Switchgear system with basic module and functional module, basic module, and functional module

Abstract

The present invention relates to a switchgear system (100) having a basic module (200) and at least one functional module (300), wherein the basic module (200) has a basic housing (201) with a first housing side (202) and a second housing side (204), wherein the functional module (300) has a functional housing (301) with a housing underside (302), wherein a circulation channel (215) is arranged in the basic housing (201), wherein an air flow can circulate in the circulation channel (215), wherein each basic connection element (203) has a circulation opening (217) which is fluid-technically connected to the circulation channel (215), wherein the functional connection element (303) has coupling openings (309) which are fluid-technically connected to the interior of the functional housing (301), wherein the coupling openings (309) can be coupled to the circulation openings (217), and wherein, in the coupling of the coupling openings (309) to the circulation openings (217), a fluid-technical connection exists between the circulation channel (215) and the interior of the functional housing (301), and a fluid-technically closed circulation loop (101) including the circulation channel (215) and the interior of the functional housing (301) is formed, in which the air flow can circulate. The present invention also relates to a basic module (200) and a functional module (300).

Description

Technical Field

[0001] The present invention relates to a switchgear system having a basic module and functional modules. In addition, the present invention relates to a basic module and functional modules for a switchgear system. Background Art

[0002] In a modularly constructed fieldbus system, for example, which can be used in an automation system, the functional modules can be directly connected to each other or each connected to a basic module. In the case of the latter variant, data terminals and extra-low voltage terminals can be provided on the basic module to which the functional modules are connected. Thereby, a simple structure of the modular fieldbus system is possible. Here, the functional modules can assume different functions and are designed, for example, as input modules, output modules, SPS control modules, motor control modules or power modules. Through the fieldbus or an interface where the components in addition to the fieldbus for data communication are a voltage supply with extra-low voltage, not only a communication possibility but also a voltage supply with extra-low voltage is provided.

[0003] Therefore, a disadvantage of such a fieldbus system is that a separate power interface must be provided for the functional modules, for example, a motor control device that requires a higher voltage. Thereby, when the functions of a switchgear are to be provided via a fieldbus system, the cabling and installation of such a fieldbus system are complex. Here, the switchgear can include electrical and electronic components of a method technology device, a machine tool or a manufacturing device that are not directly located in the machine.

[0004] For a switchgear system, especially a modular switchgear system having a basic module and a plurality of functional modules connectable to the basic module, the problem exists that there is excessive heat dissipation of the individual electrical and electronic components of the basic module or the functional modules. For a switchgear system that, based on the specified application area, for example, must meet the protection type IP67 and thus must be dust-proof and completely prevent contact with the switchgear system, there is a problem of cooling or removing the heat generated by the electrical or electronic components. Due to the necessarily airtight or fluid-tight design of the housings of the individual modules of the switchgear system, it is technically costly, expensive and associated with the use of additional components to use an external active cooling device in which the heat generated is dissipated by actively introducing an external coolant, and these components increase the space requirement of the switchgear system. Therefore, for many application areas, such an active external cooling solution is not attractive. Summary of the Invention

[0005] The object of the present invention is to provide a switchgear cabinet system having a basic module and at least one functional module, which switchgear cabinet system has an improved cooling mechanism. In addition, the object of the present invention is to provide a basic module and a functional module for a switchgear cabinet system having an improved cooling mechanism.

[0006] These objects are solved by the switchgear cabinet system, basic module and functional module of the present invention. Further improvement solutions are given in the embodiments.

[0007] According to one aspect of the present invention, there is provided a switchgear cabinet system having a basic module and at least one functional module, wherein the basic module has a basic housing with a first housing side and a second housing side, wherein a plurality of basic connection elements with basic voltage terminals and basic data terminals are arranged on the first housing side, wherein at least one data line with a plurality of switching units is arranged in the basic housing, the switching units being connected via the data line to the basic data terminals of the basic connection elements, and at least one voltage line is arranged, the voltage line being connected to the basic voltage terminals of the basic connection elements, wherein the functional module has a functional housing with a housing lower side, wherein functional connection elements with voltage terminals and data terminals are arranged on the housing lower side, wherein at least one electronic functional circuit is arranged on the functional housing, the electronic functional circuit being connected to the voltage terminals and data terminals of the functional connection elements, wherein by coupling the functional connection elements to one of the basic connection elements, the functional module can be connected to the basic module and the connection of the voltage terminals and data terminals of the functional connection elements to the basic voltage terminals and basic data terminals of the basic elements can be achieved, wherein a circulation channel is arranged in the basic housing, wherein an air flow can circulate in the circulation channel, wherein each basic connection element has a circulation opening, the circulation openings being fluid-technically connected to the circulation channel, wherein the functional connection elements have coupling openings, the coupling openings being fluid-technically connected to the interior of the functional housing, wherein the coupling openings can be coupled to the circulation openings, and wherein in the coupling of the coupling openings to the circulation openings, a fluid-technical connection exists between the circulation channel and the interior of the functional housing, and a fluid-technically closed circulation loop including the circulation channel and the interior of the functional housing is formed, and the air flow can circulate in the circulation loop.

[0008] This achieves the technical advantage that a switchgear system can be provided in which electrical and electronic components or elements of the switchgear system can be cooled by means of a passive cooling device. For this purpose, the basic module of the switchgear system provides a circulation channel in which an air volume can circulate. In addition, the basic module has a plurality of circulation openings which are in fluid-technical connection with the circulation channel and are integrated into a plurality of basic connection elements which are used to couple the functional modules of the switchgear system to the basic module. The functional modules of the switchgear system have corresponding coupling openings which are in fluid-technical connection with the interior of the functional housing of the corresponding functional module and are integrated into the corresponding functional connection elements of the functional module.

[0009] By coupling the functional connection elements of the functional module with the corresponding basic connection elements of the basic module, the connection between the functional module and the basic module is achieved. The fluid-technical connection between the interior of the functional housing of the functional module and the circulation channel of the basic module is realized by coupling the coupling openings of the functional connection elements of the functional module with the circulation openings of the corresponding basic connection elements of the basic module. Therefore, through the fluid-technical connection between the interior of the functional housing of the functional module and the circulation channel of the basic module, the exchange of air within the functional housing of the functional module and the air volume within the circulation channel of the basic module can be achieved. Therefore, through the fluid-technical connection between the interior of the functional housing of the functional module and the circulation channel of the basic module, a self-closed circulation loop can be established, which is composed of the interior of the functional housing of the functional module and the circulation channel, and in which a circulation or a circulating air flow of the air volume contained therein can be generated.

[0010] Therefore, by circulating the air volume within or along the circulation loop, the heat generated due to the operation of the electronic functional circuits arranged within the functional housing of the functional module can be transported out and thus the cooling effect of the functional circuits can be achieved. In particular, the formation of heat accumulation bubbles within the functional housing can be avoided by the circulation of the air volume within the functional housing.

[0011] Thermal accumulation bubbles are described herein as heating of the air volume of one or more components surrounding an electronic functional circuit, which heating results in a substantial and strongly local temperature increase of the air volume surrounding the respective component or components due to insufficient mixing of the heated air volume with other air volumes within the functional housing. This can cause overheating of the respective components of the functional circuit and related damage to the components. By means of air circulation within the functional housing, the thermal accumulation bubbles can be agitated and thus overheating of the air volume surrounding the functional circuit can be avoided. Thus, passive cooling of the functional circuit or of the components and elements of the functional circuit can be achieved.

[0012] Furthermore, the circulation circuit is a self - enclosed circuit in which an exchange of the air volume within the circulation circuit with the ambient air surrounding the switchgear system is avoided. Thereby, passive cooling of the components and elements of the functional modules of the switchgear system can be achieved and the dust - tightness or fluid - tightness of the switchgear system can be ensured.

[0013] By integrating the circulation openings fluid - technically connected to the circulation channels into the basic connection elements of the basic module, or by integrating the coupling openings fluid - technically connected to the interior of the functional housing of the functional module into the functional connection elements of the functional module, it is possible to achieve: by connecting the functional module to the basic module, by coupling the functional connection elements of the functional module to the corresponding basic connection elements of the basic module, the automatic coupling of the functional module to the circulation circuit of the switchgear system. Thus, the functional modules connected to the basic module of the switchgear system are automatically integrated into the circulation circuit and participate in passive cooling by means of the air circulation within the circulation circuit, which air circulation is responsible for the air circulation within the interior of the functional housing of the respective functional module. Thus, there is no need to additionally connect the respective functional modules to an additional cooling system.

[0014] Furthermore, by means of a plurality of basic connection elements and the circulation openings integrated therein, a plurality of functional modules can be integrated into the circulation circuit and thus participate in the air circulation within the circulation circuit and the associated cooling.

[0015] By means of a functional circuit within the respective basic voltage terminals or basic data terminals within the functional module or within the basic module, the common functions of the switchgear system can be provided.

[0016] The voltage lines can include ultra - low - voltage lines and low - voltage lines. The voltage terminals can correspondingly include ultra - low - voltage terminals and low - voltage terminals.

[0017] Ultra-low voltage shall here be a voltage of up to 50 V AC and / or 120 V DC, in particular a voltage of up to 25 V AC and / or 60 V DC. This definition of ultra-low voltage can be found in the IEC60449 standard. Low voltage shall here be a voltage above the said ultra-low voltage and up to 1000 V AC and / or 1500 V DC. It can also be stipulated that a supply voltage is provided for the communication electronic device via the said data line. The supply voltage can be in the range of a few volts.

[0018] The maximum current intensity that can be provided via the ultra-low voltage terminal can be 40 A. The maximum current intensity that can be provided via the low voltage terminal can be 75 A.

[0019] The low voltage can be provided for the functional module via the said low voltage line and low voltage terminal.

[0020] A fieldbus that can be used for communication between the basic module and the functional module can be provided via the said data terminal. Here, the fieldbus can be designed as the fieldbus defined in the IEC61158 standard, in particular as EtherCAT.

[0021] The switching-on units, which can also be referred to as slaves, are interconnected via a data bus and form a communication network in this switchgear system. Thus, the switching-on units can exchange data with each other. The switching-on units connected to the said connecting element can also communicate or exchange data between the basic module and the functional module. All the switching-on units are arranged in the basic module. Thereby, the basic module offers the advantage that, in the event of a malfunction or replacement of a functional module, all still fully functional functional modules can respond via the data bus. For this reason, it is also possible to replace functional modules during the continuous operation of the automation system. In addition, if a functional module with a configuration replacing the functional module is connected to the basic module, the automation system does not need to be initialized. If this automation system is used, for example, in a production machine, this can prevent an undesired production interruption.

[0022] Thereby, the functions conventionally provided by means of a switchgear can be provided by such a basic module and the associated functional modules. Other advantages are reduced cabling costs and simpler planning or engineering of such a switchgear system.

[0023] The basic housing or functional housing can be implemented as an extruded profile or a die-cast housing. Metals such as aluminum, steel, stainless steel or zinc can be considered as housing materials, where additionally a coating of the housing can be provided.

[0024] The basic housing or functional housing can consist of multiple single components, which are interconnected by fastening elements, such as screws, or by welding or soldering. Additionally, seals can be provided between the single components to make the basic housing or functional housing between the single components inaccessible to liquids and / or dust.

[0025] Data lines, ultra-low voltage lines, and low voltage lines can be arranged on one or more printed circuit boards within the basic housing. In particular, one printed circuit board can be provided for the data lines and ultra-low voltage lines, and another circuit board for the low voltage lines. The data lines can have multiple core wires. The ultra-low voltage lines can have multiple core wires. The low voltage lines can have multiple core wires. If the data lines, ultra-low voltage lines, or low voltage lines are arranged on a printed circuit board, the core wires can be implemented as conductor circuits on the corresponding circuit board.

[0026] The basic voltage terminals or basic data terminals of the basic module or functional module can be designed as plug connectors and corresponding sockets. Alternatively, the connecting elements can have cable entries and terminal blocks.

[0027] The functions of a switchgear can be provided by means of multiple functional modules, where the functional modules are not directly interconnected, but the connection of the functional modules is provided by the basic module.

[0028] The functional modules within this switchgear system can be designed as input modules for reading sensor data, output modules for outputting voltage, SPS control modules, motor control modules, power supply modules, and / or feeding modules. The feeding module can here undertake the task of providing data for the basic module, in particular in the form of a fieldbus, and / or for supplying ultra-low voltage and / or low voltage to the basic module. Additionally, computer modules, network switch modules, servo control modules, grid filter modules, protection modules, bus coupler modules, active or passive power factor correction modules, and / or frequency converter modules, or combinations of the mentioned modules, can be implemented as functional modules.

[0029] It can be stipulated that seals are additionally installed between the basic module and the functional module in order to implement the system consisting of the basic module and the functional module in a dust-proof and liquid-proof manner. Preventing contact can already be achieved by mounting the functional module on the basic module. In order to undertake different tasks, it can be stipulated that the module housing has additional connecting elements on one of the other module housing sides, which are connected, for example, to sensors, actuators, or other elements typically controlled by the switchgear.

[0030] According to a second aspect of the present invention, a basic module for a switchgear system is provided, wherein the basic module has a basic housing with a first housing side and a second housing side, wherein a plurality of basic connection elements with basic voltage terminals and basic data terminals are arranged on the first housing side, wherein at least one data line with a plurality of switching units connected to the basic data terminals of the basic connection elements is arranged in the basic housing, and at least one voltage line is arranged, which is connected to the basic voltage terminals of the basic connection elements, wherein a circulation channel is arranged in the basic housing, wherein an air flow can circulate in the circulation channel, wherein each basic connection element has a circulation opening, wherein the circulation opening is fluid-technologically connected to the circulation channel, wherein the circulation opening can be coupled to a coupling opening of a functional module of the switchgear system, and wherein, in the coupling of the circulation opening and the coupling opening of the functional module, a fluid-technological connection between the circulation channel and the interior of the functional housing can be achieved, and a fluid-technologically closed circulation loop including the circulation channel and the interior of the functional housing can be formed, and the air flow can circulate in the circulation loop.

[0031] Thereby, such a technical advantage is achieved that a basic module for a switchgear system with the above advantages can be provided. By means of the circulation channel within the basic housing of the basic module and the circulation openings integrated into the basic connection elements of the basic module and fluid-technologically connected to the circulation channel, a circulation loop can be generated with the corresponding functional modules of the switchgear system, which circulation loop enables the circulation of the air volume within the circulation channel and within the functional housing of the functional modules connected to the basic module, and enables the associated passive or active cooling of the electronic or electrical components of the functional modules.

[0032] Thereby, a basic module for a switchgear system can be provided that is dust-proof and fluid-tight and has passive or active cooling in the form of an air flow circulating in a fluid-technologically closed circulation loop.

[0033] According to a third aspect of the present invention, there is provided a functional module for a switchgear system, wherein the functional module has a functional housing with a lower side of the housing, wherein a functional connection element with voltage terminals and data terminals is arranged on the lower side of the housing, wherein at least one electronic functional circuit is arranged in the functional housing, and the electronic functional circuit is connected to the voltage terminals and data terminals of the functional connection element, wherein through the coupling of the functional connection element of the switchgear system with the basic connection element of the basic module, the functional module can be connected to the basic module, and the connection between the voltage terminals and data terminals of the functional connection element and the basic voltage terminals and data terminals of the basic element can be realized, wherein the functional connection element has a coupling opening, wherein the coupling opening is connected to the interior of the functional housing in fluid technology, wherein the coupling opening can be coupled to the circulation opening of the basic module of the switchgear system, and wherein in the coupling of the coupling opening and the circulation opening, the connection between the circulation channel of the basic module and the interior of the functional housing in fluid technology can be realized, and a fluid-technologically closed circulation loop including the circulation channel and the interior of the functional housing can be formed, and an air flow can circulate in the circulation loop.

[0034] Thereby, such a technical advantage is achieved that a functional module for a switchgear system with the above advantages can be provided. Through the coupling opening integrated into the functional connection element of the functional module and connected to the interior of the functional housing of the functional module in fluid technology, the connection between the interior of the functional housing of the functional module and the circulation channel of the basic module in fluid technology can be realized by means of the coupling of the coupling opening with the circulation opening of the basic connection element of the switchgear system, and thus the interior of the functional housing of the functional module is integrated into the fluid-technological circulation loop of the switchgear system, thereby realizing the circulation of the air volume within the functional housing of the functional module, and the related passive or active cooling of the electronic and electrical components of the functional module can be realized.

[0035] Thereby, a functional module for a switchgear system with passive or active cooling in the form of an air flow circulating in a fluid-technologically closed circulation loop, dust-proof and fluid-sealed can be provided.

[0036] According to an embodiment, the switchgear system further includes a fan element, wherein the fan element is integrated into the fluid-technological circulation loop, and wherein the fan element is configured to accelerate the circulating air flow within the circulation loop.

[0037] This achieves the technical advantage that the circulation of the air flow within the circulation channel can be improved. By operating the fan element arranged in the circulation loop of the switchgear system, the circulation speed of the air flow circulating in the circulation loop can be increased. Thereby, the agitation of the air volume inside the functional housing of the functional module of the switchgear system can be enhanced, and thus the dispersion of possible heat accumulation bubbles can be improved. Thereby, closed active cooling can be achieved and the cooling effect within the switchgear system can be enhanced. By increasing the circulation of the air volume within the functional housing of the functional module of the switchgear system, the formation of heat accumulation bubbles can be avoided or the formed heat accumulation bubbles can be disrupted, and the heat generated therein can be transported to the circulation channel of the basic module.

[0038] In the sense of the present application, closed active cooling is a cooling in which there is no coolant exchange between the surrounding environment and the system to be cooled.

[0039] According to one embodiment, the fan element is arranged in the functional housing of the functional module and / or in the circulation channel of the basic module.

[0040] This achieves the technical advantage that the flexibility of the design of the cooling system can be realized. According to the requirements of the switchgear system, the fan element can be arranged within the functional housing of the functional module and / or in the circulation channel of the basic module. For the case of the basic module that requires a small space requirement due to the application, the fan element can thus be arranged in the functional housing of the functional module of the switchgear system. For the case of the functional module that requires as small a space requirement as possible, on the other hand, the fan element can be arranged in the circulation channel of the basic module. Alternatively, the switchgear system can also be provided with a plurality of fan elements, either by arranging a plurality of fan elements in the circulation channel of the basic module or by arranging the fan element not only in the circulation channel but also in the functional housing of one or more functional modules of the switchgear system. Thereby, a separately designable cooling device can be provided according to the application requirements.

[0041] In particular, the movement of the circulating air flow and the associated cooling effect can be arbitrarily scaled by a plurality of functional modules each having a fan element, by connecting other functional modules with other fan elements to the basic module when the cooling demand increases, and by removing these functional modules from the basic module when the cooling demand decreases. Alternatively, the functional module can also be designed as a cooling module, wherein the cooling module does not have a functional circuit and is only designed with one or more fan elements. Therefore, the cooling module is only used in the switchgear to drive the air flow within or along the circulation loop.

[0042] According to one embodiment, an adjusting mechanism is arranged at the circulation opening, wherein the adjusting mechanism is configured to adjust the volume of the air flow passing through the circulation opening.

[0043] Thereby, such a technical advantage is achieved that it can be ensured that a plurality of functional modules are evenly connected to the circulation loop. When connecting a plurality of functional modules to the basic module, these functional modules are respectively connected to the circulation channel via corresponding connecting elements and the coupled openings or circulation openings connected therein in sequence along the flow direction of the circulating air flow within the circulation channel of the basic module. The air flow from the circulation channel to the interior of the functional housing of the functional module connected to the basic module can be adjusted by means of a plurality of adjusting mechanisms arranged at the corresponding circulation openings, such that each functional module is supplied with sufficient air flow within the circulation channels of the functionally stacked functional modules along the flow direction of the air flow. Alternatively, the adjustment of the air flow flowing from the functional housing into the circulation channel can also be achieved.

[0044] Thereby, it can be ensured that for each functional module connected to the basic module, it is possible to achieve the same flow of the circulating air flow through the corresponding functional housing and, in connection therewith, the same cooling effect, such that the positioning of the individual functional modules on the basic module has no influence on the cooling power achieved within the corresponding functional housing of the functional module. Therefore, it is possible to ensure the uniform cooling of a plurality of functional modules.

[0045] According to one embodiment, each coupling opening respectively has a coupling flange, wherein the coupling flange surrounds the coupling opening and projects from the functional connecting element, wherein the coupling flange can be inserted into the circulation opening and can achieve the coupling between the coupling opening and the circulation opening, and wherein a fluid-tight connection between the functional module and the basic module is achieved through the coupling between the coupling opening and the circulation opening.

[0046] Thereby, such a technical advantage is achieved that a fluid-tight connection between the functional module and the basic module of the switchgear system can be achieved through the connection between the functional connecting element and the corresponding basic connecting element. By inserting the coupling flange of each coupling opening of the functional connecting element of the functional module into the corresponding circulation opening of the basic connecting element of the basic module, a fluid-tight connection between the coupling opening and the corresponding circulation opening of the corresponding connecting element can be achieved. By inserting the coupling flange into the corresponding circulation opening, the fluid tightness of the switchgear system can thereby be ensured. In addition, the coupling flange projecting from the corresponding functional connecting element facilitates the connection of the corresponding functional module to the basic module by inserting the corresponding coupling flange into the corresponding circulation opening of the corresponding basic connecting element.

[0047] According to one embodiment, a sealing mechanism is arranged on the circulation opening, and wherein the sealing mechanism is configured to fluid-tightly close the circulation opening of the basic connection element on which no functional module is connected.

[0048] Thereby, such a technical advantage is achieved that a fluid-tight closure of the circulation passage of the basic module is realized with respect to the ambient air surrounding the switchgear system. By means of the sealing mechanism arranged on the circulation opening of the basic connection element of the basic module, the circulation opening of the coupling opening on which no functional module is connected can be fluid-tightly closed with respect to the ambient air of the switchgear system. Thereby, it can be achieved that even when not all basic connection elements of the basic module are fully occupied by the corresponding functional modules, the circulation passage is fluid-tightly closed with respect to the ambient air surrounding the switchgear system.

[0049] According to one embodiment, a guiding mechanism is arranged inside the functional housing of the functional module, wherein the guiding mechanism is configured to guide the air flow flowing into the interior of the functional housing through the coupling opening to a predetermined area inside the functional housing.

[0050] Thereby, such a technical advantage is achieved that the circulation inside the functional housing of the functional module connected to the basic module can be enhanced. By means of the correspondingly arranged and configured guiding mechanism inside the functional housing, the air flow flowing through the coupling opening of the functional connection element of the functional module is introduced into the corresponding area inside the functional housing. These areas can be, for example, the areas where the components of the electronic functional circuit are arranged, and these components have high heat dissipation. In addition, the guiding mechanism can be configured to guide the air flow to as comprehensive an area as possible of the functional housing, so that as large a part as possible of the components of the electronic functional circuit is circulated by the air flow flowing through the functional housing. Thereby, as effective a circulation as possible of the air volume inside the functional housing can be achieved, so that as effective an agitation as possible of the possible heat accumulation bubbles can be realized and, in connection therewith, as effective a cooling as possible of the electronic functional circuit inside the functional housing of the functional module can be realized. In addition, the functional mechanism can also be designed to accelerate the air flow inside the functional housing, thereby also achieving a further improvement in the cooling effect or cooling power.

[0051] According to one embodiment, the guiding mechanism includes a guiding nozzle arranged on the coupling opening, and the guiding nozzle is suitable for guiding the air flow to a predetermined area inside the functional housing.

[0052] The technical advantages achieved thereby are that a design solution of the guiding mechanism as simple as possible is realized. The functional nozzle arranged at the coupling opening can be constructed as space-saving as possible here, so that the guiding mechanism requires as little structural space as possible within the functional housing. In addition, a design solution of the guiding mechanism in the form of a guiding nozzle that is as robust as possible can be realized. With this design solution of the guiding nozzle, an accurate and directional guidance of the air flow can be achieved within the functional housing. In addition, the guiding nozzle is a technically simple solution for the guiding mechanism.

[0053] According to one embodiment, the guiding mechanism includes a guiding fan element arranged inside the housing.

[0054] The technical advantages achieved thereby are that an effective circulation of the air volume within the functional housing can be provided. By the guiding fan element arranged within the functional housing, the air flow passing through the coupling opening can be effectively distributed inside the functional housing, thereby realizing an effective and efficient agitation of possible heat accumulation bubbles. In addition, the speed of the air flow passing through the coupling opening can be increased by the guiding fan element, whereby the agitation of the air volume within the functional housing can be further enhanced, and thereby a further improvement of the cooling effect can be realized. In addition, the guiding fan element is a technically simple solution for the guiding mechanism. Alternatively, multiple guiding fan elements can be constructed in a functional housing.

[0055] According to one embodiment, the guiding mechanism includes a guiding channel, wherein the guiding channel has a fluid-technical connection to at least one of the coupling openings, and wherein the guiding channel is configured to guide the air flow to a predefined area within the functional housing.

[0056] The technical advantages achieved thereby are that a design solution of the guiding mechanism in the form of one or more guiding channels connected to the corresponding coupling openings that is as simple as possible technically can be provided. Here, the guiding channel can guide the air flow passing through the coupling opening to the corresponding area within the functional housing, in which, for example, components of the functional circuit are arranged, and these components have as strong heat dissipation as possible. Alternatively, the air flow can be guided through one or more guiding channels to as comprehensive an area as possible within the functional housing, so that as large a part as possible of the components of the electronic functional circuit is circulated by the air flow. Thereby, a separate and improved cooling power can be achieved.

[0057] Alternatively, a combination of a guiding nozzle, a guiding fan element, and a guiding channel can also be constructed in a functional housing.

[0058] According to one embodiment, the circulation channel is in thermal contact with at least one inner wall of the basic housing of the basic module.

[0059] Thereby, such a technical advantage is achieved that further cooling of the air volume of the circulation loop can be provided. By the thermal contact between the circulation channel and at least one inner wall of the basic housing of the basic module, the circulation channel can absorb the heat within the air flow flowing through the circulation channel and output it to the inner wall of the basic housing. Thereby, the cooling effect of the air flow within the circulation loop can be achieved. Therefore, by cooling the air flow within the circulation channel, an increased cooling power can be achieved within the functional modules connected to the basic module, in such a way that the heat generated by the components of the electronic functional circuits of the functional modules and absorbed during the air flow passing through the functional housing of the connected functional modules is output to the housing of the basic module via the air flow flowing from the functional modules into the circulation channel of the basic module, thereby achieving an improved cooling effect of the air flow circulating through the components of the functional circuits of the functional modules connected to the basic module.

[0060] According to one embodiment, the circulation channel includes a first partial channel, a second partial channel, a third partial channel, and a fourth partial channel, wherein the first partial channel and the second partial channel are arranged parallel to each other, wherein the third partial channel and the fourth partial channel are arranged parallel to each other, wherein each basic connection element has a first circulation opening and a second circulation opening, wherein the first circulation opening is fluid-technically connected to the first partial channel, and the second circulation opening is fluid-technically connected to the second partial channel, wherein the functional connection element has a first coupling opening and a second coupling opening, wherein the first coupling opening and the second coupling opening are respectively fluid-technically connected to the interior of the functional housing, wherein the first coupling opening can be coupled to the first circulation opening and the second coupling opening can be coupled to the second circulation opening, and wherein a pressure difference can be achieved by the air flow circulating between the first partial channel and the second partial channel.

[0061] Thereby, such a technical advantage is achieved that the cooling power of the passive or closed active cooling of the switchgear system can be further increased. By the design of the circulation channel having a first partial channel, a second partial channel, a third partial channel, and a fourth partial channel, wherein the first and second partial channels and the third and fourth partial channels are respectively arranged parallel to each other, a design of the circulation channel that is as simple as possible can be achieved. Thereby, the manufacturing of the basic module is simplified. In addition, by the circulation of the air flow within the circulation channel in a predetermined circulation direction, a pressure difference between the first partial channel and the second partial channel can be achieved.

[0062] By configuring the circulation opening as a first circulation opening and a second circulation opening, wherein the first circulation opening is in fluid-technical connection with the first circulation channel and the second circulation opening is in fluid-technical connection with the second circulation channel, it is possible to achieve that, depending on the pressure difference between the first partial channel and the second partial channel, the air flow flows out of the circulation channel through the first circulation opening or through the second circulation opening. When connecting the functional module to the basic module, it is thus possible to achieve that, depending on the pressure difference between the first partial channel and the second partial channel, the air flow flows from the circulation channel through the first circulation opening into the functional housing, and the air flow flows from the functional housing through the second coupling opening or the circulation opening back into the second partial channel of the circulation channel.

[0063] Thereby, a predetermined circulation of the air volume within the functional housing of the functional module connected to the basic module can be guided from the first coupling opening towards the second coupling opening in such a way that, due to the pressure difference generated between the first partial channel and the second partial channel, the air flow of the circulation channel enters the interior of the functional housing through the first coupling opening and exits the functional housing through the second coupling opening into the second partial channel of the basic module. Thereby, an effective and efficient agitation of the air volume within the functional housing of the functional module connected to the basic module and the associated cooling of the components of the electronic functional circuit of the functional module can be achieved.

[0064] According to one embodiment, the first coupling opening and the second coupling opening are located on two opposite outermost ends of the functional connection element, and wherein the data terminals and the voltage terminals on the functional connection element are located between the first coupling opening and the second coupling opening.

[0065] Thereby, the technical advantage is achieved that the widest possible distance between the first and second coupling openings of the functional module is realized, whereby it can be ensured that the air flow entering the functional housing through the first coupling opening and exiting the functional housing through the second coupling opening circulates over the widest possible area of the electronic functional circuit arranged in the functional housing. Thereby, an improved cooling effect is achieved.

[0066] According to one embodiment, the switchgear system further includes a heating element, wherein the heating element is integrated into the fluid-technical circulation loop, wherein the heating element is designed to heat the air volume surrounded by the circulation loop, and wherein the heating element is arranged within the functional housing of the functional element and / or arranged within the circulation channel.

[0067] This achieves the technical advantage that condensation of the air moisture in the air volume in the circulation loop can be avoided. In particular, during periods when the switchgear system is not in operation, by operating the heating element, a constant temperature of the air volume in the circulation loop can be ensured, thereby avoiding condensation of the air moisture in the air volume. This can prevent damage to the electronic and electrical components of the functional circuit of the functional module connected to the basic module due to condensation of the air moisture in the air volume in the functional housing, in such a way that the temperature of the air volume can be constantly maintained above the condensation temperature of the air volume by operating the heating element.

[0068] According to one embodiment, the switchgear system further includes a heat exchanger, wherein the heat exchanger is integrated into the circulation loop, wherein the heat exchanger is designed to cool the air flow within the circulation loop, wherein the heat exchanger is an air-air heat exchanger or an air-water heat exchanger, and wherein the heat exchanger is arranged inside the functional housing of the functional module and / or inside the basic housing of the basic module.

[0069] This achieves the technical advantage that the cooling power of the passive or closed active cooling of the switchgear system can be further increased. By arranging the heat exchanger within the circulation loop, further cooling of the air volume in the circulation loop can be achieved. This enables the cooled air volume of the circulation loop to absorb a greater amount of heat generated by the components of the functional circuit of the functional module connected to the basic module.

[0070] By arranging the heat exchanger within the circulation channel of the basic module of the switchgear system or within the functional housing of the functional module, a design solution for the switchgear system with maximum flexibility can be achieved, in such a way that according to the requirements for the structural space of the switchgear system, the heat exchanger can be arranged in the module of the switchgear system that allows for the arrangement based on the required structural space. This can provide a switchgear system with the smallest possible size. In addition, multiple heat exchangers can be arranged within the circulation channel of the basic module or within the functional housings of different functional modules, thereby further increasing the cooling power of the passive or closed active cooling of the switchgear system.

[0071] Alternatively, the heat exchanger can also be designed in the functional housing of the cooling module, wherein the cooling module is a functional module that is only used to cool the air volume within the circulation loop and does not have an electronic functional circuit.

[0072] According to one embodiment, cooling ribs and / or a water cooling device are constructed on the second housing side of the basic housing of the basic module, and / or wherein cooling ribs are constructed on the housing surface of the functional module.

[0073] This achieves the technical advantage that it is possible to further increase the cooling power of the passive or closed active cooling of the switchgear system. By arranging cooling ribs on the second housing side of the basic housing and / or by arranging a water cooling device on the second housing side of the basic housing and / or by arranging additional cooling ribs on the functional housing of the functional module, it is possible to discharge, within the basic housing of the basic module or within the functional housing, the heat generated by the functional modules connected to the basic module to the ambient air surrounding the switchgear system through the corresponding basic housing or functional housing. By arranging cooling ribs on the corresponding housing side, the heat discharge to the ambient air through the corresponding housing is increased. Similarly, the water cooling device on the basic housing achieves an increased discharge of the heat generated within the basic housing to the ambient air surrounding the switchgear system via the basic housing.

[0074] According to one embodiment, an external fan element is constructed on the third housing surface of the basic module, wherein the external fan element is designed to guide cooling air along the cooling ribs, and / or wherein another external fan element is constructed on another housing surface of the functional module, wherein the another external fan element is designed to guide cooling air along the another cooling ribs.

[0075] This achieves the technical advantage that it is possible to further increase the cooling power of the passive or closed active cooling of the switchgear system. By the construction of the external fan element, which is arranged on the outer surface of the basic housing of the basic module or the functional housing of the functional module and is oriented to guide an air flow along the cooling ribs constructed on the basic housing or the functional housing, it is possible to further increase the discharge of the heat generated in the basic housing or the functional housing to the ambient air surrounding the switchgear system through the corresponding housing.

[0076] According to one embodiment, an internal fan element is arranged inside the functional housing, wherein the internal fan element is designed to guide cooling air along at least one inner wall of the functional housing, and / or wherein another internal fan element is arranged inside the basic housing, wherein the another internal fan element is designed to guide cooling air along at least one inner wall of the basic housing.

[0077] This achieves the technical advantage that the cooling power of the passive or closed active cooling of the switchgear system can be further increased. Through the configuration of the internal fan elements, which are arranged within the basic housing of the basic module and / or within the functional housing of the functional modules connected to the basic module and which are configured to direct a cooling air flow to the inner wall of the respective housing, the cooling of the basic housing or the functional housing cannot be achieved. Instead, the cooling of the air volume within the circulation circuit can be achieved by outputting the heat within the air volume to the cooled basic housing or functional housing. By cooling the air volume within the circulation circuit, the ability of the air volume to absorb the heat of the components of the functional circuit of the functional module is increased, thereby increasing the cooling power of the circulation circuit and the associated passive or closed active cooling of the switchgear system.

[0078] According to one embodiment, the components of the electronic functional circuit of the functional module have thermal contact with the inner wall of the housing of the functional housing.

[0079] This achieves the technical advantage that direct cooling of the components of the electronic functional circuit of the functional module connected to the basic module is achieved. By thermally coupling the individual components of the functional circuit to the inner wall of the respective functional housing, the heat generated by the operation of the functional circuit can directly reach the ambient air surrounding the switchgear system through the functional housing. Thereby, a further increase in the cooling power of the passive or closed active cooling of the switchgear system can be achieved.

[0080] According to one embodiment, the functional housing and / or the basic housing are made of a material having a thermal conductivity of at least 10 W / mK.

[0081] This achieves the technical advantage that the heat generated in the basic housing or the functional housing can be discharged to the surroundings of the switchgear system via the respective housing wall as much as possible. For this purpose, the individual housings of the modules of the switchgear system can be made of a favorable metal alloy, which has a high heat conduction capacity and can therefore radiate a high amount of heat to the surroundings of the switchgear system. Thereby, the cooling power of the passive or closed active cooling of the switchgear system is further increased.

[0082] According to one embodiment, the functional housing and / or the basic housing are coated with a coating having a thermal conductivity of at least 10 W / mK.

[0083] Thereby, a further increase in the cooling power of passive or closed active cooling of the switchgear system is achieved. Through the corresponding coatings on the housing walls of the individual modules of the switchgear system, the heat conduction capacity of the individual housings of the modules of the switchgear system can be further increased, whereby the heat located in the corresponding housing can be further radiated to the surrounding environment of the switchgear system through the housing wall.

[0084] In the present invention, features can be designed in an affirmative manner, that is, in an existing manner, or in a negative manner, that is, in a non-existing manner, wherein a negative feature is not explicitly interpreted as a feature unless, according to the present invention, the non-existence of the negative feature is considered important, that is, the actually made invention rather than the invention constructed by the prior art lies in omitting the feature.

[0085] The features of the description can also be interpreted as optional features; that is, each feature can be understood as an optional, arbitrary or preferred feature, that is, as a non-binding feature. Therefore, features can be extracted from the embodiments, including their periphery if necessary, whereupon the features can then be transferred to the general inventive concept. The absence of a feature in an embodiment indicates that the feature is optional with respect to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] In the drawings:

[0087] Figure 1 A perspective schematic view of a switchgear system according to an embodiment is shown;

[0088] Figure 2 Another perspective schematic view of a switchgear system according to another embodiment is shown;

[0089] Figure 3 A schematic top view of a basic module according to an embodiment is shown;

[0090] Figure 4 Another schematic top view of a basic module according to another embodiment is shown;

[0091] Figure 5 A perspective schematic view of a functional module according to an embodiment is shown;

[0092] Figure 6 Shows Figure 5 A schematic bottom view of the functional module in;

[0093] Figure 7 Shows Figure 5 A schematic inner view of the functional module in;

[0094] Figure 8 Shows along Figure 2Schematic sectional view of the switchgear system along the sectional axis A;

[0095] Figure 9 Showing according to another embodiment along Figure 2 Schematic sectional view of the switchgear system along the sectional axis A;

[0096] Figure 10 Showing Figure 5 Another schematic internal view of the functional module in;

[0097] Figure 11 Schematic perspective view of the heating element according to one embodiment;

[0098] Figure 12 Showing Figure 11 Schematic perspective view of the heating element in, wherein the heating element is integrated into the basic module;

[0099] Figure 13 Showing Figure 11 Schematic perspective view of the heating element in, wherein the heating element is integrated into the basic module;

[0100] Figure 14 Schematic perspective view of another switchgear system according to another embodiment;

[0101] Figure 15 Schematic perspective view of another switchgear system according to another embodiment; and

[0102] Figure 16 Schematic perspective view of another switchgear system according to another embodiment.

[0103] List of Reference Numerals

[0104] 100 Switchgear system

[0105] 101 Circulation loop

[0106] 200 Basic module

[0107] 201 Basic housing

[0108] 202 First housing side

[0109] 203 Basic connection element

[0110] 204 Second housing side

[0111] 205 Basic voltage terminal

[0112] 206 Third housing side

[0113] 207 Basic data terminal

[0114] 208 Fourth housing side

[0115] 209 Voltage line

[0116] 211 Data line

[0117] 213 Connecting unit

[0118] 215 Circulation channel

[0119] 217 Circulation opening

[0120] 218 Fan element

[0121] 219 First part of the channel

[0122] 221 Second part of the channel

[0123] 223 Third part of the channel

[0124] 225 Fourth part of the channel

[0125] 227 First circulation opening

[0126] 229 Second circulation opening

[0127] 230 Adjusting mechanism

[0128] 231 Heating element

[0129] 233 Heating wire

[0130] 235 Heating element housing

[0131] 236 Heat exchanger

[0132] 237 Cooling rib

[0133] 239 Water cooling device

[0134] 241 Water supply element

[0135] 243 External fan element

[0136] 300 Functional module

[0137] 301 Functional housing

[0138] 302 Lower side of the housing

[0139] 303 Functional connection element

[0140] 305 Voltage terminal

[0141] 307 Data terminal

[0142] 309 Coupling opening

[0143] 311 Coupling flange

[0144] 313 Electronic functional circuit

[0145] 315 Guide mechanism

[0146] 316 Guide nozzle

[0147] 317 Guide fan element

[0148] 319 Guide channel

[0149] 321 First coupling opening

[0150] 323 Second coupling opening

[0151] 325 Additional cooling rib

[0152] 326 Housing surface

[0153] 327 Additional external fan element

[0154] 328 Additional housing surface

[0155] 329 Components of the electronic functional circuit Detailed implementation

[0156] Next, the present invention will be elaborated in detail by means of an embodiment of a variant of a modular switchgear system. Although the present invention is further described and illustrated in more detail by these embodiments, the present invention is not limited by the disclosed embodiments, but has a more fundamental nature.

[0157] Figure 1 Perspective schematic diagram showing the switchgear system 100 according to an embodiment.

[0158] In Figure 1 the embodiment, the switchgear system 100 includes a basic module 200 and a functional module 300. The functional module 300 is connected to the basic module 200 via corresponding terminals.

[0159] The basic module 200 includes a basic housing 201 having a first housing side 202. A plurality of basic connection elements 203 are arranged on the first housing side 202. Each basic connection element 203 includes a basic voltage terminal 205 and a basic data terminal 207. The basic voltage terminals 205 are connected via a voltage line 209. The basic data terminals 207 are connected via a data line 211. The basic module 200 further includes a plurality of switching units 213, which are connected to the basic data terminals 207 via the data line 211. The basic voltage terminals 205 and the voltage line 209 can provide an ultra-low voltage and / or a low voltage. The switching units 213 can be configured as ASICs, and the data line 211 can be configured as a data bus and provide data communication between the basic module 200 and the functional module 300.

[0160] In addition, the basic module 200 includes a circulation channel 215 constructed inside the basic housing 201. A circulation of an air flow can be realized within the circulation channel 215. Each basic connection element 203 also has a circulation opening 217, which is in fluid connection with the circulation channel 215.

[0161] The functional module 300 has a functional housing 301 and is coupled to the basic module 200. The functional module 300 has functional connection elements on the lower side of the functional housing 301, which have voltage terminals and data terminals. The functional connection elements of the Figure 1 are not shown. The data terminals and voltage terminals of the functional connection elements of the functional module 300 can be connected to the basic data terminals 207 and the basic voltage terminals 205 of the basic connection elements 203 of the basic module 200, thereby establishing a data-technical and voltage-technical connection between the basic module 200 and the functional module 300. In addition, the functional connection elements of the functional module 300 include coupling openings, which can be coupled to the circulation openings 217 of the basic connection elements 203 of the basic module 200. By connecting the functional module 300 to the basic module 200 via the coupling of a functional connection element of the functional module 300 with one of the basic connection elements 203 of the basic module 200, the coupling of the circulation opening 217 of one of the basic connection elements 203 of the basic module 200 with the coupling opening of the functional connection element of the functional module 300 is realized. Thereby, a fluid-technical connection is established between the interior of the functional housing 301 of the functional module 300 and the circulation channel 215 of the basic module 200. In Figure 1 this connection between the functional module 300 and the basic module 200 is shown, wherein a fluid-technical connection is established between the interior of the functional housing 301 and the circulation channel 215 of the basic module 200.

[0162] A circulation loop 101 is established by a fluid-technical connection between the interior of the functional housing 301 of the functional module 300 and the circulation channel 215 of the basic module 200. The circulation loop includes the circulation channel 215 of the basic module 200 and the interior of the functional housing 301 of the functional module 300 connected to the basic module 200. Inside the circulation loop 101, an air flow can be realized in the Figure 1 circulation indicated by the arrows. The circulation of the air flow extends in a predetermined circulation direction within the circulation channel 215 and flows into the interior of the functional housing 301 through one of the coupling openings. The circulating air flow exits the functional housing through another coupling opening and re-enters the circulation channel 215 of the basic module 200.

[0163] The circulation of the air flow within the circulation loop 101 can be achieved, for example, by convection. Due to different temperatures within the functional housing 301 of the functional module 300 or the circulation channel 215 of the basic module 200, a pressure difference is generated. This pressure difference causes circulation within the air volume of the circulation loop 101 and, in connection therewith, forms a circulating air flow.

[0164] The functional module 300 further includes an electronic functional circuit arranged in the functional housing 301. The functional circuit is not shown in the Figure 1 figure. By means of the air flow circulating in the circulation loop 101, complete mixing of the air volume located inside the functional housing 301 of the functional module 300 can be achieved, thereby avoiding the formation of heat accumulation bubbles inside the functional housing 301.

[0165] Heat accumulation bubbles describe here regions of the air volume within the functional housing 301 that have an increased temperature due to local heating by components of the electronic functional circuit of the respective functional module 300. By homogenizing the air volume within the functional housing 301, these regions can be dispersed, thereby achieving a uniform temperature distribution within the air volume of the functional housing 301 and the associated cooling power.

[0166] In the Figure 1 figure showing the switchgear system 100, it is of an exemplary nature only and is not a detailed and dimensionally accurate image of the switchgear system 100 according to the present invention. In particular, different from the embodiment shown in the Figure 1 figure, a plurality of basic connection elements 203 can be constructed on the basic module 200. In addition, a plurality of functional modules 300 can be connected to the basic module 200. In addition, the circulation channel 215 can have a configuration different from that in the Figure 1The different shaped design solutions shown. For example, the circulation channel 215 may have a circular or oval shape. In addition, the arrangement structure of the basic voltage terminal 205 or the basic data terminal 207 and the circulation opening 217 on the corresponding basic connection element 203 may be different from that shown in Figure 1 the illustration shown.

[0167] In addition, Figure 1 shows a cutting plane A, which is used to illustrate other drawings.

[0168] Figure 2 shows a schematic diagram of another perspective of the switchgear system 100 according to another embodiment.

[0169] In Figure 2 , the basic module 200 includes two circulation channels 215 arranged side by side in the basic housing 201. According to the circulation loop 101 defined by the circulation channels 215, the air flow can circulate in each circulation channel 215.

[0170] Each circulation channel 215 is similar to the Figure 1 circulation channel structure in. In addition, compared with the embodiment in Figure 1 , the basic module 200 has two sets of basic connection elements 203, which have basic data terminals 207 and basic voltage terminals 205, data lines 211, voltage lines 209, and switching-on units 213, which are respectively constructed similar to the Figure 1 embodiment in. Each basic connection element 203 also has circulation openings 217, which are in fluid connection with the circulation channels 215.

[0171] In Figure 2 , Figure 2 the switchgear system 100 in has a functional module 300 according to another embodiment. In the Figure 2 embodiment, the functional module 300 is designed to be coupled to the basic module 200 via the two sets of basic connection elements 203. Therefore, the functional module 300 is designed to enter into fluid connection with the two side-by-side arranged circulation channels 215. As shown in Figure 2 , the circulated air flow can thus enter the functional housing 301 through the two circulation loops 101 respectively and is responsible for mixing the air volume in the functional housing 301.

[0172] Figure 3 shows a schematic top view of the basic module 200 according to one embodiment.

[0173] In Figure 3 is shown the basic module 200 of the switchgear system 100 according to another embodiment. Compared withFigure 1 Unlike the embodiment in [reference], the circulation channel 215 includes a first partial channel 219, a second partial channel 221, a third partial channel 223, and a fourth partial channel 225. The first partial channel 219 is configured in parallel with the second partial channel 221, and the third partial channel 223 is configured in parallel with the fourth partial channel 225.

[0174] In addition, each basic connection element 203 has a first circulation opening 227 that is in fluid-technological connection with the first partial channel 219 and a second circulation opening 229 that is in fluid-technological connection with the second partial channel 221. In addition, an adjustment mechanism 230 is provided on each circulation opening 217, and this adjustment mechanism is designed to adjust the air flow through the respective circulation opening 217. The adjustment mechanism 230 can be configured, for example, as a respective nozzle element.

[0175] Alternatively, the adjustment mechanism 230 can be configured such that the diameter of the respective circulation opening 217 is modified. The adjustment mechanism 230 enables the same air flow to flow through each circulation opening 217. Thereby, it can be achieved that when a plurality of functional modules 300 are arranged on the basic module 200 that is sequentially connected to the respective basic connection element 203, the air flow of the circulation circuit 101 flows into the respective functional housing 301 through the respective circulation opening 217 with the same intensity. In addition, the adjustment mechanism 230 can serve as a pressure compensation and is configured to ensure the same volume exchange or volume flow rate of the circulating air even in the case of different pressure differences.

[0176] Thereby, it is also achieved that, regardless of the positioning of the respective functional module 300 on the basic module 200 and regardless of the number of functional modules 300 positioned on the basic module 200, an air flow of the same intensity is supplied to each functional module 300 and, in connection therewith, the same cooling power is supplied.

[0177] Alternatively, the air flow for a specific functional module 300 can be individually adapted via the adjustment mechanism 230 such that a relatively strong air flow is provided for the functional module 300 with strong heat dissipation and a relatively weak air flow is provided for the functional module 300 with relatively small heat dissipation.

[0178] Figure 4 Shows another schematic top view of the basic module 200 according to another embodiment.

[0179] Unlike Figure 3 the embodiment in Figure 4The basic module 200 therein has two circulation channels 215, which are arranged side by side. In addition, the basic module 200 has two rows of basic connection elements 203 arranged side by side, and each row of basic connection elements has a basic voltage terminal 205, a basic data terminal 207, and a circulation opening 217.

[0180] As an alternative to the embodiment shown herein, the basic connection elements 203 can also be configured differently. For example, the basic connection elements 203 can each have a row of data terminals and ultra-low voltage terminals, and a row of low-voltage terminals. Alternatively, the basic connection elements 203 can have two rows of data terminals and ultra-low voltage terminals. Alternatively, the basic connection elements 203 can have a row of data terminals and ultra-low voltage terminals, and a row of data terminals and low-voltage terminals.

[0181] In each circulation channel 215, an air flow according to the circulation of the circulation loop 101 is shown. And Figure 1 or Figure 3 different from the embodiment in Figure 4 the basic module 200 therein also has four fan elements 218, which are respectively arranged in pairs in the two circulation channels 215. The fan elements 218 are configured to accelerate the air volume within the circulation channel 215 or within the circulation loop 101 and thus generate or drive the circulating air flow.

[0182] As an alternative to the embodiment shown in Figure 4 each circulation channel 215 can also be configured with only one fan element 218. Alternatively, the fan elements 218 can also be arranged within the functional housing 301 of the functional module 300, so that when the corresponding functional module 300 is connected to the basic module 200, the circulation of the air volume within the circulation loop 101 can be achieved by operating the fan elements 218 arranged in the corresponding functional housing 301.

[0183] Alternatively, the switchgear system 100 can also include a functional module 300 configured as a cooling module. The functional module 300 configured as a cooling module does not include a functional circuit, but can be configured with at least one fan element 218, and the fan element is arranged within the corresponding functional housing 301 of the functional module 300 configured as a cooling module.

[0184] The circulation direction of the circulating air flow is shown by an arrow in Figure 4 As an alternative to the circulation direction shown in Figure 4 any circulation of the air volume within the circulation loop 101 or within the circulation channel 215 can be achieved by correspondingly operating the fan elements 218.

[0185] In addition, in Figure 4 In the embodiment of Figure 4 , the basic module 200 includes two heat exchangers 236, which are respectively in a circulation channel 215. The heat exchangers 236 can cool the air volume circulating in the circulation loop 101 or the circulation channel 215 in such a way that the air volume outputs the heat stored in the air volume to the corresponding heat exchanger 236 when flowing past the corresponding heat exchanger 236. As an alternative to the embodiment shown in Figure 4 Any number of heat exchangers can be arranged within the circulation channel 215 of the basic module 200. Alternatively, the heat exchangers 236 can be arranged in one or more functional housings 301 of one or more functional modules 300, so that the cooling effect of the air volume located in the corresponding functional housing 301 can be achieved when flowing past the corresponding heat exchanger 236.

[0186] Alternatively, at least one heat exchanger 236 can also be arranged within the functional housing 301 of the functional module 300 designed as a cooling module.

[0187] Figure 5 Schematic diagram showing a perspective view of the switchgear system 300 according to an embodiment.

[0188] In Figure 5 In the embodiment of Figure 5 , the functional module 300 has additional cooling ribs 325 on one side of the functional housing 301, and the cooling ribs can achieve the cooling effect of the air volume located inside the functional housing 301. Through the additional cooling ribs 325, the heat radiated to the surrounding environment of the functional module 300 is increased by increasing the surface of the corresponding side of the functional housing 301.

[0189] In addition, in Figure 5 In the embodiment of Figure 5 , the functional module 300 has a plurality of functional connection elements 303 on the housing lower side 302 of the functional housing 301. Each functional connection element 303 has two coupling openings 309. Each coupling opening 309 has a surrounding coupling flange 311 that projects from the functional connection element 303.

[0190] Figure 6 Shows Figure 5 The schematic bottom view of the functional module 300 in

[0191] In Figure 6 Each functional connection element 303 is shown in Figure 5The arrangement structure on the lower side 302 of the functional housing 301 of the functional module 300 in []. Four functional connection elements 303 are arranged on the lower side 302 of the housing. These functional connection elements are arranged in pairs in sequence in two vertically oriented directions. The functional connection elements 303 are designed as rod-shaped here and correspond to the basic connection elements 203 shown in the basic module 200 in Figures 1 to 4 The structure of the basic connection elements 203 shown in []. Each functional connection element 303 may include a voltage terminal 305 and a data terminal 307, which are arranged side by side on the functional connection element 303 respectively. Alternatively, the occupancy of the functional connection elements 303 of the functional module 300 can be designed differently. For example, the individual functional connection elements 303 can remain unoccupied and thus do not include a data terminal 307 or a voltage terminal 305. Other functional connection elements 303 can each have only a data terminal 307 or only a voltage terminal 305. Figure 6 The arrangement structure of the terminals in the embodiment in [is only exemplary.

[0192] In addition, each functional connection element 303 includes two coupling openings 309, which are arranged at opposite ends of the functional connection element 303 respectively. Each coupling opening 309 has a coupling flange 311, which surrounds the coupling opening 309 and projects from the functional connection element 303. The two coupling openings 309 of each functional connection element 303 are respectively divided into a first coupling opening 321 and a second coupling opening 323. According to the embodiment of the basic module 200 in Figure 3 In [], the first coupling opening 321 can be coupled to the first circulation opening 227 and the second coupling opening 323 can be coupled to the second circulation opening 229.

[0193] Different from the embodiment shown in Figure 6 The functional module 300 can have any number of functional connection elements 303. In addition, the arrangement of the coupling openings 309 on the functional connection element 303 can be different from the arrangement shown in Figure 6 In [].

[0194] Figure 7 Shows Figure 5 A schematic internal view of the functional module 300 in [].

[0195] In Figure 7 Shown in Figure 5 Or Figure 6 The interior of the functional module 300 in []. The electronic functional circuit 313 arranged inside the functional housing 301 includes a plurality of components 329 of the electronic functional circuit 313. The components 329 shown in Figure 7 In [] or the shown electronic functional circuit 313 is only exemplary and can be different between functional modules according to the functions of the corresponding functional modules 300.

[0196] In Figure 7 In the embodiment, the functional module 300 further includes a guiding mechanism 315, which is designed to guide the air flow flowing into the interior of the functional housing 301 through at least one coupling opening 309 to a predetermined area inside the functional housing 301. In Figure 7 In the embodiment, on the one hand, the guiding mechanism 315 is configured as a guiding fan element 317, which can arbitrarily guide the air flow through the interior of the functional housing 301. A predetermined area within the functional housing 301 may be, for example, an area with particularly high heat dissipation of a specific component 329 of the electronic functional circuit 313.

[0197] Alternatively, the area may include the entire interior of the functional housing 301 or most of the electronic functional circuit 313, so that the air flow guided by the guiding mechanism 315 or the guiding fan element 317 circulates most of the functional circuit 313. In Figure 7 In the embodiment, the guiding mechanism 315 is also configured as a guiding channel 319, which extends from the coupling opening 309 to the interior of the functional housing 301 and is configured to guide the air flow flowing from the coupling opening 309 into the functional housing 301 to a predetermined area inside the functional housing 301.

[0198] As an alternative to the embodiment shown in Figure 7 , any guiding fan element 317 can be arranged at different positions within the functional housing 301. In addition, a plurality of guiding channels 319 with different shapes can be arranged within the functional housing 301.

[0199] Alternatively, the guiding mechanism 315 can be configured as a guiding nozzle 316, which is arranged on the corresponding coupling opening 309.

[0200] The guiding fan element 317 and / or the guiding channel 319 and / or the guiding nozzle 316 can be made of plastic, metal or a suitable composite material.

[0201] Figure 8 Shows a schematic cross-sectional view along the sectional axis A of the switchgear system 200 in Figure 2 .

[0202] In Figure 8 shows the path of the air flow flowing through the circulation loop 101 through the interior of the basic housing 201 of the basic module 200 or through the interior of the functional housing 301 of the functional module 300 of the switchgear system 100, which has a basic module 200 according to the embodiment in Figure 4 and a functional module 300 according to the embodiment in Figures 5 to 7 .

[0203] This sectional view corresponds to the cutting plane A shown in Figure 2 .

[0204] In Figure 8 , similar to the embodiment in Figure 4 , the basic module 200 includes two loop channels 215 arranged side by side. Each of the two loop channels 215 includes a first partial channel 219, a second partial channel 221 arranged in parallel therewith, a third partial channel 223 and a fourth partial channel 225 arranged in parallel therewith. The third partial channel 223 is not shown in Figure 8 due to the sectional view.

[0205] In addition, the basic module 200 includes a plurality of basic connection elements 203, which are not shown in Figure 8 due to the sectional view. Each of the basic connection elements 203 includes a first loop opening 227 and a second loop opening 229. The first loop opening 227 is fluid-technologically connected to the first partial channel 219. The second loop opening 229 is fluid-technologically connected to the second partial channel 221.

[0206] Similar to the embodiment in Figures 5 to 7 , the shown functional module 300 includes four functional connection elements 303, which are not shown in Figure 8 due to the sectional view. Each of the functional connection elements 303 includes a first coupling opening 321 and a second coupling opening 323. Each coupling opening 309 includes a coupling flange 311 that projects from the functional connection element 303. In Figure 8 , the coupling flange 311 of the corresponding coupling opening 309 is inserted into the corresponding loop opening 217 of the basic module 200. Thus, in Figure 8 , the first coupling opening 321 is connected to the first loop opening 227, and the second coupling opening 323 is connected to the second loop opening 229.

[0207] In addition, a guiding nozzle 316 is constructed on the first coupling opening 321, and the guiding nozzle guides the air flow flowing into the interior of the functional housing 301 through the first coupling opening 321 to a predetermined area within the functional housing 301.

[0208] Thereby, a fluid-technological connection is established between the loop channel 215 and the interior of the functional housing 301 of the functional module 300.

[0209] In Figure 8In the embodiment, the circulation of the air flow extends along the circulation loop 101 so that the flow direction of the air flow in the second part channel 221 of the circulation channel 215 points to Figure 8 The paper plane is shown by the arrow shown in the second partial channel 221. In the fourth partial channel 225, the flow direction extends from right to left according to the arrow shown. In the first partial channel 219, the flow direction extends from right to left. Figure 8 21. The first partial channel 219 is directed outward in the plane of the paper. From the first partial channel 219, the circulating air flow extends through the first circulation opening 227 or the first coupling opening 321 coupled to the first circulation opening to the interior of the functional housing 301 of the functional module 300. Within the functional module 300, the circulating air flow extends along the electronic functional circuit 313 arranged in the functional housing 301 and leaves the functional housing 301 through the second coupling opening 323 and enters the second partial channel 221 through the second circulation opening 229 coupled to the second coupling opening. A circulating air flow is thus achieved, which extends through the circulation channel 215 of the basic module 200 and through the interior of the functional housing 301 of the functional module 300.

[0210] The course of the circulating air flow within the functional housing 301 is Figure 8 It is only shown as an example. Figure 8 As an alternative to the course shown in the figure, the course within the functional housing 301 can be extended differently by any object within the functional housing 301, for example, a component 329 of the electronic functional circuit 313 or by another guide mechanism 315. In particular, such an air flow can also be that the air flow is exchanged between the two circulation channels and enters the functional housing 301, for example, via a first coupling opening 321 of one of the circulation channels and flows out of the functional housing 301 again through a second coupling opening 323 of the other circulation channel.

[0211] Figure 9 According to another embodiment, Figure 2 Schematic sectional view of the sectional axis A of the switch cabinet system 200 in FIG.

[0212] with Figure 2 The implementation shown in Figure 9 Two small functional modules 300 (based on Figure 1 ) are respectively connected to only one of the two circulation channels 215 arranged side by side.

[0213] exist Figure 9 The course of the circulating air flow within the circulation circuit 101 for two functional modules 300 is shown in FIG. Figure 9 The functional module 300 shown in FIG. 1 is different from that in FIG. Figures 5 to 8The functional modules shown therein are such that there are at most only two functionally connecting elements 303 arranged side by side. Thus, in Figure 9 each functional module 300 is only connected to one of the two side-by-side circulating channels 215 of the basic module 200. Thus, each functional module 300 connected to the basic module 200 is only connected to and fluid-technologically connected to the circulating channel 215 of the basic module 200. Conversely, the flow direction of the air flow circulating within the circulation loop 101 is similar to that in Figure 8 the described embodiment.

[0214] Figure 10 shows Figure 5 another schematic internal view of the functional module 300 in

[0215] In Figure 10 the interior of the functional housing 301 of the functional module 300 according to the embodiment in Figures 5 to 8 is shown. In addition, the possible flow direction of the circulating air flow within the functional housing 301 is shown. The corresponding basic module 200 is not shown in Figure 10 such that the flow direction of the circulating air flow within the circulating channel 215 of the corresponding basic module 200 is only schematically shown.

[0216] In Figure 10 it is shown how the circulating air flow enters the interior of the functional housing 301 through the coupling opening 309 of the functionally connecting element 303 of the functional module 300 and flows along the electronic functional circuit 313 arranged inside the functional housing 301. Here, the possible heat accumulation bubbles occurring in the regions of the individual components 329 of the electronic functional circuit 313 can be agitated and dispersed. The circulating air flow entering the interior of the functional housing 301 through the coupling opening 309 of the functionally connecting element 303 is discharged from the functional housing 301 again through the coupling opening 309 of the same functionally connecting element 303. This is similar to the process described for Figure 8 the process described.

[0217] Since the coupling opening 309 of the functionally connecting element 303 is connected to the same circulating channel 215, for example, to the first partial channel 219 and the second partial channel 221, and due to the pressure difference existing in the circulation of the air flow, the air flow only enters the interior of the functional housing 301 through the coupling opening 309 of the functionally connecting element 303 respectively.

[0218] Different from the flow direction of the air flow circulating within the functional housing 301 shown in Figure 10 as well as in Figure 8 multiple circulating air flows within the functional housing 301 can be mixed and thus flow out of the functional housing 301 again through different second coupling openings 323. As already inFigure 8 As mentioned in, the flow direction of the air flow circulating along the circulation loop 101 is only schematically shown, and the actual flow direction may be different from that shown in Figures 8 to 10 .

[0219] Figure 11 Schematic diagram showing a perspective view of the heating element 231 according to an embodiment.

[0220] Figure 11 The heating element 231 is shown, which can be used to heat the air volume within the circulation loop 101. Figure 11 In the heating element 231 in the embodiment of, the heating element housing 235 is included, and the heating wire 233 is arranged in the heating element housing. In Figure 11 The heating element 231 shown in operates according to the working principle of a hair dryer, in such a way that the air to be heated moves along the heating wire 233 through the heating element housing 235 and is thereby heated. As an alternative to the embodiment shown in Figure 11 , the heating element 231 can have different design solutions.

[0221] Figure 12 Shows Figure 11 A schematic diagram of a perspective view of the heating element 231 in, wherein the heating element 231 is integrated into the basic module 200.

[0222] In Figure 12 , the heating element 231 is integrated into the third partial channel 223 of the circulation channel 215 of the basic module 200. For this purpose, the fourth housing side 208 of the basic housing 201 is shown in Figure 12 . In addition, for the two side-by-side arranged third partial channels 223 of the two side-by-side arranged circulation channels 215, for the purpose of illustration, only the components of the third partial channel 223 are shown, and the circulation channels are constructed according to the embodiments in Figure 4 or Figure 7 and Figure 8 . According to the embodiment in Figure 4 , in addition to the heating element 231 integrated into the third partial channel 223, a ventilator element 218 is provided in each third partial channel 223. Therefore, the air volume located in the circulation channel 215 can be accelerated by the ventilator element 218 and be driven to circulate within the circulation channel 215. Therefore, the air flow driven to circulate flows along the heating wire 233 of the heating element 231, thereby realizing the heating of the circulating air flow and the air volume located in the circulation channel 215 or the circulation loop 101.

[0223] Figure 13 Shows Figure 11Schematic diagram of another perspective of the heating element 231 therein, where the heating element 231 is integrated into the basic module 200.

[0224] In Figure 13 shown in Figure 12 Completion of the third partial channel 223 of the circulation channel 215 only partially shown in. The fan device element 218 and the heating element 231 are fully integrated into the corresponding third partial channel 223.

[0225] Figure 14 Schematic diagram showing another perspective of the switchgear system 100 according to another embodiment.

[0226] In Figure 14 shown is an embodiment of the switchgear system 100 in which four functional modules 300 are connected to the basic module 200. The basic module 200 has cooling ribs 237 on the second housing side 204 of the basic housing 201. Cooling of the basic housing 201 of the basic module 200 can be achieved through the cooling ribs 237. In addition, three of the functional modules 300 have additional cooling ribs 325 on the housing surface 326 of the functional housing 301. Cooling of the functional module 300 can be achieved through the additional cooling ribs 325 by increasing the corresponding area of the housing surface 326 due to the construction of the additional cooling ribs 325, thereby increasing the heat radiated from the functional housing 301 of the functional module 300 to the surrounding environment of the switchgear system 100.

[0227] Figure 15 Schematic diagram showing another perspective of the switchgear system 100 according to another embodiment.

[0228] In Figure 15 In the embodiment shown in, an external fan element 243 is also arranged on the third housing side 206 of the basic housing 201 of the basic module 200, which is configured to guide cooling air along the cooling ribs 237 of the basic module 200. In addition, the functional module 300 has an additional external fan element 327 on another housing surface 328, and the fan element is designed to guide cooling air along the additional cooling ribs 325 of the corresponding functional module 300.

[0229] As an alternative to the embodiment shown in Figure 15 Any number of external fan elements 243 can be arranged on the basic module 200. In addition, any number of additional external fan elements 327 can be arranged on the functional module 300.

[0230] Figure 16 Schematic diagram showing another perspective of the switchgear system 100 according to another embodiment.

[0231] In Figure 16 the embodiment, the basic module 200 has a water cooling device 239 on the second housing side 204 instead of the cooling rib 237. Cooling water can be introduced into and discharged from the water cooling device 239 through the corresponding water supply element 241, thereby achieving the cooling effect of the basic housing 201 of the basic module 200 and, in connection therewith, the cooling effect of the air volume located in the basic housing 201.

[0232] According to another embodiment, the functional housing 301 of the functional module 300 or the functional housing 301 of the functional module 300 and / or the basic housing 201 of the basic module 200 is made of a material having a high thermal conductivity, such as higher than 10 W / mK. For example, the functional housing 301 or the basic housing 201 can be made of metal, especially steel, aluminum or a preferred metal alloy having a correspondingly high thermal conductivity. According to one embodiment, the functional housing 301 of the functional module 300 or the basic housing 201 of the basic module 200 can be coated with a corresponding coating having a high thermal conductivity, especially higher than 10 W / mK. According to one embodiment, heat pipes can also be constructed in the basic module 200, by means of which the heat transfer from the functional module 300 towards the radiator connected to the basic module 200 can be achieved within the basic module 200. Thereby, the cooling effect of the functional module 300 can be achieved.

[0233] According to another embodiment, the basic module 200 can have a diaphragm designed to achieve pressure balance between the air volume located in the basic housing 201 and the ambient air surrounding the switchgear system 100.

[0234] According to another embodiment, by means of the mechanism described above, passive or closed active cooling can be achieved at an ambient temperature up to 50°C, with up to 100% of the cooling power of the functional module 300 or the basic module 200 of the switchgear system 100.

Claims

1. A switchgear system (100) having a basic module (200) and at least one functional module (300), wherein, The basic module (200) has a basic housing (201) with a first housing side (202) and a second housing side (204), wherein a plurality of basic connection elements (203) with basic voltage terminals (205) and basic data terminals (207) are arranged on the first housing side, wherein at least one data line (211) configured as a data bus is arranged in the basic housing (201), the data line having a plurality of switching units (213) configured as slaves of the data bus, which switching units are connected via the data line (211) to the basic data terminals (207) of the basic connection elements (203), and at least one voltage line (209) is arranged, which voltage line is connected to the basic voltage terminals (205) of the basic connection elements (203), wherein the functional module (300) has a functional housing (301) with a housing underside (302), wherein functional connection elements (303) with voltage terminals (305) and data terminals (307) are arranged on the housing underside (302), wherein at least one electronic functional circuit (313) is arranged on the functional housing (301), which electronic functional circuit is connected to the voltage terminals and data terminals of the functional connection elements (303), wherein by coupling the functional connection elements (303) to one of the basic connection elements (203), the functional module (300) can be connected to the basic module (200) and the connection of the voltage terminals (305) and data terminals (307) of the functional connection elements (303) to the basic voltage terminals (205) and basic data terminals (207) of the basic module (200) can be realized, wherein a circulation channel (215) is arranged in the basic housing (201), wherein the circulation channel (215) has a circular, elliptical or rectangular course, wherein an air flow can circulate in the circulation channel (215), wherein each basic connection element (203) has a circulation opening (217), which circulation openings are fluid-technically connected to the circulation channel (215), wherein the functional connection elements (303) have coupling openings, which coupling openings are fluid-technically connected to the interior of the functional housing (301), wherein the coupling openings (309) can be coupled to the circulation openings (217), wherein in the coupling of the coupling openings (309) to the circulation openings (217), a fluid-technical connection exists between the circulation channel (215) and the interior of the functional housing (301), and a fluid-technically closed circulation loop (101) including the circulation channel (215) and the interior of the functional housing (301) is formed, and by means of a pressure difference within the functional housing (301) of the functional module (300) and / or the circulation channel (215) of the basic module (200), an air flow can circulate in the circulation loop,In such a way that the air flow enters the interior of the functional housing (301) from the circulation channel (215) via a coupling opening (309) and flows again from the interior of the functional housing (301) into the circulation channel (215) via a further coupling opening (309).

2. The switchgear system (100) according to claim 1 further includes a ventilator element (218), wherein, The fan element (218) is integrated into the circulation circuit (101) of fluid technology, and wherein the fan element (218) is configured to accelerate the circulating air flow within the circulation circuit (101).

3. The switchgear system (100) according to claim 2, wherein, The fan element (218) is arranged in the functional housing (301) of the functional module (300) and / or in the circulation channel (215) of the basic module (200).

4. The switchgear system (100) according to any one of the preceding claims, wherein, A regulating mechanism (230) is arranged at the circulation opening (217), wherein the regulating mechanism (230) is configured to regulate the volume of the air flow passing through the circulation opening (217).

5. The switchgear system (100) according to claim 1, wherein, Each coupling opening (309) has a coupling flange (311) respectively, wherein the coupling flange (311) surrounds the coupling opening (309) and projects from the functional connecting element (303), wherein the coupling flange (311) can be inserted into the circulation opening (217) and enables coupling between the coupling opening (309) and the circulation opening (217), and wherein a fluid-tight connection between the functional module (300) and the basic module (200) is achieved through the coupling between the coupling opening (309) and the circulation opening (217).

6. The switchgear system (100) according to claim 1, wherein, A sealing mechanism is arranged on the circulation opening (217), and wherein the sealing mechanism is configured to fluid-tightly close the circulation opening (217) of the basic connecting element (203) when no functional module (300) is connected to the basic connecting element.

7. The switchgear system (100) according to claim 1, wherein, A guiding mechanism (315) is arranged inside the functional housing (301) of the functional module (300), wherein the guiding mechanism (315) is configured to guide the air flow flowing into the interior of the functional housing (301) through the coupling opening (309) to a predetermined area inside the functional housing (301), in which area at least one component (329) of the electronic functional circuit (313) is arranged.

8. The switchgear system (100) according to claim 7, wherein, The guiding mechanism (315) includes a guiding nozzle (316) arranged on the coupling opening (309), and the guiding nozzle is suitable for guiding the air flow to a predetermined area inside the functional housing (301).

9. The switchgear system (100) according to claim 7 or 8, wherein, The guiding mechanism (315) includes a guiding fan element (317) arranged inside the functional housing (301).

10. The switchgear system (100) according to claim 7 or 8, wherein, The guiding mechanism (315) includes a guiding channel (319), wherein the guiding channel has a fluid-technical connection with at least one of the coupling openings (309), and wherein the guiding channel is configured to guide the air flow to a predetermined area inside the functional housing (301).

11. The switchgear system (100) according to claim 1, wherein, The circulation channel (215) is in thermal contact with at least one inner wall of the basic housing (301) of the basic module (200).

12. The switchgear system (100) according to claim 2, wherein, The circulation channel (215) includes a first partial channel (219), a second partial channel (221), a third partial channel (223), and a fourth partial channel (225), wherein the first partial channel (219) and the second partial channel (221) are arranged parallel to each other, wherein the third partial channel (223) and the fourth partial channel (225) are arranged parallel to each other, wherein each basic connection element (203) has a first circulation opening (227) and a second circulation opening (229), wherein the first circulation opening (227) is fluid-technologically connected to the first partial channel (219), and the second circulation opening (229) is fluid-technologically connected to the second partial channel (221), wherein the functional connection element (303) has a first coupling opening (321) and a second coupling opening (323), wherein the first coupling opening (321) and the second coupling opening (323) are respectively fluid-technologically connected to the interior of the functional housing (301), wherein the first coupling opening (321) can be coupled to the first circulation opening (227) and the second coupling opening (323) can be coupled to the second circulation opening (229), and wherein a pressure difference can be achieved by the temperature difference within the functional housing (301) or within the circulation channel (215) between the first partial channel (219) and the second partial channel (221) or by the circulating air flow generated by the ventilator element (218).

13. The switchgear system (100) according to claim 12, wherein, The first coupling opening (321) and the second coupling opening (323) are located on two opposite outermost ends of the functional connection element (303), and wherein the data terminal (307) and the voltage terminal (305) on the functional connection element (303) are located between the first coupling opening (321) and the second coupling opening (323).

14. The switchgear system (100) according to claim 1, further comprising a heating element (231), wherein, The heating element (231) is integrated into the fluid-technological circulation circuit (101), wherein the heating element (231) is designed to heat the air volume surrounded by the circulation circuit (101), and wherein the heating element (231) is arranged within the functional housing (301) of the functional module and / or within the circulation channel (215).

15. The switchgear system (100) according to claim 1 further includes a heat exchanger (235), wherein, The heat exchanger (235) is integrated into the circulation circuit (101), wherein the heat exchanger (235) is designed to cool the air flow within the circulation circuit (101), wherein the heat exchanger (235) is an air-air heat exchanger or an air-water heat exchanger, and wherein the heat exchanger (235) is arranged inside the functional housing (301) of the functional module (300) and / or inside the basic housing (301) of the basic module (200).

16. The switchgear system (100) according to claim 1, wherein, Cooling ribs (237) and / or a water cooling device (239) are configured on a second housing side (204) of the basic housing of the basic module (200), and / or wherein, Additional cooling ribs (325) are configured on a housing surface (326) of the functional module (300).

17. The switchgear system (100) according to claim 16, wherein, An external fan element (243) is configured on a third housing surface (206) of the basic module (200), wherein the external fan element (243) is designed to guide cooling air along the cooling ribs (237), and / or wherein, another external fan element (327) is configured on another housing surface (326) of the functional module (300), wherein the additional external fan element (327) is designed to guide cooling air along the additional cooling ribs (325).

18. The switchgear system (100) according to claim 1, wherein, An internal fan element is arranged inside the functional housing (301), wherein the internal fan element is designed to guide cooling air along at least one inner wall of the functional housing (301), and / or wherein, another internal fan element is arranged inside the basic housing (201), wherein the additional internal fan element is designed to guide cooling air along at least one inner wall of the basic housing (201).

19. The switchgear system (100) according to claim 1, wherein, Components (329) of the electronic functional circuit (313) of the functional module (300) have thermal contact with the inner wall of the housing of the functional housing (301).

20. The switchgear system (100) according to claim 1, wherein, The functional housing (301) and / or the basic housing (201) are made of a material having a thermal conductivity of at least 10 W / mK.

21. The switchgear system (100) according to claim 1, wherein, The functional housing (301) and / or the basic housing (201) are coated with a coating having a thermal conductivity of at least 10 W / mK.

22. A basic module (200) for a switchgear system (100) according to any one of the preceding claims 1 to 21, wherein, The basic module (200) has a basic housing (201) with a first housing side (202) and a second housing side (204), wherein a plurality of basic connection elements (203) with basic voltage terminals (205) and basic data terminals (207) are arranged on the first housing side (202), wherein at least one data line (211) with a plurality of switching units (213) connected to the basic data terminals (207) of the basic connection elements (203) is arranged in the basic housing (201), and at least one voltage line (209) is arranged, which is connected to the basic voltage terminals (205) of the basic connection elements (203), wherein a circulation channel (215) is arranged in the basic housing (201), wherein the circulation channel (215) has a circular, elliptical or rectangular course, wherein an air flow can circulate in the circulation channel (215), wherein each basic connection element (203) has a circulation opening (217), wherein the circulation opening (217) is fluid-technically connected to the circulation channel (215), wherein the circulation opening (217) can be coupled to a coupling opening (309) of a functional module (300) of the switchgear system (100), and wherein, in the coupling of the circulation opening (217) to the coupling opening (309) of the functional module (300), a fluid-technical connection between the circulation channel (215) and the interior of the functional housing (301) can be realized, and a fluid-technically closed circulation loop (101) including the circulation channel (215) and the interior of the functional housing (301) can be formed, and, by means of a pressure difference within the functional housing (301) of the functional module (300) and / or the circulation channel (215) of the basic module (200), an air flow can circulate in the circulation loop in such a way that the air flow enters from the circulation channel (215) into the interior of the functional housing (301) via one coupling opening (309) and flows again from the interior of the functional housing (301) into the circulation channel (215) via another coupling opening (309).

23. A functional module (300) for a switchgear system (100) according to any one of the preceding claims 1 to 21, wherein, The functional module (300) has a functional housing (301) with a housing underside (302), wherein a functional connection element (303) with a voltage terminal (305) and a data terminal (307) is arranged on the housing underside (302), wherein at least one electronic functional circuit (313) is arranged in the functional housing (301), and the electronic functional circuit is connected to the voltage terminal (305) and the data terminal (307) of the functional connection element (303). By coupling the functional connection element (303) of the switchgear system (100) with the basic connection element (203) of the basic module (200), the functional module (300) can be connected to the basic module (200), and the voltage terminal (305) and the data terminal (307) of the functional connection element (303) can be connected to the basic voltage terminal (205) and the basic data terminal (207) of the basic module (200). The functional connection element (303) has a coupling opening (309), wherein the coupling opening (309) is connected to the interior of the functional housing (301) in fluid technology. The coupling opening (309) can be coupled to the circulation opening (217) of the basic module (200) of the switchgear system, and in the coupling of the coupling opening (309) and the circulation opening (217), a fluid-technological connection between the circulation channel (215) of the basic module (200) and the interior of the functional housing (301) can be realized, and a fluid-technologically closed circulation loop (101) including the circulation channel (215) and the interior of the functional housing (301) can be formed, and an air flow can circulate in the circulation loop in such a way that the air flow enters the interior of the functional housing (301) from the circulation channel (215) via one coupling opening (309) and flows back into the circulation channel (215) from the interior of the functional housing (301) via another coupling opening (309).

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