Gravity energy storage system

Abstract

The present application relates to the field of gravity energy storage technology, specifically, to a gravity energy storage system, wherein each of the upper flow rack units is arranged in the vertical direction, and each of the lower flow rack units is arranged in the vertical direction, and each of the upper flow rack units is located above each of the lower flow rack units, and the conveying module is in transmission cooperation with the energy conversion module, and the conveying module is used to transmit the weight blocks in the vertical direction, and the upper connecting unit is used to move in the vertical direction to transmit the weight blocks between each of the upper flow rack units and the conveying module, and the lower connecting unit is used to move in the vertical direction to transmit the weight blocks between each of the lower flow rack units and the conveying module, thereby realizing the transmission of the weight blocks between the upper flow rack units and the lower flow rack units. The purpose of this application is to provide a gravity energy storage system in response to at least one technical problem involved in the background technology.

Description

Technical Field

[0001] The present application relates to the field of gravity energy storage technology, and in particular to a gravity energy storage system. Background Art

[0002] With the continuous development and improvement of my country's power grid, the country's power generation capacity is increasing day by day. However, power consumption varies over time and space, with peak and trough periods. Furthermore, most power generation methods are difficult to regulate. Coupled with the vulnerability of clean energy generation methods to external factors, the mismatch between generated power and consumed power is difficult to resolve. The problem of absorbing excess power has become one of the key challenges facing the construction of new power systems. The application of gravity energy storage technology to renewable energy power generation will help improve the power system's ability to absorb renewable energy generation and play 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. The basic principle is to raise gravity power generation blocks to a height to store energy. When the energy is needed, these blocks are lowered to drive a generator to generate electricity. However, existing gravity energy storage systems suffer from poor continuity, significantly reducing the efficiency of power generation and storage. Summary of the Invention

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

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides a gravity energy storage system, comprising a building module, a connection module, a transport module, an energy conversion module and a plurality of weight blocks.

[0007] 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 in a vertical direction, each of the lower flow rack units is arranged in a vertical direction, 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 connecting 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 blocks in the vertical direction.

[0008] The docking module includes an upper docking unit and a lower docking unit. The upper docking unit is used to move in the vertical direction to transfer the heavy blocks between each upper flow rack unit and the conveying module. The lower docking unit is used to move in the vertical direction to transfer the heavy blocks between each lower flow rack unit and the conveying module, thereby realizing the transfer of the heavy blocks between the upper flow rack unit and the lower flow rack unit.

[0009] 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 connected to the active transmission wheel, and the active transmission wheel and the driven transmission wheel are connected to each other through the flexible transmission member. The hanging members are 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 to be hung with the hanging part.

[0010] The beneficial effect of this technical solution is that: in this way, the heavy object block can be transferred by 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.

[0011] Optionally, the upper flow rack unit and the lower flow rack unit are both used to transport the heavy object block in the first direction, and the conveying module includes two conveying units, which are mirror-imaged in the second direction, and the hanging parts are formed on both sides of the heavy object block in the second direction. The first direction and the second direction are both horizontally arranged, and the first direction is perpendicular to the second direction.

[0012] 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.

[0013] Optionally, the hanging component includes a chain ratchet, the hanging portion is a ratchet portion, and the chain ratchet is an elastic structure.

[0014] The beneficial effect of this technical solution is that: when the heavy 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 heavy block to gradually lift the heavy 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 it contacts the ratchet part. After the chain ratchet moves past the ratchet part, the chain ratchet restores its shape under the action of elastic force. With the assistance of the upper connecting unit, the heavy block is lowered and then the ratchet part is hung with the chain ratchet, thereby realizing the vertical transportation of the heavy block. It is also possible to make the flexible transmission member rotate in the opposite direction to hang the heavy block after the chain ratchet moves past the ratchet part, and then rotate forward again.

[0015] Optionally, the upper docking unit includes an upper docking lifting frame, and a first vertical moving component, an upper reset cylinder and an upper docking plate all installed on the upper docking lifting frame, the upper docking plate is pivotally connected to the upper docking lifting frame, one end of the upper reset cylinder is pivotally connected to the upper docking plate, and the other end of the upper reset cylinder is pivotally connected to the upper docking lifting frame, so that the upper docking plate can be vertically pivoted under the drive of the upper reset cylinder.

[0016] The beneficial effect of this technical solution is that, when the upper connecting unit needs to support a heavy block, the upper connecting plate can be lifted and set horizontally so that the heavy block can be placed on the upper connecting plate; when the heavy block needs to be moved to the upper flow rack unit, the upper connecting plate can be tilted so that the heavy block can be moved from the upper connecting plate to the upper flow rack unit.

[0017] Optionally, the first vertical movement component includes a first roller and a first driving member both mounted on the upper docking lifting frame, a first guide rail extending in the vertical direction is provided on the building body, the first driving member is transmission-connected to the first roller, and the first roller is movably matched with the first guide rail in the vertical direction so that the upper docking unit can move in the vertical direction along the first guide rail.

[0018] The beneficial effect of this technical solution is that: in this way, the upper docking unit can be moved in the vertical direction.

[0019] Optionally, the upper docking unit also includes two docking hook assemblies, the docking hook assemblies including a docking hook and a docking gear, one end of the docking hook in the length direction of the docking hook is a hook portion, and the docking gear is fixed to the other end of the docking hook, the docking gear and the docking hook are both pivotally connected to the upper docking lifting frame through a rotating shaft, the docking gear is located above the upper docking plate, the two docking gears are meshed, and the two docking hook assemblies are symmetrically arranged on both sides of the upper docking plate in the second direction, and the two hook portions are used to hook with the upper docking plate so that the upper docking plate is in a horizontal state, and the two conveying units are used to slide with the two docking hooks in a one-to-one corresponding manner so that the two docking hooks are separated from the upper docking plate.

[0020] The beneficial effect of this technical solution is that: in this way, when the hanging part on the weight block is hung with the hanging piece, as the weight block and the hanging piece move downward, the two connecting hooks are gradually moved away from the upper connecting plate, and the upper connecting plate can fall under the action of gravity, or the upper connecting plate falls under the action of the upper reset cylinder, so that the weight block can move downward smoothly.

[0021] Optionally, an inclined slide groove is formed on the connecting hook, and the inclined slide groove extends obliquely relative to the vertical direction, and the bottom end of the inclined slide groove is closer to the upper connecting plate than the top end of the inclined slide groove, and the two hanging parts slide in cooperation with the two inclined slide grooves in a one-to-one correspondence.

[0022] The beneficial effect of this technical solution is that: in this way, the hanging member interacts with the inclined slide groove during the falling process, thereby pushing the two connecting hooks to move in a direction away from the upper connecting plate.

[0023] Optionally, the lower docking unit includes a lower docking lifting frame, and a second vertical moving component, a lower reset cylinder and a lower docking plate all installed on the lower docking lifting frame, the lower docking plate is pivotally connected to the lower docking lifting frame, one end of the lower reset cylinder is pivotally connected to the lower docking plate, and the other end of the lower reset cylinder is pivotally connected to the lower docking lifting frame, so that the lower docking plate can be vertically pivoted under the drive of the lower reset cylinder.

[0024] The beneficial effect of this technical solution is that: when the lower connecting unit needs to support a heavy block, the lower connecting plate can be lifted and set horizontally so that the heavy block can be placed on the lower connecting plate; when the heavy block needs to be moved to the lower flow rack unit, the lower connecting plate can be tilted so that the heavy block can be moved from the lower connecting plate to the lower flow rack unit.

[0025] Optionally, the second vertical movement component includes a second roller and a second drive member both mounted on the lower docking lifting frame, a second guide rail extending in the vertical direction is provided on the building body, the second drive member is transmission-connected to the second roller, and the second roller is movably matched with the second guide rail in the vertical direction so that the lower docking unit can move in the vertical direction along the second guide rail.

[0026] 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.

[0027] The technical solution provided by this application can achieve at least one of the following beneficial effects:

[0028] The gravity energy storage system provided in the present application can continuously transfer heavy blocks through the cooperation between each upper flow rack unit, the connecting module, the conveying module and each lower flow rack unit, thereby improving the power generation and energy storage efficiency.

[0029] The additional technical features and advantages of this application will be more clearly explained in the following description, or can be understood through the specific practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the technical solutions of the specific embodiments of this application, the following briefly introduces the drawings required for describing the specific embodiments. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0031] Figure 1 A partial front view structural diagram of an implementation scheme of a gravity energy storage system provided in an embodiment of the present application;

[0032] Figure 2 A partial right side structural schematic diagram of an implementation scheme of a gravity energy storage system provided in an embodiment of the present application;

[0033] Figure 3 for Figure 2 Schematic diagram of the structure after removing the flexible transmission parts;

[0034] Figure 4 A schematic diagram of the three-dimensional structure of an embodiment of a hanging member provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the three-dimensional structure of an embodiment of a weight block provided in an embodiment of the present application;

[0036] Figure 6A schematic diagram of a partial three-dimensional structure of an embodiment of an energy conversion module provided in an embodiment of the present application;

[0037] Figure 7 A partial structural diagram of an embodiment of the energy conversion module provided in the present application;

[0038] Figure 8 A schematic diagram of a partial three-dimensional structure of another embodiment of the energy conversion module provided in an embodiment of the present application;

[0039] Figure 9 A partial structural diagram of another embodiment of the energy conversion module provided in the examples of the present application.

[0040] Reference numerals:

[0041] 01. Upper flow rack unit; 02. Heavy object block;

[0042] 03. Upper docking lift; 04. Docking hook assembly;

[0043] 05. Active transmission wheel; 06. Upper connecting plate;

[0044] 07. Weight block body; 08. Upper reset cylinder;

[0045] 09. Flexible transmission parts; 10. Hanging parts;

[0046] 11. Lower connecting plate; 12. Lower reset cylinder;

[0047] 13. Driven transmission wheel; 14. Second lifting drive member;

[0048] 15. Lower flow rack unit; 16. Lower connecting lifting rack;

[0049] 17. First lifting drive member; 18. Connecting gear;

[0050] 19. Connecting hook; 20. Building body;

[0051] 21. inclined chute; 22. hook;

[0052] 23. Chain ratchet; 24. Hanging part;

[0053] 25. Large transmission wheel; 26. Gear box;

[0054] 27. Constant speed motor; 28. Controllable clutch;

[0055] 29. Speed ​​increasing gearbox; 30. Generator;

[0056] 31. Constant speed mechanism; 32. Small transmission wheel;

[0057] 33. Energy storage motor; 34. Driving cylinder;

[0058] 35. U-shaped connector. DETAILED DESCRIPTION

[0059] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0060] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "second," "secondary," and "thirdary" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0062] like Figures 1 to 9 As shown, the present application provides a gravity energy storage system, including a building module, a connection module, a transport module, an energy conversion module and a plurality of weight blocks 02.

[0063] 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 a vertical direction, each of the lower flow rack units 15 is arranged in a 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 connecting module, the conveying module and the energy conversion module are all installed in the building body 20, the conveying module is in transmission cooperation with the energy conversion module, and the conveying module is used to transmit the heavy object block 02 in the vertical direction,

[0064] The docking module includes an upper docking unit and a lower docking unit. The upper docking unit is used to move in the vertical direction to transfer the heavy object block 02 between each upper flow rack unit 01 and the conveying module. The lower docking unit is used to move in the vertical direction to transfer the heavy object block 02 between each lower flow rack unit 15 and the conveying module, thereby realizing the transfer of the heavy object block 02 between the upper flow rack unit 01 and the lower flow rack unit 15.

[0065] In the gravity energy storage system provided by the present application, during the energy storage stage, the lower docking unit transfers the weight blocks 02 located in a certain lower flow rack unit 15 to the conveying module one by one, the conveying module conveys each weight block 02 to the upper docking unit in sequence, and the upper docking unit transfers each weight block 02 to the corresponding upper flow rack unit 01 one by one. After completing the transportation of each weight block 02 on the lower flow rack unit 15, the lower docking unit moves in the vertical direction to the position of a certain lower flow rack unit 15 still loaded with weight blocks 02, and then transfers the weight blocks 02 in the lower flow rack unit 15 to the conveying module one by one, and then gradually transfers each weight block 02 to the upper flow rack unit 01. When the storage space in the upper flow rack unit 01 is full of weight blocks 02, the upper docking unit moves in the vertical direction to the upper flow rack unit 01 that is not yet full of weight blocks 02, and then transfers each weight block 02 to the upper flow rack unit 01 one by one. Upper flow rack unit 01; in the energy release stage, the upper docking unit transfers the weight blocks 02 located in a certain upper flow rack unit 01 to the conveying module one by one, the conveying module conveys each weight block 02 to the lower docking unit in turn, and the lower docking unit transfers each weight block 02 one by one to the corresponding lower flow rack unit 15. After completing the transportation of each weight block 02 on the upper docking unit, the upper docking unit moves in the vertical direction to a position of an upper flow rack unit 01 that is still loaded with weight blocks 02, and then transfers the weight blocks 02 in the upper flow rack unit 01 one by one to the conveying module, and then gradually transfers each weight block 02 to the lower flow rack unit 15. When the storage space in the lower flow rack unit 15 is full of weight blocks 02, the lower docking unit moves in the vertical direction to the lower flow rack unit 15 that is not yet full of weight blocks 02, and then transfers each weight block 02 to the lower flow rack unit 15 one by one.

[0066] The gravity energy storage system provided in the present application can continuously transfer the heavy objects 02 through the cooperation between the upper flow rack units 01, the connecting modules, the conveying modules and the lower flow rack units 15, thereby improving the power generation and energy storage efficiency.

[0067] Optionally, the conveying module includes a conveying unit, which includes an active transmission wheel 05, a passive transmission wheel 13, a flexible transmission member 09, and a plurality of hanging members 10. The energy conversion module is connected to the active transmission wheel 05, and the active transmission wheel 05 is connected to the passive transmission wheel 13 via the flexible transmission member 09. The hanging members 10 are evenly distributed in the extension direction of the flexible transmission member 09. The weight block 02 includes a weight block body 07 and a hanging portion 24 formed on the weight block body 07. The hanging member 10 is used to hang on the hanging portion 24. In this way, the weight block 02 can be transmitted by hanging between the hanging member 10 and the hanging portion 24. When the weight block 02 needs to be unloaded, the hanging member 10 can be separated from the hanging portion 24. The flexible transmission member 09 is a chain structure, a belt, a steel belt, or a steel cable.

[0068] Optionally, the upper flow rack unit 01 and the lower flow rack unit 15 are both used to transport the heavy object block 02 in a first direction. The conveying module includes two conveying units, which are arranged in a mirror image in a second direction. The hanging portion 24 is formed on both sides of the heavy object block 02 in the second direction. The first direction and the second direction are both arranged horizontally, and the first direction is perpendicular to the second direction. In this way, by providing two conveying units to hang heavy objects 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 increased, thereby increasing the weight of a single heavy object block 02 to improve energy conversion efficiency. In the embodiment of the present application, preferably, the 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 away from the conveying module can be pivotally connected to a first lifting drive member 17. The first lifting drive member 17 is pivotally connected to the building body 20. The first lifting drive member 17 can drive the end of the upper flow rack unit 01 away 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 drive member 17 can be controlled to lift the upper flow rack unit 01 so that the heavy object block 02 can move toward the conveying module under the action of gravity. When the upper flow rack unit 01 receives the heavy object block 02, the first lifting drive member 17 can be controlled to make the upper flow rack unit 01 fall, so that the heavy object block 02 on the upper flow rack unit 01 can be moved away from the conveying module under the action of gravity. Similarly, the end of the lower flow rack unit 15 close to the conveying module can be pivoted to the building body 20, and the end of the lower flow rack unit 15 away from the conveying module can be pivoted to a second lifting drive member 14. The second lifting drive member 14 is pivoted to the building body 20. The second lifting drive member 14 can drive the end of the lower flow rack unit 15 away 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 02 to the conveying module, the second lifting drive member 14 can be controlled to lift the lower flow rack unit 15 so that the heavy object 02 can move toward the conveying module under the action of gravity. When the lower flow rack unit 15 receives the heavy object 02, the second lifting drive member 14 can be controlled to drop the lower flow rack unit 15 so that the heavy object 02 on the lower flow rack unit 15 can move in the direction away from the conveying module under the action of gravity. The first lifting drive member 17 and the second lifting drive member 14 both include a cylinder, an oil cylinder or a linear drive member.

[0069] like Figure 4As shown, optionally, the hanging component 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 weight block 02 is located at the position corresponding to the flexible transmission member 09, such as the hanging member 10 moves from bottom to top in the vertical direction, the chain ratchet 23 cooperates with the ratchet part at the weight block 02 to gradually lift the weight block 02 from bottom to top. If the hanging member 10 moves 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 it contacts the ratchet part. After the chain ratchet 23 moves to pass the ratchet part, the chain ratchet 23 restores its shape under the action of its own elastic force, and with the assistance of the upper connecting unit, the weight block 02 is lowered and the ratchet part is hung with the chain ratchet 23, thereby realizing the vertical transportation of the weight block 02; it is also possible to make the flexible transmission member 09 rotate in the opposite direction to hang the weight block 02 after the chain ratchet 23 moves to pass the ratchet part, and then rotate forward again.

[0070] Optionally, the upper docking unit includes an upper docking lifting frame 03, and a first vertical movement assembly, an upper return cylinder 08, and an upper docking plate 06, all of which are mounted on the upper docking lifting frame 03. The upper docking plate 06 is pivotally connected to the upper docking lifting frame 03, one end of the upper return cylinder 08 is pivotally connected to the upper docking plate 06, and the other end of the upper return cylinder 08 is pivotally connected to the upper docking lifting frame 03, so that the upper docking plate 06 can be vertically pivoted under the drive of the upper return cylinder 08. In this way, when the upper docking unit needs to support the weight block 02, the upper docking plate 06 can be lifted and arranged horizontally so that the weight block 02 can be placed on the upper docking plate 06. When the weight block 02 needs to be moved to the upper flow rack unit 01, the upper docking plate 06 can be tilted to move the weight block 02 from the upper docking plate 06 to the upper flow rack unit 01. Specifically, in the energy storage stage, the upper connecting plate 06 is first in a drooping state to prevent the upper connecting plate 06 from hindering the movement of the weight block 02. When the weight block 02 moves to the top of the upper connecting plate 06 under the drive of the conveying module, the upper connecting plate 06 pivots to a horizontal state or an inclined state to support the weight block 02, so that the weight block 02 is separated from the conveying module, and the upper connecting plate 06 is continuously pivoted to move the weight block 02 to the upper flow rack unit 01. The weight block 02 gradually moves away from the conveying module on the upper flow rack unit 01, so that the upper connecting plate 06 Pivot in the opposite direction and maintain a drooping state to avoid the next heavy block 02 moving upward; in the energy release stage, first make the upper connecting plate 06 in a horizontal state, and the heavy block 02 moves along the upper flow rack unit 01 to the upper connecting plate 06. After the conveying module cooperates with the heavy block 02, the upper connecting plate 06 moves from a horizontal state to a drooping state, so that the heavy block 02 can smoothly cross the upper connecting plate 06 and move downward with the conveying module. Before the next heavy block 02 moves to the position of the upper connecting plate 06, pivot the upper connecting plate 06 again to keep it in a horizontal state.

[0071] Optionally, the first vertical movement assembly includes a first roller and a first drive member, both mounted on the upper docking lift frame 03. A first guide rail extending vertically is provided on the building body 20 (the first guide rail, first roller, and first drive member are not shown). The first drive member is in driving connection with the first roller, and the first roller and the first guide rail are vertically movable, enabling the upper docking unit to move vertically along the first guide rail. This allows the upper docking unit to move vertically between the upper flow rack units 01. It is understood that vertical pivoting refers to the ability of the upper docking plate 06 to pivot about an axially horizontally disposed rotation axis.

[0072] like Figure 2 and Figure 3 As shown, optionally, the upper docking unit also includes two docking hook assemblies 04, the docking hook assembly 04 includes a docking hook 19 and a docking gear 18, one end of the docking hook 19 in the length direction of the docking hook 19 is a hook portion 22, the docking gear 18 is fixed to the other end of the docking hook 19, the docking gear 18 and the docking hook 19 are both pivotally connected to the upper docking lifting frame 03 through a rotating shaft, the docking gear 18 is located above the upper docking plate 06, the two docking gears 18 are engaged, and the two docking hook assemblies 04 are symmetrically arranged on both sides of the upper docking plate 06 in the second direction, and the two hook portions 22 are both used to hook with the upper docking plate 06 so that the upper docking plate 06 is in a horizontal state, and the two conveying units are used to slide with the two docking hooks 19 in a one-to-one corresponding manner so that the two docking hooks 19 are separated from the upper docking plate 06. In this way, in the energy release stage, after the hanging portion 24 on the weight block 02 is hung with the hanging piece 10, as the weight block 02 and the hanging piece 10 move downward, the two connecting hooks 19 are gradually moved in the direction away from the upper connecting plate 06. After the two connecting hooks 19 are separated from the upper connecting plate 06, the upper connecting plate 06 can fall under the action of gravity, or the upper connecting plate 06 can fall under the action of the upper reset cylinder 08, so that the weight block 02 can move downward smoothly.

[0073] Optionally, an inclined slot 21 is formed on the docking hook 19. The inclined slot 21 extends obliquely relative to the vertical direction, and the bottom end of the inclined slot 21 is closer to the upper docking plate 06 than the top end of the inclined slot 21. The two hanging members 10 slide in a one-to-one correspondence with the two inclined slots 21. In this way, the hanging members 10 interact with the inclined slots 21 during the falling process, thereby pushing the two docking hooks 19 to move away from the upper docking plate 06.

[0074] Optionally, the lower docking unit includes a lower docking lifting frame 16, and a second vertical moving assembly, a lower return cylinder 12, and a lower docking plate 11, all of which are installed on the lower docking lifting frame 16. The lower docking plate 11 is pivotally connected to the lower docking lifting frame 16, one end of the lower return cylinder 12 is pivotally connected to the lower docking plate 11, and the other end of the lower return cylinder 12 is pivotally connected to the lower docking lifting frame 16, so that the lower docking plate 11 can be vertically pivoted under the drive of the lower return cylinder 12. In this way, when the lower docking unit needs to support the heavy object 02, the lower docking plate 11 can be lifted and set horizontally so that the heavy object 02 can be placed on the lower docking plate 11. When the heavy object 02 needs to be moved to the lower flow rack unit 15, the lower docking plate 11 can be tilted to move the heavy object 02 from the lower docking plate 11 to the lower flow rack unit 15. Specifically, in the energy storage stage, the lower connecting plate 11 is kept horizontal, and the weight block 02 is moved from the lower flow rack unit 15 to the lower connecting plate 11, and then the weight block 02 is taken away by the conveying module to be sent to the upper flow rack unit 01; in the energy release stage, the lower connecting plate 11 is first kept horizontal, and the weight block 02 moves from top to bottom with the conveying module to the lower connecting plate 11, and then the lower reset cylinder 12 drives the lower connecting plate 11 to pivot, so that the lower connecting plate 11 is tilted, and then the weight block 02 is moved to the lower flow rack unit 15 for storage, and then the lower connecting plate 11 is rotated in the opposite direction to return to the horizontal position.

[0075] Optionally, the second vertical movement assembly includes a second roller and a second drive member, both mounted on the lower docking lift frame 16. A second guide rail extending vertically is provided on the building body 20 (the second guide rail, second roller, and second drive member are not shown). The second drive member is in driving connection with the second roller, and the second roller and the second guide rail are vertically movable, enabling the lower docking unit to move vertically along the second guide rail. This allows the lower docking unit to move vertically between the lower flow rack units 15. It is understood that vertical pivoting refers to the ability of the lower docking plate 11 to pivot about an axially horizontally disposed rotation axis.

[0076] like 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, wherein 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 matched with the active transmission wheel 05 in transmission. The constant speed mechanism 31 controls the speed of the active transmission wheel 05 through the constant speed motor 27 to ensure stable output during power generation, and the speed-increasing gearbox 29 increases the speed of the active transmission wheel 05 to the rated range of the generator 30, thereby improving 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, wherein the constant speed mechanism 31, the gearbox 26, the small transmission wheel 32 and the large transmission wheel 25 are sequentially matched in transmission, and the large transmission wheel 25 is used to cooperate with the active transmission wheel 05 to achieve power transmission.

[0077] like Figure 8 and Figure 9 As shown, optionally, the energy conversion module includes two controllable clutches 28, the energy conversion module also includes a clutch linkage mechanism and an energy storage motor 33, the transmission unit includes a gearbox 26, the gearbox 26 is transmission-connected to the constant speed mechanism 31 through one controllable clutch 28, the gearbox 26 is transmission-connected to the energy storage motor 33 through another controllable clutch 28, and the clutch linkage mechanism is connected to the two controllable clutches 28. Preferably, the clutch linkage mechanism preferably includes a drive cylinder 34 fixed to the building body 20 and a U-shaped connector 35 fixed to the drive cylinder 34, the two ends of the U-shaped connector 35 are respectively connected to the two controllable clutches 28, and the drive cylinder 34 controls the two controllable clutches 28 by driving the U-shaped connector 35.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Gravity energy storage system, characterized in that, It includes building modules, connecting modules, transport modules, energy conversion modules and multiple heavy 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 in a vertical direction, each of the lower flow rack units is arranged in a vertical direction, 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 connecting 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 blocks in the vertical direction. The docking module includes an upper docking unit and a lower docking unit, the upper docking unit is used to move in the vertical direction to transfer the heavy objects between each of the upper flow rack units and the conveying module, and the lower docking unit is used to move in the vertical direction to transfer the heavy objects between each of the lower flow rack units and the conveying module, thereby realizing the transfer of the heavy objects between the upper flow rack unit and the lower flow rack unit. The upper docking unit includes an upper docking lifting frame and a first vertical moving assembly installed on the upper docking lifting frame. The first vertical moving assembly includes a first roller and a first driving member both installed on the upper docking 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. The first roller and the first guide rail are movably matched in the vertical direction so that the upper docking unit can move in the vertical direction along the first guide rail. The lower docking unit includes a lower docking lifting frame and a second vertical moving component installed on the lower docking lifting frame, the second vertical moving component includes a second roller and a second driving member both installed on the lower docking lifting frame, a second guide rail extending in the vertical direction is provided on the building body, the second driving member is transmission-connected to the second roller, and the second roller is movably matched with the second guide rail in the vertical direction, so that the lower docking unit can move in the vertical direction along the second guide rail.

2. The gravity energy storage system according to claim 1, characterized in that: 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 connected to the active transmission wheel, and the active transmission wheel and the driven transmission wheel are connected via the flexible transmission member. The hanging members are 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 to be hung with the hanging part.

3. The gravity energy storage system according to claim 2, characterized in that: The upper flow rack unit and the lower flow rack unit are both used to transport the heavy object block in the first direction. The conveying module includes two conveying units. The two conveying units are mirror-imaged in the second direction. The hanging parts are formed on both sides of the heavy object block in the second direction. The first direction and the second direction are both horizontally arranged, and the first direction is perpendicular to the second direction.

4. The gravity energy storage system according to claim 3, characterized in that: The hanging part includes a chain ratchet, the hanging part is a ratchet part, and the chain ratchet is an elastic structure.

5. The gravity energy storage system according to claim 3, characterized in that: The upper docking unit includes an upper reset cylinder and an upper docking plate, both of which are installed on the upper docking lifting frame. The upper docking plate is pivotally connected to the upper docking lifting frame. One end of the upper reset cylinder is pivotally connected to the upper docking plate, and the other end of the upper reset cylinder is pivotally connected to the upper docking lifting frame, so that the upper docking plate can be vertically pivoted under the drive of the upper reset cylinder.

6. The gravity energy storage system according to claim 5, characterized in that: The upper docking unit also includes two docking hook assemblies, which include a docking hook and a docking gear. In the length direction of the docking hook, one end of the docking hook is a hook portion, and the docking gear is fixed to the other end of the docking hook. The docking gear and the docking hook are both pivotally connected to the upper docking lifting frame through a rotating shaft. The docking gear is located above the upper docking plate, and the two docking gears are engaged. The two docking hook assemblies are symmetrically arranged on both sides of the upper docking plate in the second direction, and the two hook portions are used to hook with the upper docking plate so that the upper docking plate is in a horizontal state. The two conveying units are used to slide with the two docking hooks in a one-to-one corresponding manner so that the two docking hooks are separated from the upper docking plate.

7. The gravity energy storage system according to claim 6, characterized in that: An inclined slide groove is formed on the connecting hook, and the inclined slide groove extends obliquely relative to the vertical direction, and the bottom end of the inclined slide groove is closer to the upper connecting plate than the top end of the inclined slide groove, and the two hanging parts are slidably matched with the two inclined slide grooves in a one-to-one correspondence.

8. The gravity energy storage system according to any one of claims 5 to 7, characterized in that: The lower docking unit includes a lower reset cylinder and a lower docking plate, both of which are installed on the lower docking lifting frame. The lower docking plate is pivotally connected to the lower docking lifting frame. One end of the lower reset cylinder is pivotally connected to the lower docking plate, and the other end of the lower reset cylinder is pivotally connected to the lower docking lifting frame, so that the lower docking plate can be vertically pivoted under the drive of the lower reset cylinder.

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