FR3065838A1 - CONTROL MODULE FOR ELECTRIC COMPRESSOR - Google Patents

Abstract

A control module of an electric compressor comprising at least one electronic card (22) and at least one electrical connection lug (16) secured to the electronic card (22), this electronic card (22) comprising at least one device ( 300) limiting a rotation of the electrical connecting lug (16), characterized in that the device (300) limiting the rotation of the electrical connection lug (16) is formed in an edge (31) of the electronic card (22). ).

Description

(54) A control module of an electric compressor comprising at least one electronic card (22) and at least one electrical connection terminal (16) secured to the electronic card (22), this electronic card (22) comprising at least a device (300) limiting a rotation of the electrical connection terminal (16), characterized in that the device (300) limiting the rotation of the electrical connection terminal (16) is formed in an edge (31) of the card electronic (22).

41

CONTROL MODULE FOR ELECTRIC COMPRESSOR

The field of the present invention relates to electric compressors equipping air conditioning installations for motor vehicles. More particularly, the invention relates to a conformation of an electronic card of a control module for a motorization of such an electric compressor.

The air conditioning systems of motor vehicles include a closed air conditioning circuit inside which a coolant circulates. Successively, depending on the direction of flow of the refrigerant through it, the air conditioning circuit essentially comprises a compressor, a condenser, a pressure reducer and an evaporator.

The compressor includes an axially extended housing of generally cylindrical conformation. The housing is provided with an inlet mouth through which the fluid is admitted at low pressure inside the housing. The fluid then flows through the housing from the inlet mouth to a compression mechanism for the refrigerant. An outlet mouth is in communication with the compression mechanism for the evacuation of the high pressure fluid out of the housing, following its compression.

The compression mechanism is rotated by a motor whose implementation is regulated by a control module. The motorization and the control module are embedded inside the housing in two separate cavities separated by a sealed wall. A first cavity houses the motorization which then bathes in the refrigerant, while the control module is in turn housed in a second cavity which must be sealed relative to the first cavity. This motorization can for example be a three-phase electric motor, in which case the sealed wall is crossed by three pins connected on one side to the electric motor which extends in the first cavity and on the other to an electronic card of the control module disposed in the second cavity, via lugs.

It is known to use a monolithic connector grouping three lugs in order to allow the electrical connection of the three pins to the control module. A drawback of these connectors lies in the complexity of simultaneously connecting three pins to three lugs, in particular since it is difficult to align the pins on the lugs, in a single positioning operation.

Another drawback lies in the need to pre-assemble this monolithic connector on the electronic card before fixing it in the second cavity of the compressor. Such a process further complicates the mounting of the card equipped with its monolithic connector, since, in addition to managing the alignment of lugs / pins, it is also necessary to manage the alignment of the electronic card in the second cavity, in particular at with regard to its fixing points. It will therefore be understood that the connection of the electronic card to the pins of the motor is complex to carry out, which results in too long an assembly time and risks of generation of electrical connection faults.

The present invention is part of this context and aims to simplify these steps of mounting and electrical connection of the electronic card of the control module with the pin or pins which pass through the wall disposed between the two cavities of the electric compressor.

The object of the present invention thus relates to a control module of an electric compressor comprising at least one electronic card and at least one electrical connection lug secured to the electronic card, this electronic card comprising at least one device limiting a rotation of the electrical connection terminal. According to the invention, the device limiting the rotation of the electrical connection terminal is arranged in an edge of the electronic card.

According to the present invention, it is thus possible to connect each of the electrical connection lugs independently of the others, while limiting the forces and movements during assembly which can be damaging for the electronic card and / or the electrical connection lugs.

According to the present invention, the device limiting the rotation of the electrical connection terminal can comprise at least one notch which originates from an edge of the electronic card and which encroaches on this electronic card, a portion of the electric connection terminal. extending into this notch.

According to a characteristic of the present invention, the electrical connection lug comprises a first end having a bore configured to allow embedding of a pin electrically connected to an electric motor of the electric compressor and a second end in which is formed an orifice configured for allow to secure the electrical connection terminal on the electronic card, this first end and this second end being interconnected by a central portion having at least two successive folds.

According to the invention, each notch in the electronic card is delimited by two side walls and a bottom wall.

According to the invention, the central portion of the electrical connection terminal has a width less than a width of the notch. The side walls of the notch are therefore not necessarily in contact with this central portion but allow an anti-rotation contact, in particular when tightening the electrical connection terminal on the electronic card. This anti-rotation contact makes it possible in particular to limit the forces and movements applied to the spindle during assembly which can be damaging for the spindle which passes through the wall. Indeed, the rotational force is taken up by the terminal bearing on the edge of the electronic card, rather than by the pin.

The width of the central portion of the electrical connection terminal is measured between two sections of this central portion and the width of the notch is measured between two side walls of this notch.

It is thus understood that the side walls partially delimiting a notch each block a direction of rotation of the electrical connection terminal.

According to a characteristic of the present invention, the first end of the electrical connection terminal and the second end of this electrical connection terminal are arranged on either side of the electronic card.

This electronic card is part of a main extension plan, the first end of the electrical connection lug then being arranged below this extension plan and the second end of this electrical connection lug being arranged above this extension plan. Thus, it is understood that the first end of the electrical connection lug and the second end of this electrical connection lug are arranged on either side of the extension plane and therefore on either side of the electronic card.

According to the present invention, the electronic card can comprise at least one threaded insert integral with this electronic card, the threaded insert participating in the connection of the electrical connection terminal on the electronic card. Advantageously, the electronic card according to the present invention comprises as many threaded inserts as there are electrical connection lugs fixed to this electronic card.

According to an embodiment of the present invention, the edge of the electronic card in which the device limiting the rotation of the electrical connection terminal is formed delimits a recess formed in the electronic card. In other words, a recess is formed in the electronic card and has a closed contour in which the device limiting the rotation of the electrical connection terminal is formed.

According to another embodiment of the present invention, the edge of the electronic card in which the device limiting the rotation of the electrical connection terminal is formed is a peripheral edge of this electronic card. In other words, according to this other embodiment, the electronic card has a recess in which the device limiting the rotation of the electrical connection terminal is formed.

According to the present invention, the electronic card can have a plurality of devices each limiting the rotation of an electrical connection terminal.

According to an exemplary embodiment of the present invention, the electronic card then comprises a plurality of notches formed in one edge of the electronic card, this edge delimiting a recess. According to this exemplary embodiment of the present invention, a recess is formed in the electronic card and has a closed contour in which the plurality of notches are formed.

According to another exemplary embodiment of the present invention, the electronic card comprises a plurality of notches formed in a plurality of edges of the electronic card, each of these edges delimiting a recess. According to this other exemplary embodiment, the electronic card thus has a plurality of recesses, each of these recesses having a closed contour in which is formed at least one notch. Two successive recesses are partly delimited by a common edge. On the same electronic card, the notches can be arranged so that the electrical connection lugs, the central part of which is housed in these notches, are secured to said electronic card in the same direction, or in a head-to-tail alignment. .

According to a characteristic of the present invention, the electronic card comprises at least one electrical connection pad and has at least one fixing hole made through this electrical connection pad, this fixing hole being configured to allow the terminal to be fixed. electrical connection on this electronic card.

According to a characteristic of the present invention, the electronic card can comprise a plurality of electrical connection pads, each of these electrical connection pads being made opposite a bottom wall of a notch, in the extension of this notch.

According to this embodiment, each notch extends along a main axis and each electrical connection pad is then arranged in the extension of one of these notches, along this main axis.

The threaded inserts secured to the electronic card according to the present invention are secured to this electronic card at the level of these electrical connection pads. More specifically, a threaded insert is secured opposite each electrical connection pad.

The present invention also relates to an electric compressor comprising a housing delimiting a first cavity housing at least one compression mechanism of a refrigerant fluid and at least one electric motor, and a second cavity housing at least one control module of this electric motor according to the present invention, these two cavities being separated by a wall traversed by at least one pin electrically connected to the electric motor on the one hand and to an electronic card on the other hand.

The first cavity of the electric compressor housing houses the compression mechanism of the refrigerant and the electric motor which then both bathe in said refrigerant. The second cavity of this box houses the control module of the electric motor which includes fragile electronic components. This second cavity must therefore remain sealed relative to the first cavity. The wall separating the two cavities is therefore a sealed wall which makes it possible to prevent the refrigerant present in the first cavity from passing to the second cavity, thus risking damaging the control module.

Other characteristics, details and advantages of the present invention will emerge more clearly on reading the detailed description given below for information, in relation to the various embodiments illustrated in the following figures:

- Figure 1 is a schematic representation of an electric compressor comprising at least one control module according to the present invention;

- Figure 2 is a perspective view of an electrical connection terminal adapted to be fixed to an electronic card of a control module according to the present invention;

- Figure 3 is a perspective representation of a portion of electronic card according to a first embodiment of the present invention;

- Figure 4 is a perspective representation of a connection area between the electronic card according to the present invention and a pin of an electric motor of the electric compressor illustrated in Figure 1;

- Figure 5 is a bottom view of a portion of the electronic card according to a second embodiment of the present invention on which are fixed electrical connection lugs.

In FIG. 1 is illustrated a compressor 1 organized to equip an air conditioning installation equipping a motor vehicle. The compressor 1 comprises a housing 2 having a general cylindrical conformation, extending along a longitudinal axis XL. Such a compressor is an electric compressor, that is to say the compression of which is effected by electric means.

The housing 2 comprises an inlet mouth 3 and an outlet mouth 4 for a cooling fluid, the latter circulating in the housing 2 from the inlet mouth 3 towards the outlet mouth 4 along and / or in components installed inside the housing 2.

This housing 2 delimits at least a first cavity 11 in which extends a compression mechanism 5 which compresses the refrigerant. The compression mechanism 5 is implemented, via a drive shaft 6, by an electric motor 7, received in the first cavity 11, inside the housing 2. The compression mechanism 5 is for example at compression mechanisms with spirals, one of the spirals being fixed while the other spiral oscillates.

This electric motor 7 is electrically powered and regulated by a control module 8 via an electrical connection 9. The control module 8 is disposed in a second cavity 10 of the housing 2 separated from the first cavity 11 by at least a wall 12 through which the electrical connection 9 passes. This electrical connection 9 is produced by at least one pin 14 connected to the electric motor 7 in the first cavity 11 and to the control module 8 in the second cavity 10.

According to the embodiment illustrated in FIG. 1, the electric motor 7 can for example be a three-phase electric motor, the electric connection 9 then being produced by three pins 14 each connected by a first end to the electric motor 7, and by a second end, to the control module 8. It is understood that these pins 14 are not directly connected to the electric motor 7 or to the control module 8 and that intermediate parts allow this connection.

The second cavity 10 is here for example formed in the extension of the compression mechanism 5 and of the electric motor 7 along the longitudinal axis XI of the housing 2, the electric motor 7 being disposed longitudinally between the compression mechanism 5 and the module 8. The control module 8 is an electronic device configured at least to transform a direct current coming from the vehicle into an alternating current adapted to actuate the electric motor 7.

The second cavity 10 comprising the control module 8 must necessarily contain a controlled atmosphere, devoid of any body or element liable to damage the control module 8, in particular control electronics and / or power electronics constituting it. The control module 8 thus comprises at least one electronic card 22 having first electronic components dedicated to the management of the power supplied to the electric motor 7 and second electronic components dedicated to the management of control, signal and / or compressor 1 diagnostic.

The housing 2, in particular the second cavity 10, is closed by a cover 13, the latter being a means of closing the second cavity 10. Along the longitudinal axis XI of the housing 2, the control module 8 is installed in the second cavity 10 and its electrical connection with the external environment to the compressor 1 occurs by passing, for example, through the cover 13. This arrangement facilitates the electrical connection of the control module 8 to the outside of the housing 2, that is that is to say to an electrical supply bundle 15 belonging to the vehicle in which the electric compressor 1 is integrated.

Figures 1 and 2 illustrate an embodiment of an electrical connection lug 16 allowing the connection between the control module 8 according to the present invention and the electric motor 7 of the electric compressor 1. More specifically, this electrical connection lug 16 allows a connection to be made between the electronic card 22 of the control module 8 and a pin 14 which extends along a line of extension Dl and which passes through the wall 12.

In FIG. 2, the electrical connection terminal 16 according to the invention extends along a longitudinal direction D2 and has a first end 17, a second end 18 as well as a central portion 19 having at least two folds 25 , 26 described below.

This electrical connection terminal 16 according to the present invention comprises the first end 17 which has a bore 20 delimited at least by two flanks 21 and configured to allow fitting of at least one pin passing through the partition wall of the cavities of the compressor, thus that a second end 18 in which is formed an orifice 23 configured to allow the screwing of this electrical connection lug 16 on or against the electronic card of the control module.

This orifice 23 can have an oblong or circular shape and it can also be centered or offset with respect to an outer peripheral edge which delimits the second end 18 of the electrical connection terminal 16.

According to the embodiment of the present invention illustrated in Figure 2, the second end 18 of the electrical connection lug 16 may have a closed circular shape. Thus the orifice 23 through which the electrical connection terminal 16 will be screwed onto the electronic card of the control module can be delimited by an annular contour 43 which is regular and smooth.

According to another alternative embodiment of the present invention not illustrated here, the annular contour 43 of the second end 18 of the electrical connection terminal 16 may have an opening, this second end 18 then having, seen from above, an iron shape on horseback.

The electrical connection terminal 16 also includes the central portion 19 connecting the first end 17 to the second end 18 and having at least two sections 42.

According to the embodiment illustrated in FIG. 2, this central portion 19 comprises at least two successive folds 25, 26. These folds 25, 26 are produced in opposite directions and may each have an identical angle with respect to each other so that the first end 17 and the second end 18 extend in distinct and parallel planes . These successive folds 25, 26 may for example each have an angle equal to or substantially equal to 90 °.

The angle formed by a first fold 25 is measured between a first plane in which the orifice 23 formed in the second end 18 is registered and a second plane in which the two sections 42 of the central portion 19 are inscribed.

The angle formed by a second fold 26 is measured between this second plane and a third plane in which is inscribed an upper face 27 of the first end described below.

The first fold 25 emerges from the second end 18 while the second fold 26 emerges from the first end 17.

These folds 25, 26 make it possible to obtain a form of S which takes account of the difference in positions between the spindle of the electric motor and the electronic card 22. In addition, this form of S can also be a vibration decoupling zone. In other words, these folds 25 can be configured to absorb the vibrations linked to the operation of the electric motor during use in a motor vehicle. Thus, this form of S provides flexibility between two rigid attachment points, thus limiting any movement of the first end 17 along the pin embedded in the bore 20.

According to the present invention, the first end 17 and the second end 18 of the electrical connection terminal 16, as well as the central portion 19 carrying the folds 25, 26, can form a single piece, made of an electrically conductive material.

The first end 17 arises at the level of the second ply 26 therefore having an inverted U shape comprising the upper face 27, and the two sides 21. This first end 17 can moreover have a first width L1 greater than a second width L2 of the central portion 19.

The first width L1 is measured between the two sides 21 of the first end 17 while the second width L2 is measured between two opposite edges of the central portion 19.

The upper face 27 is regular and continuous over a first portion 44 of the first end 17 and has a slot 45 on a second portion 46 of this first end 17. This second portion 46 of the first end 17 also has the bore 20 formed opposite the light 45 and delimited by the sides 21. It is understood here that the bore 20 is through, opening above and below the first end 17.

The sidewalls 21 respectively have an internal face 210 facing the bore 20 and an external face 211 opposite this internal face 210, that is to say facing towards the outside of the electrical connection terminal 16. Each of these sidewalls 21 may also include a folded edge 24 arranged at its internal face 210.

Thanks to these folded edges 24, the bore 20 has a larger opening 45 on a lower face 47 than on the upper face 27. It is then understood that these folded edges 24 facilitate the insertion of the spindle of the electric motor into the bore 20.

The sidewalls 21 are also configured to adjust the distance which separates them so as to be able to grip the spindle passing through the sealed wall of the compressor in a mounted-tight configuration. Thus, when the spindle is penetrated into the bore 20, for example by the underside 47 of this bore 20, these flanks 21 move apart, allowing its insertion, and then tend to resume their initial configuration, ensuring a mechanical engagement of the spindle in the bore 20. This flexibility of the sides 21 is effected by the presence of the opening 45 and the opening made in the lower face 47, bordered by the folded edges 24.

Each of the flanks 21 has at least one aperture 48 which allows deformation of these flanks 21.

According to an exemplary embodiment, each of the sides 21 may have several openings 48 formed symmetrically with respect to the longitudinal direction D2. Each side 21 can thus for example have two first openings 48 symmetrical to two second openings 48 formed on the other side 21.

Each of the sides 21 can also have an arm 49 folded towards the other side 21 as for example illustrated in FIG. 2. These arms 49 folded make it possible to maintain the distance which separates the sides 21 between two predetermined maximum values, and in particular during and after embedding the spindle in the bore 20 produced between these sides 21.

Figures 3 and 4 illustrate a first embodiment of the electronic card 22 of the control module and Figure 5 is itself a schematic representation of this electronic card 22 according to a second embodiment of the present invention. To facilitate understanding of the drawings, these figures illustrate only a portion of this electronic card 22, in this case the portion of this electronic card 22 on which the electrical connection lugs 16 are intended to be fixed.

FIG. 3 represents this portion of the electronic card 22 devoid of electrical connection lug, while FIGS. 4 and 5 represent this same portion of the electronic card 22 on which the electrical connection lugs 16 are fixed, these electrical connection lugs 16 being shown connected to pins 14 only in FIG. 4.

According to these two embodiments, the electronic card 22 has a device 300 limiting a rotation of the electrical connection lug 16, in particular when it is attached to the electronic card 22. This device 300 limiting the rotation of the electrical connection lug 16 comprises, according to the present invention, at least one notch 30 formed in an edge 31 of the electronic card 22.

According to the embodiments illustrated in these figures, the electronic card 22 comprises three devices 300 each limiting the rotation of an electrical connection terminal 16. As mentioned above, each device 300 comprises a notch 30. According to the modes of embodiment illustrated in these figures, the electronic card 22 thus comprises three notches 30 arranged in the edge 31 of the electronic card 22.

Each of these notches 30 originates from the edge 31 of the electronic card 22 and extends along a main axis X2 as illustrated in FIG. 3, by encroaching on the electronic card 22. The term “by encroaching on the electronic card ", the fact that these notches 30 extend from the edge 31 of the electronic card 22 and towards a center of this electronic card 22, along the main axis X2.

These notches 30 respectively have two substantially parallel side walls 32 and a bottom wall 33 connecting these two side walls 32 together. Advantageously, the bottom wall 33 can be perpendicular to each of the side walls 32, this bottom wall 33 and these two side walls 32 thus delimiting a notch 30 in the shape of a U.

According to the present invention, each notch has a width L3 measured between two side walls 32 of the same notch 30, perpendicular to these two side walls 32.

As illustrated in FIG. 3, the width L3 of each of the notches 30 can be substantially equivalent to the widths L3 of the other notches 30 formed in the same electronic card 22.

As is particularly visible in FIG. 5, the widths L3 of the notches 30 are greater than the widths L2 of the central portions 19 of the electrical connection lugs 16 previously described. Thus, the central portion 19 of an electrical connection terminal 16 can be housed in a notch 30 formed in the electronic card 22. It is then understood that if the central portion 19 is not permanently in contact with the side walls 32 a notch 30, these side walls 32 form a stop, thus preventing rotation of the electrical connection lug 16, in particular when it is fixed to or against the electronic card 22. A first distance which separates an axis from the orifice 23 of the electrical connection terminal 16 and the point of contact between the edge 31 of the electronic card and the edge 42 of the central portion 19 is less than a second distance which separates the central portion 19 and an axis of the bore 20 Such an arrangement reduces the force generated against the edge 31 by a reduction in the lever arm generated by the first distance. The means for fixing the electrical connection lugs 16 to the electronic card 22 are more fully described below.

According to the first embodiment illustrated in FIG. 3, the edge 31 of the electronic card 22 in which each notch 30 is formed delimits a recess 40. In other words, the edge 31 of this electronic card 22 forms a closed contour of this recess 40, then creating on the electronic card 22 a strip 50 delimited on the one hand by this edge 31 and on the other hand by a peripheral edge 41 of the electronic card 22. According to this first embodiment, the notches 30 are formed in a portion of the contour of the recess 40 furthest from the strip 50, that is to say the portion of the contour of this recess 40 facing this strip 50.

Alternatively, the notches can be made in the edge participating in the delimitation of the strip. Fixing holes for securing the electrical connection lugs on the electronic card can then be made in this strip and electrical connection pads can also be made on this strip. These fixing holes and these electrical connection pads are more fully described below.

The strip 50 presented by the electronic card 22 according to the first embodiment of the present invention also makes it easier to position additional components on this electronic card 22. This strip 50 also offers greater flexibility for routing the electronic card 22.

According to the second embodiment illustrated in FIG. 5, the edge 31 in which each notch 30 is formed is the peripheral edge 41 of the electronic card 22. It is understood that this FIG. 5 is a view of a lower face 39 of the electronic card 22.

According to a third embodiment not shown here, the electronic card has a plurality of devices each limiting the rotation of one of the electrical connection lugs. According to this third embodiment, the devices limiting the rotation of the electrical connection lugs are arranged in a plurality of edges of the electronic card, each of these edges delimiting a recess. Each of these devices includes a notch configured to receive the central portion of an electrical connection lug.

The electronic card 22 also has a plurality of electrical connection pads 34 shown in FIG. 3. As illustrated, these electrical connection pads 34 are produced on an upper face 35 of the electronic card 22. As can be seen, the electronic card 22 has as many electrical connection pads 34 as there are notches 30, each electrical connection pad 34 being disposed opposite the bottom wall 33 of one of these notches 30.

It is also noted that these electrical connection pads 34 are arranged in the extension of these notches 30, along the main axis X2 described above, this main axis X2 along which mainly extends each notch 30 then passing through the centers of these electrical connection pads 34.

In order to allow the fixing of the electrical connection lugs 16 on the electronic card 22, the latter has at least one fixing hole 36 produced for example in the center of an electrical connection pad 34. Advantageously, such a fixing hole 36 is produced at the centers of each of the electrical connection pads 34. As notably illustrated in FIGS. 4 and 5, these fixing holes 36 are configured to each receive a screw 37 allowing a plating of each of the electrical connection lugs 16, and more precisely of each of the second ends 18 of these electrical connection lugs 16, against the electronic card 22, so as to ensure electrical contact between the electrical connection pads 34 and these electrical connection lugs 16.

We also understand that these electrical connection pads 34 are only visible in Figure 3 since in Figure 4 the electrical connection lugs 16 are fixed on these electrical connection pads 34 and that Figure 5 is a front view lower 39 of the electronic card 22.

As shown in Figure 5, at least one threaded insert 38 is secured to the electronic card 22 according to the present invention. This connection can for example be carried out by welding or by crimping the threaded insert 38 on the underside 39 of the electronic card 22. According to the embodiment illustrated in this figure, three threaded inserts 38 are secured on the electronic card 22 , in line with each of the electrical connection pads 34. These threaded inserts 38 each receive a screw 37 so as to secure the electrical connection lug 16 on the electronic card 22, in particular in electrical contact with the electrical connection pad 34.

As previously mentioned, and as shown in FIGS. 4 and 5, the first end 17 and the second end 18 of each electrical connection terminal 16 are arranged in two different planes, each distributed on either side of the electronic card 22. More precisely, the first end is disposed on the side of the upper face 35 of the electronic card 22 and the second end is itself disposed on the side of the lower face 39 of this electronic card 22. It is a simple technical solution which makes it possible to guarantee mechanical interference between the electrical connection terminal 16 and the edge 31 of the electronic card 22, so as to fulfill the anti-rotation function offered by the device 300 limiting the rotation of the connection terminal electric 16 vis-à-vis the electronic card 22.

Thanks to these devices limiting the rotation of the electrical connection terminal, the latter does not generate any force on the pin when the electrical connection terminal is tightened against the electrical connection pad. Indeed, the side walls of the notches forming these devices take up the rotational forces and transmit them to the electronic card. Given the high electrical voltages involved in such a compressor, it is thus advantageous to limit the forces and movements during assembly which, in the absence of the invention, could be transmitted to the high voltage pin which passes through the wall separating the cavities of the electric compressor. Given the fragility of such pins, the provisions of the invention become particularly interesting. Furthermore, limiting movement between the electrical connection terminal and the spindle during assembly of the electric compressor prevents the generation of electric arcs between this electrical connection terminal and the spindle, which can damage the electric compressor.

The invention cannot however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configurations and to any technical combination operating such means. In particular, the shapes and the dimensions of the devices limiting the rotation of each electrical connection terminal can be modified without harming the invention, in so far as they fulfill the functions described in this document.

Claims (10)

1. Control module (8) of an electric compressor (1) comprising at least one electronic card (22) and at least one electrical connection lug (16) secured to the electronic card (22), this electronic card (22 ) comprising at least one device (300) limiting a rotation of the electrical connection lug (16), characterized in that the device (300) limiting the rotation of the electrical connection lug (16) is formed in an edge (31 ) of the electronic card (22). 2. Control module (8) according to the preceding claim, wherein the device (300) limiting the rotation of the electrical connection lug (16) comprises at least one notch (30) which originates from the edge (31) of the electronic card (22) and which encroaches on the electronic card (22), a portion of the electrical connection terminal (16) extending in the notch (30). 3. Control module (8) according to any one of the preceding claims, in which the electrical connection terminal (16) comprises a first end (17) having a bore (20) configured to allow embedding of a pin ( 14) electrically connected to an electric motor (7) of the electric compressor (1) and a second end (18) in which is an orifice (23) configured to secure the electrical connection lug (16) on the electronic card (22 ), this first end (17) and this second end (18) being interconnected by a central portion (19) having at least two successive folds (25, 26). 4. Control module (8) according to the preceding claim, wherein the first end (17) of the electrical connection lug (16) and the second end (18) of this electrical connection lug (16) are arranged in part. and on the other side of the electronic card (22). '' 5. Control module (8) according to any one of the preceding claims, in which the electronic card (22) comprises at least one threaded insert (38) integral with this electronic card (22), the threaded insert (38) participating in the connection of the electrical connection terminal (16) on the electronic card (22). 6. Control module (8) according to any one of the preceding claims, in which the edge (31) of the electronic card (22) in which the device (300) is formed limiting the rotation of the electrical connection terminal ( 16) delimits a recess (41) formed in the electronic card (22). 7. Control module (8) according to any one of claims 1 to 4, in which the edge (31) of the electronic card (22) in which is provided the device (300) limiting the rotation of the connection terminal electric (16) is a peripheral edge (41) of this electronic card (22). 8. Control module (8) according to any one of the preceding claims, in which the electronic card (22) comprises at least one electrical connection pad (34) and has at least one fixing hole (36) formed through of this electrical connection pad (34), this fixing hole (36) being configured to allow the fixing of the electrical connection lug (16) on this electronic card (22). 9. Control module (8) according to claim 2, in which the notch (30) is partly delimited by two side walls (32) which each block a direction of rotation of the electrical connection terminal (16). 10. Electric compressor (1) comprising a housing (2) delimiting a first cavity (11) housing at least one compression mechanism (5) of a coolant and at least one electric motor (7) and a second cavity (10 ) housing at least one control module (8) of this electric motor (7) according to any one of the preceding claims, these two cavities (10, 11) being separated by a wall (12) traversed by at least one pin ( 14) electrically connected to the electric motor (7) on the one hand and to the electrical connection lug (16) on the other hand. 1/3 XI Hg2 2/3