An eddy current brake mechanism and a flywheel energy storage motor thereof

Abstract

The utility model relates to the flywheel energy storage motor technical field, concretely relates to a kind of electric eddy current brake mechanism and its flywheel energy storage motor, the electric eddy current brake mechanism includes stator assembly and relay mechanism, each stator assembly is connected with peripheral support structure and is stable, not easy to move relatively, can effectively avoid the situation that braking torque is influenced due to brake mechanism and peripheral support structure move relatively, braking torque is larger, ensure braking effect, simultaneously, the quantity of stator assembly can be adjusted, to form different shape structure, braking effect electric eddy current brake mechanism, can adjust excitation current in winding coil according to actual situation, linearly regulate braking torque, realize the speed grading of braking process, accurate control, realize the further optimization of braking effect;The flywheel energy storage motor uses the electric eddy current brake mechanism, braking torque is larger, can safely, stably brake flywheel rotor under rated speed operation to safety speed until shutdown in very short time.

Description

Technical Field

[0001] This utility model relates to the field of flywheel energy storage motor technology, specifically to an eddy current braking mechanism and its flywheel energy storage motor. Background Technology

[0002] When a flywheel energy storage motor operates at high speed and high energy, if any system such as the bearing system, motor control system, temperature, or vacuum malfunctions or other emergencies occur, the flywheel rotor needs to be braked safely and smoothly from its rated speed to a safe speed and eventually stopped within a very short time. Chinese invention patent application CN115765301A discloses an eddy current braking device for a flywheel energy storage motor and a flywheel energy storage motor. Its braking module includes ferromagnetic blocks and excitation windings. The excitation windings are wound around the ferromagnetic blocks, or the excitation windings are arranged between the ferromagnetic blocks. The ferromagnetic blocks are evenly arranged along the circumference of the flywheel, and there are gaps between adjacent ferromagnetic blocks or gaps on each ferromagnetic block. The inner surface of each ferromagnetic block forms an air gap with the outer surface of the flywheel, and the outer surface of each ferromagnetic block contacts the inner surface of the housing. This allows for emergency braking of the flywheel in the event of a sudden situation, improving the safety of the system operation.

[0003] However, the braking module and the flywheel energy storage motor housing are not easy to make stable contact. Without a connection mechanism, the braking module is prone to relative movement with the housing, affecting the braking torque and failing to meet the requirement of emergency braking to a safe stop in a very short time. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing flywheel energy storage motors, such as the difficulty in installing and fixing the braking module inside the housing, which affects the braking torque and fails to meet the requirements of emergency braking to safe stop in a very short time. This invention provides an eddy current braking mechanism and its flywheel energy storage motor.

[0005] In a first aspect, this utility model provides an eddy current braking mechanism, including a stator assembly and a switching mechanism.

[0006] Several stator assemblies are distributed around a central axis to form a braking space. Each stator assembly includes a stator core on which winding coils are disposed. The adapter mechanism is detachably connected to one or both ends of the stator assembly along the central axis, and the adapter mechanism can be detachably connected to the external support structure.

[0007] This utility model discloses an eddy current braking mechanism, which forms a braking space by multiple independent stator components. Each stator component can be stably connected to the outer support structure through a transfer mechanism. The stable connection between each stator component and the outer support structure prevents relative movement and effectively avoids the braking torque being affected by relative movement between the braking mechanism and the outer support structure. The braking torque is large, ensuring the braking effect. At the same time, the number of stator components can be adjusted according to the actual situation to form eddy current braking mechanisms with different shapes and braking effects. In addition, each independently set stator component is equipped with a winding coil, and the excitation current in the winding coil can be adjusted according to the actual situation to linearly adjust the braking torque, realize speed gradation and precise control during the braking process, and further optimize the braking effect.

[0008] Preferably, the stator core includes a yoke and a connecting part, the yoke is provided with the winding coil, and the connecting part is detachably connected to the adapter mechanism.

[0009] Preferably, the adapter mechanism includes an insulating plate, a clamping plate, and a fixing plate. The insulating plate is respectively provided at both ends of the stator core along the central axis. Each insulating plate is connected to the clamping plate. The fixing plate is connected to the clamping plate. The fixing plate partially extends out of the outer edge of the stator assembly. The fixing plate is provided with a plurality of fixing holes.

[0010] Preferably, the stator core includes two connecting portions, which are symmetrically arranged on both sides of the magnetic yoke. The insulating plate overlaps the two connecting portions, and each connecting portion is respectively clamped to the clamping plate. The projection of the fixing plate on the stator core covers the outer edge of the stator core.

[0011] Preferably, the two clamping plates arranged opposite each other along the central axis are detachably connected by a number of tie rods. The stator core, the insulating plate and the clamping plates are respectively provided with through holes adapted to the tie rods. The clamping plates and the fixing plates are respectively provided with a number of connecting holes, and the connecting holes are offset from the through holes.

[0012] In a second aspect, the present invention provides a flywheel energy storage motor, including a support housing, a flywheel rotor, and an eddy current braking mechanism as described above. The flywheel rotor is provided with a central rotating shaft, and the flywheel rotor is arranged in the braking space with the central rotating shaft coinciding with the central axis. The connecting mechanism is detachably connected to the support housing, and an air gap is formed between the flywheel rotor and the stator assembly.

[0013] The flywheel energy storage motor of this utility model adopts the above-mentioned eddy current braking mechanism, which has a large braking torque. It can safely and stably brake the flywheel rotor running at rated speed to a safe speed and stop in a very short time. Furthermore, it can linearly adjust the braking torque by changing the excitation current, so as to achieve speed gradation and precise control during the braking process.

[0014] Preferably, the flywheel rotor includes a brake disc and a flywheel disc arranged coaxially, the brake disc and the flywheel disc being spaced apart along the axial direction, an air gap being formed between the brake disc and the stator assembly, and the flywheel disc being spaced apart from the stator assembly along the axial direction.

[0015] Preferably, a conductive layer is provided on the outer surface of the brake disc.

[0016] Preferably, the flywheel is mounted on one side of the brake disc along the axial direction, and the disc motor is mounted on the other side.

[0017] Preferably, the support housing includes an outer shell, an upper cover plate, and a lower cover plate. The upper cover plate and the lower cover plate are detachably connected to the outer shell. The outer shell is provided with a cavity adapted to the stator assembly. The outer shell is provided with a limiting step. A plurality of the stator assemblies are connected to the limiting step through the adapter mechanism. The upper cover plate and the lower cover plate are embedded with bearings that cooperate with the central rotating shaft.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides an eddy current braking mechanism, which forms a braking space by enclosing multiple independent stator components. Each stator component can be stably connected to the outer support structure through a transfer mechanism. The connection between each stator component and the outer support structure is stable and does not easily cause relative movement. This can effectively avoid the situation where the braking torque is affected by the relative movement between the braking mechanism and the outer support structure. The braking torque is large, ensuring the braking effect. 2. This utility model provides an eddy current braking mechanism, which forms a braking space by enclosing multiple independent stator components. The number of stator components can be adjusted according to the actual situation to form eddy current braking mechanisms with different shapes and structures and braking effects. 3. This utility model provides an eddy current braking mechanism, which has winding coils set in each independently set stator assembly. The excitation current in the winding coils can be adjusted according to the actual situation, and the braking torque can be linearly adjusted to realize speed gradation and precise control in the braking process, thereby further optimizing the braking effect. 4. This utility model provides a flywheel energy storage motor. By adopting the above-mentioned eddy current braking mechanism, the braking torque is large, which can safely and stably brake the flywheel rotor running at rated speed to a safe speed and stop the machine in a very short time. 5. This utility model provides a flywheel energy storage motor. By adopting the above-mentioned eddy current braking mechanism, the braking torque can be linearly adjusted by changing the excitation current, thereby achieving speed gradation and precise control during the braking process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the combined structure of the stator assembly and the adapter mechanism described in Embodiment 1.

[0020] Figure 2 This is a schematic diagram of the structure of an eddy current braking mechanism (with the fixed plate and part of the clamping plate removed) according to Embodiment 1.

[0021] Figure 3 This is an axonometric view of an eddy current braking mechanism according to Embodiment 1.

[0022] Figure 4 This is a bottom view of an eddy current braking mechanism according to Embodiment 1.

[0023] Figure 5 This is a top view of an eddy current braking mechanism according to Embodiment 1.

[0024] Figure 6 This is a schematic diagram of a flywheel energy storage motor according to Example 2.

[0025] Figure 7 for Figure 6 A schematic diagram of the structure of section AA in the middle.

[0026] Figure 8 for Figure 6 A schematic diagram of the structure of the BB cross section.

[0027] Figure 9 for Figure 8 A schematic diagram of the structure of the CC section.

[0028] Figure 10 This is a schematic diagram of the flywheel rotor described in Example 2.

[0029] Marked in the image: 1-Stator assembly, 11-Stator core, 111-Yoke, 112-Connector, 12-Winding coil 2-Adapter mechanism, 21-Insulating plate, 22-Clamping plate, 23-Fixing plate, 24-Fixing hole, 25-Through hole, 26-Connecting hole 3-Braking space, 4-Pull rod, 5-Supporting shell, 51-Outer shell, 52-Upper cover plate, 53-Lower cover plate, 54-Cavity, 55-Limiting step, 6-Flywheel rotor, 61-Central shaft, 62-Brake disc, 63-Flywheel disc, 64-Conductive layer 7-Disc motor, 8-Air gap, 9-Bearing. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1 like Figures 1-5 As shown, an eddy current braking mechanism includes a stator assembly 1 and a transfer mechanism 2. Several stator assemblies 1 are arranged around a central axis to form a braking space 3. The stator assembly 1 includes a stator core 11, on which a winding coil 12 is arranged. The transfer mechanism 2 is detachably connected to one or both ends of the stator assembly 1 along the central axis. The transfer mechanism 2 can be detachably connected to the external support structure.

[0037] The adapter mechanism 2 is used to stably connect the stator assembly 1 to the outer support structure, establishing a connection mechanism between the stator assembly 1 and the outer support structure, so that several stator assemblies 1 enclose a stable braking space 3. Taking the flywheel rotor 6 set in the braking space 3 as an example, the flywheel rotor 6 and each stator assembly 1 form a stable and uniform air gap 8. When DC current is passed through the winding coil 12, a constant electromagnetic field can be generated between the stator assembly 1 and the flywheel rotor 6. The high-speed rotating flywheel rotor 6 continuously cuts the magnetic field lines generated by the winding coil 12. According to the law of electromagnetic induction, when a conductor moves in a magnetic field and cuts magnetic field lines, a closed induced current will be induced inside it. This current circulates in an eddy current shape inside the conductor, i.e., an eddy current. The eddy current will be subjected to the Ampere force in the magnetic field. According to Lenz's law, the direction of the Ampere force is always opposite to the rotation direction of the flywheel rotor 6, thereby forming a braking torque that opposes the rotation of the flywheel rotor 6, realizing the rapid and safe braking of the flywheel rotor 6, and meeting the requirement that the flywheel rotor 6 needs to be braked to a safe stop in a very short time.

[0038] In an optional embodiment, the number of stator assemblies 1 can be an even number, such as two, four, six, or eight, so that multiple independent stator assemblies 1 can be symmetrically and evenly distributed around the central axis to form a stable braking space 3.

[0039] In an optional embodiment, the stator assembly 1 consists of a stator core 11 and a winding coil 12. The stator core 11 can be an iron core. The side of the stator core 11 near the central axis can be set as an arc surface. After multiple stator cores 11 are symmetrically and evenly distributed around the central axis, a circular braking space 3 can be formed, which can adapt to the rotation characteristics of the flywheel rotor 6 and form a stable annular air gap 8 around the flywheel rotor 6, which can realize the emergency braking of the flywheel rotor 6.

[0040] In an optional embodiment, the stator core 11 may include a yoke 111 and a connecting part 112. The yoke 111 is provided with a winding coil 12, and the connecting part 112 is detachably connected to the adapter mechanism 2. The adapter mechanism 2 is connected to the connecting part 112 and is separately arranged from the winding coil 12. This allows the winding coil 12 to concentrate in the corresponding area of ​​the yoke 111 after a direct current is applied, forming an electromagnetic field that ensures braking torque and braking effect. Simultaneously, the connecting part 112 facilitates the installation of the adapter mechanism 2, thereby ensuring the stable installation of the stator assembly 1.

[0041] In an optional implementation, the number of turns of the winding coil 12 can be designed in advance according to the braking torque to ensure that the eddy current braking mechanism meets the emergency braking of the corresponding flywheel rotor 6.

[0042] In one or more embodiments, the adapter 2 includes an insulating plate 21, a clamping plate 22 and a fixing plate 23. The stator core 11 is provided with an insulating plate 21 at both ends along the central axis. Each insulating plate 21 is connected to the clamping plate 22. The fixing plate 23 is connected to the clamping plate 22. The fixing plate 23 extends partially out of the outer edge of the stator assembly 1. The fixing plate 23 is provided with a plurality of fixing holes 24.

[0043] In an optional embodiment, the insulating plate 21 is disposed between the stator core 11 and the clamping plate 22 to provide insulation, thereby enabling each stator assembly 1 to be installed independently and generate an electromagnetic field.

[0044] In an optional embodiment, the insulating plate 21 can cover both ends of the stator core 11 along the axial direction to ensure the independent installation and function of each stator assembly 1.

[0045] In an optional embodiment, the clamping plate 22 is used to be disposed between the insulating plate 21 and the fixing plate 23 to limit the position of the insulating plate 21 and to strengthen the structure of the associated part, so that the transfer mechanism 2 can stably achieve a stable connection between the stator assembly 1 and the peripheral support structure.

[0046] In an optional embodiment, the clamping plate 22 may be in the form of a flat plate and may be partially attached to the insulating plate 21 at the top and bottom of the stator core 11 along the axial direction.

[0047] In an optional embodiment, the clamping plate 22 can also be a plate-shaped structural component with grooves. It can be held in place at the corner of the stator core 11 through the grooves to strengthen the structure of the stator core 11 and the insulating plate 21. It can be connected to the end wall and side wall of the stator core 11 by bolts, screws, etc. to ensure connection stability.

[0048] In an optional embodiment, the fixing plate 23 may be in the shape of a flat plate. The fixing plate 23 is partially connected to the clamping plate 22, and partially extends out of the stator core 11 and is provided with fixing holes 24. Through the fixing holes 24 and the cooperation with the external support mechanism, the stator assembly 1 can be stably installed.

[0049] In an optional embodiment, the shape of the connecting portion 112 can be adjusted according to the actual situation, and the cross-section can be rectangular, arc-shaped, or other suitable shapes, such as... Figures 2-5 As shown, four stator assemblies 1 are arranged around a central axis, and the connecting part 112 of the stator core 11 of each stator assembly 1 can be configured to be partially cubic.

[0050] In one or more embodiments, the stator core 11 includes two connecting portions 112, which are symmetrically arranged on both sides of the magnetic yoke 111. An insulating plate 21 overlaps the two connecting portions 112, and each connecting portion 112 is respectively clamped with a clamping plate 22. The projection of a fixing plate 23 on the stator core 11 covers the outer edge of the stator core 11, thus stabilizing the insulating plate 21. The clamping plate 22 assists in strengthening the upper and lower corner areas of the stator core 11 at the corresponding positions of the insulating plate 21. The fixing plate 23 is partially connected to the clamping plate 22 and partially extends beyond the outer edge of the stator core 11 to connect with the external support mechanism.

[0051] In an optional embodiment, the magnetic yoke 111 may be provided with a thickness less than that of the connecting portions 112 on both sides, and the winding coil 12 may be wound longitudinally around the magnetic yoke 111 along the central axis. The winding coils 12 of the multiple stator assemblies 1 are led out by wires for separate energization operations, so that the winding coil 12 can be limited by the local thinning of the connecting portion 112 and the magnetic yoke 111, ensuring the stability of the setting position of the winding coil 12.

[0052] In optional embodiments, the insulating plate 21 and the stator core 11 can be bonded together or bolted together, the insulating plate 21 and the clamping plate 22 can be bonded together or bolted together, and the clamping plate 22 and the fixing plate 23 are preferably bolted together.

[0053] In an optional embodiment, the stator core 11, the insulating plate 21, and the clamping plate are each provided with a plurality of through holes 25 arranged along the central axis. A tie rod 4 can be inserted into each through hole 25. The two clamping plates 22 arranged opposite to each other along the central axis are detachably connected by the tie rod 4, so that the stator core 11 has high structural strength and can maintain a stable position. At the same time, the clamping plate and the fixing plate 23 are provided with a plurality of connecting holes 26. The connecting holes 26 are staggered with the through holes 25, and the clamping plate and the fixing plate 23 can be detachably connected by conventional connecting parts such as bolts inserted into the connecting holes 26.

[0054] In an optional embodiment, the fixing plate 23 is preferably only provided at one end of the stator core 11 along the axial direction to facilitate quick connection between the stator assembly 1 and the peripheral support structure.

[0055] This embodiment of an eddy current braking mechanism uses multiple independent stator components 1 to form a braking space 3. Each stator component 1 can be stably connected to the outer support structure through a transfer mechanism 2. The connection between each stator component 1 and the outer support structure is stable and not prone to relative movement, which can effectively avoid the braking torque being affected by the relative movement between the braking mechanism and the outer support structure. The braking torque is large, ensuring the braking effect. At the same time, the number of stator components 1 can be adjusted according to the actual situation to form eddy current braking mechanisms with different shapes and braking effects. In addition, each independently set stator component 1 is equipped with a winding coil 12, which can adjust the excitation current in the winding coil 12 according to the actual situation to linearly adjust the braking torque, realize speed gradation and precise control in the braking process, and further optimize the braking effect.

[0056] Example 2 like Figures 1-10 As shown, a flywheel energy storage motor includes a support housing 5, a flywheel rotor 6, and an eddy current braking mechanism as described in Embodiment 1. The flywheel rotor 6 is provided with a central rotating shaft 61. The flywheel rotor 6 is arranged in the braking space 3 with the central rotating shaft 61 coinciding with the central axis. The adapter mechanism 2 is detachably connected to the support housing 5, and an air gap 8 is formed between the flywheel rotor 6 and the stator assembly 1.

[0057] The support housing 5 serves as the outer support structure of the eddy current braking mechanism, enabling the transfer mechanism 2 of the eddy current braking mechanism to stably connect the support housing 5 and the stator assembly 1. The flywheel rotor 6 is set in the braking space 3, forming a uniform annular air gap 8 between the flywheel rotor 6 and the stator assembly 1. After DC current is applied to the winding coil 12 of the eddy current braking mechanism, emergency braking of the flywheel rotor 6 is achieved. The braking response is rapid, and the braking torque is large. It can safely and stably brake the flywheel rotor 6, which is running at the rated speed, to a safe speed and even stop the machine in a very short time, with high efficiency.

[0058] In an optional embodiment, the flywheel rotor 6 includes a brake disc 62 and a flywheel disc 63 coaxially arranged. The brake disc 62 and the flywheel disc 63 are spaced apart along the axial direction. An air gap 8 is formed between the brake disc 62 and the stator assembly 1, and the flywheel disc 63 is spaced apart from the stator assembly 1 along the axial direction. This independent arrangement of the flywheel disc 63 and the brake disc 62 facilitates manufacturing, and the eddy current braking mechanism centrally brakes the brake disc 62, indirectly achieving braking of the flywheel disc 63 through the braking effect of the brake disc 62.

[0059] In an optional embodiment, the central rotating shaft 61, the brake disc 62, and the flywheel disc 63 can be integrally machined structural parts, or they can be machined separately and then assembled.

[0060] In an optional embodiment, a conductive layer 64 is provided on the outer surface of the brake disc 62. The conductive layer 64 may be a structural layer with better conductivity than the material of the brake disc 62, such as a copper layer or an aluminum layer plated on the outer surface of the brake disc 62, in order to further improve the braking torque and realize the emergency braking of the flywheel rotor 6.

[0061] In an optional embodiment, a flywheel disk 63 is mounted on one side of the brake disc 62 along the axial direction, and a disc motor 7 is mounted on the other side. This forms a flywheel energy storage motor with a simple structure. The brake disc 62 can be integrally machined with the central rotating shaft 61 and have a conductive layer 64 applied before being assembled with the flywheel disk 63 and the disc motor 7, which facilitates the fabrication of the flywheel energy storage motor.

[0062] In an optional embodiment, the support housing 5 includes an outer shell 51, an upper cover plate 52, and a lower cover plate 53. The upper cover plate 52 and the lower cover plate 53 are detachably connected to the outer shell 51. The outer shell 51 is provided with a cavity 54 adapted to the stator assembly 1. The outer shell 51 is provided with a limiting step 55. Several stator assemblies 1 are connected to the limiting step 55 through a transition mechanism 2. The upper cover plate 52 and the lower cover plate 53 are embedded with bearings 9 that cooperate with the central rotating shaft 61.

[0063] In optional implementations, such as Figure 9 As shown, the cavity 54 inside the outer shell 51 is adapted to the stator assembly 1, which not only provides an installation position for each independent stator assembly 1, but also limits the position of the stator assembly 1 by its shape, preventing the stator assembly 1 from moving circumferentially during use. At the same time, the limiting step 55 inside the outer shell 51 provides a suitable installation position for the adapter mechanism 2.

[0064] The flywheel energy storage motor of this embodiment adopts the above-mentioned eddy current braking mechanism, which has a large braking torque. It can safely and stably brake the flywheel rotor 6 running at rated speed to a safe speed and stop in a very short time. Moreover, it can linearly adjust the braking torque by changing the excitation current to achieve speed gradation and precise control during the braking process.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An eddy current braking mechanism, characterized in that, Includes a stator assembly (1) and a transition mechanism (2), Several stator assemblies (1) are arranged around a central axis to form a braking space (3). The stator assembly (1) includes a stator core (11) and a winding coil (12) is provided on the stator core (11). The adapter (2) is detachably connected to one or both ends of the stator assembly (1) along the central axis, and the adapter (2) is detachably connected to the peripheral support structure.

2. The eddy current braking mechanism according to claim 1, characterized in that, The stator core (11) includes a yoke (111) and a connecting part (112). The yoke (111) is provided with the winding coil (12), and the connecting part (112) is detachably connected to the adapter (2).

3. The eddy current braking mechanism according to claim 2, characterized in that, The adapter (2) includes an insulating plate (21), a clamping plate (22) and a fixing plate (23). The insulating plate (21) is provided at both ends of the stator core (11) along the central axis. Each insulating plate (21) is connected to the clamping plate (22). The fixing plate (23) is connected to the clamping plate (22). The fixing plate (23) extends partially out of the outer edge of the stator assembly (1). The fixing plate (23) is provided with a plurality of fixing holes (24).

4. The eddy current braking mechanism according to claim 3, characterized in that, The stator core (11) includes two connecting parts (112), which are symmetrically arranged on both sides of the magnetic yoke (111). The insulating plate (21) overlaps the two connecting parts (112), and each connecting part (112) is respectively clamped to the clamping plate (22). The projection of the fixing plate (23) on the stator core (11) covers the outer edge of the stator core (11).

5. An eddy current braking mechanism according to claim 4, characterized in that, The two clamping plates (22) arranged opposite each other along the central axis are detachably connected by several tie rods (4). The stator core (11), the insulating plate (21) and the clamping plate (22) are respectively provided with through holes (25) adapted to the tie rods (4). The clamping plate (22) and the fixing plate (23) are respectively provided with several connecting holes (26). The connecting holes (26) and the through holes (25) are misaligned.

6. A flywheel energy storage motor, characterized in that, The device includes a support housing (5), a flywheel rotor (6), and an eddy current braking mechanism as described in any one of claims 1-5. The flywheel rotor (6) is provided with a central rotating shaft (61). The flywheel rotor (6) is arranged in the braking space (3) with the central rotating shaft (61) coinciding with the central axis. The adapter (2) is detachably connected to the support housing (5). An air gap (8) is formed between the flywheel rotor (6) and the stator assembly (1).

7. A flywheel energy storage motor according to claim 6, characterized in that, The flywheel rotor (6) includes a brake disc (62) and a flywheel disc (63) arranged coaxially. The brake disc (62) and the flywheel disc (63) are spaced apart along the axial direction. An air gap (8) is formed between the brake disc (62) and the stator assembly (1). The flywheel disc (63) and the stator assembly (1) are spaced apart along the axial direction.

8. A flywheel energy storage motor according to claim 7, characterized in that, A conductive layer (64) is provided on the outer surface of the brake disc (62).

9. A flywheel energy storage motor according to claim 7, characterized in that, The flywheel disc (63) is mounted on one side of the brake disc (62) along the axial direction, and the disc motor (7) is mounted on the other side.

10. A flywheel energy storage motor according to claim 7, characterized in that, The supporting housing (5) includes an outer shell (51), an upper cover plate (52), and a lower cover plate (53). The upper cover plate (52) and the lower cover plate (53) are detachably connected to the outer shell (51). The outer shell (51) is provided with a cavity (54) adapted to the stator assembly (1). The outer shell (51) is provided with a limiting step (55). A plurality of the stator assemblies (1) are connected to the limiting step (55) through the adapter mechanism (2). The upper cover plate (52) and the lower cover plate (53) are embedded with bearings (9) that cooperate with the central rotating shaft (61).

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