CN113898545A - Gravity energy storage system - Google Patents
Gravity energy storage system Download PDFInfo
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- CN113898545A CN113898545A CN202111331070.1A CN202111331070A CN113898545A CN 113898545 A CN113898545 A CN 113898545A CN 202111331070 A CN202111331070 A CN 202111331070A CN 113898545 A CN113898545 A CN 113898545A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 154
- 230000005484 gravity Effects 0.000 title claims abstract description 20
- 238000010248 power generation Methods 0.000 claims abstract description 49
- 238000005381 potential energy Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- -1 inorganic matters Substances 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model provides a gravity energy storage system, its aim at provides a simple structure, and the technology is mature, does not receive regional environment restriction, does not have the gravity energy storage system of unsettled heavy object during the energy storage. The invention relates to a gravity energy storage system, which comprises the following parts: energy storage blocks (the number is determined as required); the energy storage block moving hoisting power generation device comprises a power generation device, a moving hoisting machine and a chemical energy storage device (the number is determined according to the requirement). During energy storage, the energy storage block moves to hoist the power generation device so as to convert the electric energy into the gravitational potential energy of the energy storage block; when energy is released, the energy storage block moves to hoist the power generation device so as to convert the gravitational potential energy of the energy storage block into electric energy.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to an energy storage and release system for converting electric energy into gravitational potential energy for storage and converting the stored gravitational potential energy into electric energy.
Background
According to the introduction of patent document CN103867408A, in recent years, the electricity consumption in China increases rapidly, and the difference between the wave peak and the wave trough of the electricity consumption is obvious. In addition, renewable energy sources, such as wind energy, solar energy, generally have a determination that the amount of generated electricity fluctuates greatly. The energy storage technology introduced in journal 2021,43(7) of Hua-Feng technology and review of application prospect of Power supply side energy storage technology in articles 17-23 has wide related fields, and can be roughly divided into physical energy storage, chemical energy storage, electromagnetic energy storage and phase change energy storage according to the energy utilization form related to the energy storage process; if subdivided according to the energy storage mode, the energy storage method can be divided into pumped storage, compressed air storage, flywheel storage, gravity storage, lithium battery storage, lead-acid battery storage, superconducting storage, super capacitor storage, medium-high temperature heat storage and the like.
1-7 in journal 2021(7) of Electrical appliances and energy efficiency management technology, and 28 article "Current State of energy storage technology and prospect for Hydrogen production by Electrolysis of Water", the energy storage scale of pumped storage and compressed air energy storage is large, the technology is relatively mature, but both of them occupy large space and have certain requirements for site selection. The former is limited by hydrological and geological conditions, and the latter needs to utilize existing mines and caves. The flywheel energy storage has the characteristics of high response speed, long service life and the like, but has low energy density, high self-discharge rate and high investment cost. The hot energy storage technologies such as cold storage and heat storage are limited by the difficulty in long-time storage and long-distance transportation of hot (cold) energy, and are mainly used for storing energy at the user side so as to be consumed nearby. The electrochemical energy storage technology is the most widely applied energy storage technology and has the characteristics of large capacity, low cost, modularization and the like, wherein lithium ion batteries are taken as the main materials, but the problems of safety, waste battery recycling and the like are important factors for restricting the development of the lithium ion batteries. The electric energy storage such as super capacitor and lead is limited due to the limitation of technology, capacity and other factors.
Patent document CN201599160U proposes a method of storing energy by lifting a counterweight, wherein the efficiency can reach 90% theoretically, but in the energy storage process, the counterweight is in a suspended state, and there is a great potential safety hazard. Patent document CN206555081U also has the balancing weight in a suspended state during energy storage, and has a great potential safety hazard. The gravity energy storage system proposed in patent document CN103867408A, which relies on the mountain, has a disadvantage that the gravity energy storage system is limited by regions and can be used only by the regions of the mountain. The deep well gravity energy storage device proposed in patent document CN110439766B has the disadvantage of being subjected to geological conditions in different regions, and the geological conditions in some regions are not suitable for construction of deep wells.
Disclosure of Invention
In order to solve the above problems, the present invention provides a gravity energy storage system, and aims to provide a gravity energy storage system which has a simple structure, a mature technology, no limitation by regional environments, and no suspended weight during energy storage. The invention relates to a gravity energy storage system, which comprises the following parts: energy storage blocks (the number is determined as required); the energy storage block moving hoisting power generation device comprises a power generation device, a moving hoisting machine and a chemical energy storage device (the number is determined according to the requirement).
In order to achieve the above object, the present invention provides a gravity energy storage system, which is implemented as follows:
step 1: the energy storage block is manufactured by taking a polyhedron (such as a cuboid, a cube, a hexahedron, an irregular polyhedron and the like) as a basic shape, and on the basic shape of the polyhedron, convex and concave modified shapes can be arranged, so that the energy storage blocks are convenient to fit and stabilize when stacked and are convenient to hoist. The energy storage block can be made of reinforced concrete, inorganic matters, metals, composite materials and other materials which are solid at normal temperature, or can be made of solid materials to form an outer shell of the energy storage block, and other materials are filled in the energy storage block.
Step 2: manufacturing an energy storage block moving and hoisting power generation device, wherein the energy storage block moving and hoisting power generation device has the capability of moving energy storage blocks up and down, left and right, and front and back in a space range in an all-round manner; the integral shape of the energy storage block moving hoisting power generation device is similar to that of a tower crane, a power and power generation device is arranged in the energy storage block moving hoisting power generation device, the power and power generation device is connected with a hoisting device, an electric motor is used for hoisting the energy storage block in the hoisting process, and the energy storage block is connected with the power generation device in the descending process; the energy storage block moving and hoisting power generation device is also provided with a chemical energy storage device (part of energy is stored for the action and other operations of the device).
And step 3: the energy storage block moving hoisting power generation device is fixed on the base, and the base can be fixed or can be a mechanical platform capable of moving automatically.
And 4, step 4: and performing energy storage operation, wherein the energy storage block is moved to hoist the power generation device, and the energy storage block is stacked by using an external power supply, namely, the electric energy to be stored is converted into the gravitational potential energy of the energy storage block.
And 5: and (4) performing energy releasing operation, and removing the energy storage blocks to hoist the power generation device to detach the stacked energy storage blocks, namely converting the gravitational potential energy of the energy storage blocks into electric energy. And part of the converted electric energy is input into a chemical energy storage device in the energy storage block mobile hoisting power generation device, and the rest part is output to the outside through a power grid.
Step 6: and 4, circularly performing energy storage and energy release operation in the step 5.
Because the simple gravity energy storage system is adopted, the following beneficial effects can be obtained:
the energy storage system has simple structure and lower manufacturing cost, and the mature hoisting mechanical structure is convenient for production and maintenance, is not limited by regions and climate.
Drawings
The present invention is described in further detail below with reference to the attached drawings.
FIG. 1 is a schematic diagram of a gravity energy storage system of the present invention, wherein 1 represents energy storage blocks stacked together; 2, representing an energy storage block mobile hoisting power generation device, wherein an electric power generation integrated machine or a power generation system with a motor separated from an engine and a chemical energy storage device are matched inside the energy storage block mobile hoisting power generation device; and 3 represents a base of the energy storage block moving device.
FIG. 2 is a schematic process of the energy storage and release process of the gravity energy storage system: energy storage operation, namely stacking the energy storage blocks by using an external power supply through the energy storage block moving and hoisting power generation device, namely converting the electric energy to be stored into the gravitational potential energy of the energy storage blocks; and energy releasing operation, wherein the energy storage blocks move to hoist the power generation device to detach the stacked energy storage blocks, namely, the gravitational potential energy of the energy storage blocks is converted into electric energy.
Detailed Description
Example one:
the energy storage block is a cubic meter with the length, width and height of 5m and the density of 2t/m3And the weight of the energy storage block is 250 t. The initial energy storage block storage position and the position of the stacked energy storage blocks are in the same horizontal plane. And the energy storage block moving and hoisting power generation device is utilized to stack 64,000 energy storage blocks into an energy storage block stack with the height of 200m, the width of 200m and the length of 200 m. The theoretical stored energy is 195m 200m 2t/m3*((200-5)/2+5)m*9.8m/s2*1000＝15,670,200,000,000J＝4,352,833kWh。
Example two:
the energy storage block is a cubic meter with the length, width and height of 5m and the density of 2t/m3And the weight of the energy storage block is 250 t. The difference between the storage position altitude of the initial energy storage block and the position altitude of the stacked energy storage blocks is 100 m. The energy storage blocks are lifted to the height of 100m relative to the altitude by using the energy storage block moving and lifting power generation device, the energy storage blocks are stacked to be 200m long,the width of the energy storage block stack is 200m, and the height of the energy storage block stack is 5 m.
The theoretical stored energy is 200m 5m 2t/m3*100m*9.8m/s2*1000＝392,000,000,000＝108,888kWh。
The measuring method comprises the following steps:
step 1: the energy storage block is manufactured, the energy storage block takes a polyhedron (such as a cuboid, a cube, a hexahedron, an irregular polyhedron and the like) as a basic shape, convex and concave modification shapes can be carried out on the basic shape of the polyhedron, and the modification shapes are convenient for the stable fit and the convenient hoisting when the energy storage blocks are stacked. The energy storage block can be made of reinforced concrete, inorganic matters, metals, composite materials and other materials which are solid at normal temperature, or can be made of solid materials to form an outer shell of the energy storage block, and other materials are filled in the energy storage block.
Step 2: manufacturing an energy storage block moving and hoisting power generation device, wherein the energy storage block moving and hoisting power generation device has the capability of moving energy storage blocks up and down, left and right, and front and back in a space range in an all-round manner; the integral shape of the energy storage block moving hoisting power generation device is similar to that of a tower crane, a power and power generation device is arranged in the energy storage block moving hoisting power generation device, the power and power generation device is connected with a hoisting device, an electric motor is used for hoisting the energy storage block in the hoisting process, and the energy storage block is connected with the power generation device in the descending process; the energy storage block moving and hoisting power generation device is also provided with a chemical energy storage device (part of energy is stored for the action and other operations of the device).
And step 3: the energy storage block moving hoisting power generation device is fixed on the base, and the base can be fixed or can be a mechanical platform capable of moving automatically.
And 4, step 4: and performing energy storage operation, wherein the energy storage block is moved to hoist the power generation device, and the energy storage block is stacked by using an external power supply, namely, the electric energy to be stored is converted into the gravitational potential energy of the energy storage block.
And 5: and (4) performing energy releasing operation, and removing the energy storage blocks to hoist the power generation device to detach the stacked energy storage blocks, namely converting the gravitational potential energy of the energy storage blocks into electric energy. And part of the converted electric energy is input into a chemical energy storage device in the energy storage block mobile hoisting power generation device, and the rest part is output to the outside through a power grid.
Step 6: and 4, circularly performing energy storage and energy release operation in the step 5.
Claims (4)
1. A gravity energy storage system, comprising: energy storage blocks (the number is determined as required); the energy storage block moving hoisting power generation device comprises a power generation device, a moving hoisting machine and a chemical energy storage device (the number is determined according to the requirement).
2. A gravity energy storage system according to claim 1, wherein the energy storage blocks are based on polyhedrons (such as cuboids, cubes, hexahedrons, irregular polyhedrons, etc.), and there are convex and concave modified shapes on the base shape of the polyhedrons, which facilitate stable engagement and convenient lifting when the energy storage blocks are stacked; the energy storage block can be made of reinforced concrete, inorganic matters, metals, composite materials and other materials which are solid at normal temperature, or can be made of solid materials to form an outer shell of the energy storage block, and other materials are filled in the energy storage block.
3. The gravity energy storage system according to claim 1, wherein the energy storage block moving and hoisting power generation device has the capability of moving the energy storage block up and down, left and right, and back and forth in all directions in a space range; the integral shape of the energy storage block moving hoisting power generation device is similar to that of a tower crane, a power and power generation device is arranged in the energy storage block moving hoisting power generation device, the power and power generation device is connected with a hoisting device, an electric motor is used for hoisting the energy storage block in the hoisting process, and the energy storage block is connected with the power generation device in the descending process; the energy storage block moving and hoisting power generation device is also provided with a chemical energy storage device (part of energy is stored for the action and other operations of the device).
4. The gravity energy storage system according to claims 1 to 3, wherein during energy storage, the hoisting power generation device is moved by the energy storage block to convert the electric energy into the gravitational potential energy of the energy storage block; when energy is released, the energy storage block moves to hoist the power generation device so as to convert the gravitational potential energy of the energy storage block into electric energy.
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| CN202111331070.1A CN113898545A (en) | 2021-11-15 | 2021-11-15 | Gravity energy storage system |
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| CN202111331070.1A CN113898545A (en) | 2021-11-15 | 2021-11-15 | Gravity energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11746759B1 (en) * | 2022-04-28 | 2023-09-05 | Howard S. Mitz | System and method for storing and releasing energy |
| CN116979704A (en) * | 2023-07-27 | 2023-10-31 | 中国长江三峡集团有限公司 | Gravity energy storage brick and tower gravity energy storage device with same |
Citations (7)
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| CN102185328A (en) * | 2011-03-28 | 2011-09-14 | 中国华能集团清洁能源技术研究院有限公司 | Novel large-scale power energy storage device |
| CN102797648A (en) * | 2011-05-27 | 2012-11-28 | 曹铁生 | Efficient environment-friendly gravity energy storage method and device |
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| US20200025182A1 (en) * | 2018-07-19 | 2020-01-23 | Energy Vault, Inc. | Energy storage system and method |
| CN111120227A (en) * | 2019-12-19 | 2020-05-08 | 西安隆基清洁能源有限公司 | Energy storage device and photovoltaic system |
| CN111237144A (en) * | 2020-01-14 | 2020-06-05 | 中国华能集团有限公司 | Gravity compressed air energy storage system and working method thereof |
| CN112814858A (en) * | 2021-01-06 | 2021-05-18 | 高拓石油天然气技术（上海）有限责任公司 | Energy storage power generation method based on gravitational potential energy and energy storage power generation tower |
-
2021
- 2021-11-15 CN CN202111331070.1A patent/CN113898545A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102185328A (en) * | 2011-03-28 | 2011-09-14 | 中国华能集团清洁能源技术研究院有限公司 | Novel large-scale power energy storage device |
| CN102797648A (en) * | 2011-05-27 | 2012-11-28 | 曹铁生 | Efficient environment-friendly gravity energy storage method and device |
| CN109072887A (en) * | 2016-02-29 | 2018-12-21 | 先进轨道能量储存有限责任公司 | Crestal line cable drives electrical energy storage system |
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Non-Patent Citations (1)
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| 余智奇: "起重工", 30 November 1980, 四川科学技术出版社, pages: 173 - 174 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11746759B1 (en) * | 2022-04-28 | 2023-09-05 | Howard S. Mitz | System and method for storing and releasing energy |
| CN116979704A (en) * | 2023-07-27 | 2023-10-31 | 中国长江三峡集团有限公司 | Gravity energy storage brick and tower gravity energy storage device with same |
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