235 results about "Motor efficiency" patented technology

The invention discloses a motor rotor core and a manufacturing method thereof, and belongs to the technical field of motor design and manufacturing. The rotor iron core comprises an iron core main body formed by laminating a plurality of punching sheets, and self-adhesive sheet end plates and arc-shaped pressing rings which are arranged at the two ends of the iron core main body. The self-adhesive sheet end plate is formed into a whole by heating, pressurizing and curing a self-adhesive sheet coated with epoxy resin or acrylic resin; the arc-shaped pressing ring is provided with a cambered surface structure, so that synchronous pressing in the axial direction and the radial direction can be achieved. And the iron core main body adopts a transposition lamination process, so that burrs of the punching sheet are uniformly distributed. Through chemical bonding of the end plates of the self-adhesive sheets, mechanical wedge-caulking of the arc-shaped pressing rings and error homogenization of transposition lamination, and through combination with the double-end tensioning screw subjected to insulation treatment, the problems that a traditional rotor iron core end punching sheet is prone to loosening, stress concentration and large eddy-current loss are caused by burrs, dynamic balance precision is poor and the like are effectively solved, and the service life of the rotor iron core end punching sheet is prolonged. And the structural rigidity, the operation stability and the motor efficiency of the rotor iron core are obviously improved.

The invention discloses a stator and rotor punching sheet and magnetic steel for a concentrated winding type frameless torque motor, and belongs to the technical field of concentrated winding type motors, the stator and rotor punching sheet comprises a rotor punching sheet, a stator punching sheet and magnetic steel, and the center of the rotor punching sheet is provided with a rotor iron core; the stator punching sheet is composed of yoke parts and tooth parts, the tooth parts are trapezoidal teeth, the tooth parts and the stator grooves are distributed at equal angles, the tooth parts and the stator grooves are alternately arranged, and the stator grooves are straight grooves; the inner side of the stator punching sheet is also provided with a rotor punching sheet and magnetic steel, the rotor punching sheet and the magnetic steel form a motor rotor, and the motor rotor is a surface-mounted rotor. According to the stator and rotor punching sheet and the magnetic steel for the concentrated winding type frameless torque motor, the winding grooves of the stator iron core are flat-bottom straight grooves, the flat copper wires are wound in the winding grooves, the flat wire coils are fixed to the tooth portions through glue, integral potting is carried out after fixing is completed, and compared with a traditional pear-shaped groove for containing round wire windings, the stator and rotor punching sheet is simple and firm in structure, high in groove fullness rate, high in motor efficiency and improved in stability.

The invention provides an efficiency optimization control method of a permanent magnet synchronous motor and related equipment. The method comprises the following steps: acquiring an output current of an inverter; constructing an inverter loss model based on the output current of the inverter and the inverter loss coefficient; constructing a total loss model based on the electromagnetic loss model, the inverter loss model and an equivalent conversion method; constructing a current population by taking the plurality of d-axis current values as individuals; and performing optimization solution based on the total loss model, the current population, a PID search algorithm and an artemisinin optimization algorithm to obtain a global optimal solution and control the permanent magnet synchronous motor. According to the scheme, the driver loss is added into the total loss model, and efficiency optimization can be carried out on the whole motor driving system; in order to solve the problem that a traditional method is not suitable for an IPMSM, a PID search algorithm and an artemisinin optimization algorithm are combined, parameter search is carried out on a motor efficiency optimal point by simulating an incremental PID controller adjusting mechanism, a global optimal solution is obtained, and therefore optimal control over the click efficiency is achieved.

The invention discloses a connecting structure of frameless torque motor flat wire windings, which belongs to the technical field of frameless torque motors, and comprises a stator consisting of a stator core and windings, the stator core comprises stator slots and tooth parts, each phase of winding consists of N sets of two groups of flat wire coils, the width of the flat wire coil is gradually increased from the inner diameter side of the stator to the outer diameter side of the stator, the current direction of the coil accords with regular circulation of positive and negative and positive, each set of coil connecting wire is formed by connecting in the same layer, and compared with a coil with the outer side and the inner side connected with a cross-layer wire, the end space can be reduced, and the end height can be reduced. Compared with a round wire winding, the connection structure of the frameless torque motor flat wire winding has the advantages that the slot fullness rate can be increased, the motor efficiency is high, the stability is improved, the space utilization in a stator slot can be greatly improved through a specific wire connection mode, the space waste in the slot is reduced, the windings are more compact, the overall consumables are less, and the connection and assembly are more convenient.

The invention discloses a pumping unit disc type permanent magnet motor multi-objective parameter optimization method, which relates to the technical field of motor design and optimization, and comprises the following steps: pre-establishing a multi-physical field coupling simulation model, constructing a disc type permanent magnet motor electromagnetic and thermal performance simulation model based on Motor-CAD and Maxwell software, and completing no-load, load and thermal performance tests of the motor. According to the method, the multi-physical field coupling simulation model is established in advance, so that comprehensive coupling analysis of electromagnetic and thermal performance of the disc type permanent magnet motor is realized, and high-precision data support is provided for multi-objective optimization; key structure parameters such as air gap length, slot opening width and the like are scientifically selected as optimization objects, maximization of motor efficiency and minimization of cogging torque are taken as core targets, and meanwhile, constraint requirements of output torque, back electromotive force and structure size are strictly adherent to each other, so that the pain point that multiple performances are difficult to consider at the same time in traditional optimization is effectively solved.

A self-adaptive cruise and torque distribution cooperative control method for a distributed driving electric vehicle comprises the following steps: establishing a two-degree-of-freedom vehicle dynamics model, combining a nonlinear tire model and a longitudinal load transfer effect, establishing a longitudinal motion control model, adopting a permanent magnet synchronous motor, introducing a motor efficiency MAP graph, and predicting a control algorithm by using a multi-target optimization model. And constructing a multi-state variable optimization model, dynamically adjusting a weight coefficient, introducing a relaxation factor, converting a problem into a quadratic programming problem, and generating an optimization control instruction. And designing a nonlinear model predictive controller to calculate an optimal direct yaw moment, determining a torque distribution coefficient, solving a target function for minimizing the total loss power of the motor through quadratic programming, and finding an optimal torque distribution coefficient to be applied to the motor. And a dynamic model, a longitudinal motion control model and a nonlinear model predictive controller are integrated to form a comprehensive vehicle control system and realize closed-loop control iteration, so that the safety, comfort and energy efficiency of the vehicle under complex working conditions are improved.

The invention relates to the technical field of motor driving control, in particular to a multi-motor cooperative driving and torque distribution method and system, and the method comprises the steps: collecting motor rotating speed, current, battery SOC and whole vehicle driving condition data in real time, carrying out the preprocessing of the collected multi-source data, eliminating the noise interference, and carrying out the signal feature extraction; a torque demand model is established based on vehicle driving condition classification, and the target torque of the whole vehicle is calculated; constructing a torque distribution model fusing working condition weights, combining motor efficiency characteristics, a battery SOC state and road condition resistance, and dynamically distributing the torque of each motor through an improved particle swarm optimization algorithm; and the state of the motor is monitored in real time in the driving process, torque distribution data of this time is input into a database after the vehicle is driven, and the torque demand model and torque distribution model parameters are optimized. Through working condition identification, intelligent algorithm distribution and dynamic optimization, the driving safety of the electro-tricycle and the driving efficiency of the motor are improved.

To provide a motor unit having high motor efficiency.SOLUTION: A motor unit 100 used for an electric vehicle includes a substrate 150, a motor 110 having a connector 111a, and a connector 250a directly attached to the substrate 150. The terminal 111a and the connector 250a are connected to each other by inserting one into the other in a direction parallel to the rotation axis of the motor 110.SELECTED DRAWING: Figure 4

The embodiment of the application discloses an energy-saving control method and device for an electric truck and a medium. The method comprises the following steps: determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck; obtaining current road condition information and accelerator pedal opening degree information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening degree information to obtain an actual motor efficiency high-efficiency area; starting a vehicle preset economy mode when the electric truck is in a non-full load state; obtaining a current rotating speed and a current torque of the electric truck when the vehicle is running in the vehicle preset economy mode; and adjusting a driving rotating state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle, so as to realize energy-saving control of the electric truck. Through the above method, the vehicle energy-saving can be realized while the power performance of the vehicle is maintained.

The invention discloses a stator coil type coil for a high-voltage shielding motor, a manufacturing method, a stator and a motor, the coil type coil comprises a continuous coil body made of a conductive material, the coil body comprises two parallel long straight line segments, bevel edge segments connected with the two ends of the straight line segments, and nose parts located at the joints of the bevel edge segments; the turn-to-turn insulating layer and the ground insulating layer are coated outside the conductive material; the coil body forms an integrated full-mould-pressing structure through mould pressing forming, the mould pressing forming range covers all the straight line sections and the bevel edge sections connecting the straight line sections and the nose part, and the nose part is not covered by a mould. The problems of difficulty in coil inserting of high-voltage and small-size stators, poor insulation reliability, low motor efficiency and the like are solved.

This invention relates to the field of industrial visual inspection technology and discloses a visual inspection device for surface defects of stator and rotor laminations after fine grinding. It aims to solve the problems of neglecting burr detection on the lamination surface of existing stator laminations, and the issues of reflective interference, efficiency bottlenecks, and difficulty in balancing reliability and high cycle time in double-sided inspection. The device includes a conveying component, a support frame, a limiting component, a visual recognition component, and a projection lamp. By vertically conveying and positioning the motor stator and rotor laminations and fixing them with a V-shaped clamp, combined with a dual inspection method of projected shadows and direct imaging of the lamination surface, it overcomes reflective interference and reduces the risk of false positives and missed detections. The visual inspection sensor dynamically scans to achieve continuous inspection, improving inspection cycle time and throughput, adapting to large-scale online production, avoiding missed detections, preventing insulation damage during lamination, and ensuring motor efficiency, reliability, and service life.

This invention discloses a stator assembly, a motor, a compressor, and a refrigeration device, relating to the field of induction motor technology. The stator assembly includes a stator core and stator windings. The stator core has Q stator slots, which are divided into large slots and small slots according to their cross-sectional area. The stator windings include concentrically wound main windings and auxiliary windings. The main windings have m coils, and the auxiliary windings have n coils. The main windings are numbered B1, B2, B3...B according to their winding span from largest to smallest. m The secondary windings are numbered A1, A2, A3, ... A, according to their winding span from largest to smallest. n ;B2 to B m In the stator slots where the coils are located, there is at least one single main winding slot, and each single main winding slot contains only the main winding. At least one of the single main winding slots is a minor slot; 16≦Q≦32, 3≦m≦14, 3≦n≦12. The technical solution provided by this invention is used to reduce the harmonic ratio of the motor, thereby reducing motor heat generation and improving motor efficiency.

The application relates to the technical field of vehicle control, and provides a permanent magnet synchronous motor output torque calculation method, device and computer program product. The method comprises the following steps: acquiring three-phase phase current signals, a high-voltage bus voltage signal and three-phase bridge arm drive duty cycle signals; based on the high-voltage bus voltage signal and the drive duty cycle signal, three-phase phase voltage signals are calculated; based on a pre-calibrated delay time mapping table, a delay parameter is determined; the three-phase phase current signals and the three-phase phase voltage signals are subjected to delay processing by using the delay parameter; based on the synchronized phase current signals and the phase voltage signals, the instantaneous electric power of the motor is calculated; based on a pre-calibrated efficiency mapping table, a corresponding motor efficiency value is determined; based on the instantaneous electric power, the motor efficiency value and the motor rotating speed, the output torque of the motor is calculated. The application compensates for calculation errors caused by signal transmission path differences and motor nonlinear characteristics, and improves the calculation accuracy of the output torque.

The invention relates to the field of brushless coreless motors, in particular to a lap winding stator structure of a brushless coreless motor. A stator structure of a brushless coreless motor lap winding comprises a toothless and slotless annular stator lamination, the stator lamination and the stator lap winding are separated by insulation paper on the inner wall of the stator lamination, and the stator lap winding is a cylindrical coreless lap winding. The motor has the beneficial effects that the structure is novel, the design is ingenious and simple, the hollow cup stator laminations are not provided with stator teeth, and the stator teeth do not occupy effective internal space in the stator, so that the slot space factor of a stator winding is improved, the current density of the motor is increased, and the efficiency of the motor is improved; the hollow cup stator laminations have no stator tooth tips, so that the outer diameter of the rotor can be correspondingly increased, and the output power and torque of the motor are increased; the hollow cup stator laminations are not provided with notches, and the magnetic flux is very stable when the rotor permanent magnets rotate.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of motors, the motor comprises a stator iron core and a rotor iron core, a stator punching sheet of the stator iron core comprises a stator yoke and a plurality of stator teeth distributed along the inner circumference of the stator yoke at intervals, two adjacent stator teeth and the stator yoke enclose a stator slot, the number of the stator slots is Q, the maximum outer circle contour radius of the stator punching sheet is R1, and the minimum inner circle contour radius of the stator punching sheet is R2. The rotor core is formed by stacking a plurality of rotor punching sheets, the rotor punching sheets are provided with a plurality of magnetic steel grooves along the circumferential direction, magnetic steel is installed in the magnetic steel grooves, so that the rotor core forms a plurality of magnetic poles which are alternately distributed along the circumferential direction, the number of the magnetic poles is 2P, and the greatest common divisor of 2P and Q is N; 2.5 < = N * (R2 / R1) < = 3.5, and the unit of R1 and R2 is mm. The technical scheme provided by the invention aims to improve the magnetic flux and rotational inertia of the motor under each magnetic pole of the motor, and further improve the power density and efficiency of the motor.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, the motor comprises a stator and a rotor, the rotor comprises permanent magnets and a rotor iron core, the rotor iron core is provided with a plurality of magnet grooves at intervals along the circumferential direction, the permanent magnets comprise a first permanent magnet, a second permanent magnet and a third permanent magnet, the magnet grooves comprise the first magnet groove, the second magnet groove and the third magnet groove, the first magnet groove, the second magnet groove and the third magnet groove jointly form a U shape, and the first magnet groove and the third magnet groove are communicated through the second magnet groove. The first permanent magnet, the second permanent magnet and the third permanent magnet are arranged in the first magnet groove, the second magnet groove and the third magnet groove respectively, the number of pole pairs of the rotor is P, the total number of the permanent magnets is 3P, and 3P is larger than or equal to 18 and smaller than or equal to 30. According to the technical scheme provided by the invention, the eddy-current loss in the permanent magnet is reduced, and the motor efficiency is improved.

This invention relates to the field of electric bus control, and particularly to a method, system, device, and medium for dual-motor coordinated control of an electric bus. The method involves acquiring multi-source state data of a pure electric bus during operation and constructing a working condition feature vector. Based on the working condition feature vector, historical operating data is subjected to working condition clustering analysis to establish a mapping relationship between working condition features and coordinated control parameters. A dual-motor coordinated control parameter optimization model is constructed, and under constraints of motor efficiency spectrum, battery power boundary, and system stability, the coordinated control parameters are optimized through multi-objective optimization to obtain the optimal coordinated control parameter vector. This enhances the adaptability of the vehicle control system under complex operating conditions, extends the service life of the motor and power system, improves the stability and reliability of the vehicle control system, reduces the impact of torque fluctuations, and improves passenger comfort.

The application discloses a simulation design method for energy-saving reconstruction of a permanent magnet synchronous reluctance motor, and aims to solve the problem of low matching degree of the existing reconstruction method and actual working conditions and limited energy efficiency improvement. The method collects and analyzes full working condition parameters, constructs a three-dimensional magnetic circuit-structure coupling simulation model, identifies key loss parameters and sets multi-dimensional constraint conditions, adopts multi-parameter collaborative optimization and an improved branch and bound method for optimization, and performs engineering adaptation and verification after screening the optimal scheme through simulation verification. The application realizes optimal energy consumption of the motor in full working conditions, improves the motor efficiency by more than 15% after reconstruction, and ensures that the power factor is not less than 0.92, and meanwhile, the reconstruction cost and resource utilization rate are considered, different types of motors are adapted, and scientific and efficient technical support is provided for large-scale energy-saving reconstruction of the permanent magnet synchronous reluctance motor.

This invention relates to the field of electric motors, specifically to an electric motor rotor and a permanent magnet synchronous motor. The electric motor rotor includes a rotor core with multiple magnetic poles. Each magnetic pole has a first magnetic slot unit and a magnetic pole centerline d-axis corresponding to the first magnetic slot unit. The first magnetic slot unit is filled with a first permanent magnet, which forms a first magnetic flux. On a cross-section perpendicular to the centerline of the rotor core, the first magnetic flux has a concave side and a convex side opposite to the concave side in the d-axis direction. The concave side of the first magnetic flux is close to the center of the rotor core. This improves magnetic flux, increases motor efficiency, reduces motor harmonics, and reduces motor operating noise.

The utility model belongs to the technical field of compressors, and particularly discloses a permanent magnet motor stator assembly of a mixed magnetic conductive material for a compressor and a refrigeration compressor. The whole permanent magnet motor stator assembly adopts a sandwich type structure, the outer layer is the stator iron core made of the silicon steel material, and the silicon steel material provides appearance support; the mounting grooves are formed in the connecting positions of the stator yoke and the stator teeth, the filling blocks in the mounting grooves are made of amorphous materials, the shape is simple, and stamping and machining are easy. In addition, packaging sheets are arranged at the two ends of the stator core, so that the amorphous material is prevented from being damaged due to external collision. According to the permanent magnet motor stator assembly of the utility model, the amorphous material and the silicon steel material are adopted as the mixed magnetic conductive material, so that the iron core loss of the tooth yoke part in the permanent magnet motor stator assembly can be reduced, and therefore, the motor efficiency can be improved, performance improvement can be ensured to the greatest extent, and the assembly can be compatible with the existing mechanical structure; and rapid use and mass production are facilitated.

The embodiment of the utility model discloses a motor and a vehicle with the same, the motor comprises a stator assembly, the stator assembly comprises a stator core and a stator winding, the stator core comprises a yoke part and a tooth part located at one side, facing the axis of the motor, of the yoke part, the yoke part and the tooth part define a winding groove, and the stator winding is arranged in the winding groove; wherein the stator winding comprises a winding wire wound in a winding groove, and the cross section contour of the winding wire is square. According to the motor provided by the embodiment of the invention, by adopting the square winding, the slot fullness rate can be improved, the torque density and the power density of the motor are higher, the energy efficiency of the motor is improved, the size of the motor can be reduced, the space occupation of the motor is reduced, and the arrangement difficulty of the motor is reduced.

The application discloses a motor system efficiency improving system, device and vehicle permanent magnet synchronous motor. The motor system efficiency improving system comprises a CAN communication transceiving module, a torque coordination module, a variable frequency control module and a motor control module. The application receives instruction information sent by a vehicle controller through the CAN communication transceiving module, analyzes the instruction information, processes the analyzed instruction information through the torque coordination module, obtains target instruction information, processes the target instruction information through the variable frequency control module, obtains frequency information and current loop control parameter information, switches the motor control mode according to the target instruction information through the motor control module, and improves the motor efficiency according to the frequency information and the current loop control parameter information. The application realizes closed-loop control of the motor according to the current loop control parameter information through the motor control module, and improves the motor efficiency according to the frequency information.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, the motor comprises a stator and a rotor, the rotor comprises a rotor iron core and a permanent magnet, the rotor iron core is provided with a magnet groove, the permanent magnet is installed on the rotor iron core and located in the magnet groove, the width of the permanent magnet is W, the thickness of the permanent magnet is t, and 0.1 < = t2 / W < = 0.12; according to the technical scheme provided by the invention, the cost of the permanent magnet and the motor is reduced, the demagnetization resistance of a single magnet is optimized, the eddy current loss of the magnet is reduced, and the motor efficiency is improved.

The invention relates to the technical field of motor gear shifting, and provides an optimal gear shifting method and related device for a multi-gear gearbox of an electric vehicle, and the method comprises the steps: obtaining a target vehicle speed and a target acceleration of a target vehicle; determining the target rotating speed and torque of the target vehicle according to the target vehicle speed and the target acceleration; the current gear information of the target vehicle is determined according to the target rotating speed, the torque, the lasting time of the previous gear and an actual motor efficiency diagram, and therefore the current gear information can be determined according to the target vehicle speed and the target acceleration of the target vehicle and the actual motor efficiency diagram; and the accuracy of determining the current gear information is improved.

The invention provides a gear selection method, device and equipment for a hybrid electric vehicle and a computer medium. The method comprises the steps that torque required by a driver and allowable discharging power of a battery are determined; obtaining the current rotating speed of the driving motor, and determining a high-efficiency working interval of the driving motor in the efficiency characteristics of the driving motor based on the equipower line corresponding to the allowable discharge power of the battery and the current rotating speed of the driving motor; determining a power boundary required to be provided by an engine based on the torque required by the driver and the torque upper and lower limits of the efficient working interval of the driving motor; determining an engine feasible region in the working characteristics of the engine by combining the power boundary; executing an equivalent fuel consumption minimum algorithm in the feasible region of the engine and the efficient working region of the driving motor, and determining optimal working points of the engine and the driving motor; and the wheel end rotating speed is obtained, and the synchronizer gear of the power dividing mechanism is controlled according to the relation between the engine rotating speed corresponding to the optimal working point and the wheel end rotating speed.

The utility model discloses a motor, compressor and refrigeration equipment, and relates to the motor technology field, the motor comprises a stator and a rotor, the minimum inner diameter of the stator is D1, the maximum outer diameter of the stator is D2, the stator comprises a stator iron core, the stator iron core is provided with stator teeth, and the tooth width of the stator teeth is Bt; the rotor is rotationally arranged in the stator, the number of pole pairs of the rotor is P, the rotor comprises a rotor iron core and permanent magnets, the rotor iron core is provided with a plurality of magnet grooves in the circumferential direction, openings of the magnet grooves are arranged towards the outer circumference of the rotor iron core, and three permanent magnets arranged in the extending direction of the magnet grooves are arranged in each magnet groove; the total radial cross section area of the three permanent magnets is S, the distance between points, closest to the outer circumference of the rotor core, of the two permanent magnets located at the ends is X, and the formula is met that (D2 * D1) / (2S * P) / 10 is larger than or equal to 1.1 and smaller than or equal to 3.2, and Bt / X is larger than or equal to 0.28 and smaller than or equal to 0.75. The technical scheme provided by the utility model can further reduce the iron loss under the motor load condition, thereby improving the motor efficiency.

The utility model discloses a single-phase brushless motor time-delay starting operation module, which mainly comprises a brushless motor main body and a matched control assembly, and comprises two 41F type Hall sensors which are connected in parallel, a common pull-up resistor and the like. The two Hall sensors are symmetrically installed on the two sides of the geometric center line of a stator magnetic pole, the detection faces face a rotor permanent magnet, high and low levels are output through induction of rotor magnetic pole changes, the H-bridge power tube is controlled, and stator coil power supply state switching is achieved. During working, according to the characteristics of the Hall sensor, the motor is controlled to be started and run according to the principle that the motor is firstly turned off and then turned on, and the dead time control unit generates 0.5-2 ms power tube switching delay. According to the module, the starting success rate of the motor is greatly improved, the starting failure risk is effectively reduced, and the vibration amplitude in the starting process is obviously reduced. In the operation stage, the motor efficiency is remarkably improved, and the rotating speed fluctuation is extremely small when the load changes. Moreover, the circuit design of the module is simplified, so that the hardware cost is greatly reduced.

The utility model relates to a motor cooling structure, a motor and a vehicle. The motor cooling structure comprises a rotor core, one end of the rotor core is provided with a left dynamic balance plate, the other end of the rotor core is provided with a right dynamic balance plate, and a first cooling oil duct is formed in the rotor core; a second cooling oil channel communicated with the first cooling oil channel is formed in the left dynamic balance plate, a third cooling oil channel communicated with the first cooling oil channel is formed in the right dynamic balance plate, and a first oil spraying opening connected with the second cooling oil channel is formed in the left dynamic balance plate. And the right dynamic balance plate is provided with a second oil nozzle connected with the third cooling oil duct, so that the rotor and the stator of the motor can be cooled at the same time. The utility model also provides a motor which comprises the motor cooling structure. The utility model further provides a vehicle which comprises the motor. According to the utility model, the problems of high cost and low motor efficiency caused by easy mechanical wear due to dynamic sealing of the existing motor cooling structure are solved.

This utility model discloses a magnetic gear pump motor without an internal rotor, specifically relating to the field of motor technology. It includes a rotor body with a gear pump connection hole on the front side, which penetrates the rotor body. A drive disc is detachably snap-fitted onto the rear side of the rotor body. A motor rear cover is fitted behind the rotor body, with a mounting hole on one side. A waterproof connector is snap-fitted into the mounting hole. This utility model employs a rotorless design, significantly reducing motor weight and volume, resulting in a compact structure and convenient installation and use. This design also eliminates iron loss, improving motor efficiency and reducing energy consumption. Its novel ironless winding, specially braided and fixed, exhibits excellent strength and stability, directly fixed to the inner wall of the outer casing, reducing intermediate losses and improving magnetic field conduction efficiency, thus enhancing motor performance.

To provide a technique for improving motor efficiency in a motor component.SOLUTION: The motor component includes an insulating composite member including a soft magnetic material and a non-magnetic ceramic.SELECTED DRAWING: Figure 1