Flywheel energy storage device and control method for flywheel energy storage device

Abstract

This invention discloses a flywheel energy storage device and a control method for the flywheel energy storage device. The flywheel energy storage device includes: a rotor; a detection component, which is sleeved on the outside of the rotor and is used to detect whether the rotor's axis is offset; and an adjustment component, which drives the detection component to move along the radial direction of the rotor. The driving cooperation between the adjustment component and the detection component, allowing the adjustment component to drive the detection component to move along the radial direction of the rotor, reduces processing costs and improves processing efficiency. Furthermore, it ensures that the flywheel energy storage device has real-time attitude adjustment capability, thus improving its adaptive attitude adjustment capability.

Description

Technical Field

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

[0002] In related technologies, the stator is fixed on the main housing, and the detection component is fixed on the inner housing. There are two detection components, located at the upper and lower ends of the main housing. The detection components are fixed after the flywheel energy storage device is assembled, and if adjustment is required, they need to be disassembled and reassembled.

[0003] However, existing flywheel energy storage devices also have significant drawbacks: low processing and production efficiency, relatively high processing costs, and the inability to adjust attitude in real time. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a flywheel energy storage device that can reduce processing costs, improve processing efficiency, and ensure that the flywheel energy storage device has real-time attitude adjustment capability, thereby improving the adaptive attitude adjustment capability of the flywheel energy storage device.

[0005] The present invention further proposes a control method for a flywheel energy storage device.

[0006] The flywheel energy storage device according to the present invention includes: a rotor; a detection component, the detection component being sleeved on the outside of the rotor, the detection component being used to detect whether the axis of the rotor is offset; and an adjustment component, the adjustment component being driven to cooperate with the detection component, the adjustment component being capable of driving the detection component to move along the radial direction of the rotor.

[0007] According to the flywheel energy storage device of the present invention, the adjustment component and the detection component are driven to cooperate. The adjustment component can drive the detection component to move along the radial direction of the rotor. This can reduce processing costs and improve processing efficiency. In addition, it can ensure that the flywheel energy storage device has real-time attitude adjustment capability and improve the adaptive attitude adjustment capability of the flywheel energy storage device.

[0008] In some examples of the present invention, the adjustment component includes a drive member disposed radially outside the rotor, and the drive member is capable of driving the detection component to move.

[0009] In some examples of the invention, the adjustment assembly further includes a fixing member, wherein at least a portion of the detection assembly is located between the drive member and the fixing member in the axial direction of the rotor, the fixing member selectively securing the detection assembly toward the drive member.

[0010] In some examples of the present invention, the detection component includes a detection element located between the drive element and the rotor in the radial direction of the rotor, the drive element drivingly engaging with the detection element.

[0011] In some examples of the present invention, the flywheel energy storage device further includes: an inner housing, wherein the detection element is located between the inner housing and the rotor in the radial direction of the rotor, and at least a portion of the inner housing is disposed in contact with the detection element, and the drive element is driven to cooperate with the inner housing.

[0012] In some examples of the present invention, the detection element includes: a first abutting portion and a second abutting portion, the first abutting portion being connected to the second abutting portion; the inner housing includes: a third abutting portion and a fourth abutting portion, the third abutting portion being connected to the fourth abutting portion; in the radial direction of the rotor, the first abutting portion abuts against the third abutting portion, and the second abutting portion abuts against the fourth abutting portion.

[0013] In some embodiments of the present invention, the flywheel energy storage device further includes: an outer casing, the outer casing being fitted over the outside of the detection component, and the drive component being disposed inside the outer casing.

[0014] The control method of the flywheel energy storage device according to the present invention includes: a detection element detecting whether the axis of the rotor is offset; if so, a driving element driving the detection element to move along the radial direction of the rotor; if not, a fixing element tightly fixing the inner shell.

[0015] In some examples of the present invention, the step of driving the detection element to move along the radial direction of the rotor when the statement is true includes: the driving element entering a stable driving state; the fixing element changing from a tightly fixed inner housing state to a loosely fixed inner housing state; the driving element driving the inner housing to move, and the inner housing driving the detection element to move along the radial direction of the rotor.

[0016] In some examples of the present invention, after the step of the driving member driving the inner housing to move and the inner housing driving the detection member to move along the radial direction of the rotor, the method further includes: the detection member detecting again whether the axis of the rotor is offset; if yes, the driving member continues to drive the inner housing to move; if no, the fixing member tightly fixes the inner housing.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a cross-sectional view of a flywheel energy storage device according to an embodiment of the present invention; Figure 2 This is a block diagram of a control method for a flywheel energy storage device according to another embodiment of the present invention.

[0019] Figure label: 1. Flywheel energy storage device; 10. Rotor; 100. First rotating part; 101. Second rotating part; 20. Detection assembly; 200. Inner housing; 201. Detection component; 202. First abutting part; 203. Second abutting part; 204. Third abutting part; 205. Fourth abutting part; 30. Adjustment assembly; 300. Outer housing; 301. Drive component; 302. Fixing component; 40. Main housing; 50. Stator. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0021] The following is for reference. Figure 1 and Figure 2 A flywheel energy storage device 1 according to an embodiment of the present invention is described.

[0022] like Figure 1 As shown, the flywheel energy storage device 1 according to an embodiment of the present invention includes: a rotor 10, a detection component 20, and an adjustment component 30. The rotor 10 can realize bidirectional conversion between electrical energy and mechanical energy. The detection component 20 can perform a detection function, which can be used to detect whether the axis of the rotor 10 is aligned with the axis of the stator 50. The adjustment component 30 can perform an adjustment function, which can be used to adjust the position of the detection component 20.

[0023] like Figure 1 As shown, the detection component 20 is sleeved on the outside of the rotor 10. The detection component 20 is used to detect whether the axis of the rotor 10 is offset. The adjustment component 30 is driven to cooperate with the detection component 20. The adjustment component 30 can drive the detection component 20 to move in the radial direction of the rotor 10.

[0024] The detection component 20 is sleeved on the outside of the rotor 10. At this time, the arrangement of the detection component 20 and the rotor 10 is more in line with the actual working conditions. The detection component 20 can be used to detect whether the axis of the rotor 10 is offset. That is, the detection component 20 can be used to detect whether the axis of the rotor 10 is aligned with the axis of the stator 50. The adjustment component 30 drives the detection component 20 to move along the radial direction of the rotor 10. That is, when the detection component 20 detects that the axis of the rotor 10 is offset, the adjustment component 30 can drive the detection component 20 to move along the radial direction of the rotor 10. At this time, the coaxiality of the flywheel energy storage device 1 can be guaranteed without relying on high-precision machining and assembly, and no manual disassembly and adjustment is required. This can reduce machining costs and improve machining efficiency. In addition, it can ensure that the flywheel energy storage device 1 has real-time attitude adjustment capability and improve the adaptive attitude adjustment capability of the flywheel energy storage device 1.

[0025] It should be noted that when the axis of rotor 10 is offset, since the axis of detection component 20 is not consistent with that of rotor 10, adjustment component 30 needs to provide additional control force to share the eccentric force caused by the axis inconsistency. Adjustment component 30 needs to continuously provide force. After adjustment component 30 finishes adjustment and stops working, detection component 20 controls rotor 10, and adjustment component 30 does not need to continuously provide force. In this way, while improving the axis consistency of flywheel energy storage device 1, control power consumption can be reduced.

[0026] Therefore, the adjustment component 30 and the detection component 20 are driven to cooperate, and the adjustment component 30 can drive the detection component 20 to move in the radial direction of the rotor 10. This can reduce processing costs and improve processing efficiency. In addition, it can ensure that the flywheel energy storage device 1 has real-time attitude adjustment capability and improve the adaptive attitude adjustment capability of the flywheel energy storage device 1.

[0027] Specifically, such as Figure 1 As shown, the adjustment component 30 includes a drive component 301, which is located radially outward of the rotor 10 and can drive the detection component 20 to move. The drive component 301 provides a driving function. Specifically, when the detection component 20 detects a deviation in the axis of the rotor 10, the drive component 301 can drive the detection component 20 to move radially along the rotor 10. This ensures the coaxiality of the flywheel energy storage device 1 without relying on high-precision machining and assembly. It should be noted that the drive component 301 can be configured as a magnetic levitation bearing, a motor drive, a pneumatic drive, or a hydraulic drive, etc. Motor drives and hydraulic drives have relatively high structural rigidity, while pneumatic drives have relatively high flexibility. Preferably, the drive component 301 is configured as a magnetic levitation bearing.

[0028] Among them, such as Figure 1 As shown, the adjustment assembly 30 also includes a fixing member 302, in the axial direction of the rotor 10, at least part of the detection assembly 20 is located between the drive member 301 and the fixing member 302, and the fixing member 302 selectively fastens the detection assembly 20 in the direction of the drive member 301.

[0029] The fixing member 302 serves a fixing function, used to securely fasten the detection component 20. At least a portion of the detection component 20 is positioned between the driving member 301 and the fixing member 302 in the axial direction of the rotor 10. In this configuration, the detection component 20 can perform the most direct and accurate detection of the rotor 10. The driving member 301 can drive the detection component 20 to move radially along the rotor 10. Furthermore, this optimizes the spatial layout, making the overall structure more compact and achieving high integration. The fixing member 302 selectively fastens the detection component 20 towards the driving member 301. Specifically, when the detection... When component 20 detects a deviation in the axis of rotor 10, the fixing member 302 can switch from a tightly fixed state to a loosely fixed state. At this time, the driving member 301 can drive the detection component 20 to move in the radial direction of rotor 10, which can reduce the deviation of the detection component 20. When the detection component 20 detects that the axis of rotor 10 has not deviated, the fixing member 302 can tightly fix the detection component 20 in the direction of the driving member 301, thereby ensuring that the flywheel energy storage device 1 has real-time attitude adjustment capability and improving the adaptive attitude adjustment capability of the flywheel energy storage device 1.

[0030] In addition, such as Figure 1 As shown, the detection assembly 20 includes a detection element 201. In the radial direction of the rotor 10, the detection element 201 is located between the drive element 301 and the rotor 10. The drive element 301 is in driving engagement with the inner housing 200. The detection element 201 can perform a detection function, specifically detecting whether the axis of the rotor 10 is offset. The placement of the detection element 201 between the drive element 301 and the rotor 10 in the radial direction of the rotor 10 better reflects actual working conditions. The drive element 301 is in driving engagement with the detection element 201; that is, when the detection element 201 detects an offset in the axis of the rotor 10, the drive element 301 can drive the detection element 201 to move while keeping the rotor 10 position unchanged. This changes the position of the detection element 201, thereby reducing the offset. The detection element 201 can be configured as a magnetic bearing system.

[0031] Furthermore, such as Figure 1As shown, the flywheel energy storage device also includes: an inner housing 200, a detection element 201 located between the inner housing 200 and the rotor 10 in the radial direction of the rotor 10, and at least part of the inner housing 200 abutting against the detection element 201, and a drive element 301 drivingly cooperating with the inner housing 200.

[0032] It should be noted that the inner housing 200 serves as an installation and protection unit for internal components. In the radial direction of the rotor 10, the detection element 201 is located between the inner housing 200 and the rotor 10. This arrangement of the detection element 201 better reflects actual operating conditions. The detection element 201 can detect whether the axis of the rotor 10 is offset. At least a portion of the inner housing 200 is in contact with the detection element 201, thus protecting it. The driving element 301 works in conjunction with the inner housing 200. In other words, when the detection element 201 detects an offset in the axis of the rotor 10, the driving element 301 can move the inner housing 200 while maintaining the rotor 10's position. Since at least a portion of the inner housing 200 is in contact with the detection element 201, the inner housing 200 can move the detection element 201, changing the positions of both the inner housing 200 and the detection element 201, thereby reducing the offset of the detection element 201. It should be noted that the driving component 301 can generate magnetic attraction in the radial direction. The magnitude of the magnetic attraction in the radial direction can be adjusted by changing the current. By controlling the magnetic attraction in the radial direction of the driving component 301, the inner housing 200 can be displaced in the radial direction.

[0033] Of course, such as Figure 1 As shown, the detection component 201 includes a first abutting part 202 and a second abutting part 203, the first abutting part 202 and the second abutting part 203 are connected, and the inner housing 200 includes a third abutting part 204 and a fourth abutting part 205, the third abutting part 204 and the fourth abutting part 205 are connected, and in the radial direction of the rotor 10, the first abutting part 202 and the third abutting part 204 abut together, and the second abutting part 203 and the fourth abutting part 205 abut together.

[0034] It should be noted that the first abutting part 202 and the second abutting part 203 are components of the detection element 201. Both the first abutting part 202 and the second abutting part 203 can perform abutting functions. When the first abutting part 202 is connected to the second abutting part 203, they form a whole, which facilitates the installation of the detection element 201. The third abutting part 204 and the fourth abutting part 205 are components of the inner shell 200. Both the third abutting part 204 and the fourth abutting part 205 can perform abutting functions. When the third abutting part 204 is connected to the fourth abutting part 205, they form a whole. The inner housing 200 is assembled as a whole, which facilitates the installation of the inner housing 200. In the radial direction of the rotor 10, the first abutting part 202 abuts with the third abutting part 204, and the second abutting part 203 abuts with the fourth abutting part 205. At this time, at least part of the inner housing 200 can be abutted with the detection element 201. When the detection element 201 detects that the axis of the rotor 10 has shifted, the driving element 301 can drive the inner housing 200 to move while keeping the position of the rotor 10 unchanged. The inner housing 200 can drive the detection element 201 to move. At this time, the position of the inner housing 200 and the detection element 201 can be changed, thereby reducing the offset of the detection element 201.

[0035] Specifically, such as Figure 1 As shown, the flywheel energy storage device also includes: a housing 300, which is fitted over the outer side of the detection component 20, and a drive component 301 disposed inside the housing 300. The housing 300 serves a protective function, protecting the internal components. Since both the detection component 20 and the drive component 301 are located inside the housing 300, the space occupied by the housing 300 can be utilized efficiently, reducing space requirements. Furthermore, the housing 300 protects both the drive component 301 and the detection component 20.

[0036] Of course, such as Figure 1As shown, there are multiple detection components 20 and multiple adjustment components 30. In the axial direction of the rotor 10, multiple detection components 20 are located at both ends of the rotor 10, and multiple adjustment components 30 are located at both ends of the rotor 10. Multiple detection components 20 and multiple adjustment components 30 can be used, for example, two detection components 20 and two adjustment components 30. In this way, in the axial direction of the rotor 10, the two detection components 20 can be respectively located at both ends of the rotor 10. That is, in the axial direction, the upper and lower ends of the rotor 10 correspond one-to-one with the two detection components 20. At this time, the two detection components 20 can be used to detect whether the axis of the rotor 10 is offset, ensuring the stability of the detection and control by the two detection components 20. The two adjustment components 30 can also be respectively located at both ends of the rotor 10. That is, in the axial direction, the upper and lower ends of the rotor 10 are respectively provided with adjustment components 30. At this time, the two adjustment components 30 can respectively drive the two detection components 20 to move along the radial direction of the rotor 10, thereby adjusting the position of the two detection components 20.

[0037] Furthermore, such as Figure 1 As shown, the flywheel energy storage device 1 further includes: a main housing 40, which is located between the adjustment components 30 at both ends of the rotor 10 in the axial direction of the rotor 10. The rotor 10 includes: a first rotating part 100 and a second rotating part 101. The first rotating part 100 is located inside the main housing 40 and is adapted to cooperate with the stator 50. The second rotating part 101 is connected to both ends of the first rotating part 100 in the axial direction. At least part of the second rotating part 101 is located inside the main housing 40. The detection component 20 is sleeved on the outside of the second rotating part 101.

[0038] The main housing 40 can be used to install other components, protect internal components, and provide a sealed vacuum space for them. In the axial direction of the rotor 10, the main housing 40 is located between the adjusting components 30 at both ends of the rotor 10. In the axial direction of the rotor 10, the main housing 40 can be positioned between two outer housings 300. The first rotating part 100 and the second rotating part 101 are components of the rotor 10. The first rotating part 100 can cooperate with the rotor 10 to achieve bidirectional conversion of electrical energy and mechanical energy. The second rotating part 101 can store energy in the form of high-speed rotating kinetic energy. The first rotating part 100 is located inside the main housing 40, which allows for efficient use of the space within the main housing 40, reducing space occupancy and solving the space arrangement problem of the flywheel energy storage device 1. Furthermore, the main housing 40 protects the first rotating part 100, which is suitable for cooperation with the stator 50, ensuring the normal operation of the motor. The first rotating part 101 is connected to both axial ends of the first rotating part 100, forming a single unit with the first rotating part 100. This facilitates the installation and setup of the rotor 10. At least part of the second rotating part 101 is located within the main housing 40, which allows for efficient use of the space within the main housing 40 and reduces space occupancy, thus solving the space arrangement problem of the flywheel energy storage device 1. Furthermore, the main housing 40 provides protection for part of the second rotating part 101, reducing wind resistance and improving energy conversion efficiency. The detection component 20 is fitted onto the outside of the second rotating part 101. This arrangement of the detection component 20 and the second rotating part 101 better reflects actual working conditions, allowing the detection component 20 to be fitted onto the outside of the rotor 10. The detection component 20 can be used to detect whether the axis of the rotor 10 is offset; that is, it can be used to detect whether the axis of the rotor 10 is aligned with the axis of the stator 50. The first rotating part 100 can be a motor, and the second rotating part 101 can be an energy storage component.

[0039] A specific embodiment of the flywheel energy storage device 1 is as follows: After the flywheel energy storage device 1 is started, the rotor 10 is suspended. The radial and axial travel of the rotor 10 is detected, including the radial displacement of the upper end of the rotor 10, the radial displacement of the lower end, and the total axial displacement. The suspension state parameters of the rotor 10 in the initial state are confirmed by the feedback parameters. When the rotor 10 rotates in the main housing 40, the stator 50 drives the first rotating part 100 to rotate, and the first rotating part 100 drives the entire rotor 10 to rotate. The detection element 201 detects and controls the suspension and rotation of the rotor 10 in real time. During the detection process, the axis of the rotor 10 is fitted in real time, and the radial and axial offset of the rotor 10 relative to the axis of the stator 50 is fed back. If the axis of the rotor 10 is offset, the drive element 301 starts to drive, providing a stable control force to the inner housing 200. After stabilization, the fixing element 302 starts to change from tight fixing to loose fixing, and the control element and The detection element 201 is fitted and controlled to ensure the suspension stability of the rotor 10. Based on the radial and axial offset detection results, the force output ratio between the drive element 301 and the detection element 201 is adjusted to ensure that the rotor 10 and the detection element 201 do not contact each other while the drive element 301 provides most of the control force. When the ratio of the drive element 301 is too large, the drive element 301 begins to adjust the position of the detection element 201 and its associated inner housing 200. While keeping the position of the rotor 10 unchanged, the position of the detection element 201 and the inner housing 200 relative to the outer housing 300 is changed, which can reduce the offset of the detection element 201. When the detection element 201 reaches the predetermined position, the fixing element 302 works to tightly fix the inner housing 200. After the inner housing 200 is fixed, the drive element 301 stops working, and the detection element 201 controls the rotor 10. In this way, the axis consistency can be improved while the control power consumption can be reduced.

[0040] like Figure 2 As shown, the control method of the flywheel energy storage device 1 according to an embodiment of the present invention includes: a detection element 201 detecting whether the axis of the rotor 10 is offset; if so, a driving element 301 driving the detection element 201 to move along the radial direction of the rotor 10; if not, a fixing element 302 fixing the inner housing 200.

[0041] The detection element 201 detects whether the axis of the rotor 10 is aligned with the axis of the stator 50. If the axis of the rotor 10 is not aligned with the axis of the stator 50, the driving element 301 can drive the detection element 201 to move in the radial direction of the rotor 10. If the axis of the rotor 10 is aligned with the axis of the stator 50, the fixing element 302 can fix the inner housing 200 on the outer housing 300, thereby ensuring that there is no relative movement between the inner housing 200 and the outer housing 300.

[0042] Thus, the above methods and steps can be used to detect whether the axis of rotor 10 has shifted, and different methods and steps can be taken depending on whether the axis of rotor 10 has shifted.

[0043] Specifically, such as Figure 2 As shown, in the step of driving the detection element 201 to move along the radial direction of the rotor 10 if so, the driving element 301 enters a stable driving state, the fixing element 302 changes from a state of tightly fixing the inner housing 200 to a state of loosely fixing the inner housing 200, the driving element 301 drives the inner housing 200 to move, and the inner housing 200 drives the detection element 201 to move along the radial direction of the rotor 10.

[0044] When the detection element 201 detects a deviation in the axis of the rotor 10, the drive element 301 enters a stable drive state, and the fixing element 302 changes from a state of tightly fixing the inner housing 200 to a state of loosely fixing the inner housing 200. At this time, the fixing element 302 will not exert additional force on the inner housing 200 to fix the inner housing 200, but the physical limit still exists. The inner housing 200 can achieve radial displacement and slight circumferential rotation. Since the force direction of the detection element 201 is mainly radial and axial, there will be no circumferential force, so there will be no rotational tendency. At this time, the drive element 301 and the inner housing 200 drive each other, and the drive element 301 can drive the inner housing 200 to move. The movement of the inner housing 200 can drive the detection element 201 to move along the radial direction of the rotor 10, thereby reducing the deviation of the detection element 201.

[0045] Thus, by using the above methods and steps, the positions of the detection element 201 and the inner housing 200 relative to the outer housing 300 can be changed while keeping the position of the rotor 10 unchanged, thereby reducing the offset of the detection element 201.

[0046] Furthermore, such as Figure 2 As shown, after the steps of the driving member 301 driving the inner housing 200 to move and the inner housing 200 driving the detection member 201 to move along the radial direction of the rotor 10, the method further includes: the detection member 201 detecting again whether the axis of the rotor 10 is offset; if so, the driving member 301 continues to drive the inner housing 200 to move; if not, the fixing member 302 tightly fixes the inner housing 200.

[0047] After the driving member 301 drives the inner housing 200 to move, and the inner housing 200 drives the detection member 201 to move in the radial direction of the rotor 10, the detection member 201 checks again whether the axis of the rotor 10 is aligned with the axis of the stator 50. If the axis of the rotor 10 is not aligned with the axis of the stator 50, the driving member 301 continues to drive the inner housing 200 to move, and the inner housing 200 continues to drive the detection member 201 to move in the radial direction of the rotor 10. If the axis of the rotor 10 is aligned with the axis of the stator 50, the fixing member 302 can fix the inner housing 200 on the outer housing 300, thereby ensuring that there is no relative movement between the inner housing 200 and the outer housing 300.

[0048] Thus, the above methods and steps can be used to determine whether the axis of rotor 10 has shifted, and different methods and steps can be taken depending on whether the axis of rotor 10 has shifted.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] In the description of this invention, "first feature" and "second feature" may include one or more of the features. In the description of this invention, "a plurality of" means two or more. In the description of this invention, "above" or "below" the second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them. In the description of this invention, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0051] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0052] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flywheel energy storage device, characterized by, include: Rotor (10); A detection component (20) is sleeved on the outside of the rotor (10) and is used to detect whether the axis of the rotor (10) is offset. Adjustment component (30) is driven to cooperate with detection component (20), and adjustment component (30) can drive detection component (20) to move in the radial direction of rotor (10).

2. The flywheel energy storage device of claim 1, wherein, The adjustment component (30) includes a drive member (301) disposed on the radial outer side of the rotor (10), and the drive member (301) can drive the detection component (20) to move.

3. The flywheel energy storage device of claim 2, wherein, The adjustment assembly (30) further includes a fixing member (302), in the axial direction of the rotor (10), at least a portion of the detection assembly (20) is located between the drive member (301) and the fixing member (302), the fixing member (302) selectively fastens the detection assembly (20) in the direction of the drive member (301).

4. The flywheel energy storage device according to claim 2, characterized in that, The detection component (20) includes a detection element (201) located between the drive element (301) and the rotor (10) in the radial direction of the rotor (10), and the drive element (301) drivingly engaging with the detection element (201).

5. The flywheel energy storage device according to claim 4, characterized in that, Also includes: The inner housing (200) is located in the radial direction of the rotor (10), the detection element (201) is located between the inner housing (200) and the rotor (10), and at least part of the inner housing (200) is abutting against the detection element (201), and the driving element (301) is driven to cooperate with the inner housing (200).

6. The flywheel energy storage device according to claim 5, characterized in that, The detection element (201) includes a first abutting part (202) and a second abutting part (203), the first abutting part (202) and the second abutting part (203) are connected. The inner housing (200) includes a third abutting part (204) and a fourth abutting part (205), the third abutting part (204) and the fourth abutting part (205) are connected. In the radial direction of the rotor (10), the first abutting part (202) and the third abutting part (204) abut against each other, and the second abutting part (203) and the fourth abutting part (205) abut against each other.

7. The flywheel energy storage device according to claim 2, characterized in that, Also includes: The outer shell (300) is sleeved on the outside of the detection component (20), and the driving component (301) is disposed on the inside of the outer shell (300).

8. A control method for a flywheel energy storage device according to any one of claims 1-7, characterized in that, include: The detection component (201) detects whether the axis of the rotor (10) is offset; If so, the driving element (301) drives the detection element (201) to move in the radial direction of the rotor (10); If not, the fastener (302) securely fastens the inner housing (200).

9. The control method for the flywheel energy storage device according to claim 8, characterized in that, In the step whereby the driving member (301) drives the detection member (201) to move in the radial direction of the rotor (10), the following steps are included: The drive unit (301) enters a stable drive state; The fastener (302) changes from a state of tightly fixing the inner housing (200) to a state of loosely fixing the inner housing (200); The driving component (301) drives the inner housing (200) to move, and the inner housing (200) drives the detection component (201) to move in the radial direction of the rotor (10).

10. The control method for the flywheel energy storage device according to claim 9, characterized in that, After the step of the driving member (301) driving the inner housing (200) to move, and the inner housing (200) driving the detection member (201) to move in the radial direction of the rotor (10), the method further includes: The testing component (201) checks again whether the axis of the rotor (10) is offset; If so, the drive unit (301) continues to drive the inner housing (200) to move; If not, the fastener (302) securely fastens the inner housing (200).

Images