A magnetic force range - extended flywheel energy storage system and its usage method

Abstract

The present invention relates to a magnetic force range - extended flywheel energy storage system and a usage method. The magnetic force range - extended flywheel energy storage system includes a frame and a magnetic cylinder assembly, a pneumatic guiding magnetic force driving assembly, a power generation assembly, a Hall sensor assembly, and a control assembly arranged on the frame. Among them, the magnetic cylinder assembly is rotatably arranged on the frame and is connected to the power generation assembly. The pneumatic guiding 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 electricity and store energy. The Hall sensor assembly detects the rotation position of the magnetic cylinder assembly. The control assembly is respectively connected to the electrical components in the magnetic cylinder assembly, the pneumatic guiding magnetic force driving assembly, the power generation assembly, and the Hall sensor assembly to achieve control functions. The present invention combines the magnetic force of permanent magnets with a flywheel to achieve environmentally friendly, efficient, and sustainable energy storage.

Description

Technical Field

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

[0002] Now, with the rapid development of electrochemical energy storage, a fusion development trend of new energy plus energy storage has initially taken shape. However, limited by water resources, the development of pumped-storage energy storage is relatively stable, and solar thermal energy storage is still in its infancy. Flywheel energy storage is gradually entering the introduction period of commercial and large-scale applications.

[0003] As a manufacturing-type energy, 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 effects, and promote the innovation and transformation of the energy industry towards safety, greenness, and high efficiency.

[0004] Currently, flywheel energy storage in China is in the extensive experimental stage. Small prototypes have been successfully developed, and there are already multiple demonstration projects. The technical threshold of the flywheel energy storage system is relatively high, and there are still some problems to be solved in composite material structure technology, magnetic bearing technology, and high-speed and efficient motor technology in a vacuum. High speed, composite material rotor, and inner-fixed and outer-rotating structure are the future development directions. Chinese enterprises have basically mastered the alloy flywheel technology, but there is an obvious gap compared with foreign countries in terms of structural design, composite material rotor flywheels, etc. The purpose of the present invention is to propose a feasible flywheel energy storage system. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a magnetic force extended-range flywheel energy storage system and a usage method thereof, and propose a structure that combines the magnetic force of permanent magnets with a flywheel to achieve environmentally friendly, efficient, and sustainable energy storage.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions:

[0007] A magnetic force extended-range flywheel energy storage system includes a frame and a magnetic cylinder assembly, a pneumatic guiding magnetic force driving assembly, a power generation assembly, a Hall sensor assembly, and a control assembly disposed on the frame. The control assembly is respectively connected to the magnetic cylinder assembly, the pneumatic guiding magnetic force driving assembly, the power generation assembly, and the Hall sensor assembly;

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

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

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

[0011] The pneumatic guiding magnetic force driving assembly is arranged on the machine frame. Two pneumatic guiding magnetic force driving assemblies are symmetrically arranged outside the circumferential side of the rotating cylinder respectively. The two pneumatic guiding magnetic force driving assemblies are controlled by a pneumatic valve group. The pneumatic valve is connected to an air compressor. The pneumatic guiding magnetic force driving assembly includes a plurality of pneumatic mechanisms. The number of the pneumatic mechanisms is the same as that of the guide rail magnet group (107). The pneumatic mechanism includes a double-axis double-rod cylinder and a guiding magnet. The guiding magnet is arranged on the piston part of the double-axis double-rod cylinder and faces the adjacent guide rail magnet group (107). The guiding magnet faces the same pole as the adjacent guide rail magnet group (107). The double-axis double-rod cylinder is connected to the pneumatic valve assembly.

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

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

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

[0015] In one embodiment, the number of the guide rail magnet groups is three groups, which 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 segments of the three guide rail magnet groups are distributed at intervals of 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 guiding 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 block of the double - axis double - rod cylinder. The return spring is arranged between the piston part and the bottom plate. A guide block is protruded outward from the side surface of the cylinder block of the double - axis double - rod cylinder. The guide rod is outside the cylinder block. The top end of the guide rod is connected to the piston part, and the bottom end of the guide rod slidably passes through the guide block. The guide rod is inside the return spring.

[0020] A method for using a magnetic - force - extended flywheel energy storage system, including an energy storage stage, a control stage, and an energy transfer stage, is as follows:

[0021] Energy storage process: When the control component detects a condition of abundant power, it starts the air compressor. After 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 Hall sensor component of the control component judges the position of the guide rail magnet group on the rotating cylinder, and controls a plurality of double - axis double - rod cylinders through the pneumatic valve group, so as to control the guiding magnets of the six pneumatic mechanisms;

[0023] During the process of the guiding magnet being inserted, under the push of the double - axis double - rod cylinder, the distance between the guiding magnet and the guide rail magnet group embedded on the surface layer of the rotating cylinder gradually becomes smaller. Since the polarities of the guiding magnet and the adjacent guide rail magnet group are the same, the guiding magnet uses the repulsive force between the magnets to push the rotating cylinder to rotate;

[0024] The rotation direction of the rotating cylinder is: taking a group of guide rail magnet groups as a reference, the rotation of the rotating cylinder makes the distance between the permanent magnet groups in the guide rail magnet group gradually increase from the maximum to the minimum. The position where the distance between the permanent magnet groups in the guide rail magnet group is the smallest is the eight - character head of the guide rail magnet group, and the position where the distance between the permanent magnet groups in the guide rail magnet group is the largest is the eight - character tail of the guide rail magnet group;

[0025] When the guiding magnet is fully extended, the interval between it and the outer circle of the rotating cylinder is the smallest, and at this time the distance is also relatively fixed. When the eight - character head of the guide rail magnet group rotates to the relative guiding magnet insertion position, the guiding magnet retracts to the reset position, and the distance between the two is the largest; when the eight - character tail of the guide rail magnet group rotates to the relative guiding magnet insertion position, the guiding magnet is fully extended, and the distance between the two is the smallest. When the guiding magnet is inserted and is opposite to the eight - character tail of the permanent magnet group in the eight - character - shaped guide rail magnet group, the distance between the two is the smallest. As the rotating cylinder rotates, when the guiding magnet is at the connection of the eight - character head and tail of the guide rail magnet group, the guiding magnet quickly retracts, the distance quickly decreases, the repulsive force between the two decreases, and finally when the guiding magnet is opposite to the eight - character head of the permanent magnet group in the eight - character - shaped guide rail 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 guiding magnet, the guiding magnet is controlled to move away from the rotating cylinder. The distance between the guiding magnet and the guide rail magnet group increases rapidly, and the reaction thrust in the area where the minimum distance and the maximum distance between the permanent magnet groups in the guiding magnet and the guide rail magnet group are connected will be minimized. Due to the inertia of the counterweight flywheel itself, the rotating cylinder will continue to rotate. When the control component detects that the guiding magnet has crossed 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 guiding magnet in again. The distance between the guiding magnet and the guide rail magnet group gradually decreases, generating a repulsive force to push the rotating cylinder to rotate, and this process repeats continuously;

[0027] Control stage: During the operation of the magnetic force extended-range flywheel energy storage system, the control component precisely controls the acceleration and deceleration of the rotating cylinder, controls the rotational 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, the double-axis double-rod cylinder of the pneumatic mechanism is instructed to close to reset all the guiding magnets. The rotating cylinder starts to decelerate. Due to the strong inertia formed by the high-speed rotation of the counterweight flywheel, a huge torque is output through the rotating shaft to the input end of the gearbox, and then input to 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 combines the magnetic force of permanent magnets with a flywheel to achieve environmentally friendly, efficient, and sustainable energy storage. Brief description of the drawings

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

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

[0033] Figure 3 is the schematic diagram of another angle of the permanent magnet group of the present invention. The left side in 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 is the overall top view structural schematic diagram of the present invention;

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

[0036] In the figure: 1. Magnetic force extended-range 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 group, 108, Permanent magnet group, 109, Rotating shaft, 110, Generator, 111, Gearbox, 112, Control component, 113, Air compressor, 114, Double-axis double-rod cylinder, 115, Pneumatic valve group, 116, Guide magnet, 117, Guide rod, 118, Return spring, 119, Anti-collision and shock-absorbing rubber pad, 120, Bottom plate, 121, Guide block. Detailed implementation mode

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

[0039] It should be noted that the orientation words such as "up" and "down" involved in this article are determined relative to the perspective of the accompanying drawings, and are only for the convenience of description and cannot be understood as a limitation to the technical solution.

[0040] As Figures 1-5 shown. The present invention provides a magnetic force range-extended flywheel energy storage system 1, including a frame 102 and a magnetic cylinder assembly, a pneumatic guide magnetic drive assembly, a power generation assembly, a Hall sensor assembly 104 and a control assembly 112 arranged on the frame 102. Among them, the magnetic cylinder assembly is rotatably arranged on the frame 102 and is connected to the power generation assembly. The pneumatic guide 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 pneumatic guide magnetic drive assembly, the power generation assembly, and the Hall sensor assembly 104 to achieve the control function.

[0041] The technical solution of the present invention will be described below through specific structures.

[0042] As Figure 1 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 through the rotating cylinder 101, and both ends of the rotating shaft 109 are rotatably connected to the frame 102 through bearings 106 respectively. That is, the rotating cylinder 101 is rotatable within the frame 102.

[0044] A counterweight flywheel 105 is arranged inside the rotating cylinder body 101. The two counterweight flywheels 105 are respectively fixed at both ends inside the rotating cylinder body 101, and the two counterweight flywheels 105 are both coaxial with the rotating shaft 109. The function of the counterweight flywheel 105 is that when the rotating cylinder body 101 rotates at a high speed and loses magnetic drive, based on the inertial effect of the counterweight flywheel 105, the rotating cylinder body 101 can still maintain rotation.

[0045] The guide rail magnet group 107 is arranged on the outer side surface of the rotating cylinder body 101, and the number of the guide rail magnet groups 107 is greater than or equal to one group. As Figure 1 shown, the guide rail magnet group 107 includes two columns of permanent magnet groups 108. The permanent magnet group 108 is formed by arranging a plurality of permanent magnets. Preferably, the permanent magnet group 108 is arranged by using a Halbach array with a plurality of permanent magnets. The permanent magnet group 108 winds around the circumferential side surface of the rotating cylinder body 101 in a spiral form for one week. In the same guide rail magnet group 107, the straight line where the spiral starting points of the two columns of permanent magnet groups 108 are located is parallel to the axis of the rotating cylinder body 101, and the spiral directions of the two columns of permanent magnet groups 108 are opposite, that is, from the circumferential side surface of the rotating cylinder body 101, the two columns of permanent magnet groups 108 form an arrangement form of track magnets similar to an eight-shaped shape. Preferably, the included angle formed by the extension lines of the two columns of permanent magnet groups 108 is 30-50°, as Figure 5 shown.

[0046] It is easy to understand that for the same column of permanent magnet group 108, after the permanent magnet group 108 winds around the rotating cylinder body 101 for one week, the permanent magnets at the head and tail are staggered.

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

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

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

[0050] As Figure 1As shown in the figure. The power generation assembly includes 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. 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, by selecting different gears with different numbers of teeth to mesh, the transmission ratio can be changed, that is, the speed ratio of the input shaft to the output shaft. 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] As Figure 1 shown in the figure. The Hall sensor assembly 104 is arranged on the frame 102 and is located outside one end face 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 in the guide magnet group 107 close to the Hall sensor assembly 104 and the Hall sensor assembly 104 changes as the rotating cylinder 101 rotates. 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. 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 guiding magnetic drive assembly. The following will specifically describe in combination with the structure of the pneumatic guiding magnetic drive assembly.

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

[0055] Taking three guide rail magnet groups 107 as an example, the two pneumatic guiding magnetic force driving components altogether include six pneumatic mechanisms 103. The six pneumatic mechanisms 103 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 guiding magnet 116 of the pneumatic mechanism 103 is pushed out by the double-shaft double-rod cylinder 114, the guiding magnet 116 approaches the adjacent guide rail magnet group 107. When the guiding magnet 116 is retracted by the double-shaft double-rod cylinder 114, the guiding magnet 116 moves away from the adjacent guide rail magnet group 107. Preferably, the minimum distance between the guiding magnet 116 and the adjacent guide rail magnet group 107 is 0.5 - 1 cm to prevent the guiding 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 arranged on the bottom surface of the cylinder block of the double-shaft double-rod cylinder 114. The return spring 118 is arranged between the piston part and the bottom plate 120. A guide block 121 protrudes outward from the side surface of the cylinder block of the double-shaft double-rod cylinder 114. The guide rod 117 is located outside the cylinder block. The top end of the guide rod 117 is connected to the piston part. The bottom end of the guide rod 117 slidably passes through the guide block 121. The guide rod 117 is located inside the return spring 118. When the guiding magnet 116 is pushed out, the return spring 118 is in a stretched state. When the double-shaft double-rod cylinder 114 loses power, the return spring 118 pulls the piston part back to realize the retraction of the guiding magnet 116.

[0058] Preferably, an anti-collision and shock-absorbing rubber pad 119 is further arranged on the side of the cylinder block of the double-shaft double-rod cylinder 114 facing the piston part.

[0059] Due to the work done by the elastic potential energy of the return spring 118, the piston part is pulled to discharge the air existing inside the cylinder block 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 inhaled from the front air inlet and outlet of the cylinder block, and the guiding magnet 116 makes a reset movement backward. The pneumatic mechanism 103 adopts a single compressed air inlet and is combined with the reset design of the return spring 118, which can save 50% of the compressed gas supply in actual use, thus achieving the effect of minimum energy consumption.

[0060] Based on the above magnetic force extended-range flywheel energy storage system 1, the present invention further provides a usage method of the magnetic force extended-range 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 a condition of abundant power, it starts the air compressor 113. After 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 rail 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 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.

[0063] When the guide magnet 116 is inserted, 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 layer of the rotating cylinder 101 becomes smaller. Since the polarities of the guide magnet 116 and the adjacent guide rail magnet group 107 are the same, according to the principle of repulsion between like poles of magnets, 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 a figure-eight shape on the surface of the rotating cylinder 101, and the guide magnet 116 makes a reciprocating telescopic motion along the radial direction of the rotating cylinder 101, when the guide permanent magnet finishes extending, it is closest to the figure-eight tail of the figure-eight-shaped guide rail magnet group 107. As the rotating cylinder 101 rotates, the guide magnet 116 is at the connection of the head and tail of the figure-eight of the guide rail magnet group 107, and the guide magnet 116 quickly retracts, the distance from the guide rail magnet group 107 increases rapidly, the repulsive force between the two decreases rapidly, and finally when the guide magnet 116 is opposite to the figure-eight head of the figure-eight-shaped guide rail magnet group 107, the distance between the two is the farthest.

[0064] Since the guide rail magnet group 107 is distributed in a spiral figure-eight along the rotating cylinder 101, as the outer cylinder of the flywheel rotates, the figure-eight-shaped guide rail magnet group 107 will repeat the rotational spiral motion. If the guide magnet 116 remains in the extended state, due to the rotation of the rotating cylinder 101, the distance between the guide magnet 116 and the permanent magnet group 108 is relatively close. When the guide magnet 116 approaches the area at the connection of the head and tail of the figure-eight of the guide rail magnet group 107, the greater the reverse force that hinders the rotation of the rotating cylinder 101 will be. Until the guide magnet 116 crosses the figure-eight head of the guide rail magnet group 107, the repulsive force of the guide magnet 116 on the guide rail magnet group 107 will be re-converted into a positive driving force for the rotating cylinder 101, and so on, continuously cycling.

[0065] Therefore, during the rotation of the rotating cylinder 101, when the distance between the permanent magnet of the inner eight-head of the guide rail magnet group 107 and the guiding magnet 116 in the inserted state gets closer and closer, the control component 112 judges the movement track 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 corresponding pneumatic valve group 115 of the pneumatic mechanism 103 in advance. Without the dual action of the cylinder thrust support and the repulsive force of the guide rail magnet group 107, the return spring 118 quickly makes the guiding magnet 116 move in a straight line and accelerate away from the rotating cylinder 101. The distance between the guiding magnet 116 and the guide rail magnet group 107 will also increase rapidly. Since the distance between the magnets gradually increases, the mutual acting force between the two will gradually decrease. Therefore, the reaction thrust of the permanent magnet in the connection area between the guiding magnet 116 and the inner eight-head tail of the guide rail magnet group 107 will be reduced to the minimum. Due to the inertia of the counterweight flywheel 105 itself, the rotating cylinder 101 will continue to rotate. When the control component 112 detects that the guiding magnet 116 has passed over the permanent magnet of the inner eight-head of the guide rail magnet group 107, it controls the pneumatic mechanism 103 to gradually insert the guiding magnet 116. The guiding magnet 116 uses the repulsive force between it and the guide rail magnet group 107 to push the rotating cylinder 101 to rotate, and this process repeats continuously.

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

[0067] When the counterweight flywheel 105 rotates, the kinetic energy E is proportional to the moment of inertia J of the flywheel. The moment of inertia J of the counterweight flywheel 105 is in turn proportional to the diameter of the counterweight flywheel 105 and the mass of the flywheel. To obtain a larger moment of inertia J, a counterweight flywheel 105 with a large diameter and a large mass is to be used. When the huge and heavy counterweight flywheel 105 rotates at high speed, it will generate a great centrifugal force. If it exceeds the ultimate strength of the material of the counterweight flywheel 105, 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. In the design of the present invention, when the diameter of the counterweight flywheel 105 is increased and the volume and the acting separation distance of the guiding magnet 116 and the guide magnet group 107 remain unchanged, the magnitude of the mutual repulsive force between the guiding magnet 116 and the guide magnet group 107 installed on the surface layer of the rotating cylinder 101 is the same. However, as the diameter of the counterweight flywheel 105 increases, the moment of the repulsive force acting between the guiding magnet 116 of the rotating cylinder 101 and the guide magnet group 107 will gradually increase. According to the lever principle: the magnitudes of the two moments acting on the lever, that is, the product of the force and the force arm, must be equal. That is: driving force × driving force arm = resistance force × resistance force arm, which is expressed algebraically as F1·l 1 = F2·l2. It can be seen from the above formula that to make the lever reach equilibrium, the driving force, that is, the acting force between the guiding magnet 116 and the guide magnet group 107 remains unchanged. When the driving force arm, that is, the moment, increases with the increase of the radius of the counterweight flywheel 105, compared with how many times the resistance force arm, that is, the radius of the main shaft, is, the resistance output is several times the driving force. Therefore, when the air compressor 113 consumes the same energy to drive the rotation of the rotating cylinder 101, the torque and power output of the main shaft will be amplified by several times as the diameter of the counterweight flywheel 105 increases, achieving the energy storage purpose of improving the mechanical work efficiency.

[0068] Preferably, the maximum rotational speed of the counterweight flywheel 105 is less than or equal to 500 rpm. When the control component 112 detects that the rotational speed of the rotating cylinder 101 exceeds the upper limit, it will actively intervene, turn off the input of the guiding magnet 116, and reduce the rotational speed of the rotating cylinder 101 to keep it operating safely.

[0069] Control stage: During the operation of the magnetic force range-increasing 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 during the operation of the rotating cylinder 101, the control component 112 controls the switching of multiple groups of guiding magnets 116 by controlling the pneumatic valve group 115. The control component 112 will monitor the difference between the load of the power grid and the power supply, so as to control the rotational speed of the rotating cylinder 101 and maintain 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 commands the double-axis double-rod cylinder 114 of the pneumatic mechanism 103 to close, resetting all the guiding magnets 116. The rotating cylinder 101 begins to decelerate. Due to the powerful inertia formed by the high-speed rotation of the counterweight flywheel 105, a huge torque is output through the rotating shaft 109 to the input end of the gearbox 111, and then input to the generator 110 to generate electricity. The mechanical energy of the counterweight flywheel 105 is converted into electrical energy through the generator 110 and output to the power grid. A variety of gears with different numbers of teeth are installed inside the gearbox 111. When the power of the main shaft is transmitted to the gearbox 111, by selecting different gears with different numbers of teeth to mesh, the transmission ratio can be changed, that is, the speed ratio of the input shaft to the output shaft. In this way, the gearbox 111 can convert the low-speed high-torque output of the flywheel main shaft into a high-speed 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 all the relevant electrical devices of the present invention, such as the air compressor 113, the Hall sensor assembly 104, the pneumatic valve group 115, etc.

[0072] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A magnetic range-extending flywheel energy storage system, characterized in that: It comprises 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 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) via 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 of the end surfaces 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 extended lines of the two rows of permanent magnets (108) form an angle of 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 at intervals of 120° 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) determines the position of the guide magnet group (107) on the rotating cylinder (101) through the Hall sensor component (104), and controls the multiple double-axis double-rod cylinders (114) through the pneumatic valve group (115), thereby realizing the control of 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 perform rotational motion. 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) being 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) being 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 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 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, thereby reducing the reaction thrust in the area where the guide magnet (116) and the permanent magnet group (108) in the guide rail magnet group (107) meet at the minimum distance and the maximum distance. 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-enter 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-axis 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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