Motor winding and circuit thereof
By using insulating paper and insulating supports in the motor, combined with concentrated winding and series winding circuit, the short circuit problem caused by contact between the stator winding and the iron core is solved, improving the insulation performance and operating efficiency of the motor, and enhancing the safety and reliability of the motor.
Patent Information
- Application Number
- CN202520200156.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-09
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-09
AI Technical Summary
The insulation materials in existing motors cannot completely prevent direct contact between the stator windings and the stator core, resulting in a high risk of short circuits or electrical faults. The distributed windings are also longer, making them more prone to failure and affecting the reliability and stability of the motor.
Insulating paper and insulating brackets are used as isolation materials. The design features a concentrated winding form, which, combined with the insulating brackets, provides mechanical support and electrical insulation. The stator windings are wound in series, and white and black wires are used as brake wires. Power-off protection is achieved through microswitches.
It improves the insulation performance between the stator winding and the iron core, reduces the risk of short circuits and electrical faults, enhances the mechanical stability and operating efficiency of the motor, simplifies circuit design, and improves the safety and reliability of the motor.
Smart Images
Figure CN223809626U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to motor technology field, concretely relates to a motor winding and circuit thereof. BACKGROUND
[0002] As a device for converting electrical energy into mechanical energy, motors are widely used in industry, transportation, household appliances and other fields. The traditional motor structure mainly includes two parts of stator and rotor, wherein the stator is responsible for generating magnetic field, and the rotor produces rotary motion under the action of the magnetic field. In order to improve the performance and reliability of the motor, researchers continue to optimize and improve the structure of the motor.
[0003] In the existing motor technology, the stator is usually composed of stator core, stator winding and insulating material. The stator winding is wound on the stator core and is isolated from the stator core by the insulating material to prevent short circuit and electrical failure. In addition, the stator winding usually adopts distributed winding or chain winding and other forms, which improves the efficiency and performance of the motor to a certain extent.
[0004] However, the insulating material in the existing motor may not completely prevent direct contact between the stator winding and the stator core, resulting in a high risk of short circuit or electrical failure. The stator winding in the existing motor is prone to damage under the action of vibration, mechanical stress and other factors, affecting the reliability and stability of the motor. Especially for distributed winding, due to the long length of the winding, it is more prone to failure.
[0005] In view of this, we propose a motor and its winding circuit which adopts insulating paper and insulating support as isolation material, effectively preventing direct contact between the stator winding and the stator core, improving the insulation performance between the winding and the core, reducing the risk of short circuit and electrical failure, adopting concentrated winding form and insulating support design, reducing the damage of winding caused by vibration and mechanical stress, improving the reliability and stability of the motor. SUMMARY
[0006] The utility model solves the technical problems that the insulating material in the existing motor may not completely prevent direct contact between the stator winding and the stator core, resulting in a high risk of short circuit or electrical failure, and the length of the distributed winding used in the motor is longer, which is more prone to failure.
[0007] To achieve the above purpose, the utility model provides the following technical scheme:
[0008] The motor winding comprises a stator, the stator comprises a stator core, a stator winding and an insulating support; the insulating support is provided with two and is buckled on the upper and lower ends of the stator core respectively and is used for supporting and fixing the stator winding, and the stator winding is wound on the stator core and the insulating support; the insulating support provides mechanical support for the stator winding and ensures good electrical insulation between the stator winding and the stator core;
[0009] The stator core comprises a stator yoke and a plurality of Y-shaped stator teeth which are arranged at equal intervals along the circumferential direction of the inner side of the stator yoke; the number of the stator teeth is four;
[0010] The insulating support comprises an outer cylindrical shell, a winding tooth and an inner cylindrical shell which are sequentially fixedly connected and arranged; the outer cylindrical shell is located on the outer side of the stator core, and the winding tooth and the inner cylindrical shell are arranged at equal intervals along the circumferential direction of the outer cylindrical shell and are located above each stator tooth;
[0011] The stator winding is wound on the stator teeth and the winding tooth in the form of concentrated winding.
[0012] As preferred, the inner wall surface of the V-shaped notch surrounded by the stator tooth and the stator yoke is provided with insulating paper for isolating the stator winding and the stator core to prevent the stator winding from directly contacting the stator core to cause short circuit or electrical failure. The insulating paper as the isolation material can effectively prevent the stator winding from directly contacting the stator core and avoid the short circuit phenomenon caused by poor contact or wear.
[0013] As preferred, a plurality of buckling columns are arranged at intervals along the circumferential direction of the outer cylindrical shell on the side of the outer cylindrical shell away from the winding tooth and the inner cylindrical shell, and the buckling columns are buckled with the buckling grooves on the stator yoke. The design of the buckling columns makes the assembly of the stator assembly more rapid and convenient.
[0014] A winding circuit for a motor winding, the stator winding adopts concentrated winding, the concentrated winding adopts a series mode winding circuit, and the rotor adopts a parallel connection mode at the carbon brush. The series mode winding circuit can improve the utilization rate of the winding, reduce copper loss, because the total length of the winding is relatively short, thereby reducing the power loss and improving the operating efficiency of the motor.
[0015] As preferred, the two connection terminals on the series stator winding are connected with the green line and the red line respectively, the white line and the black line are led out at the carbon brush, the white line and the black line are used as brake lines, and the black line and the red line are connected with the power supply. By using the white line and the black line as brake lines, the brake function of the motor can be flexibly controlled.
[0016] As preferred, the white line and the green line are directly short-circuited or are connected through a micro switch as a structure of power-off protection.
[0017] Direct short-circuit can simplify the circuit design, and the micro switch can be used as a safety switch, which can quickly disconnect the circuit when detecting abnormal conditions (such as overheating, overload, the running appliance is suddenly taken away, etc.), to protect the motor from damage and protect the user from injury.
[0018] Compared with the prior art, the technical effects and advantages of the utility model are:
[0019] The motor winding and its winding circuit are based on electromagnetic induction, and an alternating magnetic field is generated by passing alternating current in the stator winding. The optimization of the stator tooth and winding form concentrates the magnetic field on the stator tooth, thereby enhancing the magnetic field effect. The rotor is subjected to force under the action of the magnetic field, and rotates to realize energy conversion. This design improves the efficiency and stability of the motor operation, so that the motor can efficiently output power.
[0020] The design of the insulating support on the motor winding and its winding circuit provides additional mechanical support and electrical insulation for the stator winding, reducing the risk of short circuit and electrical failure, greatly improving the safety and reliability of the motor. Secondly, the optimization of the stator tooth and winding form helps to improve the magnetic field efficiency, so that the motor produces a stronger magnetic field under the same current, improves the output torque, and thus improves the overall efficiency and performance of the motor.
[0021] The motor winding and its winding circuit adopt a series mode of concentrated winding circuit, which not only improves the utilization rate of the winding, reduces copper loss, but also simplifies the winding structure and reduces the risk of winding failure. The flexible design of the white and black lines as brake lines enables the motor to quickly respond to the stop signal, improving the safety performance of the system. At the same time, the power-off protection is realized by direct short-circuit or micro switch, which not only simplifies the circuit design, but also increases the reliability and easy maintenance of the motor system. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a structure diagram of the stator of the utility model;
[0023] Figure 2 It is an exploded view of the stator of the utility model;
[0024] Figure 3 It is a first perspective view of the insulating support of the utility model.
[0025] Figure 4 It is a second perspective view of the insulating support of the utility model;
[0026] Figure 5 It is a structure diagram of the stator core of the utility model;
[0027] Figure 6 It is a structure diagram of the insulating paper of the utility model;
[0028] Figure 7 The motor winding circuit diagram of the utility model does not need brake in the environment or operation mode.
[0029] Figure 8 The motor winding circuit diagram of the utility model does not need brake in the environment or operation mode.
[0030] In the figure: 1, stator;11, stator core;1101, stator yoke;1102, stator tooth;1103, V-shaped notch;1104, buckle groove;12, stator winding;1201, terminal;13, insulation support;1301, outer cylindrical shell;1302, winding tooth;1303, inner cylindrical shell;1304, buckle column;14, insulation paper. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0032] As shown in Figures 1-6 A motor winding includes a stator 1, the stator 1 includes a stator core 11, a stator winding 12 and an insulation support 13;The insulation support 13 is provided with two and is buckled at the upper and lower ends of the stator core 11 respectively and is used for supporting and fixing the stator winding 12, and the stator winding 12 is wound on the stator core 11 and the insulation support 13;The insulation support 13 provides mechanical support for the stator winding 12 and ensures good electrical insulation between the stator winding 12 and the stator core 11;
[0033] The stator core 11 includes a stator yoke 1101 and a plurality of Y-shaped stator teeth 1102 arranged at equal intervals along the circumferential direction of the inner side surface of the stator yoke 1101;The number of stator teeth 1102 is four;The inner wall surface of the V-shaped notch 1103 surrounded by the stator tooth 1102 and the stator yoke 1101 is placed with insulation paper 14 for isolating the stator winding 12 and the stator core 11 to prevent the stator winding 12 from directly contacting the stator core 11, causing short circuit or electrical failure. The insulation paper 14 as an isolation material can effectively prevent the stator winding 12 from directly contacting the stator core 11, avoiding short circuit caused by poor contact or wear. The insulation paper 14 provides an additional electrical insulation layer, improves the insulation performance between the winding and the core, thereby increasing the safety and reliability of the motor. By reducing the occurrence of short circuit and electrical failure, the life of the motor winding can be prolonged, and the frequency of maintenance and replacement can be reduced. The insulation paper 14 helps to maintain the performance stability of the stator winding 12 and prevents the performance of the motor from being reduced due to the damage of the winding.
[0034] The insulating support 13 comprises an outer cylindrical shell 1301, a winding tooth 1302 and an inner cylindrical shell 1303 fixedly connected in sequence from outside to inside, the outer cylindrical shell 1301 is located outside the stator core 11, the winding tooth 1302 and the inner cylindrical shell 1303 are arranged in equal distance along the circumferential direction of the outer cylindrical shell 1301 and above each stator tooth 1102;
[0035] The stator winding 12 is wound on the stator tooth 1102 and the winding tooth 1302 in the form of concentrated winding.
[0036] The outer cylindrical shell 1301 is provided with a plurality of buckling columns 1304 arranged in equal distance along the circumferential direction of the outer cylindrical shell 1301 on the side away from the winding tooth 1302 and the inner cylindrical shell 1303, the buckling columns 1304 are buckled with the buckling grooves 1104 on the stator yoke 1101. The buckling columns 1304 are buckled with the buckling grooves 1104 on the stator yoke 1101, which enhances the mechanical stability of the stator structure and reduces vibration and noise during operation. The buckling design of the buckling columns 1304 makes the assembly of the stator assembly faster and more convenient, improves production efficiency and reduces assembly cost. The buckling structure provides a reliable fixing method, which ensures that the stator assembly will not displace or deform during operation, thereby ensuring the normal operation of the motor.
[0037] The motor is based on electromagnetic induction. When alternating current passes through the stator winding 12, an alternating magnetic field is generated around the stator winding 12. Due to the concentrated winding form of the stator winding 12, this winding form can concentrate the magnetic field on the stator tooth 1102, thereby enhancing the magnetic field effect. The movement of the rotor is affected by the magnetic field generated by the stator, according to the Lorentz force law, the conductive body in the rotor will be subjected to force in the magnetic field, so that the rotor produces rotary motion.
[0038] Specifically, the Y-shaped stator tooth 1102 on the stator core 11 and the winding tooth 1302 on the insulating support 13 jointly constitute a concentrated winding structure, which is conducive to the embedding and fixing of the stator winding 12, and also makes the distribution of the stator winding 12 on the stator tooth 1102 more uniform, which helps to improve the efficiency and stability of the motor operation.
[0039] The design of the insulating support 13 provides additional mechanical support for the stator winding 12, helping to maintain the stability and durability of the stator winding 12, reducing winding damage due to vibration or mechanical stress. The insulating support 13 ensures good electrical insulation between the stator winding 12 and the stator core 11, reducing the risk of short circuits and electrical faults, thereby improving the safety and reliability of the motor. The design of the stator teeth 1102 and the optimization of the winding form help to improve the magnetic field efficiency, making the power output of the motor more efficient, thereby improving the overall efficiency and performance of the motor. The structure of the concentrated winding and the design of the insulating support 13 make the manufacturing and maintenance of the motor more convenient, reducing production costs and maintenance difficulty.
[0040] As shown in Figure 7 , a winding circuit for motor winding, the stator winding 12 adopts a concentrated winding, the concentrated winding adopts a series mode winding circuit, and the rotor is connected in parallel at the carbon brush.
[0041] The series mode winding circuit can improve the utilization rate of the winding, reduce copper loss, because the total length of the winding is relatively short, thereby reducing power loss and improving the operating efficiency of the motor. The use of series mode can simplify the structure of the winding and reduce the number of connection points, thereby reducing the risk of winding failure. The design of the concentrated winding helps to concentrate the magnetic field, enabling the motor to generate a stronger magnetic field under the same current, thereby improving the output torque of the motor.
[0042] Specifically, the two connection terminals 1201 on the series stator winding 12 are connected to the green and red lines respectively, and the white and black lines are drawn out at the carbon brush, with the white and black lines serving as brake lines, and the black and red lines connected to the power supply.
[0043] By using the white and black lines as brake lines, the brake function of the motor can be flexibly controlled, enabling the motor to quickly respond to stop signals. When an emergency stop of the motor is required, the power supply can be quickly cut off by controlling the on-off of the brake lines, improving the safety performance of the system.
[0044] Specifically, the white and green lines are directly short-circuited or connected through a micro switch as a structure for power-off protection.
[0045] Specifically, the wiring diagram for environments or operating modes that do not require braking is referred to Figure 8 .
[0046] Direct short-circuiting can simplify circuit design, reducing unnecessary components and connections, thereby reducing system complexity. Simplified circuit design helps to reduce motor manufacturing costs.
[0047] The micro switch can serve as a safety switch that can quickly disconnect the circuit when an abnormal condition is detected (such as overheating, overload, etc.), protecting the motor from damage. The micro switch generally has high reliability and long service life, which can improve the reliability of the entire motor system. When the motor needs to be checked or maintained, the micro switch provides a convenient operating point for troubleshooting and maintenance work.
[0048] The motor winding and its winding circuit are designed with concentrated winding and insulation support 13, enhancing mechanical stability and electrical insulation performance, improving efficiency and reliability. The optimization of the stator tooth 1102 and winding form enhances the magnetic field effect, improving the output torque. The series mode winding circuit simplifies the structure, reduces the risk of failure, and realizes the function of rapid shutdown through the brake wire. The power-off protection measures improve the safety and maintenance convenience of the system.
[0049] Finally, it should be noted that the above-described only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. An electric machine winding comprising a stator (1), characterized in that: The stator (1) comprises a stator core (11), a stator winding (12) and an insulating support (13); the insulating support (13) is provided with two and is buckled on the upper and lower ends of the stator core (11) and is used for supporting and fixing the stator winding (12), and the stator winding (12) is wound on the stator core (11) and the insulating support (13); The stator core (11) comprises a stator yoke (1101) and a plurality of Y-shaped stator teeth (1102) arranged at equal intervals along the circumferential direction of the inner side of the stator yoke (1101); the number of the stator teeth (1102) is four; The insulating support (13) comprises an outer cylindrical shell (1301), a winding tooth (1302) and an inner cylindrical shell (1303) which are sequentially fixedly connected and arranged; the outer cylindrical shell (1301) is located on the outer side of the stator core (11), the winding tooth (1302) and the inner cylindrical shell (1303) are arranged at equal intervals along the circumferential direction of the outer cylindrical shell (1301) and are located above each stator tooth (1102); The stator winding (12) is wound on the stator tooth (1102) and the winding tooth (1302) in the form of concentrated winding.
2. An electrical machine winding according to claim 1, characterised in that: The inner wall surface of the V-shaped notch (1103) surrounded by the stator tooth (1102) and the stator yoke (1101) is provided with insulating paper (14) for isolating the stator winding (12) and the stator core (11) to prevent the stator winding (12) from directly contacting the stator core (11) to cause short circuit or electrical failure.
3. An electrical machine winding according to claim 2, characterised in that: The outer cylindrical shell (1301) is provided with a plurality of buckling columns (1304) arranged at intervals along the circumferential direction of the outer cylindrical shell (1301) on the side of the outer cylindrical shell (1301) away from the winding tooth (1302) and the inner cylindrical shell (1303), and the buckling columns (1304) are buckled with the buckling grooves (1104) on the stator yoke (1101).
4. A winding circuit for a winding of an electrical machine according to any one of claims 1-3, characterized in that: The stator winding (12) adopts concentrated winding, the concentrated winding adopts series mode winding circuit, and the rotor is connected in parallel at the carbon brush.
5. A winding circuit according to claim 4, characterized in that: The two wiring ends (1201) on the series stator winding (12) are connected with green and red lines respectively, white and black lines are led out at the carbon brush, the white and black lines are used as brake lines, and the black and red lines are connected with power supply.
6. A winding circuit according to claim 5, characterized in that: The white and green lines are directly short-circuited or connected through a micro switch as a structure power-off protection.