Electrical machine with a mounting bracket for thermally coupling a temperature sensor to a stator winding

Abstract

An electrical machine (1) is specified with a stator (6, 6a) which has a stator laminated core (7, 7a) and a stator winding (8, 8a) arranged in the stator laminated core (7, 7a). The electrical machine (1) also comprises a temperature sensor (13, 13a) which is thermally conductively coupled to the stator winding (8, 8a) and is designed to measure a temperature of the stator winding (8, 8a). The thermally conductive coupling is effected by a fastening clamp (14, 14a, 14b) with a latching connection (30), wherein the fastening clamp (14, 14a, 14b) presses the temperature sensor (13, 13a) against the stator winding (8, 8a) or a heat-conducting element (16, 16a) thermally conductively connected thereto. Furthermore, a vehicle (32) with such an electric machine (1) is specified, as well as a method for producing a thermally conductive coupling of a temperature sensor (13, 13a..13c) with a stator winding (8, 8a) or a heat-conducting element (16, 16a) of an electrical machine (1) thermally connected thereto.

Description

TECHNICAL FIELD

[0001] The invention relates to an electrical machine with a stator, which has a stator core with a plurality of axially stacked stator cores and a stator winding arranged in the stator core. Furthermore, the electrical machine comprises a temperature sensor which is thermally conductively coupled to the stator winding and configured to measure a temperature of the stator winding. Furthermore, the invention relates to a vehicle with such an electrical machine and to a method for establishing a thermally conductive coupling of a temperature sensor to a stator winding or to a heat-conducting element of an electrical machine which is thermally conductively connected to a stator winding. STATE OF THE ART

[0002] Such an electrical machine, such a vehicle, and such a method are fundamentally known from the prior art. The problem is that the known solutions for establishing a thermally conductive coupling between a temperature sensor and a stator winding of an electrical machine are sometimes cumbersome, difficult to reproduce, and / or difficult to maintain. For example, it is known to adhere a temperature sensor to the stator winding using a thermally conductive adhesive. Particularly problematic are the correct application of the adhesive, which must not be allowed to spread uncontrollably to other parts of the electrical machine, and the fixing of the temperature sensor until the adhesive has cured. These processes are not reproducible or can only be reproduced within narrow tolerance limits with considerable technical effort. Mounting the temperature sensor on the stator winding is also comparatively time-consuming.

[0003] Finally, the temperature sensor cannot be easily replaced if it is faulty. In particular, there is a high risk of damaging the stator winding insulation. DISCLOSURE OF THE INVENTION

[0004] An object of the invention is therefore to provide an improved electrical machine, an improved vehicle, and an improved method for producing a thermally conductive coupling of a temperature sensor to a stator winding of an electrical machine. In particular, a thermally conductive coupling of a temperature sensor to a stator winding of an electrical machine should be able to be achieved quickly and reliably. Furthermore, a simple replacement of the temperature sensor should also be enabled, in particular without damaging the insulation of the stator winding.

[0005] The object of the invention is achieved with an electrical machine of the type mentioned at the outset, in which the thermally conductive coupling of the temperature sensor with the stator winding is effected by a fastening clamp with a snap-in connection and the fastening clamp presses the temperature sensor against the stator winding or a heat-conducting element thermally conductively connected thereto.

[0006] Furthermore, the object of the invention is achieved with a vehicle having such an electric machine which is provided for driving the vehicle.

[0007] Finally, the object of the invention is achieved by a method for producing a thermally conductive coupling of a temperature sensor with a stator winding or a heat-conducting element of an electrical machine (in particular an electrical machine of the type mentioned above) which is thermally conductively connected thereto, which method comprises the following steps: - Arranging the temperature sensor and the stator winding or the heat conducting element in a mounting bracket and - Establishing the thermally conductive coupling of the temperature sensor with the stator winding or the heat-conducting element by closing the fastening clamp, whereby a snap-in connection of the fastening clamp engages and whereby the fastening clamp presses the temperature sensor against the stator winding or the heat-conducting element.

[0008] The proposed measures enable a thermally conductive coupling of a temperature sensor to a stator winding of the electrical machine to be carried out quickly and reliably. It is advantageous if the fastening clamp can be opened again non-destructively after it has been closed, whereby the coupling of the temperature sensor to the stator windings can be released. This enables easy replacement of the temperature sensor without damaging the insulation of the stator winding. However, it is also conceivable that the fastening clamp cannot be opened again non-destructively after it has been closed, and thus the thermal coupling between the temperature sensor and the stator winding cannot be released or cannot be released non-destructively, for example if this is not intended or necessary after the electrical machine has been put into operation.

[0009] The term "thermally conductive coupling of the temperature sensor with a stator winding" specifically means that heat exchange between the stator winding and the temperature sensor occurs by conduction, and, if at all, only to a negligible extent by radiation or convection. In particular, the proportion of heat transferred between the stator winding and the temperature sensor via conduction amounts to more than 95% of the total heat transferred between the stator winding and the temperature sensor. The term "thermally conductive connection" can also be used synonymously instead of "thermally conductive coupling."

[0010] The temperature sensor can be connected directly to the stator winding. The thermally conductive connection is then "direct." However, one or more heat-conducting elements can also be arranged between the stator winding and the temperature sensor to ensure heat conduction. The thermally conductive connection is then "indirect."

[0011] The thermally conductive element can also be designed as a "busbar." Especially if the thermally conductive element has a mechanically supporting function, it can also be considered a "sensor carrier" and named as such. An equivalent term for the "mounting clamp" is also "mounting clip."

[0012] Further advantageous embodiments and developments of the invention emerge from the subclaims and from the description in conjunction with the figures.

[0013] It is advantageous if ends of individual sections of the stator winding or ends of individual stator windings of the electrical machine are electrically connected to a connector which runs in a ring-shaped or arc-shaped manner around a stator axis of the stator and - the heat conducting element is formed by or encompassed by this connector.

[0014] For example, in this case, the stator winding can be constructed with "U-pins," whose free ends are electrically connected to the connector. However, the connector not only has an electrical function, but also acts as a heat-conducting element between the temperature sensor and the stator windings. The connector thus has a dual function, and the thermally conductive connection between the stator windings and the temperature sensor is therefore "indirect" in this case. In particular, the connector can form an electrical star point of the electrical machine.

[0015] It is particularly advantageous if the heat-conducting element has an extension to which the fastening clamp is attached. This makes it particularly easy to establish a thermally conductive coupling between the temperature sensor and the heat-conducting element. The connector can be formed integrally with the extension. Alternatively, the extension can be attached as a separate component to a base part of the connector. The extension preferably extends axially, but can also extend radially or both axially and radially.

[0016] It is also particularly advantageous if the clamping force generated by the mounting clamp (when closed) is in the range of 10 N ≤ F ≤ 40 N. This ensures good heat transfer to the temperature sensor, even during vibrations that occur during operation of the electrical machine. Furthermore, the temperature sensor is not subjected to excessive mechanical stress, and the mounting clamp can be easily closed by hand. The specified clamping force refers in particular to the new condition of the mounting clamp. Over time, this clamping force may decrease due to settlement and material creep.

[0017] In a further advantageous embodiment of the electrical machine, the fastening clamp has a raised portion that projects into a recess in the stator winding or the heat-conducting element, or the fastening clamp has a recess into which a raised portion of the stator winding or the heat-conducting element projects. This can result in better, for example, axial, securing of the heat-conducting element in the fastening clamp. For example, the recess in the stator winding or the heat-conducting element can be created with a chisel or punch. The area of ​​any resulting material upset is advantageously free of the fastening clamp in order to rule out any possible negative influence on the contact force.

[0018] It is advantageous if the mounting bracket has a guide for the heat-conducting element. This simplifies the installation of the mounting bracket on the heat-conducting element. For example, the guide can include tabs or pins arranged on the side.

[0019] It is advantageous if the temperature sensor is loosely positioned in a recess in the mounting bracket, for example, before attaching the temperature sensor and mounting bracket to a stator winding or a heat-conducting element. This allows the temperature sensor to be connected to the mounting bracket particularly quickly. It is also advantageous if the temperature sensor is attached to the mounting bracket. This prevents the temperature sensor from accidentally detaching from the mounting bracket during the assembly process.

[0020] It is also advantageous if a cable of the temperature sensor is routed through an opening in the mounting bracket, with the opening being smaller than the extension of the temperature sensor measured transversely to the longitudinal extension of the cable or of a heat-shrink tubing mounted on the cable. This allows the temperature sensor to be particularly well secured in the mounting bracket. A heat-shrink tubing that also encloses at least part of the temperature sensor can, due to its elasticity, also reinforce a thermally conductive coupling between the temperature sensor and the stator winding or the heat-conducting element.

[0021] It is also advantageous if an elastic element is arranged between the temperature sensor and the mounting clamp and / or between the stator winding or the heat-conducting element and the mounting clamp. The elastic element can be made of silicone, for example, and can also serve to better compensate for manufacturing tolerances. The elastic element can, in particular, be designed to reinforce the thermally conductive coupling of the temperature sensor with the stator winding or the heat-conducting element.

[0022] In one embodiment, the mounting bracket is constructed in multiple pieces. This can facilitate installation of the mounting bracket in certain circumstances, for example, if it needs to be mounted in a location that is difficult to access.

[0023] In another embodiment, the fastening clamp is constructed in one piece. This allows for particularly cost-effective production. Furthermore, individual parts of the fastening clamp cannot be lost, increasing process reliability during assembly.

[0024] Optionally, two pivotable parts of the mounting clamp are connected via a joint. The joint can be formed, for example, by a thin plastic bar.

[0025] It is advantageous if the fastening clip is made of plastic, especially polyphenylene sulfide. This makes it easy to manufacture, for example, using an injection molding process. SHORT DESCRIPTION OF THE CHARACTERS

[0026] Embodiments of the invention are illustrated by way of example in the accompanying schematic figures. They show: Fig. 1 an exemplary electrical machine shown schematically in half section; Fig. 2 shows a detailed embodiment of an exemplary stator in an oblique view; Fig. 3 an exemplary fastening clamp in the unassembled state in an oblique view; Fig. 4 the fastening clamp Fig. 3 with inserted temperature sensor; Fig. 5 the fastening clamp Fig. 3 and Fig. 4 with additionally inserted heat conducting element; Fig. 6 the fastening clip from the Fig. 3 to 5 in closed position; Fig. 7 the fastening clamp Fig. 5 in side view and Fig. 8 an exemplary vehicle with an electric machine of the proposed type. DETAILED DESCRIPTION OF THE INVENTION

[0027] By way of introduction, it should be noted that identical parts in the different embodiments are provided with the same reference symbols or component designations, possibly with different indices. The disclosure of a component contained in the description can be transferred mutatis mutandis to another component with the same reference symbol or component designation. Furthermore, the positional information chosen in the description, such as "top," "bottom," "rear," "front," "side," and so on, refers to the directly described and illustrated figure and, in the event of a change in position, is to be transferred mutatis mutandis to the new position.

[0028] Fig. 1 shows a half-section through a schematically illustrated electrical machine 1 with a multi-part machine housing 2 comprising a stator housing 3, a front bearing plate 4, and a rear bearing plate 5. The electrical machine 1 also has a stator 6, which has a stator core 7 (not shown in detail) and a stator winding 8 arranged in the stator core 7. Furthermore, the electrical machine 1 comprises a rotor shaft 9 with a rotor 10 seated thereon, which has a rotor core 11 (not shown in detail) and rotor magnets or rotor windings (not shown) arranged therein. The rotor shaft 9 is rotatably mounted relative to the stator 6 about a rotor axis or stator axis A by means of (rolling) bearings 12a, 12b. Specifically, the first bearing 12a is seated in the front bearing plate 4, and the second bearing 12b is seated in the rear bearing plate 5.

[0029] In addition, the electric machine 1 comprises a temperature sensor 13, which is arranged in a fastening clamp 14 and which is connected to a (sensor) cable 15 that is guided through the machine housing 2. The temperature sensor 13 is thermally conductively coupled to the stator winding 8 and is configured to measure a temperature of the stator winding 8. For this purpose, the electric machine 1 has a heat-conducting element 16 that is thermally conductively connected to the stator winding 8 and guided into the fastening clamp 14. The fastening clamp 14 presses the temperature sensor 13 against the heat-conducting element 16 in the closed state, thus causing the thermally conductive coupling of the temperature sensor 13 to the stator winding 8. The fastening clamp 14 has a latching connection, with the aid of which it is held closed.

[0030] It would also be conceivable for the mounting clamp 14 to be mounted directly onto the stator winding 8, thereby also establishing the thermally conductive coupling of the temperature sensor 13 with the stator winding 8. A separate heat-conducting element 16 can then be omitted.

[0031] At this point it is noted that the machine housing 2 can also be constructed differently and contain more or fewer parts than in the Fig. 1. For example, the stator housing 3 could be pot-shaped and the front bearing plate 4 could be omitted. Accordingly, the first housing part 3 and the second housing part 5 could also have a different shape.

[0032] The Fig. 2 now shows a somewhat more detailed embodiment of a stator 6a in an oblique view. The stator 6a, in turn, has a stator core 7a and a stator winding 8a arranged therein. In this case, ends 17 of individual sections of the stator winding 8a are electrically connected to a connector 18, wherein the connector 18 extends in a ring-shaped or arc-shaped manner around the stator axis A of the stator 6a. For example, the stator winding 8a can be constructed with "U-pins" in this case. A heat-conducting element or extension 16a, against which the temperature sensor 13 rests, is connected to the connector 18 or encompassed by it.

[0033] The temperature sensor 13 is in the Fig. 2 is covered by the fastening clamp 14a, which is located in the Fig. 2 is not yet mounted on the extension 16a. Both the connector 18 and its extension 16a are thermally conductive intermediate parts in this case. The thermally conductive connection between the stator winding 8a and the temperature sensor 13 is therefore "indirect" in this case. In addition, the Fig. 2 also includes terminals 19, with which the stator winding 8a can be electrically connected to connecting cables of the electrical machine 1 (not shown). In particular, the connector 18 can form an electrical star point of the electrical machine 1.

[0034] The Fig. 3 to 7 now show an example of a fastening clamp 14b in different states and in different views.

[0035] Fig. 3 shows the fastening clamp 14b in the unassembled state in an oblique view, Fig. 4 with inserted temperature sensor 13a, Fig. 5 with additionally inserted heat conducting element 16a, Fig. 6 in closed position and Fig. 7 in open state in side view.

[0036] In this exemplary embodiment, the fastening clamp 14b is constructed in one piece and has an upper part 20 and a lower part 21, which are connected to one another via a joint 22 and can therefore be pivoted relative to one another. In this example, the fastening clamp 14b is constructed from a plastic (in particular, polyphenylene sulfide), with the joint 22 formed by a narrow plastic web. However, the joint 22 could also be constructed differently. Furthermore, the fastening clamp 14b could also be made of a different material.

[0037] The fastening clamp 14b has two side flaps 23 on its upper part 20, each with recesses 24 arranged therein. Two locking lugs 25 are arranged on the lower part, which interact with the side flaps 23 and the recesses 24 when the fastening clamp 14b is closed (see in particular Fig. 6). The lower part 21 also includes a support surface 26 for the temperature sensor 13a and a guide 27 for the heat-conducting element 16b. A downwardly directed elevation 28 is also provided on the upper part 20. Finally, an opening B for the cable 15 is located in the rear part of the mounting bracket 14b.

[0038] In the Fig. 4, the temperature sensor 13a is already inserted into the mounting bracket 14b and rests on the support surface 26. The cable 15 is routed through the opening B. The temperature sensor 13a can rest loosely on the support surface 26 or be attached to it, for example, glued. It would also be conceivable for the temperature sensor 13a to be arranged in a recess of the mounting bracket 14b and, in particular, to be attached thereto.

[0039] In the Fig. 5, the heat-conducting element 16a is also inserted into the mounting bracket 14b. Specifically, it rests on the temperature sensor 13a and is laterally secured by the guide 27. The heat-conducting element 16a has a recess 29 into which the raised portion 28 projects when the mounting bracket 14b is closed, axially securing the heat-conducting element 16a against slipping out of the mounting bracket 14b.

[0040] For example, the recess 29 in the heat-conducting element 16a can be created with a chisel or punch. Advantageously, the area of ​​any resulting material upset is free of the fastening clamp 14b to prevent any negative influence on the contact pressure. Specifically, the elevation 28 in this example is arranged outside the area of ​​the side tabs 23. For the axial securing of the heat-conducting element 16a, it would also be conceivable for the fastening clamp 14b to have a recess into which a projection of the heat-conducting element 16a projects. It is of course also conceivable for the elevation 28 and the recess 29 to be arranged at a different location than shown.

[0041] The axial securing of the temperature sensor 13a can be achieved by the opening B being smaller than an extension of the temperature sensor 13a measured transversely to the longitudinal extension of the cable 15, as can be seen in particular from Fig. 4. It would also be conceivable that the axial securing of the temperature sensor 13a is achieved by a shrink tube mounted on the temperature sensor 13a and / or on the cable 15, the extent of which, measured transversely to the longitudinal extent of the cable 15, is greater than the opening B.

[0042] Due to the locking connection 30, which in this example is formed by the locking lugs 25 and the side tabs 23, as well as the elasticity of the material selected for the fastening clamp 14b and a deformation present in the closed state of the fastening clamp 14b, a contact force F is generated by the fastening clamp 14b, which presses the temperature sensor 13a against the heat-conducting element 16a and thus effects the thermally conductive coupling of the temperature sensor 13a with the stator winding 8, 8a. The contact force F generated by the fastening clamp 14b is advantageously in a range of 10 N ≤ F ≤ 40 N. This ensures good heat transfer to the temperature sensor 13a, even during the vibrations that occur during operation of the electrical machine 1. In addition, the temperature sensor 13a is not excessively stressed, and the fastening clamp 14b can be easily closed by hand.The specified contact force F refers specifically to the new condition of the fastening clamp 14b. Over time, this contact force F may decrease due to settlement and material creep.

[0043] It is also conceivable that an elastic element (not shown) is arranged between the temperature sensor 13a and the fastening clamp 14b and / or between the heat-conducting element 16a and the fastening clamp 14b, which elastic element optionally reinforces the thermally conductive coupling of the temperature sensor 13a with the heat-conducting element 16a. The elastic element can be made of silicone, for example, and serves to better compensate for manufacturing tolerances. A shrink tube, which encloses at least part of the temperature sensor 13a, can also reinforce a thermally conductive coupling of the temperature sensor 13a with the heat-conducting element 16a due to its elasticity and can therefore also assume the function of such an elastic element.

[0044] The Fig. 7 also shows a retaining tab 31, which secures the temperature sensor 13a at least at one end against falling out, which is particularly advantageous when the temperature sensor 13a is simply loosely inserted into the mounting bracket 14b. In particular, in conjunction with the retaining effect of the cable 15 guided through the opening B and any axial securing, for example, by a shrink tube, a relatively secure fixation of the temperature sensor 13a in the mounting bracket 14b results, so that it can be attached reliably.

[0045] In the examples shown, the mounting clamp 14, 14a, 14b was mounted in the area of ​​a (separate) heat-conducting element 16, 16a. Alternatively, it would also be conceivable for the mounting clamp 14, 14a, 14b to be mounted directly onto the stator winding 8, 8a. For example, the stator winding 8, 8a can then be passed through a larger opening B. If the mounting clamp 14, 14a, 14b is mounted onto the stator winding 8, 8a, a heat-conducting element 16, 16a can be omitted.

[0046] It is also conceivable that the fastening clamp 14b is not, as in the Fig. 3 to 7, is constructed in one piece, but in two parts. The joint 22 can then be omitted, and the upper part 21 and the lower part 21 are then available as separate components. This may simplify assembly, particularly if the stator winding 8, 8a is to be passed through the fastening clamp 14b.

[0047] In summary, a method for producing a thermally conductive coupling of a temperature sensor 13, 13a with a stator winding 8, 8a or a heat-conducting element 16, 16a of an electrical machine 1 thermally conductively connected thereto may comprise the following steps: - Arranging the temperature sensor 13, 13a and the stator winding 8, 8a or the heat conducting element 16, 16a in a fastening clamp 14, 14a, 14b and - Establishing the thermally conductive coupling of the temperature sensor 13, 13a with the stator winding 8, 8a or the heat-conducting element 16, 16a by closing the fastening clamp 14, 14a, 14b, wherein a snap-in connection 30 of the fastening clamp 14, 14a, 14b snaps into place and wherein the fastening clamp 14, 14a, 14b presses the temperature sensor 13, 13a against the stator winding 8, 8a or the heat-conducting element 16, 16a.

[0048] The fastening clamps 14, 14a, 14b can generally be designed to be detachable or non-detachable. Fig. The fastening clip 14b shown in Figures 3 to 7 is detachable—assuming sufficient elasticity of the material of the fastening clip 14b. To release it, the side tabs 23 are bent slightly to the side to release the snap-in connection 30. This allows for easy replacement of the temperature sensor 13a. However, it is also conceivable that the fastening clip 14, 14a, 14b cannot be opened again without causing damage after it has been closed due to a corresponding design of the snap-in connection 30, and thus the thermal coupling between the temperature sensor 13a and the stator winding 8, 8a cannot be opened or cannot be opened without causing damage, for example, if this is not intended or necessary after the electrical machine 1 has been put into operation.

[0049] The Fig.Finally, Figure 8 shows the electric machine 1 installed in a vehicle 32. The vehicle 32 has two axles, one of which is driven. Specifically, the electric machine 1 is connected to the semi-axles 34 of the rear axle via an optional transmission 33. Finally, the driven wheels 35 are mounted on the semi-axles 34. The vehicle 32 is driven at least partially or temporarily by the electric machine 1. This means that the electric machine 1 can serve to drive the vehicle 32 alone or, for example, be provided in conjunction with an internal combustion engine (hybrid drive).

[0050] Finally, it is noted that the scope of protection is determined by the patent claims. However, the description and the drawings must be used to interpret the claims. The features contained in the figures can be interchanged and combined with one another as desired. In particular, it is also noted that the devices shown may in reality comprise more or fewer components than shown. In some cases, the devices shown or their components may also be shown not to scale and / or enlarged and / or reduced in size. List of reference symbols 1 electric machine 2 machine housings 3 Stator housing 4 front bearing shield 5 rear bearing plate 6, 6a Stator 7, 7a Stator laminated core 8, 8a Stator winding 9 Rotor shaft 10 Rotor 11 Rotor lamination stack 12a, 12b (rolling) bearings 13, 13a Temperature sensor 14, 14a, 14b fastening clip 15 (sensor) cables 16, 16a Heat conducting element / extension 17 End of section stator winding 18 connectors 19 Stator winding connection 20 upper part fastening clamp 21 Lower part fastening clamp 22 joint 23 side flap 24 recess side flap 25 locking lug 26 Support surface for temperature sensor 27 Guide for heat conducting element 28 Raised mounting bracket 29 Recess heat conducting element 30 snap-in connection 31 retaining tongue 32 vehicles 33 gearboxes 34 semi-axle 35 wheels A Stator axis / rotor axis B Opening for (sensor) cable F contact force

Claims

[1] Electrical machine (1), comprising - a stator (6, 6a) which has a stator laminated core (7, 7a) with a plurality of axially stacked stator laminates and a stator winding (8, 8a) arranged in the stator laminated core (7, 7a), - a temperature sensor (13, 13a) which is thermally conductively coupled to the stator winding (8, 8a) and is arranged to measure a temperature of the stator winding (8, 8a), characterized by , that - the thermally conductive coupling of the temperature sensor (13, 13a) to the stator winding (8, 8a) is effected by a fastening clamp (14, 14a, 14b) with a snap-in connection (30), and the fastening clamp (14, 14a, 14b) presses the temperature sensor (13, 13a) against the stator winding (8, 8a) or a heat-conducting element (16, 16a) thermally conductively connected to the stator winding (8, 8a). [2] Electrical machine (1) according to claim 1, characterized by , that - ends (17) of individual sections of the stator winding (8, 8a) are electrically connected to a connector (18) which extends in a ring-shaped or arc-shaped manner around a stator axis (A) of the stator (6, 6a), and - the heat-conducting element (16, 16a) is formed by or encompassed by this connector (18). [3] Electrical machine (1) according to claim 2, characterized by that the heat-conducting element (16, 16a) has an extension to which the fastening clamp (14, 14a, 14b) is fastened. [4] Electrical machine (1) according to one of the preceding claims, characterized by that a contact force (F) generated by the fastening clamp (14, 14a, 14b) lies in a range of 10 N ≤ F ≤ 40 N. [5] Electrical machine (1) according to one of the preceding claims, characterized bythat the fastening clamp (14, 14a, 14b) has an elevation (28) which projects into a recess (29) in the stator winding (8, 8a) or the heat-conducting element (16, 16a) or the fastening clamp (14, 14a, 14b) has a recess into which an elevation of the stator winding (8, 8a) or the heat-conducting element (16, 16a) projects. [6] Electrical machine (1) according to one of the preceding claims, characterized by that the fastening clamp (14, 14a, 14b) has a guide (27) for the heat-conducting element (16, 16a). [7] Electrical machine (1) according to one of the preceding claims, characterized by that the temperature sensor (13, 13a) a) is arranged loosely in a recess of the fastening clamp (14, 14a, 14b) or b) is fastened to the fastening clamp (14, 14a, 14b). [8] Electrical machine (1) according to one of the preceding claims, characterized bythat a cable (15) of the temperature sensor (13, 13a) is guided through an opening (B) in the fastening clamp (14, 14a, 14b), wherein the opening (B) is smaller than an extension of the temperature sensor (13, 13a) or of a shrink tube mounted on the cable (15) measured transversely to the longitudinal extension of the cable (15). [9] Electrical machine (1) according to one of the preceding claims, characterized by , that - between the temperature sensor (13, 13a) and the fastening clamp (14, 14a, 14b) and / or - an elastic element is arranged between the stator winding (8, 8a) or the heat-conducting element (16, 16a) and the fastening clamp (14, 14a, 14b). [10] Electrical machine (1) according to one of the preceding claims, characterized by that the fastening clamp (14, 14a, 14b) i) is constructed in several pieces or ii) in one piece. [11] Electrical machine (1) according to one of the preceding claims, characterized bythat two parts (20, 21) of the fastening clamp (14, 14a, 14b) which can be pivoted relative to one another are connected to one another via a joint (22). [12] Electrical machine (1) according to one of the preceding claims, characterized by that the fastening clamp (14, 14a, 14b) comprises plastic, in particular polyphenylene sulfide. [13] Vehicle (32) with an electric machine (1) according to one of claims 1 to 12, which is provided for driving the vehicle (32). [14] Method for producing a thermally conductive coupling of a temperature sensor (13, 13a) with a stator winding (8, 8a) or a heat-conducting element (16, 16a) thermally conductively connected to a stator winding (8, 8a) of an electrical machine (1), in particular an electrical machine (1) according to one of claims 1 to 12, comprising the steps - arranging the temperature sensor (13, 13a) and the stator winding (8, 8a) or the heat conducting element (16, 16a) in a fastening clamp (14, 14a, 14b) and - Establishing the thermally conductive coupling of the temperature sensor (13, 13a) with the stator winding (8, 8a) or the heat-conducting element (16, 16a) by closing the fastening clamp (14, 14a, 14b), wherein a latching connection (30) of the fastening clamp (14, 14a, 14b) engages and the fastening clamp (14, 14a, 14b) presses the temperature sensor (13, 13a) against the stator winding (8, 8a) or the heat-conducting element (16, 16a).

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