Motor, power assembly and vehicle

Abstract

A motor, a power assembly and a vehicle, the motor comprises a stator, a winding and a collector ring, the winding is arranged in a stator groove, the collector ring is arranged on one side of the stator along the axial direction, a collector space is formed between the collector ring and the stator, and the collector ring is in sealing connection with the end face of the stator so as to seal the collector space. According to the technical scheme, the sealing structure is arranged between the collector ring and the end face of the stator, and the stator and the collector ring are in sealed connection through the sealing structure, so that the leakage amount of the cooling liquid between the stator and the collector ring is reduced, the influence of the leakage of the cooling liquid on the rotor is reduced, and the operation stability of the motor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of motor sealing, and in particular to a motor, a powertrain and a vehicle. Background Art

[0002] The motor generates a lot of heat during operation, which will affect the normal use of the motor. In order to dissipate the heat of the motor, in the related art, collector rings are installed on both sides of the ends of the stator core of the motor. When the coolant flows into the collector ring from the liquid inlet of the motor, the coolant can be collected in the collector ring and infiltrate the winding in the collector ring, thereby reducing the temperature of the motor winding.

[0003] However, when the coolant is collected in the collector ring, part of the coolant may leak toward the rotor through the contact gap between the collector ring and the stator core, affecting the normal use of the rotor. Summary of the invention

[0004] The purpose of the present application is to provide a motor, a powertrain and a vehicle, aiming to solve the problem of easy leakage of coolant in the collector ring in the related art.

[0005] To achieve the purpose of the present application, in a first aspect, the present application provides a motor, the motor comprising:

[0006] a stator, wherein the stator is formed with stator slots;

[0007] a winding disposed in the stator slot; and

[0008] A collector ring is arranged on one side of the stator along the axial direction, a collector space is formed between the collector ring and the stator, and the collector ring is sealed and connected to the end surface of the stator to form a seal for the collector space.

[0009] In a possible implementation, the collector ring has a contact surface, and the contact surface is arranged facing an end surface direction of the stator along the axial direction;

[0010] The motor further comprises a sealing ring, which is arranged between the contact surface and the end surface of the stator, and the sealing ring is in contact with the contact surface and the end surface of the stator.

[0011] In a possible implementation manner, the contact surface is recessed in a direction away from the stator to form a groove;

[0012] The sealing ring is arranged in the groove, and the sealing ring contacts the groove wall surface of the groove and the end surface of the stator.

[0013] In a possible implementation, the stator includes a stator core and a seal, the stator slot is provided in the stator core, and the stator slot is provided with an opening facing the radial inner side of the stator core; the seal is at least partially provided in the stator slot to seal the opening;

[0014] The collector ring is in contact with an axial end surface of the stator core, and the collector ring is sealed and connected to the sealing member.

[0015] In a possible implementation, the stator core is provided with a plurality of stator slots, the sealing member has a plurality of sealing strips, and each of the sealing strips is sealed at an opening of each of the stator slots;

[0016] A plurality of protrusions are provided on the side of the collector ring facing the stator core, and the protrusions are arranged at intervals along the circumference of the collector ring;

[0017] The protrusion extends into each of the stator slots along the axial direction of the stator core, and the protrusion is sealed and connected to the sealing member.

[0018] In a possible implementation, the protrusion and the sealing strip are spaced apart along the axial direction of the stator core;

[0019] The motor further comprises a sealing ring, which is arranged between the protruding portion and the sealing strip, and the sealing ring contacts the protruding portion and the sealing strip to seal the protruding portion and the sealing strip.

[0020] In a possible implementation manner, a first protrusion is provided on a side of the sealing strip facing the protruding portion, and the first protrusion is in contact with the protruding portion;

[0021] A second protrusion is provided on the side of the protrusion facing the sealing strip, and the second protrusion contacts the sealing strip; the second protrusion and the first protrusion are spaced apart in the radial direction of the stator core;

[0022] The motor further includes a sealing ring, which is disposed between the first protrusion and the second protrusion, and the sealing ring contacts the first protrusion and the second protrusion to seal the first protrusion and the second protrusion.

[0023] In a possible implementation manner, a first protrusion is provided on a side of the sealing strip facing the protruding portion, and the first protrusion is in contact with the protruding portion;

[0024] A second protrusion is provided on a side of the protrusion facing the sealing strip, the second protrusion is in contact with the first protrusion, and the second protrusion and the sealing strip are spaced apart along the axial direction of the stator core;

[0025] The motor further includes a sealing ring, which is disposed between the first protrusion, the second protrusion and the sealing strip, and is in contact with the first protrusion, the second protrusion and the sealing strip.

[0026] In a possible implementation, one of the protrusion and the sealing strip is provided with a tenon portion, and the other is provided with a recessed portion, and the tenon portion is used to cooperate with the recessed portion to form a seal between the protrusion and the sealing strip.

[0027] In a possible implementation, the cross-sectional shape of the tenon portion along a direction perpendicular to the axial direction of the stator core includes a triangle, a rectangle, a circle, or an ellipse.

[0028] In a possible implementation, the sealing member includes a sealing ring and a plurality of sealing strips, the sealing strips are connected to the sealing ring, and the sealing strips are arranged at intervals along the circumference of the sealing ring; the sealing strips are arranged in the openings of the stator slots, and the sealing rings are in contact with the end surface of the stator core;

[0029] The collecting ring is sealingly connected to the sealing ring.

[0030] In a possible implementation, the collector ring and the sealing ring are spaced apart along the radial direction of the stator core;

[0031] The motor further comprises a sealing ring, which is arranged between the collector ring and the sealing ring, and is in contact with the collector ring and the sealing ring.

[0032] In a possible implementation, a side of the collector ring facing the stator core is provided with an annular protrusion, and the annular protrusion is in contact with the stator core; the annular protrusion and the sealing ring are arranged at intervals along the radial direction of the stator core;

[0033] The motor further comprises a sealing ring, which is arranged between the annular protrusion and the sealing ring, and the sealing ring contacts the stator core, the annular protrusion and the radial outer side of the sealing ring.

[0034] In a possible implementation, a side of the collector ring facing the stator core is provided with an annular protrusion, and the annular protrusion contacts the radial outer side of the sealing ring; the annular protrusion and the end surface of the stator core are spaced apart along the axial direction of the stator core;

[0035] The motor further comprises a sealing ring, which is arranged between the annular protrusion, the sealing ring and the stator core, and the sealing ring is in contact with the annular protrusion, the sealing ring and the stator core.

[0036] In a second aspect, the present application further proposes a powertrain, the powertrain comprising a motor, the motor comprising:

[0037] a stator, wherein the stator is formed with stator slots;

[0038] a winding disposed in the stator slot; and

[0039] A collector ring is arranged on one side of the stator along the axial direction, a collector space is formed between the collector ring and the stator, and the collector ring is sealed and connected to the end surface of the stator to form a seal for the collector space.

[0040] In a third aspect, the present application further proposes a vehicle, the vehicle comprising a powertrain, the powertrain comprising a motor, the motor comprising:

[0041] a stator, wherein the stator is formed with stator slots;

[0042] a winding disposed in the stator slot; and

[0043] A collector ring is arranged on one side of the stator along the axial direction, a collector space is formed between the collector ring and the stator, and the collector ring is sealed and connected to the end surface of the stator to form a seal for the collector space.

[0044] The technical solution of the present application is to set a sealing structure between the collector ring and the stator end face, and seal the stator and the collector ring through the sealing structure, so as to reduce the leakage of coolant between the stator and the collector ring, reduce the impact of coolant leakage on the rotor, and improve the stability of motor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 A schematic diagram of the structure of an embodiment of the motor provided in this application;

[0047] Figure 2 for Figure 1 Schematic diagram of the assembly of the middle collector ring and the stator core;

[0048] Figure 3 for Figure 1 A schematic structural diagram of an embodiment of a stator core;

[0049] Figure 4 for Figure 1 A schematic structural diagram of another embodiment of the stator core;

[0050] Figure 5 for Figure 2 A magnified view at point A;

[0051] Figure 6 for Figure 1 A structural schematic diagram of an embodiment of a sealing structure between a middle collector ring and a stator;

[0052] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a middle collector ring;

[0053] Figure 8 for Figure 1 A schematic structural diagram of a first embodiment of a sealing structure of a middle collector ring and a sealing strip;

[0054] Fig. 9 for Figure 1 A schematic structural diagram of a second embodiment of the sealing structure of the middle collector ring and the sealing strip;

[0055] Fig.10 for Figure 1 A schematic structural diagram of a third embodiment of the sealing structure of the middle collector ring and the sealing strip;

[0056] Fig.11 for Figure 1 A schematic structural diagram of the first embodiment when the middle collector ring and the sealing strip are sealed by a mortise and tenon structure;

[0057] Fig.12 for Figure 1 A schematic structural diagram of the second embodiment when the middle collector ring and the sealing strip are sealed by a mortise and tenon structure;

[0058] Fig.13 for Figure 1 A schematic structural diagram of a third embodiment in which the middle collector ring and the sealing strip are sealed using a mortise and tenon structure;

[0059] Fig.14 for Figure 1 A schematic structural diagram of a fourth embodiment in which the middle collector ring and the sealing strip are sealed using a mortise and tenon structure;

[0060] Fig.15 for Figure 1 A schematic diagram of the three-dimensional structure of the middle seal;

[0061] Fig.16 for Figure 1 Schematic diagram of the assembly of the middle seal and the stator core;

[0062] Fig.17 for Fig.16 Enlarged view at B;

[0063] Fig.18 for Figure 1 A schematic structural diagram of a first embodiment of a sealing structure of a middle collector ring and a sealing ring;

[0064] Fig.19 for Figure 1 A schematic structural diagram of a second embodiment of the sealing structure of the middle collector ring and the sealing ring;

[0065] Fig. 20 for Figure 1 A schematic structural diagram of a third embodiment of the sealing structure of the middle collector ring and the sealing ring;

[0066] Description of reference numerals:

[0067] 100-motor;

[0068] 1-stator, 11-stator core, 111-stator slot, 112-opening, 12-seal, 121-seal strip, 1211-first protrusion, 122-seal ring, 13-winding, 131-first winding part, 132-second winding part;

[0069] 2-shell, 21-liquid inlet;

[0070] 3-collecting ring, 3a-first collecting ring, 3b-second collecting ring, 31-collecting space, 31a-first collecting space, 31b-second collecting space, 32-contact surface, 321-groove, 33-protrusion, 331-second protrusion, 34-annular protrusion, 35-tenon portion, 36-recessed portion;

[0071] 4- Sealing ring. DETAILED DESCRIPTION

[0072] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0073] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0074] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0075] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0076] The present invention provides a vehicle, which can be a fuel vehicle, an electric vehicle, or a hybrid vehicle. The vehicle can be a car, a truck, or a forklift, which is not limited by the present invention.

[0077] The vehicle includes a vehicle body, wheels, and a power assembly. The vehicle body serves as a supporting frame of the vehicle and is used to support and connect various parts of the vehicle. The wheels are rotatably connected to the vehicle, and the number of wheels can be set to two, three, or four, which is not limited in the present invention.

[0078] The powertrain is housed in the vehicle body and is connected to the wheels through axles. The powertrain is used to drive the wheels to rotate, thereby driving the vehicle to move. The powertrain includes a motor and a reducer. The motor is the power source of the powertrain and is used to provide power for the rotation of the wheels. The reducer is connected between the motor and the wheels. The reducer is used to control the torque of the motor acting on the wheels, thereby controlling the wheel speed and ultimately controlling the vehicle's travel speed.

[0079] The vehicle further includes a cooling device, which includes a hydraulic pump, a radiator, and a pipeline. The hydraulic pump, the radiator, and the motor are interconnected through the pipeline. A coolant flows in the pipeline, and the coolant may be cooling water or cooling oil, which is not limited in the present invention. The coolant may circulate between the motor and the radiator under the drive of the hydraulic pump, thereby realizing a cooling cycle for the motor.

[0080] Please refer to Figure 1 The motor 100 includes a housing 2, a rotor (not shown) and a stator 1. The housing 2 serves as a supporting frame of the motor 100 and is used to support and connect the various parts of the motor 100. The housing 2 may be rectangular, square, or other regular or irregular shapes, which is not limited by the present invention. The housing 2 is formed with a mounting cavity.

[0081] The stator 1 is arranged in the installation cavity, and the stator 1 includes a stator core 11 and a winding 13. The stator core 11 is fixedly connected to the cavity wall of the installation cavity, and the stator core 11 has a first end face and a second end face that are arranged opposite to each other. The stator core 11 is provided with a stator slot 111, and the winding 13 is installed in the stator slot 111. The winding 13 has a first winding portion 131 protruding from the first end face and a second winding portion 132 protruding from the second end face. The winding 13 is connected to an external circuit through the first winding portion 131 and the second winding portion 132 to convert the electrical energy of the external circuit into magnetic energy and generate a first magnetic field.

[0082] The rotor is rotatably arranged in the stator core 11, and the rotor includes a rotating shaft and a permanent magnet. The rotating shaft is rotatably arranged in the installation cavity, and at least one end of the rotating shaft protrudes outside the housing 2 to be connected to the reducer. The permanent magnet is sleeved on the rotating shaft, and the permanent magnet is used to generate a second magnetic field that can interact with the first magnetic field, thereby driving the rotating shaft to rotate.

[0083] During operation of the motor 100, the winding 13 of the motor 100, especially the first winding part 131 and the second winding part 132 of the winding 13 connected to the external circuit, generates a large amount of heat, which may affect the normal use of the motor 100. To cool the motor 100, the housing 2 of the motor 100 is provided with a liquid inlet 21, which is connected to the installation cavity.

[0084] The motor 100 further includes a collector ring 3, which is arranged on one side of the stator core 11 along the axial direction, and the collector ring 3 is used to form a collector space 31. One collector ring 3 may be provided, or two collector rings 3 may be provided. When one collector ring 3 is provided, the collector ring 3 may be provided on one side of the first end face of the stator core 11, or on one side of the second end face of the stator core 11. The present application does not limit this. For example, in the present application, the collector ring 3 includes a first collector ring 3a and a second collector ring 3b. The first collector ring 3a is provided on one side of the first end face of the stator core 11, and a first collector space 31a is formed between the first collector ring 3a and the first end face, and the first winding portion 131 is provided in the first collector space 31a; the second collector ring 3b is provided on one side of the second end face of the stator core 11, and a second collector space 31b is formed between the second collector ring 3b and the second end face, and the second winding portion 132 is provided in the second collector space 31b.

[0085] The liquid inlet 21 is connected with the first collecting space 31a and the second collecting space 31b. The coolant can flow into the first collecting space 31a and the second collecting space 31b through the liquid inlet 21, and under the action of the collecting of the first collecting space 31a and the second collecting space 31b, the first winding part 131 and the second winding part 132 arranged in the first collecting space 31a and the second collecting space 31b are immersed, thereby reducing the temperature of the first winding part 131 and the second winding part 132.

[0086] However, in the related art, after entering the first collecting space 31a and the second collecting space 31b, the coolant is prone to leak into the rotor from the first collecting ring 3a and the first end surface of the stator core 11, or the second collecting ring 3b and the second end surface of the stator core 11, thereby affecting the normal use of the rotor.

[0087] Please refer to Figure 2 In order to solve the above problems, in the present application, the collector ring 3 is sealed and connected to an end face of the stator 1 along the axial direction. The technical solution of the present application sets a sealing structure between the collector ring 3 and the end face of the stator 1, and the stator 1 and the collector ring 3 are sealed and connected through the sealing structure, so as to reduce the leakage of the coolant between the stator 1 and the collector ring 3, reduce the influence of the coolant leakage on the rotor, and improve the stability of the operation of the motor 100.

[0088] Hereinafter, the sealing structure between the collector ring 3 and the stator 1 in the present application will be described in detail with reference to the accompanying drawings.

[0089] Please refer to Figure 3 and Figure 4 The stator core 11 has stator slots 111, and the winding 13 is installed in the stator slots 111. The stator slots 111 can be as follows Figure 3 The closed groove shown can also be Figure 4 As shown, an open slot with an opening 112 is provided on the radial inner side of the stator core 11 (ie, in the direction of the stator core 11 facing the rotor side).

[0090] Please refer to Figure 5 When the stator slot 111 is a closed slot, in order to achieve the sealing between the collector ring 3 and the stator 1, in one embodiment of the present application, the collector ring 3 has a contact surface 32, and the contact surface 32 is arranged in an axial end surface direction facing the stator 1. The motor 100 also includes a sealing ring 4, which is arranged between the contact surface 32 and the end surface of the stator 1. The sealing ring 4 is in contact with the contact surface 32 and the end surface of the stator 1. In this way, a seal is formed between the contact surface 32 and the end surface of the stator 1, thereby reducing the leakage of coolant between the stator 1 and the collector ring 3, reducing the impact of coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0091] Please refer to Figure 6In order to reduce the difficulty of installing the sealing ring 4, in another possible implementation of the present application, the contact surface 32 is recessed in the direction away from the stator 1 to form a groove 321, and the sealing ring 4 is arranged in the groove 321. The groove 321 is used to provide positioning for the setting of the sealing ring 4, thereby reducing the difficulty of installing the sealing ring 4 between the contact surface 32 and the end face of the stator 1. The sealing ring 4 contacts the groove wall surface of the groove 321 and the end face of the stator 1, so as to form a seal between the groove 321 and the end face of the stator 1, thereby reducing the leakage of the coolant between the stator 1 and the collector ring 3, reducing the impact of the coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0092] Please refer to Figure 4 When the stator slot 111 is an open slot, in order to prevent the flow in the collecting space 31 from flowing to the rotor through the opening 112 of the stator slot 111, in the present application, the stator 1 also includes a seal 12, and the material of the seal 12 can be rubber, silicone, polytetrafluoroethylene, or polyimide, which is not limited in the present application. The seal 12 has a plurality of sealing strips 121, each of which is correspondingly arranged in each stator slot 111, and the sealing strips 121 are used to seal the opening 112 of the stator slot 111, thereby reducing the amount of coolant in the stator slot 111 leaking toward the rotor.

[0093] Please refer to Figure 7 In order to achieve sealing between the collector ring 3 and the stator 1 when the stator slot 111 is an open slot, in one embodiment of the present application, a plurality of protrusions 33 are provided on the side of the collector ring 3 facing the stator core 11, and the protrusions 33 are arranged at intervals along the circumference of the collector ring 3; each protrusion 33 extends into each stator slot 111 along the axial direction of the stator core 11, and the protrusion 33 is sealed and connected to the sealing strip 121, so as to reduce the leakage of coolant between the stator and the collector ring 3, reduce the impact of coolant leakage on the rotor, and improve the stability of the operation of the motor 100.

[0094] Please refer to Figure 8 There are many ways to seal and connect the protrusion 33 and the sealing strip 121. In one embodiment of the present application, the protrusion 33 and the sealing strip 121 are spaced apart along the axial direction of the stator core 11. The sealing ring 4 of the motor 100 is arranged between the protrusion 33 and the sealing strip 121 and contacts the protrusion 33 and the sealing strip 121. In this way, a seal is formed between the protrusion 33 and the sealing strip 121, thereby reducing the leakage of coolant at the connection between the protrusion 33 and the sealing strip 121, reducing the impact of coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0095] Please refer to Fig. 9In another possible implementation manner of the present application, a first protrusion 1211 is provided on the side of the sealing strip 121 facing the protrusion 33, and the first protrusion 1211 is in contact with the protrusion 33. A second protrusion 331 is provided on the side of the protrusion 33 facing the sealing strip 121, and the second protrusion 331 is in contact with the sealing strip 121; the second protrusion 331 and the first protrusion 1211 are radially spaced apart from each other along the stator core 11, and the sealing ring 4 of the motor 100 is provided between the first protrusion 1211 and the second protrusion 331, and the first protrusion 1211 and the second protrusion 331 are used to provide positioning for the installation of the sealing ring 4 between the sealing strip 121 and the protrusion 33, thereby reducing the difficulty of installing the sealing ring 4 between the sealing strip 121 and the protrusion 33.

[0096] The sealing ring 4 contacts the first protrusion 1211 and the second protrusion 331, so as to form a seal between the protrusion 33 and the sealing strip 121, thereby reducing the leakage of coolant at the connection between the protrusion 33 and the sealing strip 121, reducing the impact of coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0097] Please refer to Fig.10 In another embodiment of the present application, a first protrusion 1211 is provided on the side of the sealing strip 121 facing the protrusion 33, and the first protrusion 1211 contacts the protrusion 33. A second protrusion 331 is provided on the side of the protrusion 33 facing the sealing strip 121, and the second protrusion 331 contacts the first protrusion 1211, so as to provide support for the first protrusion 1211 and improve the stability of the connection between the sealing strip 121 and the protrusion 33. The second protrusion 331 and the sealing strip 121 are arranged at intervals along the axial direction of the stator core 11, and the sealing ring 4 is arranged between the first protrusion 1211, the second protrusion 331 and the sealing strip 121, and the sealing ring 4 contacts the first protrusion 1211 and the second protrusion 331, so as to form a seal between the protrusion 33 and the sealing strip 121, thereby reducing the leakage of the coolant at the connection between the protrusion 33 and the sealing strip 121, reducing the impact of the coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0098] Please refer to Figures 11 to 14The protrusion 33 and the sealing strip 121 can also achieve sealing through a mortise and tenon structure. Specifically, in one embodiment of the present application, the sealing strip 121 is provided with a tenon portion 35, and the protrusion 33 is provided with a recessed portion 36. The tenon portion 35 of the sealing strip 121 extends into the recessed portion 36 of the protrusion 33. The recessed portion 36 can squeeze the tenon portion 35 of the sealing strip 121, thereby causing the sealing strip 121 to produce elastic deformation, thereby reducing the connection gap between the sealing strip 121 and the protrusion 33, thereby forming a seal between the protrusion 33 and the sealing strip 121, reducing the leakage of coolant at the connection between the protrusion 33 and the sealing strip 121, reducing the impact of coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0099] It can be understood that in other possible implementation modes of the present application, the sealing strip 121 may be provided with a recessed portion 36, and the protruding portion 33 may be provided with a tenon portion 35. The tenon portion 35 of the protruding portion 33 can squeeze the recessed portion 36 of the sealing strip 121, thereby reducing the connection gap between the sealing strip 121 and the protruding portion 33, reducing the leakage of coolant at the connection between the protruding portion 33 and the sealing strip 121, reducing the impact of coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0100] Please refer to Fig.11 The cross-sectional shape of the tenon portion 35 and the recessed portion 36 along the axial direction perpendicular to the stator core 11 can be set to a triangle. The triangle has stability, and the tenon portion 35 and the recessed portion 36 set in a triangle can have better connection stability.

[0101] Please refer to Fig.12 The cross-sectional shape of the tenon portion 35 and the recessed portion 36 along the axial direction perpendicular to the stator core 11 can also be set to a circle. The circular surface is smooth, which can reduce the difficulty of installing the sealing strip 121 and the protrusion 33 and improve the installation efficiency of the sealing strip 121 and the protrusion 33.

[0102] Please refer to Fig.13 The cross-sectional shape of the tenon portion 35 and the recessed portion 36 along the axial direction perpendicular to the stator core 11 can also be set to a rectangle. The rectangle has low processing difficulty and a large surface area, which can effectively reduce the processing cost of the sealing strip 121 and the protrusion 33, increase the contact surface 32 area of ​​the sealing strip 121 and the protrusion 33, and improve the sealing effect of the sealing strip 121 and the protrusion 33.

[0103] Please refer to Fig.14 The cross-sectional shape of the tenon portion 35 and the recessed portion 36 along the axial direction perpendicular to the stator core 11 can also be set to an ellipse. The ellipse can provide better adaptability for the tenon portion 35 and the recessed portion 36 during connection, reduce stress concentration, and extend the service life of the tenon portion 35 and the recessed portion 36.

[0104] In addition to the collector ring 3 extending into the stator slot 111 and connecting with the seal 12, the seal 12 can also extend out of the stator slot 111 and be sealed and connected with the collector ring 3. For details, please refer to Figures 15 to 17 In one embodiment of the present application, the seal 12 further includes a sealing ring 122, and a sealing strip 121 is disposed on one end surface of the sealing ring 122 to be connected to the sealing ring 122, and each sealing strip 121 is disposed at intervals along the circumference of the sealing ring 122. The sealing strip 121 extends into the stator slot 111 to seal the opening 112 of the stator slot 111.

[0105] The sealing ring 122 extends out of the stator slot 111 and contacts the end face of the stator core 11. The collector ring 3 is sealed and connected to the sealing ring 122. In this way, the leakage of coolant between the stator and the collector ring 3 is reduced, the impact of coolant leakage on the rotor is reduced, and the stability of the operation of the motor 100 is improved.

[0106] Please refer to Fig.18 There are many ways to seal and connect the collector ring 3 and the sealing ring 122. In one embodiment of the present application, the collector ring 3 and the sealing ring 122 are arranged at intervals along the radial direction of the stator core 11, and the sealing ring 4 of the motor 100 is arranged between the collector ring 3 and the sealing ring 122. The sealing ring 4 is in contact with the collector ring 3 and the sealing ring 122. In this way, the leakage of coolant at the connection between the sealing ring 122 and the collector ring 3 is reduced, the impact of coolant leakage on the rotor is reduced, and the stability of the operation of the motor 100 is improved.

[0107] Please refer to Fig.19 In another possible implementation of the present application, the collector ring 3 is provided with an annular protrusion 34 on the side facing the stator core 11, and the annular protrusion 34 is in contact with the stator core 11; the annular protrusion 34 and the sealing ring 122 are arranged at intervals along the radial direction of the stator core 11, and the sealing ring 4 is arranged between the annular protrusion 34 and the sealing ring 122, and is in contact with the radial outer side of the stator core 11, the annular protrusion 34 and the sealing ring 122. The annular protrusion 34 is used to provide positioning for the sealing ring 4 between the collector ring 3 and the sealing ring 122, thereby reducing the difficulty of installing the sealing ring 4 between the collector ring 3 and the sealing ring 122.

[0108] The sealing ring 4 is in contact with the stator core 11 and the annular protrusion 34, so as to form a seal between the collector ring 3 and the sealing ring 122, thereby reducing the leakage of coolant at the connection between the sealing ring 122 and the collector ring 3, reducing the impact of coolant leakage on the rotor, and improving the operating stability of the motor 100.

[0109] Please refer to Fig. 20In another possible implementation manner of the present application, an annular protrusion 34 is provided on the side of the collector ring 3 facing the stator core 11, and the annular protrusion 34 contacts the radial outer side of the sealing ring 122 to provide support for the connection between the sealing ring 122 and the collector ring 3, thereby improving the stability of the connection between the sealing ring 122 and the collector ring 3.

[0110] The annular protrusion 34 and the end surface of the stator core 11 are arranged at intervals along the axial direction of the stator core 11; the motor 100 further includes a sealing ring 4, which is arranged between the annular protrusion 34, the sealing ring 122 and the stator core 11, and the sealing ring 4 is in contact with the annular protrusion 34, the sealing ring 122 and the stator core 11. In this way, a seal is formed between the sealing ring 122 and the collector ring 3, thereby reducing the leakage of the coolant at the connection between the sealing ring 122 and the collector ring 3, reducing the impact of the coolant leakage on the rotor, and improving the stability of the operation of the motor 100.

[0111] It can be understood that all the above-mentioned sealing connection methods between the collector ring 3 and the seal 12 should be equally applicable when the stator slot 111 is a closed slot.

[0112] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0113] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A motor, characterized in that: include: a stator, wherein the stator is formed with stator slots; A winding, wherein the winding is arranged in the stator slot; as well as A collector ring is arranged on one side of the stator along the axial direction, a collector space is formed between the collector ring and the stator, and the collector ring is sealed and connected to the end surface of the stator to form a seal for the collector space.

2. The motor according to claim 1, characterized in that The collector ring has a contact surface, and the contact surface is arranged facing an end surface direction of the stator along the axial direction; The motor further comprises a sealing ring, which is arranged between the contact surface and the end surface of the stator, and the sealing ring is in contact with the contact surface and the end surface of the stator.

3. The motor according to claim 2, characterized in that The contact surface is recessed in a direction away from the stator to form a groove; The sealing ring is arranged in the groove, and the sealing ring contacts the groove wall surface of the groove and the end surface of the stator.

4. The motor according to claim 1, characterized in that The stator comprises a stator core and a sealing member, wherein the stator slot is provided in the stator core, and the stator slot is provided with an opening facing the radial inner side of the stator core; the sealing member is at least partially provided in the stator slot to seal the opening; The collector ring is in contact with an axial end surface of the stator core, and the collector ring is sealed and connected to the sealing member.

5. The motor according to claim 4, characterized in that The stator core is provided with a plurality of stator slots, the sealing member has a plurality of sealing strips, and each of the sealing strips is sealed at an opening of each of the stator slots; A plurality of protrusions are provided on the side of the collector ring facing the stator core, and the plurality of protrusions are arranged at intervals along the circumference of the collector ring; The protrusion extends into each of the stator slots along the axial direction of the stator core, and the protrusion is sealed and connected to the sealing strip.

6. The motor according to claim 5, characterized in that The protrusion and the sealing strip are arranged at intervals along the axial direction of the stator core; The motor further comprises a sealing ring, which is arranged between the protruding portion and the sealing strip, and the sealing ring contacts the protruding portion and the sealing strip to seal the protruding portion and the sealing strip.

7. The motor according to claim 5, characterized in that A first protrusion is provided on a side of the sealing strip facing the protruding portion, and the first protrusion is in contact with the protruding portion; A second protrusion is provided on the side of the protrusion facing the sealing member, and the second protrusion contacts the sealing member; the second protrusion and the first protrusion are spaced apart in the radial direction of the stator core; The motor further includes a sealing ring, which is disposed between the first protrusion and the second protrusion, and the sealing ring contacts the first protrusion and the second protrusion to seal the first protrusion and the second protrusion.

8. The motor according to claim 5, characterized in that A first protrusion is provided on a side of the sealing strip facing the protruding portion, and the first protrusion is in contact with the protruding portion; A second protrusion is provided on a side of the protrusion facing the sealing strip, the second protrusion is in contact with the first protrusion, and the second protrusion and the sealing strip are spaced apart along the axial direction of the stator core; The motor further includes a sealing ring, which is disposed between the first protrusion, the second protrusion and the sealing strip, and is in contact with the first protrusion, the second protrusion and the sealing strip.

9. The motor according to claim 5, characterized in that One of the protrusion and the sealing strip is provided with a tenon portion, and the other of the protrusion and the sealing strip is provided with a recessed portion, and the tenon portion is used to cooperate with the recessed portion to form a seal between the protrusion and the sealing member.

10. The motor according to claim 9, characterized in that The cross-sectional shape of the tenon portion along the direction perpendicular to the axial direction of the stator core includes triangle, rectangle, circle, and ellipse.

11. The motor according to claim 4, characterized in that The sealing member comprises a sealing ring and a plurality of sealing strips, wherein the plurality of sealing strips are connected to the sealing ring and the sealing strips are arranged at intervals along the circumference of the sealing ring; the sealing strips are arranged in the opening of the stator slot, and the sealing ring contacts the end surface of the stator core; The collecting ring is sealingly connected to the sealing ring.

12. The motor according to claim 11, characterized in that The collector ring and the sealing ring are arranged at intervals along the radial direction of the stator core; The motor further comprises a sealing ring, which is arranged between the collector ring and the sealing ring, and the collector ring and the sealing ring are sealed and connected via the sealing ring.

13. The motor according to claim 11, characterized in that The collector ring is provided with an annular protrusion on the side facing the stator core, and the annular protrusion is in contact with the stator core; the annular protrusion and the sealing ring are arranged at intervals along the radial direction of the stator core; The motor further comprises a sealing ring, which is arranged between the annular protrusion and the sealing ring, and the sealing ring contacts the stator core, the annular protrusion and the radial outer side of the sealing ring.

14. The motor according to claim 11, characterized in that The collector ring is provided with an annular protrusion on the side facing the stator core, and the annular protrusion contacts the radial outer side of the sealing ring; the annular protrusion and the end surface of the stator core are arranged at intervals along the axial direction of the stator core; The motor further comprises a sealing ring, which is arranged between the annular protrusion, the sealing ring and the stator core, and the sealing ring is in contact with the annular protrusion, the sealing ring and the stator core.

15. A powertrain, characterized in that: Comprising a motor as claimed in any one of claims 1 to 14.

16. A vehicle, characterized in that: Comprising the powertrain as claimed in claim 15.

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