Motor for converting and outputting mechanical energy and electric energy

Abstract

The utility model relates to the field of electrical engineering, in particular to a mechanical energy and electric energy conversion output motor, which comprises a rotor steel ring, a permanent magnet, a ferrite stator core, a three-phase stator winding, a stator core base, a disc support, a rotor disc, a bearing, a bearing bush, a flange coupling and a rotating shaft. The ferrite stator iron core is installed in the stator iron core base, the three-phase stator winding is wound on the portion, exposed out of the stator iron core base, of the ferrite stator iron core, the stator iron core base is connected with the bearing bush through the disc support, the rotating shaft is sleeved with the bearing bush, and the bearing is installed between the bearing bush and the rotating shaft. The flange coupling sleeves the rotating shaft and is in key connection with the rotating shaft, the rotor disc sleeves the flange coupling and is connected with the rotor steel ring, and the permanent magnet is connected to the inner side of the rotor steel ring and located on the outer side of the ferrite stator iron core. According to the utility model, the service life of the stator core can be prolonged, and functions of a motor and a generator are integrated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical engineering technical field, especially relate to a mechanical energy and electric energy conversion output motor. BACKGROUND

[0002] The motor is a kind of equipment that converts electric energy into mechanical energy.The motor is mainly composed of stator, rotor and other accessories, and the stator includes stator core and stator winding.The working principle of the motor is to apply voltage to the stator winding to generate rotating magnetic field and act on the rotor to form magnetic electric power rotating torque.The direction of force movement of energized wire in magnetic field is related to the direction of electric current and the direction of magnetic induction line (magnetic field direction).The working principle of the motor is that magnetic field acts on the force of electric current to make the motor rotate.

[0003] The generator is a kind of equipment that converts mechanical energy into electric energy, and the generator is usually composed of stator, rotor, end cover and bearing, etc.The stator is mainly composed of stator core, wire package winding, machine base and other structural members for fixing these parts, and the rotor is mainly composed of rotor core, wire package winding, guard ring, center ring, slip ring, fan and rotating shaft, etc.The working principle of the generator is that the rotor rotates in the stator to cut magnetic force line to generate induced electromotive force, which is led out through the connection terminal and connected in the loop to generate current.

[0004] The motor and the generator mainly use electrical steel as the stator core when manufacturing and designing, and the disadvantage of using electrical steel as the stator core is that when the frequency of electrical steel exceeds 0.7-0.8kHz, the magnetic loss of the stator core will increase sharply, and the sharp increase of the magnetic loss will cause the stator core to heat up rapidly to overheat, which is easy to cause damage to the stator core.

[0005] At present, there is a lack of motor integrating the functions of motor and generator on the market, and if you want to realize the two functions, you often need to equip motor and generator at the same time, which increases the use cost. INVENTION CONTENTS

[0006] Therefore, the utility model provides a kind of mechanical energy and electric energy conversion output motor to solve the technical problems that the frequency of electrical steel as the stator core is limited and motor and generator are not integrated in prior art.

[0007] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0008] The utility model relates to a kind of mechanical energy and electric energy conversion output motor, including rotor steel ring, permanent magnet, ferrite stator core, three-phase stator winding, stator core base, disc support, rotor disc, bearing, bearing bush, flange coupling and rotating shaft;Wherein, ferrite stator core is installed in stator core base, the part of ferrite stator core that exposes stator core base is wound three-phase stator winding, stator core base is connected with bearing bush by disc support, bearing bush is sleeved on rotating shaft, and bearing is installed between bearing bush and rotating shaft, flange coupling is sleeved on rotating shaft and is keyed with rotating shaft, rotor disc is sleeved on flange coupling and is connected with rotor steel ring, permanent magnet is connected to the inside of rotor steel ring, and permanent magnet is located at the outside of ferrite stator core.

[0009] Further, ferrite stator core is one-piece structure or split structure.

[0010] Further, when ferrite stator core is one-piece structure, ferrite stator core is overall circular ring body, and recess for winding three-phase stator winding is processed on the outer ring of circular ring body.

[0011] Further, when ferrite stator core is split structure, ferrite stator core is composed of stator core unit spliced into circular ring body, and stator core unit is L-shaped, T-shaped, U-shaped or E-shaped.

[0012] Further, when stator core unit is L-shaped or T-shaped, one splicing place of stator core unit forms positioning protrusion, and another splicing place of stator core unit forms positioning groove.

[0013] Further, each phase coil of three-phase stator winding is alternately wound on ferrite stator core in predetermined order.

[0014] Further, flange part of flange coupling is fixedly connected with rotor disc.

[0015] Further, the number of disc supports is two, and opposite sides of two disc supports form stepped structure for limiting stator core base.

[0016] Compared with prior art, the utility model can achieve the following beneficial effects:

[0017] 1. Using ferrite instead of electrical steel as stator core can reduce magnetic loss, improve stator core temperature and increase service life of stator core.

[0018] 2. Break away from 0.7-0.8 kHz frequency limit, and can improve rotation speed as motor.

[0019] 3. Integrating motor and generator functions, which can output electric energy and mechanical energy, and can be freely switched to reduce use cost. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of this invention. The illustrative embodiments and descriptions of this invention are used to explain this invention and do not constitute an undue limitation of this invention. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of the motor that converts mechanical energy into electrical energy output according to an embodiment of this utility model;

[0022] Figure 2 for Figure 1 A partial sectional view;

[0023] Figure 3 The stator core unit described in the embodiment of this utility model is an L-shaped structural diagram;

[0024] Figure 4 A schematic diagram of the improved L-shaped stator core unit described in the embodiment of this utility model;

[0025] Figure 5 The stator core unit described in the embodiment of this utility model is a U-shaped structural diagram;

[0026] Figure 6 A schematic diagram of the E-type stator core unit described in the embodiment of this utility model;

[0027] Figure 7 A schematic diagram of the winding method of the three-phase stator winding described in the embodiment of this utility model.

[0028] Explanation of reference numerals in the attached drawings: 1. Rotor steel ring; 2. Permanent magnet; 3. Ferrite stator core; 4. Three-phase stator winding; 5. Stator core base; 6. Disc support; 7. Rotor disc; 8. Bearing bushing; 9. Flange coupling; 10. Rotating shaft; 11. Flat key; 12. Bearing. Detailed Implementation

[0029] To make the purpose, technical solution, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and do not constitute a limitation thereof.

[0030] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0031] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0033] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0034] As Figure 1 and Figure 2As shown, the utility model discloses a mechanical energy and electric energy conversion output motor, including rotor steel ring 1, permanent magnet 2, ferrite stator core 3, three phase stator winding 4, stator core base 5, disc support 6, rotor disc 7, bearing bushing 8, flange coupling 9, rotating shaft 10, flat key 11 and bearing 12, wherein, the shoulder is formed on rotating shaft 10, and the inner ring of bearing 12 is sleeved on rotating shaft 10 and is clamped at the shoulder, bearing 12 can prevent rotating shaft 10 from moving along the axial direction, bearing bushing 8 is sleeved on the outer ring of bearing 12, the number of disc support 6 is two coaxially sleeved on bearing bushing 8, and is fixedly connected with bearing bushing 8 through bolt, bearing bushing 8 plays the role of fixing bearing 12 and connecting disc support 6 simultaneously, the opposite side of two disc supports 6 forms the step structure, is used for limiting stator core base 5, stator core base 5 is annular structure, and the inner ring of stator core base 5 is inserted into the gap between two disc supports 6, and is limited through the step structure, and stator core base 5 and two disc supports 6 are fixed through bolt, and a circle of limit slot is processed along the circumference on the outer ring of stator core base 5, and ferrite stator core 3 is installed in the limit slot of stator core base 5, and the installation and fixation of ferrite stator core 3 are realized through stator core base 5, and the part of ferrite stator core 3 exposed stator core base 5 is wound three phase stator winding 4.

[0035] Ferrite stator core 3 and three phase stator winding 4 form a stator, based on the setting of bearing 12, bearing bushing 8 and stator do not rotate with rotating shaft 10.

[0036] Flange coupling 9 is sleeved on rotating shaft 10, and flange coupling 9 is connected between rotating shaft 10 through flat key 11, when flat key 11 can be replaced by semicircular key, wedge key, tangential key or spline. Rotor disc 7 is the disc structure, and the step structure is formed on the inner edge of rotor disc 7, in the assembly, flange coupling 9 is clamped in the step structure of rotor disc 7, and then the fixation of flange coupling 9 and rotor disc 7 is realized through bolt.Rotor disc 7 is fixedly connected with the port of rotor steel ring 1 through bolt, permanent magnet 2 is bonded on the side of rotor steel ring 1 facing ferrite stator core 3, the position of permanent magnet 2 is opposite to the position of ferrite stator core 3, and is located on the outside of ferrite stator core 3.

[0037] Rotor steel ring 1, permanent magnet 2 and rotor disc 7 form a rotor, based on the setting of flange coupling 9, the rotor rotates synchronously with rotating shaft 10.

[0038] The stator core of the utility model adopts ferrite material, and the ferrite is a kind of magnetic material, which is composed of iron oxide (Fe2O3) and other metal oxides (such as NiO, MgO, ZnO, MnO, CuO, BaO, etc.). The ferrite is a complex compound, and the composition of the ferrite can be expressed by the formula:

[0039] Me Fe2O3;

[0040] Wherein, Me refers to divalent metal.

[0041] The resistivity fluctuation range of the ferrite is 10 5 ~ 10 8 Ω·m, and the resistivity of the electrical steel is not more than 10 – 6 Ω·m. As can be seen, the ferrite has very high resistivity, and the higher the resistivity, the smaller the eddy current, and the smaller the eddy current, the less the magnetic loss. Therefore, the utility model adopts the ferrite instead of the electrical steel, which can greatly reduce the magnetic loss. When the frequency of the ferrite stator core 3 exceeds 0.7-0.8 kHz, it will not be overheated and damaged by rapid heating.

[0042] The ferrite stator core 3 can adopt an integrated structure or a split structure. When the ferrite stator core 3 adopts an integrated structure, the ferrite stator core 3 is a whole circular body, and a groove for winding the three-phase stator winding 4 is processed on the outer ring of the circular body in the circumferential direction. When the ferrite stator core 3 adopts a split structure, the ferrite stator core 3 is composed of a plurality of stator core units, and the whole of the plurality of stator core units after splicing is a circular body. The stator core unit can adopt various shapes, such as the L-shaped structure shown in Figure 3 , the T-shaped structure (not shown in the figure), the U-shaped structure shown in Figure 5 , and the E-shaped structure shown in Figure 6 , and the three-phase stator winding 4 is wound between the adjacent two grooves.

[0043] When the stator core unit adopts the L-shaped structure, the stator core units of the adjacent two L-shaped structures form a U-shaped arm, and the three-phase stator winding 4 is wound on the U-shaped arm. Similarly, when the stator core unit adopts the U-shaped structure, the stator core unit of the U-shaped structure itself forms a U-shaped arm, and when the stator core unit adopts the E-shaped structure, the stator core unit of the E-shaped structure itself forms two U-shaped arms.

[0044] As an improved structure of the L-shaped structure, as shown in Figure 4As shown, the stator core unit of the L-shaped structure has two splices in the horizontal part, one of which forms a spherical positioning protrusion, and the other forms a spherical positioning groove, and the two L-shaped stator core units are spliced by the cooperation of the positioning groove and the positioning protrusion. The splicing method has two advantages: one is that the opening angle of the U-shaped arm is increased, and the other is that the contact between the two adjacent stator core units is more compact, and the splicing is more stable.

[0045] When the stator core unit adopts a T-shaped structure, similar to the L-shaped structure, details are not repeated.

[0046] The winding mode of the three-phase stator winding 4 is as shown in the figure. Figure 7 As shown, the A-phase winding, the B-phase winding and the C-phase winding are alternately wound on the ferrite stator core in a period, startA, startB and startC are the first and last winding positions of the A-phase winding, the B-phase winding and the C-phase winding respectively.

[0047] The motor for converting and outputting mechanical energy and electrical energy provided by the embodiment of the utility model can be used as a motor and a generator. When used as a motor, torque is output through the rotating shaft, and when used as a generator, electrical energy is output through the stator.

[0048] When the rotating shaft is driven to rotate, the rotor steel ring with the permanent magnet is rotated, the direction and size of the magnetic flux in the ferrite stator core are changed, thereby forming an electromotive force in the three-phase stator winding and generating electrical energy. When a sinusoidal pulse power voltage is applied to the three-phase stator winding, the current flows through the number of turns of the three-phase stator winding under the action of the voltage, a magnetomotive force is generated, the magnetic resistance of the magnetic circuit is overcome to form a magnetic flux, the magnetic flux acts on the permanent magnet, thereby generating a magnetic attraction force and driving the rotor steel ring to rotate, and the rotating shaft generates torque. The utility model can switch the output mechanical energy and electrical energy according to actual requirements.

[0049] It should be understood that various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the utility model disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the utility model disclosure can be achieved, which is not limited herein.

[0050] The above specific embodiments do not constitute a limitation on the protection scope of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A motor converting mechanical energy into electrical energy output, characterized by: The motor comprises a rotor steel ring, a permanent magnet, a ferrite stator core, a three-phase stator winding, a stator core base, a disc support, a rotor disc, a bearing, a bearing bushing, a flange coupling and a rotating shaft. The ferrite stator core is installed in the stator core base, and the part of the ferrite stator core exposed from the stator core base is wound with the three-phase stator winding; the stator core base is connected with the bearing bushing through the disc support; the bearing bushing is sleeved on the rotating shaft, and the bearing is installed between the bearing bushing and the rotating shaft; the flange coupling is sleeved on the rotating shaft and is keyed connected with the rotating shaft; the rotor disc is sleeved on the flange coupling and is connected with the rotor steel ring; the permanent magnet is connected on the inner side of the rotor steel ring, and the permanent magnet is located on the outer side of the ferrite stator core.

2. The mechanical-to-electrical energy conversion output electric machine of claim 1, wherein: The ferrite stator core is in an integrated structure or a split structure.

3. The mechanical-to-electrical energy conversion output electric machine of claim 2, wherein: When the ferrite stator core is in the integrated structure, the ferrite stator core is a whole circular ring body, and a groove for winding the three-phase stator winding is processed on the outer ring of the circular ring body.

4. The mechanical-to-electrical energy conversion output electric machine of claim 2, wherein: When the ferrite stator core is in the split structure, the ferrite stator core is composed of stator core units spliced into a circular ring body, and the stator core unit is in an L shape, a T shape, a U shape or an E shape.

5. The mechanical-to-electrical energy conversion output electric machine of claim 4, wherein: When the stator core unit is in the L shape or the T shape, one splicing part of the stator core unit forms a positioning protrusion, and the other splicing part of the stator core unit forms a positioning groove.

6. The mechanical-to-electrical energy conversion output electric machine of claim 1, wherein: The phase coils of the three-phase stator winding are alternately wound on the ferrite stator core in a predetermined order.

7. The mechanical-to-electrical energy conversion output electric machine of claim 1, wherein: The flange part of the flange coupling is fixedly connected with the rotor disc.

8. The mechanical-to-electrical energy conversion output electric machine of claim 1, wherein: The number of the disc supports is two, and the opposite sides of the two disc supports form a stepped structure for limiting the stator core base.

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