Support, stator, motor and vehicle

Abstract

The utility model provides a support, a stator, a motor and a vehicle, the support comprises a support mounting part and a sensor mounting part, and the sensor mounting part is provided with an accommodating part for accommodating a temperature sensor. The part, accommodating the temperature sensor, of the sensor mounting part can extend into a middle space formed by two layers of winding end parts of the stator winding; the support mounting part is arranged on the sensor mounting part, a fixing part is arranged on the support mounting part, the fixing part can be fixed on the winding end part, and when the fixing part is fixed on the winding end part, the sensor mounting part enables the temperature sensor accommodated in the sensor mounting part to abut against the winding surface of the stator winding.

Description

Technical Field

[0001] The present application relates to the technical field of temperature sensor arrangement of stator windings, and in particular, to a bracket, a stator, a motor and a vehicle. Background Art

[0002] As the power density of motors increases significantly, the thermal monitoring of motors must be addressed to ensure their reliability. This is because the increase in temperature may cause the insulation performance of the stator winding to deteriorate or burn out. In addition, the motor's rotor may also be demagnetized after being exposed to high temperatures, which will affect its service life.

[0003] For the motor stator winding, a temperature sensor is generally used for thermal monitoring. Usually, the temperature sensor can be fixed on the stator winding through an external fixing. In order to facilitate the fixation of the temperature sensor, a busbar or a three-phase outgoing line is generally used to assist the installation and fixation of the temperature sensor, or the temperature sensor is directly tied to the end of the winding for dripping paint and fixing. However, for the commonly used stator winding, its highest temperature point is not necessarily at the busbar or the three-phase outgoing line; it is difficult to accurately fix the position of the temperature sensor by directly tying the temperature sensor to the end of the winding at the highest temperature point.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] One aspect of the present application aims to solve a technical problem of how to better fix the temperature sensor at the highest temperature point of the stator winding.

[0006] In addition, other aspects of the present application are also intended to solve or alleviate other technical problems existing in the prior art.

[0007] The present application provides a bracket, a stator, a motor and a vehicle. Specifically, according to one aspect of the present application, the present application provides:

[0008] A bracket for a temperature sensor of a stator winding, wherein the bracket comprises a bracket mounting portion and a sensor mounting portion,

[0009] The sensor mounting portion is provided with an accommodating portion for accommodating the temperature sensor, and the portion of the sensor mounting portion accommodating the temperature sensor can extend into the middle space formed by the two-layer winding ends of the stator winding;

[0010] The bracket mounting portion is arranged on the sensor mounting portion, and a fixing portion is arranged on the bracket mounting portion, which can be fixed on the winding end, and when it is fixed on the winding end, the sensor mounting portion presses the temperature sensor accommodated therein against the winding surface of the stator winding.

[0011] Optionally, according to an embodiment of the present application, the accommodation portion is configured as an elongated groove, and the depth of the groove is smaller than the thickness of the temperature sensor accommodated therein along the depth direction.

[0012] Optionally, according to an embodiment of the present application, the parts of the bracket mounting portion and the sensor mounting portion accommodated in the intermediate space are constructed to match the shape of the intermediate space, so that the temperature sensor can penetrate into the intermediate space.

[0013] Optionally, according to an embodiment of the present application, a first opening is provided at a portion of the accommodating portion that is not in contact with the temperature sensor, and when the temperature sensor is installed in the accommodating portion, its wiring harness passes through the first opening.

[0014] Optionally, according to an embodiment of the present application, a second opening is provided at a portion of the accommodation portion that is not in contact with the temperature sensor, for dripping paint.

[0015] Optionally, according to an embodiment of the present application, a slot for a tying rope is configured on the edge of the bracket mounting portion.

[0016] Optionally, according to an embodiment of the present application, the fixing portion is configured as a hook protruding from the bracket mounting portion, which can be engaged with one of the two layers of winding ends.

[0017] According to another aspect of the present application, the present application provides a stator, wherein the stator comprises

[0018] stator core;

[0019] A stator winding, wherein the stator winding is mounted on the stator core, and the highest temperature point of the stator winding during operation is at the winding end of one layer of the winding;

[0020] A bracket and a temperature sensor, wherein the bracket comprises a bracket mounting portion and a sensor mounting portion;

[0021] The sensor mounting portion is provided with an accommodating portion for accommodating the temperature sensor, and the portion of the sensor mounting portion accommodating the temperature sensor extends into the middle space formed by the ends of the two layers of windings of the stator winding;

[0022] The bracket mounting portion is arranged on the sensor mounting portion, and a fixing portion is arranged on the bracket mounting portion, which is fixed on the winding end, and when it is fixed on the winding end, the sensor mounting portion will press the temperature sensor accommodated therein against the winding surface at the highest temperature point of the stator winding.

[0023] According to a third aspect of the present application, the present application provides an electric motor, which includes the stator described above.

[0024] According to a fourth aspect of the present application, the present application provides a vehicle, wherein the vehicle includes the motor described above.

[0025] Benefits of this application include:

[0026] 1. The bracket of the present application can accurately fix the temperature sensor at the highest temperature point of the stator winding, especially in the middle space formed by the winding end of the variable pitch W-pin flat wire winding, so that the temperature sensor can more accurately measure the highest temperature of the stator winding;

[0027] 2. The bracket of the present application can make the temperature sensor penetrate into the intermediate space, rather than being exposed to the outside of the winding, through the shape matching of the intermediate space between the bracket mounting part and the sensor mounting part and the winding end, so as to further ensure the accuracy of temperature measurement by the temperature sensor, and the temperature sensor is pressed against the winding surface by the fixing part, which ensures that the bracket is fixed and the temperature sensor is in good contact with the winding surface;

[0028] 3. The bracket of the present application is fixed on the winding end by means of snapping and binding, so that the temperature sensor can be accurately positioned and is more difficult to move at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] With reference to the accompanying drawings, the above and other features of the present application will become apparent. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the figures are used to represent similar components, among which,

[0030] Figure 1 A schematic diagram of the structure of a bracket proposed according to an embodiment of one aspect of the present application is shown;

[0031] Figure 2 A schematic diagram showing a bracket arranged in a stator winding according to an embodiment of an aspect of the present application;

[0032] Figure 3 FIG. 1 is a schematic diagram showing a bracket provided in an embodiment according to an aspect of the present application when arranged in a stator winding when viewed from another direction. DETAILED DESCRIPTION

[0033] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the present application.

[0034] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", "third", etc. or similar expressions are only used for description and distinction purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components or the order or assembly order of the components.

[0035] refer to Figure 1 , 2 and 3, which respectively show a schematic diagram of the structure of a bracket 100 proposed according to an embodiment of one aspect of the present application and a schematic diagram of the bracket when arranged in the stator winding viewed from two directions. The bracket 100 is used to fix the temperature sensor 200 at the highest temperature point of the stator winding 300, especially to fix the temperature sensor 200 in the middle space formed by the ends of the two layers of windings at the highest temperature point of the stator winding 300. In the variable pitch W-pin flat wire stator winding, due to the staggered arrangement of the winding ends, a hollow middle space is formed between the winding ends. Arranging the temperature sensor 200 in the middle space can ensure its more secure fixation and precise positioning. Figure 1 In an embodiment, the bracket includes a bracket mounting portion 1 and a sensor mounting portion 2, and the bracket mounting portion 1 is arranged on the sensor mounting portion 2. An accommodating portion 21 is arranged on the sensor mounting portion 2 to accommodate the temperature sensor 200, and the portion of the sensor mounting portion 2 accommodating the temperature sensor 200 can extend into the middle space formed by the two-layer winding ends of the stator winding 300. In an optional case, the sensor mounting portion 2 is arranged to have a structure with two ends, especially a rectangular structure, and the temperature sensor 200 is arranged near one end thereof (at Figure 1 It should be understood that when the temperature sensor 200 is accommodated in the accommodating portion 21, at least one surface thereof is not blocked by the accommodating portion 21, so that the surface can be in contact with the surface of the winding, or the surface of the shaped conductor of the winding.

[0036] exist Figure 1 In the embodiment, the bracket mounting part 1 is arranged on the sensor mounting part 2, and a fixing part 11 is arranged on the bracket mounting part 1, which can be fixed on the winding end, and when it is fixed on the winding end, the sensor mounting part 2 presses the temperature sensor 200 accommodated therein against the winding surface of the stator winding 300. In an optional case, the bracket mounting part 1 is arranged close to one end of the sensor mounting part 2, especially close to the end of the sensor mounting part 2 extending into the middle space formed by the two layers of winding ends.

[0037] In an optional case, the parts of the bracket mounting part 1 and the sensor mounting part 2 accommodated in the intermediate space are configured to match the shape of the intermediate space, so that the temperature sensor 200 can be inserted as deep into the intermediate space as possible. In order to accurately measure the temperature of the stator winding 300, the best way is to make the temperature measuring surface of the temperature sensor 200 fit the winding surface as much as possible, which requires the temperature sensor 200 to extend as far as possible into the intermediate space formed by the winding end. Figure 1 In an embodiment, the bracket mounting portion 1 is configured to be a triangular shape that matches the shape of the intermediate space, and is arranged close to one end of the rectangular sensor mounting portion 2 (the temperature sensor 200 is accommodated in the accommodating portion of the sensor mounting portion 2 away from the end), and in an optional case, a cutting portion or a cutout 22 is configured on the end of the sensor mounting portion 2, and the cutting portion or the cutout 22 matches the shape of the intermediate space. Figure 1 In the embodiment, one corner of the rectangular sensor mounting portion 2 is cut off to form an inclined cut. As a result, the bracket mounting portion 1 and the end of the sensor mounting portion 2 can be better extended into the intermediate space, so that one end of the temperature sensor 200 can be immersed in the intermediate space. It should be understood that the shape of the bracket mounting portion 1 and the shape of the cut portion or cutout 22 of the sensor mounting portion 2 can be constructed differently from the above-mentioned shapes according to the actual shape of the winding intermediate space where the bracket 100 is arranged, which does not deviate from the scope of the present application.

[0038] In one embodiment of one aspect of the present application, the accommodating portion 21 is configured as a long strip-shaped groove, and the depth of the groove is less than the thickness of the temperature sensor 200 accommodated therein in the direction of the groove depth. This arrangement of the accommodating portion 21 ensures that the temperature measuring surface of the temperature sensor 200 actually protrudes from the accommodating portion 21 and can be placed against the winding surface without being hindered by the accommodating portion 21, so as to accurately measure the temperature. In this embodiment, the groove is, for example, configured in the form of a slideway, which extends through the entire length of the sensor mounting portion 2, and the temperature sensor 200 can be inserted into the groove from one end of the sensor mounting portion 2 and slide to the position where it needs to be arranged. This method ensures that the temperature sensor 200 can easily adjust its position in the accommodating portion 21. For example, a structural feature for positioning, such as a stopper, etc., can also be configured in the groove for accurate positioning of the temperature sensor 200 therein. It should be understood that the accommodating portion 21 can also be configured in the form of a clamping portion, and the temperature sensor 200 is clamped in the clamping portion for fixing.

[0039] In one embodiment of one aspect of the present application, a first opening 23 is provided at a portion of the accommodating portion 21 that is not in contact with the temperature sensor 200, and when the temperature sensor 200 is installed in the accommodating portion 21, its wiring harness passes through the first opening 23. In an optional case, the first opening 23 is particularly provided at the end of the sensor mounting portion 2 that is not fully accommodated in the above-mentioned intermediate space. The first opening 23 not only provides a passage for the wiring harness of the temperature sensor 200 so that its wiring harness can be arranged through the first opening 23, but also allows the wiring harness to contact the bracket 100, and plays a role in further fixing the bracket 100 at the end of the winding when the wiring harness is tightened. It should be understood that, in an optional case, the first opening 23, for example, can also be arranged on the bracket mounting portion 1.

[0040] In one embodiment of one aspect of the present application, a second opening 24 is provided at a portion of the accommodating portion 21 that is not in contact with the temperature sensor 200 for dripping paint. The second opening 24 is provided, for example, near the arrangement position of the temperature sensor 200, and provides a paint entry space when dripping paint. By dripping paint, not only can the insulation between the winding forming wires be ensured, but also the bracket 100 and the winding end can be better fixed by the viscosity of the insulating paint.

[0041] In one embodiment of the present application, a slot 12 for a tying rope is configured on the edge of the bracket mounting portion 1 for fixing the tying rope, so as to better fix the position of the bracket 100 on the stator winding 300 through the tying rope. Figure 1In the embodiment, two card slots 12 are configured on the bracket mounting portion 1. However, it should be understood that other numbers of card slots may be configured according to actual application conditions, and the card slots 12 may also be configured on the sensor mounting portion 2 or on both the sensor mounting portion 2 and the bracket mounting portion 1.

[0042] In one embodiment of one aspect of the present application, the fixing portion 11 is configured as a hook protruding from the bracket mounting portion 1, which can be engaged with one of the two layers of winding ends. In an optional case, the hook and the temperature sensor 200 are arranged on the same side of the bracket 100, so that when the hook is engaged with the winding end, it simultaneously enables the sensor mounting portion 2 to apply a force toward the winding end to the temperature sensor 200, so that the temperature sensor 200 can be against the winding end. In an optional case, the projection area of ​​the hook on the bracket mounting portion 1 is configured as a through hole 13 to facilitate the reverse molding of the hook when manufacturing the bracket mounting portion 1. In addition, a plurality of, for example, two, material-reducing recessed portions 14 are configured around the hook on the bracket mounting portion 1 to reduce the material consumed when manufacturing the bracket mounting portion 1. It should be understood that the fixing portion 11 can also be configured as a clamping member or an adhesive member, for example, which is clamped to the winding end or adhered to the winding end.

[0043] Another aspect of the present application provides a stator, which includes

[0044] stator core;

[0045] The stator winding 300 is installed on the stator core, and the highest temperature point of the stator winding 300 during operation is at the winding end of one layer of the winding;

[0046] The bracket 100 and the temperature sensor 200, the bracket 100 comprises a bracket mounting portion 1 and a sensor mounting portion 2;

[0047] The sensor mounting portion 2 is provided with a receiving portion 21 for receiving the temperature sensor 200. The portion of the sensor mounting portion 2 receiving the temperature sensor 200 extends into the middle space formed by the two-layer winding ends of the stator winding 300.

[0048] The bracket mounting portion 1 is arranged on the sensor mounting portion 2, and a fixing portion 11 is arranged on the bracket mounting portion 1, which is fixed on the winding end, and when it is fixed on the winding end, the sensor mounting portion 2 will press the temperature sensor 200 accommodated therein against the winding surface at the highest temperature point of the stator winding 300.

[0049] In another embodiment of the present application, the stator winding 300 is a flat-wire wave winding, especially a flat-wire wave winding with a variable pitch shaped wire. Due to the structural form of this winding and the arrangement of the oil injection cooling path of the winding, its highest temperature point is generally not at the bus or three-phase outlet, but generally at a certain stator end. The temperature sensor 200 can be fixed at the highest temperature point of this stator winding 300 through the above-mentioned bracket 100, especially using the staggered intermediate space formed by the winding ends of the stator winding 300, so that the bracket 100 can be accurately and shape-matched fixed in the intermediate space, so that the temperature sensor 200 can extend into the intermediate space to better fit the winding surface.

[0050] The third aspect of the present application further provides a motor, which includes the above-mentioned stator. The motor of the present application has all the technical effects of the above-mentioned stator, which will not be described in detail here.

[0051] The fourth aspect of the present application further provides a vehicle, which includes the above motor. The vehicle of the present application has all the technical effects of the above bracket, which will not be described in detail here.

[0052] It should be understood that the motor of the present application can be installed on various vehicles, including cars, trucks, buses, hybrid vehicles, pure electric vehicles, etc. Therefore, the subject matter of the present application is also intended to protect various vehicles equipped with the motor of the present application.

[0053] It should be understood that all the above preferred embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present application should be within the legal protection scope of the present application.

[0054] The relevant user personal information that may be involved in the various embodiments of this application is strictly in accordance with the requirements of laws and regulations, following the principles of legality, legitimacy and necessity, based on the reasonable purposes of business scenarios, to process the personal information that users actively provide during the use of products / services or generated due to the use of products / services, as well as the personal information obtained with the user's authorization.

[0055] The user personal information processed by the applicant will vary depending on the specific product / service scenario, and shall be based on the specific scenario in which the user uses the product / service, which may involve the user's account information, device information, driving information, vehicle information or other related information. The applicant will treat the user's personal information and its processing with a high degree of diligence.

[0056] The Applicant attaches great importance to the security of user personal information and has adopted reasonable and feasible security protection measures that comply with industry standards to protect user information and prevent personal information from being accessed, disclosed, used, modified, damaged or lost without authorization.

Claims

1. A bracket (100) for fixing a temperature sensor (200) of a stator winding (300), characterized in that: The bracket comprises a bracket mounting portion (1) and a sensor mounting portion (2), The sensor mounting portion (2) is provided with a housing portion (21) for housing the temperature sensor (200), and the portion of the sensor mounting portion (2) housing the temperature sensor (200) can extend into the middle space formed by the ends of two layers of windings of the stator winding (300); The bracket mounting portion (1) is arranged on the sensor mounting portion (2), and a fixing portion (11) is arranged on the bracket mounting portion (1), which can be fixed on the winding end, and when it is fixed on the winding end, the sensor mounting portion (2) presses the temperature sensor (200) accommodated therein against the winding surface of the stator winding (300).

2. The bracket (100) according to claim 1, characterized in that: The receiving portion (21) is configured as an elongated groove, the depth of which is smaller than the thickness of the temperature sensor (200) received therein along the depth direction.

3. The bracket (100) according to claim 1, characterized in that: The parts of the bracket mounting part (1) and the sensor mounting part (2) accommodated in the intermediate space are constructed in a shape-matched manner with the intermediate space, so that the temperature sensor (200) can penetrate into the intermediate space.

4. The bracket (100) according to claim 1, characterized in that: A first opening (23) is provided at a portion of the accommodating portion (21) that is not in contact with the temperature sensor (200); when the temperature sensor (200) is installed in the accommodating portion (21), its wiring harness passes through the first opening (23).

5. The bracket (100) according to claim 1, characterized in that: A second opening (24) is provided at a location of the accommodating portion (21) that is not in contact with the temperature sensor (200) for dripping paint.

6. The bracket (100) according to claim 1, characterized in that: A slot (12) for tying a rope is configured on the edge of the bracket mounting portion (1).

7. The bracket (100) according to claim 1, characterized in that: The fixing portion (11) is configured as a hook protruding from the bracket mounting portion (1), and can be engaged with one of the two layers of winding ends.

8. A stator, characterized in that: The stator includes stator core; A stator winding (300), the stator winding (300) being mounted on the stator core, the highest temperature point of the stator winding (300) during operation being located at a winding end of one layer of the winding; A bracket (100) and a temperature sensor (200), wherein the bracket (100) comprises a bracket mounting portion (1) and a sensor mounting portion (2); The sensor mounting portion (2) is provided with a housing portion (21) for housing the temperature sensor (200), and the portion of the sensor mounting portion (2) housing the temperature sensor (200) extends into an intermediate space formed by two layers of winding ends of the stator winding (300); The bracket mounting portion (1) is arranged on the sensor mounting portion (2), and a fixing portion (11) is arranged on the bracket mounting portion (1), which is fixed on the winding end, and when it is fixed on the winding end, the sensor mounting portion (2) presses the temperature sensor (200) accommodated therein against the winding surface at the highest temperature point of the stator winding (300).

9. A motor, characterized in that: Comprising a stator according to claim 8.

10. A vehicle, characterized in that: The vehicle comprises an electric machine according to claim 9.

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