Support, stator, motor, and vehicle

Abstract

A support (100), a stator, a motor, and a vehicle. The support (100) comprises a support mounting portion (1) and a sensor mounting portion (2). An accommodating portion (21) is provided on the sensor mounting portion (2) to accommodate a temperature sensor (200), and the part of the sensor mounting portion (2) accommodating the temperature sensor (200) can extend into an intermediate space formed by two layers of winding end parts of a stator winding (300). The support mounting portion (1) is arranged on the sensor mounting portion (2), a fixing portion (11) is provided on the support mounting portion (1) and can be fixed on the winding end parts, and when the fixing portion (11) is fixed on the winding end parts, the sensor mounting portion (2) presses the temperature sensor (200), which is accommodated in the sensor mounting portion (2), against the winding surface of the stator winding (300).

Description

Brackets, stators, motors and vehicles Technical Field

[0001] The present invention 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 motor power density increases significantly, thermal monitoring becomes crucial to ensure motor reliability. This is because elevated temperatures can degrade or even burn the stator winding insulation. Furthermore, high temperatures can cause demagnetization of the motor's rotor, shortening its service life.

[0003] Temperature sensors are commonly used to monitor the thermal state of motor stator windings. These sensors are typically secured to the stator windings using external fasteners. To facilitate securement, busbars or three-phase outgoing wires are often used to assist with mounting the temperature sensor, or the temperature sensor is directly tied to the winding end and secured with a paint seal. However, the highest temperature point in commonly used stator windings is not necessarily located at the busbar or three-phase outgoing wires. Simply tying the temperature sensor to the winding end at the highest temperature point makes it difficult to precisely secure the temperature sensor.

[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 prior art known to ordinary technicians in this field. Summary of the Invention

[0005] One aspect of the present invention aims to solve the 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 invention are also intended to solve or alleviate other technical problems existing in the prior art.

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

[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 layers of winding ends of the stator winding;

[0010] The bracket mounting portion is arranged on the sensor mounting portion, and a fixing portion is provided on the bracket mounting portion, which can be fixed on the winding end. 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 invention, 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 invention, the parts of the bracket mounting portion and the sensor mounting portion accommodated in the intermediate space are constructed to be in shape matching with the intermediate space, so that the temperature sensor can penetrate into the intermediate space.

[0013] Optionally, according to an embodiment of the present invention, 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, a wiring harness thereof passes through the first opening.

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

[0015] Optionally, according to one embodiment of the present invention, 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 invention, 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 invention, the present invention 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 includes 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 two layers of winding ends of the stator winding;

[0022] The bracket mounting portion is arranged on the sensor mounting portion, and a fixing portion is provided on the bracket mounting portion, which is fixed to the winding end. When the bracket mounting portion is fixed to the winding end, the sensor mounting portion presses 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 invention, the present invention provides a motor, comprising the stator described above.

[0024] According to a fourth aspect of the present invention, the present invention provides a vehicle, wherein the vehicle includes the above-mentioned motor.

[0025] The benefits of the present invention include:

[0026] 1. The bracket of the present invention can accurately fix the temperature sensor at the highest temperature point of the stator winding, especially in the intermediate space formed by the winding ends of the variable-pitch W-pin flat wire winding, thereby enabling the temperature sensor to more accurately measure the maximum temperature of the stator winding;

[0027] 2. The bracket of the present invention, through the shape matching between its bracket mounting portion and the intermediate space between the sensor mounting portion and the winding end, allows the temperature sensor to be deeply embedded in the intermediate space, rather than being exposed outside the winding, further ensuring the accuracy of the temperature sensor's temperature measurement. The fixing portion also presses the temperature sensor against the winding surface, ensuring both the bracket's stability and good contact between the temperature sensor and the winding surface.

[0028] 3. The bracket of the present invention is fixed to 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] The above and other features of the present invention will become apparent with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In addition, similar numbers in the drawings represent similar components, wherein:

[0030] FIG1 is a schematic structural diagram of a bracket according to an embodiment of the present invention;

[0031] FIG2 is a schematic diagram showing a bracket arranged in a stator winding according to an embodiment of an aspect of the present invention;

[0032] FIG3 is a schematic diagram showing a bracket according to an embodiment of an aspect of the present invention 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 invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0034] The terms "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the configurations shown in the accompanying drawings. These are relative concepts and may vary depending on the location or usage of the device. Therefore, these or other directional terms should not be construed as restrictive. Furthermore, the terms "first," "second," "third," and similar expressions are used solely for descriptive and distinguishing purposes and should not be construed as indicating or implying the relative importance of the corresponding components or the order or sequence of their assembly.

[0035] Referring to Figures 1, 2, and 3, schematic diagrams of a bracket 100 according to one embodiment of one aspect of the present invention and schematic diagrams of the bracket arranged in a stator winding, viewed from two directions, are shown. The bracket 100 is used to secure a temperature sensor 200 at the highest temperature point of the stator winding 300, particularly within the intermediate space formed between the ends of two layers of windings at the highest temperature point of the stator winding 300. In a variable-pitch W-pin flat wire stator winding, the staggered arrangement of the winding ends creates a hollow intermediate space between the winding ends. Placing the temperature sensor 200 within this intermediate space ensures a more secure fixation and precise positioning. In the embodiment of Figure 1, the bracket includes a bracket mounting portion 1 and a sensor mounting portion 2, with the bracket mounting portion 1 being disposed on the sensor mounting portion 2. A receiving portion 21 is provided on the sensor mounting portion 2 to accommodate the temperature sensor 200. The portion of the sensor mounting portion 2 housing the temperature sensor 200 can extend into the intermediate space formed between the ends of the two layers of windings of the stator winding 300. In an optional embodiment, the sensor mounting portion 2 is configured as a structure having two ends, particularly a rectangular structure, and the temperature sensor 200 is disposed near one end thereof (in the embodiment of FIG1 , near the end distal to the bracket mounting portion 1 ). It should be understood that when the temperature sensor 200 is accommodated in the accommodating portion 21 , at least one surface of the temperature sensor 200 is not obstructed by the accommodating portion 21 , so that the surface can be in contact with the surface of the winding, or in other words, the surface of the shaped conductor of the winding.

[0036] In the embodiment of FIG1 , bracket mounting portion 1 is disposed on sensor mounting portion 2. Bracket mounting portion 1 is provided with a fixing portion 11 capable of being fixed to a winding end. When fixed to the winding end, sensor mounting portion 2 places temperature sensor 200 housed therein against the winding surface of stator winding 300. Optionally, bracket mounting portion 1 is disposed near one end of sensor mounting portion 2, particularly near the end where sensor mounting portion 2 extends into the intermediate space formed between two layers of winding ends.

[0037] Optionally, the portions of the bracket mounting portion 1 and the sensor mounting portion 2 accommodated in the intermediate space are configured to match the shape of the intermediate space, allowing the temperature sensor 200 to extend as deeply into the intermediate space as possible. In order to accurately measure the temperature of the stator winding 300, it is best to ensure that the temperature measuring surface of the temperature sensor 200 is in contact with the winding surface as much as possible. This requires that the temperature sensor 200 extend as far as possible into the intermediate space formed by the winding ends. Referring to the embodiment of FIG1 , the bracket mounting portion 1 is configured to have a triangular shape that matches the shape of the intermediate space. It is arranged near 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 this end). Optionally, a cutting portion or notch 22 is configured on this end of the sensor mounting portion 2. The cutting portion or notch 22 matches the shape of the intermediate space. In the embodiment of FIG1 , the cutting portion or notch 22 is particularly configured to cut off a corner of the rectangular sensor mounting portion 2 to form an inclined notch. As a result, the end of the bracket mounting portion 1 and the sensor mounting portion 2 can better extend into the intermediate space, thereby allowing one end of the temperature sensor 200 to be immersed in the intermediate space. It should be understood that the shape of the bracket mounting portion 1 and the shape of the cutout or notch 22 of the sensor mounting portion 2 can be configured differently from the above-described shapes, depending on the actual shape of the intermediate space of the winding where the bracket 100 is arranged, without departing from the scope of the present invention.

[0038] In one embodiment of one aspect of the present invention, the accommodating portion 21 is configured as an elongated groove, the depth of which is less than the thickness of the temperature sensor 200 accommodated therein, along the depth of the groove. This arrangement of the accommodating portion 21 ensures that the temperature measuring surface of the temperature sensor 200 effectively protrudes from the accommodating portion 21 and can rest against the winding surface without obstruction by the accommodating portion 21, enabling accurate temperature measurement. In this embodiment, the groove is configured, for example, as a slideway extending the entire length of the sensor mounting portion 2. The temperature sensor 200 can be inserted into the groove from one end of the sensor mounting portion 2 and slid into its desired position. This arrangement ensures that the temperature sensor 200 can be easily adjusted within the accommodating portion 21. For example, the groove may also include positioning features, such as stops, to ensure precise positioning of the temperature sensor 200 therein. It should be understood that the accommodating portion 21 may also be configured, for example, as a clamping portion, into which the temperature sensor 200 is clamped for securement.

[0039] In one embodiment of one aspect of the present invention, 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. Optionally, the first opening 23 is particularly provided at the end of the sensor mounting portion 2 that is not fully accommodated in the aforementioned intermediate space. The first opening 23 not only provides a passage for the wiring harness of the temperature sensor 200, allowing its wiring harness to be arranged through the first opening 23, but also allows the wiring harness to contact the bracket 100 and further secure the bracket 100 at the winding end when the wiring harness is tightened. It should be understood that, in an optional embodiment, the first opening 23 may also be provided on the bracket mounting portion 1, for example.

[0040] In one embodiment of one aspect of the present invention, a second opening 24 is provided in a portion of the housing 21 that is not in contact with the temperature sensor 200 for dripping paint. Second opening 24, for example, is located near the location of the temperature sensor 200 and provides space for paint to be dripped. This dripping not only ensures insulation between the winding wires but also better secures the bracket 100 to the winding end using the adhesive properties of the insulating paint.

[0041] In one embodiment of one aspect of the present invention, a slot 12 for a lashing rope is configured on the edge of the bracket mounting portion 1 to secure the lashing rope, thereby better securing the bracket 100 on the stator winding 300. In the embodiment of FIG1 , two slots 12 are configured on the bracket mounting portion 1. However, it should be understood that other numbers of slots may be configured depending on the actual application. The 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 invention, the fixing portion 11 is configured as a hook protruding from the bracket mounting portion 1, capable of snapping onto one of the two layers of winding ends. Optionally, the hook and the temperature sensor 200 are arranged on the same side of the bracket 100. Thus, when the hook snaps onto the winding end, it simultaneously causes the sensor mounting portion 2 to apply a force toward the winding end, forcing the temperature sensor 200 against the winding end. Optionally, the projection of the hook onto the bracket mounting portion 1 is configured as a through-hole 13 to facilitate molding the hook during manufacture of the bracket mounting portion 1. Furthermore, multiple, for example, two, material-reducing recesses 14 are configured around the hook on the bracket mounting portion 1 to reduce material consumption during manufacture of the bracket mounting portion 1. It should be understood that the fixing portion 11 may also be configured as a clamping member or adhesive member, for example, that is clamped onto or adhered to the winding end.

[0043] Another aspect of the present invention provides a stator comprising:

[0044] stator core;

[0045] The stator winding 300 is mounted on the stator core. 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 includes a bracket mounting portion 1 and a sensor mounting portion 2;

[0047] The sensor mounting portion 2 is provided with an accommodating portion 21 for accommodating the temperature sensor 200. The portion of the sensor mounting portion 2 accommodating the temperature sensor 200 extends into the middle space formed by the two layers of 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 provided 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 invention, the stator winding 300 is a flat wave winding, particularly one with variable-pitch profiled conductors. Due to the winding's construction and the arrangement of its oil-spray cooling paths, its highest temperature typically occurs not at the busbar or three-phase outgoing conductors, but rather at one of the stator ends. The bracket 100 allows the temperature sensor 200 to be secured at the highest temperature point of the stator winding 300. This utilizes the staggered intervening spaces formed by the stator winding ends, allowing the bracket 100 to be precisely and form-fittingly secured within these spaces. This allows the temperature sensor 200 to extend into these spaces, ensuring a better fit with the winding surface.

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

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

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

[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 invention should be within the legal protection scope of the present invention.

[0054] The relevant user personal information that may be involved in the various embodiments of the present invention is processed in strict accordance with the requirements of laws and regulations, following the principles of legality, legitimacy and necessity, based on the reasonable purposes of business scenarios, and processing 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 personal information processed by the Applicant will vary depending on the specific product / service scenario and will be based on the specific scenario in which the user uses the product / service. This 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 taken reasonable and feasible security 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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