Gravity energy storage system

Abstract

The invention relates to the technical field of gravity energy storage, in particular to a gravity energy storage system, all upper sliding rack units are arranged in the vertical direction, all lower sliding rack units are arranged in the vertical direction, all the upper sliding rack units are located above all the lower sliding rack units, and all the lower sliding rack units are located above all the lower sliding rack units. The conveying module is in transmission fit with the energy conversion module, the conveying module is used for conveying the weight blocks in the vertical direction, and the upper connection unit is used for moving in the vertical direction so as to convey the weight blocks between the upper fluency frame units and the conveying module. The lower connection unit is used for moving in the vertical direction so as to convey the heavy blocks between the lower fluency frame units and the conveying module, and then the heavy blocks are conveyed between the upper fluency frame units and the lower fluency frame units. The invention aims to provide a gravity energy storage system aiming at at least one technical problem related in the background technology.

Description

Technical Field

[0001] This application relates to the technical field of gravity energy storage, and more specifically, to a gravity energy storage system. Background Art

[0002] With the continuous development and improvement of China's power grid, China's power generation has been increasing day by day. However, there are differences in power consumption in terms of time and space, with peak and off-peak periods of power consumption. Moreover, most power generation methods are difficult to adjust in power, and combined with clean energy power generation methods that are vulnerable to external factors, it is difficult to solve the contradiction between power generation power and power consumption power. The problem of accommodating excess power generation has become one of the key challenges faced in the construction of a new power system. The application of gravity energy storage technology in new energy power generation is conducive to improving the power system's ability to accommodate renewable resource power generation and plays an important role in the stable operation of the power grid.

[0003] Gravity energy storage is a method of storing energy using gravitational potential energy. Its basic principle is to lift gravity power generation blocks to a high place to store energy. When energy needs to be released, these gravity power generation blocks are allowed to drop, thereby driving a generator to generate electricity. However, the existing gravity energy storage systems have poor continuity, greatly reducing the power generation and energy storage efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a gravity energy storage system for at least one of the technical problems involved in the background art.

[0005] To achieve the above purpose, this application adopts the following technical solutions: This application provides a gravity energy storage system, including a building module, a connection module, a conveying module, an energy conversion module, and a plurality of heavy object blocks. The building module includes a building body, a plurality of upper flow rack units, and a plurality of lower flow rack units. Each of the upper flow rack units is arranged vertically, each of the lower flow rack units is arranged vertically, each of the upper flow rack units is located above each of the lower flow rack units. Each of the upper flow rack units, each of the lower flow rack units, the connection module, the conveying module, and the energy conversion module are all installed on the building body. The conveying module is in transmission cooperation with the energy conversion module, and the conveying module is used to transmit the heavy object blocks in the vertical direction. The connection module includes an upper connection unit and a lower connection unit. The upper connection unit is used to move vertically to transmit the heavy object blocks between each of the upper flow rack units and the conveying module, and the lower connection unit is used to move vertically to transmit the heavy object blocks between each of the lower flow rack units and the conveying module, thereby realizing the transmission of the heavy object blocks between the upper flow rack units and the lower flow rack units.

[0006] Optionally, the conveying module includes a conveying unit, which includes an active transmission wheel, a driven transmission wheel, a flexible transmission member and a plurality of hanging members, the energy conversion module is transmission-connected to the active transmission wheel, the active transmission wheel and the driven transmission wheel are transmission-connected via the flexible transmission member, each of the hanging members is evenly distributed in the extension direction of the flexible transmission member, the weight block includes a weight block body and a hanging part formed on the weight block body, and the hanging member is used for hanging with the hanging part.

[0007] The beneficial effect of this technical solution is that: in this way, the transmission of the heavy object block can be achieved through the hanging between the hanging member and the hanging part, and when the heavy object block needs to be unloaded, the hanging member and the hanging part can be separated.

[0008] Optionally, the upper flow rack unit and the lower flow rack unit are both used to transport the heavy object block in a first direction, and the conveying module includes two conveying units, which are mirror-arranged in a second direction, and the hanging parts are formed on both sides of the heavy object block in the second direction, and the first direction and the second direction are both horizontally arranged, and the first direction is perpendicular to the second direction.

[0009] The beneficial effect of this technical solution is that by setting up two conveying units to hang heavy blocks, not only the safety and reliability of the energy storage system are improved, but also the carrying capacity of the conveying module can be improved, thereby increasing the weight of a single heavy block to improve energy conversion efficiency.

[0010] Optionally, the hanging component includes a chain ratchet, the hanging portion is a ratchet portion, and the chain ratchet is an elastic structure.

[0011] The beneficial effect of this technical solution is that when the weight block is located at a position corresponding to the flexible transmission member, such as when the hanging member moves from bottom to top in the vertical direction, the chain ratchet cooperates with the ratchet part at the weight block to gradually lift the weight block from bottom to top. When the hanging member moves from top to bottom in the vertical direction, since the chain ratchet is an elastic structure, the chain ratchet elastically deforms when in contact with the ratchet part. After the chain ratchet moves over the ratchet part, the chain ratchet restores its shape under the action of elastic force. With the assistance of the upper docking unit, the weight block is lowered and then the ratchet part is hung with the chain ratchet, thereby realizing the vertical transportation of the weight block. It is also possible to make the flexible transmission member rotate in the opposite direction to hang the weight block after the chain ratchet moves over the ratchet part, and then rotate forward again.

[0012] Optionally, the upper connection unit includes an upper connection lifting frame, a first vertical movement component, an upper reset cylinder, and an upper connection plate, all of which are installed on the upper connection lifting frame. The upper connection plate is pivotally connected to the upper connection lifting frame. One end of the upper reset cylinder is pivotally connected to the upper connection plate, and the other end of the upper reset cylinder is pivotally connected to the upper connection lifting frame, so that the upper connection plate can be vertically pivoted under the drive of the upper reset cylinder.

[0013] The beneficial effect of this technical solution is that in this way, when the upper connection unit needs to support the heavy object block, the upper connection plate can be lifted and set horizontally so that the heavy object block can be placed on the upper connection plate. When the heavy object block needs to be moved to the upper fluent rack unit, the upper connection plate can be tilted so that the heavy object block moves from the upper connection plate to the upper fluent rack unit.

[0014] Optionally, the first vertical movement component includes a first roller and a first driving member, both of which are installed on the upper connection lifting frame. A first guide rail extending in the vertical direction is provided on the building body. The first driving member is in transmission connection with the first roller, and the first roller is movably matched with the first guide rail in the vertical direction, so that the upper connection unit can move in the vertical direction along the first guide rail.

[0015] The beneficial effect of this technical solution is that in this way, the vertical movement of the upper connection unit can be realized.

[0016] Optionally, the upper connection unit further includes two connection hook assemblies. Each connection hook assembly includes a connection hook and a connection gear. One end of the connection hook in the length direction is a hook portion, and the connection gear is fixed to the other end of the connection hook. The connection gear and the connection hook are both pivotally connected to the upper connection lifting frame through a rotating shaft. The connection gear is located above the upper connection plate. The two connection gears are meshed with each other. The two connection hook assemblies are symmetrically arranged on both sides of the upper connection plate in a second direction. The two hook portions are both used for hooking with the upper connection plate so that the upper connection plate is in a horizontal state. The two conveying units are used for slidingly cooperating with the two connection hooks respectively so that the two connection hooks are separated from the upper connection plate.

[0017] The beneficial effect of this technical solution is that in this way, after the hanging portion on the heavy object block is hung with the hanging member, as the heavy object block and the hanging member move downward, the two connection hooks are gradually moved in a direction away from the upper connection plate. The upper connection plate can fall under the action of gravity, or the upper connection plate can fall under the action of the upper reset cylinder, so that the heavy object block can move downward smoothly.

[0018] Optionally, an inclined chute is formed on the connecting hook. The inclined chute extends obliquely relative to the vertical direction, and the bottom end of the inclined chute is closer to the upper connecting plate than the top end of the inclined chute. The two hanging members are slidably engaged with the two inclined chutes in a one-to-one correspondence.

[0019] The beneficial effect of this technical solution is that in this way, during the falling process of the hanging member, it interacts with the inclined chute, and then pushes the two connecting hooks to move away from the upper connecting plate.

[0020] Optionally, the lower connecting unit includes a lower connecting lifting frame, and a second vertical moving component, a lower reset cylinder and a lower connecting plate all installed on the lower connecting lifting frame. The lower connecting plate is pivotally connected to the lower connecting lifting frame. One end of the lower reset cylinder is pivotally connected to the lower connecting plate, and the other end of the lower reset cylinder is pivotally connected to the lower connecting lifting frame, so that the lower connecting plate can be vertically pivoted driven by the lower reset cylinder.

[0021] The beneficial effect of this technical solution is that in this way, when the lower connecting unit needs to support the heavy object block, the lower connecting plate can be lifted and set horizontally so that the heavy object block can be placed on the lower connecting plate. When it is necessary to move the heavy object block to the lower flow rack unit, the lower connecting plate can be tilted so that the heavy object block can move from the lower connecting plate to the lower flow rack unit.

[0022] Optionally, the second vertical moving component includes a second roller and a second driving member both installed on the lower connecting lifting frame. A second guide rail extending in the vertical direction is provided on the building body. The second driving member is in transmission connection with the second roller, and the second roller is movably engaged with the second guide rail in the vertical direction, so that the lower connecting unit can move in the vertical direction along the second guide rail.

[0023] The beneficial effect of this technical solution is that in this way, the lower connecting unit can be moved between the lower flow rack units in the vertical direction.

[0024] The technical solution provided by this application can achieve at least one of the following beneficial effects: The gravity energy storage system provided by this application can continuously transfer the heavy object blocks through the cooperation among the upper flow rack units, the connecting module, the conveying module and the lower flow rack units, thereby improving the power generation and energy storage efficiency.

[0025] The additional technical features and their advantages of this application will be more clearly described in the following description content, or can be understood through the specific practice of this application. Description of the Drawings

[0026] To more clearly illustrate the technical solutions of the specific embodiments of the present application, the following will briefly introduce the drawings required for the description of the specific embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Partial front view structural schematic diagram of an embodiment of the gravity energy storage system provided by the embodiment of the present application; Figure 2 Partial right view structural schematic diagram of an embodiment of the gravity energy storage system provided by the embodiment of the present application; Figure 3 For Figure 2 The structural schematic diagram after removing the flexible transmission member in Figure 4 Stereoscopic structural schematic diagram of an embodiment of the hanging member provided by the embodiment of the present application; Figure 5 Stereoscopic structural schematic diagram of an embodiment of the heavy object block provided by the embodiment of the present application; Figure 6 Partial stereoscopic structural schematic diagram of an embodiment of the energy conversion module provided by the embodiment of the present application; Figure 7 Partial structural schematic diagram of an embodiment of the energy conversion module provided by the embodiment of the present application; Figure 8 Partial stereoscopic structural schematic diagram of another embodiment of the energy conversion module provided by the embodiment of the present application; Figure 9 Partial structural schematic diagram of another embodiment of the energy conversion module provided by the embodiment of the present application.

[0028] Reference numerals: 01, upper fluent rack unit; 02, heavy object block; 03, upper connection and lifting rack; 04, connection hook assembly; 05, driving pulley; 06, upper connection plate; 07, heavy object block body; 08, upper reset cylinder; 09, flexible transmission member; 10, hanging member; 11, lower connection plate; 12, lower reset cylinder; 13, driven pulley; 14, second lifting drive member; 15, lower fluent rack unit; 16, lower connection and lifting rack; 17, first lifting drive member; 18, connection gear; 19, connection hook; 20, building body; 21. Inclined chute; 22. Hook part; 23. Chain sprocket teeth; 24. Hanging part; 25. Large driving wheel; 26. Gearbox; 27. Constant speed motor; 28. Controllable clutch; 29. Speed increasing gearbox; 30. Generator; 31. Constant speed mechanism; 32. Small driving wheel; 33. Energy storage motor; 34. Driving cylinder; 35. U-shaped connecting piece. Specific implementation manner

[0029] Next, the technical solution of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] As Figures 1 to 9 shown, the present application provides a gravity energy storage system, including a building module, a connection module, a conveying module, an energy conversion module, and a plurality of heavy objects 02. The building module includes a building body 20, a plurality of upper flow rack units 01 and a plurality of lower flow rack units 15. Each of the upper flow rack units 01 is arranged in the vertical direction, and each of the lower flow rack units 15 is arranged in the vertical direction. Each of the upper flow rack units 01 is located above each of the lower flow rack units 15. Each of the upper flow rack units 01, each of the lower flow rack units 15, the connection module, the conveying module and the energy conversion module are all installed on the building body 20. The conveying module is in transmission cooperation with the energy conversion module. The conveying module is used to convey the heavy object block 02 in the vertical direction. The connection module includes an upper connection unit and a lower connection unit. The upper connection unit is used to move in the vertical direction to convey the heavy object block 02 between each of the upper flow rack units 01 and the conveying module. The lower connection unit is used to move in the vertical direction to convey the heavy object block 02 between each of the lower flow rack units 15 and the conveying module, so as to realize the conveyance of the heavy object block 02 between the upper flow rack unit 01 and the lower flow rack unit 15.

[0033] In the energy storage stage of the gravity energy storage system provided by this application, the lower connection unit conveys the heavy object blocks 02 located in a certain lower flow rack unit 15 to the conveying module one by one. The conveying module conveys each heavy object block 02 to the upper connection unit in sequence. The upper connection unit conveys each heavy object block 02 to the corresponding upper flow rack unit 01 one by one. After the conveyance of all the heavy object blocks 02 on this lower flow rack unit 15 is completed, the lower connection unit moves in the vertical direction to the position of a certain lower flow rack unit 15 that still loads heavy object blocks 02, and then conveys the heavy object blocks 02 in this lower flow rack unit 15 to the conveying module one by one, and then gradually transfers each heavy object block 02 to the upper flow rack unit 01. When the storage space in this upper flow rack unit 01 is full of heavy object blocks 02, the upper connection unit moves in the vertical direction to an upper flow rack unit 01 that is not yet full of heavy object blocks 02, and then conveys each heavy object block 02 to this upper flow rack unit 01 one by one; in the energy release stage, the upper connection unit conveys the heavy object blocks 02 located in a certain upper flow rack unit 01 to the conveying module one by one. The conveying module conveys each heavy object block 02 to the lower connection unit in sequence. The lower connection unit conveys each heavy object block 02 to the corresponding lower flow rack unit 15 one by one. After the conveyance of all the heavy object blocks 02 on this upper connection unit is completed, the upper connection unit moves in the vertical direction to the position of a certain upper flow rack unit 01 that still loads heavy object blocks 02, and then conveys the heavy object blocks 02 in this upper flow rack unit 01 to the conveying module one by one, and then gradually transfers each heavy object block 02 to the lower flow rack unit 15. When the storage space in this lower flow rack unit 15 is full of heavy object blocks 02, the lower connection unit moves in the vertical direction to a lower flow rack unit 15 that is not yet full of heavy object blocks 02, and then conveys each heavy object block 02 to this lower flow rack unit 15 one by one.

[0034] The gravity energy storage system provided by this application can continuously transfer the heavy object block 02 through the cooperation among the upper fluent rack units 01, the connection module, the conveying module and the lower fluent rack units 15, thereby improving the power generation and energy storage efficiency.

[0035] Optionally, the conveying module includes a conveying unit, and the conveying unit includes a driving transmission wheel 05, a driven transmission wheel 13, a flexible transmission member 09 and a plurality of hanging members 10. The energy conversion module is in transmission connection with the driving transmission wheel 05. The driving transmission wheel 05 is in transmission connection with the driven transmission wheel 13 through the flexible transmission member 09. Each of the hanging members 10 is evenly distributed in the extending direction of the flexible transmission member 09. The heavy object block 02 includes a heavy object block body 07 and a hanging portion 24 formed on the heavy object block body 07. The hanging member 10 is used for hanging with the hanging portion 24. In this way, the transmission of the heavy object block 02 can be realized through the hanging between the hanging member 10 and the hanging portion 24. When it is necessary to unload the heavy object block 02, the hanging member 10 and the hanging portion 24 can be separated. The flexible transmission member 09 is a chain structure, a belt, a steel belt or a steel cable, etc.

[0036] Optionally, both the upper flow rack unit 01 and the lower flow rack unit 15 are configured to transport the heavy object block 02 in a first direction. The conveying module includes two conveying units, which are mirror - arranged in a second direction. Hanging portions 24 are formed on both sides of the heavy object block 02 in the second direction. Both the first direction and the second direction are horizontally arranged, and the first direction is perpendicular to the second direction. In this way, by arranging two conveying units to hang the heavy object block 02, not only the safety and reliability of the energy storage system are improved, but also the carrying capacity of the conveying module can be enhanced, thereby increasing the weight of a single heavy object block 02 to improve the energy conversion efficiency. In the embodiment of the present application, preferably, one end of the upper flow rack unit 01 close to the conveying module can be pivotally connected to the building body 20, and the end of the upper flow rack unit 01 far from the conveying module can be pivotally connected to a first lifting driving member 17, which is pivotally connected to the building body 20. The first lifting driving member 17 can drive the end of the upper flow rack unit 01 far from the conveying module to pivot up and down with the end of the upper flow rack unit 01 close to the conveying module as the axis. When the upper flow rack unit 01 conveys the heavy object block 02 to the conveying module, the first lifting driving member 17 can be controlled to lift the upper flow rack unit 01 so that the heavy object block 02 can move towards the conveying module under the action of gravity. When the upper flow rack unit 01 receives the heavy object block 02, the first lifting driving member 17 can be controlled to lower the upper flow rack unit 01 so that the heavy object block 02 on the upper flow rack unit 01 can move in a direction away from the conveying module under the action of gravity. Similarly, one end of the lower flow rack unit 15 close to the conveying module can be pivotally connected to the building body 20, and the end of the lower flow rack unit 15 far from the conveying module can be pivotally connected to a second lifting driving member 14, which is pivotally connected to the building body 20. The second lifting driving member 14 can drive the end of the lower flow rack unit 15 far from the conveying module to pivot up and down with the end of the lower flow rack unit 15 close to the conveying module as the axis. When the lower flow rack unit 15 conveys the heavy object block 02 to the conveying module, the second lifting driving member 14 can be controlled to lift the lower flow rack unit 15 so that the heavy object block 02 can move towards the conveying module under the action of gravity. When the lower flow rack unit 15 receives the heavy object block 02, the second lifting driving member 14 can be controlled to lower the lower flow rack unit 15 so that the heavy object block 02 on the lower flow rack unit 15 can move in a direction away from the conveying module under the action of gravity. Both the first lifting driving member 17 and the second lifting driving member 14 include a cylinder, an oil cylinder or a linear driving member.

[0037] As Figure 4As shown, optionally, the hanging member 10 includes a chain ratchet 23, the hanging portion 24 is a ratchet portion, and the chain ratchet 23 is an elastic structure. When the heavy object block 02 is located at a position corresponding to the flexible transmission member 09, for example, when the hanging member 10 moves upward from bottom to top in the vertical direction, the chain ratchet 23 cooperates with the ratchet portion at the heavy object block 02 to gradually lift the heavy object block 02 from bottom to top. For example, when the hanging member 10 moves downward from top to bottom in the vertical direction, since the chain ratchet 23 is an elastic structure, the chain ratchet 23 elastically deforms under the action of the pressure between the two when contacting the ratchet portion. After the chain ratchet 23 moves past the ratchet portion, the chain ratchet 23 resumes its shape under the action of its own elastic force. With the assistance of the upper connection unit, the heavy object block 02 descends, and then the ratchet portion is hooked to the chain ratchet 23, realizing the transportation of the heavy object block 02 in the vertical direction; it is also possible to reverse the rotation of the flexible transmission member 09 to hook the heavy object block 02 after the chain ratchet 23 moves past the ratchet portion, and then rotate forward again.

[0038] Optionally, the upper connection unit includes an upper connection lifting frame 03, a first vertical movement component, an upper reset cylinder 08, and an upper connection plate 06 that are all installed on the upper connection lifting frame 03. The upper connection plate 06 is pivotally connected to the upper connection lifting frame 03. One end of the upper reset cylinder 08 is pivotally connected to the upper connection plate 06, and the other end of the upper reset cylinder 08 is pivotally connected to the upper connection lifting frame 03, so that the upper connection plate 06 can be vertically pivoted driven by the upper reset cylinder 08. In this way, when the upper connection unit needs to support the heavy object block 02, the upper connection plate 06 can be lifted and set horizontally so that the heavy object block 02 can be placed on the upper connection plate 06. When it is necessary to move the heavy object block 02 to the upper fluent rack unit 01, the upper connection plate 06 can be tilted so that the heavy object block 02 moves from the upper connection plate 06 to the upper fluent rack unit 01. Specifically, in the energy storage stage, the upper connection plate 06 is first in a drooping state to avoid hindering the movement of the heavy object block 02. When the heavy object block 02 moves above the upper connection plate 06 driven by the conveying module, the upper connection plate 06 pivots to a horizontal state or an inclined state to support the heavy object block 02, separating the heavy object block 02 from the conveying module. Continuing to pivot the upper connection plate 06, the heavy object block 02 is moved to the upper fluent rack unit 01. The heavy object block 02 gradually moves away from the conveying module on the upper fluent rack unit 01, causing the upper connection plate 06 to pivot in the opposite direction and remain in a drooping state to avoid the next upward moving heavy object block 02; in the energy release stage, first, the upper connection plate 06 is in a horizontal state. The heavy object block 02 moves along the upper fluent rack unit 01 to the upper connection plate 06. After the conveying module cooperates with the heavy object block 02, the upper connection plate 06 moves from the horizontal state to the drooping state, so that the heavy object block 02 can move downward smoothly with the conveying module past the upper connection plate 06. Before the next heavy object block 02 moves to the position of the upper connection plate 06, the upper connection plate 06 is pivoted again to keep the upper connection plate 06 in a horizontal state.

[0039] Optionally, the first vertical movement component includes a first roller and a first driving member both installed on the upper connection lifting frame 03. A first guide rail (not shown, including the first guide rail, the first roller, and the first driving member) extending in the vertical direction is provided on the building body 20. The first driving member is in transmission connection with the first roller, and the first roller is movably matched with the first guide rail in the vertical direction, so that the upper connection unit can move in the vertical direction along the first guide rail. In this way, the upper connection unit can move vertically between the upper fluent rack units 01. It can be understood that the vertical pivoting refers to the upper connection plate 06 being able to pivot around a horizontally arranged rotating shaft along the axis.

[0040] As Figure 2 and Figure 3 As shown, optionally, the upper connection unit further includes two connection hook assemblies 04. The connection hook assembly 04 includes a connection hook 19 and a connection gear 18. One end of the connection hook 19 in the length direction of the connection hook 19 is a hook portion 22, and the connection gear 18 is fixed to the other end of the connection hook 19. The connection gear 18 and the connection hook 19 are both pivotally connected to the upper connection lifting frame 03 through a rotating shaft. The connection gear 18 is located above the upper connection plate 06. The two connection gears 18 are meshed with each other. The two connection hook assemblies 04 are symmetrically arranged on both sides of the upper connection plate 06 in the second direction. The two hook portions 22 are both used for hooking with the upper connection plate 06 to make the upper connection plate 06 in a horizontal state. The two conveying units are used for slidingly cooperating with the two connection hooks 19 one by one so that the two connection hooks 19 are separated from the upper connection plate 06. In this way, in the energy release stage, when the hanging portion 24 on the heavy object block 02 is hung with the hanging member 10, as the heavy object block 02 and the hanging member 10 move downward, the two connection hooks 19 are gradually moved in a direction away from the upper connection plate 06. After the two connection hooks 19 are separated from the upper connection plate 06, the upper connection plate 06 can fall under the action of gravity, or the upper connection plate 06 falls under the action of the upper reset cylinder 08, so that the heavy object block 02 can move downward smoothly.

[0041] Optionally, an inclined chute 21 is formed on the connection hook 19. The inclined chute 21 extends obliquely relative to the vertical direction, and the bottom end of the inclined chute 21 is closer to the upper connection plate 06 than the top end of the inclined chute 21. The two hanging members 10 are in sliding cooperation with the two inclined chutes 21 one by one. In this way, during the falling process, the hanging member 10 interacts with the inclined chute 21, and then pushes the two connection hooks 19 in a direction away from the upper connection plate 06.

[0042] Optionally, the lower connection unit includes a lower connection lifting frame 16, a second vertical movement component, a lower reset cylinder 12, and a lower connection plate 11, all of which are installed on the lower connection lifting frame 16. The lower connection plate 11 is pivotally connected to the lower connection lifting frame 16. One end of the lower reset cylinder 12 is pivotally connected to the lower connection plate 11, and the other end of the lower reset cylinder 12 is pivotally connected to the lower connection lifting frame 16, so that the lower connection plate 11 can be vertically pivoted under the drive of the lower reset cylinder 12. In this way, when the lower connection unit needs to support the heavy block 02, the lower connection plate 11 can be lifted and set horizontally so that the heavy block 02 can be placed on the lower connection plate 11. When the heavy block 02 needs to be moved to the lower flow rack unit 15, the lower connection plate 11 can be tilted so that the heavy block 02 moves from the lower connection plate 11 to the lower flow rack unit 15. Specifically, during the energy storage stage, the lower connection plate 11 is kept horizontally set, and the heavy block 02 moves from the lower flow rack unit 15 to the lower connection plate 11, and then the heavy block 02 is taken away by the conveying module and sent to the upper flow rack unit 01. During the energy release stage, the lower connection plate 11 is first kept horizontally set, the heavy block 02 moves from top to bottom along with the conveying module to the lower connection plate 11, and then the lower reset cylinder 12 drives the lower connection plate 11 to pivot, tilting the lower connection plate 11, so that the heavy block 02 moves to the lower flow rack unit 15 for storage, and then the lower connection plate 11 rotates in the reverse direction and returns to the horizontal position.

[0043] Optionally, the second vertical movement component includes a second roller and a second driving member, both of which are installed on the lower connection lifting frame 16. A second guide rail (not shown, including the second guide rail, the second roller, and the second driving member) extending in the vertical direction is provided on the building body 20. The second driving member is in transmission connection with the second roller, and the second roller is movably matched with the second guide rail in the vertical direction, so that the lower connection unit can move in the vertical direction along the second guide rail. In this way, the lower connection unit can be moved between the lower flow rack units 15 in the vertical direction. It can be understood that the vertical pivot means that the lower connection plate 11 can pivot around a rotating shaft that is horizontally set along the axis.

[0044] As Figure 6 and Figure 7As shown, optionally, the energy conversion module includes a generator 30, a speed increasing gearbox 29, a controllable clutch 28, a constant speed mechanism 31, a constant speed motor 27, and a transmission unit. The generator 30, the speed increasing gearbox 29, the controllable clutch 28, the constant speed mechanism 31, and the transmission unit are sequentially connected in transmission. The constant speed motor 27 is connected in transmission with the constant speed mechanism 31, and the transmission unit is in transmission cooperation with the driving transmission wheel 05. The constant speed mechanism 31 controls the speed of the driving transmission wheel 05 through the constant speed motor 27 to ensure stable output during power generation. The speed increasing gearbox 29 increases the speed of the driving transmission wheel 05 to the rated range of the generator 30 to improve the power generation efficiency. The transmission unit provided in this application includes a gearbox 26, a small transmission wheel 32, and a large transmission wheel 25. The constant speed mechanism 31, the gearbox 26, the small transmission wheel 32, and the large transmission wheel 25 are sequentially connected in transmission. The large transmission wheel 25 is used to cooperate with the driving transmission wheel 05 to achieve power transmission.

[0045] As Figure 8 and Figure 9 As shown, optionally, the energy conversion module includes two of the controllable clutches 28. The energy conversion module further includes a clutch linkage mechanism and a storage motor 33. The transmission unit includes a gearbox 26. The gearbox 26 is connected in transmission with the constant speed mechanism 31 through one of the controllable clutches 28, and the gearbox 26 is connected in transmission with the storage motor 33 through the other controllable clutch 28. The clutch linkage mechanism is connected to the two controllable clutches 28. Preferably, the clutch linkage mechanism preferably includes a driving cylinder 34 fixed to the building body 20 and a U-shaped connecting member 35 fixed to the driving cylinder 34. Two ends of the U-shaped connecting member 35 are respectively connected to the two controllable clutches 28. The driving cylinder 34 controls the two controllable clutches 28 by driving the U-shaped connecting member 35.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gravity energy storage system, characterized in that, It includes a building module, a connection module, a conveying module, an energy conversion module, and multiple heavy blocks. The building module includes a building body, multiple upper fluent rack units, and multiple lower fluent rack units. Each of the upper fluent rack units is arranged vertically, and each of the lower fluent rack units is arranged vertically. Each of the upper fluent rack units is located above each of the lower fluent rack units. Each of the upper fluent rack units, each of the lower fluent rack units, the connection module, the conveying module, and the energy conversion module are all installed on the building body. The conveying module is in transmission cooperation with the energy conversion module. The conveying module is used to convey the heavy blocks vertically. The connection module includes an upper connection unit and a lower connection unit. The upper connection unit is used to move vertically to convey the heavy blocks between each of the upper fluent rack units and the conveying module. The lower connection unit is used to move vertically to convey the heavy blocks between each of the lower fluent rack units and the conveying module, thereby realizing the conveyance of the heavy blocks between the upper fluent rack units and the lower fluent rack units.

2. The gravity energy storage system according to claim 1, wherein The conveying module includes a conveying unit. The conveying unit includes a driving transmission wheel, a driven transmission wheel, a flexible transmission member, and multiple hanging members. The energy conversion module is in transmission connection with the driving transmission wheel. The driving transmission wheel and the driven transmission wheel are in transmission connection through the flexible transmission member. Each of the hanging members is evenly distributed in the extending direction of the flexible transmission member. The heavy block includes a heavy block body and a hanging portion formed on the heavy block body. The hanging member is used to hang with the hanging portion.

3. The gravity energy storage system according to claim 2, wherein Both the upper fluent rack unit and the lower fluent rack unit are used to convey the heavy blocks in a first direction. The conveying module includes two such conveying units. In a second direction, the two conveying units are arranged in a mirror image. Hanging portions are formed on both sides of the heavy block in the second direction. Both the first direction and the second direction are horizontally arranged, and the first direction is perpendicular to the second direction.

4. The gravity energy storage system according to claim 3, wherein The hanging member includes a chain ratchet tooth, the hanging portion is a ratchet tooth portion, and the chain ratchet tooth is an elastic structure.

5. The gravity energy storage system according to claim 3, wherein The upper connection unit includes an upper connection lifting frame, a first vertical movement assembly, an upper reset cylinder, and an upper connection plate, all of which are installed on the upper connection lifting frame. The upper connection plate is pivotally connected to the upper connection lifting frame. One end of the upper reset cylinder is pivotally connected to the upper connection plate, and the other end of the upper reset cylinder is pivotally connected to the upper connection lifting frame, so that the upper connection plate can be vertically pivoted driven by the upper reset cylinder.

6. The gravity energy storage system according to claim 5, characterized in that, The first vertical movement assembly includes a first roller and a first driving member, both of which are installed on the upper connection lifting frame. A first guide rail extending vertically is provided on the building body. The first driving member is in transmission connection with the first roller. The first roller and the first guide rail are movably matched vertically, so that the upper connection unit can move vertically along the first guide rail.

7. The gravity energy storage system according to claim 5, wherein, The upper connection unit further includes two connection hook assemblies. Each connection hook assembly includes a connection hook and a connection gear. Along the length direction of the connection hook, one end of the connection hook is a hook portion, and the connection gear is fixed to the other end of the connection hook. Both the connection gear and the connection hook are pivotally connected to the upper connection lifting frame through a rotating shaft. The connection gear is located above the upper connection plate. The two connection gears are meshed with each other. The two connection hook assemblies are symmetrically arranged on both sides of the upper connection plate in the second direction. Both hook portions are used to hook the upper connection plate to make the upper connection plate in a horizontal state. The two conveying units are used to slidably cooperate with the two connection hooks respectively to separate both connection hooks from the upper connection plate.

8. The gravity energy storage system according to claim 7, wherein, An inclined chute is formed on the connection hook. The inclined chute extends obliquely relative to the vertical direction, and the bottom end of the inclined chute is closer to the upper connection plate than the top end of the inclined chute. The two hanging members are respectively slidably engaged with the two inclined chutes.

9. The gravity energy storage system according to any one of claims 5 to 8, characterized in that, The lower connection unit includes a lower connection lifting frame, a second vertical movement assembly, a lower reset cylinder, and a lower connection plate, all of which are installed on the lower connection lifting frame. The lower connection plate is pivotally connected to the lower connection lifting frame. One end of the lower reset cylinder is pivotally connected to the lower connection plate, and the other end of the lower reset cylinder is pivotally connected to the lower connection lifting frame, so that the lower connection plate can be vertically pivoted driven by the lower reset cylinder.

10. The gravity energy storage system according to claim 9, wherein, The second vertical movement assembly includes a second roller and a second driving member, both of which are installed on the lower connection lifting frame. A second guide rail extending in the vertical direction is provided on the building body. The second driving member is in transmission connection with the second roller. The second roller and the second guide rail are movably cooperated in the vertical direction, so that the lower connection unit can move in the vertical direction along the second guide rail.

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