Winding coil, stator assembly, motor and vehicle

Abstract

The invention provides a winding coil, a stator assembly, a motor and a vehicle, and belongs to the technical field of motors, the winding coil is applied to the stator assembly and comprises a coil body, and the coil body is located in a stator groove of the stator assembly; wherein the coil main body is provided with a first flow guide channel for a cooling medium to circulate. When the winding coil provided by the embodiment of the invention is applied to the stator assembly, the heat dissipation performance of the winding coil can be improved through direct contact between the cooling medium and the coil main body on the basis of not changing the structural parameters of the stator groove in the stator assembly, and the winding coil is simple in structure and relatively low in assembly difficulty.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a winding coil, a stator assembly, a motor and a vehicle. Background Art

[0002] As a core component of an electromagnetic device, windings are widely used in equipment such as motors and generators, and play a vital role. During the operation of a motor or generator, the windings will generate heat due to the passage of current. If the heat cannot be dissipated in time, the winding temperature will rise, which will cause performance degradation and even lead to winding damage.

[0003] In the related art, in order to improve the heat dissipation effect of the winding, cooling oil is usually directly introduced into the stator slots and directly cools the winding in the slots through cooling pipes. The above cooling method requires enlarging the size of the stator slots and to facilitate the circulation of the cooling oil, which will cause the structural parameters of the stator slots to change, thereby affecting the electromagnetic performance of the motor and / or generator, resulting in a decrease in the electromagnetic performance. Summary of the invention

[0004] The embodiments of the present application provide a winding coil, a stator assembly, a motor and a vehicle. When the winding coil is arranged in the stator assembly, the heat dissipation effect of the cooling medium on the winding coil can be improved without changing the structural parameters of the stator slots.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, there is provided a winding coil, which is applied to a stator assembly, and comprises a coil body, wherein the coil body is located in a stator slot of the stator assembly;

[0006] Wherein, a first flow guide channel for cooling medium to flow is arranged on the coil body.

[0007] Optionally, it further comprises a first end coil and a second end coil located at opposite ends of the coil body;

[0008] The first end coil is provided with a second flow guiding channel communicating with the first flow guiding channel, and / or the second end coil is provided with a third flow guiding channel communicating with the first flow guiding channel.

[0009] Optionally, the first flow guiding channel is a first groove opened on the coil body;

[0010] And / or, the second flow guiding channel is a second groove opened on the first end coil;

[0011] And / or, the third guide channel is a third groove opened on the second end coil.

[0012] According to a second aspect of the present application, there is also provided a stator assembly, comprising a stator core and a winding structure;

[0013] A plurality of stator slots are arranged on the inner wall of the stator core, and the plurality of stator slots are arranged along the circumferential direction of the stator core;

[0014] The winding structure is wound on the stator core through the stator slots;

[0015] The winding structure includes at least one winding coil as described above.

[0016] Optionally, the winding structure includes a plurality of winding coils, and a first flow guide channel is provided on each of the plurality of winding coils.

[0017] Optionally, the stator assembly further comprises an insulating film;

[0018] The stator core comprises a plurality of stator laminations which are sequentially arranged along the axial direction of the stator core, and the insulating film is coated on the outer circumference of the plurality of stator laminations.

[0019] Optionally, the stator core is further provided with a plurality of yoke flow channels penetrating therethrough, and the plurality of yoke flow channels are arranged along the circumferential direction of the stator core.

[0020] According to a third aspect of the present application, a motor is also provided, comprising the stator assembly as described above.

[0021] Optionally, the motor further comprises a motor housing and a motor end cover;

[0022] The motor end cover is arranged at the opening of the motor housing to form an accommodating cavity, and the stator assembly is arranged in the accommodating cavity.

[0023] Optionally, the motor further comprises a first sealing cover and a second sealing cover;

[0024] The first sealing cover and the second sealing cover are both arranged in the accommodating cavity, and the first sealing cover and the second sealing cover are respectively arranged at two opposite ends of the stator assembly in the axial direction to form a sealing cavity.

[0025] Optionally, a first spray hole is provided on the first sealing cover, and the first spray hole is used to allow the cooling medium to spray one end of the winding structure;

[0026] The second sealing cover is provided with a second spray hole, and the second spray hole is used to spray the other end of the winding structure.

[0027] Optionally, a liquid inlet and a second flow channel are provided on the motor housing;

[0028] The second flow channel is communicated with the liquid inlet, and the liquid inlet is used to allow the cooling medium to enter the second flow channel;

[0029] The second spray hole is communicated with the second flow channel.

[0030] Optionally, the first spray hole is connected to the second flow channel through a yoke flow channel in the stator assembly.

[0031] Optionally, the first sealing cover is provided with a through hole for at least part of the winding coil to pass through;

[0032] A sealing structure is arranged at the through hole to keep the sealing cavity sealed.

[0033] Optionally, the motor further comprises a rotor assembly;

[0034] The rotor assembly is movably arranged in the stator assembly, and at least a part of the rotor assembly is located in the sealed cavity.

[0035] Optionally, the rotor assembly comprises a rotor shaft;

[0036] A first bearing chamber is arranged on the motor end cover, and a second bearing chamber is arranged at one end of the motor housing away from the motor end cover;

[0037] Both ends of the rotor shaft are connected to the bearings in the first bearing chamber and the second bearing chamber respectively.

[0038] Optionally, a third flow channel is further provided in the motor housing, and the second bearing chamber is communicated with the liquid inlet through the third flow channel.

[0039] Optionally, a fourth flow channel is provided in the motor end cover, and the first bearing chamber is connected with the second flow channel through the fourth flow channel.

[0040] According to a third aspect of the present application, a vehicle is also provided, comprising the motor as described above.

[0041] The winding coil provided in the embodiment of the present application is applied to a stator assembly, and includes a coil body. The coil body is located in the stator slot of the stator assembly, and a first guide channel for the circulation of a cooling medium is provided on the coil body. By providing the first guide channel on the coil body, the cooling medium can be fully in contact with the coil body located in the stator slot, thereby improving the heat dissipation effect of the winding coil, and there is no need to change the structural parameters of the stator slot, thereby reducing the impact on the electromagnetic performance. That is, when the winding coil provided in the embodiment of the present application is applied to the stator assembly, the heat dissipation performance of the winding coil can be improved by direct contact between the cooling medium and the coil body without changing the structural parameters of the stator slot in the stator assembly, and the structure is simple and the assembly difficulty is relatively low.

[0042] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0044] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0045] Figure 1 is a schematic diagram of the structure of a winding coil provided in an embodiment of the present application;

[0046] Figure 2 It is a partial structural schematic diagram of a cross-sectional view of a stator assembly provided in an embodiment of the present application;

[0047] Figure 3 is a schematic diagram of the overall structure of a stator assembly provided in an embodiment of the present application;

[0048] Figure 4 is the cross section of the motor provided in the embodiment of the present application Figure 1 ;

[0049] Figure 5 is the cross section of the motor provided in the embodiment of the present application Figure 2 ;

[0050] Figure 6 is a schematic structural diagram of a first sealing cover provided in an embodiment of the present application;

[0051] Figure 7 It is a schematic diagram of the structure of the second sealing cover provided in an embodiment of the present application.

[0052] Description of reference numerals:

[0053] 1. stator core; 110. stator slot; 120. yoke flow channel; 11. stator lamination; 111. stator slot; 2. winding structure; 210. winding coil; 211. coil body; 2111. first flow guide channel; 2112. first groove; 212. first end coil; 2121. second flow guide channel; 2122. second groove; 213. second end coil; 2131. third flow guide channel; 2132. third groove; 3. insulation film ; 41. Motor housing; 411. Second bearing chamber; 412. Liquid inlet; 413. Second flow channel; 414. Third flow channel; 42. Motor end cover; 421. First bearing chamber; 422. Fourth flow channel; 51. First sealing cover; 511. First spray hole; 512. Sealing structure; 52. Second sealing cover; 521. Second spray hole; 6. Rotor assembly; 61. Rotor shaft; 62. Rotor laminations; 63. First magnetic isolation plate; 64. Second magnetic isolation plate. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0055] First, see Figure 1 and Figure 2 The embodiment of the present application provides a winding coil 210, which is applied to a stator assembly and includes a coil body 211, and the coil body 211 is located in a stator slot 110 of the stator assembly. The coil body 211 is provided with a first guide channel 2111 for the circulation of a cooling medium.

[0056] By setting the first flow guide channel 2111 on the coil body 211, the cooling medium can be fully in contact with the coil body 211 located in the stator slot 110, thereby improving the heat dissipation effect of the winding coil 210, and there is no need to change the structural parameters of the stator slot 110, thereby reducing the impact on the electromagnetic performance. That is, when the winding coil 210 provided in the embodiment of the present application is applied to the stator assembly, the heat dissipation performance of the winding coil 210 can be improved by direct contact between the cooling medium and the coil body 211 without changing the structural parameters of the stator slot 110 in the stator assembly, and the structure is simple and the assembly difficulty is low.

[0057] In the related art, the winding structure usually adopts a flat wire coil. When the flat wire coil is wound on the stator slot of the stator assembly, no gap can be formed between adjacent flat wire coils, which makes it difficult for the cooling medium to directly contact the flat wire coil in the stator slot. In addition, the flat wire coils are densely arranged, resulting in serious heat accumulation. In order to enable the cooling medium to contact the flat wire coil in the stator slot, it is necessary to expand the size of the stator slot and change the structural parameters of the stator slot. However, the change in the size parameters of the stator slot will affect the electromagnetic performance, which will make the electromagnetic performance unable to meet the requirements.

[0058] The winding coil 210 provided in the embodiment of the present application can provide a first guide channel 2111 to allow the cooling medium to flow, thereby allowing the coil body 211 located in the stator slot 110 to fully contact with the cooling medium. At the same time, there is no need to change the structural parameters of the stator slot 110, and the heat dissipation effect of the winding coil 210 is improved without affecting the electromagnetic performance.

[0059] In some embodiments, the winding coil 210 further includes a first end coil 212 and a second end coil 213 located at opposite ends of the coil body 211 , and the first end coil 212 is provided with a second guide channel 2121 communicating with the first guide channel 2111 .

[0060] It can be understood that in the stator assembly, the multi-turn winding coil 210 is wound in the stator slot 110. In addition to the coil body 211 located in the stator slot 110, the winding coil 210 also has a portion protruding from the stator slot 110, namely a first end coil 212 and a second end coil 213.

[0061] By also providing the second guide channel 2121 connected to the first guide channel 2111 on the first end coil 212, the cooling medium can be easily introduced into the first guide channel 2111 from the second guide channel 2121, thereby improving the flow capacity of the cooling medium and ensuring the heat dissipation effect.

[0062] In some embodiments, the second end coil 213 is provided with a third guide channel 2131 connected to the first guide channel 2111. Similarly, by also providing the third guide channel 2131 connected to the first guide channel 2111 on the second end coil 213, the flow capacity of the cooling medium in the winding coil 210 can be guaranteed, and the heat dissipation effect can be guaranteed. At the same time, each part of the winding coil 210 is provided with a guide channel, which can simplify the preparation process of the winding coil 210 and ensure the consistency of the structure.

[0063] In some embodiments, the first flow guide channel 2111 is a first groove 2112 provided on the coil body. That is, the first flow guide channel 2111 is in the form of a groove, and the first groove 2112 can simplify the preparation process. When a plurality of winding coils 210 are sequentially wound in the stator slot 110, a channel for the circulation of the cooling medium is formed between adjacent coil bodies 211, or a channel for the circulation of the cooling medium is formed between the coil body 211 and the inner wall of the stator slot 110.

[0064] In some embodiments, the second guide channel 2121 is a second groove 2122 opened on the first end coil 212. The preparation process of the second groove 2122 is relatively simple and can ensure structural strength.

[0065] In some embodiments, the third guide channel 2131 is a third groove 2132 opened on the second end coil 213. The preparation process of the third groove 2132 is relatively simple, and the first groove 2112, the second groove 2122 and the third groove 2132 can ensure the structural consistency of the winding coil 210.

[0066] In a second aspect, the present application embodiment provides a stator assembly, see Figure 2 and Figure 4 , comprising a stator core 1 and a winding structure 2. A plurality of stator slots 110 are arranged on the inner wall of the stator core 1, and the plurality of stator slots 110 are arranged along the circumferential direction of the stator core 1. The winding structure 2 is wound on the stator core 1 through the stator slots 110. The winding structure 2 comprises at least one winding coil 210 as described above.

[0067] In the stator assembly provided in the embodiment of the present application, by including at least one winding coil 210 as described above in the winding structure 2, at least one first flow guide channel can be provided in the winding structure 2, so that the cooling medium can flow through the first flow guide channel and contact the winding structure at the same time, thereby improving the heat dissipation performance of the winding structure. Since the structure of the winding coil 210 is improved, there is no need to adjust the structural parameters of the stator slot 110, which reduces the impact on the electromagnetic performance, has a simple structure, and is less difficult to assemble.

[0068] In some embodiments, the winding structure 2 includes a plurality of winding coils 210, and a first guide channel is provided on each of the plurality of winding coils 210. By providing the plurality of winding coils 210 in the winding structure 2 with the first guide channel, the contact effect between the cooling medium and the winding coils 210 can be ensured, the heat dissipation effect of the winding coils 210 can be improved, and the heat dissipation stability of the stator assembly can be ensured.

[0069] In some embodiments, see Figure 3The stator assembly further includes an insulating film 3. The stator core 1 includes a plurality of stator laminations 11 arranged in sequence along the axial direction of the stator core 1, and the insulating film 3 is coated on the outer circumference of the plurality of stator laminations 11. By coating the insulating film 3 on the outer circumference of the plurality of stator laminations 11, the pores between adjacent stator laminations 11 can be sealed, the phenomenon of cooling medium leaking from the pores between adjacent stator laminations 11 is reduced, the loss of cooling medium is reduced, and the heat dissipation stability is ensured.

[0070] In some embodiments, a stator slot 111 is disposed on each stator lamination 11 , so that a plurality of stator laminations 11 are arranged in sequence to form a stator slot 110 .

[0071] By having the stator core 1 include a plurality of stator laminations 11, the production flexibility of the stator core 1 can be improved, and the number and thickness of the stator laminations 11 can be adjusted as needed to obtain a stator core 1 that meets the requirements. In addition, when the stator laminations 11 are assembled into the stator core 1, there will be a certain gap between adjacent stator laminations 11, which improves the heat dissipation effect of the stator core 1. When some of the stator laminations 11 in the stator core 1 fail or are damaged, they can be replaced separately, reducing maintenance costs. Each stator lamination 11 is provided with a stator slot 111, and when the stator laminations 11 are assembled into the stator core 1, the stator slots 111 can form stator slots 110.

[0072] In some embodiments, see Figure 1 and Figure 4 The stator core 1 is also provided with a plurality of yoke flow channels 120 penetrating therethrough, and the plurality of yoke flow channels 120 are arranged along the circumferential direction of the stator core 1 .

[0073] The yoke flow channel 120 refers to a channel designed at the yoke of the stator core 1, which can penetrate the stator core 1 to facilitate the cooling medium to flow from one end of the stator core 1 to the other end. During the operation of the motor, the stator core 1 will also generate a large amount of heat. If the heat cannot be dissipated in time, it will cause the temperature of the motor to rise, thereby affecting the performance and life of the motor. The cooling medium can circulate inside the stator core 1 through the yoke flow channel 120, thereby taking away the heat generated by the stator core 1 and improving the heat dissipation effect on the stator core 1. In addition, the yoke flow channel 120 can also optimize the electromagnetic performance, improve the magnetic field distribution, and by optimizing the layout and size of the yoke flow channel 120, the magnetic material is more evenly distributed in the motor, thereby improving the utilization rate of the material.

[0074] In a third aspect, an embodiment of the present application further provides a motor, comprising the stator assembly as described above.

[0075] The motor provided in the embodiment of the present application has all the advantages of the stator assembly as described above, which will not be elaborated here.

[0076] In some embodiments, see Figure 4 and Figure 5 The motor further includes a motor housing 41 and a motor end cover 42. The motor end cover 42 is disposed at the opening of the motor housing 41 to form an accommodating cavity, and the stator assembly is disposed in the accommodating cavity.

[0077] The motor housing 41 and the motor end cover 42 cooperate to form a housing cavity for accommodating the stator assembly, which can protect the stator assembly and reduce external influences. At the same time, it can provide space for the cooling medium, and reduce the loss of the cooling medium while dissipating the heat of the stator assembly.

[0078] In some embodiments, see Figure 4 and Figure 5 The motor further comprises a first sealing cover 51 and a second sealing cover 52. The first sealing cover 51 and the second sealing cover 52 are both disposed in the accommodating cavity, and the first sealing cover 51 and the second sealing cover 52 are respectively disposed at opposite ends of the stator assembly in the axial direction to form a sealed cavity.

[0079] The sealed cavity formed by the first sealing cover 51 and the second sealing cover 52 can seal at least a portion of the winding structure 2 in the sealed cavity, so that the cooling medium can immerse at least a portion of the winding structure 2 and the stator core 1, thereby ensuring the heat dissipation effect on the stator assembly while preventing the cooling medium from leaking to other positions in the accommodating cavity, thereby improving the insulation performance of the motor.

[0080] In some embodiments, see Figure 6 and Figure 7 The first sealing cover 51 is provided with a first spray hole 511, which is used to spray the cooling medium on one end of the winding structure 2. The second sealing cover 52 is provided with a second spray hole 521, which is used to spray the other end of the winding structure 2.

[0081] The winding coil 210 is wound on the stator core 1 to form a winding structure 2 . The winding structure 2 includes a winding body located in the stator slot 110 , and a first end winding and a second end winding located at opposite ends of the stator core 1 in the axial direction.

[0082] Among them, the first spray hole 511 provided on the first sealing cover 51 can enable the cooling medium to spray the first end winding to cool the first end winding. Correspondingly, the second spray hole 521 provided on the second sealing cover 52 can enable the cooling medium to spray the second end winding to cool the second end winding. In addition, the first guide channel 2111 can facilitate the circulation of the cooling medium in the stator slot 110, so that the cooling medium is in direct contact with the winding body, thereby improving the heat dissipation effect on the winding body. Therefore, in the embodiment of the present application, the first spray hole 511 on the first sealing cover 51, the second spray hole 521 on the second sealing cover 52, and the first guide channel 2111 cooperate with each other, thereby increasing the contact area between the cooling medium and the winding structure 2 and ensuring the heat dissipation effect on the winding structure 2.

[0083] In some embodiments, see Figure 4 and Figure 5 The motor housing 41 is provided with a liquid inlet 412 and a second flow channel 413 . The liquid inlet 412 is used for the cooling medium to enter, and the second flow channel 413 is communicated with the liquid inlet 412 . The second spray hole 521 is communicated with the second flow channel 413 .

[0084] The cooling medium enters the motor from the liquid inlet 412 , and the second spray hole 521 is connected to the liquid inlet 412 through the second flow channel 413 , so that the cooling medium can be sprayed through the second flow channel 413 and the second spray hole 521 in turn, thereby allowing the cooling medium to cool down one end of the winding structure 2 .

[0085] In some embodiments, the first spray hole 511 is connected to the second flow channel 413 through the yoke flow channel 120 in the stator assembly.

[0086] The cooling medium entering the motor through the liquid inlet 412 can be connected to the first spray hole 511 through the second flow channel 413 and the yoke flow channel 120 , so that the cooling medium cools the other end of the winding structure 2 .

[0087] It can be understood that, since the first sealing cover 51, the second sealing cover 52 and the stator assembly form a sealed cavity, the cooling medium can be sealed inside the stator assembly, immersing the stator core 1 and the winding structure 2, thereby improving the heat exchange effect. In addition, since the first guide channel 2111 is provided on the winding coil 210 of the winding structure 2, it is convenient for the cooling medium in the sealed cavity to flow along the first guide channel 2111 and fully contact with the winding coil 210, thereby improving the heat dissipation effect of the winding structure 2.

[0088] In some embodiments, see Figure 6 The first sealing cover 51 is provided with a through hole for at least part of the winding coil 210 to pass through, and a sealing structure 512 is provided at the through hole to keep the sealed cavity sealed.

[0089] The winding structure 2 in the motor needs to be connected to the control circuit, so that at least part of the winding coil 210 needs to pass through the first sealing cover 51. In order to ensure that the sealing performance in the sealed cavity is not affected when the winding coil 210 passes through the first sealing cover 51, a sealing structure 512 is provided at the through hole of the first sealing cover 51 for the winding coil 210 to pass through.

[0090] In some embodiments, see Figure 4 and Figure 5 The motor further comprises a rotor assembly 6. The rotor assembly 6 is movably arranged in the stator assembly, and at least a part of the rotor assembly 6 is located in the sealed cavity.

[0091] By locating at least part of the rotor assembly 6 in the sealed cavity, the cooling medium in the sealed cavity can cool at least part of the rotor assembly 6, thereby improving the heat dissipation effect of the motor and reducing the poor motor stability and cooling medium loss caused by cooling medium leakage.

[0092] In some implementations, see Figure 4 and Figure 5 The rotor assembly 6 includes a rotor shaft 61. The motor end cover 42 is provided with a first bearing chamber 421, and the motor housing 41 is provided with a second bearing chamber 411 at one end away from the motor end cover 42. Both ends of the rotor shaft 61 are connected to the bearings in the first bearing chamber 421 and the second bearing chamber 411, respectively.

[0093] The two ends of the rotor shaft 61 are connected to the bearings in the first bearing chamber 421 and the second bearing chamber 411 respectively, which helps to realize the rotation of the rotor. During the operation of the motor, the rotor shaft 61 rotates continuously, thereby generating more heat in the first bearing chamber 421 and the second bearing chamber 411. The first bearing chamber 421 and the second bearing chamber 411 can seal the two ends of the rotor shaft 61, thereby facilitating the cooling and heat dissipation of the bearings in the first bearing chamber 421 and the second bearing chamber 411 through the cooling medium.

[0094] In some embodiments, see Figure 4 and Figure 5 The motor housing 41 is also provided with a third flow channel 414, and the second bearing chamber 411 is connected to the liquid inlet 412 through the third flow channel 414. The cooling medium can enter the second bearing chamber 411 through the third flow channel 414, thereby cooling the second bearing chamber 411.

[0095] In some embodiments, see Figure 4 and Figure 5The motor end cover 42 is provided with a fourth flow channel 422, and the first bearing chamber 421 is connected to the second flow channel 413 through the fourth flow channel 422. The first bearing chamber 421 can be connected to the liquid inlet 412 through the fourth flow channel 422 and the second flow channel 413, so that the cooling medium enters the first bearing chamber 421 to cool the first bearing chamber 421.

[0096] In some embodiments, see Figure 4 and Figure 5 The rotor assembly 6 further includes a plurality of rotor laminations 62. The plurality of rotor laminations 62 are sleeved on the rotor shaft 61 and arranged in sequence along the axial direction of the rotor shaft 61. The rotor laminations 62 are disposed in the sealed cavity.

[0097] The stacking of multiple rotor laminations 62 can improve the magnetic flux flow path of the rotor assembly 6, improve the magnetic field strength of the rotor assembly 6, strengthen the constraint effect of the magnetic field on the rotor assembly 6, make it faster and have a shorter response time, and improve the output power and efficiency of the motor. In addition, the rotor assembly 6 formed by the rotor laminations 62 has higher rigidity.

[0098] The rotor laminations 62 are arranged in the sealed cavity, and the cooling medium in the sealed cavity can dissipate heat from the rotor laminations 62, thereby improving the heat dissipation performance of the motor.

[0099] In some embodiments, see Figure 4 and Figure 5 The rotor assembly 6 further includes a first magnetic isolation plate 63 and a second magnetic isolation plate 64. The first magnetic isolation plate 63 and the second magnetic isolation plate 64 are sleeved on the rotor shaft 61, and a plurality of rotor laminations 62 are sandwiched between the first magnetic isolation plate 63 and the second magnetic isolation plate 64.

[0100] By sandwiching a plurality of rotor laminations between the first magnetic shielding plate 63 and the second magnetic shielding plate 64, magnetic field leakage can be reduced, which helps to improve the accuracy of magnetic field control and ensure the stability of the motor. The first magnetic shielding plate 63 and the second magnetic shielding plate 64 can also improve the structural stability of the rotor assembly 6.

[0101] For example, see Figure 5, the flow path of the cooling medium in the motor provided by the embodiment of the present application may include: the cooling medium enters the motor from the liquid inlet 412, and one path enters the second flow channel 413 in the motor housing 41. A part of the cooling medium in the second flow channel 413 enters the first bearing chamber 421 through the fourth flow channel 422 to cool the first bearing chamber 421. A part of the cooling medium in the second flow channel 413 sprays and cools the winding structure 2 at one end of the second sealing cover 52 through the second spray hole 521 on the second sealing cover 52, and the cooling medium after spraying can immerse the winding structure 2 to achieve cooling. Another part of the cooling medium in the second flow channel 413 sprays and cools the winding structure 2 at one end of the first sealing cover 51 through the yoke flow channel 120 and the first spray hole 511, and the cooling medium after spraying can immerse the winding structure 2, and can fully contact the winding coil 210210 located in the stator slot 110 through the first guide channel 2111, and then flow out from the second sealing cover 52. in, Figure 5 The dashed arrows in the middle indicate the flow path of the cooling medium in the motor.

[0102] In a fourth aspect, an embodiment of the present application also provides a vehicle, comprising the motor as described above.

[0103] The vehicle provided in the embodiment of the present application has all the beneficial effects of the motor as described above, which will not be repeated here.

[0104] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0105] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0107] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A winding coil, applied to a stator assembly, characterized in that: comprising a coil body, the coil body being located in a stator slot of the stator assembly; Wherein, the coil body is provided with a first guide channel for the circulation of cooling medium.

2. The winding coil according to claim 1, characterized in that: Also included are a first end coil and a second end coil located at opposite ends of the coil body; The first end coil is provided with a second flow guiding channel connected with the first flow guiding channel, and / or the second end coil is provided with a third flow guiding channel connected with the first flow guiding channel.

3. The winding coil according to claim 2, characterized in that: The first flow guiding channel is a first groove opened on the coil body; And / or, the second flow guiding channel is a second groove opened on the first end coil; And / or, the third guide channel is a third guide groove opened on the second end coil.

4. A stator assembly, characterized in that: including a stator core and a winding structure; A plurality of stator slots are arranged on the inner wall of the stator core, and the plurality of stator slots are arranged along the circumferential direction of the stator core; The winding structure is wound on the stator core through the stator slots; Wherein, the winding structure comprises at least one winding coil as described in any one of claims 1-3.

5. The stator assembly according to claim 4, characterized in that The winding structure comprises a plurality of winding coils, and each of the plurality of winding coils is provided with a first flow guiding channel.

6. The stator assembly according to claim 4, characterized in that Also includes an insulating film; The stator core includes a plurality of stator laminations arranged in sequence along the axial direction of the stator core, and the insulating film is coated on the outer circumference of the plurality of stator laminations.

7. The stator assembly according to claim 4, characterized in that: The stator core is also provided with a plurality of yoke flow channels penetrating therethrough, and the plurality of yoke flow channels are arranged along the circumferential direction of the stator core.

8. A motor, characterized in that: Comprising a stator assembly as claimed in any one of claims 4 to 7.

9. The motor according to claim 8, characterized in that Also includes a motor housing and a motor end cover; The motor end cover is arranged at the opening of the motor housing to form an accommodating cavity, and the stator assembly is arranged in the accommodating cavity.

10. The motor according to claim 9, characterized in that Also includes a first sealing cover and a second sealing cover; The first sealing cover and the second sealing cover are both disposed in the accommodating cavity, and the first sealing cover and the second sealing cover are respectively disposed at two opposite ends of the stator assembly in the axial direction to form a sealing cavity.

11. The motor according to claim 10, characterized in that The first sealing cover is provided with a first spray hole, and the first spray hole is used to allow the cooling medium to spray one end of the winding structure; The second sealing cover is provided with a second spray hole, and the second spray hole is used to spray the other end of the winding structure.

12. The motor according to claim 11, characterized in that The motor housing is provided with a liquid inlet and a second flow channel; The second flow channel is in communication with the liquid inlet, and the liquid inlet is used to allow the cooling medium to enter the second flow channel; The second spray hole is communicated with the second flow channel.

13. The motor according to claim 12, characterized in that The first spray hole is communicated with the second flow channel through a yoke flow channel in the stator assembly.

14. The motor according to claim 10, characterized in that The first sealing cover is provided with a through hole for at least part of the winding coil to pass through; A sealing structure is provided at the through hole to keep the sealed cavity sealed.

15. The motor according to claim 12, characterized in that Also included is a rotor assembly; The rotor assembly is movably arranged in the stator assembly, and at least a part of the rotor assembly is located in the sealed cavity.

16. The motor according to claim 15, characterized in that The rotor assembly includes a rotor shaft; The motor end cover is provided with a first bearing chamber, and an end of the motor housing away from the motor end cover is provided with a second bearing chamber; Both ends of the rotor shaft are connected to the bearings in the first bearing chamber and the second bearing chamber respectively.

17. The electric machine according to claim 16, characterized in that A third flow channel is also provided in the motor housing, and the second bearing chamber is communicated with the liquid inlet through the third flow channel.

18. The motor according to claim 16, characterized in that A fourth flow channel is provided in the motor end cover, and the first bearing chamber is communicated with the second flow channel through the fourth flow channel.

19. A vehicle, characterized in that: Comprising a motor as described in any one of claims 8-18.

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