CN116557242A - Gravity element energy storage system based on solid module - Google Patents
Gravity element energy storage system based on solid module Download PDFInfo
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- CN116557242A CN116557242A CN202310516066.5A CN202310516066A CN116557242A CN 116557242 A CN116557242 A CN 116557242A CN 202310516066 A CN202310516066 A CN 202310516066A CN 116557242 A CN116557242 A CN 116557242A
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- 230000005484 gravity Effects 0.000 title claims abstract description 180
- 238000004146 energy storage Methods 0.000 title claims abstract description 68
- 239000007787 solid Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000005381 potential energy Methods 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000002910 solid waste Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 4
- 238000012549 training Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 15
- 238000010248 power generation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
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
- F03G3/00—Other motors, e.g. gravity or inertia motors
- F03G3/087—Gravity or weight motors
- F03G3/094—Gravity or weight motors specially adapted for potential energy power storage stations; combinations of gravity or weight motors with electric motors or generators
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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
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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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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to an energy storage system of a gravity element based on a solid module, which comprises the gravity element, a low-altitude gravity element storage yard and a high-altitude gravity element storage yard; the escalator group is connected in series and in parallel between the low-altitude gravity element storage yard and the high-altitude gravity element storage yard; a control unit and an actuating mechanism are arranged at the joint of the two escalator in series in the process of transferring the gravity element from bottom to top or from top to bottom; the gravity element ascends, the escalator group consumes external electric power, and the electric energy is converted into potential energy of the gravity element by a driving motor of the escalator group; the gravity element is put down from the escalator group to drive the driving motor thereof to generate electricity. The invention utilizes a mature escalator system, uses all experience training and development achievements accumulated in escalator industry, and is used in an energy storage system after transformation so as to improve the reliability of the system.
Description
Technical Field
The present invention relates to the field of energy storage systems based on gravitational elements of solid modules.
Background
The energy storage system is a system for storing electric energy, such as storing electric energy when the electric energy is used in a valley, and releasing the electric energy stored before when the electric energy is used in a peak. If some energy storage systems are used for carrying the energy storage units from low to high during energy storage, the potential energy of the energy storage units is increased, and the heat energy is released to generate electricity during electricity utilization peaks. For example, patent application number CN202211190647.6, a solid gravity flow carrying and energy storage device and energy storage system, patent publication CN114649819a discloses a gravity module energy storage and operation method, and patent publication number CN113653612a discloses a solid gravity flow carrying device, gravity energy storage element and energy storage system, respectively, and an energy storage system. These gravity energy storage systems have the following disadvantages:
the existing gravity energy storage system uses a gravity module of 50-200 tons, whether a winch, a trailer or other mechanical transmission structures are used, the gravity module is operated upwards on a slope of about 100-400 meters in the vertical direction, or the gravity module is operated downwards, the difficulty is increased, the cost is increased, the system maturity needs a great deal of time, a great deal of engineering application is needed to be optimized, the manufacture of system equipment, the construction of system facilities, the operation of the system and the like are all carried out, so that the prior art of sufficient maturity and stability is not available until the present, the safety has countless unknown factors, and the commercial operation of the system cannot be ensured.
In addition, the fault tolerance design of the current solid energy storage system is not considered enough. For a system operated by heavy machinery, once the system is normally handled, particularly an electric power system, because of certain natural, artificial or unpredictable factors, the system has higher requirements on the stability of the system in relation to national countries, and enough complete schemes can be provided.
The existing system has too high requirements on construction sites, and the gravity elements with the weight of 50 tons to 200 tons reliably and stably operate for 50 years on a slope of 100 meters to 400 meters, so that the requirements on all layers of the system are too high.
Gravity energy storage elements are designed to be too complex.
Disclosure of Invention
The present invention addresses the above-described deficiencies of current gravity energy storage systems by providing a solid module-based gravity element energy storage system that utilizes an escalator to transport gravity energy storage elements from a low elevation yard to a high elevation yard.
The technical scheme adopted by the invention for realizing the technical purpose is as follows: an energy storage system based on a gravity element of a solid module comprises the gravity element, a low-altitude gravity element storage yard and a high-altitude gravity element storage yard; the escalator group is connected in series and in parallel between the low-altitude gravity element storage yard and the high-altitude gravity element storage yard; a gravity element transferring control device is arranged at the joint of the two escalator in series and used for transferring the gravity element from bottom to top or from top to bottom; the gravity element ascends, the escalator group consumes external electric power, and the electric energy is converted into potential energy of the gravity element by a driving motor of the escalator group; the gravity element is put down from the escalator group to drive the driving motor thereof to generate electricity.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the low-altitude gravity element storage yard and the high-altitude gravity element storage yard are respectively provided with a plurality of layers of stacking slide rails.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the low-altitude gravity element storage yard and the high-altitude gravity element storage yard are arranged in a permanent building, and the storage yard of the internal gravity element consists of a plurality of layers of steel structures.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the gravity element transferring control device also comprises a gravity element pushing mechanism.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: and covering the photovoltaic panel assembly above the escalator group.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the escalator group is built on a slope of 15-75 degrees, and the vertical height from the low-altitude gravity element storage yard to the vertical height of the high-altitude gravity element storage yard is 20-1000m.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: a gravity element temporary storage yard is also arranged at the connecting part of the two escalators in series.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the weight of the gravity element is 100KG to 500KG.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the overall outline of the appearance of the gravity element is a cuboid, and a firm shell is arranged outside the gravity element.
Further, in the above-mentioned energy storage system based on the gravity element of the solid module: the gravity element shell is filled with solid waste; the solid waste comprises construction waste, earth sand stone and waste tailings; the packing material with high density is placed at the bottom of the casing, and the packing material with low density is placed at the upper part of the casing.
The invention utilizes a mature escalator system, uses all experience training and development achievements accumulated in escalator industry, and is used in an energy storage system after transformation so as to improve the reliability of the system.
The invention will now be described in detail with reference to the drawings and to specific embodiments.
Drawings
FIG. 1 is a block diagram of an energy storage system based on a gravity element of a solid module.
Detailed Description
The present embodiment is an energy storage system based on a gravity element of a solid module, as shown in fig. 1: including a gravity element, a low elevation gravity element yard 100 and a high elevation gravity element yard 101; the height difference between the two yards is 20-1000 meters, and the escalator groups 400-1, 400-2 … -400-N, wherein the gravity elements are conveyed between the low-altitude gravity element yard 100 and the high-altitude gravity element yard 101, and one group of escalator groups 400-1, 400-2 … -400-N are connected in series and in parallel between the low-altitude gravity element yard 100 and the high-altitude gravity element yard 101. Where N is a natural number determined from the low elevation gravity element yard 100 and the high elevation gravity element yard 101.
The connection part of the two escalators 400-i in series is provided with a control unit and an actuating mechanism 200 in the process of transferring the gravity elements from bottom to top or from top to bottom; n is the number of hand-held elevators determined according to the distance between the low elevation gravity element yard 100 and the high elevation gravity element yard 101, i being an integer between 1 and N.
In this embodiment, the escalator 400-i is a transport mechanism similar to an escalator, which can transport the above goods like an escalator, when the escalator is upward, the electric energy is consumed by the motor to lift the object (referred to as a gravity element here), when the gravity element is above, the gravity element drives the steps similar to a crawler belt (a conveyor belt) to move downward under the driving of the gravity element, and at this time, the crawler belt drives the motor to generate power and to be connected. Unlike conventional escalator, conventional escalator has no power generation function, and the motor is controlled by modifying the control mode, and after the motor is modified, the elevator is rotated to move up the mountain by a gravity element, and when the gravity element falls down, the elevator is rotated reversely to generate power. The "escalator" referred to herein is the exact same as the existing escalator, in terms of the dimensions of the steps, the size of the load (which can be further increased), the motor power, the manner of rotation, the safety measures, etc., by means of the existing escalator principles and components.
The gravity element ascends, the escalator groups 400-1 and 400-2 … and 400-N consume external power, and the driving motors of the escalator groups 400-1 and 400-2 … and 400-N convert electric energy into potential energy of the gravity element; the gravity element is put down from the escalator groups 400-1, 400-2 …, 400-N to drive the driving motor thereof to generate electricity.
The escalator 400-i is utilized to convey the gravity energy storage element, the low-altitude gravity element storage yard 100 and the high-altitude gravity element storage yard 101 convert electric energy into mechanical energy to convert potential energy, charging is completed, and the low-altitude gravity element storage yard 100 and the high-altitude gravity element storage yard 101 utilize self gravity of the gravity element to drive a motor, so that power generation is completed. The main idea in this embodiment is: and the gravity energy storage is completed by using mature escalator equipment. The commercial escalator originates in 1900 and has 120 years so far, and in the development process of 120 years, a great deal of engineering experience is accumulated, and innumerable experiences and training in safety are provided, so that the elevator equipment industry is mature. Thus, the elevator components are also sufficiently mature and cost competitive.
As an energy storage system, as shown in fig. 1, the system also has a control device 300-1 … -N for controlling, safety, operation monitoring and the like of elevator driving, gravity power generation and the like, a power converter 500-1 … -500-N for realizing power storage and release of a power grid, an AI control center 600, a system control power supply center 700, a power grid 800 and a power dispatching center 900 as well as an internet of things communication control center 1000. As shown in fig. 1. As for the AI control center 600 and the system control power supply center 700, each power generation enterprise is configured, so that the control and debugging of the gravity element energy storage system of the whole solid module are realized, and the system works most smoothly and saves energy most.
A power line connection is provided between the power grid 800 and the power converters 500i, so that the power grid 800 supplies power to the motors of the respective escalator groups 400-1 and 400-2 … and 400-N through the power converters 500-1 and … -N, or the motors of the respective escalator groups 400-1 and 400-2 … and 400-N generate power and then are connected to the grid.
In this embodiment, the multiple escalators are connected in series and in parallel, like the battery cores of the lithium batteries are connected in series and in parallel, and because the elevator industry is a mature industry of 120 years at most, the elevator industry is mature in design, equipment manufacturing and engineering construction. Low cost, high reliability and relatively low risk. Compared with other gravity energy storage schemes, the gravity energy storage device has the advantages of integrating the gravity unit into zero (20T-200T is converted into 100KG to 500 KG), simplifying the gravity unit into a complex gravity unit (heavy equipment is changed into common transportation equipment), dispersing engineering difficulty and reducing operation and maintenance cost.
In the aspect of safety design as the application of gravity energy storage, the gravity element transferring control device 200 with a control unit and an actuating mechanism is arranged at the joint of two escalators in series, and the main function is to ensure that the smooth transferring flow of the gravity element is transferred to the next elevator device in the process of transferring the gravity element from bottom to top or from top to bottom; in addition, a temporary gravity element storage yard is further arranged at the joint of the two elevators, so that the gravity energy storage element can be temporarily stored when accidents caused by various artificial and natural reasons occur, and the gravity element for emergency treatment is in an emergency state and is in a temporary storage yard 201.
The gravity element is driven to move upwards, namely, the external electric power such as a power grid is consumed, the driving motor of the escalator 400-i converts electric energy into mechanical energy, the mechanical energy conveys the gravity element to a high-altitude gravity element storage yard, the mechanical energy is converted into potential energy, and the process is equivalent to pumping water from a low-altitude reservoir to a high-altitude reservoir in a pumped storage power station and is equivalent to a charging process. When discharging is needed, the high-altitude gravity element is put down from the escalator to drive the driving motor to generate power, and the process is equivalent to the process of putting water in the high-altitude reservoir to the low-altitude reservoir in the pumped storage power station, and is equivalent to the process of generating power and discharging. These are all implemented under unified debugging and control of the AI control center 600, the system control power supply center 700.
The high-altitude and low-altitude gravity element storage yard is provided with a plurality of layers of stacking slide rails, and is uniformly controlled by a control center; the storage yard of the high-altitude and low-altitude gravity elements is formed by a plurality of layers of steel structures in a permanent building with the design life of 50 years, and for the standardized gravity energy storage elements to run in the storage yard, the storage yard moves in parallel on a track with pulleys, and after one layer is fully stacked, the storage yard is lifted to the last layer, and so on and vice versa; where the gravitational element is transferred from the yard to the escalator, it is accomplished by a specific pushing mechanism.
All the escalators work in indoor environment at the position on the slope, the photovoltaic plate assembly can be covered above the elevators connected in series, and the building is similar to a photovoltaic car shed, so that the protection level of the elevators, the protection level of power generation and the protection level of motor equipment can be reduced, the failure rate can be reduced, the operation and maintenance cost can be reduced, and the power generated in the daytime can be used for providing electric energy for the system when the photovoltaic plate is used for making an upper cover. During charging and discharging, a start control system is arranged to ensure smooth transition of the system in the working mode conversion process.
Because the greatest cost of the gravity energy storage system is the gravity energy storage element, the gravity energy storage element is simplified most, the structure is reliable most, the cost is lowest, and the service life is longest. The design life is 50 years, so the design of reliability and weather resistance is required for the gravity energy storage unit.
The whole gravity energy storage system is controlled by a full intelligent AI, a centralized control center and a dispatching center of a national power department are networked, and the system can be used for peak clipping and valley filling of a power grid, and can also form a wind-solar energy storage micro-grid system and full AI dispatching.
When the energy storage system discharges outwards, the generated energy is subjected to inversion, frequency conversion, boosting and surfing, and when the energy storage system charges, electricity is taken from a power grid, and the escalator is driven to start to carry the gravity element to climb the mountain; in this embodiment, the control system separately supplies power, including: the transmission part of the serial connection part, the high-altitude and low-altitude storage yard part and the office part between the escalators. These electrical and thermal energy conversions are accomplished by the power converter 500i under the scheduled control of the AI control center 600, the system control power center 700.
Maintaining the optimal high reliability of the system, the prior mature escalator needs to be maximally adopted, such as: safety design, reliability design, transmission element standardization design, fool-proof accident-proof design, low-power consumption design, operation and maintenance design and the like; in the power transmission and transformation link, the achievements of the existing photovoltaic system are borrowed; the gravity energy storage system can achieve 80% -85% of efficiency, the cost performance is superior to that of pumped storage, the design life is 50 years, and the gravity energy storage system is not a challenge and is a conventional requirement; the method is suitable for building a slope with 15-75 degrees, the geological condition of the slope is required to meet the requirement of building a permanent facility for 50 years, the vertical height of the slope is recommended to be about 20-1000 meters, the top of the slope is provided with the condition suitable for building a gravity element storage yard, and the area of the condition is determined by the capacity of a designed energy storage system.
In this embodiment, the number of escalators is related to the distance between slopes of the high-altitude and low-altitude gravity element yards, for example, when the vertical height difference between a certain high-altitude gravity element yard and a certain low-altitude gravity element yard is 400m, the inclination angle is 60 degrees, the slope length is about 1100m, and if one escalator is 50m, 22 escalators are required to be connected in series from the low-altitude gravity element yard to the high-altitude gravity element yard. To improve the working efficiency, 22 other escalators can be connected in parallel.
In this embodiment, the weight of the gravity element is similar to the weight level of a human body, the overall outline of the appearance is cuboid, the exterior of the gravity element is provided with a layer of firm shell, the gravity element is normally made of cheap metal iron wholly or partially, and solid wastes such as construction waste, earth sand, waste tailings and the like can be filled in the gravity element, so that local materials are normally obtained. The gravity element is also provided with a small mechanism which is convenient to hoist, for example, lifting hook connecting holes for hoisting are arranged on two sides or the top of the gravity element. The design principle of the gravity element is to minimize the manufacturing cost and the transportation cost. In the manufacture of the gravitational element, the centre of gravity can be lowered, that is to say, a high-density filling can be placed at the bottom of the gravitational element and a low-density filling can be placed at the upper part of the gravitational element; to lower the gravity center of the gravitational element;
at the junction of two adjacent escalator, can design the fortune dimension passageway as required, make things convenient for the system to erect the construction to and daily fortune dimension. The gravity element transferring control device 200 and the gravity element emergency temporary storage yard 201 are mainly provided, the gravity element transferring control device 200 is used for transferring the gravity element between two adjacent escalator, and the gravity element emergency temporary storage yard 201 is used for transferring the gravity element transported to the gravity element transferring control device 200 to the temporary storage yard in emergency.
The embodiment has the following characteristics:
1. splitting a large system into small systems, then, carrying out power generation by the dispersed small systems, and then, polymerizing the power generation by the dispersed small systems, and then, feeding the power into a power grid.
2. The method is characterized in that a mature industrial equipment (escalator) system is utilized, all experience training and development achievements accumulated in the escalator industry by human beings for 120 years are utilized, and the modified system is used in an energy storage system;
3. and the AI is utilized to uniformly control and schedule the whole energy storage and power system, and the AI and the power system are perfectly integrated into a whole.
4. The fault tolerance of the system is fully considered, so that the reliability of the system is improved.
Claims (10)
1. An energy storage system based on a gravity element of a solid module comprises a gravity element, a low-altitude gravity element storage yard (100) and a high-altitude gravity element storage yard (101); the method is characterized in that: the system also comprises escalator groups (400-1, 400-2 …, 400-N) with gravity elements transmitted between the low-altitude gravity element storage yard (100) and the high-altitude gravity element storage yard (101), wherein one group of escalator groups (400-1, 400-2 …, 400-N) are connected in series and parallel between the low-altitude gravity element storage yard (100) and the high-altitude gravity element storage yard (101);
a gravity element transferring control device (200) is arranged at the joint of the two escalators (400-i) in series in the process of transferring the gravity elements from bottom to top or from top to bottom;
the gravity element ascends, the escalator groups (400-1, 400-2 …, 400-N) consume external electric power, and the driving motors of the escalator groups (400-1, 400-2 …, 400-N) convert electric energy into potential energy of the gravity element; the gravity element is put down from the escalator groups (400-1, 400-2 and …, 400-N) to drive the driving motor thereof to generate electricity.
2. The solid module-based gravity element energy storage system of claim 1, wherein: the low-altitude gravity element storage yard (100) and the high-altitude gravity element storage yard (101) are respectively provided with a plurality of layers of stacking slide rails.
3. The solid module-based gravity element energy storage system of claim 2, wherein: the low elevation gravity element yard (100) and the high elevation gravity element yard (101) are in a permanent building, and the internal gravity element yard is composed of multiple layers of steel structures.
4. The solid module-based gravity element energy storage system of claim 3, wherein: the gravity element transfer control device (200) comprises a gravity element pushing mechanism.
5. The solid module-based gravity element energy storage system of claim 4, wherein: the photovoltaic panel assembly is covered over the escalator groups (400-1, 400-2 …, 400-N).
6. The solid module-based gravity element energy storage system of claim 5, wherein: the escalator groups (400-1, 400-2 and …, 400-N) are built on slopes of 15-75 degrees, and the vertical height from the low-altitude gravity element storage yard (100) to the vertical height of the high-altitude gravity element storage yard (101) is 20-1000m.
7. The solid module-based gravity element energy storage system of claim 6, wherein: a gravity element temporary storage yard is also arranged at the connection of the two escalators (400-i) in series.
8. The solid module-based gravity element energy storage system according to any one of claims 1 to 7, wherein: the weight of the gravity element is 100KG to 500KG.
9. The solid module-based gravity element energy storage system of claim 8, wherein: the overall outline of the appearance of the gravity element is a cuboid, and a firm shell is arranged outside the gravity element.
10. The solid module-based gravity element energy storage system of claim 8, wherein: the gravity element shell is filled with solid waste; the solid waste comprises construction waste, earth sand stone and waste tailings; the packing material with high density is placed at the bottom of the casing, and the packing material with low density is placed at the upper part of the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310516066.5A CN116557242A (en) | 2023-05-08 | 2023-05-08 | Gravity element energy storage system based on solid module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310516066.5A CN116557242A (en) | 2023-05-08 | 2023-05-08 | Gravity element energy storage system based on solid module |
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| CN202310516066.5A Pending CN116557242A (en) | 2023-05-08 | 2023-05-08 | Gravity element energy storage system based on solid module |
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