Motor and vehicle having same

Abstract

A motor and a vehicle having same. The motor comprises a stator body, An oil groove surrounding the periphery of the stator body is formed in the stator body. The stator body is further provided with first oil channels communicated with the oil groove in the axial direction of the stator body, the first oil channels extend to at least one end of the stator body, and the first oil channels are adapted to guide a cooling medium to the end of the stator body. The stator body is further provided with second oil channels communicated with the oil groove in the radial direction of the stator body, and the oil groove is communicated with stator slots by means of the second oil channels.

Description

[0001] This application claims priority to Chinese Patent Application No. 202410698664.3, filed on May 31, 2024, which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of motors, and in particular, to a motor and a vehicle having the motor. BACKGROUND

[0003] During operation, the temperature of a motor rises continuously, and the motor needs to be cooled in time, to avoid affecting the service life of the motor due to excessive temperature. SUMMARY

[0004] The present disclosure aims to solve at least one of the technical problems existing in the related art. In view of this, a motor is provided in some embodiments of the present disclosure. According to the motor in some embodiments of the present disclosure, a stator body is provided with a first oil passage communicating with an oil groove in an axial direction of the stator body, and the first oil passage may guide a cooling medium to ends of the stator body; the stator body is further provided with a second oil passage communicating with the oil groove in a radial direction of the stator body, and the second oil passage communicates the oil groove with stator slots and guides the cooling medium into the stator slots. Therefore, the motor in some embodiments of the present disclosure may cool both end portions of a winding and the winding in the stator slots, thereby improving the heat dissipation effect of the motor.

[0005] A vehicle having the motor described above is further provided in some embodiments of the present disclosure.

[0006] The motor according to some embodiments of the present disclosure includes a stator body. The stator body is provided with stator slots and an oil groove that surrounds an outer periphery of the stator body. The stator body is further provided with at least one first oil passage that communicates with the oil groove in an axial direction of the stator body. The at least one first oil passage extends in the axial direction of the stator body and extends to at least one end of the stator body. The at least one first oil passage is used to guide a cooling medium to the end of the stator body. The stator body is further provided with at least one second oil passage that communicates with the oil groove in a radial direction of the stator body, and the at least one second oil passage communicates the oil groove with the stator slots.

[0007] In the motor according to some embodiments of the present disclosure, the stator body is provided with the first oil passage communicating with the oil groove in the axial direction of the stator body and the second oil passage communicating with the oil groove in the radial direction of the stator body. The first oil passage extends in the axial direction of stator body and extends to two end portions of the winding, and coolant may be sprayed onto the end portions of the winding through the first oil passage, thereby achieving cooling of the end portions of the winding. The second oil passage communicates the oil groove with the stator slots, and the coolant in the oil groove may flow into the stator slots through the second oil passage, thereby achieving cooling of the winding in the stator slots. Therefore, in the motor in some embodiments of the present disclosure, both cooling of the end portions of the winding and cooling of the winding in the stator slots may be achieved by means of the first oil passage and the second oil passage, thereby improving the heat dissipation effect of the motor.

[0008] In some embodiments, the at least one first oil passage includes a plurality of first oil passages. The plurality of first oil passages are configured to be spaced apart from one another in a circumferential direction of the stator body and parallel to each other. The at least one second oil passage includes a plurality of second oil passages. The plurality of second oil passages are configured to be spaced apart from one another in the circumferential direction of the stator body, and axes of the plurality of first oil passages intersect axes of the plurality of second oil passages.

[0009] In some embodiments, the stator body includes a first stator portion and a plurality of second stator portions. First sub-slots are disposed on an inner side of the first stator portion in a radial direction of the first stator portion. The plurality of second stator portions are disposed on two sides of the first stator portion in a thickness direction of the first stator portion, respectively. Any one of the plurality of second stator portions is provided with second sub-slots communicating with the first sub-slots. The first sub-slots and the second sub-slots together constitute the stator slots. Diameters of the second stator portions are greater than a diameter of the first stator portion, and the oil groove is defined between an outer peripheral surface of the first stator portion and two adjacent second stator portions.

[0010] In some embodiments, the first stator portion is provided with first slots extending in the radial direction of the first stator portion. The first slots extend in the radial direction of the first stator portion and are spaced apart from the first sub-slots in the radial direction of the first stator portion. The second stator portion is provided with communication passages that extend in an axial direction of the second stator portion and communicate with the second sub-slots. A communication passage is disposed directly opposite to at least a portion of a first slot in the axial direction of the stator body.

[0011] In some embodiments, the second stator portion includes: a first stator lamination, a second stator lamination, and a third stator lamination. The first stator lamination is provided with the second sub-slots, and first oil spraying holes spaced apart from the second sub-slots are disposed on an outer periphery of the first stator lamination. The second stator lamination is disposed on a side of the first stator lamination proximate to the first stator portion, and the second stator lamination is provided with second oil spraying holes communicating with the first oil spraying holes. The second stator lamination is further provided with the second sub-slots. The third stator lamination is disposed between the second stator lamination and the first stator portion. The third stator lamination is provided with third oil spraying holes communicating the oil groove with the second oil spraying holes. The third stator lamination is further provided with the second sub-slots and fourth oil spraying holes communicating with the second sub-slots. The fourth oil spraying holes are configured as the communication passages and communicate with the first slots. The first oil spraying holes, the second oil spraying holes, and the third oil spraying holes together constitute the first oil passages.

[0012] In some embodiments, diameters of the first oil spraying holes are R1, diameters of the second oil spraying holes are R2, diameters of the third oil spraying holes are R3, R1 is less than R2, and R2 is equal to R3 (i.e., R1 < R2 = R3).

[0013] In some embodiments, the first stator lamination is provided with 2N first oil spraying holes, the second stator lamination is provided with N second oil spraying holes, and the third stator lamination is provided with N third oil spraying holes. Two adjacent first oil spraying holes of the 2N first oil spraying holes have opposite oil spraying directions, and communicate with one of the N second oil spraying holes.

[0014] In some embodiments, the motor further includes a winding and insulating layers. The winding is accommodated in the stator slots. The insulating layers cover an outer surface of the winding, and an oil guide opening is disposed on an outer side of each of the insulating layers in a radial direction of the insulating layer.

[0015] In some embodiments, the insulating layer is disposed around an outer periphery of the winding. A first side edge and a second side edge of the insulating layer are staggered on an outer side of the winding in a radial direction of the winding and arranged at an interval in the radial direction of the stator body, to constitute the oil guide opening.

[0016] The vehicle according to some embodiments of the present disclosure includes the motor described above. Since the vehicle according to some embodiments of the present disclosure is equipped with the motor described above, when the vehicle according to some embodiments of the present disclosure is running, the vehicle has good heat dissipation performance, thereby improving the stability and reliability of the vehicle during operation.

[0017] Additional aspects and advantages of the present disclosure will be set forth in part in the following description, and in part will become apparent from the following description, or be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following accompanying drawings, in which:

[0019] FIG. 1A is a diagram showing a structure of a stator body of a motor, in accordance with some embodiments of the present disclosure;

[0020] FIG. 1B is a perspective view of a stator body of a motor, in accordance with some embodiments of the present disclosure;

[0021] FIG. 2 is a diagram showing a structure of a first stator lamination, in accordance with some embodiments of the present disclosure;

[0022] FIG. 3 is a diagram showing a structure of a first stator portion, in accordance with some embodiments of the present disclosure;

[0023] FIG. 4 is a schematic diagram of temperature of a winding, in accordance with some embodiments of the present disclosure;

[0024] FIG. 5A is a sectional view of a first stator portion, in accordance with some embodiments of the present disclosure;

[0025] FIG. 5B is another sectional view of a first stator portion, in accordance with some embodiments of the present disclosure;

[0026] FIG. 6A is a sectional view of a third stator lamination, in accordance with some embodiments of the present disclosure;

[0027] FIG. 6B is another sectional view of a third stator lamination, in accordance with some embodiments of the present disclosure;

[0028] FIG. 7 is a schematic diagram showing a flow direction of coolant when cooling end portions of a winding, in accordance with some embodiments of the present disclosure;

[0029] FIG. 8 is a schematic diagram showing a flow direction of coolant when cooling a winding in stator slots, in accordance with some embodiments of the present disclosure;

[0030] FIG. 9 is a diagram showing a structure of a second stator lamination, in accordance with some embodiments of the present disclosure;

[0031] FIG. 10 is a diagram showing a structure of a third stator lamination, in accordance with some embodiments of the present disclosure; and

[0032] FIG. 11 is a block diagram of a vehicle, in accordance with some embodiments of the present disclosure.

[0033] Reference signs: 100, motor; 1000, vehicle; 11, first stator portion; 101, first sub-slot; 102, first slot; 103, oil groove; 104, second sub-slot; 21, second stator portion; 211, first stator lamination; 212, second stator lamination; 213, third stator lamination; 201, first oil spraying hole; 202, second oil spraying hole; 203, third oil spraying hole; 204, communication passage; 12, winding; 13, insulating paper; 301, oil guide opening. DETAILED DESCRIPTION

[0034] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and will not be construed as limiting the present disclosure.

[0035] In the related art, oil spraying holes that are uniformly arranged and located on different pitch circles are generally disposed at two ends of a stator body, and coolant is sprayed onto end portions of a winding through these oil spraying holes, to cool the end portions of the winding; alternatively, the coolant is directly introduced into stator slots, to achieve immersion cooling of the winding in the stator slots. However, the cooling of the motor in the related art may only be achieved through a single cooling method. In other words, only one of the in-slot cooling method and end-portion spraying method can be used to cool the winding, which causes uneven cooling of the winding and a poor cooling effect.

[0036] In view of this, a motor is provided in some embodiments of the present disclosure.

[0037] The motor in some embodiments of the present disclosure is described below with reference to FIGS. 1A to 10.

[0038] The motor 100 includes a stator body. The stator body is provided with stator slots, and the stator body is further provided with an oil groove 103 surrounding an outer periphery of the stator body. The stator body has a first oil passage that communicates with the oil groove 103 in an axial direction of the stator body. The first oil passage extends in the axial direction of the stator body and extends to at least one end of the stator body. The first oil passage is used to guide a cooling medium to the end of the stator body. The stator body also has a second oil passage that communicates with the oil groove 103 in a radial direction of the stator body, and the second oil passage communicates the oil groove 103 with the stator slots.

[0039] For example, the motor 100 includes a stator body and a winding 12. The winding 12 is embedded in the stator body by means of wire insertion, to form a stator assembly. The stator assembly is fixed inside a housing of the motor 100 by means of shrink fitting. The housing of the motor 100 is provided with a liquid inlet, and the stator body is provided with an oil groove 103 communicating with the liquid inlet. The oil groove 103 surrounds an outer periphery of the stator body, and coolant may enter the oil groove 103 through the liquid inlet. The coolant may be oil. The stator body is provided with a first oil passage that communicates with the oil groove 103 in an axial direction of the stator body and a second oil passage that communicates with the oil groove 103 in the radial direction of the stator body.

[0040] The first oil passage extends along the axial direction of the stator body and extends to two end portions of the winding 12, and the coolant may be sprayed onto the end portions of the winding 12 through the first oil passage, thereby cooling the end portions of the winding 12. The second oil passage communicates the oil groove 103 with the stator slots, and the coolant in the oil groove 103 may flow into the stator slots through the second oil passage, thereby cooling the winding 12 in the stator slots. Therefore, in the motor 100 in some embodiments of the present disclosure, both cooling of the end portions of the winding 12 and cooling of the winding 12 in the stator slots may be achieved by providing the first oil passage and the second oil passage, thereby improving the heat dissipation effect of the motor 100.

[0041] In the motor 100 according to some embodiments of the present disclosure, the stator body has the first oil passage that communicates with the oil groove 103 in the axial direction of the stator body and the second oil passage that communicates with the oil groove 103 in the radial direction of the stator body. The first oil passage extends along the axial direction of the stator body and extends to the two end portions of the winding 12, and coolant may be sprayed onto the end portions of the winding 12 through the first oil passage, thereby cooling the end portions of the winding 12. The second oil passage communicates the oil groove 103 with the stator slots, and the coolant in the oil groove 103 may flow into the stator slots through the second oil passage, thereby cooling the winding 12 in the stator slots. Therefore, in the motor 100 in some embodiments of the present disclosure, both cooling of the end portions of the winding 12 and cooling of the winding 12 in the stator slots may be achieved by providing the first oil passage and the second oil passage, thereby improving the heat dissipation effect of the motor 100.

[0042] In some embodiments, the motor 100 includes a plurality of first oil passages and a plurality of second oil passages. The plurality of first oil passages are configured to be spaced apart from one another in a circumferential direction of the stator body and parallel to each other. The plurality of second oil passages are configured to be spaced apart from one another in the circumferential direction of the stator body. Axes of the plurality of first oil passages intersect axes of the plurality of second oil passages.

[0043] For example, the motor 100 includes a plurality of first oil passages. The plurality of first oil passages are spaced apart from one another in the circumferential direction of the stator body and are disposed parallel to one another. By providing the plurality of first oil passages on the stator body, the coolant may be sprayed onto the end portions of the winding 12 from multiple angles through the plurality of first oil passages, so that the coolant may be uniformly distributed to the end portions of the winding 12, thereby improving the cooling effect on the end portions of the winding 12.

[0044] The motor 100 further includes a plurality of second oil passages, the plurality of second oil passages are in one-to-one correspondence with the plurality of stator slots. The plurality of second oil passages are spaced apart from one another in the circumferential direction of the stator body. In this way, in an aspect, each second oil passage may be disposed directly opposite to the stator slot corresponding to the second oil passage in the radial direction of the stator body; in another aspect, the plurality of different second oil passages may communicate the stator slots corresponding to the second oil passages with the oil groove 103, thereby achieving cooling of the winding 12 in the plurality of stator slots and improving the heat dissipation effect of the motor 100.

[0045] In some embodiments, as shown in FIGS. 1A to 3, the stator body includes a first stator portion 11 and a plurality of second stator portions 21. First sub-slots 101 are disposed on an inner side of the first stator portion 11 in a radial direction of the first stator portion 11. The plurality of second stator portions 21 are disposed on two sides of the first stator portion 11 in a thickness direction of the first stator portion 11, and the second stator portion 21 is provided with second sub-slots 104 communicating with the first sub-slots 101. The first sub-slots 101 and the second sub-slots 104 together constitute the stator slots. Diameters of the second stator portions 21 are greater than a diameter of the first stator portion 11, and the oil groove 103 is defined between an outer peripheral surface of the first stator portion 11 and two adjacent second stator portions 21.

[0046] For example, the stator body is formed by the first stator portion 11 and the second stator portions 21. The second oil passages are disposed on the first stator portion 11 and the first oil passages are disposed on the second stator portions 21. The stator body includes two second stator portions 21. The two second stator portions 21 are disposed on two sides of the first stator portion 11 in the thickness direction of the first stator portion 11, respectively. The first sub-slots 101 are disposed on a side of the first stator portion 11 proximate to a center of the first stator portion 11, and the second subslots 104 are disposed on a side of the second stator portion 21 proximate to a center of the second stator portion 21. The first sub-slots 101 and the second sub-slots 104 together define the stator slots, and the winding 12 is accommodated in the first sub-slots 101 and the second sub-slots 104. The diameter of the first stator portion 11 is less than the diameter of the second stator portion 21, and the oil groove 103 is defined between the outer peripheral surface of the first stator portion 11 and the two adjacent second stator portions 21.

[0047] The oil groove 103 communicates with the first oil passages and the second oil passages. The coolant may flow into the first oil passages and the second oil passages through the oil groove 103, to cool the end portions of the winding 12 and the winding 12 in the stator slots, thereby improving the heat dissipation effect of the motor 100.

[0048] In some embodiments, as shown in FIGS. 5A to 6B, the first stator portion 11 is provided with first slots 102 extending along the radial direction of the first stator portion 11. The first slots 102 extend along the radial direction of the first stator portion 11 and are spaced apart from the first sub-slots 101 in the radial direction of the first stator portion 11. The second stator portion 21 is provided with communication passages 204 extending along an axial direction of the second stator portion 21 and communicating with the second sub-slots 104. The communication passage 204 and at least a portion of the first slot 102 are arranged directly opposite to each other in the axial direction of the stator body.

[0049] For example, the plurality of first slots 102 are arranged in a circumferential direction of the first stator portion 11, and each first slot 102 extends along the radial direction of the first stator portion 11. The plurality of first slots 102 are in one-to-one correspondence with the plurality of first sub-slots 101, each of the plurality of first slots 102 extends along the radial direction of the first stator portion 11, and the plurality of first slots 102 are spaced apart from each other. The first sub-slot 101 adjacent to the first slot 102 is spaced apart from the first slot 102.

[0050] The second stator portion 21 is provided with the plurality of communication passages 204, and each communication passage 204 extends along an axial direction of the second stator portion 21. The plurality of communication passages 204 correspond to the plurality of first slots 102 and the plurality of second sub-slots 104. The communication passage 204 and at least a portion of the corresponding first slot 102 are arranged directly opposite to each other in the axial direction, and the communication passage 204 communicates with the corresponding second sub-slot 104.

[0051] The coolant in the oil groove 103 may flow along the radial direction of the stator body through the first slots 102. When the coolant flows to the communication passages 204, the coolant flows into the stator slots through the communication passages 204, thereby cooling the winding 12 in the stator slots, improving the cooling effect of the winding 12 in the stator slots, and improving the heat dissipation effect of the motor 100.

[0052] In some embodiments, as shown in FIGS. 2, 9 and 10, the second stator portion 21 includes: a first stator lamination 211, a second stator lamination 212, and a third stator lamination 213.

[0053] The first stator lamination 211 is provided with the second sub-slots 104, and first oil spraying holes 201 spaced apart from the second sub-slots 104 are disposed on an outer periphery of the first stator lamination 211.

[0054] The second stator lamination 212 is disposed on a side of the first stator lamination 211 proximate to the first stator portion 11. The second stator lamination 212 is provided with second oil spraying holes 202 communicating with the first oil spraying holes 201, and the second stator lamination 212 is provided with the second sub-slots 104.

[0055] The third stator lamination 213 is disposed between the second stator lamination 212 and the first stator portion 11. The third stator lamination 213 is provided with third oil spraying holes 203 communicating the oil groove 103 with the second oil spraying holes 202. The third stator lamination 213 is provided with the second sub-slots 104 and fourth oil spraying holes communicating with the second sub-slots 104. The fourth oil spraying holes are configured as the communication passages 204, and the fourth oil spraying holes communicate with the first slots 102. The first oil spraying holes 201, the second oil spraying holes 202 and the third oil spraying holes 203 together define the first oil passages.

[0056] For example, the second stator portion 21 is formed by the first stator lamination 211, the second stator lamination 212, and the third stator lamination 213. The second sub-slots 104 are disposed on sides of the first stator lamination 211, the second stator lamination, and the third stator lamination proximate to an axis of the stator body. The first stator lamination 211, the second stator lamination 212, and the third stator lamination 213 are provided with the first oil spraying hole 201, the second oil spraying hole 202, and the third oil spraying hole 203, respectively.

[0057] Shapes and sizes of the first oil spraying hole 201, the second oil spraying hole 202 and the third oil spraying hole 203 are not limited herein. The shapes of the first oil spraying hole 201, the second oil spraying hole 202 and the third oil spraying hole 203 may be varied according to the design of the motor 100.

[0058] The first oil spraying holes 201 are formed on a yoke portion of the first stator lamination 211 and proximate to an outer periphery of the first stator lamination 211. The second oil spraying holes 202 are formed on a yoke portion of the second stator lamination 212 and proximate to an outer periphery of the second stator lamination 212. The third oil spraying holes 203 are formed on a yoke portion of the third stator lamination 213 and proximate to an outer periphery of the third stator lamination 213.

[0059] The second stator lamination 212 is disposed on the side of the first stator lamination 211 proximate to the first stator portion 11, and the third stator lamination 213 is disposed on the side of the second stator lamination 212 proximate to the first stator portion 11. The first oil spraying holes 201, the second oil spraying holes 202 and the third oil spraying holes 203 together define the first oil passages. The coolant in the oil groove 103 enters the second oil spraying holes 202 through the third oil spraying holes 203 and is finally sprayed onto the end portions of the winding 12 through the first oil spraying holes 201, thereby achieving cooling of the end portions of the winding 12.

[0060] The fourth oil spraying holes communicating with the second sub-slots 104 are also formed on the third stator lamination 213. The fourth oil spraying holes may be configured as the communication passages 204, and the fourth oil spraying hole and at least a portion of the first slot 102 are arranged directly opposite to each other in the axial direction of the stator body. The coolant in the oil groove 103 may flow along the radial direction of the stator body through the first slots 102. When the coolant flows to the fourth oil spraying holes, the coolant flows into the stator slots through the fourth oil spraying holes, thereby cooling the winding 12 in the stator slots.

[0061] In this way, in the motor 100 in some embodiments of the present disclosure, both cooling of the end portions of the winding 12 and cooling of the winding 12 in the stator slots may be achieved with the arrangement described above, which is conducive to improving the uniformity of heat dissipation of the motor 100, and improves the heat dissipation effect of the motor 100.

[0062] In some embodiments, diameters of the first oil spraying holes 201 are R1, diameters of the second oil spraying holes 202 are R2, and diameters of the third oil spraying holes 203 are R3, R1 is less than R2, and R2 is equal to R3 (i.e., R1 < R2 = R3). That is to say, the diameters of the second oil spraying holes 202 are the same as the diameters of the third oil spraying holes 203, and the diameters of the first oil spraying holes 201 are less than the diameters of the second oil spraying holes 202 and the diameters of the third oil spraying holes 203. In the stacking process of the first stator lamination 211, the second stator lamination 212, and the third stator lamination 213, the second oil spraying hole 202 and the third oil spraying hole 203 are arranged directly opposite to each other, and the first oil spraying hole 201 is staggered with the second oil spraying hole 202 and the third oil spraying hole 203.

[0063] Such arrangement forms a first oil passage that is in a shape of a step and inclined in the circumferential direction of the stator body, which is conducive to guiding the coolant to flow in the circumferential direction of the stator body and facilitates the distribution of the coolant during heat dissipation, so that the coolant in the first oil passage may be sprayed onto the end portions of the winding 12 along the circumferential direction of the stator body, thereby achieving direct spray cooling of the end portions of the winding 12 in the motor 100, effectively reducing the temperature of the end portions of the winding 12 of the stator, and improving the heat dissipation effect of the motor 100.

[0064] In some embodiments, as shown in FIGS. 5A and 5B, the first stator lamination 211 is provided with 2N first oil spraying holes 201, the second stator lamination 212 is provided with N second oil spraying holes 202, and the third stator lamination 213 is provided with N third oil spraying holes 203. In the stacking process of the second stator lamination 212 and the third stator lamination 213, the N second oil spraying holes 202 disposed on the second stator lamination 212 are arranged in one-to-one correspondence with the N third oil spraying holes disposed on the third stator lamination 213 in the axial direction of the stator body. In the stacking process of the first stator lamination 211, the second stator lamination 212 and the third stator lamination 213, two adjacent first oil spraying holes 201 are arranged corresponding to one second oil spraying hole 202.

[0065] That is to say, one of the two adjacent first oil spraying holes 201 communicates with at least a portion of a second oil spraying hole 202, and the other of the two adjacent first oil spraying holes 201 communicates with at least another portion of the second oil spraying hole 202. In this way, oil spraying directions of the two adjacent first oil spraying holes 201 are opposite in the circumferential direction of the stator body, so that the coolant may be sprayed onto the end portions of the winding 12 in multiple directions when passing through the plurality of first oil spraying holes 201, thereby increasing a coverage region of the coolant, improving the heat dissipation effect of the motor 100, and ensuring the temperature uniformity of the motor 100.

[0066] In some embodiments, as shown in FIGS. 6A and 6B, the motor 100 further includes a winding 12 and insulating layers. The winding 12 is accommodated in the stator slots. The insulating layers cover an outer surface of the winding 12, and an oil guide opening 301 is disposed on an outer side of each of the insulating layers in a radial direction of the insulating layer.

[0067] For example, the insulating layer may include insulating paper 13. At least a portion of the winding 12 is accommodated in the stator slots. The insulating paper 13 is also accommodated in the stator slot, and a width of the insulating paper 13 is the same as a width of the stator slot. The insulating paper 13 in the stator slot may provide necessary insulation protection for the motor 100, ensuring that insulation breakdown and discharge phenomena do not occur inside the motor 100, so as to avoid the occurrence of faults such as short circuit, electric leakage, and burnout of the motor 100, thereby ensuring the stable operation of the motor 100. The insulating paper 13 is wrapped around an outer periphery of the winding 12, and there is a certain gap between the insulating paper 13 and the winding 12. During the operation of the motor 100, the winding 12 may be subjected to mechanical vibration and friction from the outside or inside. The insulating paper 13 wrapped around the winding 12 may form a protective layer, to reduce the mechanical damage to the winding 12.

[0068] Moreover, the insulating paper 13 may also isolate the winding 12 from the external environment, to prevent dust, oil contamination and other impurities from adhering to the winding 12, thereby keeping the winding 12 clean, and reducing the risk of electrical faults caused by impurities. The oil guide opening 301 is disposed on an outer layer of the insulating paper 13 in a radial direction of the insulating paper 13. The coolant entering the stator slot through the fourth oil spraying hole may flow into a gap between the insulating paper 13 and the winding 12 through the oil guide opening 301, so that the coolant may directly contact the winding in the stator slot and exchange heat with the winding, thereby achieving direct cooling of the winding 12 in the stator slot, improving the heat dissipation effect of the motor 100, and enhancing the operational stability and reliability of the motor 100.

[0069] In some embodiments, the insulating paper 13 is disposed around the outer periphery of the winding 12. A first side edge and second side edge of the insulating paper 13 are arranged in a staggered manner, and the first side edge of the insulating paper 13 is set to 1 / 2 of a width of the insulating paper 13 and the second side edge of the insulating paper 13 is set to 3 / 4 of the width of the insulating paper 13. In this way, the insulating paper 13 may completely wrap the winding 12 to protect the winding 12, thereby reducing damage to the winding 12, and improving the stability and reliability of the motor 100 during operation.

[0070] Moreover, the first side edge and second side edge of the insulating paper 13 are arranged at an interval in the radial direction of the stator body, to form the oil guide opening 301. A third oil passage is formed between the first side edge and the second side edge of the insulating paper 13, and the third oil passage is used for the flow of the coolant and guiding the flow of the coolant. The third oil passage communicates with the gap between the insulating paper 13 and the winding 12.

[0071] The coolant entering the stator slot through the fourth oil spraying hole may enter the third oil passage through the oil guide opening 301, and then the coolant flows into the gap between the insulating paper 13 and the winding 12 along the third oil passage. In this way, the coolant may directly contact the winding in the stator slot and exchange heat with the winding, thereby achieving direct cooling of the winding 12 in the stator slots, improving the heat dissipation effect of the motor 100, and enhancing the operational stability and reliability of the motor 100.

[0072] It will be noted that the first side edge and second side edge of the insulating paper 13 are staggered on the outer side of the winding 12 in the radial direction of the winding 12, and are arranged at an interval in the radial direction of the stator body, so as to form the oil guide opening 301.

[0073] A vehicle 1000 is further provided in some embodiments of the present disclosure. As shown in FIG. 11, the vehicle 1000 is provided with the motor 100 described above. Since the vehicle 1000 according to some embodiments of the present disclosure is equipped with the motor 100 described above, when the vehicle according to some embodiments of the present disclosure is running, the vehicle has good heat dissipation performance, thereby improving the stability and reliability of the vehicle during operation.

[0074] In the description of the present disclosure, it will be understood that orientation or position relationships indicated by the terms such as "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial" and "circumferential" are based on orientation or position relationships shown in the accompanying drawings, and are merely for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the referred device or element needs to have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present disclosure.

[0075] In the description of the present disclosure, the term such as "first feature" or "second feature" may include one or more of that feature.

[0076] In the description of the present disclosure, the term "a / the plurality of" means two or more.

[0077] In the description of the present disclosure, the expression that the first feature is "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may also include the first feature and the second feature not being in direct contact but in contact through another feature between them.

[0078] In the description of the present disclosure, the expression that the first feature is "above", "over", or "on" the second feature includes the first feature being directly above or obliquely above the second feature, or merely means that a horizontal height of the first feature is higher than that of the second feature.

[0079] In the description of the specification, the description of the reference terms such as "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" is intended to indicate that specific features, structures, materials or characteristics described in conjunction with the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. In the specification, schematic expressions of the above terms do not necessarily refer to the same embodiment(s) or example(s). Moreover, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0080] Although embodiments of the present disclosure have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, replacements and alterations may be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A motor (100), comprising:a stator body, provided with stator slots and an oil groove (103) that surrounds an outer periphery of the stator body;wherein the stator body is further provided with at least one first oil passage that communicates with the oil groove (103) in an axial direction of the stator body, the at least one first oil passage extends in the axial direction of the stator body and extends to at least one end of the stator body, and the at least one first oil passage is used to guide a cooling medium to the end of the stator body; andthe stator body is further provided with at least one second oil passage that communicates with the oil groove (103) in a radial direction of the stator body, and the at least one second oil passage communicates the oil groove (103) with the stator slots.

2. The motor (100) according to claim 1, whereinthe at least one first oil passage includes a plurality of first oil passages, the plurality of first oil passages are configured to be spaced apart from one another in a circumferential direction of the stator body and parallel to each other; andthe at least one second oil passage includes a plurality of second oil passages, the plurality of second oil passages are configured to be spaced apart from one another in the circumferential direction of the stator body, and axes of the plurality of first oil passages intersect axes of the plurality of second oil passages.

3. The motor (100) according to claim 2, wherein the stator body includes:a first stator portion (11), first sub-slots (101) being disposed on an inner side of the first stator portion (11) in a radial direction of the first stator portion (11); anda plurality of second stator portions (21), respectively disposed on two sides of the first stator portion (11) in a thickness direction of the first stator portion (11), any one of the plurality of second stator portions (21) being provided with second sub-slots (104) communicating with the first sub-slots (101), and the first sub-slots (101) and the second sub-slots (104) together constitute the stator slots;wherein diameters of the second stator portions (21) are greater than a diameter of the first stator portion (11), and the oil groove (103) is defined between an outer peripheralsurface of the first stator portion (11) and two adjacent second stator portions (21).

4. The motor (100) according to claim 3, wherein the first stator portion (11) is provided with first slots (102) extending in the radial direction of the first stator portion (11), the first slots (102) extend in the radial direction of the first stator portion (11) and are spaced apart from the first sub-slots (101) in the radial direction of the first stator portion (11); andthe second stator portion (21) is provided with communication passages (204) that extend in an axial direction of the second stator portion (21) and communicate with the second sub-slots (104), and a communication passage (204) is disposed directly opposite to at least a portion of a first slot (102) in the axial direction of the stator body.

5. The motor (100) according to claim 4, wherein the second stator portion (21) includes:a first stator lamination (211), the first stator lamination (211) being provided with the second sub-slots (104), and first oil spraying holes (201) spaced apart from the second sub-slots (104) being disposed on an outer periphery of the first stator lamination (211);a second stator lamination (212), disposed on a side of the first stator lamination (211) proximate to the first stator portion (11), the second stator lamination (212) being provided with second oil spraying holes (202) communicating with the first oil spraying holes (201), and the second stator lamination (212) being further provided with the second sub-slots (104); anda third stator lamination (213), disposed between the second stator lamination (212) and the first stator portion (11), the third stator lamination (213) being provided with third oil spraying holes (203) communicating the oil groove (103) with the second oil spraying holes (202), the third stator lamination (213) being further provided with the second subslots (104) and fourth oil spraying holes communicating with the second sub-slots (104), the fourth oil spraying holes being configured as the communication passages (204) and communicating with the first slots (102);wherein the first oil spraying holes (201), the second oil spraying holes (202), and the third oil spraying holes (203) together constitute the first oil passages.

6. The motor (100) according to claim 5, wherein diameters of the first oil sprayingholes (201) are R1, diameters of the second oil spraying holes (202) are R2, diameters of the third oil spraying holes (203) are R3, R1 is less than R2, and R2 is equal to R3 (i.e., R1 < R2 = R3).

7. The motor (100) according to claim 5, wherein the first stator lamination (211) is provided with 2N first oil spraying holes (201), the second stator lamination (212) is provided with N second oil spraying holes (202), and the third stator lamination (213) is provided with N third oil spraying holes (203);wherein two adjacent first oil spraying holes (201) of the 2N first oil spraying holes (201) have opposite oil spraying directions, and communicate with one of the N second oil spraying holes (202).

8. The motor (100) according to any one of claims 1 to 7, further comprising:a winding (12), accommodated in the stator slots; andinsulating layers, covering an outer surface of the winding (12), an oil guide opening (301) being disposed on an outer side of each of the insulating layers in a radial direction of the insulating layer.

9. The motor (100) according to claim 8, wherein the insulating layer is disposed around an outer periphery of the winding (12), a first side edge and a second side edge of the insulating layer being staggered on an outer side of the winding (12) in a radial direction of the winding (12) and arranged at an interval in the radial direction of the stator body, to constitute the oil guide opening (301).

10. A vehicle (1000), comprising the motor (100) according to any one of claims 1 to 9.

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