CN108678912B - pollution-free low-attenuation elastic battery - Google Patents
pollution-free low-attenuation elastic battery Download PDFInfo
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- CN108678912B CN108678912B CN201810603407.1A CN201810603407A CN108678912B CN 108678912 B CN108678912 B CN 108678912B CN 201810603407 A CN201810603407 A CN 201810603407A CN 108678912 B CN108678912 B CN 108678912B
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- rotating shaft
- energy
- superconducting motor
- spring group
- conversion circuit
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G1/00—Spring motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G5/00—Devices for producing mechanical power from muscle energy
- F03G5/06—Devices for producing mechanical power from muscle energy other than of endless-walk type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
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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
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
the invention discloses a pollution-free low-attenuation elastic battery, which comprises a steel vacuum container, wherein a rotating shaft is vertically arranged in an inner cavity of the vacuum container, a manual charging handle is coaxially arranged at the upper end of the rotating shaft, the outer circumference of the upper end of the rotating shaft is sleeved in a bearing II, and the outer circumference of the lower end of the rotating shaft is sleeved in the bearing I; the upper half part of the rotating shaft is coaxially provided with a superconducting motor, and the superconducting motor is externally connected through a power electronic conversion circuit; the lower half part of the rotating shaft is sleeved with a spring group, the spring group is uniformly arranged in the loading auxiliary spring group moving assembly, one end of the spring group is fixed on the rotating shaft, and the other end of the spring group is fixed at the bottom of the vacuum container; the rotating shaft is connected with a brake mechanism through a clutch. The invention also discloses an elastic energy storage method. The device and the method of the invention have reliable work and high conversion efficiency.
Description
Technical Field
the invention belongs to the technical field of electric energy storage, relates to a pollution-free low-attenuation elastic battery and further relates to an elastic energy storage method.
Background
The volatility, the intermittence and the inaccuracy predictability of the power generation of the renewable energy sources, the large-scale centralized grid connection of new energy sources such as wind power, photovoltaic and the like bring huge challenges to the planning and the operation of the existing electronic system, and the energy storage technology is more and more valued as an effective technology for solving the large-scale renewable energy sources. According to different electric energy conversion modes, energy storage technologies are divided into three major categories, namely mechanical energy storage, electromagnetic energy storage and chemical energy storage, wherein a battery energy storage system has the characteristics of dynamically absorbing energy and timely releasing the energy, and the system is flexible to install, short in construction period, high in power and high in efficiency, and has been successfully applied to electronic systems.
The performance of different types of batteries is emphasized in terms of power and energy. With the technological innovation and the successful development of novel batteries, the efficiency, energy and cycle life of the batteries are remarkably improved. Among various batteries, lithium battery energy storage has the advantages of high energy density, long cycle life, high efficiency and the like, but lithium battery has the defects of poor safety, high cost, limited lithium ore resources, too large weight and price occupying most of the battery energy storage cost, and the lithium battery cannot meet a large amount of use requirements along with the popularization and application of domestic electric vehicles in the coming years. The main problems of the solar cell are low photoelectric conversion efficiency and high cost. The super capacitor has large specific power and quick charge and discharge, and has the main defect of low specific energy. Therefore, researches and developments of energy storage batteries with low cost, long service life, high efficiency and no waste pollution are receiving more and more attention from researchers.
disclosure of Invention
The invention aims to provide a pollution-free low-attenuation elastic battery, which solves the problems of low use efficiency of the whole energy, environmental pollution, single use of energy and energy loss in the process in the prior art.
Another object of the present invention is to provide a method for storing energy by elastic force.
The invention adopts the technical scheme that the pollution-free low-attenuation elastic battery comprises a steel vacuum container, wherein a rotating shaft is vertically arranged in an inner cavity of the vacuum container, a manual charging handle is coaxially arranged at the upper end of the rotating shaft, the outer circumference of the upper end of the rotating shaft is sleeved in a bearing II, and the outer circumference of the lower end of the rotating shaft is sleeved in the bearing I; the upper half part of the rotating shaft is coaxially provided with a superconducting motor, and the superconducting motor is externally connected through a power electronic conversion circuit; the lower half part of the rotating shaft is sleeved with a spring group, the spring group is uniformly arranged in the loading auxiliary spring group moving assembly, one end of the spring group is fixed on the rotating shaft, and the other end of the spring group is fixed at the bottom of the vacuum container; the rotating shaft is connected with a brake mechanism through a clutch.
the invention adopts another technical scheme that an elastic energy storage method is implemented by utilizing the pollution-free low-attenuation elastic battery according to the following steps:
Step 1) when energy needs to be stored, initial electric energy is input from the outside, power is supplied to a superconducting motor through a power electronic conversion circuit, the superconducting motor is driven to rotate, then the superconducting motor and a rotating shaft output kinetic energy to drive a spring set to move, real-time detection is carried out through a pressure sensor and a displacement sensor, when the spring set moves to a position state corresponding to a required pressure value, a controller sends a starting signal to a braking mechanism, the braking mechanism starts to work, the rotating shaft is fixed through a clutch, the superconducting motor stops moving, then external initial energy input is cut off, and the spring set obtains storage of certain potential energy;
step 2) when energy needs to be output to the outside, the controller gives a stop signal to the brake mechanism, the brake mechanism stops working, the clutch releases the rotating shaft, at the moment, the spring set starts working, the previously stored elastic potential energy is released, the obtained elastic potential energy is converted into kinetic energy, and the electric energy is output to the outside through the superconducting motor and the power electronic conversion circuit;
And 3) if no external power is available for charging, shaking the hand-operated charging handle by hand to generate kinetic energy so that the superconducting motor operates and tensions the spring set to generate potential energy, and converting the potential energy into electric energy according to the step 2) when the energy needs to be output to the outside.
The invention has the beneficial effects that:
1) the system bearing adopts a high-temperature superconducting magnetic suspension bearing or an air suspension bearing, has no or little mechanical friction, low power consumption and higher storage efficiency. The core device is arranged in the vacuum chamber and used for reducing energy loss caused by wind resistance, and the core device does not consume or consumes little stored energy along with time change and has good utilization rate.
2) The power electronic conversion mechanism can input required energy to a system, more importantly, can convert the stored energy into electric energy with various frequencies and voltage levels required by a load in the discharging process, realizes the functions of voltage transformation, voltage stabilization, frequency conversion, current control and the like, and has better use effect.
3) The spring group adopts a spring group or a torsional spring group, the plane of the spring group generates torsion, the size of a deformation angle of the spring group is in direct proportion to the torque, the spring group has high torsion and multi-angle torsion moment, can be used for a long time and is not easy to fatigue.
Drawings
FIG. 1 is a schematic diagram of the construction of a resilient battery of the present invention;
Fig. 2 is a schematic diagram of a power electronic conversion circuit according to the present invention.
In the figure, 1, a vacuum container, 2, a rotating shaft, 3, a power electronic conversion circuit, 4, a superconducting motor, 5, a loading auxiliary spring set moving component, 6, a spring set, 7, a pressure sensor, 8, a bearing I, 9, a displacement sensor, 10, a brake mechanism, 11, a clutch, 12, a bearing II, 13, a manual charging handle, 14, a PWM rectifier I, 15, a PWM inverter, 16, a PWM rectifier II and 17, a direct current conversion circuit.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Referring to fig. 1, the invention has the structure that the invention comprises a steel vacuum container 1, a rotating shaft 2 is vertically arranged in the inner cavity of the vacuum container 1, a manual charging handle 13 is coaxially arranged at the upper end of the rotating shaft 2, the outer circumference of the upper end of the rotating shaft 2 is sleeved in a bearing II 12, and the outer circumference of the lower end of the rotating shaft 2 is sleeved in a bearing I8; the upper half part of the rotating shaft 2 is coaxially provided with a superconducting motor 4 (namely, the rotating shaft 2 is used as a transmission shaft of the superconducting motor 4), and the superconducting motor 4 is externally connected through a power electronic conversion circuit 3; the lower half part of the rotating shaft 2 is sleeved with a spring group 6, the spring group 6 is uniformly arranged in the loading auxiliary spring group movement assembly 5, one end of the spring group 6 is fixed on the rotating shaft 2, and the other end of the spring group 6 is fixed at the bottom of the vacuum container 1; the rotating shaft 2 is also provided with a pressure sensor 7 and a displacement sensor 9 respectively; the rotating shaft 2 is further connected with a brake mechanism 10 through a clutch 11.
The pressure sensor 7, the displacement sensor 9, the brake mechanism 10 and the clutch 11 are all connected with a controller.
The bearing I8 and the bearing II 12 both adopt high-temperature superconducting magnetic suspension bearings or gas suspension bearings, and the bearing I8 is used for supporting the lower end of the rotating shaft 2 and bears a small part of two-degree-of-freedom radial suspension force; the second bearing 12 is used for supporting the upper end of the rotating shaft 2 and bearing most of radial suspension force with two degrees of freedom. The mechanical friction is basically not or extremely small, the power consumption is low, and the storage efficiency is high.
the superconducting motor 4 and the rotating shaft 2 rotate coaxially, and the power electronic conversion circuit 3 is used for driving the superconducting motor 4 to rotate or converting the electric energy parameters in the power generation state of the superconducting motor 4; when the superconducting motor 4 rotates, the rotating shaft 2 drives the spring set 6 to be tensioned, compressed or released and twisted, and certain potential energy is obtained. A pressure sensor 7 and a displacement sensor 9 for sensing the state of the spring set 6. When the spring group 6 passively reaches the required energy (compression pretightening force), the superconducting motor 4 stops working at the same time, the brake mechanism 10 works, and the clutch 11 fixes the rotating shaft 2, so that the spring group 6 obtains certain potential energy to be stored.
Referring to fig. 2, the power electronic converter circuit 3 has a structure (a dotted frame portion in fig. 2) including a charging portion and a discharging portion, and realizes "charging" and "discharging" respectively by two components, the charging portion includes a PWM rectifier 14 and a PWM inverter 15 connected in sequence, an input end of the PWM rectifier 14 is connected to an external power supply, an output end of the PWM inverter 15 is connected to the superconducting motor 4, and the function is to realize "charging" of the elastic battery; the discharging part comprises a second PWM rectifier 16 and a direct current conversion circuit 17 which are connected in sequence, the input end of the second PWM rectifier 16 is connected with the superconducting motor 4, the output end of the direct current conversion circuit 17 is connected with an external circuit, and the function is to realize the 'discharging' of the elastic battery. In the charging state, the first PWM rectifier 14 is in a working state, the second PWM rectifier 16 does not work, the first PWM rectifier 14 rectifies the external power into direct current, and then the direct current is inverted into alternating current with adjustable voltage and frequency by the PWM inverter 15 to drive the superconducting motor 4 to rotate, so that the spring set 6 acts to convert the electric energy into potential energy and store the potential energy. When the superconducting motor is in a discharging state, the second PWM rectifier 16 is in a working state, the first PWM rectifier 14 does not participate in working, the spring set 6 releases potential energy to drive the superconducting motor 4 to rotate, the second PWM rectifier 16 rectifies alternating current generated by the superconducting motor 4 into direct current, and the direct current is converted into direct current with constant voltage value through the direct current conversion circuit 17 to be output.
the spring group 6 adopts a torsion spring group or a clockwork spring group, is the most core part of the whole device, and directly determines the energy storage size of the whole device, wherein the selection of spring materials, the design of the structure of the spring group, the selection of the number of the spring groups and the like all influence the energy storage capacity. Firstly, the spring group 6 is wound into a plane spiral shape, then one end of the spring is fixed at the bottom of the vacuum container 1, the other end of the spring is fixed on the rotating shaft 2, when external initial energy is involved, the motor 4 is driven to rotate, then the rotating shaft 2 drives the spring group or the torsion spring to twist, the spring group 6 generates bending elastic deformation, therefore, the spring generates torsion on the plane of the spring, the spring group 6 stores certain elastic potential energy, the size of the deformation angle of the spring is in direct proportion to the torque, the spring has high torque and multi-angle torsion moment, and can be used for a long time without fatigue.
The brake mechanism 10 is arranged on the outer ring of the rotating shaft 2, when the pressure sensor 7 judges that the spring set 6 moves to the required energy, the brake mechanism 10 receives an electric signal to start working, and meanwhile, the superconducting motor 4 stops working. When the outside needs electric energy, the brake mechanism 10 is released, the elastic potential energy is converted into kinetic energy, the superconducting motor 4 is driven to rotate, and the needed electric energy is input through the power electronic conversion circuit 3.
In order to reduce energy loss (mainly friction loss) during charging and discharging, the superconducting motor 4 uses a high-temperature superconducting magnetic bearing or an air suspension bearing to reduce mechanical friction; the spring assembly 6 and the superconducting motor 4 are placed in the vacuum container 1 at the same time to reduce air friction, so that the net efficiency (input/output) of the elastic force battery can reach about 95%. Table 1 below shows the performance of the device of the present invention compared to several types of batteries currently available.
TABLE 1 comparison of Performance parameters of the device of the present invention with several types of existing batteries
As can be seen from table 1, the performance parameters of the resilient battery of the present invention are clearly superior to other types of batteries of the prior art.
The elastic energy storage method of the invention is implemented by utilizing the device according to the following steps:
Step 1) when energy needs to be stored, initial electric energy is input from the outside, power is supplied to a superconducting motor 4 through a power electronic conversion circuit 3, the superconducting motor 4 is driven to rotate, then the superconducting motor 4 and a rotating shaft 2 output kinetic energy to drive a spring set 6 to move, real-time detection is carried out through a pressure sensor 7 and a displacement sensor 9, when the spring set 6 moves to a position state corresponding to a required pressure value, a controller sends a starting signal to a brake mechanism 10, the brake mechanism 10 starts to work, the rotating shaft 2 is fixed through a clutch 11, the superconducting motor 4 stops moving, then external initial energy input is cut off, and the spring set 6 obtains storage of certain potential energy;
And step 2) when energy needs to be output to the outside, the controller gives a stop signal to the brake mechanism 10, the brake mechanism 10 stops working, the clutch 11 releases the rotating shaft 2, at the moment, the spring set 6 starts working, the previously stored elastic potential energy is uniformly released, the obtained elastic potential energy is converted into kinetic energy, and the electric energy is output to the outside through the superconducting motor 4 and the power electronic conversion circuit 3.
Step 3) the hand-operated charging handle 13 is used in special situations, and if external electric power is not available for charging, manual shaking operation is carried out in an emergency environment to charge; shaking the hand-operated charging handle 13 by hand generates kinetic energy, so that the superconducting motor 4 operates and pulls the spring set 6 to generate potential energy, and when energy needs to be output to the outside, the energy is converted into electric energy according to the step 2). The elastic battery can be charged in an emergency situation without a power supply and the like.
Claims (2)
1. A non-polluting, low-attenuation, resilient battery characterized by: the device comprises a steel vacuum container (1), wherein a rotating shaft (2) is vertically arranged in an inner cavity of the vacuum container (1), a manual charging handle (13) is coaxially arranged at the upper end of the rotating shaft (2), the outer circumference of the upper end of the rotating shaft (2) is sleeved in a bearing II (12), and the outer circumference of the lower end of the rotating shaft (2) is sleeved in a bearing I (8); the upper half part of the rotating shaft (2) is coaxially provided with a superconducting motor (4), and the superconducting motor (4) is externally connected through a power electronic conversion circuit (3); the lower half part of the rotating shaft (2) is sleeved with a spring group (6), the spring group (6) is uniformly arranged in the loading auxiliary spring group moving assembly (5), one end of the spring group (6) is fixed on the rotating shaft (2), and the other end of the spring group (6) is fixed at the bottom of the vacuum container (1); the rotating shaft (2) is also connected with a brake mechanism (10) through a clutch (11);
a pressure sensor (7) is arranged on the rotating shaft (2);
A displacement sensor (9) is arranged on the rotating shaft (2);
The pressure sensor (7), the displacement sensor (9) and the brake mechanism (10) are connected with the controller;
The bearing I (8) and the bearing II (12) adopt magnetic suspension bearings or air suspension bearings;
The spring group (6) adopts a torsion spring group or a clockwork spring group;
The power electronic conversion circuit (3) comprises a charging part and a discharging part, wherein the charging part comprises a first PWM rectifier (14) and a PWM inverter (15) which are sequentially connected, the input end of the first PWM rectifier (14) is connected with an external power supply, and the output end of the PWM inverter (15) is connected with the superconducting motor (4); the discharging part comprises a second PWM rectifier (16) and a direct current conversion circuit (17) which are sequentially connected, the input end of the second PWM rectifier (16) is connected with the superconducting motor (4), and the output end of the direct current conversion circuit (17) is connected with an external circuit.
2. an elastic energy storage method, which utilizes the pollution-free low-attenuation elastic battery of claim 1, and is characterized by comprising the following steps:
step 1) when energy needs to be stored, initial electric energy is input from the outside, power is supplied to a superconducting motor (4) through a power electronic conversion circuit (3), the superconducting motor (4) is driven to rotate, then the superconducting motor (4) and a rotating shaft (2) output kinetic energy, a spring set (6) is driven to move, real-time detection is carried out through a pressure sensor (7) and a displacement sensor (9), when the spring set (6) moves to a position state corresponding to a required pressure value, a controller sends a starting signal to a brake mechanism (10), the brake mechanism (10) starts to work, the rotating shaft (2) is fixed through a clutch (11), the superconducting motor (4) stops moving, then external initial energy input is cut off, and the spring set (6) obtains storage of certain potential energy;
Step 2) when energy needs to be output to the outside, the controller gives a stop signal to the brake mechanism (10), the brake mechanism (10) stops working, the clutch (11) releases the rotating shaft (2), at the moment, the spring set (6) starts working, previously stored elastic potential energy is released, the obtained elastic potential energy is converted into kinetic energy, and electric energy is output to the outside through the superconducting motor (4) and the power electronic conversion circuit (3);
and 3) if no external power is available for charging, shaking the manual charging handle (13) by hand to generate kinetic energy, so that the superconducting motor (4) runs and tensions the spring set (6) to generate potential energy, and when energy needs to be output to the outside, converting the potential energy into electric energy by referring to the step 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603407.1A CN108678912B (en) | 2018-06-12 | 2018-06-12 | pollution-free low-attenuation elastic battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603407.1A CN108678912B (en) | 2018-06-12 | 2018-06-12 | pollution-free low-attenuation elastic battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108678912A CN108678912A (en) | 2018-10-19 |
| CN108678912B true CN108678912B (en) | 2019-12-10 |
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| CN201810603407.1A Active CN108678912B (en) | 2018-06-12 | 2018-06-12 | pollution-free low-attenuation elastic battery |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729360Y (en) * | 2004-08-20 | 2005-09-28 | 颜宪才 | Miniature hand generator |
| CN102842987B (en) * | 2012-08-08 | 2014-07-09 | 杨长易 | Environment-friendly elastic energy storage power station |
| DE102013012138B3 (en) * | 2013-07-19 | 2014-10-23 | Veit Müller | Device for mechanical energy storage of electrical energy / Axialbewegungsspeicher collectors |
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Effective date of registration: 20210127 Address after: Room 1011, 4 / F, building 5, No. 299, Hangfu Road, Chongfu Town, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Tongxiang Beite Technology Co.,Ltd. Address before: 710048 No. 19 Jinhua South Road, Shaanxi, Xi'an Patentee before: XI'AN POLYTECHNIC University |