Temperature measuring device for measuring the temperature of an electrical connector terminal

Abstract

The invention relates to a temperature measuring device for measuring the temperature of a terminal of an electrical connector, comprising a printed circuit board (12, 412), a temperature sensor (14, 414) mounted on the printed circuit board (12, 412), and a heat-conducting sleeve (20, 120, 220, 320, 62, 72, 420). The heat-conducting sleeve comprises a first heat-conducting portion (22, 422) having a recess (24, 424), a portion (16, 416) of the printed circuit board (12, 412) slides into the recess, and the first heat-conducting portion (22, 422) is in thermal contact with the temperature sensor (14, 414). The thermally conductive sleeve (20, 120, 220, 320, 62, 72, 420) also includes a second thermally conductive portion (44, 444) forming a flexible tab (46, 146, 246, 346, 446) extending from the first thermally conductive portion (22, 422) for contacting a terminal of an electrical connector.

Description

Technical Field

[0001] The invention relates to a temperature measuring device for measuring the temperature of a terminal of an electric connector and comprising a heat-conducting sleeve, and also relates to a heat-conducting sleeve. Background Art

[0002] In areas such as electric vehicles, it is necessary to monitor the temperature of certain components to which voltage is applied.

[0003] This is even more necessary for fast charging of electric vehicles. In fact, high powers of up to 200A or more and voltages greater than 200V, or even 1000V (ie high voltage) are required.

[0004] Under high current conditions (especially current values ​​of 200A or more), the vehicle's circuits are more likely to heat up. For safety reasons, the temperature of these components should be measured.

[0005] The temperature of electrical components, for example the temperature of terminals of an electrical connector in an electric vehicle, is measured with the aid of temperature sensors.

[0006] like Figure 1A As shown in the illustrated assembly 1, it is known in the art to solder or weld the temperature sensors 3 to the printed circuit board 5. To allow heat transfer from the terminals 7 of the electrical connector 9 to each temperature sensor 3, a thermally conductive pad 11 is interposed between each terminal 7 and each temperature sensor 3. The thermally conductive pad 11 is in thermal contact with the terminals 7 and the temperature sensors 3. Heat transfer from the terminals 7 to the temperature sensors 3 is then possible via the thermally conductive pad 11. As a result, the temperature sensors 3 are able to measure the temperature of the terminals 7.

[0007] However, in order to keep the heat conducting plate 11 in place, it is necessary to partially accommodate the heat conducting plate 11 in a semicircular receiving portion 13 of a holder 15 made of plastic, such as a Figure 1B The heat conducting plate 11 is then held by the holder 15 and is squeezed between the printed circuit board 5 and each terminal 7 .

[0008] As a result, during the process of heat being transferred from the terminal 7 to the temperature sensor 3 , the heat is dissipated in the holder 15 , which affects the quality and sensitivity of the temperature measurement.

[0009] also, Figure 1A and 1B The arrangement shown in involves mounting the temperature sensor 3 sufficiently close to the edge 17 of the printed circuit board 5 so that the temperature sensor 3 can be in thermal contact with the heat conducting pad 11 .

[0010] However, in high-voltage applications, particularly above 200V or even 1000V, it is necessary for safety reasons to provide a relatively long creepage distance between the terminal 7 and the electrical components of the printed circuit board 5 (e.g., the temperature sensor 3). The creepage distance corresponds to the shortest path between two conductive components on the surface of the printed circuit board. As a result, the arrangement of the prior art assembly 1 is not well suited to allow for a suitable creepage distance for high-voltage applications.

[0011] The object of the present invention is to provide a temperature measuring device which provides a more accurate temperature measurement than was possible in the prior art, in particular in applications with high amperages (in particular values ​​of 200 A or more) and high voltages (i.e. above 200 V or even 1000 V), and which is a solution that is simple to implement. Summary of the Invention

[0012] The objectives of the present invention are achieved by a temperature measuring device for measuring the temperature of an electrical connector terminal. The temperature measuring device includes a printed circuit board, a temperature sensor mounted on the printed circuit board, and a thermally conductive sleeve. The thermally conductive sleeve includes a first thermally conductive portion having a groove in which a portion of the printed circuit board slides. The first thermally conductive portion is in thermal contact with the temperature sensor. The thermally conductive sleeve also includes a second thermally conductive portion forming a flexible tab extending from the first thermally conductive portion for contacting the terminal of the electrical connector.

[0013] The term "thermal conductivity" describes the ability of the sleeve to diffuse heat, ie to achieve heat transfer without macroscopic displacement of the material.

[0014] Due to the shape of its sleeve (also called a "sheath"), the thermally conductive sleeve slides onto a portion of the printed circuit board via the recess. The thermally conductive sleeve is then easily retained on the printed circuit board without the need for additional retaining parts. Heat transfer occurs without any intervening components via the thermally conductive sleeve's flexible tabs (which are adapted to make contact with the terminals of the electrical connector) to the first portion of the thermally conductive sleeve, which is in thermal contact with the temperature sensor.

[0015] Compared to the prior art, this makes it possible to reduce heat loss in heat transfer between the terminal of the electrical connector and the temperature sensor via the thermally conductive sleeve.

[0016] This results in improved sensitivity and quality of temperature measurement of the electrical connector terminals.

[0017] The flexible tabs provide a simple and easily implemented means for contacting the electrical connector terminals.

[0018] In addition, with Figure 1A and 1BCompared to the prior art shown, the sleeve shape increases the creepage distance because it has a more elongated shape than the heat conducting disc 11 .

[0019] The temperature measuring device according to the present invention can be further improved through the following embodiments.

[0020] According to one embodiment, the free end of the flexible tab may have a concave shape, in particular a "V" shape, a "U" shape, a semicircular shape or a semi-elliptical shape.

[0021] The free ends of the flexible tabs are intended to make contact with the terminals of the electrical connector.

[0022] The geometry of the profile of the free end of the flexible tab can be defined to match the geometry of the terminal, thereby further improving contact of the free end of the tab with the circumference of the electrical connector terminal.

[0023] The shape of the free end of the flexible tab is adapted to the shape of the electrical terminal, thereby improving contact between the electrical connector terminal and the free end of the flexible tab.

[0024] This results in improved sensitivity and quality of temperature measurement of the electrical connector terminals.

[0025] According to one embodiment, the wall of the first heat conducting portion may include a groove extending parallel to a depth direction of the recess and a direction in which the heat conducting sleeve is inserted into the printed circuit board, the groove leading to the recess, and the temperature sensor being received in the groove.

[0026] The temperature sensor is soldered or welded to the printed circuit board. To prevent the temperature sensor from becoming loose due to the constraints imposed by the sleeve in the recess when inserting it into the printed circuit board, a through-groove is provided in the first portion. This groove allows the temperature sensor to be received, thus subjecting it to less mechanical stress during insertion into the sleeve, as it provides a dedicated housing specifically adapted to its dimensions.

[0027] According to one embodiment, the flexible tab may extend from a lateral side of the first heat conducting portion in a plane of the printed circuit board in an extending direction perpendicular to a depth direction of the recess of the first heat conducting portion.

[0028] This arrangement saves installation space for the temperature measuring device and the terminal of the electrical connector because it allows the length of the thermally conductive sleeve to be reduced compared to an embodiment in which a tab of the same length would extend in a direction parallel to the depth of the recess. Thus, a more compact solution is advantageously achieved.

[0029] According to one embodiment, an inner wall of the recess delimiting the first heat conducting portion of the heat conducting sleeve may be held by a form-fitting connection with a portion of the printed circuit board.

[0030] Providing a form-fit connection is a simple and easy-to-implement solution for holding the thermally conductive sleeve to the printed circuit board. Accidental detachment of the thermally conductive sleeve from the printed circuit board can thus be avoided.

[0031] According to one embodiment, the inner wall may comprise a protrusion protruding towards the recess, and the portion of the printed circuit board may comprise a corresponding retaining means formed by the notch.

[0032] The complementarity of the projections and recesses makes it possible to obtain a connection easily and simply by form-fitting.

[0033] According to one embodiment, the first heat conducting portion of the heat conducting sleeve may be frictionally coupled to a portion of the printed circuit board.

[0034] A friction connection involving frictional contact (also known as frictional engagement or frictional engagement) is an interaction that opposes relative motion between the printed circuit board and the thermally conductive sleeve. The latter is thus held to the circuit board by friction (i.e., frictional contact). This provides a simple and easily implemented retention mechanism.

[0035] According to one embodiment, the thermally conductive sleeve may be made of thermally conductive silicone.

[0036] Therefore, the sleeve can be a thermally conductive silicone sleeve. Silicone has very good elastic recovery, which is better than other elastomers and is therefore particularly suitable for forming the flexible protrusion of the sleeve.

[0037] Since silicone is non-conductive, it can be used as an electrical insulator between the terminals of an electrical connector and conductive components on a circuit board (such as a temperature sensor) to increase creepage distance.

[0038] Furthermore, silicone has good dielectric properties and high-temperature resistance. It is resistant to moisture and has good aging resistance. This makes it particularly suitable for temperature measurement devices in electric vehicles.

[0039] According to one embodiment, the first heat-conducting portion of the heat-conducting sleeve may include an open end leading to the recess and a closed end, wherein the closed end is opposite to the open end along a depth direction of the recess.

[0040] The fact that the sleeve is not configured as a tube (ie, having two open ends), but rather comprises a closed end, allows for better heat retention within the sleeve (particularly at the closed end), thereby avoiding heat losses that would reduce the quality and sensitivity of the temperature measurement.

[0041] This also increases the creepage distance to the electrical connector terminals, especially at high voltages, because more of the printed circuit board surface is covered by the thermally conductive silicone sleeve.

[0042] According to one embodiment, the temperature sensor may be integrally received within the recess of the first heat conducting portion of the heat conducting sleeve.

[0043] When the temperature sensor is integrally received in the first portion of the thermally conductive silicone sleeve, the creepage distance may be increased because the thermally conductive silicone sleeve covers more surface area of ​​the circuit board.

[0044] Furthermore, it is protected from environmental influences such as dust or other contamination by the thermally conductive sleeve.

[0045] The objectives of the present invention are also achieved by a thermally conductive sleeve configured for use with a temperature measuring device as described above, for measuring the temperature of a terminal of an electrical connector. The thermally conductive sleeve includes a first thermally conductive portion having a recess through which a portion of a printed circuit board of the temperature measuring device can slide. The thermally conductive sleeve also includes a second thermally conductive portion forming a flexible tab, which extends from the first thermally conductive portion to contact the terminal of the electrical connector.

[0046] The term thermal conductivity describes the ability of the sleeve to diffuse heat, i.e. to achieve heat transfer without macroscopic displacement of the material.

[0047] Due to its sleeve shape, the thermally conductive sleeve can be slid over a portion of the printed circuit board. This makes it easy to attach the thermally conductive sleeve to the printed circuit board without the need for additional retaining parts. Thus, heat transfer occurs without interfering components via the flexible tabs of the thermally conductive sleeve (adapted to contact the terminals of the electrical connector) to the first portion of the thermally conductive sleeve, which is in thermal contact with the temperature sensor.

[0048] Compared to the prior art, this makes it possible to reduce heat loss in heat transfer between the terminal of the electrical connector and the temperature sensor via the thermally conductive sleeve.

[0049] This results in improved sensitivity and quality of temperature measurement of the electrical connector terminals.

[0050] The flexible tabs provide a simple and easily implemented means for contacting the electrical connector terminals.

[0051] The thermally conductive sleeve according to the present invention can be further improved through the following embodiments.

[0052] According to one embodiment, the free end of the flexible tab may have a concave shape, in particular a "V" shape, a "U" shape, a semicircular shape or a semi-elliptical shape.

[0053] The free ends of the flexible tabs are intended to make contact with the terminals of the electrical connector.

[0054] The geometry of the profile of the free end of the flexible tab can be defined to match the geometry of the terminal, thereby further improving contact of the end of the tab with the circumference of the electrical connector terminal.

[0055] Thus, the shape of the free end of the flexible tab improves the contact between the terminal of the electrical connector and the end of the flexible tab.

[0056] This results in improved sensitivity and quality of temperature measurement of the electrical connector terminals.

[0057] According to one embodiment, the flexible tab may extend from a lateral side of the first heat conducting portion in an extending direction that is perpendicular to a depth direction of the recess of the first heat conducting portion.

[0058] This arrangement saves installation space for the temperature measuring device and the terminal of the electrical connector because it allows the length of the thermally conductive sleeve to be reduced compared to an embodiment in which a flexible tab of the same length would extend in a direction parallel to the depth of the recess. Thus, a more compact solution is advantageously achieved.

[0059] According to one embodiment, the sleeve may be made of thermally conductive silicone.

[0060] Thus, the sleeve may be a thermally conductive silicone sleeve.

[0061] Silicone has very good elastic recovery, superior to other elastomers, and is therefore particularly suitable for forming the flexible tabs of the sleeve.

[0062] Since silicone is non-conductive, it can be used as an electrical insulator between the terminals of an electrical connector and conductive components on a circuit board (such as a temperature sensor) to increase creepage distance.

[0063] Furthermore, silicone has good dielectric properties and high-temperature resistance. It is resistant to moisture and has good aging resistance. This makes it particularly suitable for temperature measurement devices in electric vehicles.

[0064] According to one embodiment, the first heat conducting portion may include an open end leading to the recess and a closed end, the closed end being opposite to the open end along a depth direction of the recess.

[0065] The fact that the sleeve is not configured as a tube (ie, having two open ends), but rather comprises a closed end, allows for better heat retention within the sleeve (particularly at the closed end), thereby avoiding heat losses that would reduce the quality and sensitivity of the temperature measurement.

[0066] This also increases the creepage distance that can occur on the terminals of the electrical connector, especially at high voltages, because more of the printed circuit board surface can be covered by the thermally conductive silicone sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The present invention and its advantages will be further explained below by means of preferred embodiments and with particular reference to the following drawings, in which:

[0068] Figure 1AAn assembly comprising terminals of an electrical connector and a temperature measuring device according to the prior art is depicted.

[0069] Figure 1B Depicts Figure 1A Shown are prior art components and holders according to the prior art.

[0070] Figure 2 A temperature measuring device according to a first embodiment of the present invention is shown.

[0071] Figure 3 A three-dimensional view of a thermally conductive sleeve according to a first embodiment of the present invention is shown.

[0072] Figure 4A A top view of a thermally conductive sleeve according to a first embodiment of the present invention is shown.

[0073] Figure 4B A top view of a thermally conductive sleeve according to a second embodiment of the present invention is shown.

[0074] Figure 4C A top view of a thermally conductive sleeve according to a third embodiment of the present invention is shown.

[0075] Figure 4D A top view of a thermally conductive sleeve according to a fourth embodiment of the present invention is shown.

[0076] Figure 5 A temperature measuring device including a thermally conductive sleeve according to a fifth embodiment of the present invention is shown.

[0077] Figure 6 A sectional view showing a temperature measuring device according to a sixth embodiment of the present invention.

[0078] Figure 7 A three-dimensional view showing an assembly including terminals of an electrical connector and a temperature measuring device according to a first embodiment of the present invention.

[0079] Figure 8 Shown Figure 7 Cross-sectional and top views of the components shown.

[0080] Figure 9 A temperature measuring device according to a seventh embodiment of the present invention is shown.

[0081] Figure 10 A three-dimensional view of a thermally conductive sleeve according to a seventh embodiment of the present invention is shown.

[0082] Figure 11 A cross-sectional view showing an assembly including a terminal of an electrical connector and a temperature measuring device according to a seventh embodiment of the present invention. DETAILED DESCRIPTION

[0083] The invention will now be described in more detail using advantageous embodiments in an exemplary manner and with reference to the accompanying drawings. The described embodiments are merely possible configurations, and it should be remembered that the various features described above may be provided independently of each other or may be omitted altogether when implementing the invention.

[0084] Figure 2 A temperature measuring device 10 according to a first embodiment of the invention is shown. This temperature measuring device 10 is intended to measure the temperature of an electrically conductive component, in particular the temperature of a terminal of an electrical connector.

[0085] The temperature measuring device 10 includes a printed circuit board (PCB) 12 on which is mounted at least one temperature sensor 14 ( Figure 2 Only one temperature sensor 14 is visible in the figure). The temperature sensor 14 is mounted on the face 12a of the PCB 12. In one embodiment (not shown), the temperature sensor 14 may be mounted on a face geometrically opposite to the face 12a.

[0086] In particular, the temperature sensor 14 is welded or soldered to a portion 16 of the PCB 12 having an elongated shape extending along the longitudinal axis A. As shown in FIG. Figure 2 The portion 16 shown has an elongated shape along the longitudinal axis A. The portion 16 terminates along the longitudinal axis A in a free end 18 having a curved profile in the plane of the circuit board 12. The plane of the circuit board 12 is parallel to Figure 2 The plane (XY) shown.

[0087] In another embodiment, similar to Figure 9 In the illustrated embodiment, and the embodiments described in greater detail below, the member 16 may have a rectangular shape along the longitudinal axis A.

[0088] According to the invention, the temperature measurement device 10 comprises a thermally conductive sleeve 20. The term "thermally conductive" means that the sleeve 20 is capable of diffusing heat, in other words enabling heat transfer without macroscopic displacement of material.

[0089] According to a first embodiment, the sleeve 20 is a heat-conducting silicone sleeve 20, i.e., it can transfer heat but does not conduct electricity. Therefore, it can act as an electrical insulator. The heat-conducting silicone sleeve 20 is formed integrally, for example, by molding.

[0090] Figure 2 On the right side, the thermally conductive sleeve 20 is shown in a position in which it is slid along the insertion direction D onto (ie, slidably engaged with) the portion 16 of the printed circuit board 12 .

[0091] exist Figure 2, another thermally conductive sleeve 20 has been slid over a portion 16 of the printed circuit board 12 such that the temperature sensor 14 (not visible) is in thermal contact with the thermally conductive sleeve 20. The thermally conductive sleeve 20 is then frictionally engaged with the portion 16 of the printed circuit board 12, thereby frictionally retaining the thermally conductive sleeve 20 to the printed circuit board 12.

[0092] The following will refer to Figure 2 and Figure 3 Further describing the thermally conductive sleeve 20 according to the first embodiment, Figure 3 A three-dimensional view of the thermally conductive sleeve 20 is depicted, providing more detail.

[0093] The heat-conducting sleeve 20 includes a first heat-conducting portion 22, such as Figure 2 and Figure 3 shown and in Figure 2 Highlighted with a dotted box.

[0094] The first heat conducting portion 22 includes a recess 24 (at Figure 3 ), into which the portion 16 of the circuit board 12 can be slid. The dimensions of the recess 24 are thus adapted to the dimensions of the component 16 and the height of the temperature sensor 14.

[0095] The recess 24 is defined by an inner wall 26 of the first heat conducting portion 22 . The recess 24 extends depthwise from a first end 28 of the first heat conducting portion 22 along a depth direction P. Thus, the first end 28 of the first heat conducting portion 22 includes an opening 30 leading to the recess 24 .

[0096] The depth of the recess 24 is Figure 3 The depth P of the recess 24 is measured from the first end 28 along a line parallel to the Figure 3 The depth P of the recess 24 is parallel to the insertion direction D (e.g., Figure 2 shown).

[0097] Thus, the first heat conducting portion 22 can slide on the portion 16 of the printed circuit board 12 along the insertion direction D by a length corresponding to the depth P of the recess 24. The length of the depth P can be limited, in particular increased, in order to improve the holding force of the thermally conductive sleeve 20 or / and increase the creepage distance (by increasing the distance covered by the thermally conductive sleeve 20).

[0098] As mentioned above Figure 2 As illustrated by the thermally conductive sleeve 20 shown on the left, once the thermally conductive sleeve 20 is engaged (by sliding along the insertion direction D) to the printed circuit board 12, there is frictional contact or frictional engagement between the surface of the portion 16 of the PCB and the inner wall 26 of the recess 24 of the first heat conductive portion 22. This frictional contact creates a frictional connection that serves to retain the thermally conductive sleeve 20 on the portion 16 of the printed circuit board 12.

[0099] The first heat conducting portion 22 includes a plurality of heat conducting portions along the depth direction P (ie, along the Figure 3 A second end 32 opposite the first end 28 (Y-axis of the Cartesian coordinate system shown).

[0100] In the first embodiment, the second end 32 is a closed end 32, i.e., an end without an opening. The second closed end 32 allows for reduced heat loss, thereby improving heat transfer. When the thermally conductive sleeve 20 is mounted on the printed circuit board 12, the second closed end 32 can also serve as an indicator to the operator because it provides a stop, such as an abutment, which indicates to the operator that the thermally conductive sleeve 20 has been fully slid over the component 16.

[0101] The second closed end 32 means that the recess 24 includes a closed end opposite the opening 30 along the depth P of the recess 24 (at Figure 2 and Figure 3 Not visible in the ). Figure 2 As shown on the left, once the thermally conductive sleeve 20 has been slid into its final position, the end portion 18 abuts the inner wall 26 at the closed end 32 of the recess 24 .

[0102] In such Figure 3 In the illustrated plane (XY), the first heat conducting portion 22 according to the first embodiment has a substantially rectangular shape at the first end 28 and a convex shape at the second end 32. In one embodiment, the second end 32 may have a substantially rectangular shape.

[0103] like Figure 3 As shown, the first heat conducting portion 22 is substantially flat, having a thickness L1 between two geometrically opposed walls 34, 36, each wall extending in planes (XY) parallel to each other. Figure 2 As shown on the left, when the thermal sleeve 20 is mounted on the PCB 12, the walls 34, 36 extend in a plane parallel to the plane (XY) in which the PCB 12 and its portion 16 extend. The two opposing walls 34, 36 of the first thermally conductive portion 22 are joined together by a lateral side 38.

[0104] According to the first embodiment, the wall 36 of the first heat conducting portion 22 comprises a groove 40 having a width L2 (see Figure 3 The groove 40 extends longitudinally along the depth direction P of the recess 24. The groove 40 extends in a direction parallel to the insertion direction D.

[0105] The groove 40 leads to the recess 24. The width L2 of the groove 40 (see Figure 3 ) is adapted to the width L3 of the temperature sensor 14 (see Figure 2 ). Therefore, the temperature sensor 14 can be received in the groove 40 of the thermal sleeve 20 along the insertion direction D.

[0106] The recess 40 allows receiving the temperature sensor 14 : the recess 40 provides a dedicated housing specifically adapted to its dimensions. Thus, when the thermally conductive sleeve 20 is inserted into the printed circuit board 12 along the insertion direction D, the temperature sensor 14 is subjected to less mechanical stress.

[0107] According to the first embodiment, the bottom 42 of the groove 40 is formed by the wall 36. The height L4 of the groove 40 (see Figure 3 ) corresponds to the height (not shown) of the temperature sensor 14. Therefore, according to the first embodiment, the temperature sensor 14 is entirely received in the first heat-conducting portion 22 of the thermally conductive sleeve 20. This not only protects the temperature sensor 14 from the surrounding environment, but also further improves the thermal contact between the temperature sensor 14 and the thermally conductive sleeve 20.

[0108] According to the present invention, the heat-conducting sleeve 20 further includes a second heat-conducting portion 44, such as Figure 2 and Figure 3 shown and in Figure 2 Highlighted with a dotted box.

[0109] The second heat-conducting portion 44 forms a flexible heat-conducting tab 46 that extends from the first portion 22 along the extension direction E for contacting the terminals of the electrical connector (eg, Figure 7 and Figure 8 shown).

[0110] The flexible tab 46 having a substantially flat shape extends in an extension plane. The extension plane corresponds to Figure 2 and Figure 3 When the thermal sleeve 20 is mounted on the circuit board 12, as shown in FIG. Figure 2 As shown on the left side of FIG, the extension plane of the flexible tab 46 is parallel to the plane (XY) in which the circuit board 12 and its portion 16 extend. Because the tab 46 is flexible, it can bend, bend and fold. Therefore, the flexible tab 46 is flexible.

[0111] According to the first embodiment, the flexible tab 46 extends from the lateral side 38 of the first heat conducting portion 22 to the free end 48 of the flexible tab 46. Therefore, the extension direction E according to the first embodiment is perpendicular to the depth direction P of the recess 24 of the first heat conducting portion 22 of the heat conducting sleeve 20.

[0112] In another embodiment ( Figures 9 to 11 In the illustrated embodiment, a flexible tab 46 extends from the second end 32 of the first thermally conductive portion 22 .

[0113] In another embodiment (not shown), at least two flexible tabs 46 extend from the first thermally conductive portion 22 .

[0114] The flexible tab 46 may have a generally rectangular shape. In this case, the profile of the free end 48 of the flexible tab 46 will be substantially straight in the plane of extension (this embodiment is not shown).

[0115] Since the free end 48 of the flexible tab 46 is contoured to contact the terminal of the electrical connector (as described below with reference to Figure 7 and Figure 8 As explained above, the geometry of the profile of the free end 48 can advantageously be made to match the shape (in particular the circumference) and the diameter of the connector terminal. Thus, the shape of the free end 48 depends on the shape of the electrical connector terminal whose temperature the measuring device 10 is intended to determine.

[0116] Various examples of the profile geometry of the free end 48 of the flexible tab 46 are shown in FIG. Figures 4A to 4D 4 is shown in the extended plane, ie according to a top view of the flexible tab 46 in the plane (XY).

[0117] In each of these examples, the free end 48 of the flexible tab 46 is substantially concave in profile.

[0118] like Figure 4A as well as Figure 2 and Figure 3 As shown, the thermally conductive sleeve 20 according to the first embodiment includes a flexible tab 46 having a free end 48 having a “V” shaped profile 52 in the extension plane (XY).

[0119] Figure 4B A thermally conductive sleeve 100 according to a second embodiment is shown. The thermally conductive sleeve 100 comprises a flexible tab 146 having a free end 148 which, in the extension plane (XY), has a semicircular concave profile 152. The radius of the semicircle is intended to adapt to the radius of a terminal (not shown) at which the measuring device 10 is configured to determine the temperature.

[0120] Figure 4C A thermally conductive sleeve 200 according to a third embodiment is shown. The thermally conductive sleeve 200 comprises a flexible tab 246 having a free end 248 having a concave semi-elliptical profile 252 in the extension plane (XY). The dimensions of the semi-elliptical profile are intended to accommodate the dimensions, in particular the circumference, of a terminal (not shown) for which the measuring device 10 is configured to determine the temperature.

[0121] Figure 4D The thermally conductive sleeve 300 according to the fourth embodiment is shown. The thermally conductive sleeve 300 includes a flexible tab 346 having a cutout 350 at a free end 348. The cutout 350 does not start directly from the free end 348, but corresponds to a hole 350 cut into the flexible tab 346 near the free end 348. The shape of the cutout 350 is not limited to Figure 4D The geometry shown.

[0122] In the fourth embodiment, the profile 352 has a straight shape because the free end 348 has a rectangular shape. The presence of the cutout 350 allows the free end 348 to have a concave profile 352 when the free end 348 bears against, for example, a wall of a terminal of an electrical connector. In effect, when bearing against the wall of the terminal, the free end 348 deforms so as to at least partially close the aperture 350. Since the cutout 350 is concave, this creates a concave profile 352 at the free end 348.

[0123] The present invention is not limited to Figures 4A to 4D The shown geometries also relate to any other type of concave profile.

[0124] Figure 5 A temperature measurement device 60 is depicted, comprising a thermally conductive sleeve 62 according to a fifth embodiment of the present invention.

[0125] Already used to describe Figure 2 and Figure 3 Elements having the same reference numerals will not be described in detail again, and reference is made to the above description thereof.

[0126] Similar to the first embodiment, the thermally conductive sleeve 62 according to the fifth embodiment of the present invention has a first thermally conductive portion 22, which includes a groove 40 having a width L2 and extending longitudinally along the depth direction P of the recess 24. The groove 40 opens into the recess 24. The width L2 of the groove 40 is adapted to the width L3 of the temperature sensor 14. Therefore, the temperature sensor 14 can be received in the groove 40 of the thermally conductive sleeve 62.

[0127] Unlike the first embodiment, in the fifth embodiment, the wall 36 does not form the bottom of the groove. Therefore, in the fifth embodiment, the temperature sensor 14 is not entirely received in the first heat-conducting portion 22 of the thermally conductive sleeve 62. Therefore, even when the thermally conductive sleeve 62 is slid on the PCB 12, the surface 14a of the temperature sensor 14 is visible, as shown in FIG. Figure 5 As shown, this provides a visual indication and means of verification.

[0128] Figure 6 A cross-sectional view in the plane (XY) of a temperature measuring device 70 according to a sixth embodiment of the present invention is shown, the temperature measuring device 70 including a thermally conductive sleeve 42 .

[0129] Already used to describe Figure 2 and Figure 3 Elements having the same reference numerals will not be described in detail again, and reference is made to the above description thereof.

[0130] Similar to the first embodiment, the heat conductive sleeve 72 according to the sixth embodiment of the present invention includes an inner wall 26 defining the recess 24 of the first heat conductive portion 22 .

[0131] According to a sixth embodiment of the invention, the inner wall 26 of the lateral side 38 of the first portion comprises retaining means 74. The retaining means 74 are retained in a form-fitting manner on corresponding retaining means 76 of the portion 16 of the printed circuit board 12 on which the thermally conductive sleeve 72 is inserted.

[0132] According to the sixth embodiment of the present invention, the stop means 74 is formed by a protrusion 78 that protrudes from the inner wall 26 toward the recess 24. Figure 6 In the example shown, the projection 78 has a hemispherical shape. The corresponding retaining means 76 is formed by a recess 80 having a shape complementary to the projection 78. The recess 80 is formed in the portion 16 of the printed circuit board 12. The recess 80 has a semicircular shape in the plane (XY) of the printed circuit board 12.

[0133] In another embodiment (not shown), the stop means 74 and the retaining means 76 may have different Figure 6 The geometry shown.

[0134] In one embodiment (not shown), the circuit board portion 16 may include a plurality of retention features 76 .

[0135] Providing a form-fit connection is a simple and easily implemented solution for retaining the thermally conductive sleeve 72 to the circuit board 12 and can prevent the thermally conductive sleeve 72 from accidentally becoming detached from the circuit board 12. This is particularly useful for applications in electric vehicles where the temperature measuring device 70 may be subject to shock and vibration. The thermally conductive sleeve 20, 120, 220, 320, 62 according to the aforementioned embodiments may also include a stopper 74.

[0136] Figure 7 A three-dimensional view of an assembly 90 is depicted, comprising terminals 92 of an electrical connector 94 and a temperature measurement device 10 according to a first embodiment of the invention.

[0137] Figure 8 Shown Figure 7 Assembly 90 is shown in cross-section and top view.

[0138] Let's describe it together Figure 7 and Figure 8 .

[0139] Already used to describe Figure 2 and Figure 3 Elements having the same reference numerals will not be described in detail again, and reference is made to the above description thereof.

[0140] exist Figure 7 and Figure 8 In, as mentioned above Figure 2 and Figure 3 As explained, the first heat-conducting portion 22 is frictionally connected to the portion 16 of the printed circuit board 12. The heat-conducting sleeve 20 is thus held on the printed circuit board 12 by friction.

[0141] exist Figure 7 , the thermally conductive sleeve 20 is shown in an initial, so-called unbent state, in which the flexible tabs 46 are not bent. In the initial state, the flexible tabs 46 extend in an extension plane corresponding to the plane (XY) of the printed circuit board 12.

[0142] The second heat conducting portion 44 of the flexible tab 46 is more flexible than the first heat conducting portion 22, particularly because the first heat conducting portion 22 is in its concave portion ( Figure 7 The portion (16) of the printed circuit board 12 is received in the heat conducting portion (not visible in FIG), which gives it greater rigidity than the second heat conducting portion 44.

[0143] exist Figure 7 On the right side of FIG, the thermally conductive sleeve 20 is shown in a bent state, in which the flexible tab 46 is bent. In the bent state, the flexible tab 46 extends in the plane of the bend, so the bending plane is not parallel to the plane (XY), which corresponds to the plane of the printed circuit board 12.

[0144] Insertion of the terminal 92 along an insertion direction I, which is perpendicular to the printed circuit board 12 and therefore perpendicular to the plane (XY), has the effect of bending the flexible tabs 46 of the thermally conductive sleeve 20. Because the tabs 46 are flexible and bendable, the operator encounters little resistance when inserting the terminal 92, which facilitates assembly.

[0145] like Figure 8 As shown, the contour 52 of the free end 48 of the flexible tab 46 contacts the terminal 92. Thus, heat transfer from the terminal 92 to the temperature sensor 14 occurs via the flexible tab 46 and the first thermally conductive portion 22, which is in thermal contact with the temperature sensor 14.

[0146] The sleeve shape makes it possible to reduce heat losses during heat transfer between the terminals 92 of the electrical connector 94 and the temperature sensor 14 via the thermally conductive sleeve 20 .

[0147] The silicone sleeve shape also allows for increased creepage distance to the terminals 92 because the sleeve 20 electrically insulates the portion 16 of the circuit board 12 that is covered by the sleeve 20 .

[0148] Advantageously, the location of the temperature sensor 14 on the printed circuit board 12 is selected to limit the path followed by heat transfer, thereby improving the sensitivity and quality of the temperature measurement.

[0149] Figure 9 A temperature measuring device 410 according to a seventh embodiment of the present invention is depicted. This temperature measuring device 410 is intended to measure the temperature of an electrically conductive component, in particular the temperature of a terminal of an electrical connector, such as Figure 11 shown.

[0150] The temperature measuring device 410 includes a PCB 412 having at least one temperature sensor mounted on one side 412b of the PCB 412. Figure 9 Only one side 412a is visible, which is geometrically opposite to the side 412b, so that the two temperature sensors of the seventh embodiment (one for each sleeve 420) are Figure 9 However, in Figure 11 In the cross-sectional view of FIG, the temperature sensor 414 is visible on the surface 416b.

[0151] More specifically, the temperature sensor is welded or soldered to a portion 416 of the circuit board 412 , the portion 416 having an elongated shape extending along the longitudinal axis A. The portion 416 terminates along the longitudinal axis A at a free end 418 . Figure 9 The illustrated portion 416 has a rectangular shape along the longitudinal axis A with rounded or chamfered corners at the free end 418 .

[0152] The plane of the circuit board 412 is parallel to Figure 9 The plane (XY) shown.

[0153] As in the sixth embodiment, the portion 416 of the circuit board 412 into which the thermally conductive sleeve 420 is inserted includes a retaining feature 476 formed by a recess 480. The recess 480 has a semicircular shape in the plane (XY) of the circuit board 412. In one embodiment (not shown), the portion 416 of the circuit board 412 can include a plurality of retaining features 476.

[0154] According to the present invention, the temperature measuring device 410 includes a thermally conductive sleeve 420. It should be noted that Figure 9 The two thermally conductive sleeves 420 shown, Figure 10 The thermally conductive sleeve 420 and Figure 11 The illustrated thermally conductive sleeves 420 are identical to one another.

[0155] In particular, the sleeve 420 is a thermally conductive silicone sleeve, ie, it can transfer heat but does not conduct electricity, and thus, it can act as an electrical insulator.

[0156] Figure 9 On the left side, the thermally conductive sleeve 420 is shown in a ready-to-slide position, ie slidably engaged along the insertion direction D to the portion 416 of the circuit board 412 .

[0157] exist Figure 9 , another thermal sleeve 420 has been slid over portion 416 of PCB 412 such that a temperature sensor (not visible) is in thermal contact with the thermal sleeve 420. The thermal sleeve 420 is then frictionally engaged with portion 416 of PCB 412, thereby retaining the thermal sleeve 420 on circuit board 412.

[0158] As in the sixth embodiment, the thermally conductive sleeve 420 includes retaining means, such as protrusions (not visible), which are retained in a form-fitting manner with corresponding retaining means 476 of the portion 416 of the printed circuit board 412 onto which the thermally conductive sleeve 420 is inserted. The form-fitting connection prevents the thermally conductive sleeve 420 from being accidentally detached from the portion 416. This is particularly useful for applications in electric vehicles, where the temperature measuring device 410 may be subject to shock and vibration.

[0159] Refer to the following Figure 9 and Figure 10 Further describing the thermally conductive sleeve 420 according to the seventh embodiment, Figure 10 A three-dimensional view of the thermal sleeve 420 is depicted, providing more detail.

[0160] The heat-conducting sleeve 420 includes a first heat-conducting portion 422 and a second heat-conducting portion 444. Figure 10 Shown in.

[0161] As in the first embodiment, the first heat conducting portion 422 includes a recess 424 (only in the Figure 10 The dimensions of the recess 424 are thus adapted to the dimensions of the portion 416 and the height of the temperature sensor (the temperature sensor 414 is located at Figure 11 (visible in the cross-sectional view).

[0162] The recess 424 is defined by an inner wall 426 of the first heat conducting portion 422. The recess 424 extends in depth from a first end 428 of the first heat conducting portion 422 along a depth direction P. Thus, the first end 428 of the first heat conducting portion 422 includes an opening 430 that leads to the recess 424. According to the seventh embodiment, the opening 430 is rectangular.

[0163] The depth of the recess 424 is Figure 10 The depth P of the recess 424 is measured from the first end 428 along the axis parallel to the Figure 10 The depth P of the recess 424 is parallel to the insertion direction D (as shown in FIG. Figure 9 shown).

[0164] Thus, the first heat conducting portion 422 can slide on the portion 416 of the printed circuit board 412 along the insertion direction D by a length corresponding to the depth P of the recess 424. The length of the depth P can be limited, in particular increased, in order to improve the holding force of the thermally conductive sleeve 420 or / and to increase the creepage distance (by increasing the distance covered by the thermally conductive silicone insulating sleeve 420).

[0165] As mentioned above Figure 9 As explained with respect to the thermally conductive sleeve 420 shown on the right, once the thermally conductive sleeve 420 is engaged (by sliding it along the insertion direction D) to the printed circuit board 412, there is frictional contact or frictional engagement between the surfaces 416a, 416b of the printed circuit board portion 416 and the inner wall 426 of the recess 424 of the first heat conductive portion 422. This frictional contact creates a frictional connection that holds the thermally conductive sleeve 420 to the portion 416 of the circuit board portion 412.

[0166] The first heat conducting portion 422 includes a plurality of heat conducting portions along the depth direction P (ie, along the Figure 10 A second end 432 opposite the first end 428 (Y-axis of the Cartesian coordinate system shown).

[0167] In the first embodiment, the second end 432 is a closed end 432, i.e., an end without an opening. The second closed end 432 reduces heat loss, thereby improving heat transfer. When the thermally conductive sleeve 420 is mounted on the circuit board 412, the second closed end 432 can also serve as an indicator for the operator because it provides a stop, such as an abutment, which indicates to the operator that the thermally conductive sleeve 420 has been fully slid onto the portion 416.

[0168] The second closed end 432 means that the recess 424 includes a closed end opposite to the opening 430 along the depth P of the recess 424 (at Figure 11 Once the thermal sleeve 420 is slid into its final position, as shown in FIG. Figure 11 As shown in the cross-sectional view of , the free end 418 abuts against the inner wall 426 at the closed end of the recess 424 .

[0169] In such Figure 10 In the illustrated plane (XY), the first heat conducting portion 422 has a substantially rectangular shape at the first end 428 and a convex shape at the second end 432. In a variation, the second end 432 may have a generally rectangular shape.

[0170] The first heat conducting portion 422 is substantially flat and has a thickness L1 between two geometrically opposite walls 434, 436, each wall extending in planes (XY) parallel to each other, as shown. Figure 10 When the thermal sleeve 420 is mounted on the PCB 412, as shown in FIG. Figure 9As shown on the right side of FIG, the walls 434, 436 extend in a plane parallel to the plane (XY) in which the PCB 412 and its portion 416 extend. The two opposing walls 434, 436 of the first heat conducting portion 422 are joined together by a lateral side 438.

[0171] According to the seventh embodiment, unlike the first and fifth embodiments, the wall 436 of the first heat conducting portion 422 does not include a longitudinal groove.

[0172] Therefore, in the seventh embodiment, the recess 424 has a rectangular cross section with a width H1 and a length H2 (see FIG. Figure 10 ). Width H1 corresponds to the total height H4 of portion 416 and temperature sensor 414 soldered or brazed to PCB 412 (only in Figure 11 ). Length H2 corresponds to width H3 of portion 416 of circuit board 412 (see Figure 9 ).

[0173] According to the seventh embodiment, unlike the first and fifth embodiments, the first portion 422 is provided with a collar 423 formed by a shoulder 423 protruding from the outer wall (including walls 434, 436, 438) of the first portion 422 around the periphery of the first portion 422. The collar 423 serves to mechanically reinforce the first portion 422 and provides a means for an operator to clamp the thermal sleeve 420 to the circuit board 412.

[0174] According to the seventh embodiment, and like the first embodiment, the temperature sensor 414 is integrally received within the first heat-conducting portion 422 of the heat-conducting sleeve 420 (see FIG. Figure 11 This not only protects the temperature sensor from environmental influences, but also further improves the thermal contact between the temperature sensor 414 and the thermally conductive sleeve 420 .

[0175] According to the present invention, the heat-conducting sleeve 420 further includes a second heat-conducting portion 444, such as Figure 10 shown.

[0176] The second heat-conducting portion 444 forms a flexible heat-conducting tab 446 that extends from the first portion 422 along the extension direction E to contact the terminal of the electrical connector (eg, Figure 7 and Figure 8 shown).

[0177] The flexible tab 446 having a substantially flat shape extends in an extension plane. The extension plane corresponds to Figure 9 and Figure 10 When the thermal sleeve 420 is mounted on the circuit board 412, as shown in FIG. Figure 9As shown on the right side of FIG, the extension plane of the flexible tab 446 is parallel to the plane (XY) in which the circuit board 412 and its portion 416 extend. Because the flexible tab 446 is flexible, it can be deformed or even bent or folded. Therefore, the flexible tab 446 is flexible.

[0178] According to the seventh embodiment, the flexible tab 446 extends from the closed end 432 of the first heat-conducting portion 422 to the free end 448 of the flexible tab 446. Therefore, unlike other embodiments, the extension direction E according to the seventh embodiment is parallel to the depth direction P of the recess 424 of the first heat-conducting portion 422 of the heat-conducting sleeve 420.

[0179] The flexible tab 446 may have a generally rectangular shape. In this case, the profile of the free end 448 of the flexible tab 446 will be substantially straight in the plane of extension (this embodiment is not shown).

[0180] Since the free end 448 of the flexible tab 446 is contoured to contact the terminal of the electrical connector (as previously described with reference to FIG. Figure 7 and Figure 8 As explained above, the geometry of the profile of the free end 448 can advantageously be manufactured according to the shape (in particular the circumference) and the diameter of the connector terminal. Thus, the shape of the free end 448 depends on the shape of the electrical connector terminal whose temperature the measuring device 410 is intended to determine.

[0181] In the seventh embodiment, the thermally conductive sleeve 420 includes a flexible tab 446 having a free end 448 with a concave semi-elliptical profile 452 in the extension plane (XY).

[0182] Figure 11 A cross-sectional view of an assembly including a terminal 92 of an electrical connector and a temperature measuring device 410 according to a seventh embodiment of the present invention is depicted.

[0183] Already used to describe Figure 9 and Figure 10 Elements having the same reference numerals will not be described in detail again, and reference is made to the above description thereof.

[0184] The thermally conductive sleeve 420 is shown in cross-section in a bent state in which the flexible tabs 446 are bent. In the bent state, the flexible tabs 446 extend in a plane of curvature that is not parallel to the plane (XY) or the plane of the printed circuit board 412.

[0185] Because the flexible tab 446 according to the seventh embodiment is shorter along the extension direction E than the tab 46 according to the first embodiment and extends from the closed end 432 (rather than from the lateral side 438), the flexible tab 446 is less likely to bend due to the insertion of the terminal 92 than in the first embodiment. Nevertheless, the insertion of the terminal 92 along the insertion direction I, which is perpendicular to the circuit board and therefore perpendicular to the plane (XY), causes the flexible tab 446 of the thermally conductive sleeve 420 to bend. Because the tab 446 is flexible and bendable, the operator encounters little resistance when inserting the terminal 92, which facilitates assembly.

[0186] Profile 452 of free end 448 of flexible tab 446 contacts terminal 92. Thus, heat transfer from terminal 92 to temperature sensor 414 occurs via flexible tab 446 and first heat conducting portion 422, which is in thermal contact with temperature sensor 414.

[0187] Due to the sleeve shape, heat loss during heat transfer between the terminal 92 of the electrical connector and the temperature sensor 414 via the thermally conductive sleeve 420 may be reduced.

[0188] The silicone sleeve shape also allows for increased creepage distance to the terminals 92 because the sleeve 420 electrically insulates the portion 416 of the PCB 412 that is covered by the sleeve 420 .

[0189] Advantageously, the location of the temperature sensor 414 on the printed circuit board 412 is selected to limit the path followed by heat transfer, thereby improving the sensitivity and quality of the temperature measurement.

[0190] The various embodiments described above can be combined with each other.

[0191] Reference Signs List

[0192] 1: Components (according to existing technology)

[0193] 3: Temperature sensor (according to existing technology)

[0194] 5: Printed circuit board (according to existing technology)

[0195] 7: Terminal (according to existing technology)

[0196] 9: Electrical connector (according to existing technology)

[0197] 11: Heat conducting plate (according to existing technology)

[0198] 13: Receiving unit (according to existing technology)

[0199] 15: Retaining element (according to the prior art)

[0200] 17: Edge (according to existing technology)

[0201] 10: Temperature Measuring Device According to the First Embodiment

[0202] 12: Printed Circuit Board (PCB)

[0203] 16: Printed circuit board part

[0204] 18: Free end

[0205] 20: Thermally conductive sleeve according to the first embodiment

[0206] 22: The first heat conduction part

[0207] 24: concave part

[0208] 26: Inner wall

[0209] 28: First End

[0210] 30: Opening

[0211] 32: Second end

[0212] 34, 36: Opposite walls

[0213] 38: Sideways

[0214] 40: Groove

[0215] 42: Bottom of the groove

[0216] 44: Second heat conduction part

[0217] 46, 146, 246, 346: Thermally conductive flexible tabs

[0218] 48, 148, 248, 348: Free end

[0219] 52, 152, 252, 352: outline, contour

[0220] 60: Temperature measuring device according to the fifth embodiment

[0221] 62: Thermally conductive sleeve according to the fifth embodiment

[0222] 70: Temperature measuring device according to the sixth embodiment

[0223] 72: Thermally conductive sleeve according to the sixth embodiment

[0224] 74: Stop device

[0225] 76: Holding device

[0226] 78: Protrusion

[0227] 80: Notch

[0228] 90: Components

[0229] 92: Terminal

[0230] 94: Electrical connector

[0231] 120: Thermally conductive sleeve according to the second embodiment

[0232] 220: Thermally conductive sleeve according to the third embodiment

[0233] 320: Thermally conductive sleeve according to the fourth embodiment

[0234] 350: cutout, hole

[0235] 410: Temperature measuring device according to the seventh embodiment

[0236] 412: Printed Circuit Board

[0237] 416: Part of the printed circuit board

[0238] 416a, 416b: Opposite surfaces

[0239] 418: Free end

[0240] 420: Thermally conductive sleeve according to the seventh embodiment

[0241] 422: First heat conduction part

[0242] 423: Ring, shoulder

[0243] 424: concave part

[0244] 426: Inner wall

[0245] 428: First End

[0246] 430: Opening

[0247] 432: Second end

[0248] 434, 436: Opposite walls

[0249] 438: Sideways

[0250] 444: Second heat conduction part

[0251] 446: Thermally conductive flexible tabs

[0252] 448: Free end

[0253] 452: outline, contour

[0254] 476: Holding device

[0255] 480: Notch

[0256] A: Longitudinal axis

[0257] D: Insertion direction of thermal sleeve

[0258] I: Terminal insertion direction

[0259] E: extension direction

[0260] H1: Width

[0261] H2: Length

[0262] H3: Width

[0263] H4: Height

[0264] L1: thickness

[0265] L2: slot width

[0266] L3: Width of the temperature sensor

[0267] L4: Height

[0268] P: Depth of recess

[0269] X, Y, Z: Coordinate axes of the Cartesian coordinate system

Claims

1. A temperature measuring device for measuring the temperature of a terminal of an electrical connector, comprising: Printed circuit boards (12, 412), a temperature sensor (14, 414), mounted on the printed circuit board (12, 412), A thermally conductive sleeve (20, 120, 220, 320, 62, 72, 420) includes a first thermally conductive portion (22, 422) having a recess (24, 424) into which a portion (16, 416) of the printed circuit board (12, 412) slides. The first heat conducting portion (22, 422) is in thermal contact with the temperature sensor (14, 414), The thermally conductive sleeve (20, 120, 220, 320, 62, 72, 420) further includes a second thermally conductive portion (44, 444) forming a flexible tab (46, 146, 246, 346, 446) extending from the first thermally conductive portion (22, 422) for contacting a terminal of the electrical connector. The flexible tab (46, 146, 246) extends from a lateral side (38) of the first heat-conducting portion (22) in an extension direction (E) in the plane of the printed circuit board (12), the extension direction (E) being perpendicular to a depth direction (P) of the recess (24) of the first heat-conducting portion (22).

2. The temperature measuring device according to claim 1, wherein The free end (48, 148, 248, 448) of the flexible tab (46, 146, 246, 446) has a concave shape.

3. The temperature measuring device according to claim 1 or 2, wherein: The wall (26) of the first heat-conducting portion (22) comprises a groove (40) extending parallel to a depth direction (P) of the recess (24) and an insertion direction (D) of the heat-conducting sleeve (20, 120, 220, 320, 62, 72) into the portion (16) of the printed circuit board (12), the groove (40) leading to the recess (24) and the temperature sensor (14) being received in the groove (40).

4. The temperature measuring device according to claim 1 or 2, wherein: An inner wall (26) of a recess (24) defining a first heat-conducting portion (22) of the heat-conducting sleeve (72) is retained by a form-fitting connection with the portion (16) of the printed circuit board (12).

5. The temperature measuring device according to claim 4, wherein: The inner wall (26, 426) comprises a protrusion (78) projecting towards the recess (24, 424), and the portion (16, 416) of the printed circuit board (12, 412) comprises a corresponding retaining means (76, 476) formed by a notch (80, 480).

6. The temperature measuring device according to claim 1 or 2, wherein: The first heat-conducting portion (22, 422) of the heat-conducting sleeve (20, 120, 220, 320, 62, 72, 420) is frictionally connected to the portion (16, 416) of the printed circuit board (12, 412).

7. The temperature measuring device according to claim 1 or 2, wherein: The heat-conducting sleeve (20, 120, 220, 320, 62, 72, 420) is made of heat-conducting silicone resin.

8. The temperature measuring device according to claim 1 or 2, wherein: The first heat-conducting portion (22, 422) of the heat-conducting sleeve (20, 120, 220, 320, 62, 72, 420) includes an open end (28, 30, 428, 430) and a closed end (32, 432), wherein the open end leads to the recess (24, 424), and the closed end (32, 432) is opposite to the open end (28, 30, 428, 430) along a depth direction (P) of the recess (24, 424).

9. The temperature measuring device according to claim 1 or 2, wherein: The temperature sensor (14, 414) is integrally received in a recess (24, 414) of a first heat-conducting portion (22, 422) of the heat-conducting sleeve (20, 120, 220, 320, 72, 420).

10. The temperature measuring device according to claim 2, wherein: The free end (48, 148, 248, 448) of the flexible tab (46, 146, 246, 446) has a "V" shape, a "U" shape, a semicircular shape or a semi-elliptical shape.

11. A thermally conductive sleeve (20, 120, 220, 320, 62, 72, 420), configured for use in a temperature measuring device according to any one of claims 1 to 10, the temperature measuring device being used to measure the temperature of a terminal of an electrical connector. The invention comprises a first heat conducting portion (22, 422) having a recess (24, 424) through which a portion of a circuit board of the temperature measuring device can slide, The thermally conductive sleeve (20, 120, 220, 320, 62, 72, 420) also includes a second thermally conductive portion (44, 444) forming a flexible tab (46, 146, 246, 346, 446) extending from the first thermally conductive portion (22) for contacting a terminal of the electrical connector.

12. The thermally conductive sleeve according to claim 11, wherein: The free end (48, 148, 248, 448) of the flexible tab (46, 146, 246, 446) has a concave shape. 13 . The thermally conductive sleeve according to claim 11 , wherein the thermally conductive sleeve is made of thermally conductive silicone resin.

14. The thermally conductive sleeve according to any one of claims 11 to 12, wherein: The first heat conducting portion (22, 422) includes an open end (28, 30, 428, 430) and a closed end (32, 432), wherein the open end leads to the recess (24, 424), and the closed end (32, 432) is opposite to the open end (28, 30, 428, 430) along the depth direction (P) of the recess (24, 424).

15. The thermally conductive sleeve according to any one of claims 11 to 12, wherein: The free end (48, 148, 248, 448) of the flexible tab (46, 146, 246, 446) has a "V" shape, a "U" shape, a semicircular shape or a semi-elliptical shape.

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