A dual cavity housing assembly for a flywheel energy storage device and methods of use thereof

Abstract

The application belongs to the technical field of energy storage power generation, and relates to a double-cavity shell assembly for a flywheel energy storage device and a use method thereof. The lower disc body is detachably fixedly connected with the upper disc body, so that the outer disc body can be conveniently separated, and the motor and the flywheel disc can be conveniently overhauled. The motor is rotationally connected with the upper disc body and located inside the upper disc body. A threaded ring is arranged on the upper disc body. A connecting groove is arranged on the lower disc body. The threaded ring and the inner wall of the connecting groove are connected through threads, that is, the output end of the motor is clamped with the flywheel disc, so that the motor and the flywheel disc can be conveniently separated, and the motor and the flywheel disc can be conveniently overhauled and replaced. The technical problem that the conventional flywheel energy storage device with an integrated structure is inconvenient to disassemble and overhaul is solved, and the overhaul time and the energy consumption are reduced.

Description

Technical Field

[0001] This invention belongs to the field of energy storage and power generation technology, and relates to a dual-cavity housing assembly for a flywheel energy storage device and its usage method. Background Technology

[0002] Flywheel energy storage is an innovative physical energy storage technology. Its core lies in converting electrical energy into high-speed rotating mechanical kinetic energy for storage. This energy storage method differs from traditional chemical batteries. It uses a flywheel rotor made of high-strength composite materials to store energy. When energy storage is needed, an electric motor drives the flywheel to accelerate its rotation, reaching a maximum speed of tens of thousands of revolutions per minute. When energy needs to be released, the inertial rotation of the flywheel drives a generator to work, converting the stored kinetic energy back into electrical energy. In conventional flywheel energy storage devices, after the outer disc is installed and stabilized, the inner wall of the outer disc is equipped with a motor and flywheel disc that rotate via bearings. After the motor is started, it controls the rotation of the flywheel disc, which in turn drives the motor to work, converting kinetic energy back into electrical energy, thereby achieving energy regeneration.

[0003] The most significant advantage of this energy storage device lies in its near-transient response capability—it can complete the charging and discharging process within milliseconds, making it irreplaceable in scenarios requiring rapid power compensation. Furthermore, since it does not involve chemical reactions, flywheel energy storage systems can theoretically achieve hundreds of thousands of cycles without performance degradation, far exceeding the lifespan of chemical batteries.

[0004] However, conventional flywheel energy storage devices mostly adopt an integrated structure, which means that when the motor or flywheel is repaired separately, the whole device needs to be disassembled. Separating the flywheel from the cavity requires more time and effort, making maintenance inconvenient. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-cavity housing assembly for a flywheel energy storage device and its usage method, so as to solve the technical problem that conventional integrated flywheel energy storage structures are inconvenient to disassemble and maintain.

[0006] To achieve the above objectives, the present invention employs the following technical solution: In a first aspect, the present invention discloses a dual-cavity housing assembly for a flywheel energy storage device, comprising: Upper plate body; The lower plate is detachably and fixedly connected to the upper plate. The motor is rotatably connected to the upper plate and located inside the upper plate; The flywheel is rotatably connected to the lower plate and located inside the lower plate, and the output end of the motor is engaged with the flywheel.

[0007] Furthermore, the upper plate is provided with a threaded ring, and the lower plate is provided with a connecting groove, wherein the threaded ring is connected to the inner wall of the connecting groove by threads.

[0008] Furthermore, the threaded ring is arranged coaxially with the upper plate, and the connecting groove is arranged coaxially with the lower plate.

[0009] Furthermore, the threaded ring is provided with several rotating blocks around its circumference; The rotating block has an L-shaped structure.

[0010] Furthermore, a connecting ring is fixedly sleeved on the threaded ring, and an installation groove adapted to the connecting ring is opened inside the lower plate. The inner wall of the installation groove is rotatably connected to the surface of the connecting ring, and the connecting ring is located between the plurality of rotating blocks and the threaded ring.

[0011] Furthermore, a sealing ring is fixedly installed on the surface of the connecting ring. The sealing ring is a rubber ring, and the surface of the sealing ring is interference-fitted with the inner wall of the mounting groove.

[0012] Furthermore, at least one fixing bolt is provided on the connecting ring, and the end of the fixing bolt abuts against the inner wall of the lower plate and engages with the lower plate.

[0013] Furthermore, a limiting block is fixedly connected to the output end of the motor, and a slot is provided on the flywheel, with the limiting block embedded in the slot; A bearing is provided between the motor and the upper plate, and a bearing is provided between the flywheel and the lower plate.

[0014] Furthermore, the flywheel is provided with a connecting block, which is an iron block. The connecting block has a slot, and the limiting block is embedded with a magnetic block. The surface of the magnetic block is in contact with the inner wall of the slot.

[0015] Secondly, the present invention also discloses a method of using a dual-cavity housing assembly for a flywheel energy storage device, comprising the following steps: When energy storage is needed, the motor drives the flywheel to rotate faster; When energy needs to be released, the flywheel drives the motor to generate electricity; When maintenance is required, the upper plate body is separated from the lower plate body, and the motor and the flywheel are separated for separate maintenance.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the lower disc and the upper disc are detachably and fixedly connected, facilitating easy separation of the outer disc and convenient maintenance of the motor and flywheel. The output end of the motor is snapped into the flywheel, allowing for easy separation of the motor and flywheel for individual maintenance and replacement. This solves the technical problem of the conventional integrated flywheel energy storage structure being inconvenient for disassembly and maintenance, reducing maintenance time and effort.

[0017] When energy storage is needed, the motor drives the flywheel to rotate rapidly, converting electrical energy into the mechanical kinetic energy of the high-speed rotation of the flywheel for storage. When energy release is needed, the flywheel drives the motor to generate electricity, converting the stored mechanical kinetic energy back into electrical energy for output. When maintenance is required, the upper and lower discs separate, allowing for separate maintenance of the motor and flywheel, facilitating individual repairs and reducing the hassle of overall disassembly. This invention realizes the energy storage and release functions of a flywheel energy storage device, and allows for convenient disassembly and maintenance of the device, enabling separate repairs of the motor and flywheel. This solves the problem of inconvenient disassembly and maintenance in conventional integrated flywheel energy storage devices, improving maintenance efficiency and reducing maintenance difficulty. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a dual-cavity housing assembly for a flywheel energy storage device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the threaded ring structure according to an embodiment of the present invention; Figure 3 This is a side view structural diagram of an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of the structure at point A; Figure 5 This is a flowchart of the method of the present invention.

[0019] The components are: 1. Outer disc; 2. Motor; 3. Flywheel disc; 4. Bearing; 5. Threaded ring; 6. Rotating block; 7. Connecting groove; 8. Connecting ring; 9. Mounting groove; 10. Sealing ring; 11. Fixing bolt; 12. Slot; 13. Limiting block; 14. Magnetic block; 15. Upper disc; 16. Lower disc. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings: Example 1: See Figure 1 A dual-cavity housing assembly for a flywheel energy storage device includes: an upper disk 15, a lower disk 16, a motor 2, and a flywheel disk 3.

[0023] The lower plate 16 and the upper plate 15 are detachably and fixedly connected, which facilitates the separation of the outer plate 1 and the maintenance of the motor 2 and flywheel 3.

[0024] See Figure 2 In a preferred embodiment of the present invention, the upper plate 15 is provided with a threaded ring 5, and the lower plate 16 is provided with a connecting groove 7, wherein the threaded ring 5 is connected to the inner wall of the connecting groove 7 by a thread.

[0025] In a preferred embodiment of the present invention, the threaded ring 5 is arranged coaxially with the upper plate 15, and the connecting groove 7 is arranged coaxially with the lower plate 16.

[0026] See Figure 2 In a preferred embodiment of the present invention, the threaded ring 5 is provided with a plurality of rotating blocks 6 around its circumference; See Figure 2 The rotating block 6 has an L-shaped structure.

[0027] See Figure 3 and Figure 4In a preferred embodiment of the present invention, a connecting ring 8 is fixedly sleeved on the threaded ring 5, and an installation groove 9 adapted to the connecting ring 8 is opened inside the lower plate body 16. The inner wall of the installation groove 9 is rotatably connected to the surface of the connecting ring 8, and the connecting ring 8 is located between a plurality of rotating blocks 6 and the threaded ring 5.

[0028] See Figure 3 and Figure 4 In a preferred embodiment of the present invention, a sealing ring 10 is fixedly installed on the surface of the connecting ring 8. The sealing ring 10 is a rubber ring, and the surface of the sealing ring 10 is interference-fitted with the inner wall of the mounting groove 9.

[0029] See Figure 4 In a preferred embodiment of the present invention, at least one fixing bolt 11 is provided on the connecting ring 8, and the end of the fixing bolt 11 abuts against the inner wall of the lower plate 16 and is engaged with the lower plate 16.

[0030] See Figure 1 The motor 2 is rotatably connected to the upper plate 15 and is located inside the upper plate 15; See Figure 1 The flywheel 3 is rotatably connected to the lower plate 16 and located inside the lower plate 16. The output end of the motor 2 is engaged with the flywheel 3, which facilitates the separation of the motor 2 from the flywheel 3 and makes it easy to inspect and replace the motor 2 and the flywheel 3 separately.

[0031] See Figure 4 In a preferred embodiment of the present invention, the output end of the motor 2 is fixedly connected to a limit block 13.

[0032] See Figure 2 The flywheel 3 has a slot 12, and the limiting block 13 is embedded in the slot 12; See Figure 1 A bearing 4 is provided between the motor 2 and the upper plate 15, and a bearing 4 is provided between the flywheel 3 and the lower plate 16.

[0033] In a preferred embodiment of the present invention, the flywheel 3 is provided with a connecting block, the connecting block is an iron block, the connecting block is provided with a slot 12, and the limiting block 13 is provided with a magnetic block 14, the surface of the magnetic block 14 is in contact with the inner wall of the slot 12.

[0034] This invention solves the technical problem of the inconvenience of disassembly and maintenance in conventional flywheel energy storage devices with their integrated structure. By detachably and securely connecting the upper and lower disks, the motor 2 and flywheel disk 3 can be independently installed in the upper and lower disks respectively, facilitating individual maintenance of the motor or flywheel and reducing maintenance time and effort. Simultaneously, it retains the near-transient response capability inherent in flywheel energy storage devices, completing the charging and discharging process within milliseconds. This makes it suitable for scenarios requiring rapid power compensation, and theoretically, it can achieve hundreds of thousands of cycles without performance degradation, with a lifespan far exceeding that of chemical batteries.

[0035] See Figure 5 Based on the above-mentioned device, the present invention also discloses a method of using a dual-cavity housing assembly for a flywheel energy storage device, comprising the following steps: S1, when energy storage is required, the motor 2 drives the flywheel 3 to accelerate its rotation, converting electrical energy into mechanical kinetic energy of the high-speed rotation of the flywheel for storage.

[0036] S2, when energy needs to be released, the flywheel 3 drives the motor 2 to generate electricity, converting the mechanical kinetic energy stored in the flywheel back into electrical energy output.

[0037] S3, when maintenance is required, the upper plate 15 and the lower plate 16 are separated, and the motor 2 and the flywheel 3 are separated for individual maintenance, which facilitates individual maintenance of the motor or flywheel and reduces the trouble of overall disassembly.

[0038] This invention realizes the energy storage and release functions of the flywheel energy storage device, and when maintenance is required, the device can be easily disassembled for maintenance of the motor and flywheel disc separately. This solves the problem that the conventional integrated structure of flywheel energy storage devices is not easy to disassemble and maintain, thus improving maintenance efficiency and reducing maintenance difficulty.

[0039] Example 2: See Figure 1 This invention discloses a dual-cavity housing assembly for a flywheel energy storage device, comprising an outer disc 1 and a threaded ring 5. The outer disc 1 is composed of an upper disc 15 and a lower disc 16, and two bearings 4 are fixedly installed on the inner wall of the outer disc 1. One end of each bearing 4 is rotatably connected to a flywheel disc 3 and a motor 2, respectively. The top of the flywheel disc 3 is engaged with the bottom of the motor 2. Several rotating blocks 6 are fixedly installed on the surface of the threaded ring 5. A connecting groove 7 adapted to the threaded ring 5 is provided on the inner wall of the outer disc 1.

[0040] In a preferred embodiment of the present invention, see [reference needed]. Figure 2The top of the threaded ring 5 is fixedly connected to the bottom of the upper plate 15, and the surface of the threaded ring 5 is threadedly connected to the inner wall of the connecting groove 7. The center of the threaded ring 5 is on the same straight line as the center of the outer plate 1, and the size of the top of the threaded ring 5 is compatible with the size of the bottom of the upper plate.

[0041] In a preferred embodiment of the present invention, see [reference needed]. Figure 2 Several rotating blocks 6 are arranged in a circular array with the center of the threaded ring 5 as the axis, and the rotating blocks 6 have an "L" shaped structure.

[0042] In a preferred embodiment of the present invention, see [reference needed]. Figure 4 A connecting ring 8 is fixedly installed on the surface of the threaded ring 5. An installation groove 9 adapted to the connecting ring 8 is opened inside the lower plate body 16. The inner wall of the installation groove 9 is rotatably connected to the surface of the connecting ring 8, and the size of the inner wall of the installation groove 9 is adapted to the size of the surface of the connecting ring 8.

[0043] In a preferred embodiment of the present invention, see [reference needed]. Figure 3 and Figure 4 Two sealing rings 10 are fixedly installed on the surface of the connecting ring 8. The sealing rings 10 are rubber rings, and the dimensions of the sealing rings 10 are interference fit with the dimensions of the inner wall of the mounting groove 9.

[0044] In a preferred embodiment of the present invention, see [reference needed]. Figure 4 The inner wall of the connecting ring 8 is threaded with two fixing bolts 11. The surface of the fixing bolts 11 is engaged with the surface of the lower plate 16. The two fixing bolts 11 are symmetrically distributed about the outer plate 1.

[0045] In a preferred embodiment of the present invention, see [reference needed]. Figure 2 A connecting block is fixedly installed on the top of the flywheel 3. The connecting block is made of iron and has a slot 12 on its inner wall. A limit block 13 is engaged with the inner wall of the slot 12. The top of the limit block 13 is fixedly installed with the output end of the motor 2, and the dimensions of the limit block 13 are compatible with the dimensions of the inner wall of the slot 12.

[0046] In a preferred embodiment of the present invention, see [reference needed]. Figure 3 and Figure 4 A magnetic block 14 is fixedly connected to the inner wall of the limiting block 13. The surface of the magnetic block 14 is movably installed with the inner wall of the slot 12, and the center of the magnetic block 14 is on the same straight line as the output end of the motor 2.

[0047] Compared with the prior art, the beneficial technical effects of the present invention are as follows: By creating a connecting groove 7 inside the lower plate 16, a threaded ring 5 is threaded onto the inner wall of the connecting groove 7. The top of the threaded ring 5 is fixedly connected to the bottom of the upper plate 15, facilitating the separation of the outer plate 1 via the threaded ring 5 and the connecting groove 7. This allows for separate maintenance of the motor 2 or flywheel 3. Several rotating blocks 6 are fixedly installed on the top of the threaded ring 5, allowing for the installation and removal of the threaded ring 5 by manipulating the rotating blocks 6. A connecting ring 8 is fixedly connected to the surface of the threaded ring 5, rotating within the mounting groove 9 in the lower plate 16. This allows the connecting ring 8 and the mounting groove 9 to shield the periphery of the threaded ring 5, effectively improving the overall sealing of the outer plate 1. A rubber sealing ring 10 is fixedly connected to the surface of the connecting ring 8, further enhancing the sealing between the connecting ring 8 and the mounting groove 9. Compared to existing technologies, this significantly improves the convenience of maintaining the flywheel energy storage device. The present invention can also install two fixing bolts 11 on the inner wall of the connecting ring 8, so as to limit the connecting ring 8 with the fixing bolts 11, thereby fixing the threaded ring 5 at a suitable angle. The output end of the motor 2 is fixedly connected to the limiting block 13, and the surface of the limiting block 13 engages with the slot 12 on the top of the flywheel 3, so as to separate the limiting block 13 from the slot 12, and facilitate the separation of the motor 2 from the flywheel 3. A magnetic block 14 is fixedly installed on the inner wall of the limiting block 13, so as to contact the iron connecting block with the magnetic block 14, thereby ensuring the connection effect between the motor 2 and the flywheel 3, and effectively improving the use effect of the device.

[0048] Example 3: See Figures 1 to 2 This embodiment discloses a dual-cavity housing assembly for a flywheel energy storage device, including an outer disk 1. In use, after the outer disk 1 is installed stably, a motor 2 and a flywheel disk 3 are rotatably mounted on the inner wall of the outer disk 1 via a bearing 4. After the motor 2 is started, it controls the rotation of the flywheel disk 3. The rotation of the flywheel disk 3 drives the motor 2 to work, converting kinetic energy back into electrical energy, thereby realizing the regeneration of electrical energy. A connecting groove 7 is opened inside the lower disk 16. A threaded ring 5 is threadedly installed on the inner wall of the connecting groove 7. The top of the threaded ring 5 is fixedly connected to the bottom of the upper disk 15. The threaded ring 5 and the connecting groove 7 facilitate the separation of the outer disk 1, making it convenient to perform separate maintenance on the motor 2 or the flywheel disk 3, avoiding the problem that it is inconvenient to repair the motor 2 or the flywheel disk 3 separately during maintenance.

[0049] Reference Figures 2 to 4Several rotating blocks 6 are fixedly installed on the top of the threaded ring 5. The rotating blocks 6 control the rotation of the threaded ring 5, thereby facilitating the installation and removal of the threaded ring 5. A connecting ring 8 is fixedly connected to the surface of the threaded ring 5. The surface of the connecting ring 8 is rotatably installed in the mounting groove 9 inside the lower plate 16. The connecting ring 8 and the mounting groove 9 shield the periphery of the threaded ring 5, effectively improving the sealing performance of the outer plate 1 and preventing the problem of difficulty in achieving a vacuum effect due to the interaction between the inside and outside. A rubber sealing ring 10 is fixedly connected to the surface of the connecting ring 8. The surface of the sealing ring 10 is movably installed in the inner wall of the mounting groove 9. The sealing ring 10 improves the sealing performance between the connecting ring 8 and the mounting groove 9, thereby improving the sealing performance of the outer plate 1.

[0050] Reference Figures 3 to 4 Two fixing bolts 11 are installed on the inner wall of the connecting ring 8. The surface of the fixing bolts 11 is engaged with the inner wall of the lower plate 16. The fixing bolts 11 limit the connecting ring 8, thereby fixing the threaded ring 5 at a suitable angle and preventing the threaded ring 5 from loosening and causing the lower plate 16 to separate. The output end of the motor 2 is fixedly connected to a limiting block 13. The surface of the limiting block 13 is engaged with the slot 12 on the top of the flywheel 3. The limiting block 13 and the slot 12 facilitate the connection between the motor 2 and the flywheel 3, and the limiting block 13 and the slot 12 facilitate the separation between the motor 2 and the flywheel 3. A magnetic block 14 is fixedly installed on the inner wall of the limiting block 13. One end of the magnetic block 14 is movably connected to the inner wall of the slot 12. The magnetic block 14 contacts the iron connecting block, thereby ensuring the connection effect between the motor 2 and the flywheel 3.

[0051] The implementation principle of the dual-cavity housing assembly for a flywheel energy storage device of the present invention is as follows: A connecting groove 7 is opened inside the lower plate 16, and a threaded ring 5 is threadedly installed on the inner wall of the connecting groove 7. The top of the threaded ring 5 is fixedly connected to the bottom of the upper plate 15, so that the outer plate 1 can be easily separated by the threaded ring 5 and the connecting groove 7, which facilitates the separate maintenance of the motor 2 or the flywheel 3, avoiding the inconvenience of repairing the motor 2 or the flywheel 3 separately. Several rotating blocks 6 are fixedly installed on the top of the threaded ring 5, so that the rotation of the threaded ring 5 can be controlled by the rotating blocks 6, thereby facilitating the installation and removal of the threaded ring 5. A connecting ring 8 is fixedly connected to the surface of the outer disc 1. The surface of the connecting ring 8 is rotatably installed in the mounting groove 9 inside the lower disc 16. This allows the connecting ring 8 and the mounting groove 9 to shield the periphery of the threaded ring 5, effectively improving the sealing performance of the outer disc 1 and preventing the problem of difficulty in achieving a vacuum effect due to interaction between the inside and outside. A rubber sealing ring 10 is fixedly connected to the surface of the connecting ring 8. The surface of the sealing ring 10 is movably installed in the inner wall of the mounting groove 9. This allows the sealing performance between the connecting ring 8 and the mounting groove 9 to be improved, thereby enhancing the sealing performance of the outer disc 1.

[0052] In this invention, two fixing bolts 11 are installed on the inner wall of the connecting ring 8. The surface of the fixing bolts 11 is engaged with the inner wall of the lower plate 16 to limit the connecting ring 8, thereby fixing the threaded ring 5 at a suitable angle and preventing the outer plate 1 from separating due to loosening of the threaded ring 5. A limiting block 13 is fixedly connected to the output end of the motor 2. The surface of the limiting block 13 is engaged with the slot 12 on the top of the flywheel 3 to facilitate the connection between the motor 2 and the flywheel 3. Separating the limiting block 13 from the slot 12 facilitates the separation of the motor 2 from the flywheel 3. A magnetic block 14 is fixedly installed on the inner wall of the limiting block 13. One end of the magnetic block 14 is movably connected to the inner wall of the slot 12 to facilitate contact between the magnetic block 14 and the iron connecting block, thereby ensuring the connection effect between the motor 2 and the flywheel 3.

[0053] In this invention, the lower disc and the upper disc are detachably and fixedly connected, facilitating easy separation of the outer disc and convenient maintenance of the motor and flywheel. The output end of the motor is snapped into the flywheel, allowing for easy separation of the motor and flywheel for individual maintenance and replacement. This solves the technical problem of the conventional integrated flywheel energy storage structure being inconvenient for disassembly and maintenance, reducing maintenance time and effort.

[0054] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A dual-cavity housing assembly for a flywheel energy storage device, characterized in that, include: Upper plate (15); The lower plate (16) is detachably and fixedly connected to the upper plate (15); The motor (2) is rotatably connected to the upper plate (15) and located inside the upper plate (15); The flywheel (3) is rotatably connected to the lower plate (16) and located inside the lower plate (16). The output end of the motor (2) is engaged with the flywheel (3).

2. The dual-cavity housing assembly for a flywheel energy storage device according to claim 1, characterized in that, The upper plate (15) is provided with a threaded ring (5), and the lower plate (16) is provided with a connecting groove (7). The threaded ring (5) is connected to the inner wall of the connecting groove (7) by a thread.

3. The dual-cavity housing assembly for a flywheel energy storage device according to claim 2, characterized in that, The threaded ring (5) is coaxially arranged with the upper plate (15), and the connecting groove (7) is coaxially arranged with the lower plate (16).

4. A dual-cavity housing assembly for a flywheel energy storage device according to claim 2, characterized in that, The threaded ring (5) has several rotating blocks (6) around its periphery; The rotating block (6) has an L-shaped structure.

5. A dual-cavity housing assembly for a flywheel energy storage device according to claim 4, characterized in that, A connecting ring (8) is fixedly sleeved on the threaded ring (5). An installation groove (9) adapted to the connecting ring (8) is opened inside the lower plate (16). The inner wall of the installation groove (9) is rotatably connected to the surface of the connecting ring (8). The connecting ring (8) is located between several rotating blocks (6) and the threaded ring (5).

6. A dual-cavity housing assembly for a flywheel energy storage device according to claim 5, characterized in that, A sealing ring (10) is fixedly installed on the surface of the connecting ring (8). The sealing ring (10) is a rubber ring, and the surface of the sealing ring (10) is interference-fitted with the inner wall of the mounting groove (9).

7. A dual-cavity housing assembly for a flywheel energy storage device according to claim 5, characterized in that, At least one fixing bolt (11) is provided on the connecting ring (8), and the end of the fixing bolt (11) abuts against the inner wall of the lower plate (16) and is engaged with the lower plate (16).

8. A dual-cavity housing assembly for a flywheel energy storage device according to claim 1, characterized in that, The output end of the motor (2) is fixedly connected to a limiting block (13), and a slot (12) is provided on the flywheel disk (3), and the limiting block (13) is embedded in the slot (12); A bearing (4) is provided between the motor (2) and the upper plate (15), and a bearing (4) is provided between the flywheel (3) and the lower plate (16).

9. A dual-cavity housing assembly for a flywheel energy storage device according to claim 8, characterized in that, The flywheel (3) is provided with a connecting block, which is an iron block. The connecting block has a slot (12) and a magnetic block (14) is embedded in the limiting block (13). The surface of the magnetic block (14) is in contact with the inner wall of the slot (12).

10. A method of using a dual-cavity housing assembly for a flywheel energy storage device, characterized in that, Includes the following steps: When energy storage is needed, the motor (2) drives the flywheel (3) to rotate faster; When energy needs to be released, the flywheel (3) drives the motor (2) to generate electricity; When maintenance is required, the upper plate (15) is separated from the lower plate (16), and the motor (2) and the flywheel (3) are separated for separate maintenance.

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