first, according to the front housing part 16 and at least one further, according to the back housing part 17 composite housing 3 provides in conjunction with at least one sealing element 20 . 21 sure that the built-in electrical components 2 are protected from personal contact, 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 be provided with which a partial access or a partial inspection in the interior of the housing, for example, a residual current circuit breaker 5 or a circuit breaker is enabled.

It is essential that at least the first housing part 16 which at least partial sections of the front of the housing 18 defined as molded plastic part 24 is trained. In particular, at least the first housing part 16 formed by a molded body produced by means of a plastic injection molding process. Conveniently, the other housing part 17 as molded plastic part 25 executed. Alternatively, it is also possible, the other housing part 17 which at least parts of the back of the housing 19 designed to be made of metal or a combination of metallic materials and plastic. But it can also be the first or front housing part 16 be formed of metallic elements, such as screw-in 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 doing by the molded plastic part 24 accomplished or guaranteed. According to an expedient measure, the further housing part 17 be formed of glass fiber reinforced plastic.

The first housing part 16 and the other housing part 17 form in the plan or properly assembled state a hollow or interior space for receiving the electrical components 2 out. It is useful if the case back 19 defining, further housing part 17 is executed shell-like and the rear wall 26 with wall webs extending along its peripheral portion 27 includes. Especially with a rectangular outline shape of the rear wall of the housing 26 are four along the peripheral portion extending wall webs 27 designed so that a shell-like housing part 17 is formed. Conveniently, the front of the housing is also 18 defining, first housing part 16 at least partially executed shell-like or lid-like, said first housing part 16 at least sections of a housing front wall 28 the charging connection device 1 formed. This housing front wall 28 is by a user or operator of the charging connection device 1 immediately visible and accessible. The housing front wall 28 has according to the illustrated, expedient embodiment along the peripheral portion extending wall webs 29 on to the at least partially shell-like, first housing part 16 define. In the illustrated embodiment, the first housing part 16 a combination of cup and lid-like element with respect to that on the back of the case 19 provided, further housing part 17 dar. A separation or joining plane between the first and the other housing part 16 . 17 is preferably parallel to the housing front wall 28 or to the front of the housing 18 aligned. Within this separation or joining plane is at least one sealing element 20 provided as best as possible 3 is apparent.

It is expedient if at least the strength-relevant, first housing part 16 , but optionally 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 here as a partial overlap for surface portions of the first and / or further housing part 16 . 17 intended. The cladding element 30 points out at least one breakthrough 31 over which a portion of the first housing part 16 is accessible or released. In particular, this breakthrough will 31 a section of the front of the housing 18 formed or a surface portion of the first housing part 16 free for direct access to its surface. It is useful if the housing front wall 28 in the assembled state of the housing 3 essentially flush with the boundary edges of the breakthrough 31 in the cladding element 30 concludes how best this is 1 is apparent.

How best from a synopsis of 4 and 6 can be seen, 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 be educated. While the spaces between 34 . 35 among other scope for design variations of the housing 3 provide elastic buffer zones for increased robustness requirements, can at least one space 36 - 4 - between the cladding element 30 and the first housing part 16 as a receiving space for behind the paneling element 30 concealed flaps or lids 22 . 23 act like this best from the 3 and 4 is apparent. By simply removing the relatively filigree cladding element 30 - 1 - From the strength-relevant basic housing comprising the first and the further housing part 16 . 17 then there is unrestricted access to a preferably tool-free adjustable flap or cover element 22 for actuating or resetting an RCCB 5 or on a lid fastened by screws 22 for local access to a power connector in the chassis 3 or to the first interface 10 with the connection terminals for an electrical supply line from the local power supply network.

In the embodiment shown, a charging connection device 1 with one in the front of the case 18 built-in socket 14 can in the first housing part 16 a breakthrough 37 be formed, through which the socket 14 at least partially protrudes 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 on the one hand by the edge sections around the breakthrough 37 determined and therefore on the first, formed from plastic housing part 16 held load-bearing, as this among other things from the 1 and 3 is apparent. Especially if the charging connector 1 one by means of the first housing part 16 plastic-mounted socket 14 has, which socket 14 to a plug on the charging cable of an electric vehicle is compatible, it may be useful if the housing interior facing portion of the socket 14 additionally of one in the interior of the housing 3 arranged molding 38 is bounded and / or supported by it.

In particular, a molded part positioned inside the housing can be used 38 for additional support or for improved load-bearing mounting of the socket 14 be provided. Alternatively or in combination with this support function of the molded part 38 can the molding 38 also a recording or connection area 39 for not shown, electrical connection cables to the socket 14 define or limit. This example according to hollow cylindrical receiving or connection area 39 allows an ordered and electrically isolated or better insulating housing of the electrical connection cable to the back of the socket 14 , It is particularly useful if the molding 38 is formed of plastic, so that it in addition to an optionally provided, mechanical support or spatial demarcation function in any case the function of an electrical insulation or barrier between different sub-areas 40 . 41 . 42 inside the case 3 can take over. Such a subarea 40 can thereby by the electrical recording or connection area 39 for the electrical supply lines to an optionally formed socket 14 be formed.

It is essential that the housing 3 in its interior at least one opposite the first and further housing part 16 . 17 structurally independent trained molding 38 has, 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 independent executed molding 38 a plurality of walls or webs 43 . 44 . 45 on which the sections 40 . 41 . 42 define inside the housing or at least partially delimit each other. These subareas 40 . 41 . 42 Do not have to be completely separated from each other, but the Stege 43 . 44 . 45 a kind of mechanical hurdles or electrical barriers between the subregions 40 . 41 . 42 inside the housing.

The molding 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, if the molding 38 inserted into the housing interior and positioned according to schedule, at least individual webs 43 . 44 . 45 of the molding 38 essentially perpendicular to the front of the housing 18 and case back 19 are aligned. As a result, at least individual webs 43 . 44 . 45 of the molding 38 take over a mechanical support function and so the robustness or breaking strength of the housing 3 improve significantly. By way of example, the webs function 43 . 44 as support webs, as best seen from a synopsis of 3 . 4 or off 7 is apparent. In contrast, act in the illustrated embodiment, relatively low lands 45 as mechanical or electrical partitions between the sub-areas 41 . 42 in the case 3 , In these subareas 41 . 42 are provided to each other different electrical voltage level, in particular the network connection compartment and the spatially delimited, electrical communication or data connection compartment executed, as best of the 3 . 4 and from 7 is apparent.

The of individual bridges 43 . 44 . 45 of the molding 38 defined subareas 40 . 41 . 42 inside the case 3 can thus by the previously explained recording or connection area 39 for a socket 14 and / or through a connection area 46 for the mains voltage or mains supply and / or through a connection area 47 be defined for small or signal voltage, as best from a synopsis of 4 and 5 is apparent. By way of example, the webs border 45 of the molding 38 the connection area 46 for the supply line or for the mains voltage section from the connection area 47 with small or signal voltage from.

In this connection area 47 For example, the communication interface 9 - 3 Be provided for data communication with peripheral electronic units. This means that at least individual webs 45 of the molding 38 especially the circuit board 7 divide into at least two subsections. Preferably, these are sections on the circuit board 7 , in which strongly different electrical voltage levels are present or guided. In particular, individual electrotechnical components 2 the charging connection device 1 on the circuit board 7 constructed and electrically connected via their interconnects in an adequate manner, with individual components 2 or components in relation to an electric shock to persons carrying critical voltages, such as mains voltage, and other components 2 or components on the circuit board 7 only safety extra-low voltage, for example signal voltage or operating voltage for the electronic control and / or evaluation device 8th - 3 - lead or have adjoining.

According to an expedient embodiment, it is provided that at least individual webs 43 . 44 of the molding 38 on the rear wall of the housing 26 are supported load transfer. In particular, in subsections of the molding 38 or the webs 43 . 44 load-bearing support feet 48 be provided, over which the molding 38 on the rear wall of the housing 26 is supported. These bridges 43 . 44 or support feet 48 can thereby by exemptions or breakthroughs in the circuit board 7 range from the front housing portion in the rear housing portion and thus occurring forces towards the rear wall 26 as best done from the 3 . 6 and 7 is apparent.

How best 6 it can be seen, it may be appropriate if at least individual webs 43 . 44 of the molding 38 with her to the front of the case 18 nearest end 49 at a distance 50 to the inside 51 the housing front wall 28 are spaced. The distance 50 is between 1 mm and 20 mm, preferably between 2 mm and 10 mm, in particular about 6 mm. It is essential that between the inside 51 the housing front wall 28 and the nearest end 49 from at least individual webs 43 . 44 a defined free space or gap is formed, which is an elastically resilient and resiliently resetting buffer zone when on the housing front wall 28 Impact or pressure loads act. Especially with vertical or approximately perpendicular to the front of the housing 18 acting shock loads can thereby the mechanical strength and robustness and also the electrical safety of the plastic part 24 executed, the housing front wall 28 forming, first housing part 16 be significantly improved. As a result, the probability of potential power accidents can be kept particularly low.

According to an expedient measure are at least individual webs 43 . 44 of the molding 38 in the center area of the housing 3 arranged, in particular in the central portion of the length and / or width of the front of the housing 18 as best seen from a synopsis of the 4 and 7 is apparent. This makes it possible relatively large or large-volume housing 3 , Especially with relatively large-scale front of the housing 18 Made of plastic, which nevertheless ensure a high level of robustness and safety in terms of electrical safety or insulation reliability. In particular, can thereby housing 3 be created from plastic, which in relation to the front of the housing 18 have a width and height dimensions between 15 cm and 60 cm, preferably between 20 cm and 50 cm, and still have a high robustness and dimensional stability and excellent resistance to breakage.

It may also be expedient if at least individual webs 43 . 44 of the molding 38 , especially separating and supporting function taking over webs 44 of the molding 38 , at a predefined distance 52 to the circuit board 7 are distanced. In particular, it is advantageously 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 molding 38 and the top of the circuit board 7 to provide as best as possible from the 6 and 7 is apparent. As a result, direct introduction of force from the molded part 38 on the underlying or behind board 7 held back. Nevertheless, this relatively small distance 52 a reliable or adequate electrical separation between the mutually delimited subsections or subregions 40 . 41 . 42 with different electrical voltage levels on the PCB 7 or within the housing 3 achieved. In particular, this avoids that, in the case of a defect, a live element of a first partial section or partial region 41 with a first voltage range in an adjacent or adjacent section or sub-area 42 be shifted with significantly different voltage ranges or can go over. 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.

How best to look 6 it can be seen, at least individual webs 43 of the molding 38 at least one breakthrough 53 have, in particular a plurality of ventilation slots 54 include. These breakthroughs 53 or ventilation slots 54 are for air exchange between adjacent subareas 40 . 41 . 42 in the case 3 or provided between mutually spaced housing sections. This will cause localized temperature increases in the enclosure 3 held back.

The molding 38 may further be formed such that at least individual webs 43 . 44 of the molding 38 a cable duct 55 - 3 . 6 and 7 - Form, are provided for holding cable sections, or delimit cable sections with respect to adjacent housing sections electrically insulating. According to an expedient embodiment, the electrical leads or cable sections are at one of the housing front side 18 mounted, the second interface 12 forming socket 14 of individual jetties 43 of the molding 38 held, as previously explained.

The molded plastic preferably molded part 38 In this case, at least in sections, it can also be designed like a hood, in order to produce electrotechnical components 2 , which carry dangerous contact voltage, to cover and protect in the manner of a fairing hood from careless access. The molding 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 shown in the 3 and 7 is exemplified. With each other distanced housing parts 16 . 17 - according to 3 . 4 - is the molding 38 removed from the housing interior or between the housing parts 16 . 17 used. At the planned position of the molding 38 preferably by positive engagement with respect to the first and / or further housing part 16 . 17 held at its intended location in the housing interior. The in the 3 . 4 illustrated side panels for strength-relevant basic housing or the cladding element 30 can be made of plastic or metal and are used primarily for the simplest possible or inexpensive individualization of the visual appearance of the charging connection device 1 ,

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

The embodiments show possible embodiments of the charging connection device 1 , It should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather also various combinations of the individual embodiments are possible with each other and this possibility of variation due to the teaching of technical action by objective invention in the ability of this on this technical Area professional. 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 taken from 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 information on ranges of values in objective description should be understood to include any and all portions thereof, e.g. For example, the indication 1 to 10 is to be understood as meaning that all subregions are included, starting from the lower limit 1 and the upper limit 10, that is to say from FIG. H. all subareas start with a lower bound of 1 or greater and end at an upper bound 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 in the 1 to 7 shown execution details 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.

LIST OF REFERENCE NUMBERS

1

Charging port device

2

elektrotechn. components

3

casing

4

contactor

5

GFCI

6

terminal

7

circuit board

8th

Control and / or evaluation device

9

Communication Interface

10

first interface

11

Housing cover surface

12

second interface

13

second interface

14

receptacle

15

cable outlet

16

first housing part

17

further housing part

18

Housing front

19

Case back

20

sealing element

21

sealing element

22

cover

23

cover

24

Plastic part

25

Plastic part

26

Rear panel

27

wall web

28

Housing front wall

29

wall web

30

cladding element

31

breakthrough

32

inside

33

top

34

gap

35

gap

36

gap

37

breakthrough

38

molding

39

Recording or connection area

40

subregion

41

subregion

42

subregion

43

web

44

web

45

web

46

terminal area

47

terminal area

48

Support foot

49

The End

50

distance

51

inside

52

distance

53

breakthrough

54

vent

55

Cable channel

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 4532418 A [0005]
• DE 4213414 C2 [0005]
• FR 2766950 A1 [0005]
• JP 11-122714A [0005]
• US 6362594 B2 [0005]
• WO 2007/141543 A2 [0005]
• WO 2010/011545 A1 [0005]
• WO 2010/133959 A2 [0005]
• AT 507605 A1 [0005]
• US 6316908 B2 [0009]

Claims (17)

Charging connection device ( 1 ) for electric vehicles, with at least a first interface ( 10 ) for feeding electrical energy from a stationary power supply network into 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 electrotechnical components ( 2 ) for switching, measuring or monitoring the recorded and / or the emitted electrical energy, and with one of the electrical components ( 2 ) enclosing, multi-part housing ( 3 ), which at least from a first and a further housing part ( 16 . 17 ), wherein the housing ( 3 ) and sealing elements ( 20 . 21 ) the electrical components incorporated therein ( 2 ) protect against contact by persons and against moisture and dirt, characterized in that at least the first housing part ( 16 ), which at least parts of the housing front side ( 18 ) defined as molded plastic part ( 24 ) is formed, and that in the interior of the housing ( 3 ) at least one structurally independently formed molded part ( 38 ) with a plurality of webs ( 43 - 45 ) is arranged made of plastic, wherein at least individual webs ( 43 - 45 ) of the molded part ( 38 ) substantially perpendicular to the front of the housing ( 18 ) and back of the housing ( 19 ) are aligned and in the housing interior spatially separated subregions ( 40 - 42 ) train. Charging connection device according to claim 1, characterized in that at least individual webs ( 43 . 44 ) of the molded part ( 38 ) on the rear wall of the housing ( 26 ) are supported load transfer. Charging connection device according to claim 1 or 2, characterized in that at least individual webs ( 43 . 44 ) of the molded part ( 38 ) with her to the front of the housing ( 18 ) nearest end ( 49 ) at a distance ( 50 ) to the inside ( 51 ) of the housing front wall ( 28 ) are spaced. Charging connection device according to claim 3, characterized in that the distance ( 50 ) is between 1 mm and 20 mm, preferably between 2 mm and 10 mm, in particular approximately 6 mm. 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 center area 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. Charging connection device according to one of the preceding claims, characterized in that individual electrotechnical components ( 2 ) on a printed circuit board ( 7 ) are arranged and electrically connected via their interconnects, 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 in sections with different electrical voltage ranges on the circuit board ( 7 ) subdivide. Charging connection device according to one of the preceding claims, characterized in that individual electrotechnical components ( 2 ) on an electrically multilayer printed circuit board ( 7 ) are arranged and electrically connected via the conductor tracks, and that on the circuit board ( 7 ) outer electromagnetic shielding surfaces and internal electrical signal paths are formed. Charging connection device according to claim 6, characterized in that at least individual webs ( 43 . 44 ) of the molded part ( 38 ) at a distance ( 52 ) of less than 2 mm, preferably less than 1 mm, in particular less than 0.7 mm to the printed circuit board ( 7 ) are distanced. Charging connection device according to one of the preceding claims, characterized in that at least individual webs ( 43 ) of the molded part ( 38 ) at least one breakthrough ( 53 ), in particular ventilation slots ( 54 ) for air exchange between adjacent subregions ( 40 - 42 ) or between spaced-apart housing sections form. Charging connection device according to one of the preceding claims, characterized in that at least individual webs ( 43 . 44 ) of the molded part ( 38 ) a cable management channel ( 55 ), are provided for holding cable sections, or cable sections with respect to adjacent sections ( 42 ) in the housing interior to isolate electrically insulating. Charging connection device according to claim 10, characterized in that the von Stegen ( 43 . 44 ) of the molded part ( 38 ) held or guided cable sections through the electrical leads to one on the front of the housing ( 18 ), the second interface ( 12 ) forming socket ( 14 ) are formed. Charging connection device according to one of the preceding claims, characterized in that the housing ( 3 ) with respect to the front of the housing ( 18 ) Has width and height dimensions between 15 cm and 60 cm, preferably between 20 cm and 50 cm. Charging connection device according to one of the preceding claims, characterized in that the strength-relevant, first housing part ( 16 ) at least in sections, in particular in the region of the edges, of a cage, shell or hood-like cladding element ( 30 ) is covered. 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. Charging connection device according to one of the preceding claims, characterized in that on the first housing part ( 16 ) one the second interface ( 12 ) forming socket ( 14 ) is attached load-bearing. Charging connection device according to one of the preceding claims, characterized in that the housing rear side ( 19 ) forming, further housing part ( 17 ) is executed shell-like and the rear wall ( 26 ) with wall webs running along its peripheral portion ( 27 ). Charging connection device according to one of the preceding claims, characterized in that the housing front side ( 18 ) defining, first housing part ( 16 ) is executed shell-like and at least partial sections of the housing front wall ( 28 ), which at least along sections of its circumference substantially perpendicular to the front of the housing ( 18 ) extending wall webs ( 29 ).

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