High-power permanent magnet generator

Abstract

The utility model discloses a high-power permanent magnet generator, and belongs to the field of generators. A high-power permanent magnet generator comprises a shell, a rotor is arranged in the shell, a permanent magnet matched with the rotor is installed on the inner wall of the shell, one end of the rotor is located in the shell and connected with fan blades used for blowing air to cool the interior of the shell, and a shielding mechanism is arranged in the shell. The fan blades are annularly distributed around the fan blades; through mutual cooperation of the shielding mechanism, the opening mechanism and the telescopic assembly, in the operation process of the motor, the shielding mechanism is started to work and operate to do reciprocating motion, switching and changing of the direction of cold air blown into the fan blades can be achieved, the blown-in airflow is made to be stronger, the air cooling and heat dissipation effect on the interior of the shell is improved, and the service life of the shell is prolonged. A traditional dispersed air blowing mode is changed, good use performance is provided for the rotor and the permanent magnet in the shell, and faults are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a high-power permanent magnet generator. Background Art

[0002] Permanent magnet generators use permanent magnets to replace traditional electromagnets to generate a stable magnetic field. They have the advantages of simple structure, compact size, light weight, high efficiency, and good reliability. In particular, high-power permanent magnet generators have become one of the key technologies in wind power generation, hydropower generation, and emerging electric vehicles and distributed energy systems because they can provide more efficient energy conversion.

[0003] In the prior art, as the power of the permanent magnet generator increases, the permanent magnet material in the motor is more sensitive to temperature. Excessive temperature may cause demagnetization of the magnet, thereby affecting the performance of the generator. Generally, fan blades are installed in the casing. As the rotor rotates synchronously, external cold air is blown into the casing to dissipate heat and cool it down. However, in this way, the airflow generated by the fan blades is relatively dispersed. Although the rotor and the permanent magnet part can both achieve the effect of wind cooling, the dispersion of the cold air flow leads to a poor effect of wind cooling, affecting its heat dissipation effect. Therefore, we propose a high-power permanent magnet generator to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the utility model is to solve the problem that the airflow generated by the fan blades in the prior art is relatively dispersed. Although the rotor and the permanent magnet part can obtain the effect of wind cooling, the dispersion of the cold air flow leads to poor wind cooling effect, affecting the heat dissipation effect, and a high-power permanent magnet generator is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-power permanent magnet generator comprises a shell, a rotor is arranged inside the shell, a permanent magnet matched with the rotor is installed on the inner wall of the shell, one end of the rotor is located in the shell and is connected to a fan blade for blowing air to cool the shell, a shielding mechanism is arranged in the shell and is distributed around the fan blade in a ring shape, and is used to change the flow direction of the fan blade to blow air at the rotor; an opening mechanism is installed in the shell, one end of which is sleeved on the rotor and is used to blow the airflow generated at the fan blade to the permanent magnet, and a telescopic component is also arranged on the opening mechanism to extend the length of the opening mechanism when the opening mechanism is in the opened state.

[0007] Preferably, the shielding mechanism comprises a driving part installed on the inner wall of the shell, a mounting block is fixed to the end of the driving part, a shielding plate is installed at the end of the mounting block, and the shielding plate is in a semi-conical shape.

[0008] Preferably, the expansion mechanism includes a movable plate fixed on one side of two of the mounting blocks, a sliding rod is fixed on the surface of the movable plate, the end of the sliding rod is connected to a first piston, the first piston is slidably connected in a connecting cylinder, the connecting cylinder is mounted on the inner wall of the shell, one side of the connecting cylinder is connected to a delivery pipe, and an expansion piece is provided at the end of the delivery pipe.

[0009] Preferably, the expansion member includes a mounting sleeve connected to the end of the conveying pipe, the mounting sleeve is arranged on the surface of the rotor, an airbag is installed on the surface of the mounting sleeve, the end of the conveying pipe passes through the interior of the mounting sleeve and is connected to the airbag, and one end surface of the mounting sleeve is rotatably connected to a rotating plate.

[0010] Preferably, an elastic membrane is connected between two adjacent rotating plates, and a guide plate is installed on the surface of the rotating plate.

[0011] Preferably, the telescopic assembly includes an air duct connected to the delivery pipe, the end of the air duct penetrates the inner wall of the mounting sleeve and extends to the outside to be fixedly connected to the rotating plate, the rotating plate is provided with a cavity inside, the second piston is slidably connected inside the cavity, a telescopic plate is fixed to one side of the second piston, and the telescopic plate is slidably connected inside the rotating plate. Preferably, a fixing rod is fixed to the surface of one end of the rotating plate, a support plate is fixed to the end of the fixing rod, one end of the support plate is fixedly connected to the inner wall of the shell, the rotor is rotatably connected to the support plate through a bearing, and a through hole is provided on the surface of the support plate below the rotor.

[0012] Preferably, an air inlet is opened on one side of the shell, and a dustproof net is arranged inside the air inlet.

[0013] Preferably, heat dissipation fins are embedded in the outer wall of the shell, and the heat dissipation fins are in close contact with the permanent magnets.

[0014] Preferably, symmetrically distributed support seats are installed at the bottom of the shell, and heat dissipation holes are opened on the surface of the shell.

[0015] Compared with the prior art, the utility model provides a high-power permanent magnet generator, which has the following beneficial effects:

[0016] 1. This kind of high-power permanent magnet generator is provided with a shielding mechanism in the shell. When the fan blades in the shell generate airflow through the rotation of the rotor, the shielding mechanism can drive the shielding plate to move, and shield and block the blowing direction of one side of the fan blade, thereby changing the wind direction of the cold air blown in from the fan blade. The shape of the shielding plate is designed so that the wind blown in from the fan blade is gathered by the shielding plate and then blown to the rotor, so as to blow and cool the rotor in the shell, thereby improving the air-cooling effect.

[0017] 2. This kind of high-power permanent magnet generator, when the shielding mechanism is running, the interval time of reciprocating operation, as the shielding plate moves upward, can simultaneously drive the opening mechanism to run synchronously, so that the rotating plate on the opening mechanism cooperates with the guide plate to perform the opening operation, thereby changing the wind direction of the fan blades again, so that the incoming wind is gathered in the direction of the permanent magnet for concentrated air cooling, and in the case of reciprocating operation, the air cooling and heat dissipation effect of the device is further improved.

[0018] 3. This kind of high-power permanent magnet generator can drive the telescopic component to operate synchronously when the expansion mechanism is in operation, so that part of the air squeezed when the expansion mechanism is in operation is transported to the inside of the rotating plate, so that the telescopic plate extends inside the rotating plate, extending the expansion range of the rotating plate, making it easier for the wind blown in from the fan blades to blow to the position of the permanent magnet, thereby enhancing the wind cooling effect on the permanent magnet.

[0019] The parts not involved in the device are the same as the prior art or can be implemented by using the prior art. The utility model cooperates with the shielding mechanism, the opening mechanism and the telescopic component. During the operation of the motor, the shielding mechanism is started to work and perform reciprocating motion, which can realize the switching of the wind direction of the cold air blown in from the fan blades, making the airflow stronger, improving the effect of air cooling and heat dissipation inside the shell, changing the traditional way of dispersing the air blowing, providing better performance for the rotor and the permanent magnet in the shell, and reducing the occurrence of faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-power permanent magnet generator proposed by the utility model;

[0021] Figure 2 It is a side view cross-sectional three-dimensional structural schematic diagram of a high-power permanent magnet generator proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of the side cross-sectional structure of a high-power permanent magnet generator proposed by the utility model;

[0023] Figure 4 A high-power permanent magnet generator proposed by the utility model Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0024] Figure 5 This is a partial three-dimensional structural schematic diagram of a shielding mechanism of a high-power permanent magnet generator proposed by the utility model;

[0025] Figure 6 This is a partial three-dimensional structural diagram of a support mechanism in a high-power permanent magnet generator proposed by the utility model;

[0026] Figure 7 This is a schematic diagram of a partial cross-sectional structure of a support mechanism in a high-power permanent magnet generator proposed by the utility model;

[0027] Figure 8 This is another side structural schematic diagram of a high-power permanent magnet generator proposed by the utility model.

[0028] In the figure: 1. shell; 2. rotor; 3. permanent magnet; 4. fan blade; 5. shielding mechanism; 501. driving part; 502. mounting block; 503. shielding plate; 6. opening mechanism; 601. movable plate; 602. sliding rod; 603. first piston; 604. connecting tube; 605. delivery pipe; 606. mounting sleeve; 607. air bag; 608. rotating plate; 609. guide plate; 610. elastic membrane; 7. telescopic assembly; 701. air guide tube; 702. cavity; 703. second piston; 704. telescopic plate; 8. fixing rod; 9. support plate; 10. through hole; 11. air inlet; 12. dust net; 13. heat dissipation fin; 14. support seat. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] Reference Figure 1-8 A high-power permanent magnet generator comprises a shell 1, a rotor 2 is arranged inside the shell 1, a permanent magnet 3 adapted to the rotor 2 is installed on the inner wall of the shell 1, one end of the rotor 2 is located in the shell 1 and connected to a fan blade 4 for blowing air and cooling the shell 1, a shielding mechanism 5 arranged in the shell 1 is distributed around the fan blade 4 in a ring shape, and is used to change the flow direction of the fan blade 4 to blow air at the rotor 2; an opening mechanism 6 installed in the shell 1, one end of which is sleeved on the rotor 2, and is used to blow the airflow generated at the fan blade 4 to the permanent magnet 3, and a telescopic component 7 is also arranged on the opening mechanism 6, and when the opening mechanism 6 is in the opening state, the length of the opening mechanism 6 is extended.

[0032] With this solution, during use, the rotor 2 and the permanent magnet 3 cooperate with each other in the shell 1, so that the rotor 2 rotates, and one end of the rotor 2 is connected to the fan blade 4, which drives the fan blade 4 to run synchronously during the rotation, and then blows the cold air outside the shell 1 into the inside of the shell 1, and performs air cooling and heat dissipation on the rotor 2 and the permanent magnet 3 inside the shell 1. Considering that in the actual operation process, the airflow generated by the fan blade 4 disturbing the air is relatively scattered, so after the cold air enters the shell 1, it contacts the rotor 2 and the permanent magnet 3, and its air cooling effect is reduced. Therefore, when the present solution is adopted, through the shielding mechanism 5 provided in the shell 1, when the fan blade 4 rotates and runs, the shielding plate 503 is driven by the shielding mechanism 5 to move back and forth, so that the shielding plate 503 is close to the side of the wind direction blown out from the fan blade 4, and the blown airflow is blocked. In this way, the flow direction of the airflow is changed, so that the airflow is gathered and directed to the rotor 2, and the rotor 2 is cooled. Air cooling, after setting the interval time, when the shielding plate 503 at the shielding mechanism 5 is reset, the shielding mechanism 5 and the opening mechanism 6 cooperate with each other to drive the opening mechanism 6 to operate, so that the extruded gas generated by the operation of the opening mechanism 6 causes the airbag 607 to expand, and then the rotating plate 608 is opened. When multiple rotating plates 608 are opened and cooperated with the guide plate 609, they are in a cone shape, which can change the airflow direction of the fan blade 4 again, so that the blown airflow blows to the permanent magnet 3, and the permanent magnet 3 is air-cooled and cooled. During the operation of the opening mechanism 6, the telescopic component 7 is driven to operate synchronously, thereby extending the length of the rotating plate 608, so that the wind blown in from the fan blade 4 is better blown to the position of the permanent magnet 3, and the air-cooling effect on the permanent magnet 3 is enhanced. Through the above scheme, the wind direction of the cold air blown in from the fan blade 4 can be switched, so that the blown airflow is stronger, and the air-cooling and heat dissipation effect inside the shell 1 is improved.

[0033] In a preferred embodiment, referring to Figure 1-8 A high-power permanent magnet generator comprises a shell 1, a rotor 2 is arranged inside the shell 1, a permanent magnet 3 adapted to the rotor 2 is installed on the inner wall of the shell 1, one end of the rotor 2 is located in the shell 1 and is connected to a fan blade 4 for blowing air to cool the shell 1, a shielding mechanism 5 arranged in the shell 1 is distributed around the fan blade 4 in a ring shape, and is used to change the flow direction of the fan blade 4 to blow air at the rotor 2; an opening mechanism 6 installed in the shell 1, one end of which is sleeved on the rotor 2 and is used to blow the airflow generated at the fan blade 4 to the permanent magnet 3, and a telescopic component 7 is also arranged on the opening mechanism 6. When the opening mechanism 6 is in the opening state, the length of the opening mechanism 6 is extended, and the shielding mechanism 5 comprises a driving part 501 installed on the inner wall of the shell 1, a mounting block 502 is fixed to the end of the driving part 501, and a shielding plate 503 is installed at the end of the mounting block 502, and the shielding plate 503 is in a semi-conical shape.

[0034] Specifically, the driving unit 501 adopts a driving source such as an electric push rod to replace the driving operation, wherein a controller for controlling the opening and closing of the driving unit 501 can be installed on the shell 1, and the interval time of the reciprocating movement of the baffle plate 503 is set, wherein the controller uses a commonly used model in the market, and when the driving unit 501 is started, it drives the baffle plate 503 to move, and multiple baffle plates 503 are connected to form a large cone, so that the airflow blowing from the fan blades 4 is gathered and ejected from the small hole at one end of the baffle plate 503, and the ejection direction is blown toward the rotor 2, thereby blowing air to cool the rotor 2.

[0035] It should be noted that, when the shielding plate 503 moves downward, it is located on the side of the fan blade 4 in the direction of the wind blowing out, and the shielding plate 503 will not come into contact with the fan blade 4, and the moving distances of the multiple shielding plates 503 are the same.

[0036] In a preferred embodiment, referring to Figure 1-8 A high-power permanent magnet generator comprises a shell 1, a rotor 2 is arranged inside the shell 1, a permanent magnet 3 matching the rotor 2 is installed on the inner wall of the shell 1, one end of the rotor 2 is located in the shell 1 and is connected to a fan blade 4 for blowing air to cool the shell 1, a shielding mechanism 5 arranged in the shell 1 is distributed around the fan blade 4 in a ring shape, and is used to change the flow direction of the fan blade 4 to blow air at the rotor 2; an opening mechanism 6 installed in the shell 1, one end of which is sleeved on the rotor 2, and is used to blow the airflow generated at the fan blade 4 to the permanent magnet 3, and a telescopic component 7 is also arranged on the opening mechanism 6. When the opening mechanism 6 is in the opening state, the length of the opening mechanism 6 is extended, and the shielding mechanism 5 comprises a driving part 501 installed on the inner wall of the shell 1, a mounting block 502 is fixed to the end of the driving part 501, and a shielding plate 503 is installed at the end of the mounting block 502, and the shielding plate 503 is in a semi-conical shape. The expansion mechanism 6 includes a movable plate 601 fixed on one side of two mounting blocks 502, a sliding rod 602 is fixed on the surface of the movable plate 601, an end of the sliding rod 602 is connected to a first piston 603, the first piston 603 is slidably connected in a connecting tube 604, the connecting tube 604 is mounted on the inner wall of the shell 1, a side of the connecting tube 604 is connected to a delivery pipe 605, an expansion member is provided at the end of the delivery pipe 605, the expansion member includes a mounting sleeve 606 connected to the end of the delivery pipe 605, the mounting sleeve 606 is mounted on the surface of the rotor 2, an airbag 607 is installed on the surface of the mounting sleeve 606, an end of the delivery pipe 605 passes through the interior of the mounting sleeve 606 and is connected to the airbag 607, one end surface of the mounting sleeve 606 is rotatably connected to a rotating plate 608, an elastic membrane 610 is connected between two adjacent rotating plates 608, and a guide plate 609 is installed on the surface of the rotating plate 608.

[0037] By adopting the above scheme, when the shielding plate 503 retracts and resets, the two mounting blocks 502 are connected to the movable plate 601 at one side, driving the movable plate 601 to move synchronously, and the sliding rod 602 on the surface of the movable plate 601 slides inside the connecting tube 604, so that the first piston 603 squeezes the air inside the connecting tube 604, and the squeezed air is transported to the inside of the airbag 607 through the conveying pipe 605, so that the airbag 607 expands, and the expansion of the airbag 607 has a supporting effect on the rotating plate 608, so that the rotating plate 608 and the guide plate 609 are connected to form a cone, which is expanded. Operation, when the airflow blown in by the fan blades 4 encounters the cone, the blowing direction of the airflow is changed, so that the airflow is blown to the permanent magnet 3. In this way, the airflow blown to the rotor 2 is concentrated and blown to the permanent magnet 3, increasing the strength of the airflow blowing, thereby improving the air-cooling effect on the permanent magnet 3. A guide plate 609 is arranged on the surface of the rotating plate 608, and a plurality of guide plates 609 form an airflow groove, which can smooth the contacting airflow and improve the effect of blowing, cooling and cooling the permanent magnet 3. The guide plate 609 is made of flexible material, has good elastic deformation performance, and is convenient for extension and retraction.

[0038] In a preferred embodiment, referring to Figure 1-8A high-power permanent magnet generator comprises a housing 1, a rotor 2 is arranged inside the housing 1, a permanent magnet 3 adapted to the rotor 2 is installed on the inner wall of the housing 1, one end of the rotor 2 is located in the housing 1 and connected to a fan blade 4 for blowing air and cooling the housing 1, a shielding mechanism 5 arranged in the housing 1 is distributed around the fan blade 4 in a ring shape, and is used to change the flow direction of the fan blade 4 to blow air at the rotor 2; an opening mechanism 6 installed in the housing 1, one end of which is sleeved on the rotor 2, and is used to blow the airflow generated by the fan blade 4 to the permanent magnet 3, and the opening mechanism 6 is installed in the housing 1. The structure 6 is also provided with a telescopic component 7. When the expansion mechanism 6 is in the expansion state, the length of the expansion mechanism 6 is extended. The shielding mechanism 5 includes a driving part 501 installed on the inner wall of the shell 1, and a mounting block 502 is fixed at the end of the driving part 501. A shielding plate 503 is installed at the end of the mounting block 502. The shielding plate 503 is in a semi-conical shape. The expansion mechanism 6 includes a movable plate 601 fixed on one side of two of the mounting blocks 502. A sliding rod 602 is fixed on the surface of the movable plate 601. The end of the sliding rod 602 is connected to a first piston 603. The first piston 603 is slidably connected in the connecting tube 604, and the connecting tube 604 is installed on the inner wall of the shell 1. A delivery pipe 605 is connected to one side of the connecting tube 604. An expansion piece is provided at the end of the delivery pipe 605. The expansion piece includes a mounting sleeve 606 connected to the end of the delivery pipe 605. The mounting sleeve 606 is sleeved on the surface of the rotor 2. An airbag 607 is installed on the surface of the mounting sleeve 606. The end of the delivery pipe 605 passes through the interior of the mounting sleeve 606 and is connected to the airbag 607. One end surface of the mounting sleeve 606 is rotatably connected to a rotating plate 608. An elastic membrane 610 is connected between two adjacent rotating plates 608, and a guide plate 609 is installed on the surface of the rotating plate 608. The telescopic component 7 includes an air guide pipe 701 connected to the delivery pipe 605, and the end of the air guide pipe 701 passes through the inner wall of the mounting sleeve 606 and extends to the outside to be fixedly connected to the rotating plate 608. A cavity 702 is opened inside the rotating plate 608, and a second piston 703 is slidably connected inside the cavity 702. A telescopic plate 704 is fixed to one side of the second piston 703, and the telescopic plate 704 is slidably connected inside the rotating plate 608.

[0039] By adopting the above scheme, when the delivery pipe 605 delivers squeezed air, part of the gas is delivered to the air guide pipe 701 through the delivery pipe 605, and the gas is delivered to the cavity 702 through the air guide pipe 701. The air in the cavity 702 drives the second piston 703 to slide inside the rotating plate 608 through compression, thereby driving the telescopic plate 704 to extend from the inside of the rotating plate 608, thereby extending the length of the rotating plate 608, and increasing the expansion range of the cone composed of the rotating plate 608 and the guide plate 609. In this way, the airflow can be more smoothly blown directly to the permanent magnet 3 after changing its flow direction, so as to cool the permanent magnet 3 with air.

[0040] In a preferred embodiment, referring to Figure 1-8 A high-power permanent magnet generator comprises a housing 1, a rotor 2 is arranged inside the housing 1, a permanent magnet 3 adapted to the rotor 2 is installed on the inner wall of the housing 1, one end of the rotor 2 is located in the housing 1 and connected to a fan blade 4 for blowing air and cooling the housing 1, a shielding mechanism 5 arranged in the housing 1 is distributed around the fan blade 4 in a ring shape, and is used to change the flow direction of the fan blade 4 to blow air at the rotor 2; an opening mechanism 6 installed in the housing 1, one end of which is sleeved on the rotor 2, and is used to blow the airflow generated at the fan blade 4 to the permanent magnet 3, and a telescopic component 7 is also arranged on the opening mechanism 6, when the opening mechanism 6 is in the opening state , extending the length of the spreading mechanism 6, a fixing rod 8 is fixed to the surface of one end of the rotating plate 608, a supporting plate 9 is fixed to the end of the fixing rod 8, one end of the supporting plate 9 is fixedly connected to the inner wall of the shell 1, the rotor 2 is rotatably connected in the supporting plate 9 through a bearing, a through hole 10 is provided on the surface of the supporting plate 9 below the rotor 2, an air inlet 11 is provided on one side of the shell 1, a dustproof net 12 is provided inside the air inlet 11, a heat dissipation fin 13 is embedded in the outer wall of the shell 1, the heat dissipation fin 13 is in contact with the permanent magnet 3, symmetrically distributed support seats 14 are installed at the bottom of the shell 1, and a heat dissipation port is provided on the surface of the shell 1.

[0041] Specifically, the setting of the support plate 9 can, on the one hand, support and limit one end of the rotor 2, and on the other hand, support and fix the mounting sleeve 606 through the fixing rod 8, wherein the mounting sleeve 606 is sleeved on the rotor 2 and does not contact the surface of the rotor 2. When the fan blades 4 blow air to the inside of the shell 1, the heat is discharged through the heat dissipation port on the shell 1 to prevent it from staying in the shell 1. The setting of the heat dissipation fins 13 facilitates the conduction and heat dissipation of the permanent magnet 3 inside the shell 1, thereby further improving the heat dissipation effect. The setting of the dustproof net 12 can prevent external dust and foreign matter from entering the interior of the shell 1.

[0042] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-power permanent magnet generator, comprising a housing (1), a rotor (2) being arranged inside the housing (1), a permanent magnet (3) matching the rotor (2) being mounted on the inner wall of the housing (1), one end of the rotor (2) being located inside the housing (1) and connected to a fan blade (4) for blowing air and cooling the inside of the housing (1), characterized in that: A shielding mechanism (5) is arranged in the housing (1) and is distributed in a ring shape around the fan blades (4) and is used to change the flow direction of the air blown by the fan blades (4) to blow air towards the rotor (2); An expansion mechanism (6) installed in the housing (1) has one end sleeved on the rotor (2) and is used to blow the airflow generated by the fan blades (4) toward the permanent magnet (3). The expansion mechanism (6) is also provided with a telescopic component (7) for extending the length of the expansion mechanism (6) when the expansion mechanism (6) is in the expanded state.

2. A high-power permanent magnet generator according to claim 1, characterized in that: The shielding mechanism (5) comprises a driving part (501) mounted on the inner wall of the housing (1); a mounting block (502) is fixed to the end of the driving part (501); a shielding plate (503) is mounted to the end of the mounting block (502); and the shielding plate (503) is in a semi-conical shape.

3. A high-power permanent magnet generator according to claim 2, characterized in that: The spreading mechanism (6) comprises a movable plate (601) fixed on one side of two of the mounting blocks (502); a sliding rod (602) is fixed on the surface of the movable plate (601); the end of the sliding rod (602) is connected to a first piston (603); the first piston (603) is slidably connected in a connecting tube (604); the connecting tube (604) is mounted on the inner wall of the housing (1); a delivery pipe (605) is connected to one side of the connecting tube (604); and a spreading piece is provided at the end of the delivery pipe (605).

4. A high-power permanent magnet generator according to claim 3, characterized in that: The expansion member comprises a mounting sleeve (606) connected to the end of a delivery tube (605); the mounting sleeve (606) is sleeved on the surface of the rotor (2); an airbag (607) is mounted on the surface of the mounting sleeve (606); the end of the delivery tube (605) passes through the interior of the mounting sleeve (606) and is connected to the airbag (607); and one end surface of the mounting sleeve (606) is rotatably connected to a rotating plate (608).

5. A high-power permanent magnet generator according to claim 4, characterized in that: An elastic membrane (610) is connected between two adjacent rotating plates (608), and a guide plate (609) is installed on the surface of the rotating plate (608).

6. A high-power permanent magnet generator according to claim 5, characterized in that: The telescopic assembly (7) comprises an air guide tube (701) connected to the delivery tube (605); an end of the air guide tube (701) penetrates the inner wall of the mounting sleeve (606) and extends to the outside to be fixedly connected to the rotating plate (608); a cavity (702) is provided inside the rotating plate (608); a second piston (703) is slidably connected inside the cavity (702); a telescopic plate (704) is fixed to one side of the second piston (703); and the telescopic plate (704) is slidably connected inside the rotating plate (608).

7. A high-power permanent magnet generator according to claim 6, characterized in that: A fixing rod (8) is fixed to one end surface of the rotating plate (608), a supporting plate (9) is fixed to the end of the fixing rod (8), one end of the supporting plate (9) is fixedly connected to the inner wall of the shell (1), the rotor (2) is rotatably connected to the supporting plate (9) via a bearing, and a through hole (10) is provided on the surface of the supporting plate (9) below the rotor (2).

8. A high-power permanent magnet generator according to claim 1, characterized in that: An air inlet (11) is provided on one side of the shell (1), and a dustproof net (12) is provided inside the air inlet (11).

9. A high-power permanent magnet generator according to claim 1, characterized in that: A heat dissipation fin (13) is embedded and installed on the outer wall of the housing (1), and the heat dissipation fin (13) is in close contact with the permanent magnet (3).

10. A high-power permanent magnet generator according to claim 1, characterized in that: The bottom of the shell (1) is provided with symmetrically distributed support seats (14), and the surface of the shell (1) is provided with heat dissipation openings.

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