Power electronics device

Abstract

Title of the invention: Electrical connection within a power electronics device. The present invention relates to a power electronics device (2) comprising a housing (4) defining an internal space (11) in which a plurality of electronic components are housed. The housing (4) comprises a first part (6) and a second part (8) which together define the internal space (11). The first part (6) of the housing (4) comprises a tab, and the second part (8) comprises a groove (24), with at least a portion of the tab being housed in the groove (24). The power electronics device (2) comprises at least one electrical contact element distinct from the first part (6) and the second part (8), the electrical contact element providing an electrical connection between the tab and the walls defining the groove (24). (Figure 1)

Description

Title of the invention: Power electronics device

[0001] The present invention relates to the field of power electronics devices. More particularly, the present invention relates to protections against electromagnetic interference implemented within such power electronics devices.

[0002] Power electronics devices are electrical devices integrated into many types of equipment, particularly motor vehicles such as electric or hybrid vehicles. These power electronics devices typically comprise a housing delimiting an internal space within which several electronic components are housed, such as integrated circuits, capacitors, or inductors.

[0003] Furthermore, such power electronics devices are exposed to electromagnetic interference that can negatively impact operating performance, cause malfunctions, or disrupt communication frequencies. Power electronics devices can be voltage converters used in motor vehicles, particularly electric or hybrid vehicles. These voltage converters are specifically designed to convert between direct current (DC) and alternating current (AC). The voltages to be converted in electric or hybrid vehicles are particularly high, often around 800 V.Therefore, it is all the more important in such vehicles to ensure effective grounding to protect users and / or reliable protection against electromagnetic interference to protect electrical components.

[0004] Indeed, both to protect users from current leakage and to limit the propagation of electromagnetic interference within power electronic devices, these power electronic devices are conventionally electrically connected to earth. To this end, the casing of these power electronic devices is used as a relay element electrically connected to earth to provide protection against electromagnetic interference to the electronic components housed within it.

[0005] In this context, an electrical connection between the different parts of the housing must be implemented at numerous points to ensure optimal protection against electromagnetic interference. It is known to ensure these electrical connections by means of fasteners that secure at least certain parts of the housing together. Although functional, this solution significantly increases the internal space of the case, limiting the space available for electronic components.

[0006] The present invention falls within this context and aims to overcome at least some of the drawbacks of the prior art. In particular, the present invention aims to provide a power electronics device in which at least certain parts of a power electronics device housing are electrically connected to each other in a compact, inexpensive, and easy-to-implement manner.

[0007] Thus, the present invention relates to a power electronics device comprising a housing delimiting an internal space in which a plurality of electronic components are housed, the housing comprising a first part and a second part participating in combination to delimit the internal space, the first part and the second part being arranged at least in part opposite each other, the first part of the housing comprising a tab and the other between the first part and the second part comprising a groove, at least a part of the tab being housed in the groove when the first part is assembled to the second part, the power electronics device comprising at least one electrical contact element distinct from the first part and the second part, the electrical contact element ensuring an electrical connection between the tab and walls delimiting the groove.

[0008] The power electronics device is an integrated piece of equipment, for example, in a motor vehicle. The power electronics device includes the housing, which is grounded to protect the electronic components housed within it. The housing is formed of at least two parts joined together so that an electric current can flow through the material constituting said parts. For this purpose, the housing may be made of a conductive material such as a metallic material, and in particular steel.

[0009] To effectively contain the risk of electromagnetic interference within the housing, electrical contact points between the housing parts must be made at regular intervals. To this end, the housing includes a tab and a groove, and an element that ensures electrical contact between these two parts. The tab and the groove are each relatively thin, so that their overall size within the housing is limited.

[0010] The tab and the groove are respectively formed during the molding of each part of the housing, and for this purpose, the groove has a width, measured in a given direction, which is slightly greater than the thickness, measured in the same direction, of the tab when the groove and the tab cooperate, so that the insertion of the tab into The groove is made possible while taking into account various manufacturing tolerances. To this end, electrical contact between the two parts at the tab is ensured by the electrical contact element between the tab and the groove. In other words, the housing parts are configured so that there is no direct contact between the groove and the tab; the electrical contact element compensates for manufacturing tolerances, ensuring reliable electrical contact between the groove and the tab.

[0011] The use of an electrical contact element makes it possible to ensure contact electrical connection between the two parts of the housing for grounding the power electronics device, by locating the contact at a "male / female" type assembly.

[0012] According to one feature of the invention, the groove is formed in a free end face of a wall projecting from one of the first and second parts of the housing. The use of a wall makes it possible to bring the groove closer to the tongue to ensure their cooperation without having to generate an excessively large tongue and therefore with suboptimal rigidity properties.

[0013] According to one feature of the invention, the electrical contact element comprises a body attached to a free end of the tongue and an adjusting finger projecting from the body and contacting at least one of the walls defining the groove. The adjusting finger has a curved shape, so as to form a convex contact surface with at least one wall defining the groove. This adjusting finger has higher elastic deformation properties than the body, for example, due to a difference in material, a thinner profile, or a suitable shape with a movable free end.

[0014] According to one feature of the invention, the body extends on each side of the tab. This arrangement of the body relative to the tab allows the electrical contact element to engage with the tab, thus securing the electrical contact element to the tab. The body is snapped onto the tab, thereby securing it without the need for screws.

[0015] According to one feature of the invention, the walls delimiting the groove are formed of two elongation walls and a base wall, the elongation walls being separated from each other by the base wall, the electrical contact element coming into contact with at least one of said walls. The electrical contact element is primarily, or solely, in contact with the base wall. Where applicable, the electrical contact element is in contact with the base wall and at least one of the elongation walls.

[0016] According to one feature of the invention, the body comprises two arms joined to each other by an arch that overlaps a free end edge of the tongue. When the tongue is in position in the groove, the arch is not in contact with the bottom wall, and only the adjusting finger is in contact with this bottom wall. The distance between the arch and the free end edge of the tongue is less than the distance between the adjusting finger and the free end edge of the tongue in a median plane of the tongue. Thus, the tongue is not in contact with the bottom wall, and the electrical contact element can compensate for the distance separating the free end of the tongue from the bottom wall of the wall, so that a greater tolerance in the insertion of the tongue into the groove is permitted.

[0017] According to one feature of the invention, at least the adjusting finger is configured to deform elastically when the tongue is inserted into the groove. The elastic deformation of the adjusting finger compensates for manufacturing tolerances, as previously mentioned, in order to ensure an electrical connection between the tongue and the wall. The deformability of the adjusting finger is primarily due to its convex shape, which allows it to fold towards the arch of the body as the tongue is inserted into the groove. It is possible for the contact element to be made of two materials, with the body being rigid and the adjusting finger flexible. The body provides the mechanical strength of the contact element and the connection with the tongue, while the adjusting finger forms an electrical contact point with the wall.

[0018] According to one feature of the invention, the distance between a free end of the tab and the bottom wall is greater than the thickness of the adjusting finger. In other words, during the assembly of the housing, the tab is inserted into the groove, leaving a sufficient distance from the bottom wall of the groove to ensure that the adjusting finger, whose elasticity allows it to maintain electrical contact while compensating for assembly and manufacturing tolerances, can perform its compensating function without being sandwiched between the tab and the groove.

[0019] According to one feature of the invention, the tab comprises, on at least one side, a housing in which a portion of the electrical contact element is housed. The portion of the electrical contact element intended to fit into the housing is elastically deformable, so as to achieve a snap-fit ​​connection. The interaction between the housing and said portion of the contact element ensures that the contact element remains in position on the tab. To this end, there is a complementary shape between the housing and said portion of the contact element, enabling this snap-fit ​​connection. More specifically, the body comprises two bends that tend to move closer together to form A local narrowing of the contact element, combined with the local narrowing of the tab due to the housings, ensures that the electrical contact element is securely held in place. This snap-fit ​​fastening eliminates the need for other methods, such as screwing the electrical contact element onto the tab.

[0020] According to one feature of the invention, the groove and the tongue extend within the internal space of the housing. The first part of the housing comprises a peripheral edge attached to a peripheral edge of the second part of the housing, the tongue and the groove being distinct from said peripheral edges. It is understood that the tongue and the groove are specifically designed to partition a portion of the internal space defined by the peripheral edges of the housing. This partitioning ensures electrical continuity between the two parts of the housing in central areas of the housing, away from the peripheral edges, and, where applicable, effectively protects certain components housed in the partitioned area from electromagnetic interference. Thus, the tongue and the groove create electrical contact points between the first and second parts in the middle of the housing.

[0021] According to one feature of the invention, the power electronics device comprises a plurality of electrical contact elements arranged at intervals along the tab. The use of a plurality of electrical contact elements makes it possible to distribute the electrical contact along the entire length of the tab, avoiding the need to manage the large manufacturing tolerances of a long spring blade that would extend along the tab on its own. Furthermore, each electrical contact element is subjected to less stress due to the smaller dimensions of the electrical contact elements resulting from the use of a plurality of electrical contact elements. According to one feature of the invention, the electrical contact elements are separated from each other by a distance of no more than 90 mm, and optionally at regular intervals, so as to provide optimal grounding.

[0022] According to one feature of the invention, the electrical contact element is formed of a metallic material. This metallic material allows the passage of an electric current through the electrical contact element.

[0023] Other features, details and advantages of the invention will become clearer upon reading the following description on the one hand, and several illustrative and non-limiting examples of embodiments given with reference to the accompanying schematic drawings on the other hand, in which:

[0024] [Fig-1] schematically represents an exploded view of an electronic device of power according to the present invention comprising a first part of a casing and a second part of a casing intended to be joined together the other to delimit an internal space within which electronic components not shown here are housed, a groove formed here in a low wall being made in the second part;

[0025] [Fig.2] schematically represents the first part of the housing visible on the [Fig.l], here seen from below to make visible a face of the first part not visible on the [Fig.l];

[0026] [Fig.3] schematically represents an electrical contact element conforming to the present invention and comprising an adjustment finger intended to come into contact with a second part of the housing;

[0027] [Fig.4] schematically represents electrical contact elements in contact with the tongue by cooperation between housings made in the tongue and elbows formed by each electrical contact element;

[0028] [Fig.5] schematically represents, in a cross-sectional view in a plane perpendicular to the direction of elongation of the tongue, the cooperation of the tongue of the first part of the housing as seen in Figures 2 and 4 and of the wall of the second part of the housing as seen in [Fig.1], said wall comprising a rib in which the tongue and an electrical contact element are partly inserted.

[0029] The features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from the prior art.

[0030] In the figures, the elements common to several figures retain the same reference.

[0031] Figure 1 illustrates an exploded view of a power electronics device 2. In the illustrated example, the power electronics device 2 is an electrical device designed to perform a voltage converter function. To this end, the power electronics device 2 comprises a plurality of electronic components that participate in performing a conversion between a direct current and an alternating current. This plurality of electronic components is housed in a casing 4 of the power electronics device 2. The casing 4 forms at least one protective housing providing mechanical protection for the electronic components, the casing including means for confining the electromagnetic interference. For this purpose, box 4 is electrically connected to earth.

[0032] The housing 4 of the power electronics device 2 comprises a first part 6 and a second part 8, these parts being designed to be joined together to close an internal space 11 of the housing in which some of the electronic components are arranged. The first part 6 of the housing 4 forms, in the embodiment shown, a protective cover which is positioned on a hollow tray 10 which helps to form said internal space 11.

[0033] The second part 8 is formed of said container 10 which, as in the embodiment shown, can be equipped with a separation panel 12 to form compartments within the container 10.

[0034] As seen in [Fig.1], the separation panel 12 has a plurality of receptacles 14 projecting towards the first part 6. These receptacles 14 are intended to receive a fixing element, not shown here, to secure the securing panel 12 to the first part 6 and / or to the tray 10.

[0035] The first part 6 and the second part 8 are aligned with each other along a stacking direction so that the second part 8 is positioned opposite the first part 6. When the bin 10 is equipped with the separation panel 12, this separation panel 12 is positioned along the stacking direction so as to be opposite both the bin 10 and the first part 6.

[0036] When the power electronics device 2 is assembled, the first part 6 is secured to the container 10. For this purpose, the first part 6 includes a first peripheral edge 16 forming the perimeter of the first part 6 and the container 10 includes a second peripheral edge 18 forming the perimeter of the second part 8. The first peripheral edge 16 is complementary to the second peripheral edge 18. In the embodiment shown, the first peripheral edge 16 and the second peripheral edge 18 each include holes 20 intended to receive a fastening element, not shown here, such as a screw.

[0037] The complementarity between the first peripheral edge 16 and the second peripheral edge 18 is such that when the first part 6 is assembled with the second part 8, the orifices 20 made in the first peripheral edge 16 are centered on the orifices 20 made in the second peripheral edge 18 so that each fastening element extends through said orifices 20 centered on each other to tightly link the first part 6 to the second part 8.

[0038] In addition, one of the first part 6 and the second part 8 comprises a tongue 22, visible in [Fig.2], and the other of the first part 6 and the second part 8 comprises a groove 24. In the embodiment shown, the first part 6 comprises the tongue 22 and the second part 8 comprises the groove 24.

[0039] More specifically, [Fig.2] represents a view of the first part 6 highlighting an internal face 26 of the first part 6 turned towards the second part 8 when the power electronics device 2 is assembled.

[0040] As can be seen in [Fig. 2], the tongue 22 projects from the face 26 of the first part 6 along a principal extension direction, parallel to the stacking direction, towards the second part 8. Furthermore, the tongue 22 also extends along a principal elongation direction perpendicular to the principal extension direction. A contact end 28 of the tongue 22, forming the portion of the tongue 22 in contact with the face 26 of the first part 6, extends over a larger dimension than the projection dimension of said tongue 22. In other words, the tongue 22 has a larger dimension along the elongation direction than along the extension direction.

[0041] In the embodiment shown, considering the main elongation direction of the tongue 22, the tongue 22 extends across the internal space 11 of the housing 4 over at least 50% of the distance separating two opposite walls of the housing 4.

[0042] The tab 22 is formed from material comprising one of the first part 6 and the second part 8, here the first part 6. Furthermore, in the embodiment shown, the tab 22 extends along the peripheral edge, here the first peripheral edge 16, of said part 6, 8, and perpendicularly to a portion of said peripheral edge. This embodiment improves the rigidity properties of the tab 22 and prevents any gaps between the tab 22 and said portion of the peripheral edge. It should be noted that, alternatively, the tab 22 can extend within the housing 4 without being in contact with the walls of the housing 4 comprising the first peripheral edge 16.

[0043] It is understood from the above that the tab 22 forms an element of the power electronics device 2 distinct from the first peripheral edge 16. It should be noted that the tab 22 is distinct from the first peripheral edge 16 insofar as the tab 22 extends across an internal face which is delimited by the peripheral edge.

[0044] As shown in [Fig. 1], the groove 24 is formed at a free end 30 of a wall 32 projecting from a face 34 of the second part 8 facing the first part 6, and more precisely from the inner face 26 of the aforementioned first part 6, when the power electronics device 2 is assembled. In the embodiment shown, the wall 32 projects from the partition panel 12. Of course, the wall 32 can project directly from a wall of the tray 10. Furthermore, when the first part 6 is assembled to the second part 8, the wall 32 extends along the elongation direction of the tongue 22 and from the face 34 of the second part 8 along the extension direction. More specifically, the dimension of the groove 24 measured along the elongation direction is at least equal to the dimension of the tongue 22 measured along said elongation direction.

[0045] The groove 24 and the tongue 22 cooperate with each other so that when the power electronics device 2 is assembled, a free end 36 of the tongue 22 opposite the contact end 28 is housed in the groove 24 of the wall 32.

[0046] It is understood that, when the power electronics device 2 is assembled, the tab 22 and the wall 32 extend towards each other so as to allow cooperation between the free end 36 of the tab 22 and the groove 24. In addition, the dimensions of the groove 24 measured along a thickness of the wall 32, perpendicular to the stacking direction, are such that the free end 36 of the tab 22 can fit into the groove 24 without forcing it into place.

[0047] In addition, the power electronics device 2 includes at least one electrical contact element 38 distinct from the first part 6 and the second part 8. The electrical contact element 38 is, when the power electronics device 2 is assembled, engaged with the tab 22, and more specifically with the free end 36 of the tab 22, as seen in [Fig.4], and housed in the groove 24 so as to be at least partially in contact with the walls delimiting this groove 24.

[0048] The electrical contact element 38 is configured to ensure an electrical connection between the first part, here the tab 22, and the second part 8, here the wall 32. For this purpose, the contact element 38 is formed, like the housing 4, of a metallic material suitable for conducting an electric current, for example steel.

[0049] The electrical contact element 38 comprises, on the one hand, a body 40 formed of two arms 42 extending opposite each other and joined to each other by an arch 44, and on the other hand, an adjusting finger 46 extending from the body 40. The adjusting finger 46 extends from one of the arms 42, extends between the arches 44, and has a free edge 45. In the illustrated embodiment, the electrical contact element 38 comprises two arches 44 between which the adjusting finger 46 extends.

[0050] As can be seen in [Fig. 4], the contact element 38 engages with the tongue by being in contact, via each of the arms 42, with two opposite faces of the tongue 22. To this end, each of said opposite faces of the tongue 22 includes a housing 48 intended to receive a portion of the contact element 38. More precisely, each housing 48 cooperates with a bend 50 formed by each of the arms 42 of the contact element 38. The cooperation between the bends 50 and the housings 48 makes it possible to prevent translation of the contact element 38 along the principal extension direction of the tongue 22 and along the principal elongation direction.

[0051] More specifically, the housings 48 associated with the same contact element 38 are arranged substantially opposite each other. The elbows 50 are positioned in their respective housings by means of an elastic deformation of the arms 42 of the electrical contact element 38. Indeed, in an initial position, before assembly, the distance between the elbows 50 is less than the thickness of the tab 22. The electrical contact element 38 is assembled by positioning the arms 42 on either side of the free end 36 of the tab 22 along the faces joining said free end 36, and then pushing the arms 42 along said faces of the tab 22. This has the effect of moving the arms 42 apart as soon as the elbows 50 come into contact with the tab 22, until the arms 42 are pulled back towards each other as soon as the elbows 42 are inserted into the housings 48.

[0052] As seen in [Fig. 4], the adjusting finger 46 extends, along the main extension direction of the tab 22, beyond the arch 44, so that when the power electronics device 2 is assembled, the adjusting finger 46 forms the part of the electrical contact element 38 in contact with a bottom wall participating in defining the groove 24. Said assembly of the power electronics device 2 is carried out by pressing the first part 6 against the second part 8 along the stacking direction, ensuring that the tab 22 comes to be positioned at least partially in the groove 24 during this movement along the stacking direction, which corresponds to the main extension direction of the tab 22.

[0053] Indeed, as seen in [Fig.5], the groove 24 is delimited at the free end 30 of the wall 32 by two elongation walls 52 extending opposite each other and joined to each other by a bottom wall 54.

[0054] When the electrical contact element 38 is housed in the groove 24, the contact element 38 comes into contact with at least one of the walls 52, 54 delimiting the groove 24. More specifically, the adjusting finger 46 forms the part of the contact element 38 intended to ensure an electrical connection between the tab 22 and the wall 32, and therefore between the first part 6 and the second part 8. During this assembly, the tab 22 equipped with this electrical contact element 38 tends to move closer to the bottom wall 54 of the groove 24. Moreover, during this movement, the adjusting finger 46 first comes into contact with the bottom wall 54 since the latter protrudes from the arches 44. If necessary, depending on the manufacturing tolerances of each of the housing parts, during this insertion, at least one of the arms 42 may also come into contact with a elongation wall 52.

[0055] It is particularly noticeable in [Fig. 5] that the adjusting finger 46 is elastically deformable so that during the insertion of the contact element electrical contact 38 in groove 24 the adjustment finger 46 deforms to get closer to the arch 44. This ability of the adjustment finger 46 to deform ensures electrical contact between the electrical contact element 38 and the bottom wall 54 of the wall 32 while offering a large tolerance for the insertion of the tongue 22 into the groove 24.

[0056] Furthermore, it is noteworthy in [Fig. 5] that the distance DI between the free end 36 of the tongue 22 and the bottom wall 54 of the wall 32 is greater than the thickness El of the adjusting finger 46, said distance and said thickness being measured parallel along the stacking direction, i.e. along the main extension direction.

[0057] This has the effect of allowing a degree of freedom for the elastic deformation of the adjusting finger 46. In the illustrated example, the adjusting finger 46 is in contact with the bottom wall 54, while being in line with the arches 44, and alternatively, a tab 22 could be recessed further with the adjusting finger 46 being closer to the end face of the tab 22 than are the arches 44. It is understood that the tab 22 is not directly in contact with the bottom wall 54 of the wall 32 but is electrically connected to the wall 32 by means of the electrical contact element 38.

[0058] Thus, it is the systematic contact of the body 40 with the tongue 22 at the level of the cooperation between the housings 48 and the elbows 50 and the ability of the adjustment finger 46 to come into contact with the bottom wall 54 which makes it possible to ensure an electrical connection between the tongue 22 and the wall 32 with a high reliability.

[0059] Furthermore, the fact that the tab 22 and also the wall 32 extend within the internal space 11 of the housing 4 along the main elongation direction allows for the arrangement of a plurality of electrical contact elements 38 between the tab 22 and the groove 24, so that, by means of a tab 22 and a groove 24, it is possible to maximize the number of electrical contact points between the first part 6 and the second part 8. Moreover, this allows for the local management of variations due to manufacturing tolerances, ensuring that each electrical contact element 38 is in contact with the wall 32 without excessive stress and risk of breakage. In this respect, the plurality of electrical contact elements is more advantageous than an alternative embodiment of an elastic blade forming all the electrical contact points in a single piece.

[0060] More particularly, the tab 22 comprises a plurality of electrical contact elements 38 separated from each other by a distance of at most 90 mm. Such an embodiment ensures that the contacts are sufficiently close to each other to generate electrical contact over substantially the entire length of the tab. without needing to multiply the number of electrical contact points and therefore the cost and duration of the assembly process.

[0061] The present invention as just described achieves the goal it set for itself by proposing a power electronics device consisting of a housing delimiting an internal space within which extends a tab comprising at least one contact element enabling an electrical connection between two parts of the housing by a solution simple to implement, inexpensive and not significantly encumbering the internal space compared to fixing screws.

[0062] The present invention is not limited to the means and configurations described and illustrated herein and also extends to any equivalent means and configuration as well as to any technically operative combination of such means.

Claims

Demands

1. Power electronics device (2) comprising a housing (4) delimiting an internal space (11) in which a plurality of electronic components are housed, the housing (4) comprising a first part (6) and a second part (8) participating in combination in delimiting the internal space (11), the first part (6) and the second part (8) being arranged at least partially opposite each other, one of the first part (6) and the second part (8) of the housing (4) comprising a tab (22) and the other of the first part (6) and the second part (8) comprising a groove (24), at least a part of the tab (22) being housed in the groove (24) when the first part (6) is assembled to the second part (8), the power electronics device (2) comprising at least one electrical contact element (38) distinct from the first part (6) and the second part (8),the electrical contact element (38) ensuring an electrical connection between the tab (22) and the walls (52, 54) defining the groove (24).

2. Power electronics device (2) according to claim 1, wherein the groove (24) is formed in a free end face (30) of a wall (32) projecting from one of the first part (6) and the second part (8) of the housing (4).

3. Power electronics device (2) according to any one of claims 1 and 2, wherein the electrical contact element (38) comprises a body (40) attached to a free end (36) of the tongue (22) and an adjusting finger (46) projecting from the body (40) and coming into contact with at least one of the walls (52, 54) delimiting the groove (24).

4. Power electronics device (2) according to claim 3, wherein the body (40) extends on each side of the tab (22).

5. Power electronics device (2) according to any one of claims 1 to 4, wherein the walls (52, 54) delimiting the groove (24) are formed of two elongation walls (52) and a bottom wall (54), the elongation walls (52) being separated from each other by the bottom wall (54), the electrical contact element (38) coming into contact with at least one of said walls (52, 54).

6. Power electronics device (2) according to claims 3 or 4 and according to claim 5, wherein the distance between a free end (36) of the tongue (22) and the bottom wall (54) is greater than a thickness of the adjustment finger (46).

7. Power electronics device (2) according to any one of claims 1 to 6, in combination with claim 3, wherein at least the adjusting finger (46) is configured to deform elastically upon insertion of the tab (22) into the groove (24).

8. Power electronics device (2) according to any one of claims 1 to 7, wherein the tab (22) comprises on at least one side a housing (48) in which is housed a portion (50) of the electrical contact element (38).

9. Power electronics device (2) according to any one of claims 1 to 8, wherein the groove (24) and the tab (22) extend within the internal space (11) of the housing (4), the first part (6) of the housing (4) comprising a peripheral edge (16) attached to a peripheral edge (18) of the second part (8) of the housing (4), the tab (22) and the groove (24) being distinct from said peripheral edges (16, 18).

10. Power electronics device (4) according to any one of claims 1 to 9, comprising a plurality of electrical contact elements (38) arranged at a distance from each other along the tongue (22).

11. Power electronics device (2) according to any one of claims 1 to 10, wherein the electrical contact element (38) is formed of a metallic material.

Images