System with an electronic device and components

Abstract

The present invention relates to a system having an electronic device, in particular a converter or an inverter, and components, wherein the electronic device has a heat sink, wherein a substrate is fastened to the heat sink, and the components are connected to a first adapter plate or a second adapter plate fastened to the substrate, in particular wherein the substrate is pressed onto the heat sink by a threaded part head of a threaded part screwed into a threaded hole of the heat sink.

Description

Field of the Invention

[0001] The invention relates to a system having an electronic device, in particular a converter or an inverter, and components. Background Art

[0002] As is known, electronic devices generate loss heat, and this loss heat energy can be dissipated into the environment via a heat sink. Summary of the Invention

[0003] Therefore, the object of the present invention is to improve a system having an electronic device, wherein a cheap and compact implementation should be achievable.

[0004] According to the present invention, this object is achieved in terms of the system according to the following features.

[0005] An important feature in a system having an electronic device, in particular a converter or an inverter, and components is that the electronic device has a heat sink,

[0006] wherein a substrate is fastened to the heat sink, and the components are connected to a first adapter board or a second adapter board fastened to the substrate,

[0007] In particular, wherein the substrate is pressed against the heat sink by the threaded head of a threaded member screwed into a threaded hole of the heat sink.

[0008] The advantage here is that the substrate can be selectively connected to different adapter boards, so that different components are connected to the substrate via the adapter boards, and thus the components are also held by the substrate. The substrate itself is in turn held by the heat sink of the electronic device.

[0009] Therefore, the substrate is multifunctional because it is connected to the heat sink in a thermally conductive manner and also performs a holding function for the selectively connectable adapter boards or the components connected to the adapter boards. Additionally, the substrate can also be used as an electrical ground, i.e., as a shielding bracket and a shielding connection between the protective conductor and the cable leading to the electronic device.

[0010] In an advantageous design, the substrate serves as a shielding plate,

[0011] wherein the substrate is electrically connected to the metallic heat sink,

[0012] In particular, wherein the substrate is electrically connected to the reference potential of the electronic circuit of the electronic device,

[0013] In particular, wherein the reference potential is the ground potential / electrical ground and / or is connected to the protective conductor / ground safety lead of the electronic device. The advantage here is that the substrate serves as a shielding plate.

[0014] In an advantageous design, a power supply cable, in particular a three-phase cable, is pressed against the substrate by means of a clamping plate,

[0015] In particular, the screw head of the first screw presses the clamping plate against the power supply cable, and the corresponding threaded region of the first screw is at least partially screwed into the corresponding threaded hole of the substrate. The advantage here is that the substrate is used for relieving the tensile load on the power supply cable and / or for holding and guiding the power supply cable, and as a connection to the electrical ground, i.e., to the reference potential.

[0016] In an advantageous design, at least one clamping clip presses the cable, in particular a cable having signal lines, against the substrate.

[0017] In particular, the screw head of the corresponding second screw presses the clamping clip against the cable, and the corresponding threaded region of the second screw is at least partially screwed into the corresponding threaded hole of the substrate. The advantage here is that the substrate has a holding function and a tensile load relieving function for the cables leading to the electronic device.

[0018] In an advantageous design, the substrate is implemented as a bent part such that the region of the substrate in contact with the cable is flat.

[0019] The region of the substrate in contact with the power supply cable is flat.

[0020] The plane containing the region of the substrate in contact with the cable and the plane containing the region of the substrate in contact with the power supply cable are parallel to each other and spaced apart from each other. The advantage here is that the cable and the power supply cable can be laid spaced apart from each other. Therefore, the signals for data transmission are less interfered with.

[0021] In an advantageous design, a connection for the reference potential - in particular to the housing part / electrical ground and / or protective conductor - is arranged on the substrate.

[0022] In particular, in such a way that a third screw is screwed into the threaded hole of the substrate, and the screw head of this third screw presses the line connected to the reference potential. The advantage here is that the substrate serves as a shielding plate and thus as an electrical ground.

[0023] In an advantageous design, the first adapter plate has a connection tongue, in particular a protruding connection tongue, and the connection tongue extends into or through a notch, in particular a slot-shaped notch, of the substrate.

[0024] In particular, the first adapter plate has a through notch, and the screw passing through the substrate extends through this through notch, in particular such that the screw head of the screw presses the substrate against the first adapter plate.

[0025] In particular, the through notch in the first adapter plate is a threaded hole, and the screw passing through the substrate is screwed into this threaded hole with its threaded area. The advantage here is that the first adapter plate is form-fittingly connected to the substrate. Here, not only is the connecting tongue inserted into the notch, but also a screw is used for threaded connection. In this way, a reliable connection is ensured.

[0026] In an advantageous design, the component has a mechanical interface suitable for mounting rail assembly and is connected to the adapter plate at this mechanical interface. The advantage here is that fastening can be carried out simply.

[0027] In an advantageous design, the first adapter plate has an edge as a latching nose for snap connection, in particular having a tongue region protruding in the end region opposite to this edge. The advantage here is that an inexpensive and simple fastening can be provided.

[0028] In an advantageous design, the first adapter plate has an intermediate region between the region of the first adapter plate that abuts against the substrate and the connecting region having an edge and a tongue region.

[0029] In particular, it has this intermediate region such that the first substrate is bent twice.

[0030] Wherein, this intermediate region serves as a lateral limiting part and / or a stop part for the component connected to the first adapter plate in the connecting region. The advantage here is that on the one hand, this intermediate region enlarges the surface and thus causes part of the heat flow to flow out into the ambient air, and on the other hand, when the component abuts against the intermediate region and is thermally conductively connected, the connecting region can be used as a stop part and thus a limiting part and / or alternatively can be used to absorb the heat flow. Therefore, the component can dissipate heat on both sides, namely at the intermediate region and at the region connected to the first adapter plate.

[0031] In an advantageous design, the component is thermally conductively connected to the first adapter plate, and / or contacts the first adapter plate at the intermediate region and is thermally conductively connected. The advantage here is that the heat dissipation of the component is further improved.

[0032] In an advantageous design, the component is a rectifier, in particular a braking rectifier.

[0033] In particular, the rectifier is implemented to feed the coil of the electromagnetically actuable brake of the braking motor, and the electric motor of this braking motor is fed from an electronic device.

[0034] In particular, the electronic device and the rectifier are implemented such that only the loss heat from the controllable semiconductor switches of the electronic device or only the loss heat from the rectifier is conveyed to the heat sink. The advantage here is that the loss heat from the rectifier can be dissipated into the environment via the heat sink. Here, it is preferable to alternately load the heat sink by either being able to convey the loss heat from the electronic device or being able to convey the loss heat from the rectifier.

[0035] In an advantageous design, the second adapter plate also has connecting tongues, in particular protruding connecting tongues, which extend into or through a recess, in particular a slot-shaped recess, of the substrate.

[0036] In particular, the second adapter plate has a through recess through which a screw passing through the substrate passes, in particular such that the screw head of the screw presses the substrate against the second adapter plate.

[0037] In particular, the through recess of the second adapter plate is a threaded hole into which the screw passing through the substrate is screwed with its threaded region. The advantage here is that a simple and reliable fastening can be implemented. In addition, an interface is thus produced on the substrate on which different adapter plates can be connected.

[0038] In an advantageous design, the contact area between the component, in particular the braking resistor, and the second adapter plate is flat, and the plane accommodating this contact area is perpendicular to the plane containing the likewise flatly implemented contact area between the respective component and the first adapter plate. The advantage here is that the heat is dissipated from the component either parallel to the plane containing the contact area between the supply cable and the substrate or perpendicular to this plane. In addition, either a component provided for mounting on a rail can be connected, or a component that can be screwed onto a surface can be connected. In the latter case, the second adapter plate is used at this time, otherwise the first adapter plate is used.

[0039] In an advantageous design, the contact surface between the second adapter plate and the component, in particular the braking resistor, is larger than the contact surface between the second adapter plate and the substrate. The advantage here is that a large heat flow can be introduced, where part of the heat flow directly flows out from the substrate into the ambient air, while the remaining heat flow can be dissipated via the heat sink.

[0040] The invention is not limited to the feature combinations of the claims. For a person skilled in the art, other reasonable combination possibilities of the claims and / or the features of the individual claims and / or the features of the description and / or the features of the drawings can be obtained, in particular from the purpose set forth and / or by comparison with the prior art. Description of the Drawings

[0041] The present invention will be described in detail below with reference to the drawings:

[0042] Figure 1The electronic device 1 with a substrate 2 is shown in an oblique view, and the substrate is connected to the heat sink 4 of the electronic device 1 by means of screws 3;

[0043] Figure 2 In the oblique view, in addition to the substrate 2, the first adapter board 24 is also shown;

[0044] Figure 3 From Figure 2 a different viewing direction, the substrate 2 and the first adapter board 24 are shown;

[0045] Figure 4 The first adapter board 24 connected to the substrate 2 by means of screws 22 is shown;

[0046] Figure 5 From Figure 4 a different viewing direction, the first adapter board 24 screwed onto the substrate 2 is shown;

[0047] Figure 6 The braking rectifier 60 fastened to the first adapter board 24 is shown;

[0048] Figure 7 From another viewing direction, the braking rectifier 60 is shown;

[0049] Figure 8 The connector 80 fastened to the first adapter board 24 instead of the braking rectifier 60 is shown;

[0050] Figure 9 The second adapter board 90 connected to the substrate 2 instead of the first adapter board 24 is shown;

[0051] Figure 10 The braking resistor 100 connected to the second adapter board 24 is shown;

[0052] Figure 11 From another viewing direction, the braking resistor 100 is shown. Detailed implementation mode

[0053] As shown in the drawings, the substrate 2 is fastened, especially detachably, to the electronic device 1, and either the first adapter board 24 or alternatively the second adapter board 90 can be fastened to the substrate. Thus, depending on the fastened adapter boards 24, 90, different components such as the braking rectifier 60, the connector 80 or the braking resistor 100 can be fastened.

[0054] Therefore, a modular structure can be achieved, whereby a large number of different products can be manufactured with only a small number of structural elements.

[0055] The electronic device 1 has a heat sink 4, which is preferably manufactured as a continuous casting. The heat sink 4 is not only implemented to form the housing, but also forms the rear wall of the electronic device 1, and the electronic device can be fastened to the switch cabinet or the wall of the building by using the heat sink.

[0056] The electronic device 1 is preferably implemented as an inverter or a current converter and feeds power to the motor, and for this purpose, three-phase cables are used.

[0057] Similarly, the electronic device 1 is powered via three-phase cables (not shown in the figure).

[0058] Since the three-phase cable has at least three phase line circuits and one circuit for the neutral line and / or reference potential, the three-phase cable is thicker than the cable for guiding signal lines.

[0059] The substrate 2 is arranged below the electronic device 1. The three-phase cable passes between the clamping plate 6 and the substrate 2, and is pressed against the substrate 2 by the clamping plate 6 in the following way: the screw 9 is screwed into the corresponding threaded hole of the substrate 2, and the screw head of the screw 9 presses the clamping plate 6 towards the substrate 2.

[0060] The substrate 2 is manufactured as a stamping and bending part and is electrically conductive as a metal plate part. The fastening area of the substrate 2 provided for the heat sink 4 is bent, i.e., curved, with respect to the adjacent intermediate area of the substrate 2, and this intermediate area is bent, i.e., curved, in the opposite direction with respect to the area of the substrate 2 where the clamping plate 6 is present. An adjacent additional intermediate area is arranged in a bent, i.e., curved, manner from this area, and a fastening area is provided in a bent, i.e., curved, manner from the additional intermediate area, and a clamping collar 7 is arranged on the fastening area, and the clamping collar is pressed onto the cable (not shown in the figure) by the screw 8 screwed into the corresponding threaded hole of the fastening area with its screw head.

[0061] The fastening area for the clamping collar 7 is parallel to and spaced apart from the area of the substrate 2 provided for the clamping plate 6. Therefore, better accessibility is achieved. The cable fastened by the clamping collar 7 is also led to the electronic device 1 and can enable data and / or signal transmission for the electronic device 1.

[0062] A ground connection is also arranged on the substrate 2 in the following way: the screw 5 screwed into the threaded hole of the substrate 2 can clamp the cable terminal connected to the ground line, especially the neutral line or the protective conductor, on the substrate 2.

[0063] As Figure 2 shown, the first adapter plate 24 has a protruding connection tongue 25, which extends into a notch, especially a through notch, of the substrate 2. The notch is preferably implemented as a slit here.

[0064] For further fastening, the first adapter plate 24 has a through notch 23 for centering, into which the screw 22 extends. The screw is screwed into the threaded hole of the base plate 2, and the threaded region of the screw extends into the notch 23 of the first adapter plate 24 on the side of the base plate facing away from the screw head of the screw 22.

[0065] The first adapter plate 24 is also metallic and is thus electrically conductive.

[0066] The connection region 28 is formed on the first adapter plate 24, in particular with two bends, in the region of the first adapter plate 24 that abuts against the base plate 2. The connection region has an installation rail edge 26 and a protruding tongue region 27, such that components provided for the installation rail assembly can be fastened in the connection region 28 of the first adapter plate 24.

[0067] The tongue region 27 is arranged on the outer edge of the connection region 28 of the first adapter plate 24 opposite to the installation rail edge.

[0068] According to Figure 6 , a braking rectifier 60 is provided as a component that can be fastened to the installation rail edge 26. The braking rectifier 60 has a rectifier that is fed an alternating voltage, in particular the alternating voltage of one of the phases of a three-phase current conveyed on a three-phase cable. The direct current generated on the output side by the rectifier is conveyed to a coil that is arranged in an electromagnetically actuatable brake of an electric motor fed by an electronic device 1 implemented as an inverter. Thus, the brake can be activated or deactivated depending on the energization of the coil.

[0069] The loss heat energy of the braking rectifier 60 is dissipated via the connection region 28 to the first adapter plate 24 and from there to the heat sink 4.

[0070] Preferably, the electronic device 1 has a fan, and the air flow conveyed by the fan flows along the heat sink 4 and thus transfers the heat flow from the heat sink to the environment.

[0071] Alternatively, the braking rectifier 60 can also be fastened to an installation rail arranged in a switchgear cabinet. Due to the indirect arrangement of the braking rectifier 60 on the electronic device 1, the braking rectifier is fastened to the electronic device and can thus be arranged in abutment with the electronic device. The electronic device 1 and the braking rectifier 60 together form a structural unit.

[0072] Due to the two-bend arrangement structure of the connection region 28, it is possible to achieve a spacing of the connection region 28 from the plane of the contact surface of the heat sink 4 with the wall or with the switchgear cabinet. Thus, the screw and any nuts that may be used can be manipulated without obstruction.

[0073] Figure 7 shows the braking rectifier from another perspective.

[0074] In Figure 8 , instead of the brake rectifier 60, another component is fastened on the connection area 28. This component is, for example, the connector 80, at which the input and / or output of the electronic device 1 is led out for electrical contact. Thus, the cable guiding the signal line can be electrically connected by means of the plug connector assembled on the end area of the cable, or alternatively the signal line can be electrically connected.

[0075] As Figure 9 shown, instead of the first adapter plate 24, the second adapter plate 90 can be connected to the substrate 2, and in particular the second adapter plate can be connected to the substrate 2 in the same way as the first adapter plate 24, in particular it can be pressed onto the substrate 2 by means of the screws 22.

[0076] The second adapter plate 90 is bent such that the connection surface for connection to another component has a non-zero angle, in particular approximately 90°, with respect to the contact surface between the second adapter plate 90 and the substrate 2.

[0077] A braking resistor 100 is provided as a component. This braking resistor is pressed onto the connection surface of the second adapter plate 90. Thus, the heat dissipated by the braking resistor 100 is dissipated via the second adapter plate 90 to the substrate 2 and from there to the heat sink 4.

[0078] The braking resistor 100 can be pressed onto the second adapter plate 90 by means of the screw head of the screw 91, and this screw can be screwed into the threaded hole of the substrate 2.

[0079] The electronic device has controllable semiconductor switches, in particular semiconductor switches arranged in the form of a half-bridge in parallel with each other. The heat dissipated by the semiconductor switches is dissipated to the heat sink because these semiconductor switches are thermally connected to the heat sink 4. The semiconductor switches are arranged in the housing of the electronic device. In order to feed three-phase current to the motor to generate torque, the semiconductor switches operate in a pulse-width modulation manner. Heat dissipated is generated hereby. Here, the brake is disengaged so that the motor runs at a speed caused by the torque depending on the load torque. The brake can be implemented such that when the brake is disengaged, no heat dissipated occurs in the brake rectifier that supplies power to the coil of the brake. Heat dissipated only occurs in the brake rectifier when generating a braking torque, but at this time the semiconductor switches can be switched off and thus no heat dissipated is generated. In this way, the heat flow is either only conveyed from the semiconductor switches of the electronic device 1 or alternatively only from the brake rectifier 60 to the heat sink 4.

[0080] The brake rectifier is arranged in a separate housing independent of the electronic device 1, and this housing is fastened on the second adapter plate 90.

[0081] Alternatively, it is also possible to use the parking brake as the brake, which does not generate waste heat in the engaged state, and in particular, does not generate waste heat in the brake rectifier 60 either. Waste heat is only generated in the brake rectifier 60 in the disengaged state because the rectifier feeds a direct current to the coil of the brake. However, since the semiconductor switches also operate in a pulse-width modulation manner and thus generate waste heat especially due to switching losses, the waste heat is transferred to the heat sink 4 not only from the semiconductor switches but also from the brake rectifier 60.

[0082] The substrate 2 and the correspondingly arranged adapter plates (24, 90) also dissipate part of the heat flow to the environment because the fan arranged in the electronic device 1 transports an air flow along the heat sink 4, but the substrate 2 is arranged bent in front of the orifice of the channel provided for transporting the air flow in such a way that the transported air flow is redirected by the substrate 2.

[0083] Therefore, the substrate 2 is not only connected to the heat sink 4 in a thermally conductive manner but also redirects the air flow, especially the air flow flowing into the device. This is particularly advantageous when the air flow is diverted away from the environment and thus away from the wall.

[0084] However, the substrate 2 also increases the heat capacity of the heat sink 4.

[0085] In a further embodiment according to the invention, it is the outflowing air flow rather than the inflowing air flow that is redirected.

[0086] List of reference numerals:

[0087] 1 Electronic device, in particular an inverter or a converter

[0088] 2 Substrate

[0089] 3 Screw

[0090] 4 Heat sink

[0091] 5 Screw

[0092] 6 Clamping plate

[0093] 7 Clamping band

[0094] 8 Screw

[0095] 9 Screw

[0096] 20 Centering hole

[0097] 21 Screw

[0098] 22 Screw

[0099] 23 Notch, in particular hole

[0100] 24 First adapter plate

[0101] 25 Connecting tongue

[0102] 26 Mounting rail edge

[0103] 27 Tongue area

[0104] 28 Connecting area

[0105] 60 Brake rectifier

[0106] 80 Coupling part

[0107] 90 Second adapter plate

[0108] 91 Screw

[0109] 100 Brake resistor

Claims

1. A system having an electronic device and components, wherein the electronic device has a heat sink, characterized in that a substrate is fastened to the heat sink, and the components are connected to a first adapter board or a second adapter board fastened to the substrate, the first adapter board has a connecting tongue (25), and the connecting tongue extends into or passes through a notch of the substrate, the first adapter board has a through notch, and a screw passing through the substrate extends through the through notch, so that the screw head of the screw presses the substrate against the first adapter board.

2. The system according to claim 1, characterized in that the substrate serves as a shielding board, and the substrate is electrically connected to the metallic heat sink.

3. The system according to claim 1 or 2, characterized in that a power supply cable is pressed against the substrate by means of a clamping plate.

4. The system according to claim 1 or 2, characterized in that a cable is pressed against the substrate by means of at least one clamping clip.

5. The system according to claim 1 or 2, characterized in that the substrate is implemented as a bent part, the area of the substrate in contact with the cable is flat, the area of the substrate in contact with the power supply cable is flat, the plane where the area of the substrate in contact with the cable is located is parallel to and spaced apart from the plane where the area of the substrate in contact with the power supply cable is located.

6. The system according to claim 1 or 2, characterized in that a connection part for the reference potential is arranged on the substrate.

7. The system according to claim 1 or 2, characterized in that the component has a mechanical interface suitable for mounting rail assembly and is connected to the adapter board at the mechanical interface, and / or the first adapter board has an edge as a latching nose for snap connection.

8. The system according to claim 1 or 2, characterized in that the first adapter board has an intermediate area between the area of the first adapter board (24) abutting against the substrate (2) and the connection area (28) having an edge and a tongue area, such that the substrate is bent twice, and this intermediate area serves as a lateral limiting part and / or a stop part for the component connected to the first adapter board in the connection area (28).

9. The system according to claim 1 or 2, characterized in that the component is thermally connected to the first adapter board, and / or contacts the first adapter board on the intermediate area and is thermally connected.

10. The system according to claim 1 or 2, characterized in that the component is a rectifier.

11. The system according to claim 1 or 2, characterized in that the second adapter board also has a connecting tongue (25), and the connecting tongue extends into or passes through a notch of the substrate.

12. The system according to claim 1 or 2, characterized in that the contact area between the component and the second adapter board is flat, and the plane accommodating this contact area is perpendicular to the plane where the contact area between the corresponding component and the first adapter board, which is also implemented flatly, is located.

13. The system according to claim 1 or 2, characterized in that the contact surface between the second adapter board and the component is larger than the contact surface between the second adapter board and the substrate.

14. The system according to claim 1, It is characterized in that wherein the electronic device is a converter or an inverter.

15. The system according to claim 1, wherein The head of the threaded part that screws the substrate into the threaded hole of the heat sink is pressed against the heat sink.

16. The system according to claim 1, wherein The connecting tongue of the first adapter plate is a protruding connecting tongue.

17. The system according to claim 1, wherein The notch of the substrate is a slit-shaped notch.

18. The system according to claim 1, wherein The through notch of the first adapter plate is a threaded hole, and the screw passing through the substrate is screwed into the threaded hole with its threaded area.

19. The system according to claim 2, characterized in that, The substrate is electrically connected to the reference potential of the electronic circuit of the electronic device.

20. The system according to claim 19, wherein, The reference potential is the ground potential and / or the reference potential is connected to the protective conductor of the electronic device.

21. The system according to claim 3, wherein The power supply cable is a three-phase cable.

22. The system according to claim 3, wherein The screw head of the first screw, at least part of whose threaded area is screwed into the corresponding threaded hole of the substrate, presses the clamping plate against the power supply cable.

23. The system according to claim 4, characterized in that, The cable is a cable with signal lines.

24. The system according to claim 4, wherein The screw head of the corresponding second screw, at least part of whose threaded area is screwed into the corresponding threaded hole of the substrate, presses the clamping clip against the cable.

25. The system according to claim 6, wherein A connection part for the electrical grounding part and / or the protective conductor is arranged on the substrate.

26. The system according to claim 6, wherein The connection part for the reference potential is arranged on the substrate in such a way that a third screw is screwed into the threaded hole of the substrate, and the screw head of the third screw presses against the line connected to the reference potential.

27. The system according to claim 7, wherein The first adapter plate has a tongue region protruding from the end region opposite to this edge.

28. The system according to claim 10, wherein The rectifier is a braking rectifier.

29. The system according to claim 10, wherein The rectifier is implemented to feed the coil of the electromagnetically actuable brake of the braking motor, and the motor of the braking motor is fed from the electronic device.

30. The system according to claim 10, wherein, The electronic device and the rectifier are implemented such that only the loss heat from the controllable semiconductor switches of the electronic device or only the loss heat from the rectifier is conveyed to the heat sink.

31. The system according to claim 11, wherein The connecting tongue of the second adapter plate is a protruding connecting tongue.

32. The system according to claim 11, wherein The notch of the substrate is a slit-shaped notch.

33. The system according to claim 11, wherein The second adapter plate has a through notch, and the screw passing through the substrate passes through the through notch, so that the screw head of the screw presses the substrate against the second adapter plate.

34. The system according to claim 11, wherein The through notch of the second adapter plate is a threaded hole, and the screw passing through the substrate is screwed into the threaded hole with its threaded area.

35. The system according to claim 12, characterized in that, The component is a braking resistor.

36. The system according to claim 13, wherein The component is a braking resistor.

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