CN211321115U - Flywheel energy storage device - Google Patents
Flywheel energy storage device Download PDFInfo
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- CN211321115U CN211321115U CN201922212966.2U CN201922212966U CN211321115U CN 211321115 U CN211321115 U CN 211321115U CN 201922212966 U CN201922212966 U CN 201922212966U CN 211321115 U CN211321115 U CN 211321115U
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- flywheel
- magnetic suspension
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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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Abstract
The utility model provides a flywheel energy memory, include: a base; the protective shell is fixedly connected to the upper end of the base; the magnetic suspension stator is fixedly connected to the upper end of the base and is connected with the side end of the protective shell to form a hollow tubular ring; the motor stator is fixedly connected to the outer surfaces of the protective shell and the magnetic suspension stator; the flywheel is arranged inside a hollow tubular ring formed by the magnetic suspension stator and the protective shell; the rotating body support is fixedly connected to the side end, close to the protective shell, of the flywheel; the magnetic suspension rotor is fixedly connected to the side end, close to the magnetic suspension stator, of the flywheel; and the motor rotor is fixedly connected to the outer surface of the rotating body support. The utility model discloses can be used to electric power energy storage and auxiliary power system peak regulation control, economic benefits is showing.
Description
Technical Field
The utility model relates to a new forms of energy technical field, concretely relates to flywheel energy memory.
Background
The traditional power system takes coal, oil, natural gas, water energy and the like as primary energy, and due to the storable characteristics and the stable and reliable power generation technology, the supply side of the power system is controllable and adjustable. With the large-scale access of the power generation of the renewable energy sources, the renewable energy sources such as wind energy, solar energy and the like have the characteristics of non-storability and volatility as primary energy sources, so that the power generation output of the renewable energy sources such as wind power and the like has larger uncertainty, and the controllability of the power supply side of a power system is reduced. On the other hand, on the demand side, the demand of power is unbalanced in different time periods, so that the demand of power is insufficient in the daytime, the supply of power is excessive in the nighttime, and the peak-valley electricity prices are adopted in various places for adjustment, so that the actual power consumption cost of the user is increased.
In this context, large-scale energy storage techniques are in force. The mainstream energy storage technology at present is chemical battery energy storage, and then pumping energy storage and flywheel energy storage. Compared with chemical battery energy storage, the traditional flywheel energy storage has the advantages of high safety (mainly low fire risk), long service life (the charging and discharging times are not limited, the theoretical life is more than 3 times of that of the chemical battery), good environmental adaptability (no low temperature influence), low retired recovery processing cost (residual value, no processing cost) and the like; the disadvantages are that: 1. the single machine has small energy storage capacity due to the limitation of factors such as a transmission system, materials and the like; 2. because of the existence of a mechanical transmission system, mechanical abrasion exists, and the probability of mechanical failure after the operation for a certain time is higher; 3. the energy density is low; 4. the energy storage loss is high under the influence of wind resistance, transmission friction and the like.
The existing flywheel energy storage technology adopts a fixed rotating shaft technology and is accompanied with a transmission system, so that the friction resistance of a flywheel rotating body is increased, and meanwhile, because the flywheel is in a high-speed rotating operation state, the air resistance is not neglected, a large amount of energy is consumed, and the requirement of power grid peak shaving work cannot be well met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flywheel energy memory solves the problem that electric power system is not enough to the controllability of power consumption peak valley time quantum.
In order to achieve the above object, the utility model provides a following technical scheme: a flywheel energy storage device comprising: a base; the protective shell is fixedly connected to the upper end of the base; the magnetic suspension stator is fixedly connected to the upper end of the base and is connected with the side end of the protective shell to form a hollow tubular ring; the motor stator is fixedly connected to the outer surfaces of the protective shell and the magnetic suspension stator; the flywheel is arranged inside a hollow tubular ring formed by the magnetic suspension stator and the protective shell; the rotating body support is fixedly connected to the side end, close to the protective shell, of the flywheel; the magnetic suspension rotor is fixedly connected to the side end, close to the magnetic suspension stator, of the flywheel; and the motor rotor is fixedly connected to the outer surface of the rotating body support.
As an improvement of the utility model, the base is a trapezoidal support, the bottom of base is equipped with the bolt hole.
As an improvement of the present invention, the protective casing is a concave ring.
As an improvement of the utility model, the magnetic suspension stator is a convex annular electromagnet, the magnetic suspension stator is concentrically and coaxially connected with the protective shell to form a hollow tubular annular ring, and the interior of the hollow tubular annular ring is in a vacuum environment; in the vacuum environment, firstly, hydrogen or helium is used for replacing air, and then the hydrogen or helium is pumped out.
As an improvement of the utility model, motor stator is one or more stator core that evenly arranges, the motor stator surface all is equipped with stator winding.
As an improvement of the utility model, the section of the flywheel adopts a circular or elliptical high-strength material ring, and the material is one of carbon fiber, graphene, carbon nanotube, high-strength aerogel, aluminum lithium alloy or titanium alloy; the flywheel is connected with the whole surface of the rotating body bracket, the magnetic suspension rotor and the motor rotor to be subjected to smoothing treatment; the flywheel is processed by adopting prestress; the flywheel is concentrically and coaxially arranged with the protective housing.
As an improvement of the utility model, the support of turning is rigidity ring support, and the material is one of aluminum alloy, aluminium lithium alloy or titanium alloy, turn support fixed connection in the flywheel ring is close to the one end in the centre of a circle.
As an improvement of the utility model, the magnetic suspension rotor is ring type permanent magnet, the magnetic suspension rotor fixed connection in the one end in the centre of a circle is kept away from to the flywheel ring.
As an improvement of the present invention, the motor rotor is two or more permanent magnets arranged uniformly.
As an improvement of the utility model, still include: the current conversion device comprises a rectifier cabinet and an inverter; in a circuit of input current, the rectifier cabinet, the inverter and the flywheel energy storage device are sequentially connected; in the circuit for outputting current, the flywheel energy storage device, the rectifier cabinet and the inverter are connected in sequence.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention A-A;
fig. 3 is a schematic view of the position of the motor stator of the present invention;
FIG. 4 is a schematic view of the present invention B-B;
fig. 5 is a circuit flow chart of the present invention.
The components in the figure are:
the device comprises a base 1, a protective shell 2, a magnetic suspension stator 3, a motor stator 4, a flywheel 5, a rotator bracket 6, a magnetic suspension rotor 7, an electronic rotor 8, a rectifier cabinet 9-1 and an inverter 9-2.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Referring to fig. 1, a flywheel energy storage device includes: a base 1; the protective shell 2 is fixedly connected to the upper end of the base 1; the magnetic suspension stator 3 is fixedly connected to the upper end of the base 1, and the magnetic suspension stator 3 and the side end of the protective shell 2 are connected to form a hollow tubular ring; the motor stator 4 is fixedly connected to the outer surfaces of the protective shell 2 and the magnetic suspension stator 3; the flywheel 5 is arranged inside a hollow tubular ring formed by the magnetic suspension stator 3 and the protective shell 2; the swivel bracket 6 is fixedly connected to the side end, close to the protective shell 2, of the flywheel 5; the magnetic suspension rotor 7 is fixedly connected to the side end, close to the magnetic suspension stator 3, of the flywheel 5; and the motor rotor 8 is fixedly connected to the outer surface of the rotating body support 6.
The working principle and the beneficial effects of the technical scheme are as follows: the flywheel is used for storing energy, the electric energy drives the motor in a time period of surplus power supply, the electric energy is converted into kinetic energy of the flywheel for storage, and when the stored energy needs to be output, the flywheel drives the motor to convert the kinetic energy of the flywheel into the electric energy for output. Compared with other energy storage technologies, the flywheel has high energy storage safety and long service life.
The utility model discloses an in the embodiment, base 1 is trapezoidal support, is equipped with four bases altogether, and 90 contained angles are evenly arranged between the base, base 1's bottom is equipped with the bolt hole.
The working principle and the beneficial effects of the technical scheme are as follows: the base is used for supporting whole device, sets up four strong points more firm, and the bolt hole is used for with ground fixed connection, easy to assemble.
Referring to fig. 2, in an embodiment of the present invention, the protective housing 2 is a concave ring.
Referring to fig. 2, in an embodiment of the present invention, the magnetic suspension stator 3 is a convex annular electromagnet, and is made of a strong magnetic material of neodymium iron boron, and the magnetic suspension stator 3 is concentrically and coaxially connected to the protective casing 2 to form a hollow tubular annular ring, and the inside of the hollow tubular annular ring is in a vacuum environment; in the vacuum environment, helium is firstly utilized to replace air, and then the helium is pumped out.
The working principle and the beneficial effects of the technical scheme are as follows: the magnetic suspension stator and the protective shell form a hollow tubular ring which is used as a motion space of the flywheel, the magnetic suspension stator enables the flywheel not to be transmitted with other parts, the motion space is a vacuum environment, and small molecule gas such as helium is utilized, so that kinetic energy loss generated by collision between vacuum residual gas molecules and the flywheel is reduced, wind resistance and transmission friction when the flywheel moves are greatly reduced, energy storage loss is reduced, and economic benefit is improved.
Referring to fig. 3, in an embodiment of the present invention, the motor stator 4 is three stator cores uniformly arranged, and the outer surface of the motor stator 4 is provided with stator windings.
The working principle and the beneficial effects of the technical scheme are as follows: the electronic stator generates an alternating magnetic field to alternately generate adsorption and repulsion effects on the motor rotor.
In an embodiment of the present invention, the section of the flywheel 5 is a circular ring made of carbon fiber material, and the flywheel 5 is connected with the rotor bracket 6, the magnetic suspension rotor 7 and the motor rotor 8 to perform a smoothing process on the whole surface; the flywheel 5 is processed by adopting prestress; the flywheel 5 is arranged concentrically and coaxially with the protective housing 2.
The working principle and the beneficial effects of the technical scheme are as follows: according to the calculation formula of the kinetic energy, the kinetic energy stored when the flywheel rotates at a high speed is in direct proportion to the moment of inertia (J ═ 0.5-1) × M ^ R ^2) of the flywheel and the angular speed of the flywheel rotation. The carbon fiber material with high tensile specific strength is selected as the flywheel material, so that the limit angular speed which can be borne by the flywheel can be further improved, and the total energy storage amount of the flywheel is increased. The whole body is subjected to surface treatment to reduce the surface roughness and further reduce the wind resistance, and the flywheel is processed by adopting a prestress process to increase the strength of the flywheel.
In an embodiment of the present invention, the swivel bracket 6 is a rigid ring bracket made of titanium alloy, and the swivel bracket 6 is fixedly connected to one end of the flywheel 5, which is close to the center of the circle.
The working principle and the beneficial effects of the technical scheme are as follows: the flywheel is a carbon fibre material, which is a flexible material that must be attached to a rigid material in order to form a closed loop.
In an embodiment of the present invention, the magnetic suspension rotor 7 is a circular permanent magnet, and is made of neodymium iron boron strong magnetic material, and the magnetic suspension rotor 7 is fixedly connected to the end of the flywheel 5, which is far away from the center of the circle.
The working principle and the beneficial effects of the technical scheme are as follows: the interaction of the magnetic suspension stator and the magnetic suspension rotor realizes the suspension of the flywheel, and greatly reduces the transmission loss of the flywheel.
In an embodiment of the present invention, the motor rotor 8 is three permanent magnets arranged uniformly.
The working principle and the beneficial effects of the technical scheme are as follows: the motor rotor mainly has the function of attracting and repelling alternating magnetic poles of a motor stator in the energy storage process to drive a flywheel to rotate; in the discharging process, the magnetic field lines of the iron core are changed under the action of the motor stator iron core, induced electromotive force is generated, and alternating current is further formed.
Referring to fig. 5, in an embodiment of the present invention, the present invention further includes: the current conversion device comprises a rectifier cabinet 9-1 and an inverter 9-2; in a circuit of input current, the rectifier cabinet 9-1, the inverter 9-2 and the flywheel energy storage device are connected in sequence; in a circuit for outputting current, the flywheel energy storage device, the rectifier cabinet 9-1 and the inverter 9-2 are connected in sequence.
The working principle and the beneficial effects of the technical scheme are as follows: in the energy storage process, the power frequency alternating current electric energy to be stored is output as direct current through the rectifier cabinet, and is converted into high-frequency alternating current through the inverter, the driving motor (under the condition, the motor is used as a motor) drives the flywheel to rotate in an accelerating way, and the electric energy is converted into the kinetic energy of the flywheel; in the discharging process, the flywheel drives the motor (under the condition, the motor is used as a generator) to rotate, the kinetic energy of the flywheel is converted into electric energy, high-frequency alternating current is emitted, and the alternating current is rectified, inverted and the like to form power frequency alternating current, so that the power supply side of a power system can be conveniently and reasonably regulated and controlled in the peak-valley time period of power consumption.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit of the present invention.
Claims (10)
1. A flywheel energy storage device, comprising:
a base (1);
the protective shell (2), the protective shell (2) is fixedly connected to the upper end of the base (1);
the magnetic suspension stator (3) is fixedly connected to the upper end of the base (1), and the magnetic suspension stator (3) is connected with the side end of the protective shell (2) to form a hollow tubular ring;
the motor stator (4), the said motor stator (4) is fixedly connected to the said protective casing (2) and external surface of the magnetic suspension stator (3);
the flywheel (5), the said flywheel (5) is set up in the said magnetic suspension stator (3) and the said protective housing (2) make up the inside of hollow tubular circular ring;
the swivel bracket (6), the swivel bracket (6) is fixedly connected to the side end of the flywheel (5) close to the protective shell (2);
the magnetic suspension rotor (7), the magnetic suspension rotor (7) is fixedly connected to the side end of the flywheel (5) close to the magnetic suspension stator (3);
the motor rotor (8), motor rotor (8) fixed connection in turn support (6) surface.
2. A flywheel energy storage device as claimed in claim 1, wherein:
the base (1) is a trapezoidal support, and a bolt hole is formed in the bottom end of the base (1).
3. A flywheel energy storage device as claimed in claim 1, wherein:
the protective shell (2) is a concave ring.
4. A flywheel energy storage device as claimed in claim 1, wherein:
the magnetic suspension stator (3) is a convex annular electromagnet, the magnetic suspension stator (3) is concentrically connected with the protective shell (2) to form a hollow tubular annular ring, and the interior of the hollow tubular annular ring is in a vacuum environment;
in the vacuum environment, firstly, hydrogen or helium is used for replacing air, and then the hydrogen or helium is pumped out.
5. A flywheel energy storage device as claimed in claim 1, wherein:
the motor stator (4) is one or more stator cores which are uniformly arranged, and stator windings are arranged on the outer surface of the motor stator (4).
6. A flywheel energy storage device as claimed in claim 1, wherein:
the section of the flywheel (5) adopts a circular or elliptical high-strength material ring, and the material is one of carbon fiber, graphene, carbon nano tube, high-strength aerogel, aluminum-lithium alloy or titanium alloy; the flywheel (5) is connected with the rotating body bracket (6), the magnetic suspension rotor (7) and the motor rotor (8) to carry out smooth treatment on the whole surface; the flywheel (5) is processed by adopting prestress; the flywheel (5) is arranged concentrically with the protective housing (2).
7. A flywheel energy storage device as claimed in claim 1, wherein:
the swivel support (6) is a rigid ring support made of one of aluminum alloy, aluminum-lithium alloy or titanium alloy, and the swivel support (6) is fixedly connected to one end, close to the circle center, of the ring of the flywheel (5).
8. A flywheel energy storage device as claimed in claim 1, wherein:
the magnetic suspension rotor (7) is a circular permanent magnet, and the magnetic suspension rotor (7) is fixedly connected to one end, far away from the circle center, of the circular ring of the flywheel (5).
9. A flywheel energy storage device as claimed in claim 1, wherein:
the motor rotor (8) is two or more permanent magnets which are uniformly arranged.
10. A flywheel energy storage device as claimed in claim 1, further comprising:
the current conversion device comprises a rectifier cabinet (9-1) and an inverter (9-2); in a circuit of input current, the rectifier cabinet (9-1), the inverter (9-2) and the flywheel energy storage device are sequentially connected; in a circuit for outputting current, the flywheel energy storage device, the rectifier cabinet (9-1) and the inverter (9-2) are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922212966.2U CN211321115U (en) | 2019-12-11 | 2019-12-11 | Flywheel energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922212966.2U CN211321115U (en) | 2019-12-11 | 2019-12-11 | Flywheel energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211321115U true CN211321115U (en) | 2020-08-21 |
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ID=72080802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922212966.2U Active CN211321115U (en) | 2019-12-11 | 2019-12-11 | Flywheel energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211321115U (en) |
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2019
- 2019-12-11 CN CN201922212966.2U patent/CN211321115U/en active Active
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