Capacitor, in particular intermediate circuit capacitor, for power electronics of a vehicle

Abstract

Capacitor (1), in particular intermediate circuit capacitor, for power electronics of a vehicle, with - a housing body (2) with an interior space (3) for receiving a capacitor means (4); - a capacitor means (4) which is accommodated in the interior space (3), wherein the capacitor means (4) is connected or connectable to a mating contact means (7) outside the housing body (2) via an electrical and / or electronic interface (6) having at least one electrical and / or electronic contact means (5), wherein - the housing body (2) has a flat support section (21) arranged outside the interior (3) of the housing body (2), on which a counter-support section (51) of the contact means (5) is or can be supported by, in particular, flat contact.

Description

[0001] The invention relates to a capacitor, in particular an intermediate circuit capacitor, for the power electronics of a vehicle. Corresponding capacitors are basically known from the prior art. Typically, capacitor means, i.e., electrical components of a capacitor such as a capacitor coil, are arranged in a housing body, wherein contact means for connecting the capacitor means to electrical components adjacent to the capacitor and establishing an electrical connection with the capacitor, protrude from the housing body. It can prove disadvantageous if, during a connection process to form an electrically conductive connection between the contact means and a third object, a compressive force is exerted on the contact means, since this can, for example, lead to plastic deformation of the contact means, which has a negative effect on the quality of the electrically conductive connection.

[0002] The invention is based on the object of specifying a capacitor, in particular an intermediate circuit capacitor, which can be produced in a reliable manner and / or can be connected to a third object by applying a compressive force to form an electrically conductive connection.

[0003] The object is achieved by a capacitor, in particular an intermediate circuit capacitor, for the power electronics of a vehicle according to claim 1. The dependent claims relate to possible embodiments of the capacitor. The object is also achieved by a power converter according to claim 10, an electric axle drive according to claim 11, and a motor vehicle according to claim 12. Furthermore, the object is achieved by a method for producing a capacitor according to claim 13. Claim 14 relates to a possible embodiment of the manufacturing method.

[0004] The invention relates to a capacitor, in particular an intermediate circuit capacitor, for the power electronics of a vehicle. Such a capacitor can also be referred to as a "DC link" of the power electronics of a vehicle. The capacitor can be used to avoid or cap voltage peaks. These voltage peaks can arise, for example, from the switching behavior of a power module or power electronics that converts or transforms direct current into alternating current. The capacitor can be of modular construction, i.e., depending on the requirement for a capacitor function of the power electronics comprising the capacitor, several capacitors with defined performance values ​​(e.g., capacitance values) are connected together. The individual capacitors can, for example, be electrically connected in parallel via the contact means, e.g.be electrically connected to the contact means of the capacitors via a busbar.

[0005] The capacitor comprises a housing body with an interior space for accommodating an electrical capacitor. For example, the housing body is formed at least partially, preferably predominantly, particularly preferably entirely, from plastic, in particular manufactured using a plastic injection molding process.

[0006] The capacitor further comprises a capacitor means accommodated in the interior of the housing body, wherein the capacitor means accommodated in the interior of the housing body is connected or connectable to a mating contact means outside the housing body via an electrical and / or electronic interface having at least one electrical and / or electronic contact means. In other words, the contact means forms an electrical and / or electronic connection from the capacitor means, which is placed at least partially, preferably predominantly, particularly preferably completely, in the interior of the housing body, to a mating contact means of a third object located or arranged outside the interior of the housing body.For example, the capacitor can be electrically and / or electronically conductively connected via the contact means to an electrical or electronic component (third-party object) arranged outside the housing of the capacitor. For example, the contact means protrudes from the housing body for this purpose. The housing body can, at least in the final assembly and / or final production state, enclose the capacitor means, for example at least one capacitor component (e.g. a capacitor coil), at least in sections, preferably predominantly, particularly preferably on at least 5 sides. The capacitor components can be protected by the housing body. This means, for example, that at least one electrode and / or a dielectric of the capacitor is surrounded by the housing body and / or shielded or protected from external mechanical influences.

[0007] The housing body has a flat support section arranged outside the interior of the housing body, on which a counter-support section of the contact means is supported or can be supported by, in particular, flat contact. The flat support of the counter-support section of the contact means by means of the housing body-side support section supports the contact means such that in the event of pressure being applied to the contact means, e.g. when a counter-contact means of a third object is pressed against it, at least the contact means experiences no or no significant bending, in particular no or no significant plastic deformation. This makes it possible in a simple and reliable manner to achieve a contact force despite the application of a compressive force to the contact means, e.g.during the welding of a mating contact means of a third object, to enable a defined shape and / or alignment and / or position of the contact means. In this way, a zero gap can be achieved and the welding of the third object, in particular the busbar, to the contact means can be improved. The surface contact of the busbar can also be improved due to the avoidance of deflections. For example, the mating support section rests at least temporarily on the support section of the housing body. The mating support section rests on the support section at least while the contact means is subjected to compressive force. Optionally, in the final assembly state of the capacitor and / or when the capacitor is free of external forces, the housing body-side support section can be in contact with the contact means-side mating support section.This has the advantage that when pressure is applied to the contact means, no relative movement is carried out between the contact means and the support section on the housing body side.

[0008] It is possible for the housing body to have a prismatic basic shape, in particular a cuboid or cuboid-shaped basic shape, wherein the housing-body-side support section is designed as a protrusion that extends at least partially, preferably predominantly, particularly preferably exclusively, outside the basic shape. In other words, the support section can be designed as at least one projection from a housing body shape that otherwise essentially has a prismatic and / or cuboid shape. Thus, the housing body can occupy the smallest possible volume, which is essentially dependent on the dimensions of the capacitor means, wherein at least the support section protrudes from this housing basic shape.For example, a contact surface formed by the contact between the housing body-side support section and the contact means-side counter-support section is located at least partially, preferably predominantly, particularly preferably exclusively, outside the basic shape of the housing. In other words, the support function resulting from the contact between the support section and counter-support section can, for example, be arranged or formed exclusively outside the basic housing shape or the wall of the housing body forming the basic housing shape. The support function can thus be spatially relocated outside the interior of the housing body, so that a larger volume of the interior of the housing body can be made available for other tasks and / or the interior of the housing body can have smaller dimensions.

[0009] In a preferred development, it can be provided that the housing body has at least one, in particular at least two, fastening protrusions extending at least partially, preferably predominantly, particularly preferably exclusively, outside the basic shape of the housing body for fastening the housing body to a third object. In the direction of the joining direction or insertion direction for joining or inserting the capacitor means into the interior of the housing body, all fastening protrusions do not coincide with the support section. In other words, there is no overlap between fastening protrusions and support elements of the support section when the capacitor is projected into a projection plane running perpendicular to the joining direction or insertion direction.For example, the housing body can have a tool-like geometry for an injection molding process, in particular for a plastic injection molding process, so that the housing body is completely surrounded by the injection molding tool that shapes it. This has the advantage that no subsequent contour trimming is necessary. For example, in the demolding direction, the at least one, in particular all, fastening protrusion(s) on the housing body side and the at least one, in particular all, support section(s) on the housing body side do not overlap. The at least one fastening protrusion, preferably all fastening protrusions of the housing body, can be designed, for example, as a flange, in particular provided with a through-opening. If at least one flange has a through-opening, this can be used for at least partially inserting a fastening means, e.g.a screw and / or a rivet.

[0010] It is possible for the support section of the housing body to be formed at least in sections, preferably predominantly, particularly preferably completely, as a one-piece, i.e., as a component made of the same material, of the housing body. For example, during a plastic injection molding process to form the housing body defining the interior, a structure forming the housing-body-side support section is co-injected, i.e., produced in situ. Preferably, the structure forming the support section can be formed from the same material as the housing body. Alternatively, the structure forming the support section can be formed from a material that is different from the material of the housing body.For this purpose, the housing body can be manufactured, for example, in a two-component injection-molding process, wherein a first injection-molding material component forms the housing body and a further injection-molding material component forms the structure forming the support section. Alternatively or additionally, it can be provided that at least one fastening protrusion of the housing body is formed as a one-piece, i.e., a uniform material, component of the housing body. In other words, the at least one fastening protrusion of the housing body can be injection-molded or manufactured, for example, during an injection-molding process forming the housing body.

[0011] In a preferred embodiment, it can be provided that the housing body has an elongated shape and the support section of the housing body is or are arranged or formed on at least one long side of the housing body, in particular on two opposite long sides of the housing body. Alternatively or additionally, the housing body-side support section and the contact means-side counter-support section can be arranged or formed on at least one, in particular on two opposite short sides of a prismatic or cuboid-shaped housing body. Preferably, all housing body-side support sections and all contact means-side counter-support sections are arranged exclusively on a single long side or on at least one long side or on a single transverse side or at least one transverse side of the housing body.The support sections and / or counter-support sections can be arranged or formed at least in sections, preferably predominantly, particularly preferably exclusively, on an edge section of the housing body that delimits the interior on the outside.

[0012] It is possible for the support section to have at least two support elements assigned to a contact section of the contact means, wherein the support elements are spaced apart from one another. By spacing two support sections of the housing body apart, a free space is created. In the region of this free space, there can be a contact region of the contact means which has no direct support through its contact with a support section. This at least one contact region or this at least one free space can be used to introduce at least one thermal stress injection into the contact means at this point or these points. Since the support elements on the housing body side are spaced apart from these points, the thermal energy input of thermal energy introduced at this point is also reduced. In other words, the at least one free space orThe contact area can be used as a location for creating a welded connection, e.g., a spot weld, between the contact means and a counter-contact means. The risk of melting of the at least one support element, e.g., made of plastic, can be reduced by spacing the welding location from the at least one support element.

[0013] In a further exemplary embodiment, it can be provided that a first group of at least two support elements supports a first contact portion of the contact means, and a second group of at least two support elements supports a second contact portion of the contact means. By grouping the support elements, the support elements of the respective groups can be spaced at different distances from one another and / or the distances between adjacent groups can be configured differently.

[0014] It is possible for the housing body to have a pot shape with one, in particular a single, opening, wherein the housing-body-side support section is arranged or formed at an edge region of the opening. The pot shape of the housing body can, for example, have closed side walls and a closed pot base. Preferably, the interior of the housing body has a constant internal extension in the direction of the pot base or one that tapers towards the pot base. In other words, the interior of the housing body can be designed such that it has no undercut. For example, the support elements are at least partially, preferably predominantly, preferably completely, crenellated. The support elements, in particular crenellated, can preferably be arranged at the edge region of the opening of the housing body and circumferentially around the opening.

[0015] The housing body-side support section can, for example, form a flat support surface. Preferably, the flat support surfaces of at least two support elements of the support section, particularly preferably all support elements of the support section, are arranged or formed on a common plane. This makes it possible to bring a mating contact means into contact, in particular planar contact, with the capacitor, in particular with the contact means of the capacitor, on a flat contact surface. Preferably, all contact sections for contacting the contact means of the capacitor lie on a single flat plane.

[0016] The invention also relates to a power converter, in particular an inverter, for a motor vehicle with a capacitor. The power converter is characterized in that the capacitor is designed as described.

[0017] The invention also relates to an electric axle drive for a motor vehicle comprising at least one electric motor, a transmission device, and an inverter. The electric axle drive is characterized in that the converter is designed as described. The transmission device can have a gear for reducing the speed of the electric motor and a differential.

[0018] The invention also relates to a motor vehicle with an electric axle drive and / or a power converter. The motor vehicle is characterized in that the electric axle drive and / or the power converter are designed as described.

[0019] The invention further relates to a method for producing a capacitor described herein, wherein one method step provides for inserting a capacitor provided with a contact means into an interior of a housing body by means of an insertion movement, wherein a support section of a housing body is used as a mechanical stop during the insertion of the capacitor means by contact with the counter-support section of the contact means. In other words, the housing-body-side support section is used as an end stop for joining or inserting an assembly consisting of a capacitor means and a contact means. Thus, in a prior process step, the contact means can be connected to the capacitor means in a force-fitting and / or form-fitting and / or material-fitting manner. For this purpose, the assembly formed from the capacitor means and the contact means can, in particular, form a rigid assembly.This allows for support and / or a supporting placement of this assembly on the housing body during insertion. In an advantageous continuation, it can optionally be further provided that, during contact of the contact means with the support section of the housing body, a gap is formed between an inner wall of the housing body and the capacitor means, and that the gap is filled at least partially, preferably predominantly, and particularly preferably completely, with a filler material. The filler material introduced into the gap can form a filler body, in particular after it has hardened or solidified.

[0020] The filler body of the capacitor is preferably designed such that the filler body separates the capacitor means from the housing body at least in sections, preferably predominantly, particularly preferably completely. In other words, it can be provided that the capacitor means has no direct contact with the housing body. Alternatively or additionally, it can be provided that the assembly formed from the capacitor means and the contact means is in contact with the housing body exclusively via the contact of the housing-body-side support section with the contact-means-side mating contact section. Accordingly, a gap present between the assembly formed from the capacitor means and contact means and the housing body can be filled by the filler body at least in sections, preferably predominantly (e.g., area or volume fraction), particularly preferably completely.

[0021] All advantages, details, embodiments and / or features of the capacitor according to the invention are applicable to the power converter according to the invention and the electric axle drive according to the invention and the motor vehicle according to the invention and the method according to the invention for producing a capacitor and vice versa.

[0022] The invention is explained in more detail using exemplary embodiments in the drawings. In the drawings: Fig. 1 a perspective schematic representation of an assembly located outside the housing body, which is formed from capacitor means and contact means according to an embodiment; Fig. 2 a perspective schematic diagram of an assembly and a housing body according to Fig. 1, wherein the assembly is received in the interior of the housing; Fig. 3 a schematic sectional view of the capacitor according to section line III-III of Fig. 6, wherein the capacitor is filled with a filling material; Fig. 4 a schematic side view of the right longitudinal side of the capacitor according to Fig. 2; Fig. 5 a schematic side view of the left longitudinal side of the capacitor according to Fig. 2; Fig. 6 is a schematic plan view of a capacitor according to an embodiment; Fig. 7 a schematic bottom view of a capacitor according to Fig. 6.

[0023] The figures show a capacitor 1, in particular an intermediate circuit capacitor, for power electronics or for the power electronics of a vehicle (not shown). The capacitor 1 comprises a housing body 2, which has an interior space 3 for accommodating a capacitor means 4. The capacitor means 4 can, for example, comprise at least one electrical foil winding, also referred to as a capacitor winding, and / or other electrical or electronic components that are used to form a capacitor 1. The capacitor means 4 is accommodated in the interior space 3 of the housing body 2. In other words, the capacitor means 4 can be formed by the housing body 2 - as in Fig. 1 - is enclosed on at least five sides and is therefore protected from mechanical influences by the housing body 2 at least on these five sides. The capacitor means 4 is connected to a mating contact means 7 outside the housing body 2 via an electrical and / or electronic interface 6 having at least one electrical and / or electronic contact means 5 or is connectable to such a contact means. For this purpose, the contact means 5 can be connected to a mating contact means 7 of a third object 20. The third object 20 can, for example, be designed as a busbar and can be brought into contact and / or connected to the contact means 5 at points or over a large area. For example, the third object 20 is connected to the contact means 5 in a materially bonded manner, in particular by welding or soldering.The contact means 5 can be designed such that it provides a flat contact surface for contacting a, in particular flat, contact section of the mating contact section 7 of the third object 20. For example, the contact means 5 is formed at least in sections, preferably predominantly, particularly preferably entirely, from a flat base body, e.g., a sheet metal, and shaped into its target geometry by a forming process. For this purpose, the flat, in particular metallic, base body can be deformed into a target geometry by folding or folding (bending process). Optionally, the contact means 5 can have been subjected to or have undergone a separating process step (e.g., punching process or cutting process) before and / or during and / or after a forming process (e.g., bending process).

[0024] The housing body 2 has a flat support section 21 arranged outside the interior space 3 of the housing body 2, on which a counter-support section 51 of the contact means 5 is supported or can be supported by, in particular, flat contact. In other words, support elements 22, 22', 23, 23' of a support section 21 are arranged or formed on the housing body 2, e.g., balcony-like. These support elements 22, 22', 23, 23' are, for example, dimensioned and / or arranged such that when a compressive force is applied, in particular a compressive force directed in the direction of the insertion movement 101 of an assembly to be introduced into the housing 2 consisting of capacitor means 4 and contact means 5, to the contact means 5, in particular to a section of the contact means 5 which serves for connection to a mating contact section 7 of a third object 20, the contact means 5 is supported.This support can be designed such that no bending and / or no plastic deformation of the contact means occurs during the application of force. The aforementioned application of force can be directed, for example, in the direction of or along the insertion movement 101 and / or in the Y direction or perpendicular to the main extension plane of the housing body 2. In the . Fig. 3, the force application is shown as a compressive force visualized with the arrows 31 and applied to the third object 20 and acting via the third object 20 on the contact means 5 and on the support section 21.

[0025] The housing body 2 can, for example, as shown in the figures, have a prismatic basic shape, in particular a cuboid or cuboid-shaped basic shape. The housing body-side support section 21 can be designed as a projection 8 extending at least partially, preferably predominantly, particularly preferably exclusively, outside the basic shape. As shown, for example, in Fig. 3, the support section 21 extends in the Z-direction and / or in the Y-direction outside the interior space 3 of the housing body 3, in particular outside the prismatic basic shape of the housing body 2. In other words, the support section can be arranged or formed at least in sections, preferably predominantly, particularly preferably completely, outside of a wall section formed by the housing body 2 to delimit the interior space 3. Thus, as shown by way of example in Fig. 3 - the support surface of the support section 21 can be arranged or formed above an upper boundary (in the Y direction) of the interior space 3 and / or offset laterally from a lateral boundary (in the Z direction) of the interior space 3. Optionally, the contact surface formed by the contact of the contact element-side support section 21 with the housing body-side counter-support section 51 can be located exclusively outside the basic shape of the housing body 2.

[0026] The housing body 2 can, for example, have at least one, in particular at least two, at least partially, preferably predominantly, particularly preferably exclusively, fastening protrusion(s) 9, 9' extending outside the basic shape for fastening the housing body 2 to a third object 20. In this case, it can optionally be provided that in a direction parallel to a joining direction of a joining of the capacitor means 4 into the interior 3 of the housing body 2 (ie in the Y-direction according to Fig. 1 and Fig. 3), the at least one fastening protrusion 9, 9', in particular all fastening protrusions 9, 9' of the housing body 2, is / are not aligned with the support section 21, in particular with no support element 22, 22', 23, 23' of the housing body 2. As in Fig. 7, there is no coverage or overlap of a fastening protrusion 9, 9' with a support section 21. This means that when viewed in the Y direction or when projecting the capacitor 1 into its main extension plane (XZ plane), there is no overlap or overlap of a fastening protrusion 9, 9', in particular not a single fastening protrusion 9, 9', with a support section 21, in particular not a single support element 22, 22', 23, 23' of the support section 21. This enables easy removal of a correspondingly designed housing body 2 from a tool mold forming this housing body 2, in particular an injection mold.

[0027] The support section 21 of the housing body 2 can, for example, be formed at least in sections, preferably predominantly, particularly preferably completely, as a one-piece component of the housing body 2. For example, the housing body 2 has been produced in the course of a casting process, preferably an injection molding process, particularly preferably a plastic injection molding process. For example, during the primary forming production process for forming the housing body 2, a wall section delimiting or defining the interior 3 and (a) a support section 21 and / or (b) at least one fastening projection 9, 9' can be produced. The at least one fastening projection 9, 9', in particular all fastening projections 9, 9' of the housing body 2, can be designed as a flange and / or have a through-opening for at least partially receiving a fastening means, e.g.a screw or rivet.

[0028] For example, in the Fig. 1, Fig. 2 and Fig. 6, a contact means can have at least two contact sections 12, 13, each of which is flat and which optionally extend in a common plane. For example, the two contact sections 12, 13 have a distance or a free space from one another, wherein, when the capacitor 1 is projected into the ZX plane and / or into a main extension plane of the housing body 2 and / or into a plane parallel to a flat, flat profile of the contact surfaces of at least one contact section 12, 13, at least one fastening protrusion 9, 9' is arranged or formed within the at least one distance between the two contact sections or within the free space. The free space can thus be used, for example, to apply or guide a tool, e.g., a screwing tool, for fastening a fastening means, e.g., a screw, to the fastening protrusion 9, 9'.In other words, the free space can release a feed channel to guide a fastening means and / or a tool to the fastening protrusion 9, 9'.

[0029] The housing body 2 can, for example, have an elongated shape, and the support section 21 of the housing body 2 can be arranged or formed on at least one longitudinal side 10, 10' of the housing body 2, in particular on two opposite longitudinal sides 10, 10' of the housing body 2. It is possible for the support section 21 to be arranged or formed exclusively on the longitudinal sides 10, 10' of the housing body 2. Optionally, the support section 21 can be arranged or formed exclusively on at least one transverse side 11, 11' (short side of an elongated housing body 2). Thus, it is possible for the support section 21 to be arranged or formed exclusively on two opposite transverse sides 11, 11' of the housing body 2.

[0030] The support section 21 can, for example, have at least two support elements 22, 22', 23, 23' assigned to a contact section 12, 13 of the contact means 5, wherein the support elements 22, 22', 23, 23' are spaced apart from one another by a distance 26. The distance 26 between a first support element 22 and a second support element 22' adjacent to the first support element 22 can correspond to at least half the width 27, preferably at least two-thirds of the width 27, particularly preferably at least the width 27, of the first and / or second support element 22, 22'.

[0031] A grouping of support elements 22, 22', 23, 23' can also be provided, according to which, for example, a first group 14 of at least two support elements 22, 22' supports a first contact section 12 of the contact means 5 and a second group 15 of at least two support elements 23, 23' supports a second contact section 13 of the contact means 5. The first group 14 can have a distance 28 (in the X direction) from the second group 15 that corresponds to at least half a width 29 (in the X direction), preferably at least two-thirds a width 29 (in the X direction), particularly preferably at least the width 29 (in the X direction), of a fastening protrusion 9, 9', cf. Fig. 5.

[0032] Alternatively or additionally, the distance 28 (in the X direction) between a first group 14, 15 and a second group 14, 15 can correspond to at least one eighth, preferably at least one sixth, particularly preferably at least one quarter, most preferably at least one third of the length 30 (in the X direction) of a maximum extension of the first or second group 14, 15. Alternatively or additionally, the distance 28 (in the X direction) between a first group 14, 15 and a second group 14, 15 can correspond to a maximum of three times, preferably a maximum of twice, particularly preferably a maximum of once, most preferably a maximum of two-thirds, more preferably a maximum of half, of the length 30 (in the X direction) of a maximum extension of the first or second group 14, 15 of the support elements 22, 22', 23, 23'.

[0033] It is possible for the support section 21 to be designed as a continuous strip (not shown). For example, within a counter-support surface of the contact means 5, it can be supported without interruption by a continuous support element (not shown) or without interruption by a continuous support means 21.

[0034] It is also possible for a first group of support means 22, 22', 23, 23' to be arranged or formed on a first longitudinal side 10 and a second group of support means 23, 23' to be arranged or formed on a longitudinal side 10' of the housing body 2 opposite the first longitudinal side 10.

[0035] The housing body 2 can, for example, as in Fig. 1 - have a pot shape with an opening 16, wherein the support section 21 is arranged or formed at an edge region 17 or at an edge of the opening 16. The edge region 17 delimits or defines the opening 16.

[0036] The support section 21 can, for example, form a flat support surface. If the housing body 2 comprises at least two support elements 22, 22', 23, 23' of the support section 21, flat support surfaces of at least two support elements 22, 22', 23, 23', particularly preferably the support surfaces of all support elements 22, 22', 23, 23' of the support section 21, can be arranged or formed lying on a common plane. This achieves a simplified connection to the mating contact means 7 of the third object 20, since the latter must be aligned or positioned on a plane for its connection. For example, the mating contact means 7 of the third object 20 itself has a flat surface, so that a simple application of the two flat surfaces is possible.

[0037] The invention also relates to a method for producing a capacitor 1 described herein, wherein an insert 100 (cf. Fig.1) a capacitor means 4 provided with a contact means 5 is inserted into an interior space 3 of a housing body 2 by means of an insertion movement 101, and a support section 21 of a housing body 2 is used as a mechanical stop during the insertion 100 of the capacitor means 4 by contact with the contact means 5. This means that the contact means 5 performs both a function for the subsequent formation of an electrically conductive contact with a mating contact means 7 of a third object 20 and a function as an assembly aid (stop) for a defined insertion of the assembly formed from the capacitor means 4 and the contact means 5.Optionally, during contact of the contact means 5 with the support section 21 of the housing body 2, a gap 18 can be formed between an inner wall 19 of the housing body 2 and the capacitor means 4, wherein the gap 18 is filled at least partially, preferably predominantly, particularly preferably completely, with a filler material 24. In other words, by bringing the counter-contact means 51 on the contact means side and the support section 21 on the housing body side into contact, the assembly received in the interior 7, formed from the contact means 5 and the capacitor means 4, can form a gap 18 or a cavity within the interior 7 of the housing body 2, into which a filler material 24 can be introduced, in particular during a casting process, in particular an injection molding process.After the filling material 24 introduced into the gap 18 has hardened, it can form a filling body 25 that fills the gap 18 at least partially, preferably predominantly, particularly preferably completely. Reference symbol 1 capacitor 2 housing bodies 3 interior of 2 4 capacitor means 5 contact agents 6 electrical or electronic interface between 5 and 7 7 counter contact agents of 20 8 Emphasis 9, 9' fastening highlight 10, 10' long side of 2 11, 11' short side of 2 12 first contact section of 5 13 second contact section of 5 14 first group of 22, 22' 15 second group of 23, 23' 16 Opening 17 edge area of ​​16 18 gap space 19 inner wall of 2 20 Third-party object, e.g., busbar 21 support section of 2 22, 22' support element of 21 23, 23' support element of 21 24 filling material 25 packing elements 26 Distance between 22 and 22' 27 widths of 22, 22', 23, 23' 28 Distance between 14 and 15 29 Width of 9.9' 30 length of 14, 15 31 Arrow 51 counter support devices of 5 100 Inserting 4 and 5 into 3 101 Insertion movement

Claims

[1] Capacitor (1), in particular intermediate circuit capacitor, for power electronics of a vehicle, with - a housing body (2) with an interior space (3) for receiving a capacitor means (4); - a capacitor means (4) which is accommodated in the interior space (3), wherein the capacitor means (4) is connected or connectable to a mating contact means (7) outside the housing body (2) via an electrical and / or electronic interface (6) having at least one electrical and / or electronic contact means (5), wherein - the housing body (2) has a flat support section (21) arranged outside the interior (3) of the housing body (2), on which a counter-support section (51) of the contact means (5) is or can be supported by, in particular, flat contact. [2] Capacitor (1) according to claim 1, characterized bythat the housing body (2) has a prismatic basic shape, in particular a cuboid-like or cuboid-shaped basic shape, wherein the housing body-side support section (21) is designed as a protrusion (8) extending at least partially, preferably predominantly, particularly preferably exclusively, outside the basic shape. [3] Capacitor (1) according to claim 2, characterized bythat the housing body (2) has at least one, in particular at least two, at least partially, preferably predominantly, particularly preferably exclusively, fastening protrusion(s) (9, 9') extending outside the basic shape for fastening the housing body (2) to a component, wherein in a direction parallel to a joining direction of a joining of the capacitor means (4) into the interior (3) of the housing body (2), the at least one fastening protrusion (9, 9'), in particular all of the fastening protrusions (9, 9') of the housing body (2), are not in line with the support section (21). [4] Capacitor (1) according to one of the preceding claims, characterized by that the support section (21) of the housing body (2) is formed at least in sections, preferably predominantly, particularly preferably completely, as an integral component of the housing body (2). [5] Capacitor (1) according to one of the preceding claims, characterized by that the housing body (2) has an elongated shape and the support section (21) of the housing body (2) is or are arranged or formed on at least one longitudinal side (10, 10') of the housing body (2), in particular on two opposite longitudinal sides (10, 10') of the housing body (2). [6] Capacitor (1) according to one of the preceding claims, characterized by that the support section (21) has at least two support elements (22, 22', 23, 23') assigned to a contact section (12, 13) of the contact means (5), wherein the support elements (22, 22', 23, 23') are spaced apart from one another by a distance (26). [7] Capacitor (1) according to claim 6, characterized bythat a first group (14) of at least two support elements (22, 22') supports a first contact section (12) of the contact means (5) and a second group (15) of at least two support elements (23, 23') supports a second contact section (13) of the contact means (5). [8] Capacitor (1) according to one of the preceding claims, characterized by that the housing body (2) has a pot shape with an opening (16), wherein the support section (21) is arranged or formed on an edge region (17) of the opening (16). [9] Capacitor (1) according to one of the preceding claims, characterized by that the support section (21) forms a flat support surface, preferably flat support surfaces of at least two support elements (22, 22', 23, 23') of the support section (21), particularly preferably the support surfaces of all support elements (22, 22', 23, 23') of the support section (21), are arranged or formed lying on a common plane. [10] Power converter, in particular inverter, with at least one capacitor (1), characterized by that the at least one capacitor (1) is designed according to one of claims 1 to 9. [11] Electric axle drive for a motor vehicle with at least one electric machine, a transmission device and a power converter, characterized by that the power converter is designed according to claim 10. [12] Motor vehicle, comprising an electric axle drive according to claim 11 and / or a power converter according to claim 10 and / or a capacitor (1) according to one of claims 1 to 9. [13] A method for producing a capacitor (1) according to any one of claims 1 to 9, comprising the step of: Inserting (100) a capacitor means (4) provided with a contact means (5) into an interior space (3) of a housing body (2) by means of an insertion movement (101), wherein a support section (21) of a housing body (2) is used as a mechanical stop during the insertion (100) of the capacitor means (4) by contact with the contact means (5). [14] Method according to claim 13, wherein during the contact of the contact means (5) with the support section (21) of the housing body (2), a gap (18) is formed between an inner wall (19) of the housing body (2) and the capacitor means (4) and an at least partial, preferably predominantly, particularly preferably complete, filling of the gap (18) with a filling material (24) is carried out.

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