Low-noise new energy automobile motor rotor structure and use method thereof
By staggering aluminum strips and end rings in the rotor structure of the motor of new energy vehicles, combined with the engagement mechanism and the central column, the noise increase problem caused by the wear of the motor rotor shaft is solved, the stability and low-noise operation of the motor are achieved, and the operation efficiency and life of the motor are improved.
Patent Information
- Application Number
- CN202510485417.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2025-07-25
AI Technical Summary
During the later use of the gears at the rear end of the rotor shaft of the new energy vehicle motor, the gears at the end of the rotor shaft are worn due to mechanical contact, which leads to the impact of dynamic balance, thereby increasing the motor running noise.
A low-noise new energy vehicle motor rotor structure is designed. By staggering aluminum strips and end rings, combining the engagement mechanism and the central column, power output is achieved, and dynamic balance detection and counterweight adjustment are ensured to ensure the stability and balance of the rotor shaft.
It effectively prevents the noise increase problem caused by the wear of the rotor shaft, reduces motor vibration and noise, improves motor operation stability and service life, and reduces maintenance costs.
Smart Images
Figure CN120377564A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of new energy vehicle motor rotors, and specifically to a low-noise new energy vehicle motor rotor structure and its usage method. Background Art
[0002] The low-noise design of new energy vehicle motor rotors can be achieved by introducing V-shaped inclined slots and multi-unit motor structures. Among them, the V-shaped inclined slots effectively reduce the axial force during rotor rotation, while the multi-unit motor structure uses different pole structures to generate phase differences, weakens the force wave, reduces electromagnetic vibration noise, and improves driving comfort. The production of low-noise motor rotors also involves the optimization of magnet arrangement and the innovative design of rotor slots. By setting double-layer U-shaped or V-shaped rotor slots and cooperating with the structures of reinforcing ribs and magnetic isolation bridges, the magnetic density waveform of the motor is improved, and the air-gap magnetic field becomes more uniform, thereby reducing torque fluctuations and vibrations. These fine design adjustments, combined with the precise correction of the magnet width, jointly act to reduce the noise level of the motor, demonstrating the in-depth consideration and technological progress of motor design in noise reduction. The gear provided at the tail end of the motor rotor shaft of new energy vehicles can provide stable power output. During the later use process, due to mechanical contact, there is a problem of wear. Moreover, during the later maintenance process, the positions where the motor rotor shaft is connected to the bearing and the disassembly process of the rotor shaft will both cause a certain amount of wear. Although this part of the wear will not cause the entire rotor shaft to malfunction, it will have a certain impact on the dynamic balance during the rotation of the rotor shaft, thereby affecting the vibration amplitude of the rotor shaft and increasing the noise of the overall operation of the motor. Therefore, a low-noise new energy vehicle motor rotor structure and its usage method are proposed for the above problems. Summary of the Invention
[0003] The purpose of the present invention is to provide a low-noise new energy vehicle motor rotor structure and its usage method to solve the problem that the gear provided at the tail end of the motor rotor shaft of new energy vehicles can provide stable power output. During the later use process, due to mechanical contact, there is a problem of wear. Moreover, during the later maintenance process, the positions where the motor rotor shaft is connected to the bearing and the disassembly process of the rotor shaft will both cause a certain amount of wear. Although this part of the wear will not cause the entire rotor shaft to malfunction, it will have a certain impact on the dynamic balance during the rotation of the rotor shaft, thereby affecting the vibration amplitude of the rotor shaft and increasing the noise of the overall operation of the motor.
[0004] To achieve the above purpose, the present invention provides the following technical solutions: A low-noise new energy automobile motor rotor structure and a method of using the same, comprising a rotor core, end rings, aluminum bars and rotor blades, wherein aluminum bars are staggered between the rotor cores, end rings are installed at both ends of the rotor core and the aluminum bars, a rotor shaft is installed in the middle of the end rings, bearings are installed on the outer sides of both ends of the rotor shaft through interference fit, a center column is welded and fixed at one end of the rotor shaft; a center cover is installed on the inner side of the middle of the center column, and a connector for power output is installed on the outer side of the center column through a snap-fit mechanism; the connector comprises a gear ring, the outer side of the gear ring is evenly distributed with teeth in a ring shape, and positioning teeth are integrally formed on both sides of the inner side of the gear ring A protrusion, a counterweight groove is distributed in an annular shape on the inner side of one end of the gear ring away from the rotor core, a positioning groove is opened on the inner side of the gear ring, the center cover includes a circular plate, a control column is fixedly connected to one end of the circular plate, an external thread is opened on the outer side of the circular plate, the clamping mechanism includes a clamping plate, an elastic connecting plate is arranged between the clamping plates, the clamping plates on the same side are connected by a telescopic guide column, a control plate is arranged inside the clamping plate on the same side, an oblique groove is opened inside the clamping plate, the center column includes a column body, a blind hole is opened in the middle of the inner side of one end of the column body, an internal thread is opened inside the blind hole, a transverse groove is opened on the outer side of the column body, and a through groove is opened on the inner side of the column body.
[0005] As a further optimization of the present invention, there are a plurality of rotor blades, the angle between the rotor blades and the center axis of the end ring is 35°, the rotor blades are distributed in a ring-like shape and are equidistantly distributed on the side of the end ring away from the rotor core, and two end rings are provided and are parallel to each other.
[0006] As further optimized content of the present invention, the gear ring and the rotor shaft have the same axis, two positioning protrusions are provided and are parallel to each other, the length of the positioning protrusion is equal to the length of the gear ring, and the two sides of the end surface of the positioning protrusion close to the center axis of the gear ring are arc-shaped.
[0007] As a further optimization of the present invention, there are two positioning grooves, the positioning grooves are arc-shaped, the positioning grooves are arranged on the upper and lower sides between the two positioning protrusions, there are a number of counterweight grooves, the counterweight grooves are distributed in three rows in an annular shape inside the gear ring, and the counterweight grooves are arranged on the side of the positioning groove close to the end ring, and the depth of the counterweight groove is one half of the thickness of the gear ring.
[0008] As a further optimization of the present invention, the circular plate is adapted to the internal thread opened inside the blind hole through an external thread, the circular plate and the cylinder are spirally connected through the external thread and the internal thread, the circular plate and the control column have the same axis, the outer edge of the end of the control column away from the circular plate is arc-shaped, and the end face of the circular plate away from the control column and the end face of the column away from the end ring are arranged on the same vertical plane.
[0009] As a further optimized content of the present invention, wherein: there are four of the clamping plates, the clamping plates are connected to the column body through through grooves, the clamping plates are connected to the tooth ring through positioning grooves, there are four elastic connecting plates connected between the clamping plates, the upper and lower clamping plates are connected through the elastic connecting plates, there is no contact between the elastic connecting plates, an arc-shaped groove is provided in the middle of one end of the clamping plate close to the elastic connecting plate, and the end of the clamping plate far from the elastic connecting plate is an arc surface.
[0010] As a further optimized content of the present invention, wherein: the control board includes a flat plate, inclined blocks with a triangular cross-section are fixedly connected to both ends of the flat plate, there are several of the inclined blocks, an extrusion groove is formed inside one end of the flat plate, the inclined blocks correspond to inclined grooves one by one, the cross-section of the inclined groove is a right trapezoid, and the depth of the inclined groove is equal to the vertical projection length of the inclined block, and the flat plate is in close contact with the control column through the extrusion groove.
[0011] As a further optimized content of the present invention, wherein: the blind hole is communicated with the through groove, and the included angle formed between the central axis of the blind hole and the perpendicular bisector of the through groove is 90°.
[0012] As a further optimized content of the present invention, wherein: there are two of the transverse grooves, the edge positions of the transverse grooves are both arc-shaped, the transverse grooves correspond to the positioning protrusions one by one, and the transverse grooves are adapted to the positioning protrusions.
[0013] As a further optimized content of the present invention, it includes the following steps: Step I: Assembly: First, install the clamping mechanism inside the central column. During the installation process, install the clamping plates inside the column body through the through grooves. After the installation is completed, install the tooth ring outside the column body. During the installation process, the positioning protrusions integrally formed inside the tooth ring are adapted to the transverse grooves opened on both sides of the column body, and the positioning grooves opened inside the tooth ring are adapted to the arc-surface side of the clamping plate to complete the assembly between the tooth ring and the column body. Then install the central cover inside the blind hole. After the installation is completed, the control column squeezes the flat plate. After the flat plate is squeezed, the clamping plates arranged on both sides are respectively in close contact with the inner walls of the positioning groove and the through groove, thereby ensuring the stability of the connection between the tooth ring and the central column, and effectively preventing the tooth ring from having a radial displacement along the column body during operation, so as to ensure that the tooth plate can stably output power; Step II: Debugging: After assembly, the overall rotor structure is detected by a professional dynamic balance detection device. During the detection process, the positions that need to be counterweighted and the specific weights of the counterweights are marked. After the marking is completed, the toothed ring is removed from the outside of the cylinder. During the removal process, first remove the central cover, and then control the clamping plate to move towards the center point of the cylinder through the elastic connecting plate, so that the clamping plate disengages from the positioning groove, and then the toothed ring is removed from the outside of the cylinder. After removal, counterweights with marked weights are installed in the counterweight grooves corresponding to the marked positions. During the installation of the counterweights, it is necessary to ensure that the counterweights will not shake inside the counterweight grooves during the later rotation of the toothed ring. After the installation is completed, the toothed ring is installed on the outside of the cylinder again and tested again. If the test results do not meet the standards, disassemble and adjust the counterweights again. After the test results meet the standards, prepare for installation in the machine; Step III: Installation and operation: Install the overall rotor structure into the motor, and then install it in the machine for operation. Record, analyze, and detect various data during the operation of the motor. Qualified products can be loaded onto vehicles and put into use.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, through the provided connector, clamping mechanism, and central column, the rotor shaft can be counterweighted according to the overall wear condition of the rotor shaft during later maintenance to ensure the balance during the rotation of the rotor shaft, thereby effectively preventing problems such as increased motor noise caused by wear of the rotor shaft due to later maintenance and operation; 2. In the present invention, a detachable toothed ring is provided, which can be replaced separately when the toothed ring is severely worn later, effectively reducing the later maintenance cost. And it is fixedly assembled through the clamping mechanism, which can improve the assembly stability and convenience, and further improve the operation stability after assembly through the further positioning of the central cover; 3. In the present invention, the low-noise new energy vehicle motor rotor structure realizes high-stability power output through the precise cooperation of the carefully designed toothed ring and central column. The positioning convex blocks of the toothed ring are adapted to the transverse grooves of the cylinder, combined with the precise control of the clamping mechanism, ensuring the connection stability between the connector and the central column. In addition, through dynamic balance detection and counterweight adjustment, the vibration and noise during the high-speed rotation of the rotor are effectively reduced, improving the operation efficiency and service life of the motor, and meeting the stringent requirements of new energy vehicles for motor performance; 4. In the present invention, the cooperation between the central cover and the control column, as well as the inclined groove design of the clamping plate, enable the clamping mechanism to be flexibly adjusted, facilitating the installation and positioning of the toothed ring. These designs not only improve the assembly efficiency of the motor rotor but also ensure the high-efficiency and low-noise operation of the motor under various working conditions, enhancing the driving comfort and performance of new energy vehicles. Description of the Drawings
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is the present invention Figure 2 Schematic diagram of the structure at position A in; Figure 4 Schematic diagram of the connector structure of the present invention; Figure 5 Schematic diagram of the center cover structure of the present invention; Figure 6 Schematic diagram of the engaging mechanism structure of the present invention; Figure 7 Schematic diagram of the installation position structure of the telescopic guide post of the present invention; Figure 8 Schematic diagram of the control board structure of the present invention.
[0016] In the figure: 1, rotor core; 2, end ring; 3, aluminum bar; 4, rotor blade; 5, bearing; 6, connector; 61, tooth ring; 62, tooth; 63, positioning bump; 64, positioning groove; 65, counterweight groove; 7, rotor shaft; 8, center cover; 81, circular plate; 82, control column; 83, external thread; 9, engaging mechanism; 91, clamping plate; 92, elastic connecting plate; 93, control board; 931, flat plate; 932, inclined block; 933, extrusion groove; 94, inclined groove; 95, telescopic guide post; 10, center column; 101, column body; 102, blind hole; 103, transverse groove; 104, internal thread; 105, through groove. Detailed implementation manners
[0017] Please refer to Figure 1-8 , the present invention provides a technical solution: A low-noise motor rotor structure for new energy vehicles and its usage method, including a rotor core 1, end rings 2, aluminum bars 3, and rotor blades 4. Aluminum bars 3 are staggeredly arranged between rotor cores 1. End rings 2 are installed at both ends of the rotor core 1 and the aluminum bars 3. A rotor shaft 7 is installed in the middle of the end rings 2. Bearings 5 are installed on the outer sides of both ends of the rotor shaft 7 by interference fit. A central column 10 is fixedly welded to one end of the rotor shaft 7; a central cover 8 is installed inside the middle of the central column 10. A connector 6 for power output is installed on the outer side of the central column 10 through a clamping mechanism 9; the connector 6 includes a tooth ring 61. Tooth teeth 62 are evenly distributed in a ring shape on the outer side of the tooth ring 61. Positioning protrusions 63 are integrally formed on both sides of the inner side of the tooth ring 61. Counterweight grooves 65 are distributed in a ring shape on the inner side of the end of the tooth ring 61 away from the rotor core 1. A positioning groove 64 is opened on the inner side of the tooth ring 61. The central cover 8 includes a circular plate 81. A control column 82 is fixedly connected to one end of the circular plate 81. External threads 83 are opened on the outer side of the circular plate 81. The clamping mechanism 9 includes clamping plates 91. Elastic connecting plates 92 are provided between the clamping plates 91. The clamping plates 91 on the same side are connected through telescopic guide columns 95. Control plates 93 are provided inside the clamping plates 91 on the same side. Oblique grooves 94 are opened inside the clamping plates 91. The central column 10 includes a column body 101. A blind hole 102 is opened in the middle of the inner side of one end of the column body 101. Internal threads 104 are opened inside the blind hole 102. A transverse groove 103 is opened on the outer side of the column body 101. A through groove 105 is opened inside the column body 101.
[0018] As a further technical solution of this scheme, there are several rotor blades 4. The included angle between the rotor blades 4 and the central axis of the end ring 2 is 35°. The rotor blades 4 are evenly distributed in a ring shape on the side of the end ring 2 away from the rotor core 1. There are two end rings 2, and the end rings 2 are parallel to each other. Through the above settings, the stability of the motor rotor structure during operation can be further improved; As a further technical solution of this scheme, the tooth ring 61 and the rotor shaft 7 are coaxial. There are two positioning protrusions 63, and the positioning protrusions 63 are parallel to each other. The length of the positioning protrusions 63 is equal to the length of the tooth ring 61. The two sides of the end face of the positioning protrusions 63 close to the central axis of the tooth ring 61 are arc-shaped. Through the above settings, stable adaptation between the tooth ring 61 and the main body 101 can be ensured; As a further technical solution of this scheme, there are two positioning grooves 64. The positioning grooves 64 are arc-shaped. The positioning grooves 64 are arranged on the upper and lower sides between the two positioning protrusions 63. There are several counterweight grooves 65. The counterweight grooves 65 are distributed in three rows in a ring shape inside the tooth ring 61, and the counterweight grooves 65 are arranged on the side of the positioning grooves 64 close to the end ring 2. The depth of the counterweight grooves 65 is one-half of the thickness of the tooth ring 61. Through the provided positioning grooves 64, positioning of the clamping plates 91 can be carried out in the later stage; As a further technical solution for the implementation of this solution, the circular plate 81 is adapted to the internal thread 104 provided in the blind hole 102 through the external thread 83. The circular plate 81 and the column 101 are spirally connected through the external thread 83 and the internal thread 104. The circular plate 81 and the control column 82 are on the same axis. The outer edge of the end of the control column 82 away from the circular plate 81 is arc-shaped. The end face of the circular plate 81 away from the control column 82 and the end face of the column 101 away from the end ring 2 are arranged in the same vertical plane. Through the above-mentioned center cover 8, the engaging mechanism 9 can be further positioned; As a further technical solution for the implementation of this solution, there are four clamping plates 91. The clamping plates 91 are connected to the column 101 through the through slots 105. The clamping plates 91 are connected to the toothed ring 61 through the positioning slots 64. There are four elastic connecting plates 92 connecting between the clamping plates 91. The upper and lower clamping plates 91 are connected through the elastic connecting plates 92. There is no contact between the elastic connecting plates 92. An arc-shaped groove is provided in the middle of the end of the clamping plate 91 close to the elastic connecting plate 92. The end of the clamping plate 91 away from the elastic connecting plate 92 is an arc surface. Through the above-mentioned multiple clamping plates 91, the fitting degree between the engaging mechanism 91 and the positioning slot 64 and the blind hole 102 can be improved; As a further technical solution for the implementation of this solution, the control plate 93 includes a flat plate 931. Oblique blocks 932 with a triangular vertical cross-section are fixedly connected to both ends of the flat plate 931. There are several oblique blocks 932. An extrusion groove 933 is opened on the inner side of one end of the flat plate 931. The oblique blocks 932 correspond to the oblique grooves 94 one by one. The vertical cross-section of the oblique groove 94 is a right trapezoid. The depth of the oblique groove 94 is equal to the vertical projection length of the oblique block 932. The flat plate 931 is in close contact with the control column 82 through the extrusion groove 933. Through the above settings, the position of the clamping plate 91 can be stably controlled and limited; As a further technical solution for the implementation of this solution, the blind hole 102 and the through slot 105 are communicated. The included angle between the central axis of the blind hole 102 and the perpendicular bisector of the through slot 105 is 90°. Through the above settings, the engaging mechanism 9 can be stably installed; As a further technical solution for the implementation of this solution, there are two transverse grooves 103. The edge positions of the transverse grooves 103 are all arc-shaped. The transverse grooves 103 correspond to the positioning protrusions 63 one by one, and the transverse grooves 103 are adapted to the positioning protrusions 63. Through the above settings, the connection stability between the connector 6 and the central column 10 can be further improved; As a further technical solution for the implementation of this solution, the following steps are included: Step Ⅰ: Assembly: First, install the clamping mechanism 9 inside the central column 10. During the installation process, install the clamping plate 91 inside the column body 101 through the through groove 105. After the installation is completed, install the toothed ring 61 outside the column body 101. During the installation process, the positioning protrusion 63 integrally formed inside the toothed ring 61 is adapted to the transverse grooves 103 opened on both sides of the column body 101, and the positioning groove 64 opened inside the toothed ring 61 is adapted to the arc surface side of the clamping plate 91 to complete the assembly between the toothed ring 61 and the column body 101. Then, install the central cover 8 inside the blind hole 102. After the installation is completed, control the column 82 to squeeze the flat plate 931. After the flat plate 931 is squeezed, control the clamping plates 91 arranged on both sides to be closely attached to the inner walls of the positioning groove 64 and the through groove 105 respectively, thereby ensuring the stability of the connection between the toothed ring 61 and the central column 10, and effectively preventing the toothed ring 61 from having a radial displacement along the column body 101 during operation, so as to ensure that the toothed plate 61 can stably output power; Step Ⅱ: Debugging: After the assembly is completed, use a professional dynamic balance detection device to detect the overall rotor structure. During the detection process, mark the positions that need to be weighted and the specific weights of the weights. After the marking is completed, remove the toothed ring 61 from the outside of the column body 101. During the removal process, first remove the central cover 8, and then control the clamping plate 91 to move towards the center point of the column body 101 through the elastic connecting plate 92, so that the clamping plate 91 is disengaged from the positioning groove 64, and then remove the toothed ring 61 from the outside of the column body 101. After removal, install the weights with the marked weights inside the weight slots 65 corresponding to the marked positions. During the installation of the weights, it is necessary to ensure that the weights will not shake inside the weight slots 65 during the later rotation of the toothed ring 61. After the installation is completed, install the toothed ring 61 on the outside of the column body 101 again and conduct the test again. If the test results are not up to standard, disassemble and adjust the weights again. After the test results meet the standard, prepare for installation; Step Ⅲ: Installation and operation: Install the overall rotor structure inside the motor, and then install and operate it. Record, analyze, and detect various data during the operation of the motor. Qualified products can be loaded onto vehicles and put into use.
[0019] In this text, specific examples are used to illustrate the principle and implementation mode of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, embellishments or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, embellishments, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.
Claims
1. A low-noise motor rotor structure for new energy vehicles, comprising a rotor core (1), end rings (2), aluminum bars (3) and rotor blades (4), characterized in that: Aluminum bars (3) are arranged alternately between the rotor cores (1), end rings (2) are installed at both ends of the rotor cores (1) and the aluminum bars (3), a rotor shaft (7) is installed in the middle of the end rings (2), bearings (5) are installed on the outer sides of both ends of the rotor shaft (7) through interference fit, and a center column (10) is welded and fixed at one end of the rotor shaft (7); A center cover (8) is installed on the inner side of the center column (10), and a connector (6) for power output is installed on the outer side of the center column (10) via a snap-fit mechanism (9); The connector (6) comprises a gear ring (61), the outer side of the gear ring (61) is provided with teeth (62) evenly distributed in an annular shape, positioning protrusions (63) are integrally formed on both sides of the inner side of the gear ring (61), a counterweight groove (65) is distributed in an annular shape on the inner side of one end of the gear ring (61) away from the rotor core (1), a positioning groove (64) is provided on the inner side of the gear ring (61), the center cover (8) comprises a circular plate (81), one end of the circular plate (81) is fixedly connected to a control column (82), the outer side of the circular plate (81) is provided with an external thread (83), and the engaging mechanism (9) comprises a clamping plate (91). An elastic connecting plate (92) is provided between the card plates (91), the card plates (91) on the same side are connected by a telescopic guide column (95), a control plate (93) is provided inside the card plates (91) on the same side, an inclined groove (94) is provided inside the card plates (91), the central column (10) comprises a column (101), a blind hole (102) is provided in the middle of the inner side of one end of the column (101), an internal thread (104) is provided inside the blind hole (102), a transverse groove (103) is provided on the outer side of the column (101), and a through groove (105) is provided on the inner side of the column (101).
2. The structure of a motor rotor for a new energy vehicle with low noise according to claim 1, wherein: The rotor blades (4) are provided in plurality, the angle formed between the rotor blades (4) and the central axis of the end ring (2) is 35°, the rotor blades (4) are distributed in an annular shape and at equal intervals on a side of the end ring (2) away from the rotor core (1), the end rings (2) are provided with two, and the end rings (2) are parallel to each other.
3. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: The gear ring (61) and the rotor shaft (7) share the same axis, two positioning protrusions (63) are provided, and the positioning protrusions (63) are parallel to each other, the length of the positioning protrusions (63) is equal to the length of the gear ring (61), and the two sides of the end surfaces of the positioning protrusions (63) close to the central axis of the gear ring (61) are arranged in an arc shape.
4. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: There are two positioning grooves (64), the positioning grooves (64) are arranged in an arc shape, and the positioning grooves (64) are arranged on the upper and lower sides between the two positioning protrusions (63). There are a plurality of counterweight grooves (65), and the counterweight grooves (65) are arranged in three rows in an annular shape inside the gear ring (61). The counterweight grooves (65) are arranged on a side of the positioning groove (64) close to the end ring (2), and the depth of the counterweight grooves (65) is half the thickness of the gear ring (61).
5. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: The circular plate (81) is adapted to the internal thread (104) provided in the blind hole (102) through the external thread (83). The circular plate (81) and the column body (101) are spirally connected through the external thread (83) and the internal thread (104). The circular plate (81) and the control column (82) are on the same axis. The outer edge of the end of the control column (82) away from the circular plate (81) is arc-shaped. The end face of the circular plate (81) away from the control column (82) and the end face of the column body (101) away from the end ring (2) are arranged in the same vertical plane.
6. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: Four clamping plates (91) are provided. The clamping plates (91) are connected to the column body (101) through the through slots (105). The clamping plates (91) are connected to the toothed ring (61) through the positioning slots (64). Four elastic connecting plates (92) connecting the clamping plates (91) are provided. The upper and lower clamping plates (91) are connected through the elastic connecting plates (92). The elastic connecting plates (92) are not in contact with each other. An arc-shaped groove is provided in the middle of the end of the clamping plate (91) close to the elastic connecting plate (92). The end of the clamping plate (91) away from the elastic connecting plate (92) is an arc surface.
7. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: The control plate (93) includes a flat plate (931). Oblique blocks (932) with a triangular cross-section are fixedly connected to both ends of the flat plate (931). A number of the oblique blocks (932) are provided. An extrusion groove (933) is opened on the inner side of one end of the flat plate (931). The oblique blocks (932) correspond to the oblique grooves (94) one by one. The cross-section of the oblique groove (94) is a right trapezoid. The depth of the oblique groove (94) is equal to the vertical projection length of the oblique block (932). The flat plate (931) is in close contact with the control column (82) through the extrusion groove (933).
8. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: The blind hole (102) and the through slot (105) are communicated. The included angle between the central axis of the blind hole (102) and the perpendicular bisector of the through slot (105) is 90°.
9. A low-noise new energy vehicle motor rotor structure according to claim 1, characterized in that: Two transverse grooves (103) are provided. The edge positions of the transverse grooves (103) are both arc-shaped. The transverse grooves (103) correspond to the positioning convex blocks (63) one by one, and the transverse grooves (103) are adapted to the positioning convex blocks (63).
10. A method of using a low-noise new energy vehicle motor rotor structure according to any one of claims 1-9, characterized in that: It includes the following steps: Step Ⅰ: Assembly: First, install the clamping mechanism (9) inside the central column (10). During the installation process, install the clamping plate (91) inside the column body (101) through the through slot (105). After the installation is completed, install the gear ring (61) outside the column body (101). During the installation process, the positioning bump (63) integrally formed inside the gear ring (61) is adapted to the transverse slots (103) opened on both sides of the column body (101), and the positioning slot (64) opened inside the gear ring (61) is adapted to the arc surface side of the clamping plate (91), so as to complete the assembly between the gear ring (61) and the column body (101). Then, install the central cover (8) inside the blind hole (102). After the installation is completed, the control column (82) squeezes the flat plate (931). After the flat plate (931) is squeezed, the clamping plates (91) arranged on both sides are respectively in close contact with the inner walls of the positioning slot (64) and the through slot (105), thereby ensuring the stability of the connection between the gear ring (61) and the central column (10), and effectively preventing the problem that the gear ring (61) has a radial displacement along the column body (101) during operation, so as to ensure that the gear plate (61) can stably output power; Step Ⅱ: Debugging: After the assembly is completed, use a professional dynamic balance detection device to detect the overall rotor structure. During the detection process, mark the positions that need to be weighted and the specific weights of the weights. After the marking is completed, remove the gear ring (61) from the outside of the column body (101). During the removal process, first remove the central cover (8), and then control the clamping plate (91) to move towards the center point of the column body (101) through the elastic connecting plate (92), so that the clamping plate (91) disengages from the positioning slot (64), and then remove the gear ring (61) from the outside of the column body (101). After removal, install the weights with the marked weights inside the weight slots (65) corresponding to the marked positions. During the installation of the weights, it is necessary to ensure that the weights do not shake inside the weight slots (65) during the subsequent rotation of the gear ring (61). After the installation is completed, install the gear ring (61) outside the column body (101) again and conduct another test. If the test results do not meet the standards, disassemble and adjust the weights again. After the test results meet the standards, prepare for installation; Step Ⅲ: Installation and operation: Install the overall rotor structure inside the motor, and then install it and operate it. Record, analyze, and detect various data during the operation of the motor. Qualified products can be loaded onto vehicles and put into use.