Circulating strong magnetic power generator

Abstract

The invention relates to the technical field of generators, in particular to a circulating strong magnetic power generator which comprises a rotating shaft for receiving kinetic energy, a rotor assembly fixed on the rotating shaft, a stator assembly with a built-in electromagnetic coil and a rack, and a magnetic field generated by a permanent magnet on the rotor assembly penetrates through an air gap in the axial direction and enters an electromagnetic coil area of the stator assembly. The magnetic flux direction is periodically changed (N-S-N) when the rotor rotates, so that an alternating magnetic field is formed; when input kinetic energy drives the rotor assembly to rotate through the rotating shaft, the stator assembly cuts axial magnetic flux, induced electromotive force is generated in the electromagnetic coil according to the Faraday's law of electromagnetic induction, and three-phase alternating current with the phase difference of 120 degrees is generated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of generator technology, in particular to a circulating strong magnetic power generator. BACKGROUND

[0002] The permanent magnet generator is a kind of generator using permanent magnet (such as neodymium iron boron, samarium cobalt and other materials) to generate excitation magnetic field, without external excitation current, simple structure, high efficiency, widely used in wind power, small hydropower, automobile, aerospace and other fields.

[0003] According to the different input power, it is usually necessary to select the corresponding power interval of the permanent magnet generator, if the input power is overloaded, it will cause the output voltage to exceed the rated value, which may damage the connected power electronic equipment (such as rectifier, inverter), the generator itself will also be overheated due to the rotor, and the eddy current loss and hysteresis loss will increase with the increase of the speed, which will cause the temperature of the permanent magnet or the iron core to rise, which may cause irreversible demagnetization of the permanent magnet, and a fixed power permanent magnet generator is difficult to be compatible under different input power. SUMMARY

[0004] The purpose of the present application is to provide a circulating strong magnetic power generator, which has the advantages of convenient increase and decrease of the number of rotors and stators, and solves the problem that the existing strong magnetic power generator is difficult to be compatible under different input power.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a circulating strong magnetic power generator, comprising a rotating shaft for receiving kinetic energy, a rotor assembly fixed on the rotating shaft, a stator assembly with built-in electromagnetic coils, and a frame.

[0006] The frame comprises: vertical magnetic shielding sheets arranged at both ends of the generator, the magnetic shielding sheets are provided with a circular hole in the center, the circular hole is provided with a bearing, the rotating shaft is sleeved in the inner ring of the bearing, and a plurality of position corresponding positioning holes are arranged on the circumferential angle of the two magnetic shielding sheets, and the positioning rods pass through the opposite positioning holes on the two magnetic shielding sheets to fix the position and angle of the magnetic shielding sheets; The stator assembly comprises: an insulating substrate, the insulating substrate is provided with a positioning hole corresponding to the position of the positioning rod on the circumferential angle, the positioning rod passes through the positioning hole on the insulating substrate to fix the insulating substrate on the frame, a plurality of coil grooves are uniformly arranged on the insulating substrate along the axis, an electromagnetic coil is arranged in each coil groove, and the electromagnetic coil is sealed in the coil groove by an insulating material, the induction coil is connected to the output circuit, the center of the insulating substrate is provided with a circular hole with a diameter larger than that of the rotating shaft, so that the rotor assembly and the stator assembly are not in contact with each other, and the electromagnetic coils are divided into three groups and arranged alternately; The rotor assembly comprises: a plurality of layers of composite magnetic conductive sheets fixed on the rotating shaft between two adjacent stator assemblies, a plurality of permanent magnet mounting holes are uniformly arranged on the outermost two magnetic conductive sheets along the circumference, and the magnetic poles of the permanent magnets are alternately assembled in the mounting holes; the rotor assembly and the stator assembly form a magnetic resistance coupling; the magnetic field is guided through the stator, the air gap, the rotor and the magnetic yoke to form a closed loop, thereby reducing the magnetic loss.

[0007] Preferably, the stator assembly and the rotor assembly are repeatedly and superimposedly assembled by arranging a rotor assembly between two adjacent stator assemblies; the number of stator assemblies is one more than the number of rotor assemblies; and the number of stator assemblies and rotor assemblies is adjusted according to the output power.

[0008] Preferably, a weight-increasing sleeve ring is arranged between the rotating shaft and the magnetic conductive sheet in the rotor assembly; the weight-increasing sleeve ring functions as a flywheel; the diameter of the central circular hole of the insulating substrate needs to be increased; the diameter of the circular hole is greater than the diameter of the weight-increasing sleeve ring; and the weight-increasing sleeve ring and the rotating shaft can be integrally formed.

[0009] Preferably, a transmission gear set is further arranged at the end of the rotating shaft; a plurality of generator assemblies are linked through the transmission gear set; when one generator assembly is insufficient to consume the input power, a plurality of generator assemblies are connected in series through the transmission gear set to avoid overloading of the generator.

[0010] Preferably, when the number of rotors is large, the load of the rotating shaft is increased; and a bearing is arranged in the central circular hole of the insulating substrate to reduce the load of the rotating shaft.

[0011] Preferably, the power output end is further provided with a rectifier device and a storage battery.

[0012] Compared with the prior art, the present application has the following advantages: The rotor and the stator of the conventional permanent magnet generator are designed into a sheet-shaped structure; the rotor and the stator are installed side by side through positioning rods; the number of rotors and stators can be increased or decreased according to different input powers; The stator assembly and the rotor assembly in the present application are repeatedly and superimposedly assembled by arranging a rotor assembly between two adjacent stator assemblies; when the rotor rotates, the electromagnetic coils on the stator assembly can simultaneously cut the magnetic induction lines on both sides, thereby increasing the utilization rate of the magnetic field; The rotor assembly and the stator assembly form a magnetic resistance coupling; the magnetic field is guided through the stator, the air gap, the rotor and the magnetic yoke to form a closed loop, thereby reducing the magnetic loss. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above description is only a summary of the technical scheme of the present application; in order to more clearly understand the technical means of the present application and to implement the content of the description, the following describes the preferred examples of the present application in detail with reference to the drawings.

[0014] Fig. 1 This is a schematic diagram of the overall structure of the generator in this invention; Fig. 2 This is a schematic diagram of the generator structure with a hidden magnetic shielding sheet on one side in this invention; Fig. 3 This is a schematic diagram of the generator structure in this invention that conceals a magnetic shielding sheet on one side and a stator assembly. Fig. 4 This is a schematic diagram of the rotor assembly structure in this invention.

[0015] Reference numerals in the attached figures: 1. Rotating shaft; 2. Magnetic shielding sheet; 3. Rotor assembly; 4. Stator assembly; 5. Positioning rod; 6. Bearing; 4-1. Insulating substrate; 3-1. Composite magnetic sheet; 3-2. Permanent magnet; 3-3. Weight-adding collar. Detailed Implementation

[0016] like Figs. 1 to 4 As shown, a circulating strong magnetic power generator includes a rotating shaft-1 for receiving kinetic energy, a rotor assembly-3 fixed on the rotating shaft-1, a stator assembly-4 with built-in electromagnetic coils, and a frame.

[0017] The frame includes: vertical magnetic shielding plates-2 set at both ends of the generator, with a circular hole in the center of the magnetic shielding plate-2, a bearing-6 installed in the circular hole, a rotating shaft-1 sleeved in the inner ring of the bearing-6, and multiple corresponding positioning holes at the circumference of the two magnetic shielding plates-2. Positioning rods-5 pass through the corresponding positioning holes on the two magnetic shielding plates-2 to fix the position and angle of the magnetic shielding plates-2. The inner layer of the magnetic shielding plate-2 is pure iron, and the outer layer is epoxy resin.

[0018] The stator assembly-4 includes: an insulating substrate-4-1, with positioning holes at the circumference of the insulating substrate-4-1 corresponding to the positions of the positioning rod-5. The positioning rod-5 passes through the positioning holes on the insulating substrate-4-1 to fix the insulating substrate-4-1 to the frame. Multiple coil slots are evenly distributed along the axis on the insulating substrate-4-1, and each coil slot contains an electromagnetic coil, which is sealed in the coil slot by insulating material. The induction coil is connected to the output circuit. The center of the insulating substrate-4-1 has a circular hole with a diameter larger than that of the rotating shaft-1, so that the rotor assembly-3 and the stator assembly-4 do not contact each other. The insulating substrate-4-1 is made of epoxy resin, polyimide or mica, ceramic, glass fiber or other materials. The electromagnetic coils are connected in a three-phase star or delta configuration. When the rotor rotates, it generates three-phase alternating current with a phase difference of 120°.

[0019] Rotor assembly-3 includes: fixed on the shaft-1 between two adjacent stator assembly-4 multilayer composite magnetic sheet-3-1, the outermost two magnetic sheet on the circumferential uniform distribution of a plurality of permanent magnet-3-2 installation hole, permanent magnet-3-2 magnetic pole alternately assembled in the installation hole, rotor assembly-3 and stator assembly-4 form reluctance coupling, through the yoke guide magnetic field through the stator, air gap, rotor, yoke form closed loop, reduce the loss of magnetic flux, magnetic sheet using 35W250 silicon steel sheet, iron loss≤2.5W / kg, permanent magnet-3-2 using N52 rong iron boron magnet, residual magnetism 1.43T, coercive force 1100KA / M.

[0020] The stator assembly-4 and rotor assembly-3 are repeatedly stacked and assembled by setting a rotor assembly-3 between two adjacent stator assemblies-4. The number of stator assemblies-4 is 6, and the number of rotors is 5. The number of stator assemblies-4 and rotor assemblies-3 can be adjusted according to the output power.

[0021] The rotor assembly-3 is provided with a weight-increasing ring-3-3 between the shaft-1 and the magnetic sheet. The weight-increasing ring-3-3 functions as a flywheel. In this case, the diameter of the center circular hole of the insulating substrate-4-1 needs to be increased, and the diameter of the circular hole is greater than the diameter of the weight-increasing ring-3-3. The weight-increasing ring-3-3 is integrally formed with the shaft-1.

[0022] The shaft-1 is further provided with a transmission gear set. A plurality of generator sets are linked through the transmission gear set. When one generator set is not enough to consume the input power, a plurality of generator sets are connected in series through the transmission gear set to avoid overloading of the generator.

[0023] When the number of rotors is 5 and the load of the shaft-1 increases, a bearing is arranged in the center circular hole of the insulating substrate-4-1 to reduce the load of the shaft-1.

[0024] In use, the magnetic field generated by the permanent magnet-3-2 on the rotor assembly-3 passes through the air gap in the axial direction, enters the electromagnetic coil area of the stator assembly-4, and the magnetic flux direction periodically changes (N→S→N) when the rotor rotates, forming an alternating magnetic field. When the input kinetic energy drives the rotor assembly-3 to rotate through the shaft-1, the stator assembly-4 cuts the axial magnetic flux. According to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the electromagnetic coil, generating a three-phase alternating current with a phase difference of 120°. The three-phase alternating current is rectified by a rectifier and connected to an external circuit for use.

[0025] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A circulating strong magnetic power generator, comprising a rotating shaft (1) receiving kinetic energy, a rotor assembly (3) fixed on the rotating shaft (1), a stator assembly (4) with built-in electromagnetic coils, and a frame, characterized in that: the frame comprises vertical magnetic shielding plates (2) arranged at both ends of the generator, the magnetic shielding plates (2) are provided with a circular hole in the center, a bearing (6) is arranged in the circular hole, the rotating shaft (1) is sleeved in the inner ring of the bearing (6), a plurality of position corresponding positioning holes are arranged at the circumferential angle of the two magnetic shielding plates (2), and a positioning rod (5) penetrates through the opposite positioning holes of the two magnetic shielding plates (2) to fix the position and angle of the magnetic shielding plates (2); the stator assembly (4) comprises an insulating substrate (4-1), the insulating substrate (4-1) is provided with a positioning hole corresponding to the position of the positioning rod (5) at the circumferential angle, the positioning rod (5) penetrates through the positioning hole on the insulating substrate (4-1) to fix the insulating substrate (4-1) on the frame, a plurality of coil grooves are uniformly arranged on the insulating substrate (4-1) along the axis, one electromagnetic coil is arranged in each coil groove and is sealed in the coil groove through an insulating material, the induction coil is connected to an output circuit, the insulating substrate (4-1) is provided with a circular hole with a diameter larger than that of the rotating shaft (1) in the center, so that the rotor assembly (3) and the stator assembly (4) do not contact each other; the rotor assembly (3) comprises a plurality of layers of composite magnetic conductive sheets (3-1) fixed on the rotating shaft (1) between two adjacent stator assemblies (4), a plurality of permanent magnet (3-2) mounting holes are uniformly arranged on the two outermost magnetic conductive sheets along the circumference, and the permanent magnets (3-2) are alternately assembled in the mounting holes. The stator assembly (4) and the rotor assembly (3) are repeatedly stacked and assembled by arranging a rotor assembly (3) between two adjacent stator assemblies (4), the number of stator assemblies (4) is one more than the number of rotor assemblies (3), and the number of stator assemblies (4) and rotor assemblies (3) is adjusted according to the output power.

2. A cyclic strong magnetic power generator according to claim 1, characterized in that: The rotor assembly (3) is provided with a weight increasing sleeve ring (3-3) between the rotating shaft (1) and the magnetic conductive sheet, the weight increasing sleeve ring (3-3) plays a role of a flywheel, and the weight increasing sleeve ring (3-3) and the rotating shaft (1) are integrally formed.

3. A cyclic strong magnetic power generator according to claim 1, characterized in that: The rotating shaft (1) is provided with a transmission gear at the end, and the central circular hole of the insulating substrate (4-1) is provided with a bearing.

4. A cyclic strong magnetic power generator according to claim 1, characterized in that: ​

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