Magnetic range-extending flywheel energy storage system and use method

Abstract

The invention relates to a magnetic force range extending flywheel energy storage system and a using method, the magnetic force range extending flywheel energy storage system comprises a rack, and a magnetic cylinder assembly, a pneumatic guiding magnetic force driving assembly, a power generation assembly, a Hall sensor assembly and a control assembly which are arranged on the rack, the pneumatic guide magnetic force driving assembly is arranged outside the magnetic cylinder assembly and drives the magnetic cylinder assembly to rotate, the rotation of the magnetic cylinder assembly drives the power generation assembly to generate power and store energy, and the Hall sensor assembly is used for detecting the rotation position of the magnetic cylinder assembly. The control assembly is connected with electrical elements in the magnetic barrel assembly, the pneumatic guide magnetic force driving assembly, the power generation assembly and the Hall sensor assembly so as to achieve the control function. The magnetic force of the permanent magnet is combined with the flywheel, so that environment-friendly, efficient and sustainable energy storage is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of flywheel energy storage, and more specifically, to a magnetic range-extending flywheel energy storage system and a use method thereof. Background Art

[0002] Now, with the rapid development of electrochemical energy storage, a trend of integrated development of new energy and energy storage has been initially formed. However, due to the limitation of water resources, the development of pumped storage is relatively stable, solar thermal energy storage is still in its infancy, and flywheel energy storage is gradually entering the introduction period of commercial scale application.

[0003] As a manufactured energy source, flywheel energy storage will give full play to the advantages of high-frequency physical energy storage technology based on different application scenarios, combine with other energy storage technologies to demonstrate the best effect, and promote innovation and transformation of the energy industry towards safety, greenness and efficiency.

[0004] At present, domestic flywheel energy storage is in the extensive experimental stage, small prototypes have been successfully developed, and multiple demonstration projects have appeared. The technical threshold of the flywheel energy storage system is relatively high, and there are still some urgent problems to be solved in composite material structure technology, magnetic bearing technology, and high-speed and high-efficiency motor technology in a vacuum. High speed, composite rotors, and internal fixed and external rotating structures are the future development direction. Chinese companies have basically mastered the alloy flywheel technology, but there is a clear gap compared with foreign countries in terms of structural design, composite rotor flywheels, etc. The present invention is intended to propose a feasible flywheel energy storage system. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a magnetic range-extended flywheel energy storage system and a method of use, and proposes a structure that combines the magnetic force of a permanent magnet with a flywheel to achieve environmentally friendly, efficient and sustainable energy storage.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A magnetic range-extending flywheel energy storage system comprises a frame and a magnetic cylinder assembly, a pneumatically guided magnetic drive assembly, a power generation assembly, a Hall sensor assembly and a control assembly arranged on the frame, wherein the control assembly is respectively connected to the magnetic cylinder assembly, the pneumatically guided magnetic drive assembly, the power generation assembly and the Hall sensor assembly;

[0008] The magnetic cylinder assembly comprises a rotating cylinder, a rotating shaft, a counterweight flywheel and a guide rail magnet group. The rotating cylinder is fixedly provided with a rotating shaft along its own axis. The rotating shaft penetrates the rotating cylinder, and the two ends of the rotating shaft are rotatably connected to the frame through bearings. A counterweight flywheel is arranged in the rotating cylinder, and two counterweight flywheels are respectively fixed at two ends of the rotating cylinder, and the two counterweight flywheels are coaxial with the rotating shaft. The guide rail magnet group is arranged on the outer side of the rotating cylinder, and the number of the guide rail magnet groups is greater than or equal to one group. The guide rail magnet group comprises two rows of permanent magnet groups, and the permanent magnet group is formed by arranging a plurality of permanent magnets.

[0009] The Hall sensor assembly is arranged on the frame and is located outside one of the end surfaces of the rotating cylinder;

[0010] The power generation assembly is arranged on the frame and connected to the rotating shaft;

[0011] The pneumatic guide magnetic drive assembly is arranged on a frame, and two pneumatic guide magnetic drive assemblies are symmetrically arranged outside the circumferential side of the rotating cylinder. The two pneumatic guide magnetic drive assemblies are controlled by a pneumatic valve group, and the pneumatic valve is connected to an air compressor. The pneumatic guide magnetic drive assembly includes a plurality of pneumatic mechanisms, and the number of the pneumatic mechanisms is the same as the number of the guide rail magnet group (107). The pneumatic mechanism includes a double-axis double-rod cylinder and a guide magnet. The guide magnet is arranged on a piston member of the double-axis double-rod cylinder and faces an adjacent guide rail magnet group (107). The guide magnet and the adjacent guide rail magnet group (107) have the same pole facing each other, and the double-axis double-rod cylinder is connected to the pneumatic valve assembly.

[0012] In one embodiment, the permanent magnet group is formed by arranging a plurality of permanent magnets in a Halbach array.

[0013] In one embodiment, the angle formed by the extended lines of the two rows of permanent magnet groups is 30°-50°.

[0014] In one embodiment, in the same guide rail magnet group (107), the distance between two rows of permanent magnet groups is 15-20 cm.

[0015] In one embodiment, the number of the guide rail magnet groups is three, and they are evenly distributed on the circumferential side of the rotating cylinder along the axial direction of the rotating cylinder.

[0016] In one embodiment, taking the circular cross section projected onto the rotating cylinder as a reference, the first sections of the three guide rail magnet groups are distributed every 120° along the circumference of the circular cross section.

[0017] In one embodiment, the power generation assembly includes a gearbox and a generator, the gearbox is connected to the rotating shaft, and the generator is connected to the gearbox.

[0018] In one embodiment, the minimum distance between the guide magnet and the adjacent guide rail magnet group (107) is 0.5-1 cm.

[0019] In one embodiment, the pneumatic mechanism further includes a guide rod and a return spring, a bottom plate is provided on the bottom surface of the cylinder body of the double-axis double-rod cylinder, the return spring is provided between the piston member and the bottom plate, a guide block is provided on the side of the cylinder body of the double-axis double-rod cylinder protruding outward, the guide rod is located outside the cylinder body, the top end of the guide rod is connected to the piston member, the bottom end of the guide rod can slidably pass through the guide block, and the guide rod is located in the return spring.

[0020] A method for using a magnetic range-extending flywheel energy storage system includes an energy storage stage, a control stage, and an energy transfer stage, as follows:

[0021] Energy storage process: When the control component detects that there is sufficient power, it starts the air compressor. When the air pressure in the air storage tank of the air compressor reaches the set pressure value, the air compressor automatically stops working;

[0022] The control component Hall sensor component determines the position of the guide magnet group on the rotating cylinder, and controls multiple dual-axis dual-rod cylinders through the pneumatic valve group, thereby controlling the guide magnets of the six pneumatic mechanisms;

[0023] When the guide magnet is put into operation, the distance between the guide magnet and the guide rail magnet group embedded in the surface of the rotating cylinder gradually decreases under the push of the double-axis double-rod cylinder. Since the guide magnet and the adjacent guide rail magnet group have the same polarity, the guide magnet uses the repulsive force between the magnets to push the rotating cylinder to rotate.

[0024] The direction of rotation of the rotating cylinder is: based on a group of guide rail magnet groups, the rotation of the rotating cylinder makes the spacing between the permanent magnet groups in the guide rail magnet group gradually increase from the maximum to the minimum, the minimum spacing between the permanent magnet groups in the guide rail magnet group is the eight-shaped head of the guide rail magnet group, and the maximum spacing between the permanent magnet groups in the guide rail magnet group is the eight-shaped tail of the guide rail magnet group;

[0025] When the guide magnet is fully extended, the interval with the outer circle of the rotating cylinder is the smallest, and the distance is relatively fixed at this time. When the guide magnet group rotates to the relative guide magnet input position, the guide magnet retracts and returns to its original position, and the distance between the two is the largest; when the guide magnet group rotates to the relative guide magnet input position, the guide magnet is fully extended, and the distance between the two is the smallest. When the guide magnet is put into the guide magnet group, it is opposite to the figure tail of the permanent magnet group in the figure-eight guide magnet group, and the distance between the two is the smallest. As the rotating cylinder rotates, when the guide magnet is at the junction of the figure-eight head and the tail of the guide magnet group, the guide magnet retracts quickly, the distance decreases quickly, and the repulsive force between the two decreases. Finally, when the guide magnet is opposite to the figure-eight head of the permanent magnet group in the figure-eight guide magnet group, the distance between the two is the farthest.

[0026] During the rotation of the rotating cylinder, when the eight-shaped head of the guide rail magnet group gradually approaches the guide magnet, the guide magnet is controlled to move away from the rotating cylinder, and the distance between the guide magnet and the guide rail magnet group increases rapidly, so that the reaction thrust in the area where the guide magnet and the permanent magnet group in the guide rail magnet group have the smallest distance and the largest distance will be reduced to a minimum. Due to the inertia of the counterweight flywheel itself, the rotating cylinder will continue to rotate. When the control component detects that the guide magnet passes the connection between the head and tail of the permanent magnet group in the guide rail magnet group, the pneumatic mechanism is controlled to put the guide magnet in again, and the distance between the guide magnet and the guide rail magnet group gradually decreases, generating a repulsive force to push the rotating cylinder to rotate, and the cycle continues;

[0027] Control stage: During the operation of the magnetic range-extending flywheel energy storage system, the control component precisely controls the acceleration and deceleration of the rotating cylinder, controls the speed of the rotating cylinder, and maintains the stability and balance of the power grid;

[0028] Energy transfer stage: When the control system detects that the load end needs to release energy, it instructs the dual-axis dual-rod cylinder of the pneumatic mechanism to close and reset all the guide magnets. The rotating cylinder begins to decelerate. Due to the strong inertia formed by the high-speed rotation of the counterweight flywheel, a huge torque is output through the shaft into the input end of the gearbox, and then input into the generator to generate electricity. The mechanical energy of the counterweight flywheel is converted into electrical energy through the generator and output to the power grid.

[0029] In summary, the present invention has the following beneficial effects:

[0030] The present invention proposes a structure that utilizes the magnetic force of a permanent magnet in combination with a flywheel to achieve environmentally friendly, efficient and sustainable energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the pneumatic mechanism of the present invention;

[0033] Figure 3 2 is a schematic diagram of the permanent magnet group of the present invention from another angle, and the left side of the figure is a partial schematic diagram of the permanent magnet group of the present invention formed according to the Halbach array;

[0034] Figure 4 It is a schematic diagram of the overall structure of the present invention from a top view;

[0035] Figure 5 It is a schematic diagram of the angle formed by two rows of magnets of the guide rail magnet assembly of the present invention.

[0036] In the figure: 1. Magnetic range-extending flywheel energy storage system;

[0037] 101. Rotating cylinder, 102. Frame, 103. Pneumatic mechanism, 104. Hall sensor assembly, 105. Counterweight flywheel, 106. Bearing, 107. Guide rail magnet assembly, 108. Permanent magnet assembly, 109. Rotating shaft, 110. Generator, 111. Gearbox, 112. Control assembly, 113. Air compressor, 114. Double-axis double-rod cylinder, 115. Pneumatic valve assembly, 116. Guide magnet, 117. Guide rod, 118. Reset spring, 119. Anti-collision and shock-absorbing rubber pad, 120. Bottom plate, 121. Guide block. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] It is worth noting that the directional words such as "upper" and "lower" involved in this article are all relative to the viewing angle of the drawings and are only for the convenience of description and cannot be understood as limitations on the technical solution.

[0040] like Figure 1-5 The present invention proposes a magnetic range-extending flywheel energy storage system 1, comprising a frame 102 and a magnetic cylinder assembly, a pneumatically guided magnetic drive assembly, a power generation assembly, a Hall sensor assembly 104 and a control assembly 112 arranged on the frame 102, wherein the magnetic cylinder assembly is rotatably arranged on the frame 102 and connected to the power generation assembly, the pneumatically guided magnetic drive assembly is arranged outside the magnetic cylinder assembly and drives the magnetic cylinder assembly to rotate, the rotation of the magnetic cylinder assembly drives the power generation assembly to generate electricity and store energy, the Hall sensor assembly 104 detects the rotation position of the magnetic cylinder assembly, and the control assembly 112 is respectively connected to the electrical components in the magnetic cylinder assembly, the pneumatically guided magnetic drive assembly, the power generation assembly and the Hall sensor assembly 104 to realize the control function.

[0041] The technical solution of the present invention is described below through a specific structure.

[0042] like Figure 1 As shown, the magnetic cylinder assembly includes a rotating cylinder 101 , a rotating shaft 109 , a counterweight flywheel 105 and a guide rail magnet group 107 .

[0043] The rotating cylinder 101 is fixedly provided with a rotating shaft 109 along its own axis. The rotating shaft 109 penetrates the rotating cylinder 101 , and both ends of the rotating shaft 109 are rotatably connected to the frame 102 through bearings 106 , that is, the rotating cylinder 101 is rotatable in the frame 102 .

[0044] The rotating cylinder 101 is provided with a counterweight flywheel 105, and two counterweight flywheels 105 are respectively fixed at two ends of the rotating cylinder 101, and both counterweight flywheels 105 are coaxial with the rotating shaft 109. The function of the counterweight flywheel 105 is that when the rotating cylinder 101 rotates at a high speed and loses magnetic drive, the rotating cylinder 101 can still keep rotating based on the inertia of the counterweight flywheel 105.

[0045] The guide rail magnet group 107 is disposed on the outer side of the rotating cylinder 101, and the number of the guide rail magnet group 107 is greater than or equal to one group. Figure 1 The guide magnet group 107 shown includes two columns of permanent magnet groups 108, and the permanent magnet group 108 is formed by arranging a plurality of permanent magnets. Preferably, the permanent magnet group 108 is formed by arranging a plurality of permanent magnets using a Halbach array. The permanent magnet group 108 surrounds the circumferential side of the rotating cylinder 101 in the form of a spiral line. In the same guide magnet group 107, the straight line at the spiral starting point of the two columns of permanent magnet groups 108 is parallel to the axis of the rotating cylinder 101, and the spiral directions of the two columns of permanent magnet groups 108 are opposite, that is, when observed from the circumferential side of the rotating cylinder 101, the two columns of permanent magnet groups 108 form a track magnet arrangement similar to a figure eight. Preferably, the angle formed by the extended lines of the two columns of permanent magnet groups 108 is 30-50°, such as Figure 5 shown.

[0046] It is easy to understand that for the same column of permanent magnet groups 108 , after the permanent magnet group 108 circles the rotating cylinder 101 once, the permanent magnets at the head and tail are staggered.

[0047] Preferably, in the same guide rail magnet group 107, the distance between two rows of permanent magnet groups 108 is 15-20 cm, wherein the minimum distance between two rows of permanent magnet groups 108 is 15 cm, and the maximum distance between two rows of permanent magnet groups 108 is 20 cm.

[0048] Preferably, in the present invention, the number of the guide magnet groups 107 is three, and they are evenly distributed on the circumferential side of the rotating cylinder 101 along the axial direction of the rotating cylinder 101. More preferably, based on the circular cross section projected onto the rotating cylinder 101, the first sections of the three guide magnet groups 107 are distributed every 120° along the circumference of the circular cross section, that is, every time the rotating outer cylinder rotates 120°, the guide magnet groups 107 act to push the rotating cylinder 101 to rotate.

[0049] Preferably, the outer surface of the rotating cylinder 101 is flat and smooth to avoid generating large air resistance during rotation.

[0050] like Figure 1As shown. The power generation assembly includes a gearbox 111 and a generator 110, wherein the gearbox 111 is connected to the rotating shaft 109, and the generator 110 is connected to the gearbox 111. A variety of gears with different numbers of teeth are installed inside the gearbox 111. When the power of the rotating shaft 109 is transmitted to the gearbox 111, the gear ratio, i.e., the ratio of the speed of the input shaft to the speed of the output shaft, can be changed by selecting gears with different numbers of teeth for meshing. Thus, the gearbox 111 converts the low-speed and high-torque output of the rotating shaft 109 into a high-speed and high-torque output, driving the generator 110 to generate electricity.

[0051] like Figure 1 As shown. The Hall sensor assembly 104 is arranged on the frame 102 and is located outside one of the end faces of the rotating cylinder 101. The Hall sensor assembly 104 is an existing Hall sensor. Since a guide magnet group 107 is arranged at one end of the rotating cylinder 101 close to the Hall sensor assembly 104, the distance between the permanent magnet group 108 close to the Hall sensor assembly 104 in the guide magnet group 107 and the Hall sensor assembly 104 changes with the rotation of the rotating cylinder 101. The Hall sensor assembly 104 detects the distance change of the closest permanent magnet group 108, thereby judging the rotation position of the rotating cylinder 101.

[0052] It is easy to understand that the positions of the three guide magnet groups 107 on the rotating cylinder 101 are known and determined, and by detecting the position of the permanent magnet group 108 closest to the Hall sensor assembly 104, the positions of the three guide magnet groups 107 during the rotation of the rotating cylinder 101 can be obtained.

[0053] The detection of the rotation process of the rotating cylinder 101 by the Hall sensor assembly 104 is coordinated with the pneumatic guided magnetic force drive assembly, which is specifically described below in conjunction with the structure of the pneumatic guided magnetic force drive assembly.

[0054] like Figure 1 and 2 As shown. The pneumatic guide magnetic drive assembly is arranged on the frame 102, and two pneumatic guide magnetic drive assemblies are symmetrically arranged outside the circumferential side of the rotating cylinder 101, and the two pneumatic guide magnetic drive assemblies are controlled by a pneumatic valve group 115, and the pneumatic valve is connected to the air compressor 113. The pneumatic guide magnetic drive assembly includes a plurality of pneumatic mechanisms 103, and the number of the pneumatic mechanisms 103 is the same as the number of the guide rail magnet group 107. The pneumatic mechanism 103 includes a double-axis double-rod cylinder 114 and a guide magnet 116. The two guide magnets 116 are arranged on the piston of the double-axis double-rod cylinder 114 and face the adjacent guide rail magnet group 107. The guide magnet 116 faces the same pole as the adjacent guide rail magnet group 107, and the double-axis double-rod cylinder 114 is connected to the pneumatic valve group 115.

[0055] Taking three guide rail magnet groups 107 as an example, two pneumatic guide magnetic drive assemblies include six pneumatic mechanisms 103, which are respectively arranged outside the three guide rail magnet groups 107, and two pneumatic mechanisms 103 are symmetrically arranged outside each guide rail magnet group 107. The pneumatic valve group 115 controls the six pneumatic mechanisms 103 simultaneously.

[0056] It is easy to understand that when the guide magnet 116 of the pneumatic mechanism 103 is pushed out by the double-axis double-rod cylinder 114, the guide magnet 116 approaches the adjacent guide rail magnet group 107, and when the guide magnet 116 is retracted by the double-axis double-rod cylinder 114, the guide magnet 116 is away from the adjacent guide rail magnet group 107. Preferably, the minimum distance between the guide magnet 116 and the adjacent guide rail magnet group 107 is 0.5-1 cm to prevent the guide magnet 116 from colliding with the adjacent guide rail magnet group 107.

[0057] Preferably, the pneumatic mechanism 103 further includes a guide rod 117 and a return spring 118. A bottom plate 120 is provided on the bottom surface of the cylinder body of the double-axis double-rod cylinder 114. The return spring 118 is provided between the piston member and the bottom plate 120. A guide block 121 is provided on the side of the cylinder body of the double-axis double-rod cylinder 114 protruding outward. The guide rod 117 is located outside the cylinder body. The top end of the guide rod 117 is connected to the piston member. The bottom end of the guide rod 117 can slide through the guide block 121. The guide rod 117 is located in the return spring 118. When the guide magnet 116 is pushed out, the return spring 118 is in a stretched state. When the double-axis double-rod cylinder 114 loses power, the return spring 118 pulls the piston member back to achieve the retraction of the guide magnet 116.

[0058] Preferably, an anti-collision and shock-absorbing rubber pad 119 is also provided on one side of the cylinder body of the dual-axis dual-rod cylinder 114 facing the piston member.

[0059] Due to the elastic potential energy of the reset spring 118, the piston is pulled to discharge the air in the cylinder from the bottom air inlet and outlet through the exhaust hole of the pneumatic valve group. At the same time, a certain amount of air is sucked into the front air inlet and outlet of the cylinder, and the guide magnet 116 is reset backward. The pneumatic mechanism 103 adopts a single compressed air inlet, and the reset design of the reset spring 118 can save 50% of the compressed air supply in actual use, thereby achieving the effect of minimum energy consumption.

[0060] Based on the above-mentioned magnetic range-extending flywheel energy storage system 1, the present invention also proposes a method for using the magnetic range-extending flywheel energy storage system 1, including an energy storage stage, a control stage and an energy transfer stage, as follows:

[0061] Energy storage process: When the control component 112 detects that there is sufficient power, the air compressor 113 is started. When the air pressure in the air storage tank of the air compressor 113 reaches the set pressure value, the air compressor 113 automatically stops working.

[0062] The control component 112 determines the position of the guide magnet group 107 on the rotating cylinder 101 according to the signal transmitted by the Hall sensor component 104 on the frame 102, and controls multiple dual-axis dual-rod cylinders 114 through the pneumatic valve group 115, thereby controlling the guide magnets 116 of the six pneumatic mechanisms 103.

[0063] When the guide magnet 116 is put in, under the push of the double-axis double-rod cylinder 114, the distance between the guide magnet 116 and the guide rail magnet group 107 embedded in the surface of the rotating cylinder 101 becomes smaller. Since the guide magnet 116 and the adjacent guide rail magnet group 107 have the same polarity, according to the principle that like poles of magnets repel each other, the guide magnet 116 uses the repulsive force between the magnets to push the rotating cylinder 101 to rotate. Since the guide rail magnet group 107 is arranged in an eight-shaped shape on the surface of the rotating cylinder 101, and the guide magnet 116 performs a reciprocating telescopic motion along the radial direction of the rotating cylinder 101, when the guide permanent magnet completes its extension, it is closest to the eight-shaped tail of the guide rail magnet group 107. As the rotating cylinder 101 rotates, the guide magnet 116 is at the junction of the guide rail magnet group 107, and the guide magnet 116 quickly retracts, and the distance from the guide rail magnet group 107 quickly increases, and the repulsive force between the two quickly decreases. Finally, when the guide magnet 116 and the guide rail magnet group 107 are opposite to each other, the distance between the two is the farthest.

[0064] Since the guide magnet group 107 is distributed in a spiral shape along the rotating cylinder 101, as the outer cylinder of the flywheel rotates, the guide magnet group 107 in a spiral shape will repeat the spiral rotation. If the guide magnet 116 remains in an extended state, the guide magnet 116 and the permanent magnet group 108 are closer due to the rotation of the rotating cylinder 101. When the guide magnet 116 approaches the area where the guide magnet group 107 and the tail are connected, the reverse force that hinders the rotation of the rotating cylinder 101 will be greater, until the guide magnet 116 passes over the guide magnet group 107. After that, the repulsive force of the guide magnet 116 on the guide magnet group 107 will be converted back into a positive driving force on the rotating cylinder 101, and the cycle repeats.

[0065] Therefore, during the rotation of the rotating cylinder 101, when the distance between the permanent magnet of the inner splayed head of the guide rail magnet group 107 and the guide magnet 116 in the invested state is getting closer and closer, the control component 112 judges the motion trajectory of the guide rail magnet group 107 on the rotating cylinder 101 according to the feedback information of the Hall sensor component 104 installed on the frame 102, and closes the pneumatic valve group 115 corresponding to the pneumatic mechanism 103 in advance. The reset spring 118, due to the lack of cylinder thrust support and the dual action of the repulsive force of the guide rail magnet group 107, quickly accelerates the guide magnet 116 away from the rotating cylinder 101. The distance between the guide magnet 116 and the guide rail magnet group 107 will also increase rapidly, and the interaction force between the magnets will gradually decrease as the distance between the magnets gradually increases. Therefore, the reaction thrust of the permanent magnets in the connection area between the guide magnet 116 and the guide rail magnet group 107 will be minimized, and the rotating cylinder 101 will continue to rotate due to the inertia of the counterweight flywheel 105. When the control component 112 detects that the guide magnet 116 passes over the permanent magnets of the guide rail magnet group 107, the pneumatic mechanism 103 is controlled to gradually insert the guide magnet 116, and the guide magnet 116 uses the repulsive force between the guide rail magnet group 107 to push the rotating cylinder 101 to rotate, and the cycle continues.

[0066] The kinetic energy of the counterweight flywheel 105 during rotation is: E=1 / 2*J*ω^2, where: J is the rotational inertia of the flywheel, and ω is the angular velocity of the counterweight flywheel 105 rotation.

[0067] The kinetic energy E of the counterweight flywheel 105 when rotating is proportional to the moment of inertia J of the flywheel. The moment of inertia J of the counterweight flywheel 105 is proportional to the diameter of the counterweight flywheel 105 and the mass of the flywheel. In order to obtain a larger moment of inertia J, a counterweight flywheel 105 with a large diameter and a large mass should be adopted. When the huge and heavy counterweight flywheel 105 rotates at a high speed, it will produce a huge centrifugal force. If it exceeds the ultimate strength of the counterweight flywheel 105 material, it will be extremely unsafe. Therefore, it is limited to increase the kinetic energy of the counterweight flywheel 105 by increasing the moment of inertia of the counterweight flywheel 105. The present invention is designed to increase the diameter of the counterweight flywheel 105, and when the volume and the distance between the guide magnet 116 and the guide rail magnet group 107 remain unchanged, the mutual repulsive force between the guide magnet 116 and the guide rail magnet group 107 installed on the surface of the rotating cylinder 101 is the same. However, as the diameter of the counterweight flywheel 105 increases, the torque of the repulsive force between the guide magnet 116 of the rotating cylinder 101 and the guide rail magnet group 107 will also gradually increase. According to the principle of the lever: the two torques acting on the lever, i.e., the product of the force and the lever arm, must be equal. That is: power × power arm = resistance × resistance arm, expressed in algebraic form as F1·l 1 = F2·l2. It can be seen from the above formula that in order to balance the lever, the force between the power, i.e., the guide magnet 116 and the guide rail magnet group 107, remains unchanged. When the power arm, i.e., the torque, increases with the radius of the counterweight flywheel 105, the resistance arm, i.e., the main shaft radius, is several times greater than the resistance arm, i.e., the main shaft radius, and the resistance output is several times greater than the power. Therefore, when the air compressor 113 consumes the same energy to drive the rotating cylinder 101 to rotate, the main shaft power output torque, the power will be multiplied as the diameter of the counterweight flywheel 105 increases, to achieve the energy storage purpose of improving the mechanical work efficiency.

[0068] Preferably, the maximum speed of the counterweight flywheel 105 is less than or equal to 500 rpm. When the control component 112 detects that the speed of the rotating cylinder 101 exceeds the upper limit, it will actively intervene, turn off the input of the guide magnet 116, reduce the speed of the rotating cylinder 101 to maintain its safe operation.

[0069] Control stage: During the operation of the magnetic range-extending flywheel energy storage system 1, the control component 112 precisely controls the acceleration and deceleration of the rotating cylinder 101. According to the data fed back by the Hall sensor component 104 installed on the frame 102 when the rotating cylinder 101 is in operation, the pneumatic valve group 115 is controlled to control the switching of multiple groups of guide magnets 116. The control component 112 monitors the difference between the load and power supply of the power grid, thereby controlling the speed of the rotating cylinder 101 and maintaining the stability and balance of the power grid.

[0070] Energy transfer stage: When the control system detects that the load end needs to release energy, it instructs the double-shaft double-rod cylinder 114 of the pneumatic mechanism 103 to close so that all the guide magnets 116 are reset, and the rotating cylinder 101 begins to decelerate. Due to the strong inertia formed by the high-speed rotation of the counterweight flywheel 105, a huge torque is output through the rotating shaft 109 and enters the input end of the gearbox 111, and then input into the generator 110 to achieve power generation, and the mechanical energy of the counterweight flywheel 105 is converted into electrical energy through the generator 110 and output to the power grid. The gearbox 111 is equipped with a variety of gears with different numbers of teeth. When the power of the main shaft is transmitted to the gearbox 111, the transmission ratio, that is, the ratio of the speed of the input shaft to the output shaft, can be changed by selecting gears with different numbers of teeth for meshing. In this way, the gearbox 111 can convert the low-speed and high-torque output of the flywheel main shaft into high-speed and high-torque output, and convert the stored mechanical energy into electrical energy.

[0071] In the present invention, the control component 112 is an existing conventional control system, which is connected to at least various related electrical devices of the present invention, such as the air compressor 113, the Hall sensor component 104, the pneumatic valve group 115, etc.

[0072] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A magnetic range-extending flywheel energy storage system, characterized in that: The invention comprises a frame (102), a magnetic cylinder assembly, a pneumatically guided magnetic drive assembly, a power generation assembly, a Hall sensor assembly (104) and a control assembly (112) arranged on the frame (102), wherein the control assembly (112) is respectively connected to the magnetic cylinder assembly, the pneumatically guided magnetic drive assembly, the power generation assembly and the Hall sensor assembly (104); The magnetic cylinder assembly comprises a rotating cylinder (101), a rotating shaft (109), a counterweight flywheel (105) and a guide rail magnet group (107). The rotating cylinder (101) is fixedly provided with a rotating shaft (109) along its own axis. The rotating shaft (109) passes through the rotating cylinder (101), and both ends of the rotating shaft (109) are rotatably connected to the frame (102) through bearings (106). The counterweight flywheel (105) is provided in the rotating cylinder (101). 05), two counterweight flywheels (105) are respectively fixed at two ends of the rotating cylinder (101), and the two counterweight flywheels (105) are coaxial with the rotating shaft (109), the guide rail magnet group (107) is arranged on the outer side of the rotating cylinder (101), the number of the guide rail magnet group (107) is greater than or equal to one group, and the guide rail magnet group (107) includes two rows of permanent magnet groups (108), and the permanent magnet group (108) is formed by arranging a plurality of permanent magnets; The Hall sensor assembly (104) is arranged on the frame (102) and is located outside one end surface of the rotating cylinder (101); The power generation assembly is arranged on the frame (102) and connected to the rotating shaft (109); The pneumatic guide magnetic drive assembly is arranged on a frame (102), and two pneumatic guide magnetic drive assemblies are symmetrically arranged outside the circumferential side of the rotating cylinder (101), and the two pneumatic guide magnetic drive assemblies are controlled by a pneumatic valve group (115), and the pneumatic valve is connected to an air compressor (113). The pneumatic guide magnetic drive assembly includes a plurality of pneumatic mechanisms (103), and the number of the pneumatic mechanisms (103) is the same as the number of the guide rail magnet group (107). The pneumatic mechanisms (103) include The invention comprises a double-axis double-rod cylinder (114) and a guide magnet (116), wherein the two guide magnets (116) are both arranged on the piston of the double-axis double-rod cylinder (114) and face the adjacent guide rail magnet group (107), the two guide magnets (116) respectively correspond to two rows of permanent magnet groups (108) in the guide rail magnet group (107), the guide magnets (116) and the adjacent permanent magnet groups (108) have the same poles facing each other, and the double-axis double-rod cylinder (114) is connected to the pneumatic valve group (115).

2. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: The permanent magnet group (108) is composed of a plurality of permanent magnets arranged in a Halbach array.

3. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: The included angle formed by the extended lines of the two rows of permanent magnets (108) is 30-50°.

4. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: In the same guide rail magnet group (107), the distance between two rows of permanent magnet groups (108) is 15-20 cm.

5. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: The number of the guide rail magnet groups (107) is three, and they are evenly distributed on the circumferential side surface of the rotating cylinder (101) along the axial direction of the rotating cylinder (101).

6. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: Taking the circular cross section projected onto the rotating cylinder (101) as a reference, the first sections of the three guide rail magnet groups (107) are distributed every 120 degrees along the circumference of the circular cross section.

7. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: The power generation assembly comprises a gearbox (111) and a generator (110); the gearbox (111) is connected to the rotating shaft (109); and the generator (110) is connected to the gearbox (111).

8. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: The minimum distance between the guide magnet (116) and the adjacent guide rail magnet group (107) is 0.5-1 cm.

9. The magnetic range-extending flywheel energy storage system according to claim 1, characterized in that: The pneumatic mechanism (103) further comprises a guide rod (117) and a return spring (118); a bottom plate (120) is arranged on the bottom surface of the cylinder body of the double-axis double-rod cylinder (114); the return spring (118) is arranged between the piston member and the bottom plate (120); a guide block (121) is arranged on the side surface of the cylinder body of the double-axis double-rod cylinder (114) protruding outward; the guide rod (117) is located outside the cylinder body; the top end of the guide rod (117) is connected to the piston member; the bottom end of the guide rod (117) can slidably pass through the guide block (121); and the guide rod (117) is located inside the return spring (118).

10. A method for using the magnetic range-extending flywheel energy storage system according to any one of claims 1 to 9, characterized in that: It includes energy storage stage, control stage and energy transfer stage, as follows: Energy storage process: when the control component (112) detects that the power is sufficient, the air compressor (113) is started, and when the air pressure of the air storage tank of the air compressor (113) reaches the set pressure value, the air compressor (113) automatically stops working; The control component (112) and the Hall sensor component (104) determine the position of the guide magnet group (107) on the rotating cylinder (101), and control the multiple double-axis double-rod cylinders (114) through the pneumatic valve group (115), thereby controlling the guide magnets (116) of the six pneumatic mechanisms (103); When the guide magnet (116) is put into operation, the distance between the guide magnet (116) and the guide rail magnet group (107) embedded in the surface of the rotating cylinder (101) gradually decreases under the push of the double-shaft double-rod cylinder (114). Since the guide magnet (116) and the adjacent guide rail magnet group (107) have the same polarity, the guide magnet (116) uses the repulsive force between the magnets to push the rotating cylinder (101) to rotate. The rotating cylinder (101) rotates in a direction such that, with a group of guide rail magnet groups (107) as a reference, the rotation of the rotating cylinder (101) causes the spacing between the permanent magnet groups (108) in the guide rail magnet group (107) to gradually increase from a maximum to a minimum, the minimum spacing between the permanent magnet groups (108) in the guide rail magnet group (107) is the leading edge of the guide rail magnet group (107), and the maximum spacing between the permanent magnet groups (108) in the guide rail magnet group (107) is the trailing edge of the guide rail magnet group (107); When the guide magnet (116) is fully extended, the interval between it and the outer circle of the rotating cylinder (101) is the smallest, and at this time the distance is relatively fixed. When the guide rail magnet group (107) rotates to a position corresponding to the insertion position of the guide magnet (116), the guide magnet (116) retracts and returns to its original position, and the distance between the two is the largest. When the guide rail magnet group (107) rotates to a position corresponding to the insertion position of the guide magnet (116), the guide magnet (116) is fully extended, and the distance between the two is the smallest. When the guide magnet (107) rotates to a position corresponding to the insertion position of the guide magnet (116), the guide magnet (116) is fully extended, and the distance between the two is the smallest. When the guide magnet (116) is inserted and faces the tail of the permanent magnet group (108) in the guide rail magnet group (107) in the shape of an eight, the distance between the two is the smallest. As the rotating cylinder (101) rotates, when the guide magnet (116) is inserted and contacts the head and tail of the guide rail magnet group (107), the guide magnet (116) is quickly retracted, and the repulsive force between the two is quickly reduced. Finally, when the guide magnet (116) faces the head of the permanent magnet group (108) in the guide rail magnet group (107) in the shape of an eight, the distance between the two is the farthest. During the rotation of the rotating cylinder (101), when the splayed head of the guide rail magnet group (107) gradually approaches the guide magnet (116), the guide magnet (116) is controlled to move away from the rotating cylinder (101), and the distance between the guide magnet (116) and the guide rail magnet group (107) increases rapidly, so that the reaction thrust in the area where the guide magnet (116) and the permanent magnet group (108) in the guide rail magnet group (107) are connected at the minimum distance and the maximum distance is reduced to the minimum. Due to the inertia of the flywheel (105), the rotating cylinder (101) will continue to rotate. When the control component (112) detects that the guide magnet (116) passes the end-to-end connection of the permanent magnet group (108) in the guide rail magnet group (107), the pneumatic mechanism (103) is controlled to re-insert the guide magnet (116). The distance between the guide magnet (116) and the guide rail magnet group (107) gradually decreases, generating a repulsive force to push the rotating cylinder (101) to rotate, and the cycle continues. Control stage: during the operation of the magnetic range-extending flywheel energy storage system (1), the control component (112) accurately controls the acceleration and deceleration of the rotating cylinder (101), controls the rotation speed of the rotating cylinder (101), and maintains the stability and balance of the power grid; Energy transfer stage: When the control system detects that the load end needs to release energy, it instructs the double-shaft double-rod cylinder (114) of the pneumatic mechanism (103) to close so that all the guide magnets (116) are reset, and the rotating cylinder (101) begins to decelerate. Due to the strong inertia formed by the high-speed rotation of the counterweight flywheel (105), a huge torque is output through the rotating shaft (109) and enters the input end of the gearbox (111), and then input into the generator (110) to generate electricity, and the mechanical energy of the counterweight flywheel (105) is converted into electrical energy through the generator (110) and output to the power grid.

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