Self-adhesive silicon steel magnetic pole and non-oriented silicon steel magnetic pole combined iron core
By using self-adhesive with and without orientation silicon steel magnetic pole combination cores, the problem of high loss of stator cores in traditional motors is solved, and more efficient, stable and low-noise motor performance is achieved, while reducing costs.
Patent Information
- Application Number
- CN202421157986.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-25
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-25
AI Technical Summary
The stator core of traditional new energy drive motors has high loss in process, resulting in insufficient motor performance and inability to further improve.
The self-adhesive silicon steel magnetic pole combination iron core is adopted, and the yoke ring and magnetic pole teeth are arranged separately. The yoke ring of the non-oriented silicon steel and the magnetic pole teeth of the oriented silicon steel are used to combine the dovetail groove and the plug-in end design. , achieve higher stability and connection firmness.
It greatly reduces the hysteresis loss and iron loss of the iron core, improves the efficiency of the motor, reduces vibration and noise, improves the performance of the motor, while taking into account costs and improving cost performance.
Smart Images
Figure CN222508905U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motor iron cores, in particular to a self-adhesive iron core combined with or without oriented silicon steel magnetic poles. Background Art
[0002] Traditional fuel vehicles cause great environmental pollution during operation, especially in large cities where there are a large number of motor vehicles and the exhaust gas emitted also increases accordingly, polluting the environment and endangering the health of citizens. New energy vehicles powered by electric drive systems do not emit any harmful substances during operation, achieving zero emission of hazardous waste, protecting the clean environment and the health of citizens. Countries are working hard to gradually replace traditional fuel vehicles with clean new energy vehicles.
[0003] At present, the stator core of new energy drive motors generally adopts non-oriented silicon steel self-fastening and welding technology to punch and stack. The traditional process has the disadvantage of high loss. The iron loss of the stator core accounts for a very large proportion of the motor loss, which has become a bottleneck that cannot be broken through to improve the motor performance. Non-oriented silicon steel is restricted by its magnetic flux density limit, resulting in insufficient motor performance. Utility Model Content
[0004] In order to further improve motor performance and reduce energy consumption, the present application provides a self-adhesive iron core with or without oriented silicon steel poles.
[0005] The present application provides a self-adhesive composite core with or without oriented silicon steel poles, which adopts the following technical solution:
[0006] A self-adhesive iron core with and without oriented silicon steel magnetic poles, comprising an iron core body, wherein the iron core body comprises a yoke ring and magnetic pole teeth, the magnetic yoke ring is provided with an installation groove for plugging and installing the magnetic pole teeth, the magnetic yoke ring is made of non-oriented silicon steel, the magnetic pole teeth are made of oriented silicon steel, and a plurality of the installation grooves and magnetic pole teeth are evenly distributed around the circumference.
[0007] Optionally, the non-oriented silicon steel of the yoke ring is self-adhesive non-oriented silicon steel, and the oriented silicon steel of the magnetic pole teeth is self-adhesive oriented silicon steel.
[0008] Optionally, the mounting groove is a dovetail groove, and the end of the magnetic pole tooth has a plug-in end adapted to the dovetail groove.
[0009] Optionally, the slot width of the mounting slot is the same as and matches the width of the magnetic pole teeth.
[0010] Optionally, the magnetic pole teeth are in the shape of straight bars.
[0011] Optionally, the magnetic pole teeth are in the shape of cone bars, and the width of the magnetic pole teeth gradually increases from one end close to the center of the circle to the other end.
[0012] Optionally, both sides of one end of the magnetic pole teeth close to the center of the circle have outwardly protruding anti-slip portions, and there is a spacing between the anti-slip portions of adjacent magnetic pole teeth.
[0013] Optionally, the mounting slot has an outwardly extending abutment portion at the slot opening, and the abutment portion is used to abut against the magnetic pole teeth.
[0014] In summary, the present application includes at least one of the following beneficial technical effects:
[0015] 1. The yoke ring is made of non-oriented silicon steel, and the pole teeth are made of oriented silicon steel. Since the grains of oriented silicon steel are arranged along the rolling direction of the silicon steel sheet, the eddy current and Joule heat generated during the change of the magnetic field are not so high, which greatly reduces the hysteresis loss and iron loss of the iron core, thereby improving the efficiency, reducing the vibration and noise of the motor with the stator punching, improving the motor performance, and making further breakthroughs in the performance of existing motors;
[0016] 2. The pole teeth are made of self-adhesive oriented silicon steel with high magnetic permeability, low loss and low noise. The product is suitable for stators with flat wire, rectangular wire, Litz wire and round enameled wire windings. The dovetail-shaped mounting slot gives the pole teeth better stability. It can fully cover a variety of stators such as rectangular pole teeth, stepped pole teeth, wedge-shaped pole teeth, rectangular winding slots, U-shaped winding slots, trapezoidal winding slots, outer rotor cores, etc., and has better practicality and applicability.
[0017] 3. The glue of the self-adhesive silicon steel sheet is made of high-temperature resistant material. The self-adhesive silicon steel sheet has strong bonding force. The glue and the silicon steel sheet are closely combined to form a high-strength integrated structure, which can work for a long time in a high-temperature environment. The self-adhesive silicon steel technology makes the yoke ring and the pole teeth have high flatness and long service life. The pole teeth end will not produce warping, twisting and other failures. After assembly, the product has good consistency, is more solid, not easy to loosen, and will not have aging, falling off and other problems. The service life is long, making the combination more convenient and more suitable for automated manufacturing. The pole teeth end is not prone to warping, twisting and other failures;
[0018] 4. Self-adhesive silicon steel sheets have the characteristics of lower hysteresis loss and eddy current loss, and at the same time, they give full play to the product performance characteristics of oriented silicon steel and non-oriented silicon steel, taking into account both performance and cost, so that the product can effectively reduce the generation of electromagnetic waves and noise, improve motor performance, reduce energy consumption, and improve the generation of motor NVH. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is the overall structural diagram of Example 1.
[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0021] Figure 3 It is a structural diagram of the magnetic yoke ring in Example 1.
[0022] Figure 4 This is the overall structural diagram of Example 2.
[0023] Figure 5 yes Figure 4 Enlarged view of point B in the middle.
[0024] Figure 6 It is a structural diagram of the yoke ring in Example 2.
[0025] Description of reference numerals:
[0026] 1. Iron core body; 2. Magnetic yoke ring; 3. Magnetic pole teeth; 4. Mounting groove; 5. Plug-in end; 6. Anti-slip part; 7. Abutment part. DETAILED DESCRIPTION
[0027] The following is combined with Figure 1-6 This application is described in further detail.
[0028] Example 1
[0029] A self-adhesive iron core with or without oriented silicon steel poles, such as Figure 1 and Figure 2 As shown, it includes an iron core body 1, which includes a yoke ring 2 and magnetic pole teeth 3. There are multiple magnetic pole teeth 3 evenly distributed around the circumference. The yoke ring 2 is annular and the inner wall has multiple installation grooves 4 evenly distributed around the circumference for the magnetic pole teeth 3 to be plugged in and installed, so as to realize the separate arrangement of the yoke ring 2 and the magnetic pole teeth 3. The yoke ring 2 is made of self-adhesive non-oriented silicon steel, and the magnetic pole teeth 3 are made of self-adhesive oriented silicon steel. Since the grains of the oriented silicon steel are arranged along the rolling direction of the silicon steel sheet, the eddy current and Joule heat generated during the change of the magnetic field are not so high, thereby greatly reducing the hysteresis loss and iron loss of the iron core, thereby improving the efficiency, reducing the vibration and noise of the motor with the stator punching sheet, and improving the motor performance. The yoke ring 2 uses lower-cost self-adhesive non-oriented silicon steel, which can effectively take into account the cost while improving the motor performance, so that the motor has a higher cost performance.
[0030] In addition, the self-adhesive silicon steel sheet has self-adhesive glue on both the upper and lower sides, which makes the self-adhesive silicon steel sheet have strong bonding force. The glue and the silicon steel sheet are tightly combined to form a high-strength integrated structure, which can work for a long time in a high temperature environment, so that the yoke ring 2 and the magnetic pole teeth 3 have high flatness and long service life. The ends of the magnetic pole teeth 3 will not produce failures such as warping and twisting. The use of self-adhesive silicon steel sheets does not require the addition of adhesives, reduces the emission of volatile organic compounds, and meets modern environmental protection requirements. After the silicon steel sheet is compacted under high temperature and high pressure, the self-adhesive layer is tightly combined with the silicon steel sheet substrate, and cracking and oxidation will not occur, which greatly improves the mechanical properties and service life of the silicon steel sheet. At the same time, it is suitable for fully automated production, which improves work efficiency and production quality.
[0031] like Figure 2 and Figure 3 As shown, the mounting groove 4 is a dovetail groove, that is, the width of the mounting groove 4 gradually increases from its opening to the bottom. In this embodiment, the magnetic pole tooth 3 is in a straight strip shape, and has a plug-in end 5 adapted to the mounting groove 4 at one end of the magnetic pole tooth 3. The slot width of the mounting groove 4 is consistent with the width of the magnetic pole tooth 3, so that the contact area between the plug-in end 5 and the dovetail groove is larger. The cooperation between the plug-in end 5 and the dovetail groove can achieve radial self-locking, effectively improving the connection firmness and stability between the magnetic pole tooth 3 and the yoke ring 2. Figure 2 and Figure 3 As shown, both sides of the end of the magnetic pole tooth 3 away from the plug-in end 5 are provided with outwardly protruding anti-slip portions 6, and there is a spacing between the anti-slip portions 6 on adjacent magnetic pole teeth 3. The design of the anti-slip portion 6 can play a radial anti-slip role for the subsequent winding on the magnetic pole teeth 3, and this can also increase the subsequent contact area between the end of the magnetic pole tooth 3 and the central rotor to improve the stability of the support; in addition, both sides of the groove of the corresponding installation groove 4 of the yoke ring 2 are provided with abutment portions 7 with radial outer edges, and the abutment portions 7 are used to abut the outer wall of the magnetic pole tooth 3, and the magnetic pole tooth 3 is wrapped by the abutment portion 7 to further improve the connection firmness between the magnetic pole tooth 3 and the yoke ring 2.
[0032] Example 2
[0033] A self-adhesive iron core with or without oriented silicon steel poles, such as Figure 4-Figure 6 As shown, the difference between it and Example 1 mainly lies in the different structure of the magnetic pole teeth 3. In this embodiment, the magnetic pole teeth 3 are arranged in a cone shape, and the width of the magnetic pole teeth 3 gradually increases from one end close to the center of the circle to the other end. The end of the magnetic pole teeth 3 away from the center of the circle is directly adapted to the dovetail-shaped mounting groove 4, and there is no need to additionally set the plug-in terminal 5 for connection, which simplifies the structure of the magnetic pole teeth 3, and the overall structural continuity of the magnetic pole teeth 3 is better. In addition, the space formed between adjacent magnetic pole teeth 3 is larger, which is convenient for better winding on the subsequent magnetic pole teeth 3, and the winding amount can also be more to better improve the motor performance.
[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A self-adhesive composite core with or without oriented silicon steel poles, comprising a core body (1), characterized in that: The core body (1) comprises a yoke ring (2) and magnetic pole teeth (3); the yoke ring (2) is provided with a mounting groove (4) for the magnetic pole teeth (3) to be inserted and installed; the yoke ring (2) is made of non-oriented silicon steel; the magnetic pole teeth (3) are made of oriented silicon steel; and a plurality of the mounting grooves (4) and the magnetic pole teeth (3) are evenly distributed around a circumference.
2. The self-adhesive iron core with or without oriented silicon steel poles according to claim 1, characterized in that: The non-oriented silicon steel of the magnetic yoke ring (2) is self-adhesive non-oriented silicon steel, and the oriented silicon steel of the magnetic pole teeth (3) is self-adhesive oriented silicon steel.
3. The self-adhesive iron core with or without oriented silicon steel poles according to claim 1, characterized in that: The installation groove (4) is a dovetail groove, and the end of the magnetic pole tooth (3) has a plug-in end (5) adapted to the dovetail groove.
4. The self-adhesive iron core with or without oriented silicon steel poles according to claim 3, characterized in that: The slot width of the installation slot (4) is the same as and matches the width of the magnetic pole teeth (3).
5. The self-adhesive iron core with or without oriented silicon steel poles according to claim 4, characterized in that: The magnetic pole teeth (3) are in the shape of straight strips.
6. The self-adhesive iron core with or without oriented silicon steel poles according to claim 3, characterized in that: The magnetic pole teeth (3) are in the shape of a cone bar, and the width of the magnetic pole teeth (3) gradually increases from one end close to the center of the circle to the other end.
7. The self-adhesive iron core with or without oriented silicon steel poles according to claim 1, characterized in that: The magnetic pole teeth (3) have outwardly protruding anti-slipping parts (6) on both sides of one end close to the center of the circle, and there is a spacing between the anti-slipping parts (6) of adjacent magnetic pole teeth (3).
8. The self-adhesive iron core with or without oriented silicon steel poles according to claim 5, characterized in that: The notch of the installation slot (4) is provided with an outwardly extending abutment portion (7), and the abutment portion (7) is used to abut against the magnetic pole teeth (3).