CN106787409A - Energy accumulation device for fly wheel - Google Patents
Energy accumulation device for fly wheel Download PDFInfo
- Publication number
- CN106787409A CN106787409A CN201710020786.7A CN201710020786A CN106787409A CN 106787409 A CN106787409 A CN 106787409A CN 201710020786 A CN201710020786 A CN 201710020786A CN 106787409 A CN106787409 A CN 106787409A
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- China
- Prior art keywords
- magnet
- rotating shaft
- magnetic suspension
- fly wheel
- accumulation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009825 accumulation Methods 0.000 title claims abstract description 29
- 239000000725 suspension Substances 0.000 claims abstract description 38
- 238000005266 casting Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
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- 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
Abstract
The energy accumulation device for fly wheel that the present invention is provided, including：Rotor, stator and magnetic suspension bearing, the rotor includes rotating shaft and the flywheel being arranged in the rotating shaft, the magnetic suspension bearing includes the first magnet being arranged in rotating shaft and the second magnet and the 3rd magnet that are arranged on stator, second magnet coordinates along the axial direction of the rotating shaft with first magnet gap, 3rd magnet coordinates along the radial direction of the rotating shaft with first magnet gap, first magnet repels with second magnet axial, and first magnet and the 3rd magnet radially repel.The energy accumulation device for fly wheel self-discharge rate that the present invention is provided is low.
Description
Technical field
The present invention relates to energy storage device field, more particularly to a kind of energy accumulation device for fly wheel.
Background technology
Flywheel is a kind of mechanical device for being used to store rotation function in rotary motion.Flywheel energy storage is by accelerating to turn
Sub (flywheel) to flank speed, the energy storage mode during energy is stored in into system in the form of the rotation function.When releasing energy, fly
Wheel speed reduction；During storage energy, Speed of Reaction Wheels is raised.
In the watt steam engine epoch that the origin of flywheel can be traced back to before more than 100 years, flywheel at that time is mainly used to keep
The steady operating of machine, purposes is relatively simple.Until the nineties in 20th century, the fast development of magnetic levitation technology, there is provided at a high speed
The contactless support of rotating machinery, cooperation vacuum technique, new high strength composite (such as carbon fibre composite), quickly
The motor technology and Power Electronic Technique of development, sensing technology, control technology, flying wheel battery enter high-speed development period, flywheel
There is no destruction in rotor and rotating speed is greatly improved, and frictional dissipation is preferably minimized level.
Also known as flying wheel battery or electromechanical cell, it has become one strength of new life of battery industry to flywheel energy storage system,
In the trend of many substituted chemical cells of aspect.Compared with chemical cell, the advantage of flying wheel battery is mainly manifested in：
2. to temperature-insensitive, (absolute green product) very friendly to environment；
2. energy storage density is high, and instantaneous power is big, and power density is even also higher than gasoline, thus in a short time can be with defeated
Go out bigger energy, this transmitting for being very beneficial for magnetic artillery and the quick startup of electric automobile；
3. in whole life cycle, energy storage density and service life will not be influenceed because of overcharge or overdischarge, and
Flywheel will not also suffer damage；
4. depth of discharge and residue " electricity " are easily measured；
5. the charging interval is shorter, typically can be just full of battery in a few minutes；
6. service life depends primarily on the life-span of electronic component in flying wheel battery, general up to 20 years or so；
7. energy conversion efficiency is high, general up to 85%~95%, it means that have more available energy, less
Heat dissipation, and the energy conversion efficiency highest of chemical cell only has 75%；
8. when it is applied in combination with some devices, such as it is used to be combined together with satellite gravity anomaly device on satellite
When, its advantage is more obvious.On the whole, it is minimum also in 40Wh/kg to the utilisable energy density of flying wheel battery in 2007
More than, highest has reached 944Wh/kg, it is seen that its advantage is fairly obvious.When it is used on electric automobile,
So that Prospect in Modern Auto Manufacture Industry person completely dispenses with consideration discharge of automobile exhaust fumes, so as to really start going through for non-exhaust emission automobile
History, reaches the purpose of energy-saving and emission-reduction.
But, due to flywheel high-speed rotation, rotation friction causes the self-discharge rate of flywheel energy storage high, such as stops charging,
Energy will voluntarily exhaust within a few to tens of hours.
The content of the invention
For defect of the prior art, the present invention provides a kind of self-discharge rate low energy accumulation device for fly wheel.
The energy accumulation device for fly wheel that the present invention is provided, including：Rotor, stator and magnetic suspension bearing, the rotor include rotating shaft
With the flywheel being arranged in the rotating shaft, the magnetic suspension bearing includes the first magnet for being arranged in rotating shaft and is arranged on
The second magnet and the 3rd magnet on stator, second magnet are matched somebody with somebody along the axial direction of the rotating shaft with first magnet gap
Close, the 3rd magnet coordinates along the radial direction of the rotating shaft with first magnet gap, first magnet and described second
Magnet axial is repelled, and first magnet and the 3rd magnet radially repel.
The energy accumulation device for fly wheel that the present invention is provided, is connected, the second magnet pair between stator and rotor by magnetic suspension bearing
The repulsion of the first magnet forms axial limiting, and the 3rd magnet forms radially spacing to the repulsion of the first magnet, so that rotor exists
Relative stator suspends during higher than critical speed, meanwhile, the rotor of high-speed rotation produces gyroscopic effect, stability to be lifted with rotating speed,
Load capacity strengthens, so that reduce rotation friction, and the self discharge that frictional force is caused, reduce self-discharge rate.
The energy accumulation device for fly wheel that the present invention is provided can also have following supplementary features：
Further, also including setting axial direction protection bearing and radial direction protection bearing between rotor and stator.
Further, the magnetic suspension bearing includes first magnet and second magnet；The rotating shaft is along vertical
Direction is set, and second magnet is located at the lower section of first magnet.
Further, the magnetic suspension bearing is many sets, is set along rotating shaft axially spaced-apart.
Further, the magnetic suspension bearing includes first magnet and second magnet；The magnetic suspension shaft
It is many sets to hold, and a portion magnetic suspension bearing is opposite along the installation direction of rotating shaft axial direction with the magnetic suspension bearing of remainder.
Further, the magnetic suspension bearing includes two the second magnets, and two second magnets are located at institute respectively
State two ends of first magnet along rotating shaft axial direction.
Further, the magnetic suspension bearing includes two the first magnets, and two first magnets are located at institute respectively
State two ends of second magnet along rotating shaft axial direction.
Further, the magnetic suspension bearing is more than two sets.
Further, also including vacuum casting, the rotor is arranged in the vacuum chamber that the vacuum casting is formed.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described.In all of the figs, similar element
Or the general reference by being similar in part is identified.In accompanying drawing, each element or part might not draw according to actual ratio.
The structural representation of the energy accumulation device for fly wheel that Fig. 1 is provided for an embodiment；
Fig. 2 is the axial sectional view of energy accumulation device for fly wheel in an embodiment；
Fig. 3 is the axial sectional view of energy accumulation device for fly wheel in another embodiment；
Fig. 4 is the axial sectional view of energy accumulation device for fly wheel in another embodiment；
Fig. 5 is the axial sectional view of energy accumulation device for fly wheel in another embodiment；
Fig. 6 is the axial sectional view of energy accumulation device for fly wheel in another embodiment.
Specific embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Technical scheme is clearly illustrated, therefore is only used as example, and protection model of the invention can not be limited with this
Enclose.
It should be noted that unless otherwise indicated, technical term used in this application or scientific terminology should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
Referring to Figures 1 and 2, in an embodiment, the energy accumulation device for fly wheel that the present invention is provided, including：Rotor, stator and magnetcisuspension
Floating axle holds 200, and the rotor includes rotating shaft 110 and the flywheel 120 being arranged in the rotating shaft 110, the also drive connection of rotating shaft 110
There is motor 300, the magnetic suspension bearing 200 includes the first magnet 210 being arranged in rotating shaft 110 and is arranged on stator
The second magnet 220 and the 3rd magnet 230, axial direction and first magnet of second magnet 220 along the rotating shaft 110
210 gaps coordinate, and the 3rd magnet 230 coordinates along the radial direction of the rotating shaft 110 with the gap of the first magnet 210.Wherein
3rd magnet is toroidal magnet, is enclosed within the outside of first magnet, the first magnet, the second magnet and the 3rd equal edge of magnet
Axial charging, and the first magnet and the second magnet magnetizing direction are conversely, the first magnet and the 3rd magnet magnetizing direction are identical, because
This, first magnet 210 is mutually exclusive vertically with second magnet 220, and first magnet 210 and the described 3rd
Magnet 230 is radially mutually exclusive.
The magnetic suspension bearing 200 is often covered in this implementation includes first magnet 210 and second magnet 220；
The magnetic suspension bearing 200 be two sets, wherein a set of magnetic suspension bearing 200 with another set of magnetic suspension bearing 200 along the axle of rotating shaft 110
To installation direction conversely, axial movement so as to limit rotating shaft 110.
It should be appreciated that when rotating shaft is set along vertical mode, also first magnetic only can be located at comprising the second magnet
The magnetic suspension bearing of the lower section of body, the second magnet provides upward support force, as shown in fig. 6, covering magnetic suspension bearing, is respectively mounted more
Direction is identical.
The energy accumulation device for fly wheel that the present embodiment is provided, is connected, the second magnetic between stator and rotor by magnetic suspension bearing 200
The repulsion of 220 pairs of the first magnets 210 of body forms axial limiting, and the repulsion of the 3rd the first magnet 210 of magnet 230 pairs is formed and radially limited
Position, meanwhile, the rotor of high-speed rotation produces gyroscopic effect, improves stability, when rotating speed is higher than critical speed, can carry negative
In the case of load, stable suspersion reduces frictional resistance, reduces self-discharge rate.
Specifically, in the present embodiment, rotating shaft 110 is vertically set.Inventor is existed by the discovery that studies for a long period of time, rotor
When bearing radial direction external applied load, when rotating speed is relatively low, it is impossible to stable suspersion, stabilization is possible under the dynamic only when high speed rotates
Suspend.Therefore rotating shaft 110 is vertically set in the present embodiment, reduces radial direction external applied load, during compared to rotating shaft horizontal positioned, reaches
Critical speed to stable state is low, improves energy storage efficiency.
Further, the energy accumulation device for fly wheel of the present embodiment also includes setting axial direction protection axle between rotor and stator
Hold 410 and protect bearing 420 with radial direction, main rising is supported in static or startup to rotor, or is avoided when running at high speed
Rotor is surprisingly collided with stator, causes equipment fault.
Specifically, also bearing capacity can be improved by increasing the quantity of magnetic suspension bearing 200.
As shown in figure 3, in another embodiment, the installation direction of magnetic suspension bearing can also be in contrast with the previous embodiment.
Reference picture 4, in another embodiment, often covering the magnetic suspension bearing 200 includes two the second magnets 220, two
Individual second magnet 220 is located at two ends of first magnet 210 along the axial direction of rotating shaft 110 respectively.A set of magnetic suspension bearing 200
Two the second magnets, 220 pairs of the first magnets 210 carry out vertically it is bidirectionally limited.
Reference picture 5, in other embodiments, often to cover and may also include two the first magnets in the magnetic suspension bearing 200
210, two first magnets 210 are located at two ends of second magnet 220 along the axial direction of rotating shaft 110 respectively.
In another embodiment, energy accumulation device for fly wheel also includes vacuum casting, and the rotor is arranged on the vacuum casting shape
Into vacuum chamber in.So as to further reduce air drag when flywheel 120 is rotated, self-discharge rate is reduced.
It is all of in above-mentioned multiple embodiments of the application in order to further improve the energy accumulation device for fly wheel of the application
Magnet all uses permanent magnet.If following shortcomings will be produced using electromagnet：One, it will consume the electric energy of a system part, from
And reduce the energy storage efficiency of system；Two, it must install multiple position sensors, once there is a failure, bearing cannot
Normal work, reduces the reliability of system；Three, the presence of control system increased the complexity of system, increased system mistake
The possibility of effect.All these also reduces the reliability of system in addition to the expense for having increased considerably system.
In the description of the present application, it is to be understood that term " on ", D score, "front", "rear", "left", "right", " water
It is flat ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, merely to just
Described in the description present invention and simplifying, rather than indicate imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying relatively important
Property or the implicit quantity for indicating indicated technical characteristic.In the description of the invention, " multiple " is meant that two or more,
Unless otherwise expressly limited specifically.
In specification of the invention, numerous specific details are set forth.It is to be appreciated, however, that embodiments of the invention can be with
Put into practice in the case of without these details.In some instances, known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.
In the description of this specification, specific features, structure, material or feature can be in any one or more embodiments
Or combined in an appropriate manner in example.Additionally, in the case of not conflicting, those skilled in the art can say this
The feature of different embodiments or example and different embodiments or example described in bright book is combined and combines.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover in the middle of the scope of claim of the invention and specification.
Claims (9)
1. a kind of energy accumulation device for fly wheel, it is characterised in that including：Rotor, stator and magnetic suspension bearing, the rotor include rotating shaft
With the flywheel being arranged in the rotating shaft, the magnetic suspension bearing includes the first magnet for being arranged in rotating shaft and is arranged on
The second magnet and the 3rd magnet on stator, second magnet are matched somebody with somebody along the axial direction of the rotating shaft with first magnet gap
Close, the 3rd magnet coordinates along the radial direction of the rotating shaft with first magnet gap, first magnet and described second
Magnet axial is repelled, and first magnet and the 3rd magnet radially repel.
2. energy accumulation device for fly wheel according to claim 1, it is characterised in that also including setting between rotor and stator
Axially protection bearing and radially protection bearing.
3. energy accumulation device for fly wheel according to claim 1, it is characterised in that the magnetic suspension bearing includes first magnetic
Body and second magnet；The rotating shaft is vertically set, and second magnet is located at the lower section of first magnet.
4. energy accumulation device for fly wheel according to claim 3, it is characterised in that the magnetic suspension bearing is many sets, along rotating shaft
Axially spaced-apart is set.
5. energy accumulation device for fly wheel according to claim 1, it is characterised in that the magnetic suspension bearing includes first magnetic
Body and second magnet；The magnetic suspension bearing is many sets, the magnetic suspension of a portion magnetic suspension bearing and remainder
Bearing is opposite along the installation direction of rotating shaft axial direction.
6. energy accumulation device for fly wheel according to claim 1, it is characterised in that the magnetic suspension bearing includes two the second magnetic
Body, two second magnets are located at two ends of first magnet along rotating shaft axial direction respectively.
7. energy accumulation device for fly wheel according to claim 1, it is characterised in that the magnetic suspension bearing includes two the first magnetic
Body, two first magnets are located at two ends of second magnet along rotating shaft axial direction respectively.
8. the energy accumulation device for fly wheel according to claim 6 or 7, it is characterised in that the magnetic suspension bearing is more than two sets.
9. energy accumulation device for fly wheel according to claim 1, it is characterised in that also including vacuum casting, the rotor is set
In the vacuum chamber that the vacuum casting is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020786.7A CN106787409A (en) | 2017-01-12 | 2017-01-12 | Energy accumulation device for fly wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020786.7A CN106787409A (en) | 2017-01-12 | 2017-01-12 | Energy accumulation device for fly wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106787409A true CN106787409A (en) | 2017-05-31 |
Family
ID=58947744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710020786.7A Pending CN106787409A (en) | 2017-01-12 | 2017-01-12 | Energy accumulation device for fly wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106787409A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799045A (en) * | 2009-02-06 | 2010-08-11 | 卓向东 | Anti-offcenter magnetic suspension bearing |
| CN202612391U (en) * | 2012-02-28 | 2012-12-19 | 上海大学 | Five-freedom-degree all-permanent-magnet suspension bearing rotor system |
| US20130207496A1 (en) * | 2010-10-22 | 2013-08-15 | Spinlectrix Inc. | System and method for performing magnetic levitation in an energy storage flywheel |
| CN105024479A (en) * | 2015-07-23 | 2015-11-04 | 江苏大学 | Flywheel energy storing device |
| CN206422646U (en) * | 2017-01-12 | 2017-08-18 | 陈科枫 | Energy accumulation device for fly wheel |
-
2017
- 2017-01-12 CN CN201710020786.7A patent/CN106787409A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799045A (en) * | 2009-02-06 | 2010-08-11 | 卓向东 | Anti-offcenter magnetic suspension bearing |
| US20130207496A1 (en) * | 2010-10-22 | 2013-08-15 | Spinlectrix Inc. | System and method for performing magnetic levitation in an energy storage flywheel |
| CN202612391U (en) * | 2012-02-28 | 2012-12-19 | 上海大学 | Five-freedom-degree all-permanent-magnet suspension bearing rotor system |
| CN105024479A (en) * | 2015-07-23 | 2015-11-04 | 江苏大学 | Flywheel energy storing device |
| CN206422646U (en) * | 2017-01-12 | 2017-08-18 | 陈科枫 | Energy accumulation device for fly wheel |
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