Oblique pole rotor motor
By designing a skew-pole rotor motor, the problems of noise, torque fluctuation, and air gap magnetic field distribution in new energy vehicle motors have been solved, thereby improving the stability and reliability of the motor and extending its service life.
Patent Information
- Application Number
- CN202520102288.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing new energy vehicle motors have shortcomings in terms of noise, torque fluctuation and air gap magnetic field distribution, especially the stability and reliability of direct-pole motors.
The design employs a skewed-pole rotor motor, which includes a rotor core with non-uniform and unequal air gaps, segmented magnet design, and skewed pole slots. Combined with brass counterweights with a density of 8.3 g/cm³ and SUS304 end plates, it optimizes cogging torque, reduces vibration noise and magnetic loss, and improves insulation performance.
It improves the stability and reliability of the motor at high speeds, extends its service life, and reduces noise and torque pulsation.
Smart Images
Figure CN223744472U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor field, especially a kind of oblique pole rotor motor. BACKGROUND
[0002] The development of new energy vehicles meets people's pursuit of high-quality life to a great extent. With the continuous progress of science and technology, people's requirements for travel are no longer limited to reaching from one place to another, but pay more attention to the comfort, convenience and intelligent degree of travel. The motor is the "heart" of new energy vehicles, including brush DC motor, hydraulic drive cooling fan system, brushless DC motor, series motor, shunt motor, induction motor, AC asynchronous motor, AC synchronous motor and axial flow motor. Most of the automobile air conditioner motors on the market are straight pole motors, which have shortcomings in noise, torque fluctuation and air gap magnetic field distribution.
[0003] Therefore, it is necessary to provide an oblique pole rotor motor to solve the above problems. INVENTION CONTENTS
[0004] The main purpose of the utility model is to provide an oblique pole rotor motor, which can effectively solve the problems in the background art.
[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0006] An oblique pole rotor motor includes a stator assembly and a rotor assembly. The stator assembly includes a reverse lead wire side, a stator core, a slot-in phase, an insulation slot paper, a winding, a lead wire side and a second terminal shell.
[0007] The rotor assembly includes a first counterweight, a first end plate, a rotor core, a magnetic steel, a rivet, a second end plate and a second counterweight.
[0008] Preferably, the reverse lead wire side is installed at the bottom of the stator core, the slot-in phase is inserted into the inner cavity of the stator core, and the insulation slot paper is inserted at the slot-in phase. The first end plate is M238 coiled material.
[0009] Preferably, the insulation slot paper is used to insulate and protect the winding from damage and prevent copper wire breakage. The insulation slot paper is automatically inserted by machine and cooperates with the winding to isolate the contact between the winding and the stator core. The insulation slot paper is 3mm higher than the two sides of the stator core to increase the creepage distance between the stator core and the insulation slot paper.
[0010] Preferably, the winding is installed in the inner cavity of the stator core, the lead wire side is installed on the top of the stator core, the second terminal shell is installed on the top of the lead wire side, the stator core is made of silicon steel sheet, the stator core is connected with each silicon steel sheet through a self-clamping point, and the outer side of the stator core is provided with air channel hole positions.
[0011] Preferably, the rotor core is stacked by 0.35mm silicon steel sheet, each silicon steel sheet is connected through a self-clamping point, the outer diameter of the rotor core adopts a non-uniform unequal air gap design for optimizing the cogging torque and reducing vibration noise, the rotor core is provided with a magnetic steel slot, the rotor core and the magnetic steel are designed in a segmented manner and are divided into two sections, i.e., an upper rotor core and a magnetic steel and a lower rotor core and a magnetic steel, the gap between the rotor core and the magnetic steel slot of each section is 2mm for magnetic path dredging, reducing local magnetic density saturation and reducing iron loss, the center line of the upper magnetic steel slot and the center line of the lower magnetic steel slot are offset by 7.5° through the shaft center to form an inclined pole slot, and the magnetic steel is offset by 7.5° along the inclined pole slot.
[0012] Preferably, the rivet is used for connecting the second counterweight, the second end plate, the rotor core, the first end plate and the first counterweight, the first counterweight and the second counterweight are made of brass with a density of 8.3g / cm³, the rotor assembly can reach a rated balance amount, and the noise caused by vibration is reduced, the first end plate and the second end plate are used for preventing the magnetic steel from being thrown out during high-speed operation of the motor, the first end plate and the second end plate are made of SUS304, the rotor core, the first end plate and the second end plate are all provided with weight reduction holes at the same positions, and the end plate adopts the same design hole position as the rotor core, which is beneficial to rotor ventilation and cooling.
[0013] Compared with the prior art, the utility model has the advantages of the following beneficial effects:
[0014] The inclined pole rotor motor improves the stability and reliability of the motor during high-speed operation, improves the overall insulation effect of the motor, and increases the service life of the whole machine.
[0015] The inclined pole rotor motor is connected with the terminal post through the second terminal shell, the stator core is supported, the winding, the insulation slot paper and the phase-to-phase in the slot are used through the lead wire side, the lead wire of the winding is fixed through the reverse lead wire side, the core excitation, the transmission of electric energy and the heat resistance are used through the winding, the stator core can be more effectively spaced from the winding, the insulation protection and the prevention of copper wire damage are realized through the phase-to-phase in the slot, and the insulation slot paper is automatically inserted by the machine and cooperates with the lead wire side and the reverse lead wire side to cut off the contact between the stator core and the winding.
[0016] The inclined pole motor, through the first counterweight and the second counterweight, can reduce the vibration and noise caused by the vibration of the motor at high speed, the counterweight is made of brass with a density of 8.3 g / cm³, so that the overall rotor assembly can reach the rated balance amount, thereby reducing the noise caused by vibration, through the first end plate and the second end plate, the magnetic steel can be prevented from being thrown out during high-speed operation of the motor, the first end plate, the rotor core and the second end plate are tightly attached through rivets, the first end plate, the rotor core and the second end plate are provided with weight reduction holes, which can reduce weight and facilitate ventilation and cooling, the outer diameter of the rotor core is designed as non-uniform unequal air gap, which can optimize the motor tooth slot torque, reduce vibration noise, the segmented design of the rotor core and the magnetic steel is beneficial to the dredging of the magnetic circuit, reduces the local magnetic density saturation and reduces the iron loss, and the inclined pole slot is beneficial to reducing the tooth slot torque and harmonic content of the motor, and has outstanding performance in reducing torque ripple, improves the stability and reliability of the motor under high-speed operation. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is the overall structure schematic diagram of the utility model;
[0018] Fig. 2 It is the structure schematic diagram of the stator assembly of the utility model;
[0019] Fig. 3 It is the structure schematic diagram of the rotor assembly of the utility model.
[0020] In the drawing: 1, stator assembly;2, rotor assembly;3, reverse lead wire side;4, stator core;5, slot inner phase;6, insulation slot paper;7, winding;8, lead wire side;9, second terminal shell;10, first counterweight;11, first end plate;12, rotor core;13, magnetic steel;14, rivet;15, second end plate;16, second counterweight. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0022] As Figs. 1-3As shown, a skew rotor motor includes a stator assembly 1 and a rotor assembly 2, the stator assembly 1 includes a reverse lead wire side 3, a stator core 4, a slot phase 5, an insulation slot paper 6, a winding 7, a lead wire side 8 and a second terminal shell 9, the rotor assembly 2 includes a first counterweight 10, a first end plate 11, a rotor core 12, a magnetic steel 13, a rivet 14, a second end plate 15 and a second counterweight 16, the reverse lead wire side 3 is installed at the bottom of the stator core 4, the slot phase 5 is inserted into the inner cavity of the stator core 4, the insulation slot paper 6 is inserted at the slot phase 5, the first end plate 11 is M238 coiled material, the insulation slot paper 6 is used to separate the winding 7 and the winding 7, and has insulation protection and prevents copper wire damage, the insulation slot paper 6 is inserted automatically by a machine, cooperates with the winding 7 to separate the winding 7 and the stator core 4, the insulation slot paper 6 is 3mm higher than the two sides of the stator core 4, and is used to increase the creepage distance between the stator core 4 and the insulation slot paper 6, the winding 7 is installed in the inner cavity of the stator core 4, the lead wire side 8 is installed at the top of the stator core 4, the second terminal shell 9 is installed at the top of the lead wire side 8, the stator core 4 is a silicon steel sheet, the stator core 4 connects each silicon steel sheet through a self-clamping point, the outer side of the stator core 4 is provided with an air channel hole position, the rotor core 12 is stacked by 0.35mm silicon steel sheets, and each silicon steel sheet is connected through a self-clamping point, the outer diameter of the rotor core 12 adopts a non-uniform unequal air gap design, is used to optimize the cogging torque, and reduces vibration noise, the rotor core 12 is provided with a magnetic steel slot, the rotor core 12 and the magnetic steel 13 are designed in a segmented manner and are divided into two sections, the upper rotor core 12, the magnetic steel 13 and the lower rotor core 12, the magnetic steel 13, the gap between each rotor core 12 and the magnetic steel slot is 2mm, is used to dredge the magnetic circuit, reduce local magnetic density saturation, and reduce iron loss, the center line of the upper magnetic steel slot and the center line of the lower magnetic steel slot offset 7.5° through the shaft center to form a skew slot, the magnetic steel 13 offsets 7.5° along the skew slot, the rivet 14 is used to connect the second counterweight 16, the second end plate 15, the rotor core 12, the first end plate 11 and the first counterweight 10, the first counterweight 10 and the second counterweight 16 adopt yellow copper with a density of 8.3g / cm³, are used to make the rotor assembly 2 reach a rated balance amount and reduce noise caused by vibration, the first end plate 11 and the second end plate 15 are used to prevent the magnetic steel 13 from being thrown out in high-speed operation of the motor, the first end plate 11 and the second end plate 15 are made of SUS304, the rotor core 12, the first end plate 11 and the second end plate 15 are all provided with weight-reducing holes of the same position, and the end plate adopts the same design hole position as the rotor core, which is beneficial to rotor ventilation and cooling.
[0023] The stability and reliability of the motor in high-speed operation are improved, and the overall insulation effect of the motor is improved, so that the service life of the whole machine is increased, the second terminal shell 9 is arranged, which can be responsible for the connection with the terminal post, the lead wire side 8 is arranged, which can be used for supporting the stator core 4, the winding 7, the insulation slot paper 6 and the slot phase 5, the reverse lead wire side 3 is arranged, which facilitates the fixing of the outgoing line of the winding 7, the winding 7 is arranged, which can be used for core excitation, power transmission and heat resistance, the slot phase 5 makes the stator core 4 more effectively spaced from the winding 7, which can play the role of insulation protection and preventing copper wire damage, the insulation slot paper 6 is inserted automatically by the machine, and the contact between the stator core 4 and the winding 7 is cut off in cooperation with the lead wire side 8 and the reverse lead wire side 3, the first counterweight 10 and the second counterweight 16 are arranged, which can be used for the vibration and noise generated by the motor in high-speed operation, the counterweight material adopts brass with a density of 8.3g / cm³, so that the whole rotor assembly 2 can reach the rated balance amount, so as to reduce the noise caused by vibration, the first end plate 11 and the second end plate 15 are arranged, which can prevent the magnetic steel 13 from being thrown out in high-speed operation of the motor, the rivet 14 is arranged to tightly adhere the first end plate 11, the rotor core 12 and the second end plate 15, the first end plate 11, the rotor core 12 and the second end plate 15 are all provided with weight reduction holes, which can reduce weight and facilitate ventilation and cooling, the outer diameter of the rotor core 12 adopts a non-uniform unequal air gap design, which can optimize the motor tooth slot torque, reduce vibration noise, the segmented design of the rotor core 12 and the magnetic steel 13 is beneficial to the dredging of the magnetic circuit, reduces the local magnetic density saturation, reduces the iron loss, and the inclined pole slot is arranged, which is beneficial to reducing the tooth slot torque and harmonic content of the motor, and has excellent performance in reducing torque ripple, improving the stability and reliability of the motor in high-speed operation.
[0024] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A skewed-pole-rotor electric machine comprising a stator assembly (1), a rotor assembly (2), characterized in that: The stator assembly (1) comprises a reverse lead wire side (3), a stator core (4), a slot phase (5), an insulation slot paper (6), a winding (7), a lead wire side (8) and a second terminal shell (9); The rotor assembly (2) comprises a first counterweight (10), a first end plate (11), a rotor core (12), a magnetic steel (13), a rivet (14), a second end plate (15) and a second counterweight (16).
2. A skewed-pole rotor machine according to claim 1, characterized in that: The reverse lead wire side (3) is installed at the bottom of the stator core (4), the slot phase (5) is inserted into the inner cavity of the stator core (4), the insulation slot paper (6) is inserted at the slot phase (5), and the first end plate (11) is an M238 coiled material.
3. A skewed-pole rotor machine according to claim 2, characterized in that: The insulation slot paper (6) is used for spacing the winding (7) and the winding (7) to play an insulation protection and prevent copper wire damage effect, the insulation slot paper (6) is inserted automatically by a machine, cooperates with the winding (7) to cut off the contact between the winding (7) and the stator core (4), and the insulation slot paper (6) is higher than the two sides of the stator core (4) by 3mm, which is used for increasing the creepage distance between the stator core (4) and the insulation slot paper (6).
4. A skewed-pole rotor machine according to claim 1, characterized in that: The winding (7) is installed in the inner cavity of the stator core (4), the lead wire side (8) is installed at the top of the stator core (4), the second terminal shell (9) is installed at the top of the lead wire side (8), the stator core (4) is a silicon steel sheet, the stator core (4) connects each silicon steel sheet through a self-buckling point, and the outer side of the stator core (4) is provided with an air channel hole.
5. A skewed-pole rotor machine according to claim 1, characterized in that: The rotor core (12) is stacked by 0.35mm silicon steel sheets, each silicon steel sheet is connected through a self-buckling point, the outer diameter of the rotor core (12) is designed as a non-uniform unequal air gap, which is used for optimizing the cogging torque, reducing vibration noise, the rotor core (12) is provided with a magnetic steel slot, the rotor core (12) and the magnetic steel (13) are designed as a segmented type, which is divided into two sections, the upper rotor core (12), the magnetic steel (13) and the lower rotor core (12), the magnetic steel (13), the gap between the rotor core (12) and the magnetic steel slot is 2mm, which is used for magnetic path dredging, reducing local magnetic density saturation and reducing iron loss, the center line of the upper magnetic steel slot and the center line of the lower magnetic steel slot are offset by 7.5° through the shaft center to form an inclined pole slot, and the magnetic steel (13) is offset by 7.5° along the inclined pole slot.
6. A skewed-pole rotor machine according to claim 5, characterized in that: The rivet (14) is used for connecting the second counterweight (16), the second end plate (15), the rotor core (12), the first end plate (11) and the first counterweight (10), the first counterweight (10) and the second counterweight (16) adopt the brass with the density of 8.3 g / cm³, which is used for making the rotor assembly (2) reach the rated balance amount and reducing the noise caused by vibration, the first end plate (11) and the second end plate (15) are used for preventing the magnetic steel (13) from being thrown out in the high-speed operation of the motor, the material of the first end plate (11) and the second end plate (15) is SUS304, the rotor core (12), the first end plate (11) and the second end plate (15) are all provided with the weight-reducing holes with the same position, and the same design hole position of the rotor core is adopted on the end plate, which is beneficial to the ventilation of the rotor and the cooling.