Electrical feedthrough and method for manufacturing electrical feedthrough

Abstract

This configuration allows for more precise definition of the relative position of the electrical feedthrough to the housing and facilitates the assembly of the electrical feedthrough. [Solution] An electrical feedthrough 1 is provided, comprising a base body 10 having at least one opening 12, through which an electrical conductor 30 is guided and held within the opening via a fixing material 20, the fixing material closing the opening, the base body having an elongated shape and having a reinforcing structure at least on the long edge, the reinforcing structure being formed as a raised edge region 16 offset perpendicularly to the base surface 11 of the base body.

Description

Technical Field

[0001] The present invention relates to an electrical feed-through including a substrate having at least one opening and an electrical conductor guided through the opening, the conductor being held in the opening by a fixing material, the fixing material sealing the opening, the substrate having an elongated shape and having a reinforcing structure at least at the edges of the long sides. Another aspect of the present invention relates to a method of manufacturing such an electrical feed-through.

[0002] Prior Art Housings for electrical or electronic components generally require a number of electrical feed-throughs in order to enable electrical connection from the outside to the inside of the housing where, for example, members of an electric compressor (E-compressor) are present. Such electrical feed-throughs must be sealed liquid-tightly or even gas-tightly in order to protect the components within the housing from the surroundings and / or to retain gas or liquid within the housing. In order to obtain such liquid-tight or gas-tight feed-throughs for electrical conductors disposed within the openings of the housing, metal-fixing material feed-throughs can be used. In this case, a fixing material, for example a glass material, is used to seal the opening and hold the conductor within the opening. The fixing material is also used for electrical insulation between the conductor and the housing.

[0003] In known feed-throughs, a substantially plate-shaped element forms the substrate through which the electrical conductor is guided. The substrate here can then be inserted into an opening of an electrical or electronic device, for example the housing of an E-compressor. In order to ensure a seal between the substrate and the housing, the sealing surface of the substrate must be flat. Correspondingly, the substrate must not be deflected when fixed to the housing, for example via screw fastening.

[0004] International Publication No. 2021070817 provides known an electrical feedthrough in which the outer conductor or substrate has frame-like or beam-like extension sections as reinforcing structures. The electrical feedthrough can enclose the entire outer conductor or can be positioned only on the longitudinal sides of a plate-like substrate.

[0005] To form frame-like or beam-like extension sections, a plate-like base is first deformed using a multi-stage drawing process, such as deep drawing. This drawing process is time-consuming and requires additional material for the base.

[0006] The object of the present invention is to provide an electrical feedthrough having a substrate with a reinforcing structure that can be easily manufactured while saving material.

[0007] Disclosure of the invention An electrical feedthrough is proposed. This electrical feedthrough comprises a substrate having at least one opening, through which an electrical conductor is guided and held within the opening via a fixing material that closes the opening, and the substrate has an elongated shape and has a reinforcing structure at least on the long edge. Furthermore, it is provided that the reinforcing structure is formed as a raised edge region offset perpendicularly to the base surface of the substrate.

[0008] Preferably, the raised edge region is offset perpendicularly to the base surface of the substrate, where the thickness S1 of the edge region corresponds to the thickness D of the substrate. For this reason, the raised edge region can be deformed by shear deformation (Schubumformen). As a result, the joint or joining region between the raised edge region and the rest of the substrate has a height smaller than the thickness of the substrate.

[0009] The base is preferably made of a metallic material, in which case the raised edge region is obtained from a flat blank by shear deformation. In this case, the base surface is particularly a plane that unfolds in the longitudinal and transverse directions, or a plane that is oriented perpendicular to the axis of the opening of the base and is tangent to the edge region. Therefore, the vertical offset causes the material of the base to be offset perpendicular to the base surface.

[0010] Vertical offset or shear deformation to obtain a raised edge region compresses the fiber flow of the substrate metal material at the joint and cleaves it above or below the joint. The metal portion, particularly the deformed metal portion, has a fiber-like structure referred to as fiber flow or forging lines. The fiber flow can be visualized, for example, in a cross-section through the metal member by a wet chemical etching process. The fiber flow, and in this case particularly its direction, is controlled by the deformation process. In the proposed vertical offset or shear deformation process, the direction of the fiber flow is maintained even after the material is offset, whereas in a deep drawing process, for example, the direction is altered.

[0011] Since metallic materials have maximum mechanical stability parallel to the fiber flow, the longitudinal sides of the substrate, which are correspondingly exposed to a very high risk of shearing or bending, are configured to be oriented parallel to the fiber flow. This improves the bending stiffness along the longest direction of the substrate without the use of additional materials.

[0012] The substrate has an elongated shape. In this case, the elongated shape means that the substrate has a longitudinal side having a predetermined length and a transverse side having a predetermined width, where the length is greater than the width. The substrate is preferably formed in a plate shape. In this case, the plate shape means that the substrate has a thickness smaller than its length and width.

[0013] The base preferably has a roughly rectangular basic shape with longer vertical sides and shorter horizontal sides. The roughly rectangular basic shape means, in addition to a purely rectangular shape, a shape that is elongated and includes rounded parts, for example, a rectangle with rounded corners or a shape with two parallel and straight long sides and a curved short side. The raised edge region is preferably located at least on the edge on the vertical side, in which case the edge region can be located along the entire length of the vertical side. However, the edge region may have interruptions and / or may be located only on a portion of the vertical side. Furthermore, the raised edge region may be located on the horizontal side, in which case the raised edge can be located along the entire length of the horizontal side, and may also have interruptions and / or may be located only on a portion of the horizontal side. Preferably, the raised edge region, for example, a reinforcing ring, is located entirely around the outer contour of the base.

[0014] The vertical offset of the material to obtain the raised edge region creates a complementary step on the underside of the base. This step can be used as a mechanical stopper or centering aid when the feedthrough is inserted into the housing opening at the base. This allows for more precise positioning of the electrical feedthrough relative to the housing and facilitates the assembly of the electrical feedthrough.

[0015] On the upper surface of the substrate, a raised edge region forms a wall. This wall can be used as a mechanical stopper or centering aid for additional insulating elements placed on the electrical feedthrough. For example, such additional insulating elements, manufactured from elastic materials or thermoplastic or thermosetting plastics, can be used to extend the insulation distance or creepage distance between one of several guided electrical conductors and the feedthrough substrate.

[0016] Preferably, a raised or recessed reinforcing region is formed around at least one opening, in which case the raised or recessed reinforcing region is offset perpendicularly to the base surface of the substrate, and the thickness S2 of the raised or recessed reinforcing region corresponds to the thickness D of the substrate. The reinforcing region can be obtained by shear deformation processing, similar to the edge region.

[0017] If the substrate has two or more openings, a separate raised or recessed reinforcing region may be provided for each opening. Alternatively, a single raised or recessed reinforcing region may be provided that surrounds all openings for guiding electrical conductors. In this case, any fixing openings, if present, may be located outside the raised or recessed reinforcing regions.

[0018] The edge regions and, optionally, reinforced regions are obtained simply by offsetting the substrate material perpendicularly to the base surface of the substrate; therefore, no additional material is required to form these regions. The amount of material corresponds precisely to the amount of material for a flat substrate having the same dimensions in terms of length and width for a rectangular base shape or diameter for a circular base shape. Nevertheless, the mechanical stability of the substrate is improved, and in particular, its resistance to bending is enhanced.

[0019] In particular, when manufacturing using shear deformation, the raised edge region and / or the raised or recessed reinforced region are offset from the base surface of the base by an amount less than the thickness D of the base. In this case, the base surface is the original surface of the plate-shaped base or base blank that exists before the deformation process is applied, and corresponds to the surface that is in contact with the raised edge region after shear deformation.

[0020] Preferably, the raised edge region and / or the raised or recessed reinforced region are vertically offset by a range of 20% to 80% with respect to the thickness D of the substrate.

[0021] Next, the base body can be obtained from a flat blank by shear deformation, where the blank has a thickness D and also has the length and width or diameter of the completed base body. In this case, the surface of the blank can be considered the base surface. In this case, the edge region and / or reinforcement region can be obtained by offsetting the blank perpendicular to the base surface.

[0022] The raised edge region and, where present, the reinforced region are obtained by the vertical offset of the blank material, so that the substrate has the same constant thickness D in all regions, namely the edge region, the reinforced region and the raw substrate region. No additional material is required to form the edge region and / or reinforced region.

[0023] The width W of the edge region may be freely selected by manufacturing by shear deformation processing, and is preferably in the range of 0.5 to 2 times the thickness D of the base body.

[0024] Preferably, the substrate is made of a metal, where the metal is preferably selected from the group including steel, particularly non-alloy steel, such as material number 1.0338 steel or stainless steel, NiFe, Kovar, titanium and copper.

[0025] Preferably, the substrate is provided with a surface coating, particularly a nickel layer. By using a coating, the resistance of the substrate material to corrosive environmental influences can be enhanced.

[0026] The surface coating is preferably a nickel layer, which can be deposited electrochemically or chemically onto the surface of the substrate metal material. In the case of electrochemical coating, the coating is preferably obtained by drum coating. The coating is preferably distributed over the entire surface of the substrate and preferably free from gaps or defects.

[0027] Preferably, the base body has a sealing area, which is smooth, i.e., has no scratches and cuts, and thus is well - suited for sealing the housing by means of a sealing means, for example an O - ring. Further, the sealing area of the base body is preferably formed flat, in which case the sealing area preferably has a flatness deviation of ≤ 0.1 mm, particularly a flatness deviation in the range of 0.005 mm to 0.02 mm per 10 mm length, in accordance with DIN EN ISO 1101 as of September 2017.

[0028] Preferably, chamfers and / or rounded portions are provided along the entire outer edge of the base body and thus along the entire edge of the outer contour. The edge of the outer contour or the outer edge particularly includes the edge forming the transition from the upper or lower surface of the base body to the vertical edge of the base body. The rounded portion of the edge of the outer contour preferably has a radius r in the range of 0.1 mm to 2 mm, particularly preferably in the range of 0.5 mm to 1.5 mm, and most preferably in the range of 0.75 mm to 1.0 mm. In the case of a chamfer, a stepped transition from the upper or lower surface to the vertical edge is formed, where the transition is formed to have at least two steps each less than 90°, i.e., for example 45° each or for example 30° and 60°. Here, the size of the chamfer is the distance between the two steps, and the size here is in the range of 0.1 mm to 2 mm, preferably in the range of 0.5 mm to 1.5 mm, and particularly preferably in the range of 0.75 mm to 1.0 mm.

[0029] By providing a rounded portion and / or a chamfer that includes the entire outer edge of the base body, sharp corners and edges are avoided. As a result, on the one hand, a uniform outer edge of the mechanically stable base body is provided. On the other hand, when handling many base bodies or many feed-throughs provided with base bodies as bulk goods, it is prevented that a sharp outer edge collides with the surface or edge of another base body or feed-through, and in that case, damage is caused to this surface or edge. This is particularly advantageous when the base body of the feed-through has a sealing area that is flat and smooth. Scratches or unwanted roughness caused by multiple feed-throughs or base bodies colliding with each other will damage the sealing effect when interacting with the sealing area and the sealing element, for example an O-ring.

[0030] The base body can include another opening that functions as a fixing opening. The feed-through can be fixed to a housing member through the fixing opening, for example by screws.

[0031] The opening through which at least the electrical conductor penetrates and is held by the fixing material preferably has a sharp edge at the transition from the inner wall of the opening to the surfaces of the upper and lower faces of the base body. The edge is considered sharp particularly when it does not have a rounded portion or a chamfer, or when it has a rounded portion or a chamfer with a radius or size of less than 0.1 mm, particularly preferably less than 0.2 mm, and most preferably less than 0.1 mm.

[0032] The sharp edge at the transition to the inner wall of the opening has the advantage that the fixing material and the inner wall abut each other as straight vertical walls. In the case of a rounded portion or a chamfer, since the wall curves away from the fixing material in the region of the closing portion above the fixing material, the connection between the wall and the fixing material may be weakened. When a mechanical load is applied, a part of the fixing material may peel off in this region, and the feed-through as a whole may be weakened or become leaky.

[0033] Furthermore, one or more notches can be placed along the outer edge or outer contour of the substrate. These notches allow for a unique orientation of the substrate, which would otherwise be symmetrically formed along one or more points or one or more planes if no notches were provided. In particular, this allows for the distinction between the upper and lower surfaces of the substrate. In the punching process, differences usually arise due to slight bends or curves between the upper and lower surfaces of the member, where, for example, the upper surface may be slightly convex and the lower surface slightly concave. In this case, one orientation can be made more advantageous than the other for assembly into the feedthrough housing.

[0034] An electrical conductor is made of a conductive material, such as a metal. Preferably, at least one electrical conductor is made of a conductive material selected from the group including steel, especially stainless steel, nickel-iron alloys, and copper. Furthermore, the conductor may have a core made of a highly conductive material such as copper, and an outer sleeve made of another material.

[0035] The fixing material is preferably a glass material, a glass-ceramic material, or a ceramic material. Alternatively, the fixing material may be plastic. The fixing material is an electrical insulator. The electrical conductor is held within the opening of the substrate via the fixing material and is electrically insulated from the substrate. Furthermore, the fixing material seals the opening to the inner wall of the opening and to the electrical conductor.

[0036] Preferably, the substrate, at least one conductor, and the fixing material form a metal-fixing material feedthrough in the form of a compression-sealed glass. Therefore, the first thermal expansion coefficient of the substrate is preferably selected to be greater than the second thermal expansion coefficient of the fixing material. To obtain a compression-sealed glass, the difference between the first and second thermal expansion coefficients in the temperature range of 300K to 600K is preferably at least 2 ppm / K, more preferably at least 5 ppm / K. The third thermal expansion coefficient of the conductor material of the electrical conductor is preferably selected to be approximately equal to or less than the second thermal expansion coefficient of the fixing material. The two thermal expansion coefficients are considered approximately equal if the difference is less than 2 ppm / K.

[0037] Instead of compression-sealed glass, the substrate material, fixing material, and conductor material can be selected such that their respective coefficients of thermal expansion are approximately equal, where a difference of less than 2 ppm / K is considered approximately equal. In this modified form, the substrate, at least one conductor, and fixing material form an adapted metal-fixing material feedthrough.

[0038] The formed metal-fixing material feedthrough is preferably airtight, in which case a pressure difference of 1 bar results in 1.10 -7 mbar l / s less than 1.10 -8 A feedthrough with a He leak rate of less than mbar l / s is considered airtight.

[0039] The electric feedthrough described herein is particularly suitable for compressors. In this case, the electric feedthrough is particularly suitable for application in electrically driven compressors, so-called E-compressors, which are used for cooling the cabins of electrically driven vehicles.

[0040] Accordingly, the electrical feedthrough is preferably formed as a connection terminal for an E-compressor.

[0041] Another aspect of the present invention relates to a method for manufacturing an electrical feedthrough as described herein. In this case, a blank for a substrate is prepared and a reinforced edge region is deformed by shear deformation. By shear deformation, the edge region is offset perpendicular to the base surface of the blank. In a subsequent method step, a fixing material—a pressed part and an electrical conductor may be inserted into an opening provided in the substrate, in which case the fixing material is formed via a subsequent temperature treatment, and this fixing material then seals the opening and fixes the conductor.

[0042] The present invention will be described in detail below with reference to the drawings, but without limitation. The same reference numerals represent the same or similar elements. The drawings show the following: [Brief explanation of the drawing]

[0043] [Figure 1] This is a cross-sectional view of a substrate for electrical feedthrough using conventional technology. [Figure 2] This is a schematic cross-sectional view of the first embodiment of the substrate, seen from the side. [Figure 3] This is a schematic cross-sectional view of the second embodiment of the substrate, seen from the side. [Figure 4] This is a perspective view of the substrate according to the second embodiment. [Figure 5] This is a lateral cross-sectional view of an example of electrical feedthrough. [Figure 6] This is a schematic cross-sectional view of the third embodiment of the substrate, seen from the side. [Figure 7a] This figure shows a finite element simulation of the deflection of a substrate using conventional technology. [Figure 7b] This figure shows a finite element simulation of the deflection of a substrate using conventional technology. [Figure 7c] This figure shows a finite element simulation of the deflection of a substrate using conventional technology. [Figure 8a] This figure shows a finite element simulation of the substrate deflection according to the second embodiment. [Figure 8b]This figure shows a finite element simulation of the substrate deflection according to the second embodiment. [Figure 8c] This figure shows a finite element simulation of the substrate deflection according to the second embodiment.

[0044] Figure 1 shows a schematic cross-sectional view of a substrate 10' for electrical feedthrough using conventional technology.

[0045] In the illustrated example, the base 10' has three openings 12 through which an electrical conductor can be guided. Additionally, the base 10' has two fixing openings 14 through which the base 10' can be coupled to the housing, for example, by screws.

[0046] The base body 10' is formed in a flat, substantially rectangular shape, and in this case, the base body 10' has a deformed edge 15' on its outer contour for mechanical reinforcement. This deformed edge 15' is obtained from a flat blank using multiple deformation steps. In this case, the blank may be pressed into a forming die by a punch, in which case the blank material flows within the forming die and forms the deformed edge 15'. Accordingly, the fiber flow or forging line changes its direction at the transition to the deformed edge 15'.

[0047] The deformed edge 15' always has a height H greater than the blank thickness and also greater than the thickness D of the base body 10' excluding the deformed edge 15'. However, correspondingly, a base body 10' with the deformed edge 15' requires more material than a base body 10' without the deformed edge 15', even if the base body 10' has the same dimensions in terms of length and width. Furthermore, the deformed edge 15' is relatively more labor-intensive to manufacture due to the required deformation steps. The width W that makes up the thickness of the deformed edge 15' is usually equivalent to or less than the blank thickness D by the deep drawing method. The constructibility is limited because deep drawing does not allow for the selection of a width W greater than the blank's original material thickness D.

[0048] Figure 2 shows a schematic cross-sectional view from the side of a first example of a substrate 10 for the electrical feedthrough 1 (see Figure 5).

[0049] The base 10 has a flat, substantially rectangular shape with a predetermined length L, a predetermined width B, and a predetermined thickness D. In the first example shown, the base 10 has three openings 12 through which one electrical conductor 30 can pass. Additionally, the base 10 has two fixing openings 14 through which the base 10 can be coupled to the housing, for example, by screws.

[0050] For mechanical reinforcement of the base body 10, the base body 10 is provided with a raised edge region 16, which is offset vertically by a predetermined distance V from the base surface 11 of the base body 10. In this case, since the material thickness of the base body 10 remains constant, the material thickness S1 in the edge region 16 corresponds to the thickness D of the base body excluding the edge region 16. The width W that makes up the thickness of the edge region 16 can be freely selected in the illustrated configuration, and therefore may be selected to be wider than the thickness D of the base body 10 in particular.

[0051] The vertical offset of the material to obtain the raised edge region 16 creates a complementary step 42 on the lower surface of the base 10. This step 42 can be used as a mechanical stopper or centering aid when the electrical feedthrough 1 is inserted into the opening of the housing together with the base 10.

[0052] A raised edge region forms a wall 44 on the upper surface of the base 10. This wall 44 can be used as a mechanical stopper or centering aid for an additional insulating element (not shown) that may be placed on the electrical feedthrough 1.

[0053] Figure 3 shows a second example of the base 10 in a schematic cross-sectional view from the side. The base 10 has a flat, roughly rectangular shape, as already described in relation to the first example in Figure 2, and has three openings 12 for guiding the electrical conductor 30 (see Figure 5) through. In addition, two fixing openings 14 are provided so that the base 10 can be screwed to the housing.

[0054] The base body 10 in the second example has three additional reinforcing regions 18 in addition to the raised edge region 16. Each of these reinforcing regions 18 is formed as a raised portion and each surrounds one opening 12. Alternatively, a single raised reinforcing region 18 surrounding all three openings 12 may be provided. In the illustrated configuration, the fixing openings 14 are located outside the reinforcing regions 18. These reinforcing regions 18 are offset by a predetermined distance V perpendicular to the base surface 11 of the base body 10. In this case, since the material thickness of the base body 10 remains unchanged, the material thickness S2 in the reinforcing region 18 corresponds to the thickness D of the base body 10 outside the reinforcing region 18. The vertical offset may correspond to a vertical offset of the distance V of the edge region 16, as shown in Figure 3. Alternatively, the reinforcing regions 18 may be offset vertically by a different distance.

[0055] Figure 4 shows a perspective view of the base body 10 from Figure 2. In this case, it can be seen that the raised edge region 16 completely surrounds the base body 10. Alternatively, the raised edge region 16 may be provided only on a part of the outer contour of the base body 10, for example, only on the long edge of an elongated base body 10.

[0056] Figure 4 further shows that a sealing region 40 is located on the lower surface of the base 10, surrounding the opening 12. This sealing region 40 is flat and smooth and is used to seal the housing with a sealing means, such as an O-ring, when assembling the feedthrough 1 (see Figure 5) into the housing.

[0057] Figure 5 shows a schematic cross-sectional view from the side of an example of an electrical feedthrough 1 equipped with a base body 10. In this example, the base body 10 is formed as already described in relation to Figure 3 and has a reinforced edge region 16 provided on the outer contour and a raised reinforced region 18 provided to surround the opening 12.

[0058] Each opening 12 is guided through by a single electrical conductor 30. These electrical conductors 30 are each held within the opening 12 by a fixing material 20, such as a glass material or a glass-ceramic material. The fixing material 20 is used as an electrical insulator, insulating the electrical conductors 30 from the base body 10. Furthermore, the fixing material 20 closes the opening 12, sealing the inner wall of the opening 12 and the electrical conductors 30 in this case. In the example shown in Figure 5, it can be seen that the forging lines 19 of the metal material of the base body 10 are oriented parallel to the longitudinal direction. This further increases the bending rigidity of the base body 10.

[0059] Figure 6 shows another example of the base 10 in a schematic cross-sectional view from the side. The base 10 in Figure 6 is formed similarly to the base already described in relation to Figure 2 and has a raised edge region 16. In addition to the example described in relation to Figure 2, the base 10 in Figure 6 has rounded edges r on all edges of the outer contour. Edges located closer to the center, for example, the edges at the opening 12, are not rounded and are therefore formed sharply.

[0060] The rounded portion r on the outer edge prevents scratches or cuts from occurring when one outer edge of one base 10 collides with another base 10 when handling a large number of bases 10 as bulk goods. This is particularly important for the sealing surface 40 (see Figure 4), which must remain smooth and flat in order to achieve optimal sealing performance.

[0061] Figures 7a-7c and 8a-8c show the results of finite element simulations illustrating the deflection of the base body 10 when a pressure of 25 bar is applied. In this case, Figures 7a-7c show the deflection of the base body 10' with a deformable edge portion 15' according to the conventional technology, while Figures 8a-8c show the deflection of the base body 10 according to the present invention, which has a raised edge region 15 and a raised reinforcement region 18. For easier comparison, the base body 10' with a deformable edge portion 15' according to the conventional technology is also provided with a raised reinforcement region.

[0062] In both cases, a roughly rectangular base 10,10' was selected with a width of 26 mm and a length of 71 mm. A material thickness of 3 mm was chosen.

[0063] Figures 7a and 8a show partial perspective views of the base bodies 10 and 10', respectively; Figures 7b and 8b show cross-sectional views from the side; and Figures 7c and 8c show partial plan views. In the cross-sectional views from the side in Figures 7b and 8b, the deflection is exaggerated by 300 times for better visibility. The deflection of the base bodies 10 and 10' is shown in grayscale.

[0064] In the conventional base body 10', a maximum deflection of 0.010374 mm has been confirmed. In the base body 10 according to the present invention, a maximum deflection of 0.011531 mm has been confirmed. Therefore, the base body 10 according to the present invention has almost the same bending rigidity as the conventional base body 10' with a deformed edge 15', using less material. Accordingly, the reinforcing structure in the form of the raised edge 15 enables mechanical stiffening of the base body 10 without requiring additional material. Furthermore, since the raised edge 15 is manufactured by vertical offsetting the material of the base body 10, time-consuming deformation processing steps, such as deep drawing, are eliminated.

[0065] Although the present invention has been described based on preferred embodiments, the present invention is not limited thereto and can be modified in various ways. [Explanation of Symbols]

[0066] 1. Electrical feedthrough 10 Base 11 Base 12 Aperture 14 Fixing opening 15' Deformed edge 16. Elevated marginal region 18. Raised reinforced area 19 Forging lines 20 Fixed material 30 Electrical Conductors 40 sealing area 42 Stepped section 44 Wall r rounded part D Substrate thickness H edge height W width of the edge S1 Edge region thickness S2 Reinforcement area thickness V Vertical offset

Claims

1. An electrical feedthrough (1) comprising a base (10) having at least one opening (12), an electrical conductor (30) being guided through the opening (12) and held within the opening (12) via a fixing material (20) which closes the opening (12), and the base (10) having an elongated shape and having a reinforcing structure at least on the long edge, in the electrical feedthrough (1), The reinforcing structure is formed as a raised edge region (16) that is offset perpendicularly to the base surface (11) of the substrate (10), and is an electrical feedthrough (1).

2. The raised edge region (16) is offset perpendicularly to the base surface (11) of the substrate (10), and the thickness (S1) of the edge region (16) corresponds to the thickness (D) of the substrate (10), as described in claim 1, the electrical feedthrough (1).

3. An electrical feedthrough (1) according to claim 1 or 2, wherein a raised or recessed reinforcing region (18) is formed around at least one opening (12), the raised or recessed reinforcing region (18) is offset perpendicularly to the base surface (11) of the substrate (10), and the thickness (S2) of the raised or recessed reinforcing region (18) corresponds to the thickness (D) of the substrate (10).

4. The electric feedthrough (1) according to any one of claims 1 to 3, wherein the raised edge region (16) and / or the raised or recessed reinforcing region (18) are offset from the base surface (11) of the base (10) by an amount less than the thickness (D) of the base (10).

5. The electric feedthrough (1) according to claim 4, wherein the raised edge region (16) and / or the raised or recessed reinforcing region (18) are vertically offset by 20% to 80% with respect to the thickness (D) of the base (10).

6. The electrical feedthrough (1) according to any one of claims 1 to 5, wherein the thickness (D) of the substrate (10) is constant over the entire region.

7. The electrical feedthrough (1) according to any one of claims 1 to 6, wherein the material of the substrate (10) is a metal selected from the group including steel, particularly non-alloy steel, for example, steel or special steel of material number 1.0338, NiFe, Kovar, titanium, and copper.

8. The electrical feedthrough (1) according to claim 7, wherein the forging lines of the metal material of the substrate (10) extend in the same direction across the entire region of the substrate (10), preferably parallel to the longest side of the substrate (10).

9. The electrical feedthrough (1) according to any one of claims 1 to 8, wherein at least one sealing region (40) of the substrate (10) has a flatness deviation of 0.1 mm or less in accordance with DIN EN ISO 1101 as of September 2017, particularly a flatness deviation in the range of 0.005 mm to 0.02 mm per 10 mm of length.

10. The electrical feedthrough (1) according to any one of claims 1 to 9, wherein the substrate (10) is provided with a surface coating, particularly a nickel layer.

11. The electrical feedthrough (1) according to any one of claims 1 to 10, wherein the substrate (10) is provided with chamfered and / or rounded portions (r) along all edges of the outer contour.

12. The electrical feedthrough (1) according to any one of claims 1 to 11, wherein the electrical feedthrough (1) is formed as a connection terminal for an E-compressor.

13. A method for manufacturing an electrical feedthrough (1) according to any one of claims 1 to 12, characterized in that the raised edge region (16) is deformed by shear deformation.

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