Support component for connecting a capacitor, support component-capacitor unit and power converter

Abstract

A support component (140) for a capacitor (105), comprising a frame-like base body (205) designed to be plugged onto the capacitor (105), wherein the base body (205) comprises means for at least frictionally securing at least one conductor component (120, 130) to the support component (140) and means for securing the support component (140) to an external component, wherein the means for at least frictionally securing the at least one conductor component (120, 130) to the support component (140) and the means for securing the support component (140) to the external component are arranged on a top surface (210) of the base body (205), characterized in that a cross member (215) is integrally arranged on the top surface (210) of the base body (205), which connects two opposing side walls (217, 218) of the base body (205) to each other.

Description

[0001] The present invention relates to a support component for a capacitor for connecting conductor components to the capacitor. The invention further relates to a support component-capacitor unit for a power converter. The invention also relates to a power converter, which is particularly designed for supplying power to an electric axle drive in a motor vehicle.

[0002] German patent DE 10 2022 115 440 A1 discloses a connection block for a power converter, comprising a busbar connected to a device, a collar through which a fastening element is inserted, a housing formed integrally with the busbar and the collar, and a capacitor having a jacket housing and an earthing terminal projecting from the jacket housing. The capacitor is connected to the busbar. The housing holds the jacket housing in a position where the earthing terminal faces the collar, allowing the earthing terminal and the collar to be fastened together to a metal housing by the fastening element.

[0003] Furthermore, the JP 2020 - 126 991 A reveals a capacitor module with a housing and a mounting plate for holding a substrate.

[0004] One object of the invention is to provide a support component for a capacitor that is universally applicable, in particular for both X-capacitors and Y-capacitors. The invention achieves this object by means of the subject matter of the independent claims. Dependent claims describe preferred embodiments.

[0005] A capacitor support component according to the invention comprises a frame-like base body designed to be plugged onto the capacitor, the base body having means for at least frictionally securing at least one conductor component to the support component and means for securing the support component to an external component. The support component is to be understood as a capacitor holder, which can be used as a universal holder for both so-called X and Y capacitors. The means for at least frictionally securing at least one conductor component to the support component and means for securing the support component to an external component are designed such that the support component can be used in different installation spaces and can be electrically connected in a simple manner.

[0006] The base body is preferably sleeve-shaped, with an inner circumference of the base body being complementary to an outer geometry of the capacitor. The base body frames the capacitor. The base body may have recesses to save weight. Preferably, the base body is made of plastic. The base body can be easily manufactured by injection molding or 3D printing.

[0007] In this context, "frame-like" describes a structure of the base body that, when assembled, runs around or surrounds the capacitor. During assembly, the support component is axially attached to the capacitor, and the shape of the base body can be designed to prevent the support component from unintentionally slipping off the capacitor.

[0008] The means for at least frictionally fastening the at least one conductor component to the support component are designed to allow the respective conductor component to be detachably fastened to the support component. This can be advantageous for pre-assembly, i.e., before electrical coupling with a DC busbar or a housing takes place. The conductor component is preferably a thin-walled, particularly sheet-metal, component. The respective conductor component is preferably mounted after the support component has been arranged on the capacitor, so that coupling or an electrically conductive connection between the conductor component and an associated terminal of the capacitor can also be established.

[0009] The means for attaching the support component to an external component are designed to fix the support component together with the capacitor to the external component, for example a housing or the like, i.e. to arrange it in a fixed position.

[0010] The means for at least frictionally securing the at least one conductor component to the carrier component, as well as the means for securing the carrier component to the external component, are arranged on a top side of the base body, i.e., at an axial end with respect to the insertion direction of the carrier component. The top side of the base body is understood to be the side of the base body that, in the assembled state, is located on the side of the capacitor where the connection means, such as solder pins or the like, protrude from the capacitor housing. The top side of the base body may be flush with the top side of the capacitor.

[0011] The inner surface of the base body is adapted to the outer shape, particularly the outer surface, of the capacitor. Preferably, the base body is designed in plan view as a square sleeve, particularly with a substantially rectangular cross-section. Accordingly, the capacitor has a square, particularly rectangular, cross-section, with the inner surfaces of the square sleeve bearing against the outer surfaces of the base body or sliding off them during assembly. The base body can, of course, have rounded inner and / or outer corners or edges. Furthermore, it is conceivable that the capacitor has a round, particularly circular or cylindrical, outer shape. Correspondingly, the base body can have a round, particularly circular, inner circumference. In this sense, an inner circumference or inner shell of the base body is preferably designed to be complementary to an outer surface or outer circumference of the capacitor.This ensures that the support component is securely attached to the capacitor.

[0012] In this design, a crossbeam is arranged on the top surface of the base body, connecting two opposing side walls of the base body, preferably the longer sides of a base body with a rectangular cross-section. In the insertion direction of the support component, the crossbeam defines an axial end stop of the support component relative to the capacitor. The crossbeam is further preferably designed such that recesses remain on the top surface of the base body through which the capacitor's connection elements, in particular solder pins or the like, can pass. The crossbeam thus acts as a kind of brace between two opposing sides of the base body, which can bear against the top surface of the capacitor, particularly the side where the capacitor's connection elements extend from the capacitor housing. The crossbeam can also improve the stiffness of the support component.

[0013] According to one embodiment, the means for attaching the support component to the external component include a through-opening designed to receive a screw for fastening the support component to a housing. The through-opening can be formed on the aforementioned crossbeam, in particular on a projection of the crossbeam. The projection is oriented essentially parallel to the top surface of the crossbeam or the capacitor.

[0014] Preferably, the through-hole is formed by a metal sleeve. The metal sleeve, which can of course also be designed as a metal ring, can be overmolded with plastic, in particular with the material of the base body. Firstly, the metal sleeve ensures a secure fit of the carrier component to the external component when assembled. Secondly, the metal sleeve can be used to create an electrically conductive connection, i.e., when the capacitor is designed as a Y-capacitor and has a ground connection. The ground connection can therefore be made via the metal sleeve, whereby, when assembled, a terminal of the capacitor is connected to ground, for example, the housing of a power converter, via a conductor component and the metal sleeve.

[0015] Preferably, the means for attaching at least one conductor component to the support component comprise elastically deformable shaped elements. The shaped elements are designed and optionally integrally formed on the base body in such a way that, regardless of the type and function of the capacitor, different connection variants can be accommodated with a universally applicable support component.

[0016] According to one embodiment, a first molded element has elastically deformable arm segments designed to pass through a through-opening in a conductor component when it is assembled and to come into contact with the conductor component. The cross-section of the through-opening in the conductor component is designed with respect to the outer diameter of the first molded element such that the arm segments engage with the conductor component in a frictional manner, thus releasably fixing the conductor component to the support component. It is conceivable that the arm segments have locking sections which, after passing through the opening, deform elastically outwards, thereby additionally engaging the conductor component in a form-fitting manner. In this case, the snap arms engage when the conductor component is mounted on the support component. The first molded element is preferably formed on a side of the crossbeam facing away from the capacitor.Preferably, the first form element serves in particular to enable the pre-assembly of a conductor component for grounding to the base body.

[0017] In one embodiment, two further forming elements are combined into a pair on the upper surface of the base body. These forming elements are designed to engage with the conductor component, at least frictionally, when it is mounted. Each forming element pair thus comprises two elastically deformable elements that can accommodate a conductor component and secure it, at least by friction. This allows for pre-assembly of the at least one conductor component onto the base body. Alternatively, the forming elements could have locking sections designed to allow the conductor component to be clipped between the two forming elements of a forming element pair. This would create an additional positive locking connection between the support component and the conductor component. However, this is only practical if the conductor component has a certain stiffness.

[0018] A support component-capacitor unit according to the invention for a power converter comprises a capacitor and a support component according to the first aspect of the invention, wherein the capacitor is at least partially surrounded by the support component. Depending on the design and application, the capacitor is provided for EMC optimization.

[0019] The internal geometry of the base body corresponds to the external geometry of the capacitor or capacitor housing to ensure a secure fit in the transverse direction and, optionally, in the circumferential direction. Thus, the support component rests against the outer circumference of the capacitor with its inner walls. The capacitor can be fixed in place by further fastening the support component to an external component. An optional cross member of the support component can rest against a top surface of the capacitor to also ensure a secure fit of the capacitor relative to the support component in the axial direction. The axial direction corresponds to the mounting direction of the support component on the capacitor. Preferably, the axial direction runs along the vertical axis of the capacitor.The means for attaching the support component to an external component allow the support component, including the capacitor, to be fixedly positioned on a housing of the power converter or on another external component.

[0020] The capacitor is, in particular, a discrete film capacitor: The capacitor comprises a winding, in particular a wound film, a housing, in particular a plastic housing, and a potting compound by which the winding is encapsulated in the housing. The winding is electrically connected to terminals, in particular solder pins, wherein the terminals, depending on the type of capacitor, are brought out of the housing for external connection to a ground and / or to a contact line.

[0021] Preferably, at least two conductor components are arranged on the support component and each is electrically connected to an associated terminal of the capacitor. The conductor components are preferably designed as thin-walled conductor sheets. One conductor sheet is connected to a first contact line, in particular a first busbar. The second conductor sheet is either connected to a second contact line, in particular a second busbar, so that the capacitor is an X-capacitor, or the second conductor sheet is connected to a ground, in particular a housing, so that the capacitor is a Y-capacitor.

[0022] The carrier component enables short electrical contact between the capacitor and the DC busbars or the housing. The shorter the distance between the capacitor and the contact line or the housing, the better the desired EMC properties. The conductor components are fixed to the carrier component by means of at least frictional fastening. In particular, the conductor components can be pre-assembled on the carrier component before being installed in the power converter, especially before being electrically connected to the corresponding contact lines or busbars, for example by welding, especially laser welding, soldering, or similar methods.

[0023] The ladder components may have pre-fabricated recesses, through-holes, bores and / or openings to facilitate mounting on the support component. These recesses, through-holes, bores, or openings are specifically adapted to the type and design of the means for at least frictionally securing at least one ladder component to the support component.

[0024] A power converter according to the invention comprises at least one carrier component-capacitor unit according to the second aspect of the invention. The power converter is, in particular, an inverter for powering an electric axle drive in an electric vehicle and / or a hybrid vehicle. The power converter is preferably a DC / AC inverter for converting a DC voltage into an AC voltage. Alternatively, the power converter can be configured as a DC / DC rectifier for converting a DC input voltage into a different DC output voltage. The power converter comprises power electronics with several semiconductor switching elements for generating an output current based on an input current provided by a voltage source by switching the semiconductor switching elements. The power converter can have several (for example, three) phase units, each of which is assigned to a phase current of the input current or the output current.In the case of an inverter, the input current is a DC current supplied by a DC voltage source, and the output current is an AC current with multiple phases. In the case of a rectifier, the input current is a DC input current supplied by a DC voltage source, such as a charging station or a vehicle battery or fuel cell, and the output current is a DC output current different from the DC input current, such as a charging current for charging a high-voltage vehicle battery, which is preferably supplied to the vehicle battery for this purpose.

[0025] Preferably, the power converter comprises several carrier component-capacitor units, wherein at least one of the capacitors is configured as an X-capacitor and at least one further capacitor, preferably at least two further capacitors, is / are configured as a Y-capacitor. In the case of an X-capacitor, the capacitor is connected via appropriate connection means to a positive-electrode contact conductor and a negative-electrode contact conductor. In the case of a Y-capacitor, the capacitor is connected to the positive-electrode contact conductor or the negative-electrode contact conductor on one side and to ground or earth on the other.

[0026] In a configuration with two Y-capacitors, the first Y-capacitor is connected between the first contact lead and ground. The second Y-capacitor is connected between the second contact lead and ground. These Y-capacitors are therefore positive-side and negative-side Y-capacitors, respectively, and are considered common-mode capacitors. In contrast, an X-capacitor is connected between the first and second contact leads and is considered a differential-mode capacitor.

[0027] The capacitors are intended for EMC optimization. In particular, they smooth current, converting irregular or highly fluctuating electrical currents into a more stable form. To improve EMC performance, the capacitors are positioned as close as possible to potential sources of interference.

[0028] The invention will now be described in more detail with reference to the attached figures, in which: Fig. 1 a schematic perspective view of a - only partially shown - power converter with a support component according to the invention and a Y-capacitor according to a first variant for connecting conductor components; Fig. 2 a schematic perspective view of the support component-Y-capacitor unit according to Fig. 1 during an assembly process; Fig. 3a a schematic perspective view of the support component-Y-capacitor unit according to a second connection variant; Fig. 3b a schematic perspective view of the support component-Y-capacitor unit according to a third connection variant; Fig. 3c a schematic perspective view of the support component-Y-capacitor unit according to a fourth connection variant; Fig. 4 a schematic top view of an X-capacitor according to an alternative embodiment and the support component according to the invention in a fifth connection variant; Fig. 5a a schematic perspective representation of the support component-X-capacitor unit according to a sixth connection variant; Fig. 5b a schematic perspective view of the support component-X-capacitor unit according to a seventh connection variant; and Fig. 5c shows a schematic perspective representation of the support component-X-capacitor unit according to an eighth connection variant; where identical or similar components or elements are provided with the same reference numeral unless otherwise specified.

[0029] Fig. Figure 1 shows a current converter 100 according to the invention for an electric axle drive - not shown here only partially.

[0030] The power converter 100 serves to supply power to the electric axle drive of a motor vehicle (not shown here). Such a power converter 100 typically comprises power electronics with multiple phase units, each of which includes a power module configured, for example, as a half-bridge module. Each power module can, in turn, have a module high-side and a module low-side, each comprising one or more parallel-connected semiconductor switching elements. Thus, each power module provides a complete half-bridge circuit. Alternatively, several half-bridge modules can be provided per phase unit. For the sake of simplicity, the structure of the power converter 100 will not be described in detail below.

[0031] The exemplary power converter 100 includes a capacitor 105 for EMC optimization. Furthermore, the power converter 100 has a busbar arrangement comprising a positive electrode-side contact conductor (DC-Plus busbar) and a negative electrode-side contact conductor (DC-Minus busbar).

[0032] In the first embodiment according to Fig. In Figure 1, capacitor 105 is a Y-capacitor. Capacitor 105 has two solder pins 110 and 115 as connection points. The first solder pin 110 is soldered to a sheet-like first conductor 120, which, when assembled, is electrically connected to a positive-electrode contact conductor 125. Alternatively, the first conductor 120 can be electrically connected, when assembled, to a negative-electrode contact conductor (not shown here). The second solder pin 115 is soldered to a sheet-like second conductor 130, which, when assembled, is electrically connected to ground, in this case, a housing 135 of the power converter 100. Alternatively, the solder pins 110 and 115 can be laser-welded to the conductor sheets. Other known connection methods for creating an electrically conductive connection are also conceivable.A support component 140 according to the invention is attached to the capacitor 105 and forms a support component-capacitor unit which is fastened to the housing 135 by means of a screw 145.

[0033] Fig. Figure 2 shows the support component-capacitor unit, consisting of the capacitor 105, which in this example is a Y-capacitor, and the support component 140, before the assembly of the conductor components 120 and 130. The support component 140 is made of plastic and is placed onto the capacitor 105 from above, so that a frame-like base body 205 of the support component 140 surrounds the capacitor 105 circumferentially. The base body 205 is adapted to the outer shape of the capacitor 105. In this case, the capacitor 105 is essentially cuboid in shape, with the base body 205 correspondingly shaped as a square sleeve. The height of the base body 205 can be chosen as desired.

[0034] A crossbeam 215 is integrally molded onto a top surface 210 of the base body 205. This crossbeam connects the longer side walls 217, 218 of the base body 205 and, after being attached, rests against a top surface 220 of the capacitor 105. Thus, the support component 140 is attached to the capacitor 105 like a cap, with recesses 225 on the sides of the crossbeam 215 for the insertion of solder pins 110, 115. The top surface 210 of the base body 205 and the top surface 220 of the capacitor 105 correspond to, or are assigned to, the side of the capacitor 105 from which the solder pins 110, 115 protrude from the capacitor 105.

[0035] The base body 205 has on its ring-shaped upper surface 210 means for at least frictionally fastening the ladder component 120, 130 to the support component 140 as well as means for fastening the support component 140 to an external component, here the housing 135. Fig. 1, on.

[0036] In this case, a projection 230 is integrally formed on the crossbeam 215. A metal sleeve 235 with a through-opening 240 is arranged on this projection and is overmolded with plastic. This sleeve serves as a means for attaching the support component 140 to the external component. The projection 230 is associated with the first side wall 217 of the base body 205. The projection 230 extends transversely to the longitudinal direction or insertion direction of the support component 140 onto the capacitor 105. The projection 230 is flush with the crossbeam 215. The metal sleeve 235 is designed to accommodate the screw 145 for attaching the support component 140 to the housing 135. The capacitor 105 is grounded according to... Fig. 1 via the second conductor component 130, which is soldered to the second solder pin 115 on one side and pressed against the metal sleeve 235 on the other by means of the screw 145, whereby the metal sleeve 235 in turn contacts the housing 135.

[0037] The means for at least frictionally securing the conductor components 120, 130 to the support component 140 also include elastically deformable shaped elements. A first shaped element 245, which in this example is arranged approximately centrally on a side of the crossbeam 215 facing away from the capacitor 105, has several, in this case three, arm segments 250 that are elastically deformable radially inwards, i.e., relative to each other. These arm segments are designed to be guided through an opening in the second conductor component 130 during assembly (the opening is not visible here). The inner diameter of the opening is selected with respect to the outer diameter of the first shaped element 245 formed by the arm segments 250 such that the arm segments 250 engage frictionally with the second conductor component 130, and the second conductor component 130 is detachably fixed to the support component 140.

[0038] Furthermore, several, in this case four, pairs of form elements 255 ad are arranged around the circumference of the ring-shaped upper surface 210 of the base body 205. The number and arrangement of the form element pairs 255 ad can be chosen arbitrarily, whereby the form element pairs 255 ad can be arranged distributed around the ring on the upper surface 210 of the base body 205. In this case, two form element pairs 255a, 255b are assigned to the second side wall 218 of the base body 205, with the cross member 215 arranged between the two form element pairs 255a, 255b. In addition, one further form element pair 255c, 255d is assigned to each of the short side walls 257, 258 of the base body 205.

[0039] Each pair of form elements 255 ad comprises a second form element 260 and a third form element 265, wherein the form elements 260, 265 of the respective pair of form elements 255 are configured to be in at least frictional engagement with the corresponding conductor components 120, 130 when the conductor components 120, 130 are assembled. Thus, a simple, detachable connection can be created. In particular, the support component 140 can be reused.

[0040] After Fig. 2 in conjunction with Fig. 1. The first conductor component 120 is fixed to the first form element pair 255a and soldered to the first solder pin 110. The first conductor component 120 is also electrically connected to the positive electrode-side contact conductor 125.

[0041] Based on the Fig. 3a, Fig. 3b and Fig. Section 3c clarifies that the proposed support component 140 can be used universally for different installation space requirements and other conditions without requiring a new design and / or construction of the support component 140. The example according to Fig. 3a essentially corresponds to the embodiment according to Fig. 1, where here the first conductor component 120 is instead fixed to the third form element pair 255c. These figures also show that the second conductor component 130 comprises several bores, of which according to Fig. 3a A first bore 300 has an inner diameter identical to that of the through-hole 240, a second bore 305 for connection to the first form element 245, and a third bore 310 for connection to the second solder pin 115. The first conductor component has only one bore 315 for connection to the first solder pin 115. The number and design of the bores can be adapted depending on the type of conductor component and the connection variant. Therefore, the bores are not labeled with reference numerals in the following figures.

[0042] After Fig. In 3b, the connections of the conductor components 120 and 130 are reversed. Accordingly, the first conductor component 120 is soldered to the second solder pin 115 and at least frictionally connected to the form elements 260 and 265 of the second form element pair 255b. The second conductor component 130 is connected to the first solder pin 110 on the other side. Alternatively, the first conductor component 120 can also be fixed to the fourth form element pair 255d, as shown in Fig. 3c is shown.

[0043] In the further embodiment according to Fig. 4 The power converter 100 has a busbar arrangement comprising a positive electrode-side contact conductor 400 (DC-plus busbar) and a negative electrode-side contact conductor 405 (DC-minus busbar). Furthermore, the power converter 100 includes the carrier component-capacitor unit, wherein the capacitor 105 is configured as an X-capacitor.

[0044] After Fig. The first conductor component 120 is soldered to the first solder pin 110 and fixed to the first form element pair 255a. The first conductor component 120 is also electrically connected to the positive electrode-side contact conductor 400. The second conductor component 130 is electrically connected in parallel to the second solder pin 120 and frictionally attached to the second form element pair 255b. The second conductor component 130 is electrically connected at its end to the negative electrode-side contact conductor 405.

[0045] The Fig. 5a, Fig. 5b, and Fig. 5c illustrate of Fig. Four different connection options allow the support component 140 to be adapted to different spatial conditions and requirements. After Fig. 5a is the first conductor component 120 in contrast to Fig. 4 on the third pair of form elements 255c, at least frictionally fixed. After Fig. 5b is the second conductor component 130 in contrast to Fig. 4 detachably attached to the fourth pair of form elements 255d. After Fig. 5c are unlike Fig. 4 the first conductor component 120 is arranged force-fit on the third form element pair 255c and the second conductor component 130 on the fourth form element pair 255d.

[0046] The support component 140 is therefore suitable for X-capacitors (see Fig. 4 to 5c) as well as for Y capacitors (see Fig. 1 and 3a to 3c) can be used equally, provided that the capacitors are essentially identical in their external dimensions.

[0047] For all embodiments, the conductor components 120, 130 are pre-assembled on the carrier component-capacitor unit, thus forming a separately manageable unit that can only be installed in the power converter 100 and connected to the contact conductors in a subsequent step. A carrier component-capacitor unit therefore comprises, in addition to the capacitor 105 and the carrier component 140, at least two conductor components 120, 130, which can be fixed to the carrier component depending on the requirements and available installation space. The geometry and shape of the conductor components 120, 130 can be adapted to the specific conditions and requirements.

[0048] It is understood that the power converter 100 can have several X and / or Y capacitors 105 as described above. Accordingly, the previously shown embodiments can be readily combined with one another. Reference sign 100 power converters 105 Capacitor 110 solder pins 115 solder pins 120 first ladder component 125 positive electrode-side contact conductor 130 second ladder component 135 cases 140 support component 145 screw 205 Basic body 210 Top side of the base body 215 crossbeams 217 Long side wall of the base body 218 Long side wall of the base body 220 Top of the capacitor 225 recess 230 lead 235 metal sleeve 240 Through opening 245 First formal element 250 arm segment 255a-d Form element pair 257 Short side wall of the base body 258 Short side wall of the base body 260 Second form element 265 Third formal element 300 bore 305 bore 310 bore 315 bore 400 positive electrode-side contact conductor 405 negative electrode-side contact conductor

Claims

[1] Support component (140) for a capacitor (105), comprising a frame-like base body (205) designed to be plugged onto the capacitor (105), wherein the base body (205) comprises means for at least frictionally securing at least one conductor component (120, 130) to the support component (140) and means for securing the support component (140) to an external component, wherein the means for at least frictionally securing the at least one conductor component (120, 130) to the support component (140) and the means for securing the support component (140) to the external component are arranged on a top surface (210) of the base body (205), characterized by , that a cross member (215) is arranged in one piece on the upper surface (210) of the base body (205), which connects two opposite side walls (217, 218) of the base body (205) together. [2] Support component (140) according to claim 1, wherein the base body (205) is made of plastic. [3] Support component (140) according to one of the preceding claims, wherein the means for fastening the support component (140) to the external component comprise a through-opening (240) which is configured to accommodate a screw (145) for fastening the support component (140) to a housing (135). [4] Support component (140) according to claim 3, wherein the through-opening (240) is formed by a metal sleeve (235). [5] Support component (140) according to one of the preceding claims, wherein the means for at least frictionally securing at least one conductor component (120, 130) to the support component (140) comprise elastically deformable form elements (245, 260, 265). [6] Support component (140) according to claim 5, wherein a first form element (245) has elastically deformable arm segments (250) which are arranged to be guided through a through-opening of the ladder component (120, 130) in the assembled state of a ladder component (120, 130) and to come into contact with the ladder component (120, 130). [7] Support component (140) according to claim 5 or 6, wherein on a top surface (210) of the base body (205) two further form elements (260, 265) are combined to form a pair of form elements (255a-d), wherein the form elements (260, 265) of the pair of form elements (255a-d) are arranged to be in at least frictional contact with the conductor component (120, 130) in the assembled state. [8] Carrier component-capacitor unit for a power converter (100), comprising a capacitor (105) and a carrier component (140) according to one of the preceding claims, wherein the capacitor (105) is at least partially surrounded by the carrier component (140). [9] Carrier component-capacitor unit according to claim 8, wherein an inner circumference of the base body (205) is designed to be complementary to an outer shell surface of the capacitor (105). [10] Carrier component-capacitor unit according to claim 8 or 9, wherein at least two conductor components (120, 130) are arranged on the carrier component (140) and each is in electrical contact with an associated connection means of the capacitor (105). [11] Power converter (100) for an electric axle drive, comprising at least one carrier component-capacitor unit according to one of claims 8 to 10. [12] Power converter (100) according to claim 11, comprising several carrier component-capacitor units, wherein at least one of the capacitors (105) is configured as an X-capacitor and at least one further of the capacitors (105) is configured as a Y-capacitor.

Images