Modular system and modular electrical control device

Abstract

The invention relates to a modular system (1) for a modular electrical control device (100), comprising a first system module (2) having a first housing unit (3) and a first electrical functional unit (4), and a second system module (5) having a second housing unit (6) and a second electrical functional unit (7), the first system module (2) and the second system module (5) have complementary connecting devices (8) for fixing (B) the first system module (2) and the second system module (5) to each other and for electrically connecting (E) the first electrical functional unit (4) and the second electrical functional unit (7) to each other, the first system module (2) and the second system module (5) can be mounted to each other by means of their complementary connection means (8) in order to form a modular electrical control device (100) in the mounted state, the first housing unit (3) and the second housing unit (6) together delimit a housing interior (10) of the modular electrical control device (100) in a fluid-tight, in particular fluid-tight manner, and the first electrical functional unit (4) and the second electrical functional unit (7) and the complementary connecting device (8) are arranged in the housing interior (10).

Description

Technical Field

[0001] The invention relates to a modular system for a modular electric control device and the modular electric control device. Background Art

[0002] EP 3 749 075 A1 discloses an electrical control device having a first housing unit and a second housing unit mounted on one another. Summary of the Invention

[0003] The object of the present invention is to provide a modular system for modular electrical control devices and such a modular electrical control device, which have improved properties. In particular, they should enable particularly fast and fail-safe production of particularly compact modular electrical control devices.

[0004] This object is achieved by the subject matter of the independent patent claims. Preferred embodiments are the subject matter of the dependent patent claims.

[0005] The modular system according to the present invention is provided for modular electrical control devices. The modular system comprises a first system module. The first system module comprises a first housing unit and a first electrical functional unit. The modular system also comprises a second system module, which comprises a second housing unit and a second electrical functional unit. The first and second system modules each have complementary connecting devices. Thus, each system module comprises at least one connecting device, wherein at least one connecting device of one system module is designed, particularly shaped, and / or arranged to complement at least one connecting device of the other system module. These complementary connecting devices serve to secure the first and second system modules to each other. Furthermore, these complementary connecting devices serve to electrically connect the first and second electrical functional units to each other. Thus, these complementary connecting devices have a dual function. The two system modules can be mounted together using their complementary connecting devices to form a modular electrical control device in the assembled state. In other words, a modular electrical control device can be produced by mounting the two system modules of the modular system together. In the assembled state, the first and second housing units together define the housing interior of the modular electrical control device in a fluid-tight manner. In this context, "fluid-tight" may mean that the interior of the housing is so sealed relative to the external environment surrounding the modular electrical control device that a fluid transfer between the external environment and the interior of the housing is avoided at least to a large extent. In particular, in the installed state, the interior of the housing is delimited by the two housing units in a liquid-tight and / or air-tight and / or dust-tight manner. In the installed state, the first electrical functional unit and the second electrical functional unit as well as the complementary connecting means are arranged in the interior of the housing. The two electrical functional units and the complementary connecting means can thus be protected from environmental influences by the housing units in the installed state. The system modules can be pre-installed in such a way that they can be connected together in the pre-installed state to produce a modular electrical control device. In this way, modular electrical control devices can advantageously be produced particularly quickly and in a fail-safe manner. In addition, modular electrical control devices of particularly compact construction can be achieved by the modular system.

[0006] In one embodiment of the present invention, the second housing unit is constructed in two parts. The first housing unit can be constructed in one part. The two-part second housing unit includes a first housing part and a cover-shaped second housing part. The first housing part can be installed between the second housing part and the first housing unit. In other words, the first housing part can form an intermediate part that, in the installed state, is disposed between the second housing part and the first housing unit. The first housing part can be installed on the first housing unit independently of the second housing part. The first housing part can carry or contain the first electrical functional unit and / or the connection device of the first system module. In particular, when the first housing part is installed on the first housing unit, the first electrical functional unit and / or the connection device of the first system module can be pre-installed on the first housing part, especially after the second housing part has been removed. The first housing part preferably has at least one installation opening. In the installed state, the second housing part can cover the installation opening of the first housing part. In particular, the installation opening can be covered by the second housing part on the side of the first housing part facing away from the first housing unit. In other words, the installation opening can be covered by the second housing part facing away from the first housing unit. The second housing component can be removed from the first housing component, in particular to expose the mounting opening. When the second housing component is removed from the mounting opening, the housing interior is accessible from the outside through the mounting opening. In particular, complementary connecting means arranged in the housing interior are accessible from the outside through the mounting opening when the second housing component is removed from the mounting opening. In this way, the two system modules can be connected to each other particularly easily via the connecting means.

[0007] In a further embodiment of the present invention, the first housing unit has at least one positioning aid facing the housing interior. This positioning aid of the first housing unit is used to align the first electrical functional unit relative to the first housing unit. Alternatively or additionally, the second housing unit has at least one positioning aid facing the housing interior. This positioning aid of the second housing unit is used to align the second electrical functional unit relative to the second housing unit. Such positioning aids can improve the manufacture of modular electrical control devices based on this modular system by simplifying the positioning of electrical functional units relative to the respective housing units.

[0008] In a further embodiment of the present invention, the first housing unit and the second housing unit respectively have positioning sections, which are used to align the first housing unit and the second housing unit relative to each other. The positioning section of the second housing unit can be arranged on the first housing component of the second housing unit. The positioning section of the first housing unit is constructed and arranged complementary to the positioning section of the second housing unit. In particular, the positioning section of the housing unit is arranged on the housing flange of the housing unit. Each housing unit can have such a housing flange, which is particularly configured to be circumferential. The positioning section advantageously enables the manufacture of a modular electrical control device based on this modular system to be further simplified, because the positioning workload for mounting the housing units to each other can be reduced by the positioning section.

[0009] The first and second housing parts of the second housing unit advantageously each have positioning means for reliable, in particular reproducible, positioning of the first and second housing parts relative to one another. The positioning means of the two housing parts can be designed to complement one another. These positioning means can be designed in the same way as the positioning sections of the first and second housing units.

[0010] In a further embodiment of the invention, the complementary connecting means form a plug connection and / or a screw connection in the installed state. Such a plug connection has the advantage of a short installation time. The implementation using a screw connection has proven to be particularly robust.

[0011] In a further embodiment of the present invention, the first system module and the second system module have complementary coupling devices. In this case, in the installed state, these complementary coupling devices are coupled to each other in a fluid-conducting manner so that they fluid-conductingly connect the fluid path of the first system module to the fluid channel of the second system module while being sealed relative to the interior of the housing. Conversely, the second system module can have this fluid path and the first system module can have this fluid channel, which, in the installed state, are fluid-conductingly connected to each other via complementary coupling devices while being sealed relative to the interior of the housing. A fluid, in particular a gas and / or a liquid, can flow through the fluid path and the fluid channel. When the fluid path and the fluid channel are flowed through, the fluid can absorb heat from the heat source of the modular electrical control device and carry the absorbed heat away from the heat source.

[0012] In a further embodiment of the present invention, at least one of the system modules—namely, the first system module and / or the second system module—has a heat exchanger having a fluid path through which a fluid, particularly a liquid and / or a gas, can flow. In this case, in the installed state, the fluid path is separated from the interior of the housing of the modular control device in a fluid-tight, particularly air-tight and / or liquid-tight manner. The heat exchanger is preferably thermally coupled to the external environment of the modular electrical control device, so that when a fluid flows through the fluid path, heat can be transferred between the fluid and the environment via the heat exchanger. In particular, heat carried by the fluid can be released to the environment via the heat exchanger. In this case, the environment can form a heat sink.

[0013] In a further embodiment of the present invention, at least one of the system modules—namely, the first system module and / or the second system module—has a cooling pipe that extends at least partially along an electrical functional unit of the system module. The cooling pipe defines a fluid channel through which a fluid can flow. In the installed state, the fluid channel is fluidically connected to the fluid path via complementary coupling devices of the system module, while being sealed relative to the housing interior. The electrical functional unit along which the cooling pipe extends at least partially is preferably at least partially thermally coupled to the cooling pipe. In this case, the electrical functional unit, particularly in the region where it is thermally coupled to the cooling pipe, can form a heat source from which heat can be absorbed and removed by the fluid flowing through the cooling pipe.

[0014] In a further embodiment of the present invention, the first electrical functional unit and the second electrical functional unit each have a circuit board. Each of these circuit boards has an assembly side with electrical components of the corresponding electrical functional unit and a soldering side opposite the assembly side. Such electrical components can be power semiconductors, relays, contactors, active or passive electronic components, plug connectors, or filter components. In the installed state, these circuit boards, with their soldering sides facing each other, define an intermediate space of the modular electrical control device. The fixing of the first system module and the second system module to each other and the electrical connection between the first electrical functional unit and the second electrical functional unit are formed in the installed state by complementary connecting devices passing through this intermediate space. In this way, a modular electrical control device with a particularly compact structure can be produced using this modular system. In particular, in the installed state, the complementary coupling devices of the first system module and the second system module can be coupled to each other through this intermediate space.

[0015] In a further embodiment of the present invention, the first housing unit and the second housing unit are fixed to one another in the assembled state. In particular, in the assembled state, the first housing unit and the second housing unit are fixed to one another via screwed housing connections of the modular system, wherein the screwed housing connections are arranged on the housing flanges of the first housing unit and the second housing unit.

[0016] In a further embodiment of the present invention, the modular system includes an electromagnetically effective shielding device, which, in the installed state, is arranged between the first and second electrical functional units. In particular, the electromagnetically effective shielding device is arranged in the intermediate space of the modular control device. In the installed state, the shielding device is electrically and mechanically connected to at least one of the housing units. This shielding device advantageously counteracts electromagnetic interference between the electrical functional units.

[0017] The modular electrical control device according to the present invention comprises a first system module and a second system module of the modular system according to the present invention as described above. In this modular electrical control device, the first system module and the second system module are mounted to one another. The first and second system modules are mounted to one another such that the first housing unit and the second housing unit jointly delimit the housing interior of the modular electrical control device in a fluid-tight manner, in particular, in a liquid-tight and / or air-tight and / or dust-tight manner. Furthermore, in the mounted state, the first and second electrical functional units, as well as the complementary connecting devices, are arranged in the housing interior. The advantages of the modular system according to the present invention described above also apply to the modular electrical control device according to the present invention based on this modular system.

[0018] Further advantages and features of the present invention are derived from the claims and the following description of preferred embodiments of the present invention in conjunction with the accompanying drawings. In this context, the same reference numerals refer to identical, similar or functionally identical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] It is understood that the features mentioned above and the features to be explained below can be used not only in the respectively indicated combination but also in other combinations or alone without departing from the scope of the present invention.

[0020] Figure 1 An embodiment of a modular electrical control device according to the invention based on an embodiment of the modular system according to the invention is shown in a schematic sectional view,

[0021] Figure 2 A further embodiment of a modular electrical control device based on a further embodiment of a modular system is shown in a schematic sectional view. DETAILED DESCRIPTION

[0022] The modular system 1 according to the present invention is provided for a modular electrical control device 100. The modular electrical control device 100 can be manufactured by assembling the system modules 2, 5 of the modular system 1 together.

[0023] The modular electrical control device 100 can be configured for use in a vehicle, such as a motor vehicle. Such a motor vehicle can be a commercial vehicle. The modular electrical control device 100 can include a power electronics assembly 20 designed for use in such a vehicle. In particular, when the modular electrical control device 100 is used in such a vehicle, special requirements are placed on the vibration resistance of the modular electrical control device 100 and the protection level of the power electronics assembly 20. For example, the modular electrical control device 100 should meet the IP6K9K protection level according to the ISO 20653 standard. The modular electrical control device 100 can include a high-performance filter as the power electronics assembly 20, which is used, for example, for the ePTO socket, the DC / DC converter, and / or for charging the vehicle's electrical energy storage device.

[0024] Modular system 1 includes a first system module 2 and a second system module 5. First system module 2 has a first housing unit 3 and a first electrical functional unit 4. First housing unit 3 can have a stepped shape. Second system module 5 has a second housing unit 6. Second system module 5 also includes a second electrical functional unit 7. Both first system module 2 and second system module 5 each have at least one connection device 8. System modules 2 and 5 can each be at least partially preassembled.

[0025] The connecting devices 8 of the two system modules 2 and 5 are designed to complement each other. These complementary connecting devices 8 serve to secure B the first system module 2 and the second system module 5 to each other. Furthermore, these complementary connecting devices 8 serve to electrically connect E the first electrical functional unit 4 and the second electrical functional unit 7 to each other. Thus, these complementary connecting devices 8 have a dual function. The electrical connection E and the securing B can be achieved at the same or different locations.

[0026] In the assembled state, the complementary connecting means 8 can form a plug connection 11. Alternatively or additionally, these complementary connecting means 8 can form a screw connection 12. The plug connection 11 and / or screw connection 12 enable automated assembly of the system modules 2, 5 for automated production of the modular electrical control device 100. In the assembled state, the complementary connecting means 8 can form a high-current connection and / or a control connection of the two electrical functional units 4, 7.

[0027] The two system modules 2, 5 can be mounted to one another via their complementary connecting devices 8 to form a modular electrical control device 100 in the assembled state. In the assembled state, the first housing unit 3 and the second housing unit 6 jointly delimit a housing interior 10 of the modular electrical control device 100. In this case, in the assembled state, the housing interior 10 is bounded by the two housing units 3, 6 in a fluid-tight manner. For example, the housing interior 10 can be defined in a liquid-tight, air-tight, and / or dust-tight manner. In particular, the sealing of the housing interior 10 meets IP6K9K protection class according to ISO 20653. The electrical functional units 4, 7 and the complementary connecting devices 8 are arranged in the housing interior 10. In this way, these functional units 4, 7 and the complementary connecting devices 8 can be mechanically and / or electrically shielded from the external environment of the modular electrical control device 100, resulting from the assembly, by the two housing units 3, 6 in the assembled state.

[0028] In this case, the first housing unit 3 and the second housing unit 6 are fixed to each other in the assembled state. To secure the two housing units 3 and 6, screwed housing connections 26 of the modular system 1 are provided. These screwed connections are arranged on the housing flanges of the first housing unit 3 and the second housing unit 6. An annular seal of the modular system 1 can be located between the housing flanges. The housing units 3 and 6 can each include at least one aluminum die-casting.

[0029] Here, the second housing unit 6 is constructed in two parts. Here, the second housing unit 6 has a first housing part 6A and a second housing part 6B. For example, the second housing part 6B is constructed in a cover shape (see Figure 2 The second housing part 6B may be configured in a hood shape (see Figure 1 In other embodiments not shown in the figures, the second housing unit 6 can be constructed in one piece. Here, the first housing part 6A can be installed between the second housing part 6B and the first housing unit 3 to form Figure 1 and Figure 2 Thus, the first housing part 6A can form an intermediate housing part which can be mounted between the first housing unit 3 and the second housing part 6B.

[0030] For example, the first housing part 6A has at least one installation opening 23. In the installed state, the second housing part 6B covers the installation opening 23 of the first housing part 6A. The installation opening 23 is covered by the second housing part 6B on the side of the first housing part 6A facing away from the first housing unit 3.

[0031] The second housing component 6B can be removed from the first housing component 6A. When the second housing component 6B is removed from the first housing component 6A, the second housing component 6B can be removed from the mounting opening 23, thereby making the housing interior 10 accessible from the outside, i.e., from the external environment, through the mounting opening 23. For example, when the second housing component 6B is removed from the mounting opening 23, the complementary connecting device 8 arranged in the housing interior 10 can be accessed from the outside through the mounting opening 23.

[0032] The first housing unit 3 has, for example, at least one positioning aid 24. The positioning aid 24 of the first housing unit 3 can be arranged facing the housing interior 10. In other words, the positioning aid 24 of the first housing unit 3 can be arranged on the inner side of the first housing unit 3 facing the housing interior 10. In particular, the positioning aid 24 of the first housing unit 3 faces the second housing unit 6. The positioning aid 24 of the first housing unit 3 is used, for example, to align the first electrical functional unit 4 relative to the first housing unit 3. Accordingly, the positioning aid 24 of the first housing unit 3 can be used to position the first electrical functional unit 4 in the housing interior 10. Alternatively or additionally, the second housing unit 6 can have at least one positioning aid 24 facing the housing interior 10. In other words, the positioning aid 24 of the second housing unit 6 can be arranged on the inner side of the second housing unit 6 facing the housing interior 10. In particular, the positioning aid 24 of the second housing unit 6 faces the first housing unit 3. The positioning aid 24 of the second housing unit 6 is used, for example, to align the second electrical functional unit 7 relative to the second housing unit 6. Accordingly, the second electrical functional unit 7 can be aligned in the housing interior 10 by means of the positioning aid 24 of the second housing unit 6. The second housing unit 6 has an integrated screw cover for a screw connection 28, by means of which the second electrical functional unit 7 is detachably fastened to the second housing unit 6.

[0033] The first housing unit 3 and the second housing unit 6 each have, for example, a positioning section 25. The positioning sections 25 of the two housing units 3, 6 can be used to align the two housing units 3, 6 relative to each other. Here, the positioning section 25 of the first housing unit 3 is designed and arranged to complement the positioning section 25 of the second housing unit 6. These positioning sections 25 are, for example, arranged on the housing flanges of the first housing unit 3 and the second housing unit 6. These housing flanges can be constructed to be circumferential. The two housing parts 6A, 6B of the second housing unit 6 can have a positioning device constructed in the same manner as the positioning section 25 to simplify the positioning of the housing parts 6A, 6B relative to each other. The first housing unit 3 can be constructed as a one-piece.

[0034] In accordance with Figure 1In one embodiment, the two system modules 2 and 5 have complementary coupling devices 13. In the installed state, these complementary coupling devices 13 are coupled to one another in a fluid-conducting manner, i.e., gas-conducting and / or liquid-conducting. In the installed state, the two complementary coupling devices 13 are coupled to one another in such a way that they fluidically connect the fluid paths 14 of the first system module 2 to the fluid channels 15 of the second system module 5 while being sealed relative to the housing interior 10. Conversely, the second system module 5 can have a fluid path 14 and the first system module 2 can have a fluid channel 15, which, in the installed state, are fluidically connected to one another via complementary coupling devices 135.

[0035] At least one of the system modules 2, 5 (here, the first system module 2) has a heat exchanger 16. The heat exchanger 16 has a fluid path 14 through which a fluid, such as a liquid and / or a gas, can flow. In the installed state, the fluid path 14 of the heat exchanger 16 is separated from the housing interior 10 of the modular electrical control device 100 in a fluid-tight manner, such as an airtight and / or liquid-tight manner. At least one of the system modules 2, 5 can have a cooling pipe 17, see Figure 1 The cooling pipe 17 and the heat exchanger 16 can be used to adjust the temperature of the electrical components 20 of at least one of the electrical functional units 4, 7, in particular to cool them. Figure 1 In comparison, according to Figure 2 In the embodiment of FIG. 1 , the heat exchanger 16 is present, but the cooling tube 17 is omitted.

[0036] according to Figure 1 , the second system module 5 has such a cooling pipe 17. The cooling pipe 17 extends, for example, at least partially along the electrical functional unit 7. Accordingly, the cooling pipe 17 extends at least partially along the electrical functional unit 7. The cooling pipe 17 defines the following fluid channel 15, through which a fluid, in particular a liquid and / or a gas, can flow. Here, in the installed state, the fluid path 14 of the heat exchanger 16 is connected to the fluid channel 15 in a fluid-conducting manner via a complementary coupling device 13 while being sealed relative to the housing interior 10. The cooling pipe 17 can be in thermal contact with at least one of the electrical components 20, such as the first electrical functional unit 4 and / or the second electrical functional unit 7. The cooling pipe 17 can be a so-called "heat pipe".

[0037] exist Figure 1In the coupled state shown, fluid can flow sequentially through the fluid channel 15 and the fluid path 14. Here, when the fluid flows through the fluid channel 15, it can absorb heat from the second electrical functional unit 7 and transfer it to the fluid path 14 of the heat exchanger 16. With the help of the heat exchanger 16, the heat carried by the fluid can be released to the environment of the modular electrical control device 100. In this way, the modular electrical control device 100, and in particular the electrical functional unit 7, can be cooled particularly effectively.

[0038] Here, the first electrical functional unit 4 and the second electrical functional unit 7 each have a printed circuit board 18. Each printed circuit board 18 has a mounting side 19 with electrical components 20 of the respective electrical functional unit 4, 7. Furthermore, each printed circuit board 18 has a soldering side 21 opposite the mounting side 19. Thus, the first electrical functional unit 4 has a printed circuit board 18 that carries the electrical components 20 of the first electrical functional unit 4 on its mounting side 19. The second electrical functional unit 7 similarly has a printed circuit board 18 that carries the electrical components 20 of the second electrical functional unit 7 on its mounting side 19. In the assembled state, these printed circuit boards 18, with their mutually facing soldering sides 21, delimit an intermediate space 22 of the modular electrical control device 100. The fixing B between the first and second system modules 2, 5, and the electrical connection E between the first and second electrical functional units 4, 7 are achieved by complementary connecting devices 8 extending through the intermediate space 22 in the assembled state. In other words, in the mounted state, the complementary connecting means 8 extend through the intermediate space 22 between the two circuit boards 18 , here along the connecting direction R. The system modules 2 and 5 can be connected to one another for mounting along the connecting direction R. The circuit boards 18 can extend transversely, in particular perpendicularly to the connecting direction R.

[0039] The housing units 3, 6 may each have a receiving space for receiving electrical components 20 arranged on the circuit board 18. The electrical components 20 may be potted with a potting material when accommodated in the receiving spaces.

[0040] For example, the modular system 1 further comprises an electromagnetically effective shielding device 27. In the installed state, the electromagnetically effective shielding device 27 is arranged between the first electrical functional unit 4 and the second electrical functional unit 7. For example, the shielding device 27 is arranged in the intermediate space 22 of the modular control device 100, which is formed between the circuit boards 18 of the two electrical functional units 4, 7. In this case, in the installed state, the shielding device 27 is electrically and mechanically connected to at least one of the housing units 3, 6.

Claims

1. A modular system (1) for a modular electrical control device (100), comprising: a first system module (2) having a first housing unit (3) and a first electrical functional unit (4), and a second system module (5) having a second housing unit (6) and a second electrical functional unit (7), -in, The first system module (2) and the second system module (5) have complementary connecting means (8) for fixing the first system module (2) and the second system module (5) to each other (B) and for electrically connecting the first electrical functional unit (4) and the second electrical functional unit (7) to each other (E), - wherein the first system module (2) and the second system module (5) can be mounted to each other via their complementary connecting means (8) so as to form the modular electrical control device (100) in the mounted state, -Wherein, in the installed state, the first housing unit (3) and the second housing unit (6) jointly define a housing interior space (10) of the modular electrical control device (100) in a fluid-tight, in particular liquid-tight manner, and the first electrical functional unit (4) and the second electrical functional unit (7) as well as the complementary connecting device (8) are arranged in the housing interior space (10).

2. Modular system (1) according to claim 1, characterized in that The second housing unit (6) is constructed in two parts and comprises a first housing part (6A) and a cover-shaped second housing part (6B), and - the first housing part (6A) is mountable between the second housing part (6B) and the first housing unit (3), - In particular, the first housing part (6A) has at least one mounting opening (23), wherein in the mounted state, the second housing part (6B) covers the mounting opening (23) in a manner facing away from the first housing unit (3) so that when the second housing part (6B) is removed from the mounting opening (23), the housing interior (10), in particular the complementary connecting device (8) arranged in the housing interior (10), can be reached from the outside through the mounting opening (23).

3. Modular system (1) according to any one of the preceding claims, characterized in that - the first housing unit (3) has at least one positioning aid (24) facing the housing interior (10) for aligning the first electrical functional unit (4) relative to the first housing unit (3); and / or The second housing unit (6) has, facing the housing interior (10), at least one positioning aid (24) for aligning the second electrical functional unit (7) relative to the second housing unit (6).

4. Modular system (1) according to any one of the preceding claims, characterized in that - the first housing unit (3) and the second housing unit (6) each have a positioning section (25) for aligning the first housing unit (3) and the second housing unit (6) relative to each other, and - the positioning section (25) of the first housing unit (3) is constructed and arranged in a complementary manner to the positioning section (25) of the second housing unit (6), In particular, the positioning section (25) is arranged on a particularly circumferential housing flange of the first housing unit (3) and the second housing unit (6).

5. Modular system (1) according to any one of the preceding claims, characterized in that The complementary connecting means (8) form a plug connection (11) and / or a screw connection (12) in the mounted state.

6. Modular system (1) according to any one of the preceding claims, characterized in that - the first system module (2) and the second system module (5) have complementary coupling means (13), wherein the complementary coupling devices (13) are coupled to one another in a fluid-conducting manner in the mounted state in such a way that the complementary coupling devices (13) connect the fluid path (14) of the first system module (2) and the fluid channel (15) of the second system module (5) to one another in a fluid-conducting manner, or vice versa, while being sealed relative to the housing interior (10).

7. Modular system (1) according to any one of the preceding claims, characterized in that - at least one system module (2, 5) has a heat exchanger (16) having a fluid path (14) through which a fluid, in particular a liquid and / or a gas, can flow, and In the installed state, the fluid path (14) is separated from the housing interior (10) of the modular electrical control device (100) in a fluid-tight, in particular gas-tight and / or liquid-tight manner.

8. Modular system (1) according to claim 7, characterized in that - at least one system module (2, 5) has a cooling pipe (17), which extends at least partially along the electrical functional unit (4, 7) of the system module (2, 5) and delimits a fluid channel (15) through which a fluid, in particular a liquid and / or a gas, can flow, -in, In the installed state, the fluid channel (15) is connected to the fluid path (14) in a fluid-conducting manner via a complementary coupling device (13) while being sealed relative to the housing interior (10).

9. Modular system (1) according to any one of the preceding claims, characterized in that - the first electrical functional unit (4) and the second electrical functional unit (7) each have a printed circuit board (18), wherein the printed circuit board (18) has a mounting side (19) with electrical components (20) of the respective electrical functional unit (4, 7) and a soldering side (21) opposite the mounting side (19), wherein the circuit board (18) in the mounted state delimits an intermediate space (22) of the modular electrical control device (100) with its soldered sides (21) facing each other, - wherein the fixing (B) of the first system module (2) and the second system module (5) to each other and the electrical connection (E) of the first electrical functional unit (4) and the second electrical functional unit (7) to each other are formed in the installed state by the complementary connecting device (8) passing through the intermediate space (22).

10. Modular system (1) according to any one of the preceding claims, characterized in that In the assembled state, the first housing unit (3) and the second housing unit (6) are fixed to each other on the housing flanges of the first housing unit (3) and the second housing unit (6), in particular by means of a housing screw connection (26) of the modular system (1).

11. Modular system (1) according to any one of the preceding claims, characterized in that - the modular system (1) has an electromagnetically effective shielding device (27), which, in the installed state, is arranged between the first electrical functional unit (4) and the second electrical functional unit (7), in particular in the intermediate space (22) of the modular control device (100), - wherein the shielding device (27) is electrically and mechanically connected to at least one of the housing units (3, 6) in the installed state.

12. A modular electrical control device (100), comprising: - a first system module (2) and a second system module (5) of a modular system (1) according to any one of the preceding claims, - wherein the first system module (2) and the second system module (5) are mounted to one another in such a way that the first housing unit (3) and the second housing unit (6) jointly delimit a housing interior space (10) of the modular control device (100) in a fluid-tight, in particular liquid-tight manner, and the first electrical functional unit (4) and the second electrical functional unit (7) as well as complementary connecting means (8) are arranged in the housing interior space (10).

Images