CN114421706A - Flywheel energy storage device capable of automatically balancing in vacuum environment - Google Patents

Flywheel energy storage device capable of automatically balancing in vacuum environment Download PDF

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Publication number
CN114421706A
CN114421706A CN202210338593.7A CN202210338593A CN114421706A CN 114421706 A CN114421706 A CN 114421706A CN 202210338593 A CN202210338593 A CN 202210338593A CN 114421706 A CN114421706 A CN 114421706A
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China
Prior art keywords
flywheel
flywheel rotor
energy storage
storage device
screw
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Granted
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CN202210338593.7A
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Chinese (zh)
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CN114421706B (en
Inventor
王志强
苏森
韩坤
陈胜林
卜庆瑞
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Huachi Kinetic Energy Beijing Technology Co ltd
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Huachi Kinetic Energy Beijing Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/02—Additional mass for increasing inertia, e.g. flywheels
    • H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H02J15/007—Systems for storing electric energy involving storage in the form of mechanical energy, e.g. fly-wheels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention discloses a flywheel energy storage device capable of automatically balancing in a vacuum environment, which comprises a shell, a motor, a flywheel rotor, a plurality of balance weights, a signal acquisition assembly and a control assembly, wherein the motor and the flywheel rotor are arranged in the shell, the balance weights are arranged on the flywheel rotor and can be locked and released with the flywheel rotor, the signal acquisition assembly is in communication connection with the control assembly, the signal acquisition assembly can calculate the unbalanced mass of the flywheel rotor, and the control assembly can control any one of the balance weights to be locked and released with the flywheel rotor according to the unbalanced mass of the flywheel device. The flywheel energy storage device capable of automatically balancing in the vacuum environment can realize online dynamic balance of the flywheel rotor on the premise of not disassembling the flywheel energy storage device and reserving an operation window, and ensures efficient operation and sealing performance of the flywheel energy storage device.

Description

Flywheel energy storage device capable of automatically balancing in vacuum environment
Technical Field
The invention relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage device capable of automatically balancing in a vacuum environment.
Background
The balancing process of the flywheel rotor in the prior art comprises off-line dynamic balancing and on-line dynamic balancing, the off-line dynamic balancing needs to be carried out on a balancing machine, the cost is high, and the balancing precision is difficult to ensure due to the fact that the rotating speed during balancing is inconsistent with the working rotating speed.
When the dynamic balance in the related technology aggravates or reduces the weight of the flywheel, an operation window needs to be reserved or the flywheel needs to be disassembled, various problems exist in the two modes, for example, the tightness of the flywheel energy storage device can be influenced by reserving the operation window, the running efficiency of the flywheel can be reduced by repeatedly disassembling the flywheel, and the problem of assembly precision exists.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a flywheel energy storage device capable of automatically balancing in a vacuum environment, aiming at the defects and shortcomings of the prior art, the flywheel energy storage device capable of automatically balancing in the vacuum environment can realize online dynamic balance of a flywheel rotor on the premise of not disassembling the flywheel energy storage device and reserving an operation window, and high-efficiency operation and sealing performance of the flywheel energy storage device capable of automatically balancing in the vacuum environment are ensured.
The flywheel energy storage device capable of automatically balancing in the vacuum environment is characterized by comprising the following components: a housing; the motor and the flywheel rotor are arranged in the shell, and the motor can drive the flywheel rotor to rotate; the plurality of weight members are arranged on the flywheel rotor and can be locked and released with the flywheel rotor, the flywheel rotor and the weight members cannot move relatively in a locked state, and the flywheel rotor can rotate relative to the weight members in a released state; the signal acquisition assembly is in communication connection with the control assembly, the signal acquisition assembly can calculate the unbalanced mass of the flywheel rotor, and the control assembly can control any one of the balance weights and the flywheel rotor to be locked and released according to the unbalanced mass of the flywheel rotor.
According to the flywheel energy storage device capable of automatically balancing in the vacuum environment, the balance weights are arranged on the flywheel rotor and can be locked and released with the flywheel rotor, the signal acquisition device can calculate the unbalanced mass size and the unbalanced mass angle of the flywheel rotor, the distribution angles of the balance weights are adjusted by the control assembly through a vector method, the unbalance amount is reduced, automatic balancing of the flywheel rotor in the vacuum environment is achieved, the flywheel does not need to be disassembled, an operation window does not need to be reserved, the flywheel sealing performance is good, the operation efficiency is high, namely, on-line dynamic balancing of the flywheel rotor can be achieved on the premise that the flywheel energy storage device and the operation window are not disassembled, and efficient operation and sealing performance of the flywheel energy storage device capable of automatically balancing in the vacuum environment are guaranteed.
In some embodiments, the flywheel rotor is provided with an annular groove extending along the axial direction of the flywheel rotor on the top surface and/or the bottom surface, at least part of the counterweight is fitted in the annular groove, and in a locking state, the counterweight is tightly attached to the bottom wall of the annular groove, and in a releasing state, the counterweight is not tightly pressed with the bottom wall of the annular groove.
In some embodiments, the annular groove includes a first groove section and a second groove section, the first groove section is located at a bottom of the second groove section, and a dimension of the first groove section in the radial direction of the flywheel rotor is larger than a dimension of the second groove section in the radial direction of the flywheel rotor, the weight member includes a stopper adapted to fit within the first groove section, and the dimension of the stopper in the radial direction of the flywheel rotor is larger than the dimension of the second groove section in the radial direction of the flywheel rotor.
In some embodiments, the weight member further includes a clip, a groove is formed in an end surface of the clip facing the bottom wall of the annular groove, the groove penetrates through the clip along a radial direction of the flywheel rotor, the limiting block is fitted in the groove and connected with the clip through a screw penetrating through the clip along an axial direction of the flywheel rotor, and two ends of the limiting block extend out of the groove.
In some embodiments, the control assembly includes a screw, a retaining member, and a driving member, the driving member can drive the screw and the retaining member to move in the axial direction of the flywheel rotor, the screw can screw the screw, and the retaining member can retain the clamping block.
In some embodiments, the holding member includes a barrel and two jaws, the two jaws are connected to the end portion of the barrel facing the weight member and located on two sides of the barrel respectively, the screw rod is inserted into the barrel, two ends of the screw rod extend out of the barrel, and one end of the screw rod facing the weight member is located between the two jaws.
In some embodiments, a limiting convex ring is arranged on the periphery of the screw rod, the limiting convex ring abuts against the bottom wall of the barrel, a limiting column is arranged on the periphery of the barrel, a blocking portion is arranged on the inner wall of the shell, and the blocking portion can abut against the limiting column to prevent the barrel from rotating.
In some embodiments, the inner side surface of the pawl includes a vertical plane and an inclined surface, the inclined surface being away from the barrel with respect to the vertical plane, the inclined surface being inclined to extend outwardly away from the direction of the barrel.
In some embodiments, the control assembly further includes a transmission sleeve, the transmission sleeve is sleeved on the screw and is in clearance fit with the screw, the barrel is sleeved on the transmission sleeve and is in threaded connection with the transmission sleeve, the transmission sleeve is far away from the jaw relative to the limit convex ring, a support spring is arranged between the limit convex ring and the transmission sleeve, the driving member includes a first driving member and a second driving member, the first driving member can drive the transmission sleeve to rotate through a gear, the transmission sleeve can drive the clamping member to lift, and the second driving member can drive the screw to rotate so as to screw the screw.
In some embodiments, the gear sleeve is disposed on and interference fit with the drive sleeve.
Drawings
Fig. 1 is a schematic structural diagram of a flywheel energy storage device capable of automatically balancing in a vacuum environment according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a counterweight of a flywheel energy storage device capable of automatically balancing in a vacuum environment according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a control assembly of a flywheel energy storage device capable of automatically balancing in a vacuum environment according to an embodiment of the invention.
Fig. 4 is a cross-sectional view of a control assembly of a flywheel energy storage device that is automatically balanced in a vacuum environment, according to an embodiment of the invention.
Fig. 5 is an assembly view of the weight member and flywheel rotor of the flywheel energy storage device for automatic balancing under vacuum environment according to the embodiment of the invention.
Fig. 6 shows an initial distribution state of the weight members of the flywheel energy storage device capable of automatically balancing in a vacuum environment according to the embodiment of the invention.
Fig. 7 shows a counterweight trim and distribution state of a flywheel energy storage device automatically balanced in a vacuum environment according to an embodiment of the invention.
Fig. 8 shows a counterweight re-balancing state of a flywheel energy storage device automatically balanced under vacuum according to an embodiment of the invention.
Reference numerals:
the device comprises a shell 1, a motor 2, a flywheel rotor 3, an annular groove 31, a counterweight 4, a fixture block 41, a limiting block 42, a control component 5, a screw rod 51, a clamping component 52, a cylinder 521, a jaw 522, a limiting column 523, a gear 53, a transmission sleeve 54, a supporting spring 55, a signal acquisition component 6, a radial magnetic bearing 7 and an axial magnetic bearing 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 8, the flywheel energy storage device capable of automatically balancing in a vacuum environment according to the embodiment of the present invention includes a housing 1, a motor 2, a flywheel rotor 3, a plurality of weights 4, a signal acquisition assembly 6, and a control assembly 5. It should be noted that the flywheel energy storage device capable of automatically balancing in a vacuum environment is a rotating body with large moment of inertia and high speed, and when the flywheel energy storage device operates, the inside of the device is in a vacuum state, and the flywheel energy storage device capable of automatically balancing in a vacuum environment adopts the radial magnetic bearing 7 and the axial magnetic bearing 8 to carry out balanced support on the flywheel rotor 3 and the motor 2.
As shown in fig. 1, the motor 2 and the flywheel rotor 3 are both disposed in the housing 1, and the motor 2 can drive the flywheel rotor 3 to rotate, the plurality of weights 4 are disposed on the flywheel rotor 3 and can be locked and released with the flywheel rotor 3, in the locked state, the flywheel rotor 3 and the weights 4 cannot move relatively, in the released state, the flywheel rotor 3 can rotate relative to the weights 4, the signal acquisition assembly 6 is in communication connection with the control assembly 5, the signal acquisition assembly 6 can calculate the unbalanced mass of the flywheel rotor 3, and the control assembly 5 can control any one of the weights 4 to be locked and released with the flywheel rotor 3 according to the unbalanced mass of the flywheel rotor 3.
The signal acquisition assembly 6 comprises a displacement sensor and a controller, the displacement sensor can sense the displacement information of the flywheel rotor 3, and the controller can calculate the unbalanced mass of the flywheel rotor 3 according to the information.
It should be noted that, the balancing process of the flywheel rotor in the related art includes off-line dynamic balancing and on-line dynamic balancing, the off-line dynamic balancing needs to be performed on a balancing machine, the cost is high, and the balancing precision is difficult to ensure due to the inconsistency between the rotating speed during balancing and the operating rotating speed. On-line dynamic balance in related technologies needs to be disassembled to weight the flywheel energy storage device, repeated disassembly and assembly are troublesome and labor-consuming, assembly accuracy can not be guaranteed to be consistent at every time, or disassembly and assembly problems can be avoided by reserving an operation window, but the reserved operation window influences the tightness of a flywheel structure, performance of the flywheel energy storage device is reduced, vacuumizing and vacuumizing are needed to be performed at every time of weight increase and weight reduction, repeated operation is achieved, and operation efficiency of the flywheel energy storage device is influenced.
In the application, the weight parts 4 which can be locked and released are assembled on the flywheel rotor 3, and the number of the weight parts 4 is multiple, so that automatic balancing can be realized by adjusting the positions of the weight parts 4.
To facilitate understanding of the automatic balancing process of the present application, taking three sets of weights 4 as an example, each set includes two weights 4, and taking three weights 4 connected to the upper end surface of the flywheel rotor 3 as an example, as shown in fig. 6, when the flywheel rotor 3 is assembled, the three weights 4 in the annular groove 31 are uniformly distributed on the circumference, one of the three weights is placed at an initial zero-angle position, and the flywheel rotor 3 is operated to a balanced rotation speed in an initial state to acquire vibration data.
Further, the initial state of the flywheel rotor 3 is determined, and then all three weights 4 are moved to the zero-degree angle position through the balancing operation (as shown in fig. 7), specifically, the process may release the weight 4 at one non-zero-degree position, lock the weight 4 at the zero-degree position after the weight 4 is opposite to the zero-degree position, and then repeat the above operations for the weight 4 at the other non-zero-degree position, at this time, the mass of two weights 4 is added at the zero-degree position, and then the flywheel rotor 3 is operated to the balance rotation speed, and the vibration data is collected.
Further, the three balance weights 4 are restored to the initial state of uniform distribution (as shown in fig. 8), the flywheel rotor 3 is operated to the balance rotating speed, vibration data are collected, the size and the angle of the unbalanced mass can be obtained through calculation of a balance algorithm, and then the distribution angles of the three balance weights 4 are adjusted through a vector method to reduce the unbalance until the requirement of the designed balance grade is met.
From this, this application is through setting up a plurality of relative position adjustable's counterweight 4 on flywheel rotor 3, and the distribution angle of three counterweight 4 is adjusted to accessible vector method, reduces the unbalance amount, realizes the automatic balance of flywheel rotor under vacuum environment, need not to unpack apart flywheel energy memory, also need not reserve operation window, and the flywheel leakproofness is good, and the operating efficiency is high.
According to the flywheel energy storage device capable of automatically balancing in the vacuum environment, the balance weights are arranged on the flywheel rotor and can be locked and released with the flywheel rotor, the signal acquisition device can calculate the unbalanced mass size and the unbalanced mass angle of the flywheel rotor, the distribution angles of the balance weights are adjusted by the control assembly through a vector method, the unbalance amount is reduced, automatic balancing of the flywheel rotor in the vacuum environment is achieved, the flywheel does not need to be disassembled, an operation window does not need to be reserved, the flywheel sealing performance is good, the operation efficiency is high, namely, on-line dynamic balancing of the flywheel rotor can be achieved on the premise that the flywheel energy storage device and the operation window are not disassembled, and efficient operation and sealing performance of the flywheel energy storage device capable of automatically balancing in the vacuum environment are guaranteed.
Further, as shown in fig. 5, an annular groove 31 extending along the axial direction of the flywheel rotor 3 is provided on the top surface and/or the bottom surface of the flywheel rotor 3, at least a part of the weight member 4 is fitted in the annular groove 31, and in the locked state, the weight member 4 is tightly attached to the bottom wall of the annular groove 31, and in the released state, the weight member 4 is not pressed against the bottom wall of the annular groove 31. Therefore, the annular groove 31 can be limited to the relative position of the weight part 4, the assembling position of the weight part 4 is accurate, and the weight part 4 can not radially deviate along with the high-speed rotation of the flywheel rotor 3.
Further, as shown in fig. 1, the annular groove 31 includes a first groove section and a second groove section, the first groove section is located at the bottom of the second groove section, and the size of the first groove section in the radial direction of the flywheel rotor 3 is larger than the size of the second groove section in the radial direction of the flywheel rotor 3, the weight member 4 includes a stopper 42, the stopper 42 is adapted to fit in the first groove section, and the size of the stopper 42 in the radial direction of the flywheel rotor 3 is larger than the size of the second groove section in the radial direction of the flywheel rotor 3.
The second slot segment thus limits the stop 42 in the first slot segment, ensuring that the weight 4 does not fall out of the annular groove 31 when the weight 4 is in the released state.
Further, as shown in fig. 1 and 2, the weight member 4 further includes a fixture block 41, an end surface of the fixture block 41 facing the bottom wall of the annular groove 31 has a groove, the groove penetrates through the fixture block 41 along the radial direction of the flywheel rotor 3, the stopper 42 is fitted in the groove and connected to the fixture block 41 through a screw penetrating through the fixture block 41 along the axial direction of the flywheel rotor 3, and two ends of the stopper 42 extend out of the groove.
In some embodiments, as shown in fig. 3 and 4, the control assembly 5 includes a screw 51, a retaining member 52, and a driving member, the driving member can drive the screw 51 and the retaining member 52 to move in the axial direction of the flywheel rotor 3, the screw 51 can be screwed, and the retaining member 52 can retain the latch 41.
In other words, when the weight member 4 needs to be released, the driving member can drive the screw 51 and the retaining member 52 to move toward the weight member 4, the retaining member 52 can retain the latch 41, the screw 51 can screw the screw to release the pressing force between the weight member and the flywheel rotor 3, and similarly, the locking operation of the weight member 4 is also performed by the driving member driving the screw 51 and the retaining member 52, which will not be described herein.
Specifically, as shown in fig. 3, the holding member 52 includes a cylinder 521 and two jaws 522, the two jaws 522 are connected to the end portion of the cylinder 521 facing the weight member 4 and are respectively located at two sides of the cylinder 521, the screw 51 is inserted into the cylinder 521, two ends of the screw 51 extend out of the cylinder 521, and one end of the screw 51 facing the weight member 4 is located between the two jaws 522. It can be understood that the screw 51 is inserted into the cylinder 521, so that the structural compactness of the control assembly 5 can be improved, and the optimization of the layout of the flywheel energy storage device in the vacuum environment is facilitated.
Further, as shown in fig. 4, a limiting convex ring is disposed on the outer periphery of the screw 51, the limiting convex ring abuts against the bottom wall of the cylinder 521, a limiting post 523 is disposed on the outer peripheral surface of the cylinder 521, and a blocking portion is disposed on the inner wall of the housing 1 and can abut against the limiting post 523 to prevent the cylinder 521 from rotating. Thus, the stopper may restrict the catch 52 to move in the vertical direction, and the stopper collar may prevent the screw 51 from falling out of the cylinder 521.
Further, as shown in fig. 3 and 4, the inner side surface of the jaw 522 includes a vertical plane and an inclined surface, the inclined surface is far away from the cylinder 521 relative to the vertical plane, and the inclined surface is inclined to extend outward away from the cylinder 521. Thus, the inclined surface can serve as a guide surface of the jaw 522, facilitating the jaw 522 to smoothly catch the latch 41.
Further, as shown in fig. 4, the control assembly 5 further includes a transmission sleeve 54, the transmission sleeve 54 is sleeved on the screw 51 and is in clearance fit with the screw 51, the cylinder 521 is sleeved on the transmission sleeve 54 and is in threaded connection with the transmission sleeve 54, the transmission sleeve 54 is far away from the jaw 522 relative to the limit convex ring, a support spring 55 is disposed between the limit convex ring and the transmission sleeve 54, the driving member includes a first driving member and a second driving member, the first driving member can drive the transmission sleeve 54 to rotate through the gear 53, the transmission sleeve 54 can drive the clamping member 52 to lift and lower, and the second driving member can drive the screw 51 to rotate to screw the screw.
Therefore, the first driving member drives the transmission sleeve 54 to rotate so as to drive the sleeve to move along the axial direction of the flywheel rotor 3, meanwhile, the supporting spring 55 stops against the limit convex ring to drive the screw rod 51 to move synchronously with the clamping member 52, and the pressing force provided by the supporting spring 55 can enable the extending end of the screw rod 51 to be always kept between the two jaws 522, so that when the control assembly 5 operates the counterweight member 4, the clamping member 52 and the screw rod 51 can be synchronously positioned, namely the application can simultaneously control the screw rod 51 and the clamping member 52 to move through one driving member.
Further, the gear 53 is sleeved on the transmission sleeve 54 and is in interference fit with the transmission sleeve 54, so that the transmission sleeve 54, the screw 51 and the retaining piece 52 are supported by the gear 53.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A flywheel energy storage device capable of automatically balancing in a vacuum environment is characterized by comprising:
a housing;
the motor and the flywheel rotor are arranged in the shell, and the motor can drive the flywheel rotor to rotate;
the plurality of weight members are arranged on the flywheel rotor and can be locked and released with the flywheel rotor, the flywheel rotor and the weight members cannot move relatively in a locked state, and the flywheel rotor can rotate relative to the weight members in a released state;
the signal acquisition assembly is in communication connection with the control assembly, the signal acquisition assembly can calculate the unbalanced mass of the flywheel rotor, and the control assembly can control any one of the balance weights and the flywheel rotor to be locked and released according to the unbalanced mass of the flywheel rotor.
2. A flywheel energy storage device capable of automatically balancing under vacuum environment as claimed in claim 1, wherein the flywheel rotor is provided with an annular groove extending along the axial direction on the top surface and/or the bottom surface thereof, at least part of the weight member is fitted in the annular groove, and in the locked state, the weight member is tightly attached to the bottom wall of the annular groove, and in the released state, the weight member is not pressed against the bottom wall of the annular groove.
3. The flywheel energy storage device capable of automatically balancing under vacuum environment according to claim 2, wherein the annular groove comprises a first groove section and a second groove section, the first groove section is located at the bottom of the second groove section, and the size of the first groove section in the radial direction of the flywheel rotor is larger than that of the second groove section in the radial direction of the flywheel rotor, the weight member comprises a limit block, the limit block is adapted to fit in the first groove section, and the size of the limit block in the radial direction of the flywheel rotor is larger than that of the second groove section in the radial direction of the flywheel rotor.
4. The flywheel energy storage device capable of automatically balancing under vacuum environment of claim 3, wherein the weight member further comprises a stopper, a groove is formed on an end surface of the stopper facing the bottom wall of the annular groove, the groove penetrates through the stopper along the radial direction of the flywheel rotor, the stopper is fitted in the groove and connected to the stopper through a screw penetrating through the stopper along the axial direction of the flywheel rotor, and two ends of the stopper extend out of the groove.
5. The flywheel energy storage device capable of automatically balancing under vacuum environment of claim 4, wherein the control assembly comprises a screw, a clamping member and a driving member, the driving member can drive the screw and the clamping member to move along the axial direction of the flywheel rotor, the screw can be screwed on the screw, and the clamping member can clamp the clamping block.
6. The flywheel energy storage device capable of automatically balancing under vacuum environment as claimed in claim 5, wherein the retaining member comprises a cylinder and two jaws, the two jaws are connected to the end of the cylinder facing the weight member and located at two sides of the cylinder respectively, the screw rod is inserted into the cylinder, two ends of the screw rod extend out of the cylinder, and one end of the screw rod facing the weight member is located between the two jaws.
7. The flywheel energy storage device capable of automatically balancing under the vacuum environment of claim 6, wherein a limiting convex ring is arranged on the periphery of the screw rod, the limiting convex ring abuts against the bottom wall of the cylinder, a limiting column is arranged on the outer peripheral surface of the cylinder, a blocking portion is arranged on the inner wall of the shell, and the blocking portion can stop the limiting column to prevent the cylinder from rotating.
8. The flywheel energy storage device capable of automatically balancing under the vacuum environment as claimed in claim 6, wherein the inner side surface of the claw comprises a vertical plane and an inclined plane, the inclined plane is far away from the cylinder body relative to the vertical plane, and the inclined plane is inclined and extends outwards in a direction far away from the cylinder body.
9. The flywheel energy storage device capable of automatically balancing under vacuum environment of claim 7, wherein the control assembly further comprises a transmission sleeve, the transmission sleeve is sleeved on the screw and in clearance fit with the screw, the cylinder is sleeved on the transmission sleeve and in threaded connection with the transmission sleeve, the transmission sleeve is far away from the jaw relative to the limit convex ring, a support spring is arranged between the limit convex ring and the transmission sleeve, the driving member comprises a first driving member and a second driving member, the first driving member can drive the transmission sleeve to rotate through a gear, the transmission sleeve can drive the clamping member to lift, and the second driving member can drive the screw to rotate so as to screw the screw.
10. The flywheel energy storage device capable of automatically balancing under the vacuum environment of claim 9, wherein the gear is sleeved on the transmission sleeve and is in interference fit with the transmission sleeve.
CN202210338593.7A 2022-04-01 2022-04-01 Flywheel energy storage device capable of automatically balancing in vacuum environment Active CN114421706B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001336578A (en) * 2000-05-29 2001-12-07 Shigetaka Aoyama Dynamic balance adjusting device of flywheel
CN201956794U (en) * 2011-02-16 2011-08-31 东南大学 High-speed flexible flywheel energy storage device
CN202108596U (en) * 2011-05-11 2012-01-11 浙江吉润汽车有限公司 Device for running-in and debugging of engine
CN203119682U (en) * 2013-02-04 2013-08-07 中国石油化工股份有限公司 Flywheel energy-storage rotor shaft
CN111313600A (en) * 2020-03-09 2020-06-19 贝肯新能源(天津)有限公司 High-capacity flywheel energy storage device
CN113489232A (en) * 2021-07-29 2021-10-08 中国科学院工程热物理研究所 Flywheel structure and flywheel energy storage system
CN215772809U (en) * 2021-09-02 2022-02-08 武汉恒盛兴电力自动化有限公司 Flywheel energy storage device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001336578A (en) * 2000-05-29 2001-12-07 Shigetaka Aoyama Dynamic balance adjusting device of flywheel
CN201956794U (en) * 2011-02-16 2011-08-31 东南大学 High-speed flexible flywheel energy storage device
CN202108596U (en) * 2011-05-11 2012-01-11 浙江吉润汽车有限公司 Device for running-in and debugging of engine
CN203119682U (en) * 2013-02-04 2013-08-07 中国石油化工股份有限公司 Flywheel energy-storage rotor shaft
CN111313600A (en) * 2020-03-09 2020-06-19 贝肯新能源(天津)有限公司 High-capacity flywheel energy storage device
CN113489232A (en) * 2021-07-29 2021-10-08 中国科学院工程热物理研究所 Flywheel structure and flywheel energy storage system
CN215772809U (en) * 2021-09-02 2022-02-08 武汉恒盛兴电力自动化有限公司 Flywheel energy storage device

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