Rotor structure and vehicle with same

Abstract

The invention provides a rotor structure and a vehicle with the same, and relates to the technical field of vehicles, in particular, the rotor structure comprises a rotor core assembly, the rotor core assembly comprises a plurality of rotor cores and a rotor shaft, the plurality of rotor cores are arranged along the axial direction of the rotor shaft, and each rotor core is provided with a magnetic steel groove group; the diversion assembly is connected with the rotor shaft, part of the diversion assembly is arranged between at least two adjacent rotor cores, the other part of the diversion assembly is arranged at two ends of the rotor core assembly in the axial direction, the diversion assembly is provided with a diversion channel, and the magnetic steel groove groups of the at least two adjacent rotor cores are communicated with the diversion channel. By applying the technical scheme of the invention, the technical problem of poor injection molding effect of the magnetic steel groove caused by insufficient lap joint area or no lap joint between sections of the magnetic steel groove in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a rotor structure and a vehicle having the same. Background Technology

[0002] In the drive systems of new energy vehicles, permanent magnet synchronous motors are widely used due to their high efficiency, high power density, and excellent control performance. The motor rotor is a crucial component of the motor, and its performance directly impacts the overall performance of the motor. In particular, under high-speed, high-intensity operating conditions, rotor stability, NVH (noise, vibration, and harshness) performance, and temperature rise control are key considerations. The rotor consists of an iron core and magnets, where the magnets are the main component generating the magnetic field, while the iron core provides support and magnetic conduction. To ensure a strong bond between the magnets and the iron core and improve the overall performance of the rotor, the magnet fixing method requires special design. Currently, mainstream fixing processes include glue injection fixing, spring clip fixing, riveting fixing, expansion coating fixing, and injection molding fixing. Among these, injection molding fixing, especially integral injection molding, is favored because it provides high mechanical strength, high NVH performance, and production efficiency.

[0003] Despite the significant advantages of the overall injection molding process, the overlap area between the rotor core magnet slots has a crucial impact on injection flow and the final injection effect. Driven by the pursuit of higher NVH performance, adjacent core segments are rotated at a certain angle to form a V-shaped skewed pole to optimize the magnetic circuit and reduce noise. However, this V-shaped skewed pole design reduces the overlap area between the rotor core magnet slots, or even eliminates it entirely. When the overlap area between magnet slots is insufficient or nonexistent, the flow of injection molding material between the rotor core segments is hindered, potentially preventing the complete filling of all magnet slots. This leads to a decrease in magnet fixation strength, affecting the rotor's dynamic balance and NVH performance.

[0004] Currently, no effective solution has been proposed to address the above issues. Summary of the Invention

[0005] The main objective of this application is to provide a rotor structure and a vehicle having the same, in order to solve the technical problem of poor injection molding effect of the magnet slot due to insufficient or no overlap between magnet slot segments in the prior art.

[0006] To achieve the above objectives, according to one aspect of this application, a rotor structure is provided, comprising: a rotor core assembly, the rotor core assembly including a plurality of rotor cores and a rotor shaft, the plurality of rotor cores being arranged along the axial direction of the rotor shaft, the rotor cores having magnetic slot groups; and a flow guiding assembly connected to the rotor shaft, a portion of the flow guiding assembly being disposed between at least two adjacent rotor cores, and another portion of the flow guiding assembly being disposed at both ends in the axial direction of the rotor core assembly, the flow guiding assembly having a flow guiding channel, the magnetic slot groups of at least two adjacent rotor cores being arranged in communication with the flow guiding channel.

[0007] Furthermore, the magnet slot assembly includes an outer magnet slot assembly and an inner magnet slot assembly, which are arranged sequentially along the circumferential direction of the rotor core. The flow guiding assembly includes a flow guiding plate, which is disposed between at least two adjacent rotor cores. The flow guiding channels include: an outer magnet slot flow guiding channel, which is disposed on the flow guiding plate, and the outer magnet slot assemblies of adjacent rotor cores are all connected to the outer magnet slot flow guiding channel. There are multiple sets of outer magnet slot flow guiding channels, which are arranged at intervals along the circumferential direction of the flow guiding plate; and an inner magnet slot flow guiding channel, which is disposed on the flow guiding plate, and the inner magnet slot assemblies of adjacent rotor cores are connected to the inner magnet slot flow guiding channel. There are multiple sets of inner magnet slot flow guiding channels, which are arranged at intervals along the circumferential direction of the flow guiding plate.

[0008] Furthermore, the outer magnet slot assembly includes a first outer magnet slot and a second outer magnet slot disposed on one of the adjacent rotor cores, and a third outer magnet slot and a fourth outer magnet slot disposed on the other of the adjacent rotor cores. The first outer magnet slot and the second outer magnet slot are symmetrically arranged, and the third outer magnet slot and the fourth outer magnet slot are symmetrically arranged. The outer magnet slot guide channel includes: a first outer magnet slot guide channel disposed on a guide plate, and the first outer magnet slot guide channel and the first outer magnet slot... The first end of the first outer magnet groove is connected, and the first end of the third outer magnet groove is connected; the second outer magnet groove is provided on the guide plate, and the second outer magnet groove is provided at intervals with the first outer magnet groove along the circumference of the guide plate, and the second outer magnet groove is provided opposite to the first outer magnet groove, and the second outer magnet groove is connected to the first end of the second outer magnet groove, and the first outer magnet groove is connected to the first end of the fourth outer magnet groove.

[0009] Furthermore, the outer magnet trough guide channel also includes: a third outer magnet trough guide channel, which is disposed on the guide plate and located between the first and second outer magnet trough guide channels. The third outer magnet trough guide channel is connected to the second end of the first outer magnet trough, the second end of the second outer magnet trough, and the second end of the third outer magnet trough.

[0010] Furthermore, the inner magnetic slot assembly includes a first inner magnetic slot and a second inner magnetic slot disposed on one of the adjacent rotor cores, and a third inner magnetic slot and a fourth inner magnetic slot disposed on the other of the adjacent rotor cores. The inner magnetic slot guide channel includes: a first inner magnetic slot guide channel disposed on a guide plate, the first inner magnetic slot guide channel being disposed on the side of the first outer magnetic slot guide channel away from the second outer magnetic slot guide channel, and the first inner magnetic slot guide channel being connected to the first inner magnetic slot's third inner magnetic slot guide channel. One end is connected, and the first end of the first inner magnet groove guide channel is connected to the first end of the third inner magnet groove; the second inner magnet groove guide channel is set on the guide plate, and the second inner magnet groove guide channel is set on the side of the second outer magnet groove guide channel away from the first outer magnet groove guide channel. The second inner magnet groove guide channel is set opposite to the first inner magnet groove guide channel, and the second inner magnet groove guide channel is connected to the first end of the second inner magnet groove. The first inner magnet groove guide channel is connected to the first end of the fourth inner magnet groove.

[0011] Furthermore, the inner magnet groove guide channel also includes: a third inner magnet groove guide channel, which is disposed on the guide plate and located between the first and second inner magnet groove guide channels. The third inner magnet groove guide channel is connected to the second end of the first inner magnet groove, the second inner magnet groove guide channel, and the second end of the fourth inner magnet groove. Furthermore, the first outer magnet groove guide channel is disposed adjacent to the first inner magnet groove guide channel, and / or the second outer magnet groove guide channel is disposed adjacent to the second inner magnet groove guide channel, and / or the third inner magnet groove guide channel and the third outer magnet groove guide channel are sequentially disposed along the circumferential direction of the guide plate.

[0012] Furthermore, the rotor structure includes a coolant flow channel, part of which is formed on the rotor shaft and another part of which is formed on the guide assembly. The guide assembly further includes: a guide pipe connected to a guide plate, the guide pipe extending along the axial direction of the rotor core and adjacent to the guide channel; and two balance plates, which are arranged opposite to each other at both ends of the rotor core assembly in the axial direction. The balance plates are provided with a cooling channel and an oil collection tank. The guide pipe is connected to the cooling channel, forming part of the coolant flow channel. The oil collection tank is connected to the coolant flow channel through an outlet.

[0013] Furthermore, the cooling channels include: a first cooling channel, which is connected to the shaft hole of the balance plate, and the other end of the first cooling channel extends along the circumferential direction of the balance plate; a second cooling channel, one end of which is connected to the first cooling channel, and the other end of which extends away from the first cooling channel along the circumferential direction of the balance plate, with the length direction of the second cooling channel at an angle to the length direction of the first cooling channel; there are two second cooling channels, which are symmetrically arranged about the first cooling channel; the second cooling channels are correspondingly arranged with the inner layer magnet slot group; and a third cooling channel, one end of which is connected to the end of the first cooling channel away from the shaft hole of the balance plate, and the other end of which extends away from the first cooling channel along the circumferential direction of the balance plate, with the length direction of the third cooling channel at an angle to the length direction of the first cooling channel; there are two third cooling channels, which are symmetrically arranged about the first cooling channel; the third cooling channels are correspondingly arranged with the outer layer magnet slot group.

[0014] Furthermore, there are multiple sets of cooling channels and multiple oil collection tanks. The multiple sets of cooling channels are arranged at intervals along the circumference of the shaft hole of the balance plate, and the multiple oil collection tanks are arranged at intervals along the circumference of the shaft hole of the balance plate. The cooling channels and oil collection tanks are arranged alternately, and the liquid outlet is located on the side of the oil collection tank away from the shaft hole of the balance plate.

[0015] Furthermore, the guide plate includes: a guide plate unit, the guide plate unit being provided with a flow guiding channel, a groove being provided on one side of the guide plate unit, the groove being disposed adjacent to the flow guiding channel, and the other side of the guide plate unit being connected to a flow guiding pipe, the flow guiding pipe being disposed in communication with the groove; wherein, there are two guide plate units, the side of one of the two guide plate units with a groove is connected to the side of the other of the two guide plate units with a groove, and the grooves of the two guide plate units are disposed in communication.

[0016] Furthermore, there are multiple grooves and multiple flow channels, with each groove corresponding to a flow channel.

[0017] According to another aspect of this application, a vehicle is provided, including a rotor structure, the rotor structure being the rotor structure described above.

[0018] By applying the technical solution of this application, the flow-guiding components (especially their flow-guiding channels) effectively solve the flow problem of the injection molding material between the rotor core. Even when the overlap area of ​​the magnet slot group is insufficient, the injection molding material can flow smoothly through the structure connected by the flow-guiding channels, ensuring the complete filling of the magnet slot group. This enhances the bonding strength between the magnet and the core, improves the overall mechanical performance of the rotor, and solves the technical problem of poor injection molding effect of the magnet slot due to insufficient or no overlap between the magnet slot segments in the prior art. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 A schematic diagram of a first embodiment of the rotor structure according to this application is shown; Figure 2 A schematic diagram of a second embodiment of the rotor structure according to this application is shown; Figure 3 An enlarged view of point A in a second embodiment of the rotor structure according to this application is shown; Figure 4 A schematic diagram of a third embodiment of the rotor structure according to this application is shown; Figure 5 An enlarged view of point B is shown in the third embodiment of the rotor structure according to this application; Figure 6 A schematic diagram of a fourth embodiment of the rotor structure according to this application is shown; Figure 7 An enlarged view of point C is shown in the fourth embodiment of the rotor structure according to this application; Figure 8 A schematic diagram of a fifth embodiment of the rotor structure according to this application is shown; Figure 9 A schematic diagram of a sixth embodiment of the rotor structure according to this application is shown; Figure 10 A schematic diagram of a seventh embodiment of the rotor structure according to this application is shown; Figure 11 A schematic diagram of the eighth embodiment of the rotor structure according to this application is shown; Figure 12 A schematic diagram of a ninth embodiment of the rotor structure according to this application is shown; Figure 13An enlarged view of point D is shown in the ninth embodiment of the rotor structure according to this application; Figure 14 A schematic diagram of a tenth embodiment of the rotor structure according to this application is shown; Figure 15 A schematic diagram of the eleventh embodiment of the rotor structure according to this application is shown.

[0020] The above figures include the following reference numerals: 10. Rotor core assembly; 11. Rotor core; 1101. First rotor core; 1102. Second rotor core; 110. Magnet slot assembly; 111. Outer magnet slot assembly; 1111. First outer magnet slot; 1112. Second outer magnet slot; 1113. Third outer magnet slot; 1114. Fourth outer magnet slot; 112. Inner magnet slot assembly; 1121. First inner magnet slot; 1122. Second inner magnet slot; 1123. Third inner magnet slot; 1124. Fourth inner magnet slot; 12. Rotor shaft; 20. Flow guiding assembly; 21. Flow guiding plate; 210. Flow guiding plate unit; 211. Groove; 22. Flow guiding channel; 221. Outer magnet groove flow guiding channel; 2211. First outer magnet groove flow guiding channel; 2212. Second outer magnet groove flow guiding channel; 2213. Third outer magnet groove flow guiding channel; 222. Inner magnet groove flow guiding channel; 2221. First inner magnet groove flow guiding channel; 2222. Second inner magnet groove flow guiding channel; 2223. Third inner magnet groove flow guiding channel; 23. Flow guiding pipe; 24. Balance plate; 241. Cooling channel; 2411. First cooling channel; 2412. Second cooling channel; 2413. Third cooling channel; 242. Oil collection tank; 2421. Liquid outlet;

[0021] 30. Coolant flow path. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0026] The overlap area between the magnet slots of the rotor core has a crucial impact on injection molding flow and effect. Driven by the pursuit of higher NVH performance, adjacent core segments are rotated at a certain angle to form a V-shaped skewed pole to optimize the magnetic circuit and reduce noise. However, this V-shaped skewed pole design leads to a reduction in the overlap area between the magnet slots of the rotor core, or even no overlap at all. This directly affects the flow and reliability of the overall injection molding process, specifically: 1) Reduced flow: Insufficient or no overlap between magnet slot segments obstructs the flow of injection molding material between rotor core segments, potentially preventing the smooth filling of all magnet slots, resulting in a decrease in magnet fixing strength and affecting the rotor's dynamic balance and NVH performance. 2) Cooling efficiency issues: Under the condition of integral injection molding to fix the magnets, the magnet slots are tightly wrapped by the injection molding material, which limits the direct cooling of the magnets. Especially during high-speed operation, the large amount of heat generated by the magnets is not easily dissipated, posing a risk of high-temperature failure and affecting the long-term stability and efficiency of the motor. Therefore, existing technologies exist on how to optimize the overall injection molding process to improve the fixing strength of the magnets when the overlap area between magnet slot segments is insufficient or non-overlapping, while simultaneously solving the problem of efficient cooling of the magnets during high-speed operation.

[0027] Combination Figures 1 to 15 In a specific embodiment of this application, a rotor structure is provided.

[0028] Specifically, the rotor structure includes a rotor core assembly 10 and a flow guiding assembly 20. The rotor core assembly 10 includes multiple rotor cores 11 and a rotor shaft 12. There are multiple rotor cores 11, which are arranged along the axial direction of the rotor shaft 12. Each rotor core 11 has a magnetic slot group 110. The flow guiding assembly 20 is connected to the rotor shaft 12. Some of the flow guiding assemblies 20 are arranged between at least two adjacent rotor cores 11, and other flow guiding assemblies 20 are arranged at both ends in the axial direction of the rotor core assembly 10. The flow guiding assembly 20 has a flow guiding channel 22, and the magnetic slot groups 110 of at least two adjacent rotor cores 11 are arranged in communication with the flow guiding channel 22.

[0029] By applying the technical solution of this application, the flow guiding component 20 (especially its flow guiding channel 22) effectively solves the flow problem of the injection molding material between the rotor core 11. Even when the overlap area of ​​the magnet slot group 110 is insufficient, the injection molding material can still flow smoothly through the structure connected by the flow guiding channel 22, ensuring the complete filling of the magnet slot group 110. This enhances the bonding strength between the magnet and the core, improves the overall mechanical performance of the rotor, and solves the technical problem of poor injection molding effect of the magnet slot due to insufficient or no overlap between the magnet slot segments in the prior art.

[0030] Furthermore, part of the flow guiding component 20 (flow guiding channel 22) is used to guide the injection molding material, while another part of the flow guiding component 20 is used to guide the coolant. The flow guiding component 20 not only optimizes the injection molding process, but its other part of the flow guiding channel 22 (for guiding coolant) can also directly contact the magnet slot assembly 110, achieving effective cooling of the magnets. Under integral injection molding conditions, this cooling mechanism significantly reduces the temperature of the magnets during high-speed operation, reduces the risk of magnet failure due to overheating, and enhances the long-term stability and operating efficiency of the motor.

[0031] Furthermore, the magnet slot assembly 110 includes an outer magnet slot assembly 111 and an inner magnet slot assembly 112, which are arranged sequentially along the circumferential direction of the rotor core 11. The flow guiding assembly 20 includes a flow guiding plate 21, which is disposed between at least two adjacent rotor cores 11. The flow guiding channel 22 includes an outer magnet slot flow guiding channel 221 and an inner magnet slot flow guiding channel 222, with the outer magnet slot flow guiding channel 221 disposed on the flow guiding plate 21. Adjacent rotor cores... The outer magnetic steel groove groups 111 of the rotor core 11 are all connected to the outer magnetic steel groove guide channels 221. There are multiple groups of outer magnetic steel groove guide channels 221, which are arranged at intervals along the circumference of the guide plate 21. The inner magnetic steel groove guide channels 222 are arranged on the guide plate 21. The inner magnetic steel groove groups 112 of the adjacent rotor core 11 are connected to the inner magnetic steel groove guide channels 222. There are multiple groups of inner magnetic steel groove guide channels 222, which are arranged at intervals along the circumference of the guide plate 21.

[0032] In this embodiment, by setting multiple sets of outer magnet slot guide channels 221 between the outer magnet slot groups 111, the flowability of the injection molding material between the outer magnet slots of adjacent rotor cores 11 is significantly improved. The introduction of inner magnet slot guide channels 222 solves the problem of injection molding flowability between the inner magnet slot groups 112. Even when the overlap area of ​​the outer magnet slots is reduced due to the V-shaped slanted pole design, the injection molding material can still be evenly distributed through these guide channels 22, ensuring effective filling of the outer magnet slots and enhancing the bonding strength between the outer magnets and the core. The multiple sets of guide channels 22 are spaced apart circumferentially along the guide plate 21, ensuring that the injection molding material in the inner magnet slots can flow smoothly, achieving full filling and reinforcing the fixing effect of the inner magnets.

[0033] Further, the outer magnet slot group 111 includes a first outer magnet slot 1111 and a second outer magnet slot 1112 disposed on one of the adjacent rotor cores 11, and a third outer magnet slot 1113 and a fourth outer magnet slot 1114 disposed on the other of the adjacent rotor cores 11. The first outer magnet slot 1111 and the second outer magnet slot 1112 are symmetrically arranged, and the third outer magnet slot 1113 and the fourth outer magnet slot 1114 are symmetrically arranged. The outer magnet slot guide channel 221 includes a first outer magnet slot guide channel 2211 and a second outer magnet slot guide channel 2212. The first outer magnet slot guide channel 2211 is disposed on the guide plate 21. The flow guiding channel 2211 is connected to the first end of the first outer magnet groove 1111, and the first outer magnet groove flow guiding channel 2211 is connected to the first end of the third outer magnet groove 1113; the second outer magnet groove flow guiding channel 2212 is disposed on the flow guiding plate 21, and the second outer magnet groove flow guiding channel 2212 and the first outer magnet groove flow guiding channel 2211 are disposed at intervals along the circumference of the flow guiding plate 21, and the second outer magnet groove flow guiding channel 2212 and the first outer magnet groove flow guiding channel 2211 are disposed opposite to each other, the second outer magnet groove flow guiding channel 2212 is connected to the first end of the second outer magnet groove 1112, and the first outer magnet groove flow guiding channel 2211 is connected to the first end of the fourth outer magnet groove 1114.

[0034] Combination Figure 7 and Figure 8 As shown, the first outer magnet groove guide channel 2211 connects the first end of the first outer magnet groove 1111 to the first end of the third outer magnet groove 1113, and the second outer magnet groove guide channel 2212 connects the first end of the second outer magnet groove 1112 to the first end of the fourth outer magnet groove 1114, forming a highly efficient injection molding structure. This ensures that even in complex rotor structures, the injection molding material can flow along a preset path, improving the controllability of injection molding and the accuracy of magnet fixing, strengthening the bond between the magnet and the iron core, and increasing the magnet fixing strength, thus providing a solid physical foundation for the high-speed operation of the motor.

[0035] Furthermore, the outer magnet groove guide channel 221 also includes a third outer magnet groove guide channel 2213. The third outer magnet groove guide channel 2213 is disposed on the guide plate 21 and is located between the first outer magnet groove guide channel 2211 and the second outer magnet groove guide channel 2212. The third outer magnet groove guide channel 2213 is connected to the second end of the first outer magnet groove 1111, the second end of the second outer magnet groove 1112, and the second end of the third outer magnet groove 1113. The third outer magnet groove guide channel 2213 is also connected to the second end of the fourth outer magnet groove 1114.

[0036] Combination Figure 7 and Figure 8 As shown, a third outer magnet groove guide channel 2213 is added to the guide plate 21. The third outer magnet groove guide channel 2213 is set between the first outer magnet groove guide channel 2211 and the second outer magnet groove guide channel 2212, realizing full connection of the second ends of the first outer magnet groove 1111, the second outer magnet groove 1112, the third outer magnet groove 1113 and the fourth outer magnet groove 1114. This widens the flow path of the injection molding material, ensures the double-end filling of the magnet groove, and guarantees the uniformity and integrity of the material coverage during the injection molding process of the magnet groove. This further improves the fixing strength and bonding tightness between the magnet and the iron core, and has a positive impact on the long-term stability and high-speed performance of the motor.

[0037] Further, the inner magnetic slot group 112 includes a first inner magnetic slot 1121 and a second inner magnetic slot 1122 disposed on one of the adjacent rotor cores 11, and a third inner magnetic slot 1123 and a fourth inner magnetic slot 1124 disposed on the other of the adjacent rotor cores 11. The inner magnetic slot guide channel 222 includes a first inner magnetic slot guide channel 2221 and a second inner magnetic slot guide channel 2222. The first inner magnetic slot guide channel 2221 is disposed on the guide plate 21. The first inner magnetic slot guide channel 2221 is disposed on the side of the first outer magnetic slot guide channel 2211 away from the second outer magnetic slot guide channel 2212. 221 is connected to the first end of the first inner magnet groove 1121, and the first inner magnet groove guide channel 2221 is connected to the first end of the third inner magnet groove 1123; the second inner magnet groove guide channel 2222 is disposed on the guide plate 21, and the second inner magnet groove guide channel 2222 is disposed on the side of the second outer magnet groove guide channel 2212 away from the first outer magnet groove guide channel 2211. The second inner magnet groove guide channel 2222 is disposed opposite to the first inner magnet groove guide channel 2221, and the second inner magnet groove guide channel 2222 is connected to the first end of the second inner magnet groove 1122. The first inner magnet groove guide channel 2221 is connected to the first end of the fourth inner magnet groove 1124.

[0038] Combination Figure 7 and Figure 8 As shown, the first inner magnet slot guide channel 2221 connects to the first end of the first inner magnet slot 1121 and the first end of the third inner magnet slot 1123, while the second inner magnet slot guide channel 2222 connects to the first end of the second inner magnet slot 1122 and the first end of the fourth inner magnet slot 1124. This continuous guide design effectively enhances the fixing strength of the magnets in the inner layer, playing a decisive role in improving the dynamic balance performance and NVH performance of the rotor structure. The precise positioning and efficient connection of the inner magnet slot group 112 not only solves the flow problem in the overall injection molding process, but also ensures the balance and stability of the fixing structure between the magnets and the rotor core 11, providing strong physical support for the high-speed motor. At the same time, this improvement also helps to improve production efficiency and product quality, and reduce production costs caused by process instability.

[0039] Furthermore, the inner magnetic steel groove guide channel 222 also includes a third inner magnetic steel groove guide channel 2223. The third inner magnetic steel groove guide channel 2223 is disposed on the guide plate 21 and is located between the first inner magnetic steel groove guide channel 2221 and the second inner magnetic steel groove guide channel 2222. The third inner magnetic steel groove guide channel 2223 is connected to the second end of the first inner magnetic steel groove 1121, the second end of the second inner magnetic steel groove 1122, and the second end of the third inner magnetic steel groove 1123. The third inner magnetic steel groove guide channel 2223 is also connected to the second end of the fourth inner magnetic steel groove 1124.

[0040] Combination Figure 7 and Figure 8 As shown, a third inner magnet groove guide channel 2223 is provided on the guide plate 21. The third inner magnet groove guide channel 2223 is located between the first inner magnet groove guide channel 2221 and the second inner magnet groove guide channel 2222, so as to realize the double-end connection of the inner layer magnet groove group 112 of the adjacent rotor core 11. The second end of the first inner magnet groove 1121, the second end of the second inner magnet groove 1122, the second end of the third inner magnet groove 1123 and the second end of the fourth inner magnet groove 1124 are precisely connected by the third inner magnet groove guide channel 2223. The third inner magnet groove guide channel 2223 realizes the optimization of the double-end injection path of the inner layer magnet groove group 112, ensuring that the injection material not only flows smoothly from the first end of the magnet groove, but also fills in reverse from the second end, which greatly improves the full filling rate of the inner layer magnet groove group 112 and the reliability of magnet fixation.

[0041] Furthermore, the first outer magnet channel guide channel 2211 and the first inner magnet channel guide channel 2221 are arranged adjacent to each other, the second outer magnet channel guide channel 2212 and the second inner magnet channel guide channel 2222 are arranged adjacent to each other, and the third inner magnet channel guide channel 2223 and the third outer magnet channel guide channel 2213 are arranged sequentially along the circumferential direction of the guide plate 21.

[0042] Combination Figures 2 to 8 As shown, the two adjacent rotor cores 11 include a first rotor core 1101 and a second rotor core 1102. Through the coordinated design of the outer magnet slot guide channel 221 and the inner magnet slot guide channel 222, the efficient coordination of the injection flow of the outer magnet slot group 111 and the inner magnet slot group 112 and the comprehensive optimization of the magnet fixing strength are achieved. This not only improves the accuracy and efficiency of the overall injection molding process, but also significantly enhances the stability and NVH performance of the motor under high-speed operating conditions, providing strong technical support for the performance improvement and market competitiveness of new energy vehicle motors.

[0043] Furthermore, the rotor structure includes a coolant flow channel 30, part of which is formed on the rotor shaft 12, and another part of which is formed on the guide assembly 20. The guide assembly 20 also includes a guide pipe 23 and a balance plate 24. The guide pipe 23 is connected to the guide plate 21 and extends along the axial direction of the rotor core 11. The guide pipe 23 is arranged adjacent to the guide channel 22. There are two balance plates 24, which are arranged opposite to each other at both ends of the rotor core assembly 10 in the axial direction. The balance plate 24 is provided with a cooling channel 241 and an oil collection groove 242. The guide pipe 23 is connected to the cooling channel 241 and forms part of the coolant flow channel 30. The oil collection groove 242 is connected to the coolant flow channel 30 through the outlet 2421.

[0044] Combination Figure 1 , Figures 9 to 15 As shown, the guide pipe 23 is tightly integrated with the guide plate 21, and the guide pipe 23 extends along the axial direction of the rotor core 11. The guide pipe 23 is not only adjacent to the guide channel 22, but also communicates with the cooling channel 241 on the balance plate 24. This layout effectively guides the coolant to the magnets, directly improving the cooling efficiency of the magnets. Two balance plates 24 are designed, respectively located at both ends of the rotor core assembly 10 in the axial direction, ensuring the flow of coolant throughout the entire length of the rotor core assembly 10. The balance plate 24 is equipped with a cooling channel 241 and an oil collection tank 242. The cooling channel 241 communicates with the guide pipe 23, realizing the directional delivery of coolant; the oil collection tank 242 is connected to the coolant flow channel 30 through the outlet 2421, responsible for collecting and draining excess coolant, thereby preventing the accumulation and overflow of coolant inside the rotor core 11, maintaining the cleanliness of the motor's internal environment and ensuring safe operation.

[0045] Combination Figure 14 and Figure 15 As shown, the connection between the guide pipe 23 and the cooling channel 241 of the balance plate 24 forms a closed-loop cooling system that runs from the rotor shaft 12 to the guide plate 21, then to the balance plate 24, and finally back to the rotor shaft 12. The coolant can flow efficiently along a preset path, achieving precise cooling of the magnets, reducing their operating temperature, minimizing thermal stress accumulation, and significantly enhancing their performance stability and service life. The rational layout of the coolant flow channels 30 improves the motor's cooling efficiency, enabling stable operation at higher power and speeds. Furthermore, the effective circulation of the coolant optimizes the internal heat distribution of the motor, reduces localized overheating, and improves the overall efficiency and NVH performance of the motor, providing technical support for the trend towards high-performance and miniaturized motors.

[0046] Furthermore, the cooling channel 241 includes a first cooling channel 2411, a second cooling channel 2412, and a third cooling channel 2413. The first cooling channel 2411 communicates with the shaft hole of the balance plate 24, and the other end of the first cooling channel 2411 extends along the circumferential direction of the balance plate 24. One end of the second cooling channel 2412 communicates with the first cooling channel 2411, and the other end of the second cooling channel 2412 extends away from the first cooling channel 2411 along the circumferential direction of the balance plate 24. The length direction of the second cooling channel 2412 is angled to the length direction of the first cooling channel 2411. There are two second cooling channels 2412. The first cooling channel 2411 is symmetrically arranged, and the second cooling channel 2412 is arranged correspondingly to the inner magnetic steel groove group 112. One end of the third cooling channel 2413 is connected to the end of the first cooling channel 2411 away from the shaft hole of the balance plate 24, and the other end of the third cooling channel 2413 extends away from the first cooling channel 2411 along the circumferential direction of the balance plate 24. The length direction of the third cooling channel 2413 is arranged at an angle to the length direction of the first cooling channel 2411. There are two third cooling channels 2413, and the two third cooling channels 2413 are symmetrically arranged about the first cooling channel 2411. The third cooling channel 2413 is arranged correspondingly to the outer magnetic steel groove group 111.

[0047] Combination Figure 12 and Figure 13As shown, in this embodiment, one end of the first cooling channel 2411 is connected to the shaft hole on the balance plate 24, responsible for the initial introduction of coolant. The other end of the first cooling channel 2411 extends along the circumferential direction of the balance plate 24, forming the starting point of coolant flow and ensuring a stable supply and uniform distribution of coolant. Two second cooling channels 2412 are designed, each with its starting point connected to the first cooling channel 2411, but its extension direction is at a certain angle to the first cooling channel 2411, extending away from the first cooling channel 2411 along the circumferential direction of the balance plate 24. This design ensures that the coolant can be evenly distributed to the inner magnet tank assembly 112, providing efficient cooling to the magnets. The two second cooling channels 2412 are symmetrically arranged about the first cooling channel 2411. This symmetry not only improves the stability of the cooling system but also ensures balanced flow of coolant on both sides of the inner magnet tank, avoiding localized overcooling or overheating. The third cooling channel 2413 is also designed as two, with one end connected to the first cooling channel 2411, but extending in a different direction than the second cooling channel 2412. It is also angled and extends away from the first cooling channel 2411 along the circumferential direction of the balance plate 24. The third cooling channel 2413 is correspondingly arranged with the outer magnet tank assembly 111, ensuring that the coolant can directly contact the outer magnet tank for comprehensive and direct cooling of the magnets. The two third cooling channels 2413 are symmetrical about the first cooling channel 2411, further enhancing the balance and reliability of the cooling system.

[0048] Through the precise layout of the first cooling channel 2411, the second cooling channel 2412, and the third cooling channel 2413, the coolant flow channel 30 forms a comprehensive cooling network that considers both internal and external factors. This multi-stage cooling channel design ensures that the coolant can precisely cool the magnets according to their actual position and heat generation, effectively reducing the operating temperature of the magnets, avoiding high-temperature failure, and improving the fixing strength between the magnets and the core, as well as the dynamic balance performance of the rotor. This arrangement not only optimizes the flow path and efficiency of the coolant but also ensures the cooling effect of the magnets under the overall injection molding process, as well as the stability and NVH performance of the motor under high-speed operating conditions.

[0049] Furthermore, there are multiple sets of cooling channels 241 and multiple oil collection tanks 242. The multiple sets of cooling channels 241 are arranged at intervals along the circumference of the shaft hole of the balance plate 24, and the multiple oil collection tanks 242 are arranged at intervals along the circumference of the shaft hole of the balance plate 24. The cooling channels 241 and the oil collection tanks 242 are arranged alternately, and the liquid outlet 2421 is located on the side of the oil collection tank 242 away from the shaft hole of the balance plate 24.

[0050] Multiple cooling channels 241 are evenly spaced along the circumferential direction of the shaft hole, achieving a balanced distribution of coolant around the balance plate 24. This design ensures that the coolant can evenly cover each magnet slot of the rotor core 11, improving cooling efficiency and avoiding local overcooling or overheating caused by coolant flow deviation, thus enhancing the stability and reliability of motor operation. Multiple oil collection tanks 242 are also spaced circumferentially along the shaft hole of the balance plate 24, staggered with the cooling channels 241. This design not only effectively collects the cooled liquid but also ensures a uniform distribution of coolant on the balance plate 24, preventing local accumulation, reducing flow resistance, and enhancing the overall efficiency of the cooling system. The outlet 2421 of each oil collection tank 242 is located on the side away from the shaft hole of the balance plate 24, ensuring that the coolant, after being cooled by the magnet slots, can smoothly flow into the oil collection tank 242 and be discharged through the outlet 2421, forming a highly efficient coolant circulation system. Figure 12 As shown, in one embodiment of this application, there are four sets of cooling channels 241 and four sets of oil collection tanks 242. The four sets of cooling channels 241 and the four sets of oil collection tanks 242 are arranged alternately, corresponding to the eight sets of outer layer magnet slots 111 and the eight sets of inner layer magnet slots 112 of the rotor core 11. Through the staggered layout of the cooling channels 241 and oil collection tanks 242, and the optimized setting of the liquid outlet 2421, the cooling system forms a closed-loop, balanced cooling circulation network. This design not only improves the fluidity and coverage of the coolant inside the rotor, but also ensures uniform heat dissipation during the cooling process, reduces the working temperature of the magnets, and improves the fixing strength between the magnets and the core and the dynamic balance performance of the rotor.

[0051] Furthermore, the guide plate 21 includes a guide plate unit 210, which is provided with a guide channel 22. A groove 211 is provided on one side of the guide plate unit 210, which is adjacent to the guide channel 22. The other side of the guide plate unit 210 is connected to the guide pipe 23, which is connected to the groove 211. There are two guide plate units 210. The side of one of the two guide plate units 210 with the groove 211 is connected to the side of the other guide plate unit 210 with the groove 211, and the grooves 211 of the two guide plate units 210 are connected.

[0052] Combination Figure 9 and Figure 10As shown, the interconnected design of the groove 211 and the guide pipe 23 forms a multi-stage interconnected coolant circulation path. The grooves 211 of two adjacent guide plate units 210 are connected. Coolant flows in from the guide pipe 23 of one guide plate unit 210, and guided by the groove 211, flows into the guide pipe 23 of the adjacent guide plate unit 210, and finally reaches the designated magnetic steel tank for cooling. This multi-stage interconnected circulation path effectively avoids dead zones of coolant in the guide plate assembly, ensuring uniform distribution and efficient circulation of coolant throughout the system.

[0053] Furthermore, there are multiple grooves 211 and multiple flow channels 22, with each groove 211 corresponding to a different flow channel 22. Figure 10 and Figure 11 As shown, through the precise correspondence between multiple grooves 211 and the guide channel 22, the coolant can flow to specific magnet slots in a targeted manner, thereby achieving direct cooling of the magnets, avoiding waste of cooling resources, and improving cooling efficiency.

[0054] Furthermore, each groove 211 is provided with at least one guide tube 23. Combined with Figure 14 and Figure 15 As shown, two balance plates 24 are disposed opposite each other at both ends of the rotor core assembly 10 in the axial direction. The cooling channel 241 of one balance plate 24 is correspondingly disposed with the oil collection groove 242 of the other balance plate 24 (i.e., misaligned installation) to achieve bidirectional flow of coolant. (Coolant flows in from a portion of the coolant flow channel 30 disposed on the rotor shaft 12 through the cooling channel 241 of the first end balance plate 24, flows through the guide pipe 23 and the groove 211 to the oil collection groove 242 of the second end balance plate 24, and flows out to the oil collection groove 242 of the second end balance plate 24.) The coolant flow channel 30 located on the rotor shaft 12, and the coolant flowing from the coolant flow channel 30 located on the rotor shaft 12 through the cooling channel 241 of the balance plate 24 at the second end, through the guide pipe 23 and the groove 211 to the oil collection groove 242 of the balance plate 24 at the first end and out to the coolant flow channel 30 located on the rotor shaft 12, improve the utilization efficiency and circulation path balance of the coolant, reduce the working temperature of the magnet, and improve the fixing strength of the magnet and the overall performance of the motor.

[0055] Combination Figure 1As shown in one embodiment of this application, a balance plate 24 is provided at each end of the rotor core assembly 10 in the circumferential direction, and the two balance plates 24 are arranged opposite to each other. The rotor core assembly 10 includes four rotor cores 11 (first to fourth in the axial direction), wherein a guide plate 21 is provided between the first rotor core 11 and the second rotor core 11, and a guide plate 21 is provided between the third rotor core 11 and the fourth rotor core 11. This arrangement realizes the injection molding connection between the first rotor core 11 and the second rotor core 11, as well as between the third rotor core 11 and the fourth rotor core 11, improving the utilization efficiency and circulation path balance of the coolant, reducing the working temperature of the magnets, and improving the fixing strength of the magnets and the overall performance of the motor.

[0056] In another embodiment of this application, a vehicle is also provided, including a rotor structure, which is the rotor structure described in the above embodiment. Specifically, the rotor structure includes a rotor core assembly 10 and a flow guiding assembly 20. The rotor core assembly 10 includes a plurality of rotor cores 11 and a rotor shaft 12. There are multiple rotor cores 11, which are arranged along the axial direction of the rotor shaft 12. Each rotor core 11 has a magnetic slot group 110. The flow guiding assembly 20 is connected to the rotor shaft 12. A portion of the flow guiding assembly 20 is disposed between at least two adjacent rotor cores 11, and another portion of the flow guiding assembly 20 is disposed at both ends in the axial direction of the rotor core assembly 10. The flow guiding assembly 20 has a flow guiding channel 22, and the magnetic slot groups 110 of at least two adjacent rotor cores 11 are connected to the flow guiding channel 22.

[0057] By applying the technical solution of this application, the flow guiding component 20 (especially its flow guiding channel 22) effectively solves the flow problem of the injection molding material between the rotor core 11. Even when the overlap area of ​​the magnet slot group 110 is insufficient, the injection molding material can still flow smoothly through the structure connected by the flow guiding channel 22, ensuring the complete filling of the magnet slot group 110. This enhances the bonding strength between the magnet and the core, improves the overall mechanical performance of the rotor, and solves the technical problem of poor injection molding effect of the magnet slot due to insufficient or no overlap between the magnet slot segments in the prior art.

[0058] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0059] 1) Part of the flow guiding component 20 (flow guiding channel 22) is used to guide the injection molding material, while another part of the flow guiding component 20 is used to guide the coolant. The flow guiding component 20 not only optimizes the injection molding process, but its other part, the flow guiding channel 22 (for guiding coolant), can directly contact the magnet slot assembly 110, achieving effective cooling of the magnets. Under integral injection molding conditions, this cooling mechanism significantly reduces the temperature of the magnets during high-speed operation, reduces the risk of magnet failure due to overheating, and enhances the long-term stability and operating efficiency of the motor.

[0060] 2) Through the coordinated design of the outer magnet channel guide channel 221 and the inner magnet channel guide channel 222, the efficient coordination of the injection flow of the outer magnet channel group 111 and the inner magnet channel group 112 and the comprehensive optimization of the magnet fixing strength are achieved. This not only improves the accuracy and efficiency of the overall injection molding process, but also significantly enhances the stability and NVH performance of the motor under high-speed operating conditions, providing strong technical support for the performance improvement and market competitiveness of new energy vehicle motors.

[0061] 3) Two balance plates 24 are disposed opposite each other at both ends of the rotor core assembly 10 in the axial direction. The cooling channel 241 of one balance plate 24 is correspondingly disposed with the oil collection groove 242 of the other balance plate 24 (i.e., misaligned installation) so as to realize bidirectional flow of coolant (coolant flows in from a portion of the coolant flow channel 30 disposed on the rotor shaft 12 through the cooling channel 241 of the first end balance plate 24, flows through the guide pipe 23 and the groove 211 to the oil collection groove 242 of the second end balance plate 24 and flows out to the designated location). The coolant flow channel 30 located on the rotor shaft 12, and the coolant flowing from the coolant flow channel 30 located on the rotor shaft 12 through the cooling channel 241 of the balance plate 24 at the second end, through the guide pipe 23 and the groove 211 to the oil collection groove 242 of the balance plate 24 at the first end and out to the coolant flow channel 30 located on the rotor shaft 12, improve the utilization efficiency and circulation path balance of the coolant, reduce the working temperature of the magnet, and improve the fixing strength of the magnet and the overall performance of the motor.

[0062] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0063] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0064] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rotor structure, characterized in that, include: The rotor core assembly (10) includes a plurality of rotor cores (11) and a rotor shaft (12). The rotor cores (11) are multiple and are arranged along the axial direction of the rotor shaft (12). The rotor cores (11) have magnetic slot groups (110). A flow guiding assembly (20) is connected to the rotor shaft (12). Part of the flow guiding assembly (20) is disposed between at least two adjacent rotor cores (11), and another part of the flow guiding assembly (20) is disposed at both ends of the rotor core assembly (10) in the axial direction. The flow guiding assembly (20) has a flow guiding channel (22), and the magnetic slot groups (110) of at least two adjacent rotor cores (11) are disposed in communication with the flow guiding channel (22).

2. The rotor structure according to claim 1, characterized in that, The magnet slot assembly (110) includes an outer magnet slot assembly (111) and an inner magnet slot assembly (112). The inner magnet slot assembly (112) and the outer magnet slot assembly (111) are arranged sequentially along the circumferential direction of the rotor core (11). The flow guiding assembly (20) includes a flow guiding plate (21), which is disposed between at least two adjacent rotor cores (11). The flow guiding channel (22) includes: The outer magnet groove guide channel (221) is disposed on the guide plate (21). The outer magnet groove group (111) of the adjacent rotor core (11) is connected to the outer magnet groove guide channel (221). There are multiple sets of outer magnet groove guide channels (221), and the multiple sets of outer magnet groove guide channels (221) are arranged at intervals along the circumference of the guide plate (21). The inner magnetic steel groove guide channel (222) is disposed on the guide plate (21). The inner magnetic steel groove group (112) of the adjacent rotor core (11) is connected to the inner magnetic steel groove guide channel (222). There are multiple sets of inner magnetic steel groove guide channels (222), and the multiple sets of inner magnetic steel groove guide channels (222) are arranged at intervals along the circumference of the guide plate (21).

3. The rotor structure according to claim 2, characterized in that, The outer magnetic slot group (111) includes a first outer magnetic slot (1111) and a second outer magnetic slot (1112) disposed on one of the adjacent rotor cores (11), and a third outer magnetic slot (1113) and a fourth outer magnetic slot (1114) disposed on the other of the adjacent rotor cores (11). The first outer magnetic slot (1111) and the second outer magnetic slot (1112) are symmetrically arranged, and the third outer magnetic slot (1113) and the fourth outer magnetic slot (1114) are symmetrically arranged. The outer magnetic slot guide channel (221) includes: The first external magnet channel guide channel (2211) is disposed on the guide plate (21), the first external magnet channel guide channel (2211) is connected to the first end of the first external magnet channel (1111), and the first external magnet channel guide channel (2211) is connected to the first end of the third external magnet channel (1113); The second outer magnet channel guide channel (2212) is disposed on the guide plate (21). The second outer magnet channel guide channel (2212) and the first outer magnet channel guide channel (2211) are disposed at intervals along the circumference of the guide plate (21). The second outer magnet channel guide channel (2212) and the first outer magnet channel guide channel (2211) are disposed opposite to each other. The second outer magnet channel guide channel (2212) is connected to the first end of the second outer magnet channel (1112). The first outer magnet channel guide channel (2211) is connected to the first end of the fourth outer magnet channel (1114).

4. The rotor structure according to claim 3, characterized in that, The external magnetic steel groove guide channel (221) also includes: The third outer magnet channel guide channel (2213) is disposed on the guide plate (21). The third outer magnet channel guide channel (2213) is located between the first outer magnet channel guide channel (2211) and the second outer magnet channel guide channel (2212). The third outer magnet channel guide channel (2213) is connected to the second end of the first outer magnet channel (1111). The third outer magnet channel guide channel (2213) is connected to the second end of the second outer magnet channel (1112). The third outer magnet channel guide channel (2213) is connected to the second end of the third outer magnet channel (1113). The third outer magnet channel guide channel (2213) is connected to the second end of the fourth outer magnet channel (1114).

5. The rotor structure according to claim 4, characterized in that, The inner magnetic slot group (112) includes a first inner magnetic slot (1121) and a second inner magnetic slot (1122) disposed on one of the adjacent rotor cores (11), and a third inner magnetic slot (1123) and a fourth inner magnetic slot (1124) disposed on the other of the adjacent rotor cores (11). The inner magnetic slot guide channel (222) includes: The first inner magnet groove guide channel (2221) is disposed on the guide plate (21). The first inner magnet groove guide channel (2221) is disposed on the side of the first outer magnet groove guide channel (2211) away from the second outer magnet groove guide channel (2212). The first inner magnet groove guide channel (2221) is connected to the first end of the first inner magnet groove (1121). The first inner magnet groove guide channel (2221) is connected to the first end of the third inner magnet groove (1123). The second inner magnet groove guide channel (2222) is disposed on the guide plate (21). The second inner magnet groove guide channel (2222) is disposed on the side of the second outer magnet groove guide channel (2212) away from the first outer magnet groove guide channel (2211). The second inner magnet groove guide channel (2222) is disposed opposite to the first inner magnet groove guide channel (2221). The second inner magnet groove guide channel (2222) is connected to the first end of the second inner magnet groove (1122). The first inner magnet groove guide channel (2221) is connected to the first end of the fourth inner magnet groove (1124).

6. The rotor structure according to claim 5, characterized in that, The inner magnetic steel groove guide channel (222) also includes: The third inner magnet channel guide channel (2223) is disposed on the guide plate (21). The third inner magnet channel guide channel (2223) is located between the first inner magnet channel guide channel (2221) and the second inner magnet channel guide channel (2222). The third inner magnet channel guide channel (2223) is connected to the second end of the first inner magnet channel (1121). The third inner magnet channel guide channel (2223) is connected to the second end of the second inner magnet channel (1122). The third inner magnet channel guide channel (2223) is connected to the second end of the third inner magnet channel (1123). The third inner magnet channel guide channel (2223) is connected to the second end of the fourth inner magnet channel (1124).

7. The rotor structure according to claim 6, characterized in that, The first outer magnet groove guide channel (2211) is arranged adjacent to the first inner magnet groove guide channel (2221), and / or the second outer magnet groove guide channel (2212) is arranged adjacent to the second inner magnet groove guide channel (2222), and / or the third inner magnet groove guide channel (2223) and the third outer magnet groove guide channel (2213) are arranged sequentially along the circumferential direction of the guide plate (21).

8. The rotor structure according to claim 6 or 7, characterized in that, The rotor structure includes a coolant flow channel (30), a portion of which is formed on the rotor shaft (12), and another portion of which is formed on the flow guide assembly (20). The flow guide assembly (20) further includes: A guide pipe (23) is connected to the guide plate (21). The guide pipe (23) extends along the axial direction of the rotor core (11). The guide pipe (23) is arranged adjacent to the guide channel (22). Two balance plates (24) are provided, which are arranged opposite each other at both ends of the rotor core assembly (10) in the axial direction. The balance plates (24) are provided with cooling channels (241) and oil collection tanks (242). The guide pipe (23) is connected to the cooling channels (241). The guide pipe (23) and the cooling channels (241) form a portion of the coolant flow channel (30). The oil collection tank (242) is connected to the coolant flow channel (30) through the outlet (2421).

9. The rotor structure according to claim 8, characterized in that, The cooling channel (241) includes: The first cooling channel (2411) is connected to the shaft hole of the balance plate (24), and the other end of the first cooling channel (2411) extends along the circumferential direction of the balance plate (24). The second cooling channel (2412) has one end connected to the first cooling channel (2411) and the other end extends away from the first cooling channel (2411) along the circumferential direction of the balance plate (24). The length direction of the second cooling channel (2412) is set at an angle to the length direction of the first cooling channel (2411). There are two second cooling channels (2412), which are symmetrically arranged about the first cooling channel (2411). The second cooling channels (2412) are arranged corresponding to the inner magnetic steel groove group (112). The third cooling channel (2413) has one end connected to the end of the first cooling channel (2411) away from the shaft hole of the balance plate (24), and the other end of the third cooling channel (2413) extends away from the first cooling channel (2411) along the circumferential direction of the balance plate (24). The length direction of the third cooling channel (2413) is set at an angle to the length direction of the first cooling channel (2411). There are two third cooling channels (2413), which are symmetrically arranged about the first cooling channel (2411). The third cooling channels (2413) are arranged corresponding to the outer magnetic steel groove group (111).

10. The rotor structure according to claim 9, characterized in that, The cooling channels (241) are in multiple sets, and the oil collection grooves (242) are in multiple sets. The cooling channels (241) are arranged at intervals along the circumference of the shaft hole of the balance plate (24), and the oil collection grooves (242) are arranged at intervals along the circumference of the shaft hole of the balance plate (24). The cooling channels (241) and the oil collection grooves (242) are arranged alternately. The liquid outlet (2421) is located on the side of the oil collection groove (242) away from the shaft hole of the balance plate (24).

11. The rotor structure according to claim 9 or 10, characterized in that, The guide vane (21) includes: A flow guide plate unit (210) is provided with the flow guide channel (22). A groove (211) is provided on one side of the flow guide plate unit (210). The groove (211) is arranged adjacent to the flow guide channel (22). The other side of the flow guide plate unit (210) is connected to the flow guide pipe (23). The flow guide pipe (23) is arranged in communication with the groove (211). There are two flow deflector units (210). One of the two flow deflector units (210) has a groove (211) on one side, which is connected to the other of the two flow deflector units (210) has a groove (211) on one side, and the grooves (211) of the two flow deflector units (210) are connected.

12. The rotor structure according to claim 11, characterized in that, There are multiple grooves (211) and multiple flow channels (22), and the multiple grooves (211) and multiple flow channels (22) are arranged in a one-to-one correspondence.

13. A vehicle comprising a rotor structure, characterized in that, The rotor structure is the rotor structure according to any one of claims 1 to 12.

Images