WO2017182566A1

WO2017182566A1 - Control assembly, fastening assembly, compressor device, and method for controlling a compressor device

Info

Publication number: WO2017182566A1
Application number: PCT/EP2017/059389
Authority: WO
Inventors: Andreas Metz; Harald Hengstenberger; Edmund Geisenberger
Original assignee: Systematec Gmbh
Priority date: 2016-04-20
Filing date: 2017-04-20
Publication date: 2017-10-26
Also published as: CN109312728B; DE102016107289A1; CN109312728A; EP3440354A1; EP3440354B1

Abstract

The invention relates to a control assembly (1) for the closed-loop or open-loop control of a compressor device that has a housing for a compressed fluid, wherein a deformable structural element (4) of the housing is arranged between a first pressure region (N) and a second pressure region (P) of the compressor device (23), which control assembly comprises an electrical power module (3), a cooling plate (2), which is designed to remove heat from the electrical power module (3), which is thermally coupled to the cooling plate (2), and a fastening assembly for the cooling plate (2) having a plurality of spacing elements (5), which space the cooling plate (2) from the structural element (4), wherein the spacing elements (5) are arranged in such a way that the transfer of the deformation of the structural element (4) to the cooling plate (2) is reduced. The invention further relates to a fastening assembly, to a compressor device (23), and to a method for controlling a compressor device (23).

Description

Systematec GmbH

Drive arrangement, mounting arrangement, compressor device and method for driving a compressor device

The present invention relates to a drive arrangement for controlling a compressor device, a mounting arrangement and a compressor device with a drive arrangement. Moreover, the present invention relates to a method for driving a

Compressor device.

In a compressor or compressor gases are usually compressed into fluids, which are used in various processes.

For example, in refrigeration and air conditioning, certain refrigerants such as CO2 are used, which are compressed in the circuit. In particular, in air compressors used in motor vehicles, the compression takes place with the aid of an electric drive. In order to make a favorable use of space available in the motor vehicle, it is desirable to

Control circuits, in particular also boards or circuit boards, which carry a corresponding control electronics to connect to the compressor housing or to integrate.

One difficulty, for example, is that due to pressure fluctuations housing surfaces of the compressor may bend or move. On the mechanical and electronic elements of the

Control electronics should be transferred as possible no bending stress.

Against this background, the object of the present invention is to provide a convenient mounting option for an electronic

To provide drive device for a compressor device on a deformable surface. Accordingly, a drive arrangement for controlling or controlling a

Compressor device having a housing for a compressed fluid proposed. A deformable structural element of the housing is arranged between a first pressure region and a second pressure region of the compressor device. The drive assembly includes an electrical power module, a cooling plate for dissipating heat from the electrical power module thermally coupled to the cooling plate, and a mounting arrangement for the cooling plate. The mounting arrangement has a plurality of spacer elements, which space the cooling plate from the structural element, wherein the spacer elements are arranged such that a

Transmission of the deformation of the structural element on the cooling plate is reduced, in particular prevented.

The power module is in particular part of an electronic

Control device for the compressor device. The control device may include other electronic components, such as Leistungshalbeiter, switches, processors, memory and the like. The electronic

Drive device has in embodiments printed circuit boards or boards with traces, which are protected by means of the mounting assembly and the cooling plate against bending stresses on the one hand and thermal stresses on the other hand.

Preferably, the cooling plate is so spaced by means of the spacer elements of the structural element, that even with a normal operation of the compressor device maximum deformation or curvature of the structural element no additional force application point between the structural element and the cooling plate is formed. This has the advantage that the

Cooling plate - and other mechanically coupled elements - is exposed to no additional bending stress. A deformation in the manner of a curvature of the example planar structural element is then not transferred to the cooling plate, because the deformation of the structural element surface in the axial direction can between the positions of the spacer elements as Evasive movements happen without additional tension in the

Cooling plate can be generated. The cooling plate is in the direction of

Avoidance movement preferably free of inelastic obstacles. The drive arrangement is so far robust and low cost integrated into or on the housing of the compressor device.

The first pressure range is, for example, a low pressure range of a

Compressor, and the second pressure range is an area with

Atmospheric pressure. The structural element can, for example, a

Caseback that deforms due to pressure fluctuations between the pressure present in the interior of the compressor and the external atmospheric pressure, deforms, deforms, bulges or bends. For example, in the operation of the compressor device, a pressure change within the housing from 3 MPa to 8.5 MPa or 30 bar to 85 bar, brought about. The region of the structural element or the housing bottom which deforms, deforms, deforms, bulges or bends due to alternating pressure loading can also be called a "breathing region".

Furthermore, for example, the pressure in the low pressure region when filling the compressor with a refrigerant is almost zero, so that the

Structural element or the housing bottom can also deform, deform, deform, buckle or bend in the "other direction" or inward, since the atmospheric pressure is higher

For example, be subjected to a test pressure of 150 MPa or 15 bar.

In the drive arrangement, the cooling plate is in particular in the axial direction, that is substantially normal to the cooling plate and the surface of the

Structural element, preferably only spaced by the spacer elements. A transmission of the deformation of the structural element on the cooling plate is thereby reduced or prevented at least with respect to a surface attachment of the cooling plate to the housing. The cooling plate can be arranged in particular laterally relative to the spacer elements in particular easily movable. The control arrangement can be designed in such a way that a laterally floating mounting of the cooling plate is possible, that is, there are no stresses in the plane of the cooling plate.

The cooling plate and the particular planar structural element preferably run parallel to one another. Furthermore, the cooling plate is preferably an aluminum plate, Aluniniumoxidplatte, ceramic plate, copper plate, DCB board (Direct Bonded Copper - DCB) or laminate plate. The electrical power module is preferably a module with an insulated-gate bipolar transistor (IGBT) and / or a metal-oxide-semiconductor field-effect transistor.

Thus, the life of the cooling plate and the electronic components and traces can be significantly extended. Preferably, the spacer elements are arranged around a curvature or deformation center such that the spacer elements during the buckling or deforming of the

Structural element are moved symmetrically, so that the cooling plate undergoes only a translational movement. The spacers serve as punctiform support points for the cooling plate. Preferably, the

Spacer elements at a point where the slightest deformation of the

Structural element is expected to be arranged.

The holding plate designed as a cooling plate is preferably made of a

made electrically conductive material, so that in addition to the function of the holder and heat dissipation further electrical shielding takes place. The

Ansteueranordnung satisfies so also safety requirements for

Control electronics in vehicles operating at 12, 48 or more volts as low voltage (up to 60 volts). The spacers are preferably arranged symmetrically about a region of greatest axial or normal deflection of the structural element. Due to the plurality of, for example, symmetrically provided spacer elements, a predetermined distance between the cooling plate and the structural element is kept constant, in particular in the region of the spacer elements. This allows the use of flat

Wärmeleitelementen that can realize a particularly good heat transfer from the cooling plate to the structural element.

In embodiments, the electrical power module for dissipating heat from the electric power module to the cooling plate is arranged on a side facing away from the structural element. Thus, at least between the power module and the structural element

Cooling plate arranged. Consequently, the removal of heat towards the

Structural element can be realized by means of the cooling plate, without buckling or deformation of the structural element the

Mechanically influence the power module.

In embodiments, the drive arrangement comprises at least one

Heat-conducting element which is arranged between the structural element and the cooling plate, so that heat can be dissipated from the cooling plate to the structural element with the aid of the heat-conducting element.

Since the heat-conducting element is additionally arranged between the cooling plate and the structural element, this improves the cooling of the power module. Preferably, the heat-conducting element consists of a more flexible material than the cooling plate and / or the structural element. More preferably, the heat-conducting element is designed to be elastic and / or flexible. The heat-conducting element is for example at least partially made of one

Elastomer made. Furthermore, the heat-conducting element can be applied to the structural element in the form of a gel, jelly or a paste. This can be done for example with the help of a dispenser.

In embodiments, the heat-conducting element has a planar geometry with a, in particular centrally arranged, recess, so that a region of the structural element which experiences the greatest deformation, in the region of

Recess is arranged.

In the present case, the greatest deformation can also be understood as the greatest shaping, curvature or deformation. With the help of the recess, space is created for the structural element, which can extend into the recess during deformation, deformation or curvature. Consequently, a transmission of the deformation of the structural element is suppressed or kept low on the heat conducting element. This has the advantage that the

Heat-conducting element is used gently. Further preferred are

Displacement spaces provided so that the heat-conducting, which is crushed due to the deformation of the structural element, has space to evade. This can be achieved for example by a subdivision of the heat conducting element or creation of additional spaces. Preferably, a part of the structural element extends into the recess.

In embodiments, the heat conduction member has recesses through which the spacers extend.

The provision of the recesses for the spacer elements in the heat-conducting element allows the use of a large heat-conducting element, which is for example longer and / or wider than a distance between the spacer elements. At the same time can be realized relative to the structural element with the help of the recesses a rotation for the heat conducting element. Preferably, the spacer elements extend through the recesses up to the cooling plate.

The one or more heat-conducting elements may be in the form of pads between the cooling plate and the generally flat structural element. The acted upon by a contact force spacers thereby ensure a substantially constant spacing, so that at least in the area, for example around the spacer around a contact between the Päd and the holding plate or cooling plate on the one hand, and the housing bottom or structural element on the other hand guaranteed.

In embodiments, the housing bottom has one or more recesses for receiving one or more heat-conducting elements. In embodiments, the drive arrangement comprises at least one

Spring element, wherein with the aid of the spring element, a contact pressure force is applied from the cooling plate on the spacer elements on the structural element. For example, the spring element is designed as an elastomer spring, in particular with a flat geometry. In this case, the spring element can be arranged in particular on the inside of a housing cover and exert the contact pressure on the rest of the drive arrangement. Preferably, a plurality of spring elements, in particular at least three, are provided. For example, a spring element is provided on a fastening means which fixes the cooling plate with the structural element. The spring element is in particular a plate spring and rests on an upper side of the cooling plate, wherein the structural element in particular has at least one Anschraubdom which extends in particular in a continuous opening of the cooling plate, in particular a fixing, for example a disc, with the aid of a fastening means, eg a screw or a bolt the Anschraubdom is screwed and the cooling plate engages behind, wherein the spring element is biased against the cooling plate and the fixing element.

Alternatively or additionally, the cooling plate by means of an axial

Pressing force held, which in particular by means of a screw-lockable or latchable lid of the compressor device, to the

Structural element is releasably secured, is generated. An axial contact force can be transmitted in particular via further holding means. In particular, both the screw-on dome and the fixing element have a radial clearance within the particular circular opening of the cooling plate, so that slight displacements or movements of the screw-on dome do not induce any stresses in the cooling plate radially to the opening. Thus, the provision of several Anschraubdome would allow in particular small lateral movements between the structural element and the cooling plate. With the aid of the prestressed spring element, the cooling plate is prestressed in the direction of the structural element, so that in particular a pressing or a displacement of the spacer elements due to a deformation,

Deformation, shaping or bending of the structural element by means

Compression of the spring element or the spring elements can be compensated. The bias equally ensures that a stable contact of the cooling plate is ensured on the spacer elements, in particular no axial play between the cooling plate and the spacer elements prevails. The spring element is in particular to be designed so that it the up and

Abbewegung the cooling plate can compensate.

In embodiments, the structural element forms one, in particular

circular, surface and are the spacers arranged symmetrically about a geometric center of the surface.

Preferably, the spacer elements for spacing the cooling plate in the edge region of the cooling plate and the particular circular surface of the Structural element provided. For example, the spacer elements can be provided at regular angular intervals, in particular 120 °, around the center. Thus, a stable bearing surface of the cooling plate can be realized on the spacer elements. Preferably, the geometric center point is the point that experiences maximum deformation during the deformation or curvature of the structural element.

In embodiments, the spacer elements are at least partially cylindrical.

For example, circular cylinders with a height between 0.1 and 2 mm can be provided. The height of the spacer elements specifies at least one distance of the cooling plate to the structural element. In embodiments, the spacer elements are integrally formed on the structural element.

There is then an integral body of structural element and spacers before. The integral body preferably consists of a material. More preferably, the integral body is cast and / or with the help of machining

Manufacturing process produced. Consequently, the spacers do not have to be positioned, aligned or fixed in a complex assembly process. In embodiments, the spacer elements are integrally formed on the cooling plate. Then there is an integral body of spacers and cooling plate.

There is also proposed a mounting arrangement for a cooling plate on a deformable structural element, which is arranged between a first pressure region and a second pressure region of a compressor device, wherein the cooling plate for dissipating heat from an electrical power module, which is thermally coupled to the cooling plate, is arranged, wherein with the aid of a plurality of spacer elements, the cooling plate is spaced from the structural element, wherein the spacer elements are arranged such that a transmission of the deformation of the structural element is suppressed on the cooling plate.

It is also proposed a compressor device with a drive arrangement, as described above or below, a housing part, which comprises a housing bottom as a structural element, wherein the housing bottom a first pressure range of a second

Pressure region, which has a lower pressure than the first pressure region, separates, wherein the cooling plate is fixed to the low pressure side to the housing bottom in the axial direction by means of the fastening arrangement.

For example, the pressure difference can be between 3 and 8.5 MPa, so that in the case of a compressor the housing bottom can be curved by a few tenths of a millimeter during operation. Bending of the cooling plate is, however, avoided by the drive arrangement or mounting arrangement. The compressor device is configured, for example, to compress CO2 or CFC (chlorofluorocarbon). In embodiments, this is a refrigerant compressor for CO2 as a coolant,

In embodiments, the housing bottom has a positioning aid, a

Centering device and / or an anti-rotation device for the cooling plate. This simplifies the manufacture and manufacture of the compressor device. Furthermore, a floating attachment is made possible in which in particular a lateral movement relative to the spacer elements.

In embodiments, the compressor device has a low pressure area for collecting fluid to be compressed and a high pressure area in which compressed or compressed fluid is held. In embodiments, the structural element as housing bottom separates the low-pressure region from the atmospheric pressure present outside the compressor device. In the low pressure chamber, the fluid is usually much cooler than in the

High pressure area, so that the housing bottom can serve better than in an arrangement of the cooling plate on a housing wall bounding the high pressure area of the cooling.

There is also a method of attaching a cooling plate to a

deformable structural element, which is arranged between a high pressure region and a low pressure region of a compressor device proposed. In this case, the cooling plate is spaced by means of spacer elements of the structural element. The method uses in particular a drive arrangement as described above, or a

Mounting arrangement as described above, or a

Compressor device as described above. In embodiments, the structural element is arranged to move less away from a zero level due to a pressure increase in areas where the spacers are located than in an area between the spacers. For example, the structural element bulges in a region between the spacer elements due to a

Pressure rise.

In embodiments, the drive arrangement, mounting arrangement or compressor device comprises a printed circuit board, in particular a printed circuit board. The power module may be arranged between the cooling plate and the circuit board but also on the cooling plate and the structural element facing away from the circuit board. Thus, a transfer of the deformation of the structural element is suppressed on the circuit board by means of the cooling plate and its attachment. In embodiments, in particular at the center or a

predetermined area around the center, which is often one particular strong axial deflection is exposed by a deformation of the structural element, no spacer provided for fixing the cooling plate.

In alternative embodiments of the fastening arrangement and / or the drive arrangement, the cooling plate is replaced by a holding plate. Then, the support plate only optionally has a heat-dissipating function and serves mainly as holding or support elements for the electronic components and / or a printed circuit board or circuit board. In one embodiment, the housing bottom has a pressure-tight passage for at least one connecting line from the first pressure region to the second pressure region to the holding plate or cooling plate.

Preferably, there are no further fastening means, so that even with a deformation of the structural element, the holding plate or cooling plate practically always maintains its planar shape. It can be said that the holding plate or cooling plate is attached to the particularly flat structural element

kept floating or stored. In embodiments, the structural element is for example a

Caseback of an air conditioning compressor running out of a well

thermally conductive material is made. It is conceivable, for example, a

Aluminum material, stainless steel or a composite material. Furthermore, the structural element may additionally have a cooling function, because in the second

Pressure range present refrigerant usually below the

Operating temperatures of the power semiconductor is. For example, line semiconductor chips develop temperatures between 100 and 150 ° C while the refrigerant in the compressor is well below 60 ° C. The ones described for the proposed drive arrangement

Embodiments and features apply to the proposed

Mounting arrangement, the proposed compressor device and the Proposed methods accordingly. Likewise, the embodiments and features of the proposed compressor device apply to the

Mounting arrangement, drive arrangement and the method. Further possible implementations of the invention also include not explicitly mentioned combinations of features or embodiments described above or below with regard to the exemplary embodiments. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further advantageous embodiments and aspects of the invention are

Subject matter of the subclaims and those described below

Embodiments of the invention. Furthermore, the invention will be explained in more detail by means of preferred embodiments with reference to the attached figures.

Fig. 1 shows a highly simplified sectional view of a first

Embodiment of a drive arrangement; Fig. 2 shows a simplified sectional view of a second embodiment of the drive arrangement;

FIG. 3 shows the drive arrangement according to FIG. 2 in a perspective view

Presentation;

Fig. 4 shows a plan view of a structural element with a

thermally conductive element;

Fig. 5 is a perspective view of a heat conduction member;

Fig. 6 shows a perspective view of a cooling plate with a

Power module; and Fig. 7 shows a perspective view of a printed circuit board.

In the figures, identical or functionally identical elements have been given the same reference numerals, unless stated otherwise.

In Fig. 1 is a highly simplified sectional view of a first

Embodiment of a drive arrangement 1. The drive arrangement 1 is suitable for regulating or controlling a compressor device which has a housing for a compressed fluid and wherein the fluid is compressed by means of an electric drive. The drive arrangement 1 couples via a cooling plate 2 electronic components, such as an electric power module 3 and conductor tracks (not shown) to a particular elastically deformable structural element 4 of the compressor device by means of spacer elements 5, which space the cooling plate 2 from the surface 4A of the structural element 4. The structural element 4 is, for example, a housing bottom of a compressor housing for receiving compressed fluid. The

Compressor device, for example, in an electric or

Hybridfahrzug be used and operated with a voltage of 100 to 400 volts or 400 to 1000 volts. Preferably, the application range is above the low voltage. The cooling plate 2 may alternatively as a holding plate for electronic components and / or a board of an electronic

Be configured drive for the compressor drive. In Fig. 1 shows the deformable structural element 4, which has a flat geometry and, for example, the housing bottom of a

Compressor device can be. The, in particular elastically deformable, structural element 4 is arranged between an atmospheric pressure region P and a low pressure region N and separates them from one another. Of the

Low pressure region N has a higher pressure than atmospheric pressure during operation of the considered compressor device. The cooling plate 2 has a

Bottom 2A and a top 2B, wherein the cooling plate 2 at the top 2B for dissipating heat from the electric power module 3 is thermally coupled thereto. Similarly, the structural element 4 has an upper side 4A, which faces the underside 2A of the printed circuit board 6, wherein the

Distance elements 5 between the bottom 2A and the top 4A are located, and a bottom 4B, which is directed to the printing area N. Due to the pressure difference, the structural element 4 can bulge or deform from a starting position. This is indicated by the dashed representation of the top 4A 'and bottom 4B'. The cooling plate 2, the electric

Power module 3 and the spacer elements 5 are not deformed, curved or deformed and are indicated by dashed outlines to the behavior of the drive assembly 1 during the deformation or buckling of the

Structure element 4 to illustrate.

So that the cooling plate 2 is not exposed to the same deformation or curvature, a mounting arrangement for the cooling plate 2 with the plurality

Distance elements 5 are provided, which space the cooling plate 2 of the structural element 4, wherein the spacer elements 5 are arranged such that a transfer of the deformation or curvature of the structural element 4 is largely prevented on the cooling plate 2 but at least reduced. The spacer elements 5 are for example such a deformation, a

Curvature, a Völbungshochpunkt or center of curvature arranged that they move the cooling plate 2 during the corresponding movement due to the deformation preferably only translational and the cooling plate 2 is not exposed to any additional bending or tension. Accordingly, the drive arrangement 1 is designed with respect to the spacing such that at maximum deformation, deformation, shaping or bending of the structural element 4, e.g. during operation of the compressor device, no additional pressure point between the structural element 4 and the cooling plate 2 is formed. It is in particular a use of the drive arrangement 1 in one

Compressor arrangement, such as an air conditioning compressor for motor vehicles, possible. FIGS. 2-7 show several illustrations of an embodiment of a compressor device 23 with a drive arrangement in which a cooling plate is fastened as a holding plate by means of a fastening arrangement. 2 and 3, a section of a compressor device 23 is shown in cross section. FIG. 4 essentially shows a plan view of one

Case bottom top, Fig. 5 is a perspective view of a

Wärmeleitpads, and Fig. 6 shows a part of the compressor device from an oblique perspective view on the top of the cooling plate. Fig. 7 is a perspective view of a circuit board.

FIG. 2 shows a simplified sectional view of a second embodiment of the drive arrangement 1. In contrast to FIG. 1, the drive arrangement 1 comprises a heat-conducting element 7 which is arranged between the structure element 4 and the

Cooling plate 2 is arranged so that heat from the cooling plate 2 to the

Structural element 4 with the aid of the heat-conducting element 7 can be discharged. The

Heat-conducting element 7 has a planar geometry with a centrally arranged recess, so that a region of the structural element 4 which undergoes the greatest deformation is arranged in the region of the recess. Furthermore, the heat-conducting element 7 recesses, through which the spacer elements 5 extend, which are integrally formed on the structural element 4, so that a

one-piece integral body 4, 5 of structural element 4 and spacer elements 5 is present. The upper side of the integral body 4, 5 is at least partially formed as a negative shape of the heat-conducting element 7.

Furthermore, the drive arrangement 1 has at least one spring element 8, wherein with the aid of the spring element 8 a contact pressure force is applied from the cooling plate 2 via the spacer elements 5 to the structural element 4. The

Spring element 8 is in particular a plate spring and rests on a top side 2B of the cooling plate 2, wherein the structural element 4 at least one

Anschraubdom 9, which is in a continuous opening 10 of

Cooling plate 2 extends, wherein a fixing element 11, in particular a disc, is screwed by a screw 12 to the Anschraubdom 9 and the cooling plate 2 engages behind, wherein the spring element 8 is biased against the cooling plate 2 and against the fixing element 11. Both the Anschraubdom 9 and the fixing element 11 have a radial clearance within the particular circular opening 10, so that slight displacements or movements of the Anschraubdoms 9 radially to the opening 10 induce no tension in the cooling plate 2. Thus, the provision of multiple Anschraubdome 9

allow in particular slight lateral movements between the structural element 4 and the cooling plate 2. With the help of the prestressed spring element 8, the cooling plate 2 is biased in the direction of the structural element 4, so that a pressing or a displacement of the spacer elements 5 due to deformation, deformation, shaping or bending of the

Structural element 4 by means of compression of the spring element 8 and der

Spring elements 8 can be compensated. The bias is

equally sure that a stable resting of the cooling plate 2 on the

Distance elements 5 is ensured, in particular no axial play between the cooling plate 2 and the spacer elements 5 prevails.

In Fig. 2, only one spacer 5 is shown, with the other

Distance elements 5 are located in other cross-sectional planes of the drive arrangement 1 or are not visible in the plane shown. The

Heat-conducting element 7 consists in particular of a more flexible material than the structural element 4 and / or the cooling plate 2 and / or is in particular a heat-conducting pad. Preferably, the heat-conducting element 7 is made of a flexible and / or elastic material.

FIG. 3 shows the drive arrangement according to FIG. 2 in a perspective illustration. In order to prevent damage to the electric power module 3 and the circuit board or printed circuit board or board 6, these were mounted on the cooling plate 2. Between the cooling plate 2 and the housing bottom 4, that is Wärmeleitelement 7 as a Wärmeleitpad, mounted. The heat-conducting element 7 requires a defined distance to the housing bottom 4, which is filled by the material of the heat-conducting 7. As a result, the resulting heat in the electric power module 3 or transmitted from the board 6 via the cooling plate 2 on the housing bottom 4. The housing bottom 4 is cooled by the refrigerant located in the pressure chamber N.

4 shows a plan view of a structural element 4 with a heat-conducting element 7. There are three spacer elements 5 and three screw-on domes 9 on

Structural element 4 arranged around a center M at an angular distance of 120 °. In order to ensure a uniform support and movement of the cooling plate 2 with the structural element 4, in particular the housing bottom, the spacer elements 5 are distributed symmetrically about the center of the deflection of the structural element 4, in particular of the housing bottom. In the middle of the structural element 4, the heat-conducting element 7 has been recessed, since at this point 15, the up and down movement of the structural element 4, in particular of the housing bottom, due to changing pressure load is greatest.

Furthermore, the structural element 4 or the housing bottom has four

Fixing elements 22, which are arranged radially outwardly at an angular distance of 90 ° and as a positioning aid for the cooling plate 2, to the

Fixing elements 22 corresponding omissions 21, are provided. The fixing elements 22 are designed in particular as fixing mandrels and extend in the axial direction, that is to say essentially normal to the cooling plate 2 in the installed position.

5 shows a perspective view of the heat-conducting element 7 from FIG. 4. The heat-conducting element 7 has an annular geometry. Furthermore, the heat-conducting element 7 recesses (of which only one is provided with reference numeral 16) for the cylindrical spacers 5 and at least partially for the cylindrical Anschraubdome 9. The recesses 16 for the spacer 5 have an angular distance of 120 ° with each other on. The recesses 17 for the Anschraubdome 9 also have one

Angular distance of 120 ° and correspond in the radial direction in each case with a recess 16 for one of the spacer elements 5, but are radially further outward.

Fig. 6 shows a perspective view of a cooling plate 2 with a

electronic IGBT power module 3. The electric power module 3 is mounted by means of a screw 13 and tabs 20 to the cooling plate 2. Furthermore, four Anschraubdome 14 for the attachment of

Printed circuit board 6 is provided on the cooling plate 2. The omissions 21 are at least partially formed as a negative form of the fixing elements 22, so that the cooling plate 2 can rest on the structural element 4 in a form-fitting and torsion-proof manner as soon as the fixing elements 22 engage in the openings 21. The omissions 21 are formed as slots.

Fig. 7 shows a perspective view of a printed circuit board 6. The printed circuit board 6 is mounted on the electrical power module 3 and contacted with this. The electric power module 3 is connected to the circuit board 6, for example, a circuit board or printed circuit as a carrier for electronic components 18 of the corresponding drive circuit connected. One also speaks of a printed circuit board, printed circuit board, PCB or PCB (English: Printed Circuit Board). In order to achieve the screw connection 14 (cf., FIG. 6), handling openings 20 are provided in the printed circuit board 6. The drive circuit or drive device for the corresponding

Air conditioning compressor is on a printed circuit board 6 using electronic

Components 18 in particular with the aid of power semiconductors. 3

implemented. The board or printed circuit board 6 has in the illustration of FIG. 7 on the upper side electrical components 9. Further, the underside of the

Power semiconductors or modules 2 (hidden) arranged, which can develop temperatures between 100 and 150 ° C. Although the present invention has been described in terms of some embodiments, it is modifiable. In particular, the number of spacer elements can be varied. It is also possible to achieve the contact pressure by other, for example, resilient elements. Furthermore, the shape and geometry of the housing bottom is not necessarily circular. Also oval or other shapes are conceivable. The structural element need not necessarily be a housing bottom of the compressor device. Furthermore, the materials and dimensions mentioned are variable and can be adapted to the respective installation situation of a structural element or a compressor device. The pressure indications may also vary and depend on the refrigerant compressed by means of the compressor device.

LIST OF REFERENCE NUMBERS

1 drive arrangement

2 cooling plate

2A bottom

2B top

3 electrical power element

4 structural element

4A top

4B bottom

5 spacers

6 circuit board

7 heat-conducting element

8 spring element

9 screw-on dome

10 opening

11 fixing element

12 screw

13 screw connection

14 screw-on dome

15, 16, 17 recess

18 electronic component

19 handling opening

20 fastening strap

21 omissions

22 fixing elements

23 compressor device

Low pressure area center point

Atmospheric pressure range

Claims

1. drive arrangement (l) for controlling or controlling a

A compressor device (23) having a housing for a compressed fluid, wherein a deformable structural element (4) of the housing between a first pressure region (N) and a second pressure region (P) of

Compressor device (23) is arranged with

an electric power module (3),

a cooling plate (2) adapted to dissipate heat from the electric power module (3) thermally coupled to the cooling plate (2), and

a mounting arrangement for the cooling plate (2) with a plurality

Spacer elements (5) which space the cooling plate (2) from the structural element (4), wherein the spacer elements (5) are arranged such that a transmission of the deformation of the structural element (4) is reduced to the cooling plate (2).

2. Control arrangement according to claim 1, wherein the electrical

Power module (15) for dissipating heat from the electrical

Power module (15) to the cooling plate (2) on a side facing away from the structural element (4) (2A) is arranged.

3. Control arrangement according to claim 1 or 2, with a heat conducting element (7) which is arranged between the structural element (4) and the cooling plate (2), so that heat from the cooling plate (2) to the structural element (4) by means of the heat conducting element (7) is deductible.

4. Control arrangement according to claim 3, wherein the heat-conducting element (7) has a planar geometry with a, in particular centrally arranged, recess (15), so that a region of the structural element (4) which undergoes the greatest deformation, in the region of the recess (15 ) is arranged.

5. Control arrangement according to claim 3 or 4, wherein the heat-conducting element (7) has recesses (16) through which the spacer elements (5) extend.

6. Drive arrangement according to one of claims 3 to 5, wherein the

Heat-conducting element (7) consists of a more flexible material than the cooling plate (2) and / or the structural element (4).

7. Drive arrangement according to one of claims 1 to 6, with at least one spring element (8), wherein by means of the spring element (8) a contact pressure of the cooling plate (2) via the spacer elements (5) on the structural element (4) is applied.

8. Drive arrangement according to claim 7, wherein the spring element (8) on an upper side (2B) of the cooling plate (2) rests, wherein the structural element (4) has at least one Anschraubdom (9), which in a continuous opening (10) of Cooling plate (2) extends, wherein a fixing element (ll) by means of a screw (12) is screwed to the Anschraubdom (9) and the

Cooling plate (2) engages behind, and wherein the spring element (8) against the cooling plate (2) and against the fixing element (ll) is biased.

9. Drive arrangement according to one of claims 1 to 8, wherein the

Structural element (4) forms a, in particular circular, surface and the spacer elements (5) are arranged symmetrically about a geometric center (M) of the surface.

10. Drive arrangement according to one of claims 1 to 9, wherein

the spacer elements (5) are at least partially cylindrical in shape and / or are formed on the structural element (4) and / or are formed on the cooling plate (2).

11. Drive arrangement according to one of claims 1 to 10, wherein the

Structural element (4) is adapted to move away less from a zero level due to a pressure increase in areas in which the spacer elements (5) are arranged as in an area between the

Spacer elements (5).

12. Control arrangement according to one of claims 1 to 11, with a

Printed circuit board (6), wherein the power module (3) between the cooling plate (2) and the circuit board (6) is arranged.

13. A mounting arrangement for a cooling plate (2) on a deformable structural element (4) which is arranged between a first pressure region (N) and a second pressure region (P) of a compressor device, wherein the cooling plate (2) for dissipating heat from an electric Power module (3), which is thermally coupled to the cooling plate (2) is arranged, wherein with the aid of a plurality of spacer elements (5), the cooling plate (2) from the structural element (4) is spaced, wherein the spacer elements (5) arranged in such a manner are that a transfer of the deformation of the structural element (4) is suppressed on the cooling plate (2).

14. Compressor device (23) with a drive arrangement according to one of claims 1 to 12, a housing part, which comprises a housing bottom (4) as a structural element, wherein the housing bottom (4) has a first

Pressure range (N) of a second pressure region (P), which has a lower pressure than the first pressure region (P) separates, wherein the cooling plate (2) low pressure side to the housing bottom (4) in the axial direction by means of the fastening arrangement is attached.

15. A method for driving a compressor device, wherein a cooling plate (2) on a deformable structural element (4) is fixed, which between a high-pressure region and a low pressure region (N) of the compressor device (23) is arranged, wherein the cooling plate (2) Distance from the spacer elements (5) from the structural element (4) is spaced, and wherein the spacer elements (5) are arranged such that a

Transmission of the deformation of the structural element (4) on the cooling plate (2) is reduced.

16. The method of claim 15, wherein the compressor device (23) is configured according to claim 14.