CN-122001144-A - Manufacturing method of integrated asynchronous speed regulating motor

Abstract

The invention relates to the technical field of new energy electric automobile power systems, and particularly provides an integrated permanent magnet speed regulator and power motor asynchronous speed regulating motor aiming at the defects of complex machinery, high energy consumption, short endurance, slow braking response and the like caused by independent arrangement of a transmission and an ABS in the existing electric automobile power system. The 'permanent magnet speed regulator and permanent magnet synchronous motor' deep integrated coaxial layout is adopted to configure double/three magnetic discs to adapt to different vehicle types. The motor is matched with a rare earth permanent magnetic disk, a 0.01mm precision air gap adjusting mechanism and a double magnetic shielding and integrated cooling system, torque/rotating speed stepless control is realized through magnetic coupling and precision air gap adjustment, and the traditional speed changer and ABS are synchronously replaced. The transmission efficiency is more than or equal to 95%, the energy consumption is reduced by 25% -66%, the endurance is increased by more than 35%, the ABS response is less than 100ms, the weight is reduced by 60%, the vibration and magnetic noise are obviously reduced, the structure is simplified, the failure rate is reduced, and the method is suitable for various electric automobile power systems.

Inventors

• HE XIANGYU

Assignees

• 何祥宇
• 广东空天抗扰技术研究院有限公司

Dates

Publication Date

20260508

Application Date

20260116

Claims (6)

1. 1. The integrated asynchronous speed regulating motor is characterized by comprising a motor front end cover, a motor stator, a motor rotor, a permanent magnet speed regulator disk assembly and a speed regulator rear end cover which are sequentially arranged along the same axis, wherein the motor rotor is integrally connected with the permanent magnet speed regulator disk assembly, and the size of an air gap between the disk assemblies is regulated through an air gap regulating mechanism, so that stepless regulation of torque and rotating speed is realized, and meanwhile, the traditional speed changer and an ABS (anti-lock braking system) are replaced.
2. 2. An integrated asynchronous motor according to claim 1, wherein the disk assembly is in a two-piece configuration (permanent magnet disk-conductor disk-permanent magnet disk) or a three-piece configuration (permanent magnet disk-conductor disk-permanent magnet disk).
3. 3. The integrated asynchronous speed regulating motor according to claim 1, wherein the air gap regulating mechanism consists of a servo motor, a ball screw and a guide rail, the regulating precision is 0.01mm, and the response time is less than 100ms.
4. 4. The integrated asynchronous speed regulating motor according to claim 1, wherein the permanent magnetic disk is made of rare earth permanent magnetic material (Curie temperature is more than or equal to 120 ℃), and magnets are arranged in N, S-pole alternation or 90-degree Halbach arrays.
5. 5. An integrated asynchronous speed regulating motor according to claim 1, wherein a double magnetic shielding structure (permalloy active shielding + symmetrical magnetic circuit passive shielding) and an integrated cooling system (motor water cooling/oil cooling + disk assembly air cooling/liquid cooling) are provided.
6. 6. The integrated asynchronous speed regulating motor according to claim 1, wherein closed loop control of air gap adjustment, torque control and ABS anti-lock function is realized through a distributed control system, and the response time of the ABS function is less than 100ms.

Description

Manufacturing method of integrated asynchronous speed regulating motor Technical Field The invention relates to the technical field of new energy electric automobile power systems, in particular to an integrated permanent magnet speed regulator and power motor asynchronous speed regulating motor which is suitable for power transmission, speed change and braking control scenes of electric automobiles. Background State of the art In the current electric automobile power system, the traditional speed changer and the ABS are of independent mechanical structures, so that the mechanical complexity of the automobile is high, the energy consumption is increased, the efficiency is reduced when the motor runs under variable working conditions, the energy loss is 15-20% under frequent start-stop and variable speed working conditions, and the endurance mileage is seriously affected. The permanent magnet speed regulator has been applied to the industrial field by virtue of advantages of non-contact transmission, maintenance-free, high efficiency, energy saving and the like, but has no mature product and no technology disclosed at home and abroad at present in the technical scheme of deep integration with an electric automobile power motor and realization of speed change and anti-lock function through air gap adjustment. Defects of the prior art The traditional power system has the advantages of more mechanical parts, large friction loss, high energy consumption, limited endurance mileage, impact on gear shifting of a transmission, poor driving comfort, obvious vibration and noise, low response speed (more than millisecond level) of an ABS (anti-lock braking system) system, to-be-lifted braking safety, separated design of a motor and a speed regulator, large occupied space, low system integration level and high failure rate. Disclosure of Invention Object of the Invention The integrated structure replaces a traditional transmission and an ABS system, simplifies a power system, realizes stepless adjustment of torque and rotating speed, reduces energy consumption, improves the endurance mileage of an electric automobile, optimizes driving comfort, reduces vibration and magnetic noise, improves braking response speed, and enhances driving safety. Core technical conception The deep integrated coaxial layout of the permanent magnet speed regulator and the power motor utilizes a magnetic coupling mechanism and a precise air gap regulating system to realize stepless control of torque/rotation speed, synchronously replaces the traditional speed changer and an ABS system, and combines the magnetic shielding, efficient cooling and noise reduction design to solve the defects in the prior art. Details of technical features The coaxial type motor is characterized by comprising a motor front end cover, a motor stator, a motor rotor, a permanent magnet speed regulator disk assembly and a speed regulator rear end cover in sequence along the axial direction, the axial size is compact, the motor is suitable for being arranged on a chassis of an electric automobile, the disk configuration comprises two schemes- ①, namely a symmetrical structure of 'permanent magnet disk-conductor disk-permanent magnet disk', which is suitable for small and medium-sized electric automobiles, and ②, namely an axial arrangement structure of 'permanent magnet disk-conductor disk-permanent magnet disk', which is suitable for large or high-performance electric automobiles. Key component technical features The motor body adopts a permanent magnet synchronous motor, the power is 30-200kW, a stator is a distributed winding, a neodymium-iron-boron permanent magnet (coercive force is more than or equal to 1200 kA/m) is arranged in a rotor, the motor meets the GB/T18188-2024 standard, the power density is more than or equal to 4.0kW/kg, a magnetic disk assembly adopts rare earth permanent magnet materials (the Curie temperature is more than or equal to 120 ℃), the magnets are alternately arranged in N, S poles or in a 90-degree Halbach array, the conductor magnetic disk is made of copper/aluminum materials and is 5-20mm in thickness and provided with a heat dissipation groove, an air gap adjusting mechanism consists of a servo motor, a ball screw and a guide rail, the adjusting precision is 0.01mm, the response time is less than 100ms, the air gap size is changed by axially moving the magnetic disk assembly, an auxiliary system comprises a high-precision angular contact ball bearing/conical roller bearing (oil/oil mist lubrication), a motor water cooling/oil cooling+magnetic disk assembly/air cooling integrated cooling system, and a permalloy active shielding+symmetric magnetic circuit passive shielding double magnetic shielding structure. Connection relation and control logic The mechanical connection comprises a motor rotor shaft extending to a speed regulator input shaft and connected with a magnetic disk assembly through a spline/key, an air gap adjusting mechanis