Bus bar, method for manufacturing a bus bar, and method for connecting an electronic component to a bus bar

Abstract

A bus bar (1), in particular a laminated bus bar (1), is configured for mounting an electronic component, in particular a passive electronic component, on the bus bar (1), the bus bar (1) comprising a first conductive layer (10) having a main body (3) and at least one insertion region (30), the at least one insertion region (30) is designed for inserting a contact element of an electronic component, in particular a pin (2) of an electronic component, into the bus bar (1), the insertion region (30) comprising:-a central section (32) having a receiving recess (31) for receiving the contact element,-a bridging section (8), which is designed for bridging the contact element in the central section (32), the central section (32) has a bridging section (8) for connecting the central section (32) to the body (3) of the first conductive layer, the bridging section (8) extending between the body (3) and the central section (32) having a first length (L1) along an extension direction (E) of the bridging section and a first width (W1) measured along a direction perpendicular to the extension direction (E), the ratio of the first width (W1) to the first length (L1) being less than 0.5.

Description

Technical Field

[0001] The invention relates to a busbar and a method for producing a busbar, in particular a busbar on which a plurality of capacitors can be arranged, and a method for connecting an electronic component to a busbar. Background Art

[0002] Laminated busbars typically include layers of processed copper laminated into a unified structure separated by thin dielectric materials. Examples of laminated busbars can be found in CN 203 504 394U, CN 104 022 414A1 or CN 202 474 475U. An "insert" area is typically included in the busbar so that the electrodes of electronic components such as capacitors are directly connected to different conductive layers, wherein each of these conductive layers is assigned to a type of pole provided by each capacitor. Typically, the capacitor is connected to the insert area by inserting a pin into the hole of the insert area. Subsequently, the pin is bonded to the busbar, for example by soldering and / or welding.

[0003] However, a certain amount of energy is required to achieve an adhesive connection between the busbar and the pin. Furthermore, the creation of an adhesive bond may result in a bend protruding from the busbar, which normally has a flat surface, particularly when the connection is achieved by soldering. Such a bend may be a problem in certain areas of application of the busbar. Furthermore, when the pin area is heated, a large amount of heating energy is lost to the flat layer of conductive material of the busbar.

[0004] Therefore, it has proven to be advantageous to provide an insertion region, as discussed in EP 3 599 676 B1. Summary of the invention

[0005] In view of the above, it is an object of the present invention to further improve the busbars known from the prior art, in particular with regard to their production and their potential fields of application.

[0006] This object is achieved by a busbar according to claim 1, a method for producing a busbar according to claim 14 and a method for connecting an electronic component to such a busbar according to claim 15. Preferred embodiments are contained in the dependent claims, the description and the drawings.

[0007] According to a first aspect of the present invention, a busbar, in particular a laminated busbar, is provided, the busbar being configured for mounting electronic components, in particular passive electronic components, on the busbar, wherein the busbar comprises a first conductive layer having a body and at least one insertion region, the at least one insertion region being configured for inserting contact elements of the electronic components, in particular pins of the electronic components, into the busbar, wherein the insertion region comprises:

[0008] a central section having a receiving recess for receiving a contact element,

[0009] - a first recess and a second recess surrounding the central section, and

[0010] a bridging section for connecting the central section with the body of the first conducting layer,

[0011] In which, the bridging section extending between the main body and the central section has a first length along the extension direction of the bridging section and a first width measured along a direction perpendicular to the extension direction, wherein the ratio of the first width to the first length is less than 0.5, preferably less than 0.4, and most preferably less than 0.3.

[0012] In contrast to the insertion area of ​​the prior art, the present invention proposes an insertion area with a bridging section, which is formed as a relatively narrow and long, i.e., narrow and elongated bridging section. In particular, the bridging section is formed by a strip-shaped and / or web-shaped section extending from the central section to the body of the first conductive layer. Surprisingly, the results show that by producing such a sized bridging section, thermal energy can be stored in the insertion area during the brazing process, in particular in the central section and / or the bridging section. In particular, higher temperatures can be generated in the central section in a shorter time compared to the methods known in the prior art. Therefore, reducing heat energy losses during the brazing process by using the bridging element of the present invention has benefits regarding the efficiency of the brazing process, especially in terms of the amount of energy required for the brazing process. Compared with the insertion area of ​​the prior art, less energy is consumed via the bridging section during the brazing process, and therefore the brazing process can be achieved by using less energy and in a shorter period of time. This also reduces the likelihood of damage to the electronic components connected to the busbar by the soldering process, since the electronic components are no longer exposed to the high temperatures that are necessary to perform the soldering process by using the bridging elements known from the prior art.

[0013] Preferably, the first conductive layer comprises an insertion region, which is arranged inside the base body. In other words, the insertion region is located, for example, in the middle of the first conductive region, rather than in the edge region or at the border of the first conductive layer, and the insertion region is especially combined for receiving contact elements, such as pin elements of capacitors.

[0014] The thickness of the first conductive layer, the bridging section, the main body and / or the central section is between 0.1 mm and 6 mm, preferably between 0.3 mm and 4 mm, and most preferably between 0.5 mm and 3 mm. In addition, it is provided that the first conductive layer is made of copper and / or aluminum. In particular, there is a benefit in producing a busbar made of aluminum, because the busbar is a lightweight form of the busbar. Preferably, at least one first conductive layer and / or at least the second conductive layer is made of bare metal, such as copper or aluminum. In particular, the thickness of the busbar measured in a direction perpendicular to the main extension plane is between 0.5 mm and 5 mm, more preferably between 0.3 mm and 3 mm, and most preferably between 0.5 mm and 3 mm. In particular, a thickness between 0.5 mm and 3 mm is advantageous for busbars used in converters. Because the power transmitted in a vehicle is not as high as in other busbar applications, thin conductors can be used in such applications.

[0015] It is also conceivable that the busbar comprises a third layer, in particular a third conducting layer. The details and advantages explained in the context of the first conducting layer and the second conducting layer also apply analogously to the third conducting layer.

[0016] Preferably, the busbar is a flat product extending in a main extension plane or bent into a 3D structure, such as a U-shape, a Z-shape or an L-shape. The first conducting section and / or the second conducting section are preferably copper or aluminum sheets, in particular bare copper or aluminum sheets mainly defining the main extension plane.

[0017] Another preferred embodiment proposes a first conductive layer and / or a second conductive layer, i.e. the corresponding base body, central section and / or bridging section, made of aluminum or copper and preferably further coated with a tin layer and / or a nickel layer. This covering by a tin-plated layer or a nickel-plated layer avoids corrosion of the components of the busbar. In addition, it is preferably provided that the busbar comprises a first conductive layer and a second conductive layer, each conductive layer extending mainly parallel to the main extension plane and stacked on top of each other along the stacking direction. Preferably, the first conductive layer and the second conductive layer respectively comprise an insertion area having the above-mentioned specifications. In particular, both the first conductive layer and the second conductive layer have a relatively narrow and long bridging section. It is conceivable that the central section of the first conductive layer and / or the second conductive layer is arranged in the same plane as the plane of the main body, or, alternatively, the central section is located in a parallel plane spaced apart from the plane of the main body.

[0018] Furthermore, it is preferably provided that the first and second recesses and / or the receiving recesses are formed as cutouts in the first and / or second conducting layer. Preferably, such cutouts extend through the entire thickness of the first and / or second conducting layer and thus reach from the top side of the first conducting layer to the bottom side of the first and / or second conducting layer. Alternatively, it is also conceivable that the first and / or second recesses and / or the receiving recesses are formed as regions of reduced thickness of the conducting layer.

[0019] According to a preferred embodiment, it is provided that the bridging section is arranged at least partially between the first recess and the second recess in a radial direction starting from the middle of the central section. This arrangement of the first recess and the second recess means that the bridging section does not extend only in the radial direction. This is beneficial because this arrangement allows the creation of a relatively long and narrow bridging section without extending the necessary space required for the insertion area. Thus, a compact insertion area can be created: the insertion area is integrated into the first conducting section while having a narrow and long bridging section.

[0020] Preferably, it is provided that the first recess and / or the second recess has a maximum second length measured in a radial direction starting from the middle of the central section, wherein the first length is longer than the second length, preferably at least 1.3 times, more preferably at least 1.6 times, and most preferably 2 times longer than the second length. It has been shown that the first maximum length and the second maximum length can be dimensioned to produce a compact configuration for the bridging section and the first and second recesses, which is also mechanically stable for producing an insertion area that can also withstand mechanical pressures, which may be suitable during a joining process, in particular a brazing process. At the same time, the dimensions reflect the relatively narrow and long design of the bridging section.

[0021] Preferably, it is provided that the value of the first width of the bridge section is between 0.2 mm and 2.5 mm, more preferably between 0.55 mm and 1.5 mm, and most preferably between 0.65 mm and 1.1 mm. Preferably, it is provided that the first width is determined as an average value along the extension of the bridge section in the extension direction of the bridge section.

[0022] Preferably, it is arranged that the extension direction is inclined to the radial direction starting from the middle of the central section. Preferably, the extension direction of the bridge section is inclined or angled at an angle of about between 10° and 75°, more preferably between 15° and 60°, and most preferably between 20° and 50°. Thus, a compact insertion area is formed.

[0023] Preferably, it is arranged that the busbar comprises a second conducting layer. Preferably, the second conducting layer further comprises an insertion region having a bridging section, the bridging section having a ratio between the first width and the first length as discussed above. In particular, the first conducting layer and the second conducting layer are stacked on top of each other and are preferably spaced apart from each other by an insulating layer. Thus, one pin or contact element of the electronic component can be in contact with the second conducting layer, while another pin of the conductor element is in contact with the first conducting layer, wherein the contact element passes through the stacking arrangement of the first conducting layer and the second conducting layer for contacting the respective conducting layer.

[0024] Preferably, it is arranged that the first recess and the second recess comprise segments with a second length that varies, wherein, along the circumferential direction around the central segment, the second length of the first recess and / or the second recess measured in the radial direction varies within the segment with a varying width. Compared to the recesses known from the prior art, the first recess and the second recess are mainly formed by segments with a second length that varies. For example, the ratio of the width of the segment with a second length that varies along the circumferential direction to the total width of the first recess and the second recess extending along the circumferential direction is greater than 0.5, preferably greater than 0.7, and most preferably greater than 0.8. In other words: the second length of the recess measured in the radial direction varies almost entirely along the dimension of the second recess or the first recess along the circumferential direction. Preferably, it is arranged that the first recess and the second recess form an end zone that is acutely angled, i.e., there is no end segment with a circular shape along the circumferential direction.

[0025] Preferably, it is provided that the maximum second length of the first recess and / or the second recess measured along the radial direction has a value between 1 mm and 10 mm, preferably between 2 mm and 8 mm, and most preferably between 2.5 mm and 6 mm.

[0026] Preferably, it is provided that the first width of the bridge section is constant along the extension direction of the bridge section. Alternatively, it is also conceivable that the first width of the bridge section varies along the extension direction. For example, the first width decreases with increasing distance from the central section of the insertion area. Alternatively, it is also conceivable that the first width is adjusted, i.e. increases and decreases, with increasing distance from the central section. Preferably, it is provided that the first recess or the second recess is substantially crescent-shaped.

[0027] Preferably, the central region has a circular or oval shape. Furthermore, it is provided that the first recess and the second recess are shaped and / or dimensioned in the same manner. In other words: the first recess and the second recess have the same shape and / or the same dimensions. Thus, a fairly symmetrical material distribution is achieved in the insertion region, which supports mechanical strength and uniform thermal distribution.

[0028] In particular, the central region can be covered with nickel and / or tin. Covering the central region is advantageous because these regions are usually in contact with air and / or contact elements. Therefore, the central region is prone to corrosion, which can be avoided by nickel and / or tin plating / covering.

[0029] Another aspect of the invention is an insertion region for a busbar according to the invention. All features discussed for the busbar apply analogously to the insertion region, and all features discussed for the insertion region apply analogously to the busbar. In particular, it is conceivable that such an insertion region is provided and inserted into a corresponding recess of the first conductive layer.

[0030] According to another aspect, a method for manufacturing a busbar according to the invention is provided, wherein the first recess and / or the second recess is cut out of a metal layer forming a first conductive layer of the busbar. For example, it is also conceivable that the first recess and / or the second recess is formed by a stamping process and / or a laser cutting process. It is also conceivable that, after producing the pre-shape of the first recess and / or the second recess, the bridging section is deformed by rotating the central section so that the bridging section is twisted for forming the desired shape of the bridging section. All features discussed and specified in the context of the busbar apply analogously to the method for manufacturing the busbar.

[0031] Another aspect of the invention is a method for connecting an electrical or electronic component to a busbar, wherein a contact element of the electronic component is inserted into an insertion region of the busbar, wherein the contact element is soldered and / or welded to the insertion region, preferably automatically by a robot. All features discussed in the context of the busbar apply analogously to the method of connecting an electrical component to a busbar, and all features discussed in the context of the method of connecting an electrical component to a busbar apply analogously to the busbar.

[0032] In the absence of explicit description, individual embodiments or various aspects and features of individual embodiments may be combined or exchanged with one another without limiting or expanding the scope of the described invention, as long as such combination or exchange is meaningful and within the concept of the invention. Where applicable, the advantages described with respect to one embodiment of the invention are also the advantages of other embodiments of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In the attached picture:

[0034] Figure 1 A perspective view schematically shows a bus bar according to a preferred embodiment of the present invention,

[0035] Figure 2 Schematically shows Figure 1 Side view of the middle busbar,

[0036] Figure 3 schematically shows a first conducting layer including an insertion area for a bus bar according to a preferred embodiment,

[0037] Figure 4 a schematically shows in top view the insertion area of ​​a busbar according to a preferred embodiment,

[0038] Figure 4 b schematically shows the insertion area of ​​the busbar according to a preferred embodiment in a cross-sectional side view, and

[0039] Figure 5 A bus bar according to another preferred embodiment of the present invention is schematically shown. DETAILED DESCRIPTION

[0040] exist Figure 1 , a busbar 1 according to an exemplary embodiment of the present invention is illustrated. In particular, the busbar 1 is configured as a laminated busbar including at least one insulating layer 15 (see Figure 2 ) are at least a first conductive layer 10 and a second conductive layer 20 separated by a bus bar 1. The first conductive layer 10 and the second conductive layer 20 are configured to collect and conduct current caused by a plurality of capacitors 5, which are arranged on the bus bar 1 and connected to the first conductive layer 10 and the second conductive layer 20, respectively.

[0041] In particular, the first conductive layer 10 and / or the second conductive layer 20 are made of metal, in particular copper and / or aluminum. Preferably, the first conductive layer 10, the second conductive layer 20 and the insulating layer 15 extend parallel to each other and along a plane with respect to the main extension plane M( Figure 2 ) are stacked on top of each other in a stacking direction S perpendicular to the busbar 1. In the illustrated embodiment, eight capacitors 5 are arranged on the busbar 1. The first conductive layer 10 and the second conductive layer 20 are respectively connected to one electrode of each of the capacitors 5. In order to provide power, the first conductive layer 10 and / or the second conductive layer 20 each include at least one terminal 17 for transmitting a certain voltage provided by the capacitor 5 arranged on the busbar 1. In addition, it is provided that the first conductive layer 10 extends in a first plane, and preferably the corresponding terminal 17 of the first conductive layer 10 extends in the first plane.

[0042] exist Figure 2 In the figure, a configuration with Figure 11 is a side view of a busbar 1 of capacitors 5 on a busbar 1 of FIG. As shown in the figure, the connection between each capacitor 5 and the first conductive layer 10 and the second conductive layer 20 is realized through pins 2. Preferably, each capacitor 5 has a pin 2 assigned to the positive pole of the capacitor 5 and a pin 2 assigned to the negative pole of the capacitor 5. Both pins 2 pass through the busbar 1, wherein one pin 2 of each capacitor 5 is connected to the first conductive layer 10 and the other pin 2 is connected to the second conductive layer 20. It is arranged that all negative poles of the capacitors 5 are connected to the first conductive layer 10, and all positive poles of the capacitors 5 are connected to the second conductive layer 20. In order to connect each pin 2 to the first conductive layer 10 and the second conductive layer 20, an insertion area 30 ( Figure 3 ). Preferably, an insertion area 30 is provided for each pin 2. The insertion area 30 comprises a hole forming a receiving recess 31, the hole being adapted in its shape to the form of the pin 2 so that the pin 2 can be inserted into the hole by a movement in a direction perpendicular to the first plane and / or parallel to the stacking direction S. In the case of a cylindrical pin, the hole can have a circular shape. It is also conceivable that the pin 2 has a rectangular cross section and the hole is formed rectangular in the same manner. Preferably, the cross section of the hole and the pin 2 is realized according to the key lock principle.

[0043] exist Figure 3 , the insertion region 30 of the first conducting layer 10 is illustrated in detail in a perspective view. In this embodiment, the insertion region comprises a central section 32 with a receiving recess. The first recess 4 and the second recess 6 surround the central section 32. The body 3 of the first conducting layer 10 is connected to the central section via the bridging section 8. Thus, an electrical connection can be provided between the body 3, which is substantially flat and extends parallel to a plane parallel to the main extension direction of the busbar 1. Figure 3 In the embodiment of , the central section 32 of the insertion region 30 extends in a plane parallel to the main extension direction of the busbar and the body, wherein the plane of the central section 32 is spaced apart from the plane of the body 3 .

[0044] exist Figure 4, a detailed view of an insertion area 30 according to the prior art is illustrated in a top view. The insertion area 30 is surrounded by a first recess 4 and a second recess 6. The first recess 4 and the second recess 6 are intended to limit the heat transfer during the brazing process of connecting the pin 2 to the insertion area 30. Without such a recess 4, the heat generated by the brazing would be directly transferred to the body 3 of the first conducting layer 10 and could not be used for brazing. The electrical connection between the first conducting layer 10 and the insertion area 30 is established by a bridging element 8, which is located between the first recess 4 and the second recess 6 along the circumferential direction CD. In the present embodiment, two extension elements 8 extending parallel to each other along a common line and along the radial direction are provided. Preferably, the central section 32 of the insertion area 30 has a disc-like shape.

[0045] Preferably, it is arranged that along the surrounding path SP around the insertion area 30, the following parts are arranged:

[0046] a first portion 41 which is assigned at least to the first recess 4 or at least to the recesses 4 , 6 ; and

[0047] a second portion 42 which is assigned to the bridging element 8 ,

[0048] Therein, the surrounding path SP corresponds in particular to the outer shape 45 of the central section 32 of the insertion region 30 and / or to the shape of the receiving recess 31 of the insertion region 30. For example, the surrounding path SP corresponds to a circle concentric with the hole of the insertion region 30.

[0049] exist Figure 5 , an insertion region 30 for a busbar 1 according to a preferred embodiment of the invention is shown. Surprisingly, it has been shown that by modifying the shape of the bridging section 8, the amount of heat stored in the bridging section 8 and thus in the region of the central section 32 of the insertion region 30 during the brazing process can be increased. In particular, the bridging section 8 arranged to extend between the body 3 and the central section 32 has a first length L1 along an extension direction E of the bridging section 8 and a first width W1 measured along a direction perpendicular to the extension direction E, wherein the ratio of the first width W1 to the first length L1 is less than 1, preferably less than 0.5, and more preferably less than 0.3.

[0050] In other words: the results show that a relatively narrow bridge section 8 has the following benefit: the energy transfer, i.e. the heat transfer, via the bridge section 8 during the brazing process is significantly reduced. As a result, the heat is stored in the central section 32 and the bridge section 8 and is not lost due to heat transfer to the body 3 of the first conducting layer 10. In fact, the results show that even a temperature of about 275° C. can be established in the section of the insertion area 30 comprising the bridge section 8 and the central section 32. Compared to such high temperatures, Figure 4 The bridge section 8 shown in b is only able to establish a temperature of approximately 210° C. during the soldering process. This represents a significant improvement with regard to the ability to store energy in the region of the receiving recess 31. Thus, the energy used to perform the soldering process can be reduced and the chances for successfully soldering the pin or contact element to the first conducting section, i.e. to the receiving recess 31, can be significantly improved.

[0051] In particular, it is provided that the extension direction E does not correspond to the radial direction R starting from the middle of the central section 32. In other words: the bridging section 8 does not extend parallel to the radial direction R starting from the middle of the central section 32. Preferably, the extension direction E of the bridging section 8 is inclined or angled relative to the radial direction R, preferably approximately inclined or angled at an angle of between 10° and 75°, preferably between 15° and 60°, and most preferably between 20° and 50°. In particular, it is provided that the bridging section 8 is arched in a plane that is mainly parallel to the main extension plane. In particular, it is provided that the bridging section 8 and the central section 32 and the main body 3 are arranged in a common plane parallel to the main extension plane M. Alternatively, it is also conceivable that the central section 32 is arranged in a plane that is parallel to the plane of the main body 3 and spaced apart from the plane of the main body 3.

[0052] Since the bridging section 8 extends in a direction that is not parallel to the radial direction R, the bridging section 8 is at least partially arranged between the first recess 4 and the second recess 6 in the radial direction R. In other words: at least a section in which the first recess 4 and the second recess 6 overlap is provided in the radial direction R. As a result of this arrangement, in particular with regard to the bridging section 8 extending at an angle relative to the radial direction R, a relatively long and narrow, i.e. elongated, bridging section 8 is provided without extending the required space of the insertion area 30. Thus, a compact insertion area 30, in particular a compact area comprising the central section 32 and the bridging section 8, can be combined, and at the same time a relatively long and narrow bridging section 8 is provided for generating benefits with regard to heat storage during the brazing process.

[0053] Furthermore, it is preferably provided that the first recess 4 and / or the second recess 6 has a maximum second length L2 measured along the radial direction R. Preferably, the first length L1 is longer than the second length L2, preferably at least 1.3 times, more preferably at least 1.6 times, and most preferably 2 times longer than the second length L2. The results show that, with such a selection of dimensions, the bridge element 8 has a sufficient length for producing a positive effect with regard to heat storage and at the same time providing mechanical stability for the central section 32 and the insertion area 30 incorporated into the first conducting layer 10.

[0054] Preferably, it is provided that the insertion area 30 is comprised in the first conducting layer 10, in particular incorporated into a central section 32 of the first conducting layer 10. In other words: the insertion area 30 is located within the first conducting layer 10, preferably depending on the size of the electronic component intended to be inserted into the receiving recess 31 of the insertion area 30.

[0055] Preferably, it is arranged that along the circumferential direction CD, the second length L2 measured along the radial direction R starting from the middle of the central section 32 changes along the circumferential direction CD. In particular, a section with a changing second length L2 is provided, in which the first recess 4 and / or the second recess 6 changes the second length L2 of the first recess 4 and / or the second recess 6 along the circumferential direction CD. In particular, this is in contrast to the prior art, in particular from Figure 4 This is different from the known recesses in which only the front end of the recess has some varying second length L2 measured along the radial direction R. Figure 5 The second length L2 of the first recess 4 and / or the second recess 6 of the embodiment mainly varies along the entire extension of the first recess 4 and / or the second recess 6 in the circumferential direction CD, in particular the first recess 4 and the second recess 6 have tapered end regions, which form acute angled end regions of the first recess 4 and the second recess 6 along the circumferential direction CD. In particular, the maximum second length L2 is shifted from the middle of the first recess 4 and / or the second recess 6 along the circumferential direction CD. Preferably, the first recess 4 and the second recess 6 are arranged to have the same or similar shape and size. Preferably, the shape of the first recess 4 and / or the second recess 6 is a substantially crescent shape.

[0056] Preferably, it is provided that the first width W1 of the bridging section 8 is predominantly constant, i.e. the first width W1 is constant along an extension that is at least 0.5 times the first length L1. Alternatively, it is also conceivable that the first width W1 of the bridging section 8 varies along the extension direction E and, for example, decreases with increasing distance from the central section 32. With regard to the first width W1, it is preferably provided that the first width W1 is determined as an average first width W1 along the extension direction E of the bridging section 8 extending from the central section 32 to the body 3 of the first conducting section. Furthermore, it is preferably provided that the first conducting layer 10 and the second conducting layer 20 each have at least one insertion region 30 according to the described specifications, said at least one insertion region 30 comprising a bridging section 8 formed by a long and narrow section.

[0057] Preferably, the thickness of the bridge section 8 is equal to the thickness of the central section 32 of the main body 3 and / or the insertion area 30. For example, the thickness of the first conductive layer 10 is between 0.1 mm and 6 mm, preferably between 0.2 mm and 5 mm, and most preferably between 0.3 mm and 4 mm. In general, the first conductive layer 10 and / or the second conductive layer 20 may be plated or unplated. Preferably, the conductive layer made of aluminum or copper is plated with a tin-plated layer or a nickel-plated layer.

[0058] Reference numerals

[0059] 1 Busbar

[0060] 2 Pin

[0061] 3 Subject

[0062] 4 first recess

[0063] 5. Capacitor

[0064] 6 second recess

[0065] 8 Bridge section

[0066] 10 First Conductive Layer

[0067] 15 Insulation layer

[0068] 17 terminals

[0069] 20 Second Conductive Layer

[0070] 30 Insertion area

[0071] 31 Receiving recess

[0072] 32 Central section

[0073] 40 Third Conductive Layer

[0074] 41 Part 1

[0075] 42 Part 2

[0076] 45 external shape

[0077] S Stacking direction

[0078] M Main extension plane

[0079] SP Around Path

[0080] CD Circumferential direction

[0081] A1 First cross section

[0082] A2 Second cross section

[0083] D Thickness

[0084] L1 First Length

[0085] L2 Second length

[0086] W1 first width

Claims

1. A busbar (1), in particular a laminated busbar (1), which is configured for mounting electronic components, in particular passive electronic components, on the busbar (1), wherein: The busbar (1) comprises a first conductive layer (10) having a body (3) and at least one insertion region (30), the at least one insertion region (30) being configured for inserting contact elements of the electronic component, in particular pins (2) of the electronic component, into the busbar (1), wherein the insertion region (30) comprises: a central section (32) having a receiving recess (31) for receiving the contact element, - a first recess (4) and a second recess (6), said first recess (4) and said second recess (6) at least partially surrounding said central section (32), and a bridging section (8) for connecting the central section (32) with the body (3) of the first conducting layer, Wherein, the bridging section (8) extending between the main body (3) and the central section (32) has a first length (L1) along an extension direction (E) of the bridging section (8) and a first width (W1) measured along a direction perpendicular to the extension direction (E), wherein the ratio of the first width (W1) to the first length (L1) is less than 0.5, preferably less than 0.4, and most preferably less than 0.

3.

2. The busbar (1) according to claim 1, wherein: Along a radial direction (R) starting from the middle of the central section (32), the bridging section (8) is at least partially arranged between the first recess (4) and the second recess (6).

3. The busbar (1) according to claim 1, wherein: The first recess (4) and / or the second recess (L2) have a maximum second length (L2) measured along a radial direction (R) starting from the middle of the central section (32), wherein the first length (L1) is longer than the maximum second length (L2), preferably at least 1.3 times, more preferably at least 1.6 times, and most preferably 2 times longer than the maximum second length (L2).

4. The busbar (1) according to one of the preceding claims, wherein: The first width (W1) of the bridge section (5) has a value between 0.4 mm and 2.5 mm, more preferably between 0.55 mm and 1.5 mm, and most preferably between 0.65 mm and 1.1 mm.

5. The busbar (1) according to one of the preceding claims, wherein: The extension direction (E) is inclined to a radial direction (R) starting from the middle of the central section (32).

6. Busbar (1) according to the preceding claim, wherein: The busbar (1) comprises a second conductive layer (20).

7. The busbar (1) according to one of the preceding claims, wherein: The first recess (4) and / or the second recess (6) comprises a segment having a varying second length (L2), wherein, along a circumferential direction (CD) around the central segment (32), the second length (L2) of the first recess (4) and / or the second recess (6) measured along the radial direction (R) varies within the segment having the varying second length (L2).

8. Busbar (1) according to one of the preceding claims, wherein The maximum second length (L2) of the first recess (4) and / or the second recess (6) measured along the radial direction (R) has a value between 1 mm and 10 mm, preferably between 2 mm and 8 mm, and most preferably between 2.5 mm and 6 mm.

9. The busbar (1) according to the preceding claim, wherein: The first width (W1) of the bridging section (8) is constant along an extension direction (E) of the bridging section (8).

10. The busbar (1) according to one of the preceding claims, wherein The first recess (4) and / or the second recess (6) is / are substantially crescent-shaped.

11. Busbar (1) according to one of the preceding claims, wherein The central area (32) has a circular or oval shape.

12. Busbar (1) according to one of the preceding claims, wherein The thickness of the bridge section (8), the body (3) and / or the central section (32) is between 0.4 mm and 2.5 mm, preferably between 0.55 mm and 1.5 mm, and most preferably between 0.65 mm and 1.1 mm.

13. The busbar (1) according to one of the preceding claims, wherein The central region (32) is covered with nickel and / or tin.

14. A method for producing a busbar (1) according to one of the preceding claims, wherein: The first recess (4) and / or the second recess (6) are cut into the first conductive layer (10) of the busbar (1).

15. A method for connecting an electronic component to a bus bar (1), wherein: Contact elements of electronic components are inserted into the insertion region (30) of the busbar (1), wherein the contact elements are soldered and / or welded to the insertion region (30), preferably automatically by a robot.

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