Gravity energy storage method and device for manufacturing heavy objects by using waste batteries at sea

Abstract

The invention discloses a gravity energy storage method and device for manufacturing heavy objects by using waste batteries on the sea, and the method comprises the steps: building a movable or fixed ocean platform on the sea, installing a pulley block and a motor unit on the ocean platform, and arranging a transmission cable in linkage with the motor unit on the pulley block in a penetrating manner, a heavy object with a large number of waste batteries inside is fixed to one end of the transmission cable, a balancing weight is fixed to the other end of the transmission cable, in the initial state, the heavy object sinks on the seabed and is located at the low position, during energy storage, the electric drive motor unit lifts the heavy object to the high position and is fixed, electric energy is converted into potential energy to be stored, and during energy release, the heavy object is released. The heavy object sinks under the action of gravity, the transmission cable is pulled to drive the motor unit to generate electricity, potential energy is converted into electric energy, and when the heavy object falls on the seabed again, the balancing weight is still perpendicular to the sea.

Description

Technical Field

[0001] The invention relates to the technical field of offshore gravity energy storage, in particular to a method and a device for offshore gravity energy storage using waste batteries to make heavy objects. Background Art

[0002] The recycling of used batteries has always been an important issue in the field of environmental protection and resource recycling. The current conventional treatment methods are landfill or disassembly of used batteries and then recycling them. The former is a last resort, while the latter is extremely costly with current scientific and technological means.

[0003] The country is now vigorously developing electric energy vehicles, which will undoubtedly lead to a large number of waste batteries in China in the next 5 to 10 years. As for foreign countries, for example, the European Union has introduced new regulations. From September 2024, the scrapped batteries of electric vehicles exported to the European Union must be shipped back to China. The combination of the two means that in the future, there will be a large number of waste batteries that need to be recycled. The method of disassembling the waste batteries and then recycling them is very likely to fail to meet actual needs. Therefore, we urgently need to develop more efficient and lower-cost processing technologies to solve this serious problem, or use the waste batteries themselves as a resource and wait for the processing technology to be developed before processing them.

[0004] my country is currently vigorously developing new energy industries, so the demand for energy storage is also huge, especially offshore gravity energy storage projects. There is enough space and depth in the sea water to meet the needs of gravity energy storage projects, but gravity energy storage requires the production of extremely heavy objects, which requires a large amount of cement, metal and other resources. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a gravity energy storage method and device for making heavy objects at sea using waste batteries.

[0006] The technical solution adopted by the present invention to solve the technical problem is: A gravity energy storage method for making a heavy object by using waste batteries at sea, the method comprising: establishing a mobile or fixed marine platform at sea, installing a pulley block and a motor unit on the marine platform, passing a transmission cable linked to the motor unit through the pulley block, fixing a heavy object with a large number of waste batteries built in at one end of the transmission cable, and fixing a counterweight at the other end; in an initial state, the heavy object sinks to the seabed at a low point; during energy storage, the motor unit is driven by electricity to lift the heavy object to a high point and fix it, converting the electrical energy into potential energy and storing it; during energy release, the heavy object is released, and sinks under the action of gravity, pulling the transmission cable to drive the motor unit to generate electricity, converting the potential energy into electrical energy; when the heavy object falls back on the seabed, the counterweight still hangs in the sea.

[0007] A gravity energy storage device for making heavy objects using waste batteries at sea, comprising a mobile or fixed marine platform established at sea, a pulley block and a motor unit installed on the marine platform, a transmission cable linked to the motor unit passing through the pulley block, a heavy object with a large number of waste batteries built in is fixed at one end of the transmission cable, and a counterweight block is fixed at the other end.

[0008] The waste batteries of the heavy object are squeezed by the device to reduce the gaps between the waste batteries.

[0009] The pulley group includes a first pulley, a second pulley, a third pulley, and a fourth pulley. The third pulley and the fourth pulley have the same installation height, and the second pulley has the lowest installation height. The transmission cable passes through the first pulley, the second pulley, the third pulley, and the fourth pulley in sequence, and the second pulley is connected to the motor unit in terms of transmission.

[0010] The motor unit comprises a generator motor unit and a drive motor unit, wherein the generator motor unit and the drive motor unit are connected to a first gear through a clutch transmission gear box, and the first gear rotates synchronously with the second pulley.

[0011] A weight launching area is provided on the offshore platform corresponding to the weight, a movable load-bearing plate for placing the weight is installed on the weight launching area, a groove similar to the lower end of the weight is provided in the middle of the load-bearing plate, the lower end of the weight is placed on the groove, and an elastic buffer pad is placed between the weight and the groove.

[0012] The weight is connected with a speed regulating float.

[0013] The beneficial effects of the present invention are: Using used batteries as fillers and sealing them with cement and other resources to prevent leakage of substances inside the used batteries can delay the problem of dealing with used batteries into the future, alleviate the current economic and environmental problems caused by used batteries, and wait for the development of processing technology before taking out the used batteries for recycling.

[0014] Before transporting used batteries from abroad to China, they can be compressed or made into heavy objects and transported directly to the gravity energy storage project by sea, which can reduce the space occupied by used batteries and increase the amount of single transportation. At the same time, it can also reduce transit problems and make transportation more convenient.

[0015] There is no need to build high towers or dig deep wells. The characteristics of the ocean's depth can easily solve the space problem of rising and lowering heavy objects, making it suitable for large-scale engineering construction.

[0016] The present invention is built on an offshore platform, which has little impact on the inland environment, will not occupy farmland or land, and will not affect the surrounding transportation and production and living environment. The vast sea area provides sufficient space and there is no need to worry about occupancy issues. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of a clutch transmission gearbox; Figure 3 It is a structural diagram of the load-bearing plate; Figure 4 It is a cross-sectional view of a heavy object. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0020] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0021] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0022] Reference Figure 1-4A gravity energy storage method for making heavy objects by using waste batteries at sea, the method comprising: establishing a mobile or fixed marine platform at sea, installing a pulley block and a motor unit on the marine platform, and passing a transmission cable linked to the motor unit through the pulley block, a heavy object with a large number of waste batteries built in is fixed at one end of the transmission cable, and a counterweight is fixed at the other end. In the initial state, the heavy object sinks on the seabed and is located at a low point. When storing energy, the electric motor unit is driven by electricity to lift the heavy object to a high point and fix it, and the electrical energy is converted into potential energy and stored. When releasing energy, the heavy object is released, and the heavy object sinks under the action of gravity, pulling the transmission cable to drive the motor unit to generate electricity, and converting the potential energy into electrical energy. When the heavy object falls on the seabed again, the counterweight is still hanging in the sea.

[0023] A gravity energy storage device for making a heavy object by using waste batteries at sea, comprising a mobile or fixed marine platform 1 established at sea, a pulley block and a motor unit installed on the marine platform 1, a transmission cable 2 linked to the motor unit is passed through the pulley block, and a heavy object 4 (such as a heavy object 4) with a large number of waste batteries built in is fixed at one end of the transmission cable 2. Figure 4 As shown in A in the figure, which is a schematic diagram of waste batteries as fillers), a counterweight 5 is fixed at the other end. The function of the counterweight 5 is that when the weight 4 rises, the counterweight 5 drags the transmission cable 2 into the sea, reducing the amplitude of the transmission cable 2 swinging with the waves, avoiding the transmission cable 2 being entangled on one side of the weight 4, affecting the operation of the entire system, and when the weight 4 sinks to the bottom of the sea, the counterweight 5 is still in the sea, that is, the counterweight 5 will never get close to the offshore platform 1, avoiding collision with the offshore platform 1, causing the offshore platform 1 to be damaged.

[0024] The marine platform 1 can be a fixed platform on the seawater, such as a booster tank of offshore wind power, an oil drilling platform, etc., or a floating body on the sea, such as a large ship. It has little impact on the inland environment, will not occupy farmland or land, and will not affect the surrounding transportation and production and living environment. The vast sea area provides sufficient space and there is no need to worry about occupation issues. There is no need to build high towers or dig deep wells like energy storage projects such as solid gravity potential energy storage. Only the characteristics of the ocean depth can be used to easily solve the space problem of rising and falling heavy objects, which is more suitable for large-scale engineering construction.

[0025] The used batteries of the weight 4 are squeezed by the equipment to reduce the gaps between the used batteries. The use of the weight has a specified period of time, such as 3 years or 5 years. After reaching the practical life, the weight needs to be replaced to avoid the sealing performance of the sealed shell made of cement being reduced due to seawater corrosion, and the used battery materials inside leaking out and polluting the ocean. For the replaced weight, a special storage place can be found for storage (since it is still wrapped in a cement shell, no special treatment is required) as an alternative reserve resource, waiting for the development of waste battery treatment technology, and then processing it, or it can be filled up and processed. Similarly, since it is wrapped in a cement shell, the impact on land resources can also be reduced.

[0026] For areas in China that are far away from the ocean, the waste batteries produced can also be made into heavy objects and applied to gravity energy storage projects on land based on the principle of proximity.

[0027] The pulley group includes a first pulley 6, a second pulley 7, a third pulley 8, and a fourth pulley 9. The third pulley 8 and the fourth pulley 9 have the same installation height, and the second pulley 7 has the lowest installation height. The transmission cable 2 passes through the first pulley 6, the second pulley 7, the third pulley 8, and the fourth pulley 9 in sequence, and the second pulley 7 is connected to the motor unit in terms of transmission.

[0028] In this embodiment, the installation heights of the first pulley 6, the third pulley 8 and the fourth pulley 9 are consistent, the installation height of the second pulley 7 is lower than these three pulleys, and the two sides of the second pulley 7 are parallel to the tangent lines of the first pulley 6 and the third pulley 8. When the transmission cable 2 passes through each pulley, the central angle of the second pulley 7 covered by the transmission cable 2 reaches 180°, and the torque transmission to the shaft is more balanced. By utilizing the arrangement here, the stability and safety of the system operation can be improved.

[0029] In addition, the present invention may also adopt different pulley block designs, as long as the same effect can be achieved.

[0030] The motor unit comprises a generator motor unit 10 and a drive motor unit 11 , wherein the generator motor unit 10 and the drive motor unit 11 are connected to a first gear 12 via a clutch transmission gearbox, and the first gear 12 rotates synchronously with the second pulley 7 .

[0031] refer to Figure 2The clutch transmission gearbox includes a clutch gear 17, a speed-increasing gear set 18, and a speed-reducing gear set 19. The clutch gear 17 is always meshed with the first gear 12. The output shaft of the generator motor unit 10 is connected to a second gear 21 through a coupling 20. The second gear 21 is meshed with the speed-increasing gear set 18. The output shaft of the drive motor unit 11 is fixed with a third gear 22. The third gear 22 is meshed with the speed-reducing gear set 19. When the clutch gear 17 is turned to mesh with the speed-reducing gear set 19, the drive motor unit 11 A transmission connection is formed with the present device. At this time, the driving motor unit 11 is driven to start, so that the weight 4 can be lifted up, and due to the action of the reduction gear set 19, the rotation speed of the first gear 12 is reduced and its torque is increased, thereby providing sufficient protection for lifting the weight 4; when the clutch gear 17 is turned to engage with the speed-increasing gear set 18, that is, the generator motor unit 10 forms a transmission connection with the present device, the weight 4 is released at this time, and the weight 4 sinks, driving the generator motor unit 10 to rotate, thereby realizing the function of power generation. Due to the resistance of the seawater itself, the sinking speed of the weight 4 is relatively slow. The speed-increasing gear set 18 is used to increase the rotation speed of the generator motor unit 10 to meet the speed requirement for power generation. In actual applications, gear sets with different tooth ratios can be configured according to the actual required power generation and power generation efficiency.

[0032] In this system, a flywheel energy storage system can be connected in series. When the sinking speed of the weight 4 fluctuates, the flywheel energy storage system can absorb or release energy to maintain a relatively stable speed of the entire system, thereby ensuring that the weight 4 moves at a uniform speed, further improving the stability of power generation.

[0033] A weight launching area 13 is provided on the marine platform 1 corresponding to the weight 4, and a movable load-bearing plate 14 for placing the weight 4 is installed on the weight launching area 13. A groove 15 similar to the lower end of the weight 4 is provided in the middle of the load-bearing plate 14, and the lower end of the weight 4 is placed on the groove 15, and an elastic buffer pad 16 is placed between the weight 4 and the groove 15 to ensure that the weight 4 does not slide, thereby further improving the stability and safety of the system operation.

[0034] The heavy object launching area 13 can be rectangular, and the load-bearing plate 14 can be translated along the length direction on the heavy object launching area 13. When the heavy object 4 needs to be placed, the load-bearing plate 14 can be moved to the bottom of the heavy object 4. When the heavy object 4 needs to be launched into the water, the load-bearing plate 14 can be removed from the heavy object launching area 13. The load-bearing plate 14 can also be composed of two suspension bridges. When the heavy object 4 needs to be placed, the two suspension bridges are lowered, and the heavy object 4 is placed on the suspension bridges. The structure is simple and suitable for the construction of large-scale projects. In addition, conventional methods such as a crane can be used to move the heavy object 4 from the top of the heavy object launching area 13 to other positions of the offshore platform for placement.

[0035] The weight 4 is connected to a speed-regulating float 3, and the function of the speed-regulating float 3 is that when the sinking speed of the weight 4 reaches the requirement, the speed-regulating float 3 is pulled into the water again (that is, the speed-regulating float 3 and the weight 4 are connected by a cable), providing an upward force for the weight 4, so that the overall force of the weight 4 is balanced, so that it maintains a uniform sinking state, which is suitable for power generation (the specific principle is consistent with the application number 2024116786728 filed by the same applicant on November 22, 2024, a method and device for buoyancy-assisted gravity energy storage for use at sea).

[0036] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0038] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gravity energy storage method for making heavy objects using waste batteries at sea, characterized in that The method is: building a mobile or fixed marine platform at sea, installing a pulley block and a motor unit on the marine platform, and passing a transmission cable linked to the motor unit through the pulley block, a heavy object with a large number of waste batteries built in is fixed at one end of the transmission cable, and a counterweight is fixed at the other end. In the initial state, the heavy object sinks on the seabed and is located at a low point. When storing energy, the electric motor unit is driven by electricity to lift the heavy object to a high point and fix it, and the electrical energy is converted into potential energy and stored. When releasing energy, the heavy object is released, and the heavy object sinks under the action of gravity, pulling the transmission cable to drive the motor unit to generate electricity, and converting the potential energy into electrical energy. When the heavy object falls on the seabed again, the counterweight is still hanging in the sea.

2. A gravity energy storage device for making heavy objects using waste batteries at sea, characterized in that: The invention comprises establishing a mobile or fixed marine platform (1) at sea, wherein a pulley block and a motor unit are installed on the marine platform (1), and a transmission cable (2) linked to the motor unit is passed through the pulley block, wherein a weight (4) containing a large number of waste batteries is fixed at one end of the transmission cable (2), and a counterweight block (5) is fixed at the other end.

3. The gravity energy storage device for making heavy objects using waste batteries at sea according to claim 2 is characterized in that The waste batteries of the weight (4) are squeezed by the device to reduce the gaps between the waste batteries.

4. The gravity energy storage device for making heavy objects using waste batteries at sea according to claim 2 is characterized in that The pulley block comprises a first pulley (6), a second pulley (7), a third pulley (8), and a fourth pulley (9); the third pulley (8) and the fourth pulley (9) are installed at the same height, and the second pulley (7) has the lowest installation height; the transmission cable (2) passes through the first pulley (6), the second pulley (7), the third pulley (8), and the fourth pulley (9) in sequence; and the second pulley (7) is transmission-connected to the motor unit.

5. The gravity energy storage device for making heavy objects using waste batteries at sea according to claim 4 is characterized in that The motor unit comprises a generator motor unit (10) and a drive motor unit (11); the generator motor unit (10) and the drive motor unit (11) are connected to a first gear (12) via a clutch transmission gearbox; the first gear (12) rotates synchronously with the second pulley (7).

6. The gravity energy storage device for making heavy objects using waste batteries at sea according to claim 2 is characterized in that The offshore platform (1) is provided with a weight launching area (13) corresponding to the weight (4), and a movable bearing plate (14) for placing the weight (4) is installed on the weight launching area (13). A groove (15) similar to the lower end of the weight (4) is provided in the middle of the bearing plate (14), and the lower end of the weight (4) is placed on the groove (15), and an elastic buffer pad (16) is placed between the weight (4) and the groove (15).

7. The gravity energy storage device for making heavy objects using waste batteries at sea according to claim 2 is characterized in that The weight (4) is connected to a speed regulating float (3).

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