Improved stator and rotor iron core

Abstract

The utility model relates to the technical field of stator and rotor iron cores, and discloses an improved stator and rotor iron core, which comprises a stator assembly, the stator assembly is arranged on the outer wall of magnetic steel and is used for generating a rotating magnetic field, the stator assembly comprises a stator iron ring, the stator iron ring is arranged on the outer wall of the magnetic steel, a Hall groove is arranged in the stator iron ring, and the Hall groove is arranged on the outer wall of the magnetic steel. An embedded groove is formed in the stator iron ring, a reinforcing groove is formed in the stator iron ring, and the rotor assembly is arranged in the magnetic steel and used for generating electromagnetic torque. According to the utility model, the rotor core in the motor adopts a permanent magnet magnetic tile externally-attached mode, and in a sine wave control scheme, the externally-attached magnetic tiles can flexibly adjust the magnetic field distribution, better match with the stator magnetic field and increase the adaptive torque. The tile-shaped magnetic steel improves the magnetic domain density, solves the problems of insufficient installation torque and low magnetic field utilization in the prior art, and improves the operation stability, high efficiency and working condition adaptability.

Description

Technical Field

[0001] This utility model relates to the field of stator and rotor core technology, and in particular to an improved stator and rotor core. Background Technology

[0002] In the field of electric motors, the stator and rotor cores, as core components, play a decisive role in motor performance. With continuous technological advancements and increasingly stringent performance requirements across industries—such as electric vehicles needing high-torque, high-efficiency motors to ensure range and power, and industrial automation equipment requiring stable operation under complex conditions—traditional stator and rotor cores are no longer sufficient to meet these diverse and demanding requirements. Against this backdrop, the development of an improved stator and rotor core is urgently needed. This will bring new breakthroughs in optimizing motor performance, adapting to different application scenarios and driving further development of related industries.

[0003] In existing technologies, a common structural form for the stator and rotor cores of electric motors is to directly embed permanent magnets inside the rotor core. This generates a magnetic field that interacts with the stator to achieve energy conversion. The underlying principle is based on the law of electromagnetic induction: when alternating current is applied to the stator windings, a rotating magnetic field is generated. The rotor, with its embedded permanent magnets, is driven to rotate by electromagnetic force under the influence of this magnetic field. This structure can meet the operational requirements of ordinary electric motors to a certain extent, its manufacturing process is relatively mature, and its cost is relatively controllable, making it widely used in traditional motor manufacturing.

[0004] However, existing technologies have significant drawbacks. Due to the inherent structural characteristics of permanent magnets, the adjustment of the magnetic field distribution is limited when using a universal sinusoidal control scheme, making it difficult to achieve optimal matching with the stator sinusoidal magnetic field. This results in insufficient torque during motor operation, hindering efficient operation under conditions requiring high torque, such as the startup phase of heavy industrial equipment or the climbing of electric vehicles. The motor's power output cannot meet actual needs, severely impacting the normal use and efficiency of the equipment. It also limits the motor's application in broader and more complex conditions. Therefore, an improved stator and rotor core is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an improved stator and rotor core, which aims to improve the problems of insufficient motor torque and low magnetic field utilization efficiency under the traditional installation method in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An improved stator and rotor core includes a stator assembly disposed on the outer wall of the magnets for generating a rotating magnetic field. The stator assembly includes a stator ring disposed on the outer wall of the magnets, with a Hall groove, an embedded groove, and a reinforcing groove inside the stator ring. A rotor assembly is disposed inside the magnets for generating electromagnetic torque. A magnet is located between the stator and rotor assemblies to improve energy conversion efficiency.

[0008] Furthermore, the rotor assembly includes a rotor ring disposed inside the magnet.

[0009] Furthermore, the rotor iron ring is disposed inside the stator iron ring, and a connecting key is fixedly connected inside the rotor iron ring.

[0010] Furthermore, the connecting key is located on one side of the inner ring of the rotor iron ring and is used for connecting to the motor output end.

[0011] Furthermore, the outer wall of the rotor iron ring is fixedly connected with a ring array of positioning protrusions, which are used for precise positioning to maintain a stable connection.

[0012] Furthermore, the positioning protrusion has a positioning groove inside, which is used to maintain the correct axial position.

[0013] Moreover, the outer wall of the positioning protrusion is disposed between the two magnets, and the positioning groove is in contact with the stator iron ring.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, the rotor core of the motor is installed using an external permanent magnet tile mounting method. In terms of universal sine wave control scheme, the externally mounted magnetic tile can flexibly adjust the magnetic field distribution, which can better match the stator sine wave magnetic field and significantly increase the adaptable torque. At the same time, the magnets are tile-shaped, and their unique shape makes it easier for the magnetic domains to align in a specific direction during magnetization, greatly increasing the magnetic domain density. This solves the problems of insufficient motor torque and low magnetic field utilization efficiency under traditional installation methods, and improves the stability, efficiency and adaptability of motor operation to different working conditions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an improved stator and rotor core proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the rotor ring structure of an improved stator-rotor core proposed in this utility model;

[0018] Figure 3This is a schematic diagram of the stator ring of an improved stator-rotor core proposed in this utility model.

[0019] Legend:

[0020] 1. Stator iron ring; 2. Hall groove; 3. Embedded groove; 4. Magnet; 5. Rotor iron ring; 6. Positioning protrusion; 7. Positioning groove; 8. Connecting key; 9. Reinforcing groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figure 1 - Figure 3This utility model provides an embodiment of an improved stator and rotor core, including a stator assembly disposed on the outer wall of a magnet 4 to generate a rotating magnetic field. The stator assembly includes a stator ring 1, which is made of stacked silicon steel sheets with high magnetic permeability. The surface of the silicon steel sheets undergoes special insulation treatment to effectively reduce eddy current losses. The stator ring 1 is disposed on the outer wall of the magnet 4, and a Hall slot 2 is formed inside the stator ring 1. The Hall slot 2 requires extremely high dimensional accuracy, with its depth and width precisely calculated to accommodate a Hall sensor specifically used for detecting rotor position. During motor operation, the Hall sensor is installed in the Hall slot 2 to accurately detect the rotor position, providing crucial data for precise motor control. An embedded groove 3 and a reinforcing groove 9 are formed inside the stator ring 1. The rotor assembly is disposed inside the magnet 4 to generate electromagnetic torque. The magnet 4 is made of high-performance neodymium iron boron material. This material features high remanence, high coercivity, and high magnetic energy product, enabling it to generate a strong and stable magnetic field. The magnet 4, located between the stator and rotor assemblies, has a unique tile-shaped design that significantly increases the magnetic domain density. During motor operation, this greatly improves the energy conversion rate, converting electrical energy into mechanical energy more efficiently. The rotor assembly includes a rotor ring 5, which is located inside the magnet 4 and inside the stator ring 1. A connecting key 8 is fixedly connected inside the rotor ring 5, located on one side of the inner ring, for connecting to the motor output. A ring array of positioning protrusions 6 is fixedly connected to the outer wall of the rotor ring 5. These protrusions 6 are used for precise positioning and stable connection. Positioning grooves 7 are formed inside the positioning protrusions 6, used to maintain the correct axial position. The outer wall of the positioning protrusions 6 is located between the two magnets 4, and the positioning grooves 7 are in contact with the stator ring 1.

[0023] Specifically, during the actual operation of the motor, the tile-shaped magnet 4 plays a crucial role. Its tile shape greatly optimizes the magnetic field distribution, allowing the rotor magnetic field and the stator sinusoidal magnetic field to interact more efficiently. This excellent magnetic field matching significantly improves the motor's operating efficiency and output torque, providing a strong guarantee for the motor's stable operation under complex conditions. The Hall slot 2 specially designed inside the stator ring 1 provides a stable space for sensor installation. During motor operation, this structure can effectively buffer vibration and impact, preventing measurement deviations caused by external interference, thereby significantly improving the stability and service life of the sensor and providing reliable data feedback for precise motor control. The reinforcing groove 9 on the outer wall of the stator ring 1 effectively enhances the overall structural strength of the stator, resisting the strong electromagnetic forces generated during motor operation. In addition to mechanical force, the reinforcing groove 9 disperses stress, significantly reducing the risk of stator deformation and damage, ensuring long-term stable operation of the motor. The positioning protrusions 6 distributed in a ring array on the outer wall of the rotor iron ring 5 are of great significance in the motor assembly process. They provide a precise positioning benchmark for the installation of the rotor iron ring 5, allowing assembly personnel to quickly and accurately install the rotor to the designated position, greatly shortening assembly time and reducing adjustment work caused by inaccurate positioning, effectively improving motor assembly efficiency and production quality. In addition, the positioning grooves 7 opened inside the rotor iron ring 5 further ensure the high consistency of the rotor position after each motor is assembled. This effectively avoids motor performance differences caused by rotor positioning deviations, providing a solid foundation for ensuring product quality consistency during large-scale production, and powerfully promoting the standardization and large-scale production process of motor products. At the same time, the various components of the motor can be reliably connected through the connecting key 8, ensuring efficient and stable power transmission.

[0024] Working Principle: During use, the rotor magnetic field interacts better with the stator's sinusoidal magnetic field through the tile-shaped magnets 4. Simultaneously, the Hall effect slots 2 inside the stator ring 1 better secure the sensor, reducing the impact of vibration and impact during motor operation and improving sensor stability and lifespan. The sensor is also connected and placed via the embedded slots 3, and the reinforcing grooves 9 on its outer wall increase the stator's structural strength, enabling it to better withstand electromagnetic and mechanical forces during motor operation, reducing the risk of deformation and damage. Furthermore, the annular array of positioning protrusions 6 on the outer wall of the rotor ring 5 provides a clear positioning reference for its installation, allowing for quick and accurate rotor installation in the designated position, reducing adjustment time and errors during assembly, and improving assembly efficiency and production quality. The internal positioning grooves 7 ensure that the position of the rotor ring 5 remains highly consistent after assembly for each motor, improving performance consistency and reducing performance differences caused by rotor positioning deviations. This is beneficial for large-scale production and quality control, and the connection can be achieved via the connecting key 8.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An improved stator-rotor core, characterized by, Include: Magnetic steel (4), the magnetic steel (4) is located between stator assembly and rotor assembly, be used for improving energy conversion rate; Stator assembly, the stator assembly is arranged in the outer wall of the magnetic steel (4), for generating rotating magnetic field; The stator assembly includes stator iron ring (1), the stator iron ring (1) is arranged in the outer wall of the magnetic steel (4), the inside of the stator iron ring (1) is provided with Hall slot (2), the inside of the stator iron ring (1) is provided with inner embedding groove (3), the inside of the stator iron ring (1) is provided with reinforcing recess (9); Rotor assembly, the rotor assembly is arranged in the magnetic steel (4), for generating electromagnetic torque.

2. An improved stator-rotor core according to claim 1, characterized in that: The rotor assembly includes rotor iron ring (5), the rotor iron ring (5) is arranged in the magnetic steel (4).

3. An improved stator-rotor core according to claim 2, characterized in that: The rotor iron ring (5) is arranged in the stator iron ring (1), and the inside of the rotor iron ring (5) is fixedly connected with connecting key (8).

4. An improved stator-rotor core according to claim 3, characterized in that: The connecting key (8) is arranged in the inner ring of the rotor iron ring (5) one side, for the connection of motor output end.

5. An improved stator-rotor core according to claim 4, characterized in that: The outer wall of the rotor iron ring (5) is fixedly connected with annular array positioning protrusion (6), and the positioning protrusion (6) is used for accurate positioning and keeps connection stable.

6. An improved stator-rotor core according to claim 5, characterized in that: The inside of the positioning protrusion (6) is provided with positioning recess (7), and the positioning recess (7) is used for keeping in correct axial position.

7. An improved stator-rotor core according to claim 6, characterized in that: The outer wall of the positioning protrusion (6) is arranged between two magnetic steels (4), and the positioning recess (7) is in contact with the stator iron ring (1).

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