Temperature sensor for high-voltage conductors, and method for manufacturing such a temperature sensor.

Abstract

To manufacture a temperature sensor which satisfies requirements more favorably, more cost-effectively, or more easily.SOLUTION: The temperature sensor includes: a sensor housing for forming a chamber and having a base plate with a measurement window for attachment to a high voltage conductor and a lid for covering the chamber; a temperature sensor element 410 for measuring a temperature of the high-voltage conductor and for outputting an electrical temperature signal to the low-voltage network, which is arranged in the chamber; and a preformed elastomeric mat surrounded between the base plate and the lid in the chamber. The elastomeric mat has an insulating portion 310 extending around the measurement window for electrically insulating the temperature sensor from the high voltage conductor, and further includes a heat exchanging portion 330 surrounded by the insulating portion. The heat exchanging portion extends through the measurement window in a heat transfer direction W to the high voltage conductor for conducting thermal energy in the heat transfer direction between the high voltage conductor and the temperature sensor element adjacent to the heat exchanging portion.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a temperature sensor for high-voltage conductors and a method for manufacturing such a temperature sensor.

Background Art

[0002] High-voltage conductors are used in the utilization of high voltages. The utilization of high voltages means the use of voltages in the high-voltage range, typically voltages exceeding several hundred volts. These applications are spreading across various industries and technologies. For example, in the automotive field, high-voltage technology means the use of high-voltage batteries in electric vehicles and hybrid vehicles. High voltages are typically 400V - 600V or even above 600V. These high-voltage batteries are extremely important for the performance and range of the vehicle.

[0003] In the electronics industry, the utilization of high voltages plays a role in the power supply of electrical devices, particularly in high-voltage power supply units and transformers. The utilization of high voltages is also used in energy technologies for transporting electrical energy over long distances and distributing that electrical energy at different voltage levels.

[0004] Since the utilization of high voltages can potentially be dangerous, it is extremely important to handle high voltages safely. Therefore, the development of protective measures, insulating materials, and safety standards is very important to prevent accidents and ensure the efficiency and reliability of the utilization of high voltages.

[0005] Temperature sensors can be used to monitor the temperature of high-voltage conductors. Temperature sensors for high-voltage applications are specially developed sensors used in high-voltage environments. Usually, temperature sensors provide signals in the low-voltage range. For example, the temperature sensors in a vehicle are connected to the vehicle's electrical system, which has a supply voltage of 12V, for example, in a passenger car.

[0006] In the situations described above, temperature sensors for high-voltage conductors must be designed to account for the increased risk of discharge in high-voltage applications. In addition, these sensors must not only be electrically insulated but also heat-resistant to withstand the harsh conditions that can occur in high-voltage applications, which may require the selection of special materials. Furthermore, accurate temperature measurement is often critical for safe and reliable operation in high-voltage applications. Therefore, these sensors must possess high accuracy and stability to ensure accurate measurements over a wide temperature range. Because temperature sensors for high-voltage applications often have demanding operating conditions, they must be stable and reliable over long periods to ensure consistent performance over extended periods.

[0007] For all these reasons, temperature sensors for high-voltage conductors are generally extremely expensive. Therefore, a primary objective is also to reduce manufacturing costs.

[0008] Following market trends, high-voltage connectors in particular are becoming even smaller. As a result, thermal monitoring of high-voltage conductors in high-voltage connectors is becoming increasingly important.

[0009] In particular, double or reinforced insulation can be achieved by, for example, a hermetically insulated sensor, such as one implemented by potting or double-wall heat shrink tubing. Such double or reinforced insulation can provide protection against flashover. However, such insulation makes the sensor expensive and slow.

[0010] Alternatively, the sensor may include a ceramic or metal sensor plate to improve response time. However, this increases the cost. [Overview of the Initiative] [Problems that the invention aims to solve]

[0011] The present invention is based on the objective of creating a temperature sensor that better, more cost-effectively, or more easily satisfies at least one of the above-mentioned requirements. [Means for solving the problem]

[0012] The above-mentioned problems are resolved by the subject matter of the independent patent claims. Advantageous further embodiments are the subject matter of the dependent patent claims.

[0013] Generally, the above problems are solved by combining an insulating sensor housing with a pre-formed, integrated insulating elastomer mat housed in the insulating sensor housing and supporting a temperature sensor element. In particular, the pre-formed insulating elastomer mat has a heat exchange portion surrounded by an insulating portion.

[0014] Therefore, the pre-formed insulating elastomer mat fulfills two functions. The insulating portion contributes to increased insulation. In addition, the heat exchange portion allows for a shorter sensor response time. Combined with the two-component design of the sensor housing, cost-effective linear integration of the elastomer mat is possible.

[0015] In other words, the problem is solved by using two insulating plastic half-shells that form a housing for a molded elastomer mat that holds the sensor. The molded elastomer mat transfers thermal energy to the sensor element. The elastomer mat allows for tolerance compensation and reliable contact between the sensor element and the conductive metal part whose temperature is monitored. This ensures good thermal energy transfer throughout the product's operational life.

[0016] This configuration enables assembled sensors that do not require potting or heat-shrink tubing, and therefore, these sensors can be manufactured in large quantities at low cost, for example, in line production. Double or reinforced insulation is achieved by using a molded elastomer mat around the sensor. As a result, the cost of the sensor is lower compared to commercially available sensor solutions.

[0017] Ribs may be provided to extend the creepage and clearance distances. In particular, a creepage distance of 10.6 mm may be achieved in this manner. This makes it possible to manufacture temperature sensors in a particularly small size.

[0018] By using an elastomer mat with high thermal conductivity, heat is rapidly transferred from the high-voltage conductor contacts to the temperature sensor element. Because the heat transfer portion of the elastomer mat compensates for tolerances and geometric deviations, heat can be transferred from the current-carrying metal part to the temperature sensor element without any gaps.

[0019] The lower and upper housing shells, when assembled, form a protected product. The sensor may also be fitted with cable strain relief.

[0020] In particular, the molded elastomer may be silicone with high thermal conductivity, while the plastic half-shell has low thermal conductivity. This improves performance, especially enabling faster reaction times and more accurate temperature measurements.

[0021] According to the first example, a temperature sensor for a high-voltage conductor comprises a sensor housing for forming a chamber, the sensor housing having a base plate with a measuring window for mounting to a high-voltage conductor, and a lid for covering the chamber.

[0022] The sensor housing is preferably made of a resistant material. In particular, the sensor housing is preferably made of an electrically insulating material.

[0023] An enclosure comprising or consisting of a base plate and a lid connected to each other enables protection of electronic or mechanical components from external influences. While the base plate forms the base on which the components are arranged, the lid closes the housing and provides a wide range of protection. The housing does not need to completely surround the chamber and has openings such as measurement windows and connection openings for connecting the temperature sensor element to the supply network.

[0024] In addition, the connection between the base plate and the lid provides mechanical stability, which helps protect internal components such as the temperature sensor element and its contacts from mechanical stress.

[0025] Separation of the base plate and the lid enables easy assembly of the internal components. In particular, linear production is possible.

[0026] The base plate is mounted on the high-voltage conductor and thus contacts the high-voltage conductor. Thermal energy can be conducted into the chamber through the measurement window.

[0027] According to a first example, the temperature sensor comprises a temperature sensor element for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to the low-voltage network, and the temperature sensor element is arranged in the chamber.

[0028] The temperature sensor element measures the temperature and converts the temperature into an electrical signal. The temperature sensor element may comprise or consist of different types of sensors such as thermocouples, resistance temperature detectors (RTDs), or thermistors.

[0029] To output an electrical temperature signal, a temperature sensor element is typically connected to a low voltage network via two or more connection terminals. For example, an RTD is a temperature sensor whose electrical resistance changes with temperature. The change in resistance is measured and converted into a temperature signal. The electrical connection may vary depending on the sensor and the application.

[0030] In a first example, the temperature sensor also comprises a preformed elastomer mat. A preformed elastomer mat is a sheet or mat made of an elastomeric material that has already been formed in a specific shape and / or with specific properties. An elastomer is a polymeric material having rubber-like properties that can deform when stretched and then return to its original shape. Rubber is an example of an elastomeric material. The preformed elastomer mat particularly facilitates the installation of the temperature sensor as no injection molding is required during final assembly.

[0031] Furthermore, the elastomer mat is enclosed between a base plate and a lid in a chamber. In other words, an elastomer mat comprising one piece or consisting of one piece is held, for example clamped, within the boundaries of the sensor housing. Such a stacked construction contributes to the ease of assembly of the temperature sensor as only one part needs to be used in line production and positioned.

[0032] Furthermore, the elastomer mat has an insulating portion that extends around the measurement window to electrically insulate the temperature sensor from a high voltage conductor. The insulating portion extends around the measurement window of the base plate and thus increases the creepage distance and the clearance between the high voltage conductor and the temperature sensor. In other words, the distance between the edge of the measurement window opening towards the high voltage conductor and the temperature sensor element arranged in the chamber increases. As will be explained below, the temperature sensor element is preferably arranged within the elastomer mat, but can also be arranged on the surface of the elastomer mat facing the lid.

[0033] The terms creepage distance and clearance distance are used in electrical engineering, particularly in relation to insulation coordination and safety standards.

[0034] Creepage distance is the longest conductive path across the insulating surface between two conductive parts. In other words, creepage distance is the distance an arc can travel along a surface. Increasing creepage distance ensures that even if foreign matter such as dirt or water droplets enters the housing, there is still enough insulation on the insulating surface to protect the conductors from short circuits.

[0035] Clearance is the shortest air path between two conductive parts or electrical components separated by an insulating material or air. This term is particularly important when evaluating the insulating strength between different parts of an electrical circuit or electrical device. An increase in clearance means that the air resistance or insulating material between the parts provides sufficient protection to prevent breakdown or arcing.

[0036] The elastomer mat further comprises a heat exchange section surrounded by an insulating section, the heat exchange section extending through a measurement window to the high-voltage conductor in the heat transfer direction to conduct thermal energy in the heat transfer direction between the high-voltage conductor and the temperature sensor element adjacent to the heat exchange section.

[0037] The transport of thermal energy between the three elements—the high-voltage conductor, the heat exchanger, and the temperature sensor element—depends on several factors. In particular, the thermal conductivity of the element materials, the contact surfaces between the elements, the geometric arrangement of the elements, and the shape and type of heat transport must be considered.

[0038] By placing high-voltage conductors and temperature sensor elements in the heat exchange section, the contact surface area between these three elements is increased. This enables efficient transport of thermal energy and fast measurement feedback.

[0039] In addition, this arrangement allows for heat transport by conduction, which is generally more efficient than other types of heat transport such as thermal radiation. In this way, thermal energy can be transported efficiently, and rapid measurement feedback can be provided.

[0040] Here, the heat transfer direction is defined as the direction between the temperature sensor element and the contact surface between the heat exchange section and the high-voltage conductor. The contact surface is divided transversely by a contact window and is ideally centered relative to the contact window. The temperature sensor element is ideally positioned perpendicular to the contact surface. This makes it possible to shorten the distance between the high-voltage conductor and the temperature sensor element. As a result, thermal energy can be efficiently transported, enabling high-speed measurement feedback.

[0041] Further embodiments for improving the first example described above are illustrated in the following example.

[0042] According to the second example, the insulating portion of the temperature sensor according to Example 1 further comprises a heat insulation constriction, the thickness of which in the heat transfer direction is smaller than the thickness of which in the heat transfer direction is which of which the heat exchange portion is smaller in order to reduce heat conduction between the heat exchange portion and the insulating portion.

[0043] In other words, the integrated elastomer mat is pre-formed such that the cross-section in the heat transfer direction at the heat transfer section is larger than the cross-section in the heat transfer direction at the thermal insulation constriction of the insulating section. Advantageously, the thermal insulation constriction is located adjacent to the heat transfer section.

[0044] Heat conduction is a physical process in which thermal energy is transferred from a hotter region to a colder region. This energy exchange occurs at the molecular level through collisions and movement of particles in matter. Cross-sectional area plays a crucial role in heat conduction. The smaller the cross-sectional area, the fewer pathways are available for heat transport, resulting in a lower heat flow.

[0045] The thermal insulation constriction reduces the cross-section of the integrated elastomer mat in the thermal insulation constriction of the insulation section. As a result, more thermal energy can be retained in the heat exchange section, enabling rapid measurement feedback.

[0046] According to the third example, the insulating portion of the temperature sensor according to any of the above examples further comprises electrically insulating ribs, which protrude from the elastomer mat and at least partially surround the temperature sensor element so as to increase the creepage distance between the temperature sensor element and the measuring window.

[0047] Ribs are elongated, upright structural elements that protrude from the surface of the elastomer mat. In particular, insulating ribs protrude from the surface of the elastomer mat facing the lid.

[0048] The insulating ribs surround the temperature sensor element and are therefore positioned circumferentially in the heat transfer direction. As a result, the insulating ribs increase the creepage distance between the temperature sensor element and the edge of the measurement window.

[0049] The insulating ribs can completely or partially surround the temperature sensor element, for example, in a U-shape. Only partially surrounding insulating ribs can improve contact with the temperature sensor element.

[0050] According to the fourth example, the heat exchange portion of the temperature sensor according to any of the above examples has a contact surface, the contact surface protruding from the elastomer mat in the heat transfer direction, further protruding from the measurement window of the sensor housing, and / or the contact surface has a convex shape.

[0051] The contact between the heat exchanger and the high-voltage conductor is formed on the contact surface. The contact surface that protrudes beyond the edge of the measurement window of the base plate contributes to bubble-free contact between the high-voltage conductor and the heat exchanger. As described above, this enables more efficient transport of thermal energy and faster measurement feedback.

[0052] A convex shape refers to a geometric cross-section where, when two points are connected within the mold, the entire connection area remains within the mold. The convex contact surface prevents air bubbles from remaining between the high-voltage conductor and the heat exchange area when the temperature sensor is attached to the high-voltage conductor. This is because these air bubbles are pushed outward. As mentioned above, this enables more efficient transport of thermal energy and faster measurement feedback.

[0053] According to the fifth example, the heat exchange section of the temperature sensor according to any of the above examples has a sensor cavity in which a temperature sensor element is housed.

[0054] As described above, the temperature sensor element can be housed in the heat exchange section. Since the elastomer mat is pre-formed, the corresponding cavity, i.e., the empty space within the heat exchange section, can be pre-formed for the temperature sensor element. The sensor cavity contributes to increasing the contact surface area between the temperature sensor element and the heat exchange section. As described above, this enables more efficient transport of thermal energy and faster measurement feedback.

[0055] According to the sixth example, the heat exchange portion of the temperature sensor according to any of the above examples comprises a mounting surface, the mounting surface facing a lid, the mounting surface comprising an access portion for receiving a temperature sensor element into the heat exchange portion through an access portion, the access portion preferably comprising a beveled (also referred to herein as chamfered) edge, and in particular the heat exchange portion comprising a sensor cavity according to the fifth example.

[0056] The temperature sensor element can be partially housed in the heat exchange section, specifically in an access section that opens the surface of the mounting surface into the heat exchange section. The surface of the mounting surface, also called the mounting surface, is positioned opposite the lid of the sensor housing. This increases the creepage distance and clearance distance between the temperature sensor element and the high-voltage conductor. At the same time, the distance between the temperature sensor element and the high-voltage conductor for heat conduction decreases.

[0057] The beveled edges of the access section facilitate line-type integration.

[0058] Particularly advantageous is that the aforementioned advantages synergistically result in the access section connecting to the sensor cavity according to the fifth example.

[0059] According to a modified form of the sixth example, the insulating portion of the temperature sensor in each of the above examples has a mounting surface, the mounting surface faces the lid, the mounting surface has a cable channel, the cable channel opens toward the lid, and the connection terminals of the temperature sensor element are exposed in the cable channel for connection to the supply line of the low voltage network.

[0060] A cable duct is a device or structure used to organize, protect, and route electrical cables or lines. Cable ducts positioned on the mounting surface facilitate linear integration because their connection terminals can be easily connected to supply lines in low-voltage networks. Simultaneously, positioning them on the mounting surface increases creepage and clearance distances. Advantageously, the aforementioned insulating ribs also surround the cable duct.

[0061] According to the seventh example, the heat exchange portion of the temperature sensor according to any of the above examples has a mounting surface, the mounting surface faces the lid, the mounting surface has clamp ribs, the clamp ribs protrude toward the lid and contact the lid.

[0062] The elastomer mat in the heat exchange section is elastically deformed by the contact between the lid and the clamp ribs. In particular, the heat exchange section is pressed toward the measurement window. This achieves bubble-free contact between the high-voltage conductor and the heat exchange section. As described above, this enables more efficient transport of thermal energy and faster measurement feedback.

[0063] The fifth example described above, which relates to a temperature sensor element placed in a sensor cavity, is particularly advantageous because the heat exchanger is pressed in the direction of the temperature sensor element. Two clamping ribs in the same direction, such as parallel clamping ribs that press the temperature sensor element placed in the sensor cavity from two sides, are particularly advantageous.

[0064] The clamping ribs on the mounting surface are positioned away from the measurement window, thereby reducing thermal bonding between the lid and the elastomer mat. Particularly advantageous, to further reduce thermal bonding between the lid and the elastomer mat, the clamping ribs are provided only in the heat exchange area.

[0065] According to the eighth example, the heat exchange portion of the temperature sensor according to any of the above examples has a first material, and the insulating portion has a second material, wherein the thermal conductivity of the first material is higher than that of the second material, and in particular, a filler is mixed in the region of the heat exchange portion.

[0066] This makes it possible to increase the thermal conductivity of the heat exchange section compared to the thermal conductivity of the insulating section.

[0067] The thermal conductivity of elastomer mats can be increased by adding highly thermally conductive fillers, such as graphite, aluminum oxide, and / or boron nitride.

[0068] According to the ninth example, the thermal conductivity of the elastomer mat of the temperature sensor according to any of the above examples is higher than the thermal conductivity of the base plate, and preferably, the thermal conductivity of the elastomer mat is higher than the thermal conductivity of the lid.

[0069] This improves the insulation of the housing compared to using an elastomer mat.

[0070] According to the tenth example, the lid of the temperature sensor according to any of the above examples is provided with lid ribs, which extend from the lid into the chamber and at least partially surround the heat exchange section, and the beveled flank (also called chamfered flank) of the lid ribs is in contact with the heat exchange section so as to align the elastomer mat perpendicular to the heat transfer direction.

[0071] The lid ribs reduce thermal bonding between the lid and the elastomer mat because their contact surface is located away from the measurement window. To further reduce thermal bonding between the lid and the elastomer mat, it is particularly advantageous if the lid ribs contact the edge of the heat exchange area, for example, the edge of the mounting surface.

[0072] According to the 11th example, the lid of the temperature sensor according to any of the above examples is provided with lid ribs, the tips of which extend from the lid into the chamber and surround at least partially the heat exchange portion, and in particular, an air pocket is provided between the tips of the lid ribs and the insulating portion to prevent heat conduction between the air pocket and the insulating portion.

[0073] Therefore, the lid rib increases the spatial distance between the heat exchange section and one edge of the insulating section.

[0074] To prevent heat conduction between the lid and the elastomer mat, an air pocket may be provided between the insulating section and the lid rib. This also has the advantage of increasing installation tolerances.

[0075] According to a modified form of the 11th example, in addition to the second and third examples, the cover of the temperature sensor is provided with cover ribs that protrude into an insulated trench formed by an insulated constriction and at least partially surround the heat exchange section. This creates a labyrinth that increases creepage distance and spatial distance.

[0076] According to the 12th example, the lid of the temperature sensor according to any of the above examples has a connecting element, and the base plate of the temperature sensor according to any of the above examples has a mating connecting element for holding the lid and the base plate together in the connecting direction, the connecting direction being preferably the heat transfer direction.

[0077] This makes assembly easier. In particular, the connection direction can be selected so that it corresponds to the heat transfer direction, which enables cost-effective line production.

[0078] According to a modified form of the 12th example, the temperature sensor element in each of the above examples is located at the measuring end of the sensor housing, and the sensor housing has a strain relief for the supply line of the low-voltage network at the connector housing end opposite the measuring end.

[0079] This ensures a secure connection to the supply line on the sensor housing side. This is particularly advantageous when the temperature sensor is part of a high-voltage connector.

[0080] According to the 13th example, the base plate of the temperature sensor according to any of the above examples has a positioning member, and the insulating portion of the elastomer mat of the temperature sensor according to any of the above examples has a counter-positioning element for aligning the elastomer mat perpendicular to the heat transfer direction.

[0081] The opposing positioning element of the insulating portion reduces thermal bonding between the base plate and the elastomer mat because its contact surface is positioned away from the measurement window. Particularly advantageous, the positioning element contacts the edge of the insulating portion to reduce thermal bonding between the base plate and the elastomer mat.

[0082] According to a modified version of the 13th example, an air pocket is provided between the edge of the measurement window and the heat exchanger to prevent heat conduction between the heat exchanger and the edge of the measurement window.

[0083] For example, one of the flanks of the heat exchanger protruding through the measurement window is beveled. This creates an insulating air pocket, which also has the advantage of increasing installation tolerances.

[0084] The 14th example relates to a method for manufacturing a temperature sensor for high-voltage conductors, and the method is as follows: To provide a base plate having a measurement window for mounting to a high-voltage conductor, and a lid for covering the chamber, To provide a pre-formed elastomer mat having an insulating portion and a heat exchange portion, wherein the elastomer mat is a pre-formed elastomer mat that is enclosed between a base plate and a lid in a chamber, To measure the temperature of a high-voltage conductor and output an electrical temperature signal to a low-voltage network, a temperature sensor element is placed on an elastomer mat, This includes forming a chamber in the sensor housing by connecting the base plate to the cover, The heat exchange section is surrounded by an insulating section to electrically insulate the temperature sensor from the high-voltage conductor. The heat exchange section extends from the high-voltage conductor through a measurement window in the heat transfer direction to conduct thermal energy between the high-voltage conductor and the temperature sensor element adjacent to the heat exchange section.

[0085] To avoid repetition, the above example of a temperature sensor is referenced to the manufacturing process. In particular, the manufacturing method is used to manufacture a temperature sensor according to one of the above examples.

[0086] According to Example 15, in the manufacturing process according to Example 14, the pre-formed elastomer mat is supplied as an injection-molded part before the base plate is bonded to the lid.

[0087] This means that elastomer mats can be pre-formed with particularly high cost-effectiveness, i.e., without injection molding for the base plate or lid.

[0088] For a better understanding of the present invention, the invention will be described in more detail using examples of embodiments shown in the accompanying drawings. Identical parts are provided with the same reference numerals and the same component names. In addition, individual features or combinations of features of the various examples shown and described may also represent independent inventive solutions or solutions according to the present invention.

[0089] The present invention will be described below with reference to the drawings. [Brief explanation of the drawing]

[0090] [Figure 1] This is an exploded view of an example of a temperature sensor. [Figure 2] This is a second viewpoint diagram of Figure 1. [Figure 3] Figure 1 is a cross-sectional view of the temperature sensor in its assembled state. [Figure 4] This is a second cross-sectional view of the assembled temperature sensor shown in Figure 1. [Figure 5] Figures 1 to 4 show a high-voltage connector with a temperature sensor. [Modes for carrying out the invention]

[0091] As shown in Figures 1 and 2, a temperature sensor 10 for a high-voltage conductor (not shown) comprises a sensor housing for forming a chamber, the sensor housing comprising a base plate 100 having a measuring window 110 for mounting to the high-voltage conductor, and a lid 200 for covering the chamber.

[0092] The sensor housing extends longitudinally L from the measuring end where the measuring window 110 is located to the opposite end of the connector housing, which has an opening for electrical connection to the strain relief 120 for the supply lines of the low-voltage network.

[0093] The stacking direction of the housing shown in Figures 1 to 4 extends along an axis W perpendicular to the longitudinal direction L. As shown in Figures 1 to 4, heat is transported along the stacking direction W from a high-voltage conductor (not shown) through the measurement window 110 to the sensor unit. In particular, Figure 3 shows the direction of heat propagation by a thick line 333.

[0094] The sensor housing extends in the transverse direction Q, perpendicular to the heat transfer direction W and the longitudinal direction L.

[0095] As shown in Figure 1, the base plate 100 includes positioning elements 116 and 117, a strain relief 120, a side wall 130 surrounding the measuring end, and a mating connecting element 140. The base plate 100 having the above-described components may be manufactured integrally, for example, as an injection-molded part.

[0096] The positioning elements 116 and 117 are rib-shaped protrusions that may be integrally connected to the base plate 100. The positioning elements 116 and 117 may protrude from the base plate 100 in the direction of axis W and be connected to the side wall 130.

[0097] The strain relief 120 may have protrusions that project from the base plate in the direction of the axis W and may be integrally connected to the base plate. These protrusions form a cable duct for the supply line, and the cable duct extends in the longitudinal direction L and the transverse direction Q.

[0098] The side walls 130 surround the base plate 100 and project from the base plate 100 in the direction of axis W. In the example shown, the side walls 130 surround three of the four sides of the rectangular base plate 100. The side walls 130 and the base plate 100 form a cup-shaped container, with a strain relief 120 located on the fourth side.

[0099] Furthermore, the mating connecting element 140 is provided in the side wall 130 in the form of a through-opening.

[0100] As shown in Figure 2, the lid 200 has lid ribs 210, positioning elements 216 and 217, side walls 230, and connecting elements 240. The lid 200 having the above-described components may be manufactured integrally, for example, as an injection-molded part.

[0101] As shown in Figure 3, the lid rib 210 protrudes from the lid 200 into the chamber and at least partially surrounds the heat exchange portion 330 of the elastomer mat 300, which is described below. Furthermore, the lid rib 210 has a bevel flank 212 and a tip portion 214.

[0102] The bevel flank 212 is in contact with the heat exchange section 330. As shown in Figures 3 and 4, only a portion of the cover rib 210 extending in the longitudinal direction L has the bevel flank 212. This minimizes the contact surface, particularly by allowing alignment of the heat exchange section 330 in the transverse direction.

[0103] As shown in Figures 3 and 4, in the assembled state, an air pocket 614 is provided between the tip 214 of the lid rib 210 and the insulating portion 310 of the elastomer mat 300, which will be described below.

[0104] The positioning elements 216 and 217 are rib-shaped protrusions that may be integrally connected to the lid 200. The positioning elements 216 and 217 protrude from the lid 200 in the direction of axis W and partially form the side wall 230.

[0105] The side wall 230 encloses the lid 200 and protrudes from the lid 200 in the direction of axis W. The side wall 230 encloses three of the four sides of the rectangular lid 200. The side wall 230 and the lid 200 form a bowl-shaped container, with the fourth wall being partially open.

[0106] Furthermore, a connecting element 240 in the form of a hook is provided on the side wall 230.

[0107] As shown in Figure 4, the lid 200 and the base plate 100 are held together in the connection direction W by the connecting element 240 and the mating connecting element 140. Here, the connection direction corresponds to the heat transfer direction W. In particular, the side wall 230 of the lid 200 is inside the side wall 130 of the base plate, which increases the creepage distance and clearance distance between the high-voltage conductor and the temperature sensor element 410.

[0108] As shown in Figures 3 and 4, when assembled, an air pocket 614 is provided between the side wall 230 of the lid and the insulating part 310, which will be described below.

[0109] Furthermore, the temperature sensor 10 includes a sensor unit having a temperature sensor element 410 for measuring the temperature of a high-voltage conductor and for outputting an electrical temperature signal to the mating connectors 520 and 522 of the low-voltage network via two connection terminals 420 and 422. The mating connectors 520 and 522 are guided through a strain relief 120.

[0110] The temperature sensor element 410 is placed in the chamber, meaning the pre-formed elastomer mat 300 houses the temperature sensor element 410. For this purpose, the pre-formed elastomer mat 300 is enclosed between the base plate 100 and the lid 200 in the chamber. As a result, the temperature sensor element 410 is not molded into the elastomer mat but rather placed in it, enabling simple and cost-effective manufacturing.

[0111] The elastomer mat 300 shown in Figures 3 and 4 comprises an insulating portion 310 extending around the measurement window and a heat exchange portion 330. The theoretical boundary between the insulating portion 310 and the heat exchange portion 330 of the integrally formed elastomer mat 300 is indicated by a dashed line extending along the extension of the edge 112 of the measurement window.

[0112] Advantageously, the thermal conductivity of the elastomer mat 300 is higher than that of the base plate 100. Particularly preferable, the thermal conductivity of the elastomer mat 300 is also higher than that of the lid 200.

[0113] The insulating portion 310 of the elastomer mat 300 extends along the base plate 100, i.e., in the longitudinal direction L and the transverse direction Q, thereby electrically insulating the temperature sensor, temperature sensor element 410, and / or connection terminals 420, 422 from high-voltage conductors. The aforementioned air pockets 612 and 614 allow the insulating portion 310 and the base plate to overlap loosely without being pressed together. This reduces thermal coupling. In addition, installation tolerances can be increased.

[0114] In particular, as shown in Figure 3, the insulating section has a heat exchange section 330 perpendicular to the axis W, an insulating constricted section 312, an electrical insulating rib 314, and an opposing positioning element 316. Furthermore, the insulating section 310 has a cable duct 315 that opens toward the lid in the insertion direction W.

[0115] As shown in Figures 1 to 4, the thermal insulation constriction 312 surrounds the heat exchange section 330 and is adjacent to the heat exchange section 330. This reduces heat conduction in the elastomer mat 300 from the heat exchange section 330 to the insulating section 310 in the longitudinal direction L and transverse direction Q.

[0116] In particular, it can be seen from Figures 3 and 4 that the electrical insulating ribs 314 protrude from the elastomer mat 300 in the heat transfer direction, i.e., along the axis W, and at least partially surround the temperature sensor element 410. This increases the creepage distance between the temperature sensor element 410 and the edge 112 of the measurement window.

[0117] As shown in Figures 1 to 4, the opposing positioning elements 316 are positioned relative to the two opposite longitudinal sides of the electrical insulation rib 314. Together with the positioning elements 116 of the base plate 100, the opposing positioning elements 316 enable low-stress and simple positioning of the elastomer mat 300 in the longitudinal direction L. The opposing positioning elements 316 also increase the creepage distance and clearance distance between the temperature sensor element 410 and the edge 112 of the measurement window.

[0118] The cable duct 315 is positioned on the mounting surface with its mounting surface facing the lid 200, with its mounting surface on the opposite side of the lid 200. The cable duct 315 opens to the lid 200. Therefore, the connection terminals 420 and 422 of the temperature sensor element 410 are exposed to the mating connections 520 and 522 of the supply lines of the low-voltage network before the lid 200 is installed, allowing for easy and inexpensive connection during manufacturing.

[0119] In particular, as shown in Figure 3, the heat exchange section 330 has a contact surface 332, a sensor cavity 334 in which the temperature sensor element 410 is housed, and a mounting surface in the heat transfer direction W of a high-voltage conductor (not shown).

[0120] The heat exchange section 330 may contain a first material, and the insulating section 310 may contain a second material, wherein the thermal conductivity of the first material is advantageously higher than that of the second material. Therefore, heat can be conducted more efficiently to the temperature sensor element 410.

[0121] As shown in Figures 1 to 4, the mounting surface of the heat exchange section 330 faces the lid 200. An access section is provided on the mounting surface, and the access section has a beveled edge 342. Furthermore, clamp ribs 344 are provided on the mounting surface.

[0122] The contact surface 334 is in contact with a high-voltage conductor (not shown). For example, as shown in Figures 1, 2, and 4, the contact surface 334 is convex in at least one direction. This reduces the formation of air pockets between the heat exchange section 330 and the high-voltage conductor, and therefore increases the thermal coupling between the high-voltage conductor and the temperature sensor element 410.

[0123] Furthermore, a sensor cavity 334 is located in the heat exchange section 330. The sensor cavity is partially open to the mounting surface through an access section. In particular, the temperature sensor element 410 can be easily inserted into the pre-formed heat exchange section 330 via a beveled edge 342 and is at least partially enclosed by the heat exchange section 330. Placing it in the sensor cavity increases the contact surface and therefore increases the thermal coupling between the high-voltage conductor and the temperature sensor element 410.

[0124] The clamp rib 344 extends along the axis W from the mounting surface 340 toward the lid 200. In particular, the clamp rib 344 deforms the heat exchange section 330 when the lid 200 is mounted on the base plate 100. Specifically, the sensor cavity 334 is then pressed together, resulting in a larger contact surface between the heat exchange section 330 and the temperature sensor 410. Furthermore, the clamp rib 344 allows the heat exchange section to be pressed toward the high-voltage conductor through the measurement window 110, thus improving contact between the contact surface 332 of the heat exchange section 330 and the high-voltage conductor (not shown). This arrangement increases the contact force and therefore increases the thermal coupling between the high-voltage conductor and the temperature sensor element 410.

[0125] Other measures to increase thermal coupling between the high-voltage conductor and the temperature sensor element 410, and to improve insulation between the heat exchange section 330 and the bottom element, include an air pocket 616 between the edge 112 of the measurement window and the heat exchange section 330. This air pocket 616 also serves to increase installation tolerances.

[0126] The above measures are advantageous for heat conduction along the thick line 333 in the heat exchange region 330, which is essentially aligned with the direction of the axis W.

[0127] The sensor can be assembled cost-effectively by stacking components. Firstly, a base plate 100 having a measurement window 110 is provided for mounting to a high-voltage conductor.

[0128] In the next step, the pre-formed elastomer mat 300, having an insulating portion 310 and a heat exchange portion 330, is then incorporated into the base plate.

[0129] The temperature sensor element may already be placed on the elastomer mat, or it may be placed after the elastomer mat is attached to the base plate.

[0130] Next, the lid 200 is mounted to cover the chamber so that the elastomer mat 300 is enclosed between the base plate 100 and the lid 200 within the chamber.

[0131] Therefore, as described above, a heat exchange section is formed in which the insulating section surrounds the temperature sensor 410 so as to electrically insulate it from the high-voltage conductor, and the heat exchange section extends to the high-voltage conductor through the measurement window in the heat transfer direction in order to conduct thermal energy between the high-voltage conductor and the temperature sensor element adjacent to the heat exchange section.

[0132] Finally, Figure 5 shows the connection between the temperature sensor and the high-voltage header.

[0133] For example, a pre-formed elastomer mat may be provided as an injection-molded part before the base plate is connected to the lid.

[0134] Even if not shown in the diagram, the sensor housing may have a different shape and does not necessarily have to be a basic rectangular shape. The same applies to the measurement window. [Explanation of symbols]

[0135] 10 Temperature Sensor 100 base plate 110 Measurement window 112 Edge of the measuring window 116 Positioning elements 117 Positioning element 120 Strain Relief 130 Side wall 140 Mutual linking element 200 lids 210 Lid Ribs 212 Beveled Frank 214 Tip 216 Positioning elements 217 Positioning element 230 Side wall 240 connecting elements 300 Elastomer Mat 310 Insulation part 312 Thermally insulated constricted area 314 Electrical Insulation Rib 314 Cable duct 316 Opposing positioning element 330 Heat exchange section 332 Contact surface 333 Heetouch 334 Sensor Cavity 410 Temperature sensor element 420 connection terminals 422 Connection terminals 520 Other side connection 522 Reciprocal connection part 612 Air pocket 614 Air pocket 616 Air pocket W heat transfer direction and stacking direction L Longitudinal direction Q: Transverse direction

Claims

1. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The insulating portion (310) further comprises a heat-insulating constricted portion (312), and the thickness of the heat-insulating constricted portion (312) in the heat transfer direction (W) is smaller than the thickness of the heat exchange portion (330) in the heat transfer direction (W) in order to reduce heat conduction between the heat exchange portion (330) and the insulating portion (310), wherein the temperature sensor (10).

2. The temperature sensor (10) according to claim 1, wherein the insulating portion (310) further comprises an electrical insulating rib (314), the electrical insulating rib (314) protruding from the elastomer mat (300) and at least partially surrounding the temperature sensor element (410) so as to increase the creepage distance between the temperature sensor element (410) and the measurement window (110).

3. The temperature sensor (10) according to claim 1, wherein the heat exchange portion (330) comprises a contact surface (332), the contact surface (332) protruding from the elastomer mat (300) with respect to the heat transfer direction (W), and further protruding outside the measurement window (110) of the sensor housing, and the contact surface (332) has a convex shape.

4. The temperature sensor (10) according to claim 1, wherein the heat exchange section (330) comprises a sensor cavity (334) in which the temperature sensor element (410) is housed.

5. The heat exchange section (330) has a mounting surface, the mounting surface faces the lid (200), the mounting surface (340) has an access portion for receiving the temperature sensor element (410) into the heat exchange section (330) through the access portion, the access portion has a beveled edge portion (342), and the heat exchange section (330) has a sensor cavity (334) in which the temperature sensor element (410) is housed. and / or, The temperature sensor (10) according to claim 1, wherein the insulating portion (310) has a mounting surface, the mounting surface faces the lid (200), the mounting surface has a cable duct (315), the cable duct (315) opens toward the lid (200), and the connection terminals (420, 422) of the temperature sensor element (410) are exposed in the cable duct (315) for connection to the supply line of the low voltage network.

6. The temperature sensor (10) according to claim 1, wherein the heat exchange portion (330) has a mounting surface, the mounting surface faces the lid (200), and the mounting surface (340) has a clamp rib (344), the clamp rib (344) protrudes toward the lid (200) and contacts the lid (200).

7. The temperature sensor (10) according to claim 1, wherein the heat exchange portion (330) comprises a first material, the insulating portion (310) comprises a second material, the thermal conductivity of the first material is higher than that of the second material, and a filler is mixed in the region of the heat exchange portion (330).

8. The temperature sensor (10) according to claim 1, wherein the thermal conductivity of the elastomer mat (300) is higher than that of the base plate (100), and the thermal conductivity of the elastomer mat (300) is higher than that of the lid (200).

9. The temperature sensor (10) according to claim 1, wherein the lid (200) is provided with a lid rib (210), the lid rib (210) extending from the lid (200) into the chamber and at least partially surrounding the heat exchange section (330), and the bevel flank (212) of the lid rib (210) contacts the heat exchange section (330) such that the elastomer mat is positioned perpendicular to the heat transfer direction.

10. The temperature sensor (10) according to claim 1, wherein the lid is provided with a lid rib, the tip (214) of the lid rib (210) protrudes from the lid (200) into the chamber and at least partially surrounds the heat exchange portion (330), and an air pocket (612) is provided between the tip (214) of the lid rib (210) and the insulating portion (310) to prevent heat conduction between the tip (214) and the insulating portion (310).

11. The lid (200) comprises one or more connecting elements (240), and the base plate (100) comprises one or more mating connecting elements (140) for holding the lid (200) and the base plate (100) together in the connecting direction (W), the connecting direction (W) extends in the heat transfer direction (W), and / or, The temperature sensor (10) according to claim 1, wherein the temperature sensor element (410) is located at the measuring end of the sensor housing, and the sensor housing has a strain relief (120) for the supply line of the low voltage network at the connector housing end opposite to the measuring end.

12. The temperature sensor (10) according to claim 1, wherein the base plate (100) is provided with positioning elements (116, 117), and the insulating portion (310) of the elastomer mat (300) is provided with a counter positioning element (316) for aligning the elastomer mat (300) perpendicular to the heat transfer direction, and / or an air pocket (616) is provided between the edge (112) of the measuring window (110) and the heat exchange portion (330) to prevent heat conduction between the heat exchange portion (330) and the edge (112) of the measuring window (110).

13. A method for manufacturing a temperature sensor (10) for a high-voltage conductor, wherein the method is To provide a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, To provide a pre-formed elastomer mat (300) having an insulating portion (310) and a heat exchange portion (330), wherein the elastomer mat (300) is enclosed between the base plate (100) and the lid (200) in the chamber, In order to measure the temperature of the high-voltage conductor and output an electrical temperature signal to the low-voltage network, a temperature sensor element (410) is placed on the elastomer mat (300), This includes forming a chamber in the sensor housing by connecting the base plate (100) to the lid (200), The heat exchange section (330) is surrounded by the insulating section (310) such that the insulating section (310) electrically insulates the temperature sensor from the high-voltage conductor. The heat exchange section (330) extends through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange section (330), The insulating portion (310) further comprises an insulating constriction portion (312), wherein the thickness of the insulating constriction portion (312) in the heat transfer direction (W) is smaller than the thickness of the heat exchange portion (330) in the heat transfer direction (W) in order to reduce heat conduction between the heat exchange portion (330) and the insulating portion (310), in the method.

14. The method for manufacturing the temperature sensor (10) for a high-voltage conductor according to claim 13, wherein the pre-formed elastomer mat (300) is provided as an injection-molded part before the base plate (100) is connected to the lid (200).

15. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The insulating portion (310) further comprises an electrical insulating rib (314), the electrical insulating rib (314) protruding from the elastomer mat (300) and at least partially surrounding the temperature sensor element (410) to increase the creepage distance between the temperature sensor element (410) and the measurement window (110), the temperature sensor (10).

16. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The heat exchange section (330) comprises a contact surface (332), the contact surface (332) protruding from the elastomer mat (300) with respect to the heat transfer direction (W), and further protruding outside the measurement window (110) of the sensor housing, and the contact surface (332) has a convex shape, the temperature sensor (10).

17. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The heat exchange section (330) has a mounting surface, the mounting surface faces the lid (200), the mounting surface (340) has an access portion for receiving the temperature sensor element (410) into the heat exchange section (330) through the access portion, the access portion has a beveled edge portion (342), and the heat exchange section (330) has a sensor cavity (334) in which the temperature sensor element (410) is housed. and / or, The insulating portion (310) has a mounting surface, the mounting surface faces the lid (200), the mounting surface has a cable duct (315), the cable duct (315) opens toward the lid (200), and the connection terminals (420, 422) of the temperature sensor element (410) are exposed in the cable duct (315) for connection to the supply line of the low voltage network, the temperature sensor (10).

18. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The heat exchange section (330) has a mounting surface which faces the lid (200), and the mounting surface (340) has a clamp rib (344) which protrudes toward the lid (200) and contacts the lid (200), and is a temperature sensor (10).

19. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, A temperature sensor (10) wherein the heat exchange portion (330) comprises a first material, the insulating portion (310) comprises a second material, the thermal conductivity of the first material is higher than that of the second material, and a filler is mixed in the region of the heat exchange portion (330).

20. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The lid (200) is provided with a lid rib (210) which extends from the lid (200) into the chamber and at least partially surrounds the heat exchange section (330), and the bevel flank (212) of the lid rib (210) contacts the heat exchange section (330) so as to position the elastomer mat perpendicular to the heat transfer direction, and is a temperature sensor (10).

21. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, The lid is provided with lid ribs, the tip (214) of the lid ribs (210) protruding from the lid (200) into the chamber and at least partially surrounding the heat exchange portion (330), and an air pocket (612) is provided between the tip (214) of the lid ribs (210) and the insulating portion (310) to prevent heat conduction between the tip (214) and the insulating portion (310), the temperature sensor (10).

22. A temperature sensor (10) for a high-voltage conductor, wherein the temperature sensor (10) is A sensor housing for forming a chamber, the sensor housing having a base plate (100) having a measuring window (110) for attachment to the high-voltage conductor, and a lid (200) for covering the chamber, A temperature sensor element (410) for measuring the temperature of the high-voltage conductor and for outputting an electrical temperature signal to a low-voltage network, wherein the temperature sensor element (410) is arranged in the chamber, The chamber comprises a pre-formed elastomer mat (300) enclosed between the base plate (100) and the lid (200), The elastomer mat (300) has an insulating portion (310) that extends around the measuring window (110) to electrically insulate the temperature sensor from the high-voltage conductor. The elastomer mat (300) further comprises a heat exchange portion (330) surrounded by the insulating portion (310), the heat exchange portion (330) extending through the measurement window (110) to the high-voltage conductor in the heat transfer direction (W) in order to conduct thermal energy in the heat transfer direction (W) between the high-voltage conductor and the temperature sensor element (410) adjacent to the heat exchange portion, A temperature sensor (10) comprising a base plate (100) having positioning elements (116, 117), and further comprising an opposing positioning element (316) for aligning the elastomer mat (300) perpendicular to the heat transfer direction in the insulating portion (310) of the elastomer mat (300), and / or a temperature sensor (10) having an air pocket (616) between the edge (112) of the measuring window (110) and the heat exchange portion (330) to prevent heat conduction between the heat exchange portion (330) and the edge (112) of the measuring window (110).

Images