CN113991933B - Compact flywheel energy storage battery - Google Patents
Compact flywheel energy storage battery Download PDFInfo
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- CN113991933B CN113991933B CN202111213423.8A CN202111213423A CN113991933B CN 113991933 B CN113991933 B CN 113991933B CN 202111213423 A CN202111213423 A CN 202111213423A CN 113991933 B CN113991933 B CN 113991933B
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- flywheel
- end cover
- energy storage
- permanent magnet
- storage battery
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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
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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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
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a compact flywheel energy storage battery, which belongs to the technical field of electric energy storage and comprises: the energy storage flywheel is formed by stacking at least one hollow flywheel disc on a flywheel rotating shaft; the upper end cover and the lower end cover are respectively arranged on the upper side and the lower side of the energy storage flywheel; the shell is fixed between the upper end cover and the lower end cover and forms a vacuum cavity with the upper end cover and the lower end cover; the high-speed motor is arranged between the upper end cover and the energy storage flywheel or between the energy storage flywheel and the lower end cover; mechanical and permanent magnetic bearings; the high-speed motor is fixed on the step-shaped rotating shaft and is provided with an annular water channel. The flywheel energy storage battery has the advantages of reduced axial length, compact structure, simplicity, reliability and reduced material consumption. In the same vacuum cavity, a flywheel energy storage battery with larger capacity can be formed by stacking more hollow flywheel discs; different flywheel energy storage batteries can also form a flywheel energy storage battery pack with larger capacity and larger power through flanges arranged on the upper end cover and the lower end cover.
Description
Technical Field
The invention belongs to the technical field of electric energy storage, and particularly relates to a compact flywheel energy storage battery.
Background
With the continuous development of new energy technologies, energy storage technologies have attracted more attention. In the existing energy storage technology, the flywheel energy storage device has the advantages of good dynamic performance, no secondary pollution and the like, so that the flywheel energy storage device gets more and more attention. The flywheel energy storage device comprises a flywheel rotor, a generator, a permanent magnet bearing, a mechanical bearing and a motor shell, and in the limited space of the vacuum machine cavity, how to improve the heat dissipation efficiency and how to select the structure and the installation mode adopted by each part, so that the space of the vacuum machine cavity is fully and reasonably applied, and the flywheel energy storage device becomes a problem which is paid attention to by the public.
In addition, after the flywheel energy storage device is designed, the energy storage capacity and the motor power value can only be changed within a small range, and the flywheel energy storage device cannot be applied to occasions with larger capacity and larger power, and needs a flywheel energy storage battery with larger volume, so that the problems of increase of occupied area, difficulty in carrying and the like can be caused. Therefore, it is also worth paying attention to how to improve the universality of flywheel energy storage battery application.
Disclosure of Invention
Aiming at the defects and improvement requirements of the prior art, the invention provides a compact flywheel energy storage battery, which is used for reducing the axial length of a rotating shaft of the flywheel energy storage battery, improving the first-order critical rotating speed and the rigidity of a rotor, enabling the overall structure of the flywheel battery to be compact, reducing the usage amount of materials, increasing the heat dissipation efficiency by arranging an annular water channel at an annular winding motor, and simultaneously changing the capacity of the energy storage battery by increasing or reducing the number of hollow flywheel discs at a step-shaped rotating shaft. In addition, the upper end cover and the lower end cover of the designed motor are flat, and a plurality of flywheel batteries can be axially stacked through the flange, so that a flywheel energy storage battery with higher capacity and power is formed, the flexibility and universality of the application of the flywheel batteries are improved, and meanwhile, the advantages of cost saving and occupied area are achieved.
To achieve the above object, in a first aspect, the present invention provides a compact flywheel energy storage battery, comprising:
the energy storage flywheel is formed by stacking N hollow flywheel discs on a flywheel rotating shaft, wherein N is more than or equal to 1;
the upper end cover and the lower end cover are respectively arranged on the upper side and the lower side of the energy storage flywheel;
the shell is fixed between the upper end cover and the lower end cover and forms a vacuum cavity with the upper end cover and the lower end cover;
the high-speed motor is arranged between the upper end cover and the energy storage flywheel or between the energy storage flywheel and the lower end cover; the high-speed motor comprises a motor stator fixing ring, a motor stator, a motor rotor, an armature winding, a rotor permanent magnet and a flywheel rotor, wherein the motor stator fixing ring, the motor stator and the motor rotor are arranged from outside to inside, the armature winding surrounds the motor stator, and the rotor permanent magnet is externally attached to or embedded in the motor rotor;
the mechanical bearing is used for connecting the upper end cover, the flywheel rotating shaft and the lower end cover;
and the permanent magnet bearing is arranged between the upper end cover and the energy storage flywheel, is arranged on the upper end cover and forms an air gap with the upper surface of the energy storage flywheel.
Further, the armature winding is a ring winding; the inner side and the outer side of the motor stator are both provided with slots, and the area of the slots on the outer side is larger than or equal to that of the slots on the inner side, so that the armature winding is wound on the motor stator.
Further, the flywheel rotating shaft is in a step shape.
Furthermore, an annular groove is formed in the surface of the hollow flywheel disc.
Furthermore, two ends of the flywheel rotating shaft are respectively connected with the upper end cover and the lower end cover through the mechanical bearings, and the two ends of the flywheel rotating shaft and the mechanical bearings are embedded in the upper end cover and the lower end cover; the flywheel rotating shaft is connected with the motor rotor in an interference fit mode.
Further, the permanent magnet bearing is of an "n" type and comprises: the permanent magnet bearing comprises a permanent magnet bearing iron yoke, an outer ferromagnetic ring, an inner ferromagnetic ring and a permanent magnet ring; the permanent magnet bearing iron yoke is arranged on the upper end cover, the upper surface of the outer ferromagnetic ring is in contact with the permanent magnet bearing iron yoke, the lower surface of the outer ferromagnetic ring is in air gap with the upper surface of the energy storage flywheel, the upper surface of the inner ferromagnetic ring is in contact with the lower surface of the permanent magnet ring, the lower surface of the inner ferromagnetic ring is in air gap with the upper surface of the energy storage flywheel, and the upper surface of the permanent magnet ring is in contact with the permanent magnet bearing iron yoke.
Furthermore, an annular water channel is arranged in the motor stator fixing ring.
In a second aspect, the present invention also provides a compact flywheel energy storage battery pack, including a plurality of compact flywheel energy storage batteries as described in the first aspect; and the upper end cover and the lower end cover of each compact flywheel energy storage battery are provided with flanges in a smooth surface, and elastic gaskets are padded between the flanges and fixedly connected through connecting pieces, so that the compact flywheel energy storage battery pack is formed.
In a third aspect, the present invention also provides a compact flywheel energy storage battery, comprising:
an integrated flywheel rotor mounted vertically;
the upper end cover and the lower end cover are respectively arranged on the upper side and the lower side of the flywheel rotor;
the shell is fixed between the upper end cover and the lower end cover and forms a vacuum cavity with the upper end cover and the lower end cover;
the high-speed motor is arranged between the upper end cover and the flywheel rotor; the high-speed motor comprises a motor stator and a motor rotor which are arranged from outside to inside, an armature winding which surrounds the motor stator, and a rotor permanent magnet which is externally attached or embedded in the motor rotor, wherein the motor stator is fixed on the machine shell, and the motor rotor is fixed on a rotating shaft of the flywheel rotor;
the mechanical bearing is used for connecting the upper end cover, the rotating shaft and the lower end cover;
and the permanent magnet bearing is arranged between the upper end cover and the flywheel rotor, is arranged on the upper end cover and forms an air gap with the upper surface of the flywheel rotor.
Further, the armature winding is a ring winding; the inner side and the outer side of the motor stator are both provided with slots, and the area of the slots on the outer side is larger than or equal to that of the slots on the inner side, so that the armature winding is wound on the motor stator.
Generally, by the above technical solution conceived by the present invention, the following beneficial effects can be obtained:
(1) The invention reduces the whole axial length of the flywheel energy storage battery, particularly adopts a ring winding motor, greatly shortens the end part length of the winding, greatly reduces the end part length of the winding for a 2-pole motor, can adopt a motor with lower pole number, reduces the frequency of the motor, reduces the loss, is simple to control, and improves the cooling efficiency. And through reasonable model selection and reasonable assembly of other components in the machine cavity, the overall axial length of the flywheel energy storage battery is further reduced, the first-order critical rotation speed and the rotor rigidity of the system are improved, the overall structure of the flywheel energy storage battery is compact, and the material usage amount is reduced.
(2) The flywheel rotor part of the flywheel energy storage battery designed by the invention is formed by overlapping at least one hollow flywheel disc on a stepped flywheel rotating shaft, is fixed by interference fit, and can change the capacity of the flywheel energy storage battery by increasing or reducing the number of the hollow flywheel discs, so that the capacity of a single flywheel energy storage battery can be flexibly changed.
(3) The flywheel energy storage battery designed by the invention is provided with the annular water channel on the motor stator fixing ring, so that the heat dissipation efficiency of the motor can be greatly improved, the problem that the vacuum cavity is difficult to dissipate heat is solved, the output power of the motor can be further improved, and meanwhile, the internal structure of the flywheel energy storage battery cannot become complicated due to the addition of the annular water channel and cannot occupy the space of the motor cavity.
(4) The upper end cover and the lower end cover of the flywheel energy storage battery designed by the invention are flat, and flanges can be mounted at the upper end cover and the lower end cover, so that different flywheel energy storage batteries can be axially stacked to form a flywheel energy storage battery pack with larger capacity and larger power, the flexibility and universality of the application of the flywheel energy storage battery are improved, and the floor area is reduced.
(5) The n-shaped permanent magnet bearing designed by the invention can effectively ensure that the permanent magnets are concentric, reduce the overall eddy current loss of the motor, and meanwhile, the permanent magnet magnetic steel is arranged in the rotor core, so that the eddy current loss can also be effectively reduced.
(6) During the standby period of energy storage and the charging and discharging period, the flywheel rotor can be subjected to axial electromagnetic force, and therefore, only one pair of mechanical bearings is needed for positioning. The motor has simple and compact integral structure, saves cost and is convenient to process.
Drawings
FIG. 1 is a half-sectional view of a compact flywheel energy storage battery according to an embodiment of the present invention;
FIG. 2 is an enlarged half-sectional view of the high speed motor of FIG. 1;
FIG. 3 is an enlarged half-sectional view of the permanent magnet bearing of FIG. 1;
FIG. 4 is a half-sectional view of a plurality of flywheel energy storage cells shown in FIG. 1 stacked axially;
FIG. 5 is a half-sectional view of another compact flywheel energy storage battery provided by an embodiment of the invention;
the same reference numbers will be used throughout the drawings to refer to the same elements or structures, wherein:
1-vacuum cavity, 2-hollow flywheel disc, 3-flywheel rotating shaft, 401-upper end cover, 402-lower end cover, 5-casing, 6-high speed motor, 601-motor stator fixing ring, 602-motor stator, 603-armature winding, 604-motor rotor, 605-rotor permanent magnet, 606-annular water channel, 7-flange, 8-mechanical bearing, 9-permanent magnet bearing, 901-permanent magnet bearing iron yoke, 902-outer ferromagnetic ring, 903-inner ferromagnetic ring, 904-permanent magnet ring, 10-elastic gasket, 11-connecting piece and 12-flywheel rotor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the compact flywheel energy storage battery and the battery pack in the embodiment will be described in detail with reference to fig. 2 to 4.
As shown in fig. 1, the present invention provides a compact modular flywheel energy storage battery, which adopts a vertical installation mode and comprises: the device comprises a vacuum cavity 1, an energy storage flywheel, a flywheel rotating shaft 3, an upper end cover 401, a lower end cover 402, a casing 5, a high-speed motor 6, a mechanical bearing 8 and a permanent magnet bearing 9.
Specifically, a flywheel rotating shaft 3 penetrates through an energy storage flywheel, the energy storage flywheel and a machine shell 5 are installed between an upper end cover 401 and a lower end cover 402, a high-speed motor 6 is arranged between the energy storage flywheel and the lower end cover 402 and sleeved at the lower end of the flywheel rotating shaft 3, flanges 7 are installed on the upper end cover 401 and the lower end cover 402, and a permanent magnet bearing 9 is arranged between the upper end cover 401 and the energy storage flywheel, installed on the upper end cover 401 and forms an air gap with the upper surface of the energy storage flywheel. The energy storage flywheel is formed by stacking N hollow flywheel discs 2 on a flywheel rotating shaft 3, wherein N is more than or equal to 1.
Further, the upper end cap 401 is made of a non-ferromagnetic material, which reduces leakage flux from the mechanical bearing and reduces loss.
Furthermore, the number of the hollow flywheel discs 2 is more than or equal to 1, flywheel energy storage batteries with larger capacity are stacked through the stepped flywheel rotating shafts, are fixed in an interference fit mode, and are spaced from the shell 5 by a certain distance. It should be noted that, when N is larger than or equal to 2, the diameters of the inner holes of the N hollow flywheel discs 2 are different.
Further, two ends of the flywheel rotating shaft 3 are respectively connected with the upper end cover 401 and the lower end cover 402 through the mechanical bearings 8, and the two ends of the flywheel rotating shaft 3 and the mechanical bearings 8 are embedded in the upper end cover 401 and the lower end cover 402.
Further, the high-speed motor 6 is located between the energy storage flywheel and the lower end cover 402, and is installed on the stepped rotating shaft. It should be noted that the high-speed motor 6 may also be located between the energy storage flywheel and the upper end cover 401, and in practical engineering application, the selection may be made as appropriate according to the situation.
As shown in fig. 2, the high-speed motor 6 used in the present invention is a ring-winding permanent magnet synchronous motor, which includes a motor stator fixing ring 601, a motor stator 602, an armature winding 603, a motor rotor 604, a rotor permanent magnet 605, and a ring-shaped water channel 606.
Further, the armature winding 603 is in the form of a ring winding, both the inner side and the outer side of the motor stator 602 are grooved, the grooved area on the outer side is larger than or equal to the grooved area on the inner side, the rotor permanent magnet 605 is arranged in the motor rotor 604, the ring-shaped water channel 606 is arranged on the motor stator fixing ring 601, the motor rotor 604 is fixedly connected with the flywheel rotating shaft 3, the motor stator 602 is fixedly connected with the motor stator fixing ring 601, the motor stator fixing ring 601 is fixedly connected with the casing 5, and the high-speed motor 6 is flat as a whole.
Further, the motor stator fixing ring 601 is made of a non-ferromagnetic material, so that magnetic leakage caused by slotting on the outer side of the motor stator 602 is reduced, and loss is reduced.
Further, the flywheel spindle 3 is connected with the motor rotor 604 in an interference fit manner.
As shown in fig. 3, the permanent magnet bearing adopted by the present invention includes a permanent magnet bearing iron yoke 901, an outer magnet ring 902, an inner magnet ring 903, and a permanent magnet ring 904.
Further, the permanent magnet bearing 9 is mounted on the upper end cover 401 to form an air gap with the upper surface of the energy storage flywheel, and magnetic force in the positive direction of the Z axis is generated on the upper surface of the energy storage flywheel, so that mass unloading of the energy storage flywheel and the motor rotor is realized.
Further, the permanent magnet bearing 9 is n-shaped, wherein a permanent magnet bearing yoke 901 is mounted on the upper end cover 401, the upper surface of the outer ferromagnetic ring 902 is in contact with the permanent magnet bearing yoke 901, the lower surface of the outer ferromagnetic ring 902 forms an air gap with the upper surface of the energy storage flywheel, the upper surface of the inner ferromagnetic ring 903 is in contact with the lower surface of the permanent magnet ring 904, the lower surface of the inner ferromagnetic ring 903 forms an air gap with the upper surface of the energy storage flywheel, and the upper surface of the permanent magnet ring 904 is in contact with the permanent magnet bearing yoke 901.
As shown in fig. 4, when a plurality of flywheel energy storage batteries are stacked axially, an elastic gasket 10 and a connecting piece 11 are needed.
Further, flanges 7 are arranged on the upper end cover 401 and the lower end cover 402, elastic gaskets 10 are padded between the flanges 7 of the compact flywheel energy storage batteries, and different flywheel batteries are axially stacked through connecting pieces 11 and connected into a whole to form a flywheel energy storage battery pack with higher power and capacity.
As shown in fig. 5, another compact flywheel energy storage battery is suitable for a situation of large energy storage, and includes a vacuum chamber 1, an upper end cover 401, a lower end cover 402, a housing 5, a high-speed motor 6, a mechanical bearing 8, a permanent magnet bearing 9, and a flywheel rotor 12.
Specifically, the flywheel rotor 12 is an integral body, and is connected with an upper end cover 401 and a lower end cover 402, and the permanent magnet bearing 9 is disposed between the upper end cover 401 and the flywheel rotor 12, is mounted on the upper end cover 401, and forms an air gap with the upper surface of the flywheel rotor 12.
Further, the upper end cap 401 is made of a non-ferromagnetic material, which reduces leakage flux from the mechanical bearing and reduces loss.
Further, two ends of the flywheel rotor 12 are respectively connected with the upper end cover 401 and the lower end cover 402 through the mechanical bearings 8, and the two ends of the flywheel rotor 12 and the mechanical bearings 8 are embedded in the upper end cover 401 and the lower end cover 402.
Further, the high-speed motor 6 is located between the flywheel rotor 12 and the upper end cover 401. In one aspect, the high-speed motor 6 is similar to the high-speed motor shown in fig. 1 in structure, and also includes a motor stator fixing ring 601, a motor stator 602, a motor rotor 604, an armature winding 603 surrounding the motor stator 602, and a rotor permanent magnet 605 externally attached to or embedded in the motor rotor 604, where the motor rotor 604 is fixed on the rotating shaft of the flywheel rotor 12, and the motor stator 602 is fixed on the housing 5 through the motor stator fixing ring 601. Alternatively, when the outer diameter of the motor stator 602 is large, the high-speed motor 6 may directly mount the motor stator 602 on the housing 5 without the motor stator fixing ring 601.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A compact flywheel energy storage battery, comprising:
the energy storage flywheel is formed by stacking N hollow flywheel discs (2) on a flywheel rotating shaft (3), wherein N is more than or equal to 1; the surface of the hollow flywheel disc (2) is provided with an annular groove;
the upper end cover (401) and the lower end cover (402) are respectively arranged on the upper side and the lower side of the energy storage flywheel;
the shell (5) is fixed between the upper end cover (401) and the lower end cover (402) and forms a vacuum cavity together with the upper end cover (401) and the lower end cover (402);
the high-speed motor (6) is arranged between the upper end cover (401) and the energy storage flywheel or between the energy storage flywheel and the lower end cover (402); the high-speed motor (6) comprises a motor stator fixing ring (601), a motor stator (602) and a motor rotor (604) which are arranged from outside to inside, an armature winding (603) which surrounds the motor stator (602), and a rotor permanent magnet (605) which is externally attached to or embedded in the motor rotor (604), wherein the motor rotor (604) is fixed on the flywheel rotating shaft (3), and the motor stator (602) is fixed on the shell (5) through the motor stator fixing ring (601); the armature winding (603) is a ring winding; the inner side and the outer side of the motor stator (602) are both provided with a slot, and the area of the slot on the outer side is larger than or equal to the area of the slot on the inner side, so that the armature winding (603) can surround the motor stator (602); the motor stator fixing ring (601) is made of a non-ferromagnetic material, and an annular water channel (606) is arranged in the motor stator fixing ring (601);
the mechanical bearing (8) is used for connecting the upper end cover (401), the flywheel rotating shaft (3) and the lower end cover (402);
the permanent magnet bearing (9) is arranged between the upper end cover (401) and the energy storage flywheel, is installed on the upper end cover (401), and forms an air gap with the upper surface of the energy storage flywheel.
2. The compact flywheel energy storage battery as defined in claim 1, characterized in that the flywheel rotor shaft (3) is stepped.
3. The compact flywheel energy storage battery according to claim 2, characterized in that the two ends of the flywheel rotating shaft (3) are respectively connected with the upper end cover (401) and the lower end cover (402) through the mechanical bearings (8), and the two ends of the flywheel rotating shaft (3) and the mechanical bearings (8) are embedded in the upper end cover (401) and the lower end cover (402); the flywheel rotating shaft (3) is connected with the motor rotor (604) in an interference fit mode.
4. The compact flywheel energy storage battery as defined in claim 1, characterized in that said permanent magnetic bearing (9) is of the "n" type comprising: a permanent magnet bearing yoke (901), an outer ferromagnetic ring (902), an inner ferromagnetic ring (903) and a permanent magnet ring (904); the permanent magnet bearing iron yoke (901) is arranged on an upper end cover (401), the upper surface of the outer ferromagnetic ring (902) is in contact with the permanent magnet bearing iron yoke (901), the lower surface of the outer ferromagnetic ring is in air gap with the upper surface of the energy storage flywheel, the upper surface of the inner ferromagnetic ring (903) is in contact with the lower surface of the permanent magnet ring (904), the lower surface of the inner ferromagnetic ring is in air gap with the upper surface of the energy storage flywheel, and the upper surface of the permanent magnet ring (904) is in contact with the permanent magnet bearing iron yoke (901).
5. A compact flywheel energy storage battery pack comprising a plurality of compact flywheel energy storage batteries as claimed in any one of claims 1 to 4; the upper end cover (401) and the lower end cover (402) of each compact flywheel energy storage battery are provided with flanges (7) in a smooth surface, and elastic gaskets (10) are padded between the flanges (7) and fixedly connected through connecting pieces (11), so that the compact flywheel energy storage battery pack is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213423.8A CN113991933B (en) | 2021-10-19 | 2021-10-19 | Compact flywheel energy storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213423.8A CN113991933B (en) | 2021-10-19 | 2021-10-19 | Compact flywheel energy storage battery |
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| CN113991933A CN113991933A (en) | 2022-01-28 |
| CN113991933B true CN113991933B (en) | 2023-01-06 |
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Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| IL160823A0 (en) * | 2001-09-13 | 2004-08-31 | Lewis B Sibley | Flywheel energy storage systems |
| CN101873027A (en) * | 2009-04-27 | 2010-10-27 | 杨金玉 | Air cushion flywheel energy storage device |
| CN201956793U (en) * | 2011-02-16 | 2011-08-31 | 东南大学 | Flywheel energy storing device with permanent magnetic bearing and thrust bearing |
| GB201116109D0 (en) * | 2011-09-18 | 2011-11-02 | Univ City | Flywheel assembly |
| CN202856575U (en) * | 2012-04-09 | 2013-04-03 | 李文圣 | Multilayer disk type flywheel energy storage device |
| CA2879158C (en) * | 2012-07-30 | 2019-01-08 | Chakratec Ltd. | Magnetically coupled flywheel |
| CN103337918B (en) * | 2013-06-17 | 2016-06-15 | 哈尔滨工业大学 | High speed electric system |
| CN204258576U (en) * | 2014-10-13 | 2015-04-08 | 广东威灵电机制造有限公司 | Motor |
| CN107425647B (en) * | 2017-07-27 | 2020-02-21 | 江苏大学 | Vehicle-mounted flywheel battery adopting five-degree-of-freedom hybrid magnetic bearing |
| CH713990B1 (en) * | 2017-07-27 | 2019-01-15 | Univ Jiangsu | Vehicle flywheel battery with a 5-degree hybrid magnetic bearing. |
| CN107707069B (en) * | 2017-11-21 | 2023-09-26 | 奥铄动力科技(天津)有限公司 | Inertial energy storage generator |
| CN112018945A (en) * | 2019-05-29 | 2020-12-01 | 深圳市中科超临技术有限公司 | Modular flywheel energy storage system |
| CN110460190B (en) * | 2019-07-26 | 2021-11-19 | 上海航天控制技术研究所 | High-power magnetic suspension energy storage flywheel device |
| CN111120573B (en) * | 2019-12-26 | 2022-03-18 | 沈阳微控新能源技术有限公司 | Outdoor rescue system based on energy storage flywheel |
| CN111222279A (en) * | 2020-01-14 | 2020-06-02 | 合肥工业大学 | Design method of high-power-density motor cooling system and motor designed by method |
| CN112398269B (en) * | 2020-11-30 | 2021-08-31 | 华中科技大学 | Stator hybrid excitation flywheel energy storage motor |
| CN113037001B (en) * | 2021-02-22 | 2022-08-23 | 江苏大学 | Flywheel energy storage device based on outer rotor bearingless permanent magnet synchronous motor |
| CN113300532B (en) * | 2021-05-26 | 2022-07-12 | 华中科技大学 | Stator electro-magnetic flywheel energy storage motor |
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2021
- 2021-10-19 CN CN202111213423.8A patent/CN113991933B/en active Active
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