Flywheel energy storage device

Abstract

The invention discloses a flywheel energy storage device which comprises a protection part, a mounting part arranged on the protection part and a sealing part arranged on the mounting part. The mounting part comprises a lifting piece, a rotating piece arranged on the lifting piece and a fixed piece arranged on the rotating piece; the fixing piece comprises a rotating disc, an arc-shaped groove formed in the rotating disc, a control rod arranged in the arc-shaped groove and a fixing block arranged on the control rod, a main body of the fixing block is a cuboid, and a stepped notch is formed in the outer side of the top end of the fixing block; according to the equipment, the rotating disc is controlled to rotate, the lifting piece and the rotating piece are matched with each other to drive the fixing piece to operate, so that the sealing cover is connected with the shell, corresponding tools do not need to be carried, multiple parts can be synchronously fixed and disassembled at the same time through the installation mode, the installation steps are simplified, and the overhaul efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of energy storage equipment technology, and in particular to a flywheel energy storage device. Background Technology

[0002] Flywheel energy storage devices are a physical energy storage technology based on the principle of mechanical rotation to store and release energy. The core logic is to store energy by converting electrical energy into the high-speed rotational kinetic energy of the flywheel, and then converting the kinetic energy of the flywheel back into electrical energy for output when needed.

[0003] Currently, most energy storage devices on the market require internal vacuuming, necessitating the use of corresponding seals. These seals need to be replaced periodically to prevent aging and damage to the equipment. However, the mainstream method for connecting and securing the housing of current energy storage devices is to use nuts for tightening. This method requires specialized tools such as wrenches to manually operate on each nut during subsequent disassembly, incurring significant labor costs and adding to the complexity of the operation due to the need to carry additional tools. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that: special tools such as wrenches are needed to operate on the nuts one by one, and additional tools are also required.

[0005] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a flywheel energy storage device, which includes a protective part, a mounting part disposed on the protective part, and a sealing part disposed on the mounting part; the mounting part includes a lifting component, a rotating component disposed on the lifting component, and a fixing component disposed on the rotating component; the fixing component includes a rotating disk, an arc-shaped groove disposed on the rotating disk, a control rod disposed inside the arc-shaped groove, and a fixing block disposed on the control rod.

[0006] In a preferred embodiment of the flywheel energy storage device of the present invention: the main body of the fixed block is a cuboid, and a stepped notch is provided on the outer side of its top, and the end of the notch is transitioned by a sloping curved surface.

[0007] In a preferred embodiment of the flywheel energy storage device of the present invention: the protective part includes a cover, a housing disposed on the cover, a base disposed on the lower side of the housing, and a fixing ring disposed inside the housing.

[0008] In a preferred embodiment of the flywheel energy storage device of the present invention: the lifting component includes a cavity disposed inside the cover, a lifting ring disposed inside the cavity, a long rod disposed on the lifting ring, and a long groove formed on the lower side of the cavity.

[0009] In a preferred embodiment of the flywheel energy storage device of the present invention: the rotating component includes a rotating ring disposed inside the cover, an inclined groove disposed on the rotating ring, and a control ball disposed inside the inclined groove; the bottom end of the rotating ring is fixedly connected to the top end of the rotating disk, and the control ball is fixedly connected to the inner side of the long rod.

[0010] In a preferred embodiment of the flywheel energy storage device of the present invention: the inside of the cover is further provided with a storage slot and a translation slot, and eight sets of the storage slot, translation slot, arc-shaped slot, control rod and fixing block are provided.

[0011] In a preferred embodiment of the flywheel energy storage device of the present invention: the protective part is further provided with a sealing part, which includes a sealing ring disposed inside the housing, a groove disposed at the bottom end of the sealing ring and the cover, and a T-shaped sealing ring disposed inside the groove.

[0012] In a preferred embodiment of the flywheel energy storage device of the present invention: the protective part is provided with an energy storage part, which includes a flywheel body disposed inside the housing, a lower radial magnetic bearing and a lower axial magnetic bearing disposed on the lower side of the flywheel body, an upper axial magnetic bearing disposed on the upper side of the flywheel body, a high-speed motor disposed on the upper side of the upper axial magnetic bearing, and an upper radial magnetic bearing disposed on the high-speed motor.

[0013] In a preferred embodiment of the flywheel energy storage device of the present invention: the mounting part further includes a control component, which includes a threaded rod disposed inside the cavity, a rotating disk disposed on the threaded rod, a storage groove disposed on the rotating disk, and a control lever disposed inside the storage groove.

[0014] In a preferred embodiment of the flywheel energy storage device of the present invention: the protective part is further provided with a leveling part, which includes a fixing rod provided on the base, a mounting seat provided at the bottom end of the fixing rod, and a leveling wheel and a shim provided on the outside of the fixing rod.

[0015] The beneficial effects of this invention are as follows: by controlling the rotation of the rotating disk, the fixing component is driven to operate under the cooperation of the lifting component and the rotating component, so that the cover is connected to the outer shell. This installation method not only does not require carrying corresponding tools, but also allows multiple parts to be fixed and disassembled at the same time, simplifying the installation steps and improving maintenance efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0017] Figure 1 The overall structural diagram of the flywheel energy storage device is shown;

[0018] Figure 2 A front sectional view of the flywheel energy storage device is shown;

[0019] Figure 3 A cross-sectional view of the flywheel energy storage device's cover is shown;

[0020] Figure 4 An exploded view of the internal structure of the flywheel energy storage device's cover is shown.

[0021] Figure 5 It shows Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 It shows Figure 4 Enlarged view at point B in the middle;

[0023] Figure 7 A structural diagram of the energy storage section of the flywheel energy storage device is shown;

[0024] Figure 8 A structural diagram of the base of the flywheel energy storage device is shown. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0027] Reference Figures 1 to 8 This embodiment provides a flywheel energy storage device, including a protective part 1, a mounting part 2 disposed on the protective part 1, and a sealing part 3 disposed on the mounting part 2; the mounting part 2 includes a lifting member 21, a rotating member 22 disposed on the lifting member 21, and a fixing member 23 disposed on the rotating member 22; the fixing member 23 includes a rotating disk 231, an arc-shaped groove 232 disposed on the rotating disk 231, a control rod 233 disposed inside the arc-shaped groove 232, and a fixing block 234 disposed on the control rod 233.

[0028] The core function of the protective part 1 is physical protection and safety isolation, isolating the flywheel from the outside world to prevent external factors from affecting the rotation of the flywheel; the function of the mounting part 2 is to fix the equipment and adapt its position, connecting various parts to ensure the operation of the equipment; the function of the sealing part 3 is to enhance the isolation performance. When the flywheel rotates, in order to prevent air from affecting the rotation of the flywheel, it is necessary to draw a vacuum inside. The sealing part 3 is used to prevent outside air from entering the device and thus affecting the kinetic energy of the flywheel.

[0029] In addition, the installation part 2 is divided into a lifting member 21, a rotating member 22 and a fixing member 23. The function of the lifting member 21 is to drive the rotating member 22 to rotate by its own rising and falling, while the function of the rotating member 22 is to make the fixing member 23 complete the fixing work by rotating.

[0030] In addition, the cover 11 has a rotating disk 231 inside, with multiple arc-shaped grooves 232 on its surface. A control rod 233 is installed in the arc-shaped grooves 232, and the bottom end of the control rod 233 is connected to a fixing block 234, which is placed in the storage slot 237 of the cover 11. When the rotating disk 231 rotates, the arc-shaped grooves 232 exert a squeezing effect on the control rod 233, while the storage slot 237 restricts the movement direction of the fixing block 234. During this process, the squeezed control rod 233 causes the fixing block 234 to expand and contract, ultimately causing the fixing block 234 to lock onto the fixing ring 14 of the outer shell, thereby completing the installation and fixing of the cover 11.

[0031] In summary: by controlling the lifting component 21 to rise or fall, the rotating component 22 can be driven to rotate; when the rotating component 22 rotates, it will further drive the rotating disk 231 in the fixed component 23 to rotate synchronously; during the rotation of the rotating disk 231, the arc groove 232 on its surface will squeeze the control rod 233, so that the control rod 233 drives the lower fixed block 234 to expand and contract in the storage slot 237, and finally complete the installation, fixing and disassembly of the cover 11.

[0032] Reference Figures 1-6 As an optional embodiment, a flywheel energy storage device is provided, including a protective part 1 including a cover 11, a housing 12 disposed on the cover 11, a base 13 disposed on the lower side of the housing 12, and a fixing ring 14 disposed inside the housing 12.

[0033] The function of the cover 11 is to seal the top of the outer shell, thus completely isolating the outside world from the inside of the shell; the shell 12, as the outer frame structure of the device, mainly serves to house and protect the internal core components, isolate them from external dust, moisture, collisions and other interference, and at the same time provide assembly support for internal parts, maintaining the integrity and stability of the overall structure; the base 13, as the basic support component of the entire device, mainly serves to provide a stable installation platform and fix the position of the shell 12, cover 11 and other linkage components; the function of the fixing ring 14 is to cooperate with the fixing component 23 to complete the installation and fixing of the cover 11 and the shell 12.

[0034] Furthermore, the lifting component 21 includes a cavity 211 disposed inside the cover 11, a lifting ring 212 disposed inside the cavity 211, a long rod 213 disposed on the lifting ring 212, and a long groove 214 opened on the lower side of the cavity 211.

[0035] The cover 11 has a cavity 211 inside, which is used to place the lifting ring 212 and provide space for the lifting ring 212 to move up and down. There are multiple sets of long rods 213 arranged in a ring array at the bottom of the lifting ring 212, which are used to control the rotation of the rotating part. In addition, there is a long groove 214 for placing the long rods 213, and when the lifting ring 212 moves up and down, the long rods 213 will simultaneously complete the up and down work inside the long groove 214.

[0036] Furthermore, the mounting part 2 also includes a control component 24, which includes a threaded rod 241 disposed inside the cavity 211, a rotating disk 242 disposed on the threaded rod 241, a storage groove 243 disposed on the rotating disk 242, and a control lever 244 disposed inside the storage groove 243.

[0037] The cavity 211 contains a threaded rod 241, the top of which extends through the cavity 211 and outwards to connect with a rotating disk 242. The rotating disk 242 drives the threaded rod 241 to rotate, and its top has a receiving groove 243, within which a control lever 244 is rotatably connected. The threaded rod 241 works in conjunction with a lifting ring 212, controlling the up-and-down movement of the lifting ring 212 through its own rotation. The control lever 244 drives the rotating disk 242 to rotate, thereby causing the threaded rod 241 to rotate synchronously.

[0038] Preferably, the rotating disk 242 is controlled to rotate by the control lever 244, which can drive the threaded rod 241 connected to it to rotate synchronously. When the threaded rod 241 rotates, it drives the lifting ring 212 to move up and down, which in turn drives the long rod 213 on the lower side of the lifting ring 212 to move up and down together. During the up and down movement of the long rod 213, it drives the rotating component 22 to rotate. After the rotating component 22 rotates, the arc groove 232 inside the fixing component 23 will squeeze the control lever 233, so that the control lever 233 drives the fixing block 234 to expand and contract within the storage slot 237. When the fixing block 234 expands, it will cooperate with the fixing ring 14 to fix the cover 11 to the top of the outer shell, and finally complete the installation operation of the cover 11.

[0039] Furthermore, the rotating component 22 includes a rotating ring 221 disposed inside the cover 11, an inclined groove 222 disposed on the rotating ring 221, and a control ball 223 disposed inside the inclined groove 222; the bottom end of the rotating ring 221 is fixedly connected to the top end of the rotating disk 231, and the control ball 223 is fixedly connected to the inner side of the long rod 213.

[0040] Among them, the rotating ring 221 is fixedly connected to the top of the rotating disk 231, and its outer wall is provided with multiple inclined grooves 222; the inner side of the long rod 213 is provided with control ball 223, and the control ball 223 is embedded in the inclined groove 222.

[0041] Preferably, when the long rod 213 moves up and down, the control ball 223 moves up and down synchronously with the long rod 213. During the process, the outer wall of the control ball 223 presses against the inclined groove 222, thereby driving the rotating ring 221 to rotate. When the rotating ring 221 rotates, it will drive the rotating disk 231 to rotate synchronously. Finally, the fixing and disassembly of the fixing component 23 is achieved through the rotation of the rotating disk 231.

[0042] Furthermore, the inside of the cover 11 is also provided with a storage slot 237 and a sliding slot 238, and there are eight sets of storage slot 237, sliding slot 238, arc-shaped slot 232, control rod 233 and fixing block 234.

[0043] The storage slot 237 is used to place the fixing block 234, providing space for the fixing block 234 to move within the slot; the translation slot 238 is used to place the control rod 233, facilitating the movement of the control rod 233 within the slot. Eight sets of components are provided for the storage slot 237, translation slot 238, arc-shaped slot 232, control rod 233, and fixing block 234, which are fixed from multiple directions of the circular cover 11 through multiple sets of components, effectively preventing air leakage caused by partial inadequate sealing of the cover 11.

[0044] In summary: First, the rotating disk 242 is controlled to rotate via the control lever 244. The rotating disk 242 then drives the threaded rod 241 to rotate synchronously. The rotation of the threaded rod 241 drives the lifting disk to move up and down, thereby causing the long rod 213 to move together with the lifting disk. When the long rod 213 moves up and down, the control ball 223 on its inner side will press the inclined groove 222 on the outer wall of the rotating ring 221, causing the rotating ring 221 to drive the rotating disk 231 to rotate synchronously. During the rotation of the rotating disk 231, the control lever 233 will be pressed through the arc groove 232, causing the control lever 233 to drive multiple fixing blocks 234 to expand and contract within the storage slot 237. When the fixing blocks 234 expand, they can fix the cover 11 to the outer shell; when they contract, they can disassemble the cover 11.

[0045] Reference Figures 2-8 As an optional embodiment, a flywheel energy storage device is provided, including a protective part 1 and a sealing part 3, which includes a sealing ring 31 disposed inside the housing 12, a groove 32 disposed at the bottom end of the sealing ring 31 and the cover 11, and a T-shaped sealing ring 33 disposed inside the groove 32.

[0046] The sealing ring 31 is located on the inner wall of the outer casing, below the fixing ring 14. Both the top of the sealing ring 31 and the bottom of the cover 11 have grooves 32, each containing a T-shaped sealing ring. When the fixing block 234 and the fixing ring 14 work together to fix the cover 11, the T-shaped sealing ring on the sealing ring 31 contacts the T-shaped sealing ring at the bottom of the cover 11, thus sealing the gap between the cover 11 and the outer casing and preventing outside air from entering the device.

[0047] Furthermore, the main body of the fixing block 234 is a cuboid, with a stepped notch 235 on the outer side of its top, and the end of the notch is transitioned by a sloping curved surface 236.

[0048] Preferably, the main body of the fixing block 234 is rectangular, with stepped notches 235 at its top and outer sides, and the notches are transitioned by inclined curved surfaces 236. During the fixing process of the cover 11, the front side of the notch will first contact the fixing ring 14 to achieve pre-fixation of the cover 11; then the fixing block 234 will further expand outward, at which time the fixing ring 14 will contact the inclined curved surface 236 of the fixing block 234, and the guiding effect of the inclined curved surface 236 will drive the entire cover 11 to move downward again and fit tightly with the outer shell; when the cover 11 moves downward, its bottom end and the two T-shaped sealing rings at the top of the sealing ring 31 will squeeze each other, thereby enhancing the overall sealing effect.

[0049] Furthermore, the protective section 1 is provided with an energy storage section 4, which includes a flywheel body 41 disposed inside the housing 12, a lower radial magnetic bearing 42 and a lower axial magnetic bearing 43 disposed on the lower side of the flywheel body 41, an upper axial magnetic bearing 44 disposed on the upper side of the flywheel body 41, a high-speed motor 45 disposed on the upper side of the upper axial magnetic bearing 44, and an upper radial magnetic bearing 46 disposed on the high-speed motor 45.

[0050] The flywheel body 41 is a core energy storage unit consisting of four components. It converts electrical energy into kinetic energy for storage through high-speed rotation and then converts the kinetic energy back into electrical energy for release during discharge. It serves as the carrier for energy storage and release. The lower radial magnetic bearing 42 and the upper radial magnetic bearing 46 work together to achieve radial positioning and stability. They suspend the flywheel body 41 by electromagnetic force, preventing the flywheel from rubbing against other components due to radial offset during rotation, reducing energy loss, and suppressing radial vibration to ensure the flywheel operates stably at high speed. The lower axial magnetic bearing 43 and the upper axial magnetic bearing 44 work together to perform axial positioning and load balancing functions. They use electromagnetic force to counteract the flywheel's own weight and the axial force generated during rotation, preventing the flywheel from moving along the axial direction (up and down), maintaining axial position stability, and avoiding axial friction and collision. The high-speed motor 45 serves as both a "motor" and a "generator." During charging, it acts as a motor, driving the flywheel to accelerate its rotation to store energy. During discharging, it acts as a generator, driven by the high-speed rotating flywheel to generate electricity, converting kinetic energy into electrical energy for output. It is the core execution component for energy conversion.

[0051] Furthermore, the protective part 1 is also provided with a leveling part 5, which includes a fixing rod 51 provided on the base 13, a mounting seat 52 provided at the bottom end of the fixing rod 51, and a leveling wheel 53 and a shim 54 provided on the outside of the fixing rod 51.

[0052] The base 13 has a leveling section 5 at its bottom, which consists of multiple fixing rods 51, mounting bases 52, leveling wheels 53, and shims 54. The bottom end of the fixing rods 51 is fixedly connected to the mounting bases 52. By rotating the leveling wheels 53, parts of the base 13 can be raised or lowered, ultimately bringing the entire base 13 to a horizontal position.

[0053] Preferably, a fixing nut (not shown in the figure) is also provided at the top of the fixing rod 51 to prevent the base 13 and the fixing rod 51 from separating.

[0054] In summary: When this flywheel energy storage device is working, the control lever 244 first rotates the rotating disk 242, which drives the threaded rod 241 to rotate, causing the lifting ring 212 and the long rod 213 to move up and down. The control ball 223 on the inner side of the long rod 213 moves with it and squeezes the inclined groove 222 of the rotating ring 221, causing the rotating ring 221 to drive the rotating disk 231 to rotate. The arc groove 232 on the rotating disk 231 squeezes the control rod 233, causing the fixed block 234 to expand and contract within the storage groove 237. When expanding, it cooperates with the fixed ring 14 to fix the cover 11; when contracting, it completes the disassembly. When the cover 11 is fixed, the notch of the fixed block 234 is pre-loaded. The device is fixed and further expanded by the guide of the inclined curved surface 236, allowing the cover 11 to move down and fit against the outer shell. The sealing ring 31 and the T-shaped sealing ring in the groove 32 at the bottom of the cover 11 squeeze each other to enhance the seal. When the high-speed motor 45 is charging and discharging, it acts as a motor and a generator respectively. It works with the magnetic bearing to suspend the flywheel body 41 to realize the conversion, storage and release of electrical energy and kinetic energy. The leveling part 5 can adjust the base 13 to a horizontal position by rotating the leveling wheel 53, with the help of the fixing rod 51, the mounting seat 52, etc. The fixing nut prevents the base 13 from separating from the fixing rod 51. All components work together to complete the installation, fixing, sealing, energy conversion and leveling of the device.

[0055] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A flywheel energy storage device, characterized in that: include, A protective part (1), a mounting part (2) provided on the protective part (1), and a sealing part (3) provided on the mounting part (2); The mounting part (2) includes a lifting member (21), a rotating member (22) disposed on the lifting member (21), and a fixing member (23) disposed on the rotating member (22); The fixing component (23) includes a rotating disk (231), an arc-shaped groove (232) disposed on the rotating disk (231), a control rod (233) disposed inside the arc-shaped groove (232), and a fixing block (234) disposed on the control rod (233).

2. The flywheel energy storage device according to claim 1, characterized in that: The main body of the fixing block (234) is a cuboid, with a stepped notch (235) on the outer side of its top, and the end of the notch is transitioned by a sloping curved surface (236).

3. The flywheel energy storage device according to claim 2, characterized in that: The protective part (1) includes a cover (11), a housing (12) disposed on the cover (11), a base (13) disposed on the lower side of the housing (12), and a fixing ring (14) disposed inside the housing (12).

4. The flywheel energy storage device according to claim 3, characterized in that: The lifting component (21) includes a cavity (211) disposed inside the cover (11), a lifting ring (212) disposed inside the cavity (211), a long rod (213) disposed on the lifting ring (212), and a long groove (214) opened on the lower side of the cavity (211).

5. The flywheel energy storage device according to claim 4, characterized in that: The rotating component (22) includes a rotating ring (221) disposed inside the cover (11), an inclined groove (222) disposed on the rotating ring (221), and a control ball (223) disposed inside the inclined groove (222); The bottom end of the rotating ring (221) is fixedly connected to the top end of the rotating disk (231), and the control ball (223) is fixedly connected to the inside of the long rod (213).

6. The flywheel energy storage device according to claim 5, characterized in that: The cover (11) is also provided with a storage slot (237) and a translation slot (238) inside, and the storage slot (237), translation slot (238), arc slot (232), control rod (233) and fixing block (234) are all provided in eight sets.

7. The flywheel energy storage device according to claim 6, characterized in that: The protective part (1) is also provided with a sealing part (3), which includes a sealing ring (31) disposed inside the housing (12), a groove (32) disposed at the bottom end of the sealing ring (31) and the cover (11), and a T-shaped sealing ring (33) disposed inside the groove (32).

8. The flywheel energy storage device according to claim 7, characterized in that: The protective part (1) is provided with an energy storage part (4), which includes a flywheel body (41) disposed inside the housing (12), a lower radial magnetic bearing (42) and a lower axial magnetic bearing (43) disposed on the lower side of the flywheel body (41), an upper axial magnetic bearing (44) disposed on the upper side of the flywheel body (41), a high-speed motor (45) disposed on the upper side of the upper axial magnetic bearing (44), and an upper radial magnetic bearing (46) disposed on the high-speed motor (45).

9. The flywheel energy storage device according to claim 8, characterized in that: The mounting part (2) further includes a control component (24), which includes a threaded rod (241) disposed inside the cavity (211), a rotating disk (242) disposed on the threaded rod (241), a storage groove (243) disposed on the rotating disk (242), and a control lever (244) disposed inside the storage groove (243).

10. The flywheel energy storage device according to claim 9, characterized in that: The protective part (1) is also provided with a leveling part (5), which includes a fixing rod (51) on the base (13), a mounting seat (52) at the bottom of the fixing rod (51), and a leveling wheel (53) and a shim (54) on the outside of the fixing rod (51).

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