DE19915836A1 - Modular housing system for control and power electronics has hood together with power module and control module, in which supply terminals are connectable to each other via pluggable electrical connectors - Google Patents

Abstract

The system has a hood, a power module and a control module for activating the power components of the power module. The control module, power module and supply terminals are connected to each other via pluggable electrical connections. The power module has an insulating material frame terminated at one end by a cooling plate.

Description

The invention relates to a plastic housing system for installation electrical and electronic modules for high electrical outputs and / or large switching currents. Essentially, these devices are for Control of motors. Examples include: start-up control gen, power rectifier, frequency converter, semiconductor switch Etc.

Such documents are in the documents EP 0 631 463 B1 and EP 0 506 288 B1 Applications and types described in more detail.

The prior art, as in the above-mentioned writings wrote, but leaves only a small with regard to the device structure Recognize modularity. As a result, on the one hand, they are relatively complex Steps necessary to manufacture the devices and device variants to create, on the other hand, economic service options difficult, so that only the replacement of the complete Device remains and no consideration for the ecological handling of the Resources can be taken.  

The invention is therefore based on the object of a housing system create that has an advantageous modularity, and thus a easy variation and expandability, as well as an easy exchange Ability of the functional elements allowed, and in this context further improvement in the ratio of construction volume to performance set of the terminal is made possible.

According to the solution to the problem according to the invention, the devices mentioned at the beginning are divided into functional modules.
These are essentially:
Housing parts
Terminals
Control electronics
Power electronics (frame with connection elements)
Heatsink

In the following the innovation is described in detail and is based on exemplary drawings made clear. Show it:

Fig. 1 is an exploded view of a housing system according to the invention

Fig. 2 composite housing system of Fig. 1

Fig. 3 shows a smallest device type, based on the housing system according to the invention

Fig. 4 shows an expanded device structure, by means of the housing system according to the invention

Fig. 5 shows another device variant with an internal heat sink

description

Compared to the prior art, the housing according to the invention enables system the construction of the devices mentioned at the outset without complex strands wiring. The modular structure also favors the flexible Combine device functions as well as economical creation of device variants.

As shown by way of example in FIG. 1, the individual modules can be dismantled without loosening solder connections. They are held only by plug and screw connections.

The housing cover ( 1 ) acts as a load-bearing component for all other modules and is used to fasten the device during installation.

The heart of the housing system is the power module ( 4 ). The power module ( 4 ) consists of an insulating frame ( 45 ) which carries the solid connecting wires ( 41 ), ( 42 ). Inserted in the Isolierstoffrah men is the cooling plate ( 44 ), which closes the insulating frame on one side and thus forms a flat, trough-like component. The heat sink ( 44 ) is also the carrier of the semiconductor components.

Due to the inventive design, the side surface of the Iso lierstoffrahmens ( 45 ) by the cooling plate ( 44 ) is used to a maximum, where is advantageously solved by the essential task, namely the removal of the heat loss me.

On the large-area cooling plate ( 44 ), the power semiconductors can now also be applied in an advantageous, flat design, so that because of the large heat transfer cross-sections, the heat loss from the semiconductors can be dissipated as quickly as possible.

Through an opening ( 12 ) in the side wall of the hood ( 1 ), depending on the version of the device, the heat sink ( 5 ) by means of fastening screws ( 53 ) at the fastening points ( 47 ) of the power module ( 4 ) can be attached. This results in direct contact of the heat sink surface ( 54 ) with the heat sink ( 44 ), which ensures optimally adapted heat dissipation.

About the flat power semiconductors within the Iso lierstoffrahmens, similar to "guitar strings", the connecting wires ( 41 ) for the control stretched. The control connections of the semiconductors can thus be connected to the connecting wires ( 41 ) of the power module ( 4 ) at a freely selectable location within the frame. The connecting wires ( 41 ) are angled at least at one end in an L-shape and are inserted into the insulating frame ( 45 ) in such a way that a pluggable electrical connection can be made to the control module ( 3 ).

The connecting wires ( 42 ) required for the power transmission are embedded in the outside of the insulating frame. Each Rahmensei te carries a maximum of 3 connecting wires ( 42 ) with a preferably circular cross-section. The wire ends ( 42 a), ( 42 b) are flattened. Suitable shaping of the connecting wires ( 42 ) ensures that the flattened ends ( 42 a) can be guided through the corresponding openings ( 46 ) in the frame wall into the interior of the power module ( 4 ). There they form the electrical connection points to the power connections of the corresponding semiconductor elements ( 43 ).

For tapping electrical quantities for the control module ( 3 ), the flattened wire ends ( 42 a) can also be provided with further massive connection wires.

In the preferred design, the power module ( 4 ) is cast with a hardenable insulating resin, resulting in a compact, mechanically stable and very effectively electrically insulated module. In the advantageous embodiment, the height of the cast resin filling is selected so that the control module ( 3 ) can also be inserted into the insulating frame ( 45 ) parallel to the plane of the cooling plate.

The control module ( 3 ) is preferably a printed circuit board in a known design. Depending on the circuit applied, different device functions can be implemented.

The pluggable electrical connection to the power module ( 4 ) form sleeves ( 31 ) which are placed in the control module ( 3 ) so that they contact the L-shaped angled ends of the connecting wires ( 41 a) of the power module ( 4 ) detachably.

The electrical connection to the control periphery of the device is formed by the control terminals ( 22 ). They are arranged on the control module ( 3 ) so that they are accessible from the front of the device, whereby a large insulation distance from the power module ( 4 ) and its connections is achieved.

In order to be able to properly connect the two modules ( 3 ) and ( 4 ), both the control terminals ( 22 ) mentioned above and the flattened ends of the connecting wires ( 42 b) are to be equipped with insulating terminal bodies ( 23 ).

The flattened ends of the connecting wires ( 42 b) are therefore shaped so that the terminal body ( 23 ) can be plugged in and thus the complete power terminal ( 21 ) is formed.

The control terminals ( 22 ) are enclosed with the terminal body ( 24 ) and at the same time the complete device front is formed.

If it requires the power conversion of the device that the heat generated must be dissipated faster and more effectively, the modular housing system according to the invention offers the possibility of screwing the heat sink to ( 5 ) the large cooling plate ( 44 ) of the power module ( 4 ).

Depending on the power conversion, different sizes of heat sinks can be used be used.

To protect against accidental contact with the heat sink ( 5 ), which is heated during operation, its front is provided with the cover plate ( 51 ).

Fig. 2 shows an example of the modules of the new Ge housing system just described in composite form.

Other figures show the variability of the designs due to of the modular housing system according to the invention simple and for everyone Application can be optimally realized.

For example, Fig. 3 represents the smallest type of device without a heat sink ( 5 ). This eliminates the side opening ( 12 ) in this embodiment, whereby the hood ( 1 ) is completely closed. If no control terminals are necessary due to the simple device function, the terminal body ( 24 ) is replaced by the front panel ( 26 ).

NEN Figs. 4 and 5 show further embodiments of devices that are implemented in a simplest manner by the modular housing system Kgs.

As an example, the size of the heat sink ( 5 ) with cover plate ( 51 ) in FIG. 4 is adapted to an increased power conversion.

The control module ( 3 ) can also be expanded if additional functions are required. The control terminal block ( 25 ) can then be mounted for a larger number of control connections.

If it allows the implemented power loss, or if it requires a uniform design, Fig. 5 shows an embodiment with the heat sink inside. The necessary convection is ensured by cooling slots ( 11 ) in the top and bottom of the hood. A terminal cover ( 52 ) in combination with the front cover ( 26 ) then fulfills the requirement for a uniform design.

Figure legend

1

Hood

11

Cooling slots

12th

side opening of the hood

2nd

Clamps

21

Power terminals

22

Control terminals

23

Terminal body

24th

Terminal body

25th

Control terminal block

26

Front panel

3rd

Control module

31

Sleeve

4th

Power module

41

Connecting wire

41

a end of the connecting wire

42

Connecting wire

42

a end of the connecting wire

42

b End of the connecting wire

43

Power semiconductors

44

Heat sink

45

Insulating frame

46

Openings in the frame wall

47

Attachment point

5

Heatsink

51

Cover plate

52

Terminal cover

53

Mounting screws

54

Heat sink area

Claims (11)

1. Housing system for the installation of electrical and / or electronic modules, which has the following features:

• - A housing hood ( 1 );
• - an insertable into the housing hood (1) power module (4) for receiving power devices (43);
• - A control module ( 3 ) for controlling the power components ( 43 ) of the power module;
• - The control module ( 3 ), the power module ( 4 ) and the associated terminals ( 21 and 22 ) are connected to each other by means of pluggable electrical contacts.

2. Housing system according to claim 1, characterized in that the power module ( 4 ) has an insulating frame ( 45 ) which is closed on one side by a cooling plate ( 44 ). 3. Housing system according to claim 2, characterized in that the cooling plate ( 44 ) directly receives the power components ( 43 ). 4. Housing system according to one of the preceding claims, characterized in that in the power module ( 4 ) connecting wires ( 41 ) for connecting the power components ( 43 ) are tensioned. 5. Housing system according to claim 4, characterized in that the connecting wires ( 41 ) are angled at at least one end. 6. Housing system according to claim 5, characterized in that the control module ( 3 ) sleeves ( 31 ) for contacting the angled ends of the connecting wires ( 41 ) of the power module ( 4 ). 7. Housing system according to one of the preceding claims, characterized in that the power module ( 4 ) for a power transmission requisite connecting wires ( 42 ) with flattened wire ends ( 42 a, 42 b), the power components of the Lei stungsbauelemente ( 43 ) can be connected and are embedded in an outer side of the insulating frame ( 45 ). 8. Housing system according to one of the preceding claims, characterized in that the power module has a cast resin filling. 9. Housing system according to one of the preceding claims, characterized in that the control module ( 3 ) has control terminals ( 22 ) for connection to a control periphery, which are accessible from a front of the housing system. 10. Housing system according to one of the preceding claims, characterized in that on the control terminals ( 22 ) and the flattened wire ends ( 42 a, 42 b) insulating terminal body ( 23 and 24 ) are pluggable. 11. Housing system according to one of the preceding claims, characterized in that the housing hood ( 1 ) has a side opening ( 12 ) for fastening gene heatsinks of various sizes ( 5 ) on the cooling plate ( 44 ) of the power module ( 4 ).