Resistor assembly for a sensor device for determining an electric current

Abstract

The invention relates to a resistor assembly for a sensor device for determining an electric current, particularly in a vehicle. The resistor assembly comprises an electrical conductor (10) with a measuring section (12), a first connection section (14) with a first current connection (22), and a second connection section (16) with a second current connection (24). A first contact element surface (32) is bounded with respect to a main current direction (26) extending from the first current connection (22) to the second current connection (24) by a contact surface (28) and a first slot (34) arranged between the first current connection (22) and a first contact element (18), in particular extending at least partially transversely to the main current direction (26).On the measuring section (12), at least one second contact element surface (36) corresponding to the first contact element surface (32) is formed, on which at least one second contact element (20) corresponding to the first contact element (18) is provided. The second contact element surface (36) is bounded with respect to the main current direction (26) by the first contact surface (28) and a second slot (38) arranged between the second current connection (24) and the second contact element (20), in particular extending at least partially transversely to the main current direction (26).

Description

[0001] The invention relates to a resistor assembly for a sensor device for determining an electric current.

[0002] Information is a crucial component of modern vehicles. It is used, for example, to regulate control loops, share traffic information with the public, and improve vehicle safety. To obtain this information, the vehicle is equipped with numerous sensors that continuously collect data and transmit it to a control unit for analysis.

[0003] One of the sensors installed in modern vehicles is a battery sensor. This sensor measures the current flowing from the battery. The battery sensor typically consists of an electrical conductor through which the current flows and a current sensor to measure the current. Because the current can be very small, the battery sensor must be designed to detect even very small currents. This can be achieved, for example, by using highly precise sensor elements or by modifying the structure of the electrical conductor.

[0004] At points where two different materials are joined, electrothermal effects occur, which distort the measured voltage. To determine the current more accurately, the temperature is usually measured or approximated using an algorithm. Another possibility is to neglect all thermoelectric voltages and thus deliberately accept inaccurate measurements.

[0005] The invention is based on the objective of providing a resistance assembly which enables compensation of occurring thermoelectric voltages between a connection section and a measuring section by the geometric arrangement of contact element surfaces with corresponding contact elements.

[0006] To solve the problem, a resistor assembly is provided for a sensor device for determining an electric current, particularly in a vehicle. The resistor assembly comprises an electrical conductor with a measuring section, a first connection section with a first current connection, and a second connection section with a second current connection. The first connection section is arranged on a first side of the measuring section. A first contact surface is formed between the first connection section and the measuring section. The second connection section is arranged on a second side of the measuring section opposite the first side. A second contact surface is formed between the second connection section and the measuring section. At least one first contact element surface is formed on the first connection section, on which at least one first contact element is provided.The first contact element surface is bounded with respect to the main current direction running from the first current terminal to the second current terminal by the first contact surface and a first slot arranged between the first current terminal and the first contact element, in particular extending at least partially transversely to the main current direction. At least one second contact element surface corresponding to the first contact element surface is formed on the measuring section, on which at least one second contact element corresponding to the first contact element is provided. The second contact element surface is bounded with respect to the main current direction by the first contact surface and a second slot arranged between the second current terminal and the second contact element, in particular extending at least partially transversely to the main current direction.

[0007] A resistor assembly is defined as an assembly comprising an electrical conductor with a measuring section and two electrical contact elements arranged on the conductor. The resistor assembly conducts an electric current, and due to the physical properties of the measuring section, a defined voltage drop occurs across it. This voltage drop is measured by a sensor device.

[0008] A sensor device is understood to be any device designed to detect an electric current by means of sensor elements included in the sensor device. The sensor device comprises at least one sensor element for detecting the voltage before and / or after the measuring resistor, and a printed circuit board on which the at least one sensor element is arranged. The at least one sensor element is preferably an ASIC.

[0009] An electrical conductor is any device capable of conducting an electric current. The electrical conductor is preferably cuboid in shape. The electrical conductor preferably has two connection sections and a measuring section. The two connection sections and the measuring section are made of two different materials, with the connection sections preferably being made of copper. Alternatively, the two connection sections and the measuring section are made of the same material.

[0010] A measuring section is defined as any section with a fixed geometry, where the geometry and material properties define the electrical resistance value of the measuring section. The measuring section is preferably made of a copper-nickel-manganese alloy that exhibits very low temperature-related deviations in electrical resistance.

[0011] A connection section is defined as any section that forms a portion of the electrical conductor and to which a cable can be connected. Each connection section preferably has a power connection. The connection section is preferably made of copper.

[0012] An electrical connection is any connection through which an electrical conductor for the supply and / or return of electrical current can be attached to the electrical conductor of the resistor assembly. The electrical connection is preferably a bore. The cable can preferably be attached to this electrical connection directly, for example by welding, or indirectly, for example by means of a screw.

[0013] A contact surface is defined as the area where an end face of the connection section and an end face of the measuring section meet. The contact surface is preferably perpendicular to a main current direction or longitudinal axis of the electrical conductor. The contact element area is preferably formed between the smallest surfaces of the connection section and the measuring section.

[0014] A contact element is understood to be an element that can be arranged on the electrical conductor and is designed for fastening and as an electrical contact for the sensor device. The contact elements are formed on the electrical conductor and are inserted into recesses. The contact element is preferably a press-fit pin or a stud.

[0015] A contact element surface is understood to be the area on which a contact element is arranged. The contact element surface is preferably bounded by a slot and the contact area. The contact element surface is preferably rectangular and / or round and / or oval. The contact element surface is connected to the connection section or the measuring section by means of a connecting element.

[0016] The main current direction is understood to be the direction in which the current flows from the first terminal to the second terminal. The main current direction is preferably a straight line or axis spanning between the first and second terminals. Alternatively, the main current direction runs parallel to the longitudinal axis of the electrical conductor.

[0017] The advantage of the proposed invention lies in the fact that the measurement of the electric current flowing through the electrical conductor of the resistor assembly can be determined precisely and cost-effectively, since the thermoelectric voltage is compensated due to the arrangement of the contact element surfaces and the contact elements arranged thereon.

[0018] Preferably, the contact element surfaces can be adjacent to each other at the first and / or second contact surface. The contact element surfaces preferably abut each other with one edge. The contact element surfaces are preferably rectangular, particularly square. This has the advantage that the contact element surfaces can be arranged in a space-saving manner.

[0019] Furthermore, the adjacent contact element surfaces can have at least one connecting element, wherein one area of ​​the at least one connecting element is located in a connection section and another area is located in the measuring section. The connecting element is preferably designed as a bridge. The connecting element is particularly symmetrical. This has the advantage that the current is routed around the contact element surfaces.

[0020] Furthermore, the first slot and / or the second slot can have at least one second section, wherein the second section runs essentially parallel to the main current direction. The second section is preferably arranged such that the contact element area is square. Alternatively, the second section is arranged such that the contact element area is rectangular. This has the advantage that the current is guided around the contact element area.

[0021] Furthermore, the first contact element surface can be surrounded by the first slot, and the second contact element surface by the second slot, in an L-shape. This has the advantage that the contact element surfaces have a clear boundary within the electrical conductor.

[0022] The first slot and / or the second slot preferably has at least one third section, wherein the third section runs substantially parallel to the main current direction. The third section is preferably formed when the contact element surface is arranged at a distance from the edge of the connection section or the measuring section. The third section of the first slot and the third section of the second slot can, in particular, be continuous and merge into one another. This has the advantage that the current can be routed around the contact element surfaces when the contact element surfaces are arranged at a distance from the edge of the electrical conductor.

[0023] Furthermore, the first contact element surface can be surrounded by the first slot, and the second contact element surface by the second slot, in a U-shape. This has the advantage that the contact element surfaces have a clear boundary within the electrical conductor.

[0024] Furthermore, the first and second contact element surfaces can be located at the edge, and the first and second slots can extend away from an edge of the electrical conductor. This has the advantage that the contact surfaces for compensating the thermoelectric voltage can be arranged on the resistor assembly with less effort.

[0025] Preferably, the first and second contact element surfaces can be symmetrical with respect to a first axis of symmetry, which lies in the plane of the first and / or second contact surface. The first axis of symmetry preferably runs transversely to the electrical conductor. This has the advantage that the electric current field between the contact elements can be kept very low.

[0026] Furthermore, an additional first contact element surface can be arranged in the connection section and an additional second contact element surface in the measuring section, wherein the additional first contact element surface is arranged symmetrically to the first contact element surface and the additional second contact element surface is arranged symmetrically to the second contact element surface, with the second axis of symmetry running parallel to the main current direction. Preferably, the additional first contact element surface is symmetrical to the first contact element surface and the additional second contact element surface is symmetrical to the second contact element surface. The second axis of symmetry is preferably identical to the longitudinal axis of the electrical conductor of the resistor assembly. This has the advantage of creating an additional measuring point, thereby improving the accuracy of the measurement.

[0027] On the second connection section, at least one third contact element surface is preferably formed, on which at least one third contact element is provided. The third contact element is preferably identical to the first and / or second contact element. The third contact element surface is preferably identical to the first contact element surface. This has the advantage that an additional measuring point is formed, thereby improving the accuracy of the measurement.

[0028] Furthermore, the third contact element surface can be bounded with respect to a main current direction running from the first current terminal to the second current terminal by the second contact surface and a third slot arranged between the second current terminal and the third contact element, in particular a slot extending at least partially transversely to the main current direction. The third slot is preferably designed like the first slot and / or the second slot. This has the advantage that the current can be routed around the contact element surfaces.

[0029] Furthermore, at least one fourth contact element surface corresponding to the third contact element surface can be formed on the measuring section, on which at least one fourth contact element corresponding to the third contact element is provided. The fourth contact element is preferably designed like the first contact element and / or the second contact element and / or the third contact element. Alternatively, the fourth contact element is designed like the third contact element. The fourth contact element surface is preferably not identical to the second contact element surface. This has the advantage of creating an additional measuring point, thereby improving the accuracy of the measurement.

[0030] Preferably, the fourth contact element surface can be bounded with respect to the main current direction by the second contact surface and a fourth slot arranged between the first current connection and the fourth contact element, in particular extending at least partially transversely to the main current direction. The fourth slot is preferably configured like the first slot and / or the second slot and / or the third slot. This has the advantage that the flow field between the third and fourth contact elements can be kept very small.

[0031] Furthermore, a method for manufacturing a resistor assembly for a sensor device for determining an electric current, particularly in a vehicle, is proposed. The resistor assembly comprises an electrical conductor with a measuring section, a first connection section, a second connection section, and at least two contact elements. The method has the following steps: • Providing the electrical conductor • Inserting the first slot into a connection section, and • Inserting the second slot into the measuring area

[0032] Further advantages and features will become apparent from the following description in conjunction with the attached drawings. These show: Fig. 1 an electrical conductor of the resistor assembly Fig. 2 an electrical conductor of the resistor assembly with different arrangement variants of the contact elements Fig. 3 an electrical conductor of the resistor assembly with internally arranged contact elements and contact element surfaces

[0033] In Fig. Figure 1 shows an electrical conductor 10 of a resistor assembly. The resistor assembly preferably comprises the electrical conductor 10 with a measuring section 12, a first connection section 14, a second connection section 16, at least two contact elements 18, 20 arranged on the electrical conductor, a first current connection 22, a second current connection 24, and a sensor device (not shown). Due to its geometry and material properties, the measuring section 12 has a defined electrical resistance.

[0034] The measuring section 12 is arranged between the first connection section 14 and the second connection section 16. The first connection section 14 includes the first power connection 22. The second connection section 14 includes the second power connection 24. A cable can be mounted on each of the first power connection 22 and the second power connection 24, for example. The two power connections 22 and 24 allow current to flow from a vehicle battery (not shown) via the electrical conductor 10 into the vehicle's electrical system. This current has a main current direction 26, which runs parallel to the longitudinal axis, i.e., in the x-direction, of the electrical conductor 10. In this embodiment, the two connection elements 22 and 24 are formed as bores.

[0035] The measuring section 12 preferably consists of a copper-nickel-manganese alloy. The first and second connection sections 14, 16 preferably consist of copper. The first connection section 14 is attached to a first contact surface 28 of the measuring section 12 on a first side, for example by welding. The second connection section 16 is attached to a second contact surface 30 of the measuring section 12 on a second side opposite the first side, for example by welding.

[0036] In the first connection section 14, a first contact element surface 32 is arranged, on which the first contact element 18 is mounted. The first contact element surface 32 borders the first contact surface 28 on one side. The first contact element surface 32 is geometrically defined by the first contact surface 28 and a first slot 34, the first slot 34 being located between the first contact element 18 and the first current terminal 22. The first slot 34 extends with a first section away from the edge of the electrical conductor 10 and substantially perpendicular to the main current direction 26 into the first connection section 14. The first slot 34 also has a second section, which is arranged perpendicular to the first section and parallel to the main current direction 26 on the first section.The second section of the first slot 34 extends from the first section of the first slot 34 towards the first contact surface 28.

[0037] In the measuring section 12, a second contact element surface 36 is arranged, on which the second contact element 20 is mounted. The second contact element surface 36 borders the first contact surface 28 on one side. The second contact element surface 36 is geometrically defined by the first contact surface 28 and a second slot 38, the second slot 38 being located between the second contact element 20 and the second current terminal 24. The second slot 38 extends with a first section away from the edge of the electrical conductor 10 and substantially perpendicular to the main current direction 26 into the measuring section 12. The second slot 38 also has a second section, which is arranged perpendicular to the first section and parallel to the main current direction 26. The second section of the second slot 38 extends from the first section of the second slot 38 in the direction of the first contact surface 28.

[0038] The first contact element surface 32 and the second contact element surface 36 have a common connecting element. This element lies with one area, in particular with one half, in the first connection section 14 and with another area, in particular the second half, in the measuring section 12.

[0039] Electrical connections (not shown) are attached to the first contact element 18 and the second contact element 20, in particular by means of a plug connection or by welding. A sensor device (not shown) can use these electrical connections to determine the respective thermoelectric voltage applied to the first and second contact elements 18 and 20, which occurs between the first connection section 14 and the measuring section 12.

[0040] In the plane of the first contact surface 28 and parallel to the transverse direction of the electrical conductor 10, i.e., parallel to the y-axis, a first axis of symmetry 42 is formed. The first contact element surface 32 and the first slot 34 are symmetrical to the second contact element surface 36 and the second slot 38 along this first axis of symmetry 42.

[0041] In Fig. Figure 2 shows further embodiments, the above also applying here. In addition, a second axis of symmetry 56, which corresponds to the longitudinal axis of the electrical conductor 10, is included in the further embodiments.

[0042] In the second embodiment, a third contact element surface 44 is arranged in the second connection area 16, on which the third contact element 46 is mounted. The third contact element surface 44 borders the second contact surface 30 on one side. The third contact element surface 44 is geometrically defined by the second contact surface 30 and a third slot 48, the third slot 48 being located between the third contact element 46 and the second current terminal 24. The third slot 48 extends with a first section from the edge of the electrical conductor 10 and substantially perpendicular to the main current direction 26 into the second connection area 16. The third slot 48 also has a second section, which is arranged perpendicular to the first section and parallel to the main current direction 26 on the first section.The second section of the third slot 48 extends from the first section of the third slot 48 towards the second contact surface 28.

[0043] In the measuring section 12, a fourth contact element surface 50 is arranged, on which the fourth contact element 52 is mounted. The fourth contact element surface 50 borders the second contact surface 30 on one side. The fourth contact element surface 50 is geometrically defined by the second contact surface 30 and a fourth slot 54, the fourth slot 54 being located between the fourth contact element 52 and the first current terminal 22. The fourth slot 54 extends with a first section from the edge of the electrical conductor 10 and substantially perpendicular to the main current direction 26 into the measuring section 12. The fourth slot 54 also has a second section, which is arranged perpendicular to the first section and parallel to the main current direction 26. The second section of the fourth slot 54 extends from the first section of the fourth slot 54 in the direction of the second contact surface 30.This diverts the current 40 around the previously described arrangement.

[0044] The third contact element surface 44 and the fourth contact element surface 50, as already described for the first and second contact element surfaces 32, 36, have a common connecting element. This element lies with one area, in particular with one half, in the second connection section 16 and with another area, in particular the second half, in the measuring section 12.

[0045] Electrical leads (not shown) are attached to the first, second, third, and fourth contact elements. Through these electrical connections (not shown), the sensor device (not shown) can determine the thermoelectric voltage between the second connection section 16 and the measuring section 12 via the first and second contact elements 18, 20. Furthermore, the sensor device (not shown) can determine the thermoelectric voltage between the second connection section 16 and the measuring section 12 via the third and fourth contact elements 46, 52. This enables a more precise determination of the thermoelectric voltage and thus also a more accurate determination of the current flowing through the electrical conductor 10.

[0046] In a third embodiment, the arrangement of first contact element surface 44, first contact element 18, and first slot 34, as well as the arrangement of second contact element surface 36, second contact element 20, and second slot 38, are mirrored across the second axis of symmetry 56. This creates a further first contact element surface with a further first contact element and a further first slot in the first connection section 14. Furthermore, a further second contact element surface with a further second contact element and a further second slot are created in the measuring section 12.

[0047] In a fourth embodiment, the arrangement described in the second embodiment is mirrored about the second axis of symmetry 56. This results in the formation of a further first contact element surface with a further first contact element and a further first slot in the first connection section 14, a further second contact element surface with a further second contact element, a further second slot, a further fourth contact element surface with a further fourth contact element, and a further fourth slot in the measuring section 12. In the second connection section, a further third contact element surface with a further third contact element and a further third slot are formed.

[0048] In Fig. Figure 3 shows a further embodiment. Unless otherwise described, the above applies equally.

[0049] In the first connection section 14, a first contact element surface 32 is arranged, on which the first contact element 18 is mounted. The first contact element surface 32 borders the first contact surface 28 on one side. The first contact element surface 32 is geometrically defined by the first contact surface 28 and a first slot 34, the first slot 34 being arranged between the first contact element 18 and the first current terminal 22. The first slot 34 extends with a first section inside the electrical conductor 10 and substantially perpendicular to the main current direction 26.

[0050] The first slot 34 also has a second section, which is arranged perpendicular to the first section and parallel to the main current direction 26. The second section of the first slot 34 extends from the first section of the first slot 34 towards the first contact surface 28. Furthermore, the first slot 34 has a third section, which runs parallel to the second section of the first slot 34, with the third section of the first slot 34 extending to the first contact surface 28.

[0051] In the measuring section 12, a second contact element surface 36 is arranged, on which the second contact element 20 is mounted. The second contact element surface 36 borders the first contact surface 28 on one side. The second contact element surface 36 is geometrically defined by the first contact surface 28 and a second slot 38, the second slot 38 being located between the second contact element 20 and the second current terminal 24. The second slot 38 extends with a first section inside the electrical conductor 10 and substantially perpendicular to the main current direction 26. The second slot 38 also has a second section, which is arranged perpendicular to the first section and parallel to the main current direction 26. The second section of the second slot 38 extends from the first section of the second slot 38 in the direction of the first contact surface 28.Furthermore, the second slot 384 has a third section which runs parallel to the second section of the second slot 38, wherein the third section of the second slot 38 extends to the first contact surface 28 and merges into the third section of the first slot 34.

[0052] In Fig. Figure 4 shows a further embodiment, similar to the example described above. Unless otherwise stated, the above applies equally.

[0053] The first slot 34 has a third section which runs parallel to the second section of the first slot 34. The length of the third section, in the direction extending towards the first contact surface 28, is essentially identical to that of the second section of the first slot 34.

[0054] Furthermore, the second slot 38 has a third section which runs parallel to the second section of the second slot 38. The length of the third section of the second slot 38, in the direction extending towards the first contact surface 28, is essentially identical to that of the second section of the second slot 38.

[0055] The first contact element surface 32 and the second contact element surface 36 have two common connecting elements. The two connecting elements are located on opposite sides and perpendicular to the main current direction 26. The connecting elements are located with one area, in particular with one half, in the first connection section 14 and with another area, in particular the second half, in the measuring section 12. Reference sign 10 Electrical conductor 12 Measurement section 14 first connection section 16 second connection section 18 First contact element 20 Second contact element 22 First power connection 24 Second power connection 26 Main current direction 28 First contact surface 30 Second contact surface 32 First contact element surface 34 First slot 36 Second contact element surface 38 Second slot 40 Deflected current 42 First axis of symmetry 44 Third contact element surface 46 Third contact element 48 Third slot 50 Fourth contact element surface 52 Fourth contact element 54 Fourth slot 56 Second axis of symmetry

Claims

Resistor assembly for a sensor device for determining an electric current, in particular in a vehicle, wherein the resistor assembly comprises an electrical conductor (10) with a measuring section (12), a first connection section (14) with a first current connection (22) and a second connection section (16) with a second current connection (24), wherein the first connection section (14) is arranged on a first side of the measuring section (12), wherein a first contact surface (28) is formed between the first connection section (14) and the measuring section (12), and wherein the second connection section (16) is arranged on a second side of the measuring section (12) opposite the first side of the measuring section (12), wherein a second contact surface (30) is formed between the second connection section (16) and the measuring section (12), wherein at least one first contact element surface (32) is formed on the first connection section (14).on which at least one first contact element (18) is provided, wherein the first contact element surface (32) is limited with respect to a main current direction (26) extending from the first current terminal (22) to the second current terminal (24) by the first contact surface (28) and a first slot (34) arranged between the first current terminal (22) and the first contact element (18), in particular extending at least sectionally transversely to the main current direction (26), and wherein at least one second contact element surface (36) corresponding to the first contact element surface (32) is formed on the measuring section (12), on which at least one second contact element (20) corresponding to the first contact element (18) is provided, wherein the second contact element surface (36) is limited with respect to the main current direction (26) by the first contact surface (28) and a slot arranged between the second current terminal (24) and the second contact element (20).in particular, the second slot (38) is limited at least in sections by running transversely to the main flow direction (26). Resistance assembly according to claim 1, characterized in that the contact element surfaces (32, 36) are in contact with each other at the first contact surface (28) and / or second contact surface (30). Resistor assembly according to one of claims 1 or 2, characterized in that the adjacent contact element surfaces (32, 36) have at least one connecting element, wherein a region of the at least one connecting element is located in a connection section (14, 16) and a region is located in the measuring section (12). Resistor assembly according to one of the preceding claims, characterized in that the first slot (34) and / or the second slot (38) have at least a second section, wherein the second section runs substantially parallel to the main current direction (26). Resistor assembly according to claim 4, characterized in that the first contact element surface (32) is surrounded by the first slot (34) and the second contact element surface (36) by the second slot (38) in an L-shape. Resistor assembly according to one of claims 1 to 4, characterized in that the first slot (34) and / or the second slot (38) have at least a third section, wherein the third section runs substantially parallel to the main current direction (26). Resistor assembly according to claim 6, characterized in that the first contact element surface (32) is surrounded by the first slot (34) and the second contact element surface (36) by the second slot (38) in a U-shape. Resistor assembly according to one of the preceding claims, characterized in that the first and second contact element surfaces (32, 36) are formed at the edge and the first and second slots (34, 36) extend away from an edge of the electrical conductor. A resistor assembly according to one of the preceding claims, characterized in that the first and second contact element surfaces (32, 36) are symmetrical with respect to a first axis of symmetry (42) which runs in the plane of the first and / or second contact surface (28, 30). Resistor assembly according to one of the preceding claims, characterized in that a further first contact element surface is arranged in the first connection section (14) and a further second contact element surface is arranged in the measuring section (12), wherein the further first contact element surface is arranged symmetrically to the first contact element surface (32) and the further second contact element surface is arranged symmetrically to the second contact element surface (36), wherein the second axis of symmetry (56) runs parallel to the main current direction (26). Resistor assembly according to one of the preceding claims, characterized in that at least a third contact element surface (44) is formed on the second connection section (16), on which at least a third contact element (46) is provided. Resistor assembly according to claim 11, characterized in that the third contact element surface (44) is limited with respect to a main current direction (26) extending from the first current terminal (22) to the second current terminal (24) by the second contact surface (30) and a third slot (48) arranged between the second current terminal (24) and the third contact element (46), in particular extending at least partially transversely to the main current direction (26). Resistance assembly according to one of the preceding claims, characterized in that at least one fourth contact element surface (50) corresponding to the third contact element surface (44) is formed on the measuring section (12), on which at least one fourth contact element (52) corresponding to the third contact element (46) is provided. A resistor assembly according to one of the preceding claims, characterized in that the fourth contact element surface (50) is limited with respect to the main current direction (26) by the second contact surface (30) and a fourth slot (54) arranged between the first current connection (22) and the fourth contact element (52), in particular extending at least partially transversely to the main current direction (26). Method for manufacturing a resistor assembly for a sensor device for determining an electric current, in particular in a vehicle, wherein the resistor assembly comprises an electrical conductor (10) with a measuring section (12), a first connection section (14), a second connection section (16) and at least two contact elements, comprising the following steps: • Providing the electrical conductor (10) • Inserting the first slot (34) into the first connection section (14), and • Inserting the second slot (38) into the measuring section (12)

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