A suspended flywheel battery

Abstract

The present invention discloses a suspended flywheel battery, comprising: a conversion device for converting externally input electrical energy into mechanical energy for storage and reversely converting mechanical energy into electrical energy; an energy storage device for storing and outputting mechanical energy, comprising an energy storage flywheel, a suspension unit and a lifting unit, wherein the top and bottom ends of the energy storage flywheel are rotatably connected to the suspension unit and the lifting unit respectively, the lifting unit is fixedly connected to and communicated with an oil pump assembly, the bottom surface of the lifting unit is fixedly connected to a vacuum shell, the oil pump assembly, the energy storage flywheel suspension unit and the lifting unit are all arranged in an inner cavity of the vacuum shell, and the conversion device is detachably connected to the outer surface of the vacuum shell; an auxiliary device is used to extract air from the inner cavity of the vacuum shell and maintain the inner cavity pressure of the vacuum shell. The present invention can realize stable suspension of the flywheel by using high-pressure air and permanent magnets, realize low friction resistance of flywheel rotation by using the lifting unit, and improve the energy storage efficiency of the flywheel battery.

Description

Technical Field

[0001] The present invention relates to the technical field of flywheel energy storage, in particular to a suspended flywheel battery. Background Art

[0002] Flywheel energy storage refers to a method of energy storage that uses an electric motor to drive a flywheel to rotate at high speed, and then uses the flywheel to drive a generator to generate electricity when needed. The technical characteristics are high power density and long life. The flywheel body is the core component of the flywheel energy storage system. Its function is to strive to increase the rotor's maximum angular velocity, reduce the rotor weight, and maximize the storage capacity of the flywheel energy storage system. Current flywheel energy storage technologies mostly use low-temperature superconducting or electromagnetic levitation technology, but there are some defects. The application environment of low-temperature superconducting magnetic levitation is very harsh and difficult to apply in practice. Electromagnetic levitation consumes a lot of energy, and the final energy consumption is relatively high, which is not economical. Therefore, it is necessary to design a suspended flywheel battery to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a suspended flywheel battery to solve the problems existing in the above-mentioned prior art. It can achieve stable suspension of the flywheel by using high-pressure air and permanent magnets, and achieve low friction resistance of flywheel rotation by using a supporting unit, thereby improving the energy storage efficiency of the flywheel battery.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A suspended flywheel battery comprises: a conversion device for converting external input electrical energy into mechanical energy for storage and reversely converting mechanical energy into electrical energy; an energy storage device for storing and outputting mechanical energy, which comprises an energy storage flywheel, a suspension unit and a lifting unit, wherein the top and bottom ends of the energy storage flywheel are rotatably connected to the suspension unit and the lifting unit respectively, the lifting unit is fixedly connected to and communicated with an oil pump assembly, the bottom surface of the lifting unit is fixedly connected to a vacuum shell, the oil pump assembly, the energy storage flywheel, the suspension unit and the lifting unit are all arranged in the inner cavity of the vacuum shell, the conversion device is connected to the The outer side of the vacuum shell is detachably connected; an auxiliary device is used to extract air from the inner cavity of the vacuum shell and maintain the pressure in the inner cavity of the vacuum shell. The auxiliary device includes an air collection component and a power component. The power component is arranged on one side of the vacuum shell. The air collection component is fixedly connected and communicated with the power component through a first pipe. The power component is fixedly connected and communicated with the lifting unit through a second pipe. The first pipe and the second pipe respectively pass through the vacuum shell and are sealed with the vacuum shell. The air collection component is sleeved on the outer side of the bottom end of the energy storage flywheel and fixedly connected to the top surface of the lifting unit.

[0006] Preferably, the energy storage flywheel includes a first wheel disc and a second wheel disc with exactly the same structure, and a first rotating shaft and a second rotating shaft are fixedly connected to the center of the top surface of the first wheel disc and the center of the bottom surface of the second wheel disc respectively. The first rotating shaft is rotatably connected to the suspension unit, and the second rotating shaft passes through the air gathering component and is rotatably connected to the lifting unit. A plurality of permanent magnets are fixed between the first wheel disc and the second wheel disc, and the magnetic poles of the permanent magnets are arranged toward the vacuum shell, and the magnetic poles of two adjacent permanent magnets on the same side are arranged in opposite directions.

[0007] Preferably, the lifting unit includes a supporting shell, which is sleeved on the bottom end of the second rotating shaft, and the supporting shell is clearance-matched with the outer side surface of the second rotating shaft. A plurality of rectangular annular grooves are provided on the inner side surface of the supporting shell, and the annular grooves are filled with oil. The oil is arranged in contact with the side surface of the second rotating shaft, and the side surface of the annular groove is fixedly connected and communicated with the oil pump assembly. The bottom end of the inner side surface of the supporting shell is fixedly connected and communicated with the power assembly through the second pipeline, and the top surface of the supporting shell is fixedly connected to the air collecting assembly.

[0008] Preferably, the air collection assembly includes an air hood and an annular air pipe, the bottom surface of the air hood is fixedly connected to the top surface of the support shell, the side surface of the inner cavity of the air hood is fixedly connected to the side surface of the air pipe, and a plurality of air suction holes are provided on the side of the air pipe away from the air hood. The side surface of the air pipe is fixedly connected and connected to a first pipe, the first pipe passes through the air hood and is sealed with the air hood, and the second rotating shaft passes through the air hood and the air pipe respectively.

[0009] Preferably, the power assembly includes a gas tank and an air compressor, the gas tank and the air compressor are fixedly connected and communicated through a third pipe, the air compressor is fixedly connected and communicated with the first pipe, and the gas tank is fixedly connected and communicated with the second pipe.

[0010] Preferably, the oil pump assembly includes a plurality of oil pump pipes and an oil pump, one end of the oil pump pipe is fixedly connected to and communicated with the side surface of the annular groove, and the other end of the oil pump pipe is fixedly connected to and communicated with the oil pump, and the oil pump and the oil pump pipe are both arranged in the inner cavity of the vacuum shell.

[0011] Preferably, the suspension unit includes a plurality of strong magnetic blocks, which are divided into two groups and fixedly mounted on the top of the side wall of the inner cavity of the vacuum shell and the top surface of the first wheel respectively, and are arranged in a one-to-one correspondence, and the ends of the same magnetic poles of the two strong magnetic blocks arranged in a one-to-one correspondence are arranged facing each other.

[0012] Preferably, the conversion device includes a winding stator and a lifting rod, the lifting rod is fixedly connected to the top of the winding stator, the lifting rod is transmission-connected to an external lifting device, and the winding stator is electrically connected to its corresponding electrical component.

[0013] Preferably, the first wheel disc is made of high-strength carbon fiber composite material.

[0014] Preferably, the permanent magnet is arranged near the edge of the first wheel disc and the edge of the second wheel disc, the inner surface of the annular groove is immersed in the oil, and the inner side surface of the support shell and the outer side surface of the second rotating shaft are coated with a coating that is not wetted by the oil.

[0015] The present invention has the following technical effects:

[0016] The present invention converts excess electrical energy into mechanical energy and stores it in an energy storage flywheel by utilizing a conversion device, and achieves a significant reduction in energy loss of the energy storage flywheel during energy storage through a suspension unit and a lifting unit, thereby improving energy storage efficiency.

[0017] The present invention utilizes the rotation of the energy storage flywheel to convert the stored mechanical energy into electrical energy and output it, thereby achieving direct release of energy and optimizing the energy conversion mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a side structural diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the side structure of the energy storage flywheel;

[0022] Figure 4 It is a schematic diagram of the side view of the shell support structure;

[0023] Among them, 1. Winding stator; 2. Lifting rod; 3. Vacuum shell; 4. First pipeline; 5. Second pipeline; 6. First wheel disc; 7. Second wheel disc; 8. First rotating shaft; 9. Second rotating shaft; 10. Permanent magnet; 11. Support shell; 12. Ring groove; 13. Air cover; 14. Air pipe; 15. Intake hole; 16. Air tank; 17. Air compressor; 18. Pump oil pipe; 19. Strong magnetic block. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Depend on Figure 1-4 The suspended flywheel battery shown includes: a conversion device for converting external input electrical energy into mechanical energy for storage and reversely converting mechanical energy into electrical energy; the conversion device includes a winding stator 1 and a lifting rod 2, the lifting rod 2 is fixedly connected to the top of the winding stator 1, the lifting rod 2 is transmission-connected to the external lifting device, and the winding stator 1 is electrically connected to its corresponding electrical components. An energy storage device is used to store and output mechanical energy, which includes an energy storage flywheel, a suspension unit and a lifting unit. The top and bottom ends of the energy storage flywheel are rotatably connected to the suspension unit and the lifting unit respectively. The lifting unit is fixedly connected and communicated with an oil pump assembly. The bottom surface of the lifting unit is fixedly connected to a vacuum shell 3. The oil pump assembly, the energy storage flywheel suspension unit and the lifting unit are all arranged in the inner cavity of the vacuum shell 3. The conversion device is detachably connected to the outer side surface of the vacuum shell 3; an auxiliary device is used to extract air from the inner cavity of the vacuum shell 3 and maintain the inner cavity pressure of the vacuum shell 3. The auxiliary device includes an air collection assembly and a power assembly. The power assembly is arranged on one side of the vacuum shell 3. The air collection assembly is fixedly connected and communicated with the power assembly through a first pipe 4. The power assembly is fixedly connected and communicated with the lifting unit through a second pipe 5. The first pipe 4 and the second pipe 5 respectively pass through the vacuum shell 3 and are sealed with the vacuum shell 3. The air collection assembly is sleeved on the outer side surface of the bottom end of the energy storage flywheel and fixedly connected to the top surface of the lifting unit.

[0027] Furthermore, the thickness of the side wall of the vacuum shell 3 is 2 mm to 10 mm, so as to be able to resist the vacuum pressure.

[0028] A further optimized solution is that the energy storage flywheel includes a first wheel disc 6 and a second wheel disc 7 of identical structure. The first wheel disc 6 and the second wheel disc 7 are both made of a composite of carbon fiber materials, which increases the strength of the two to withstand centrifugal force when rotating. The center of the top surface of the first wheel disc 6 and the center of the bottom surface of the second wheel disc 7 are respectively fixed with a first rotating shaft 8 and a second rotating shaft 9. The first rotating shaft 8 is rotatably connected to the suspension unit, and the second rotating shaft 9 passes through the air collection component and is rotatably connected to the lifting unit. A number of permanent magnets 10 are fixed between the first wheel disc 6 and the second wheel disc 7. The magnetic poles of the permanent magnets 10 are arranged toward the vacuum shell 3, and the magnetic poles of two adjacent permanent magnets 10 on the same side are arranged in opposite directions. The permanent magnets 10, the first wheel disc 6 and the second wheel disc 7 are combined to form a permanent magnet rotor. When the winding stator 1 is sheathed on the outer side of the vacuum shell 3, current is input through the winding stator 1 to excite the energy storage flywheel to start rotating, thereby storing electrical energy as mechanical energy.

[0029] Furthermore, the winding stator 1 is composed of a stator core ring and a plurality of winding coils wound on the stator core ring, and is used for driving and generating electricity. This is a prior art and will not be described in detail here.

[0030] A further optimized solution is provided, in which the lifting unit includes a support shell 11, which is sleeved on the bottom end of the second rotating shaft 9. The support shell 11 is clearance-matched with the outer side surface of the second rotating shaft 9. A number of rectangular annular grooves 12 are provided on the inner side surface of the support shell 11. The annular grooves 12 are filled with oil, and the oil is arranged in contact with the side surface of the second rotating shaft 9. The side surface of the annular groove 12 is fixedly connected and communicated with the oil pump assembly. The bottom end of the inner side surface of the support shell 11 is fixedly connected and communicated with the power assembly through the second pipe 5. The power assembly can provide high-pressure air to the inner cavity of the support shell 11 through the second pipe 5, and the high-pressure air is used to realize the suspension of the energy storage flywheel. At this time, the side surface of the second rotating shaft 9 is coated with a coating that is not wetted by oil. The sealing of the second rotating shaft 9 and the inner side surface of the support shell 11 is realized by the oil, which reduces the friction between the support shell 11 and the second rotating shaft 9 during rotation. The top surface of the support shell 11 is fixedly connected to the air collection assembly. The suspension unit includes several strong magnetic blocks 19, divided into two groups and fixedly mounted on the top of the inner sidewall of the vacuum housing 3 and the top surface of the first wheel 6. The two corresponding strong magnetic blocks 19 are arranged with their ends with the same magnetic poles facing each other. The strong magnetic blocks 19 fixed to the first wheel 6 have the same magnetic poles at the ends closest to the vacuum housing 3. This ensures that the energy storage flywheel is maintained vertically in the support housing 11 by the mutual repulsion of the two groups of strong magnetic blocks 19.

[0031] Furthermore, the vacuum shell 3 is made of carbon fiber composite material, has extremely high tensile strength, and can withstand high-intensity negative pressure.

[0032] A further optimized solution is that the air collecting assembly includes an air hood 13 and an annular air pipe 14. The bottom surface of the air hood 13 is fixedly connected to the top surface of the support shell 11. The side of the inner cavity of the air hood 13 is fixedly connected to the side of the air pipe 14. A plurality of air intake holes 15 are provided on the side of the air pipe 14 away from the air hood 13. The side of the air pipe 14 is fixedly connected to and communicates with the first pipe 4. The first pipe 4 passes through the air hood 13 and is sealed to the air hood 13. The second rotating shaft 9 passes through the air hood 13 and the air pipe 14 respectively. By sucking a small amount of high-pressure gas leaking from the gap between the support shell 11 and the second rotating shaft 9 in the air hood 13 through the air intake holes 15 and entering the air compressor 17 through the first pipe 4, the vacuum degree of the vacuum shell 3 is maintained, and excess gas is prevented from entering the upper part of the second wheel disc 7, thereby affecting the energy storage flywheel.

[0033] The power assembly includes a gas tank 16 and an air compressor 17. The gas tank 16 and the air compressor 17 are fixedly connected and communicated with each other through a third pipe (not shown in the drawings). The air compressor 17 is fixedly connected and communicated with the first pipe 4. The gas tank 16 is fixedly connected and communicated with the second pipe 5. The gas tank 16 provides gas of a certain pressure to the support shell 11 through the second pipe 5, thereby supporting the energy storage flywheel. At the same time, the first pipe 4 extracts a small amount of high-pressure gas in the air cover 13 that leaks from the gap between the support shell 11 and the second rotating shaft 9, thereby achieving a vacuum environment in the vacuum shell 3 and reducing the energy loss of the energy storage flywheel rotation.

[0034] The oil pump assembly includes several oil pump pipes 18 and an oil pump (not shown in the drawings). One end of the oil pump pipe 18 is fixedly connected to and communicated with the side of the annular groove 12, and the other end of the oil pump pipe 18 is fixedly connected to and communicated with the oil pump. The oil pump and the oil pump pipe 18 are both arranged in the inner cavity of the vacuum shell 3. The oil pump pipe 18 can provide a certain pressure and oil replenishment to the oil in the annular groove 12 to avoid failure of the seal between the support shell 11 and the second rotating shaft 9.

[0035] Furthermore, in order for the oil pump to replenish the oil in the support shell 11, the oil pump is connected in series with an oil tank (not shown in the drawings), and the oil tank is fixedly connected and communicated with the oil pump through a pipeline (not shown in the drawings). The oil tank is arranged on the outer side of the vacuum shell 3, and the pipeline passes through the vacuum shell 3 and is sealed with the vacuum shell 3. The structures of the oil tank, pipeline and oil pump are all existing technologies and will not be repeated here.

[0036] A further optimization scheme places permanent magnets 10 near the edges of the first and second discs 6 and 7. This not only facilitates the rotation of the winding stator 1, but also concentrates weight on the edges of the first and second discs 6 and 7, achieving energy storage per unit mass. The inner surface of the annular groove 12 is infiltrated with oil, while the inner side surfaces of the support shell 11 and the outer surface of the second rotating shaft 9 are coated with an oil-insoluble coating. This utilizes the annular groove 12 to create resistance to the oil, and the non-wetted inner side surfaces of the support shell 11 and the outer surface of the second rotating shaft 9 reduce friction with the oil, thereby improving the sealing performance of the inner side surfaces of the support shell 11 and the outer surface of the second rotating shaft 9.

[0037] The working process of this embodiment is as follows:

[0038] When the flywheel battery is needed, excess energy is converted into electrical energy and input into the winding stator 1 through the power distribution facilities. The energy storage flywheel inside the vacuum shell 3 is accelerated by the winding stator 1. Because the energy storage flywheel is composed of a permanent magnet 10, a first wheel disc 6, and a second wheel disc 7, it is equivalent to the rotor of a permanent magnet motor, and the winding stator 1 is equivalent to the stator of the permanent magnet motor. The current converted from excess electrical energy is passed into the winding stator 1 to excite the energy storage flywheel and continuously rotate it. When the winding stator 1 no longer inputs power, it is necessary to use an external lifting device to lift the winding stator 1 away from the vacuum shell 3 to prevent the rotation of the energy storage flywheel from generating an induced current in the winding stator 1, thereby losing the stored mechanical energy.

[0039] When the energy storage flywheel is continuously rotating, in order to reduce the natural loss of the energy storage flywheel, it is necessary to minimize the friction loss of the energy storage flywheel. It is necessary to start the air compressor 17 to draw the air in the vacuum shell 3 into a vacuum through the suction hole 15 opened on the air pipe 14, thereby greatly reducing the friction between the energy storage flywheel and the air. At the same time, in order to reduce the rotational energy loss of the energy storage flywheel rotating shaft, that is, the second rotating shaft 9, a multi-layer annular groove 12 is opened on the inner wall of the support shell 11, and the annular groove 12 is filled with oil with a certain pressure. At the same time, the inner cavity side surface of the support shell 11 and the outer surface of the second rotating shaft 9 are coated with a coating that is not wetted by the oil. The inner cavity surface of the annular groove 12 is wetted with the oil, so that the oil can be fixed relatively stably in the annular groove 12. At the same time, the oil can also fill the tiny gap between the support shell 11 and the outer surface of the second rotating shaft 8, and finally the floating rotation of the energy storage flywheel with extremely low friction resistance in the support shell 11 is realized. At the same time, when the energy storage flywheel stops rotating, in order to prevent the energy storage flywheel from tilting and causing extrusion damage to the support shell 11, a number of strong magnetic blocks 19 are arranged on the circumferential side of the first rotating shaft 8. The energy storage flywheel is vertically suspended by the mutually repelling strong magnetic blocks 19.

[0040] When the mechanical energy of the energy storage flywheel needs to be released, an external lifting device is required to cover the winding stator 1 outside the vacuum shell 3 so that the rotation of the energy storage flywheel generates an induced current in the winding stator 1, and the stored mechanical energy is converted into electrical energy.

[0041] Example 2:

[0042] The second rotating shaft 9 is made of bearing steel, has an inner diameter of 102 mm, the bottom thickness of the support shell 11 is 30 mm, the wall thickness is 30 mm, the annular groove 12 has a groove depth of 3 mm and a length of 3 mm, and the supply pressure of the gas tank 16 is 20 MPa, 40 MPa, 80 MPa, 200 MPa, 400 MPa, 800 MPa, 1000 MPa, 1500 MPa, and 2000 MPa. The pressure analysis results are as follows:

[0043]

[0044] As can be seen from the table above, when the air bearing deforms more than 0.1mm under pressure exceeding 1500MPa, it can be considered to have failed. Therefore, the air bearing can operate normally under pressures less than 1350MPa. Therefore, the supply pressure of the air tank 16 is controlled below 1350MPa based on the weight of the energy storage flywheel.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A suspended flywheel battery, characterized in that: include: A conversion device for converting external input electrical energy into mechanical energy for storage and reversely converting mechanical energy into electrical energy; An energy storage device is used for storing and outputting mechanical energy, comprising an energy storage flywheel, a suspension unit and a lifting unit, wherein the top and bottom ends of the energy storage flywheel are rotatably connected to the suspension unit and the lifting unit respectively, the lifting unit is fixedly connected to and communicates with an oil pump assembly, the bottom surface of the lifting unit is fixedly connected to a vacuum shell (3), the oil pump assembly, the energy storage flywheel, the suspension unit and the lifting unit are all arranged in the inner cavity of the vacuum shell (3), and the conversion device is detachably connected to the outer side surface of the vacuum shell (3); An auxiliary device is used to extract air from the inner cavity of the vacuum shell (3) and maintain the inner cavity pressure of the vacuum shell (3), the auxiliary device comprising an air collecting component and a power component, the power component being arranged on one side of the vacuum shell (3), the air collecting component being fixedly connected and communicated with the power component via a first pipe (4), the power component being fixedly connected and communicated with the lifting unit via a second pipe (5), the first pipe (4) and the second pipe (5) respectively passing through the vacuum shell (3) and being sealedly connected to the vacuum shell (3), the air collecting component being sleeved on the outer side surface of the bottom end of the energy storage flywheel and being fixedly connected to the top surface of the lifting unit; The energy storage flywheel comprises a first wheel disc (6) and a second wheel disc (7) of identical structure; a first rotating shaft (8) and a second rotating shaft (9) are fixedly connected to the center of the top surface of the first wheel disc (6) and the center of the bottom surface of the second wheel disc (7), respectively; the first rotating shaft (8) is rotationally connected to the suspension unit; the second rotating shaft (9) passes through the air gathering component and is rotationally connected to the lifting unit; a plurality of permanent magnets (10) are fixedly connected between the first wheel disc (6) and the second wheel disc (7); the magnetic poles of the permanent magnets (10) are arranged toward the vacuum shell (3), and the magnetic poles of two adjacent permanent magnets (10) on the same side are arranged in opposite directions; The lifting unit includes a supporting shell (11), which is sleeved on the bottom end of the second rotating shaft (9), and the supporting shell (11) is clearance-matched with the outer side surface of the second rotating shaft (9). The inner side surface of the supporting shell (11) is provided with a plurality of rectangular annular grooves (12), and the annular grooves (12) are filled with oil. The oil is arranged in contact with the side surface of the second rotating shaft (9). The side surface of the annular groove (12) is fixedly connected and communicated with the oil pump assembly. The bottom end of the inner side surface of the supporting shell (11) is fixedly connected and communicated with the power assembly through the second pipe (5), and the top surface of the supporting shell (11) is fixedly connected with the air collecting assembly.

2. A suspended flywheel battery according to claim 1, characterized in that: The air collecting assembly comprises an air hood (13) and an annular air pipe (14); the bottom surface of the air hood (13) is fixedly connected to the top surface of the support shell (11); the inner cavity side surface of the air hood (13) is fixedly connected to the side surface of the air pipe (14); a plurality of air suction holes (15) are provided on the side of the air pipe (14) away from the air hood (13); the side surface of the air pipe (14) is fixedly connected to and communicated with a first pipe (4); the first pipe (4) passes through the air hood (13) and is sealed with the air hood (13); the second rotating shaft (9) passes through the air hood (13) and the air pipe (14) respectively.

3. The suspended flywheel battery according to claim 2, characterized in that: The power assembly comprises a gas tank (16) and an air compressor (17); the gas tank (16) and the air compressor (17) are fixedly connected and communicated with each other via a third pipeline; the air compressor (17) is fixedly connected and communicated with the first pipeline (4); and the gas tank (16) is fixedly connected and communicated with the second pipeline (5).

4. The suspended flywheel battery according to claim 1, characterized in that: The oil pump assembly comprises a plurality of oil pump pipes (18) and an oil pump. One end of the oil pump pipe (18) is fixedly connected to and communicated with the side surface of the annular groove (12), and the other end of the oil pump pipe (18) is fixedly connected to and communicated with the oil pump. The oil pump and the oil pump pipe (18) are both arranged in the inner cavity of the vacuum shell (3).

5. The suspended flywheel battery according to claim 1, characterized in that: The suspension unit comprises a plurality of strong magnetic blocks (19), the plurality of strong magnetic blocks (19) being divided into two groups and respectively fixedly mounted on the top of the inner cavity side wall of the vacuum shell (3) and the top surface of the first wheel disc (6), and arranged in a one-to-one correspondence, with one end of the same magnetic pole of the two strong magnetic blocks (19) arranged in a one-to-one correspondence facing each other.

6. The suspended flywheel battery according to claim 1, characterized in that: The conversion device comprises a winding stator (1) and a lifting rod (2), wherein the lifting rod (2) is fixedly connected to the top of the winding stator (1), the lifting rod (2) is transmission-connected to an external lifting device, and the winding stator (1) is electrically connected to an electrical component adapted thereto.

7. The suspended flywheel battery according to claim 1, characterized in that: The first wheel disc (6) is made of high-strength carbon fiber composite material.

8. The suspended flywheel battery according to claim 4, characterized in that: The permanent magnet (10) is arranged near the edge of the first wheel disc (6) and the edge of the second wheel disc (7), the inner surface of the annular groove (12) is immersed in the oil, and the inner side surface of the support shell (11) and the outer side surface of the second rotating shaft (9) are coated with a coating that is not immersed in the oil.

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