Vertical lifting type gravity flow energy storage system

Abstract

The utility model discloses a vertical lifting type gravity flow energy storage system, and relates to the technical field of gravity energy storage. Comprising a guide device, a carrying cable, a first steering structure, a second steering structure, a carrying device, an energy storage device, a driving device and a power generation device; the carrying cable circularly operates between the first steering structure and the second steering structure; the driving device drives the carrying cable to operate, so that the multiple energy storage devices are sequentially and vertically lifted to convert electric energy into gravitational potential energy to be stored; and the plurality of carrying devices loaded with the energy storage devices walk along the guide device to drive the power generation device to generate power so as to convert continuous gravity flow into continuous energy flow, so that continuous discharge is realized. The utility model provides a vertical lifting type gravity flow energy storage system, and aims to solve the technical problems that continuous gravity flow cannot be formed when a single energy storage block is lifted in a steel wire rope winding / friction manner, or the bearing capacity is limited and the effective load is reduced due to the fact that a chain structure is adopted as a main carrying device of the energy storage block in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of gravity energy storage, and particularly relates to a vertical lifting gravity flow energy storage system. Background Art

[0002] Renewable energy represented by wind energy and solar energy has grown rapidly, and its volatility and intermittency pose challenges to the stability of the power grid. Energy storage technology has become a key means to balance supply and demand and ensure the stability of the power grid. Electrochemical energy storage (such as lithium-ion batteries) has problems of raw material dependence (such as lithium resources) and safety risks; pumped storage is limited by geographical conditions and water resources and is difficult to be popularized in water-scarce and complex terrain areas. Against this background, gravity energy storage based on height difference for power generation has gradually attracted attention due to its advantages such as not relying on water resources, flexible siting, and long service life (for example, up to 50 years). As a form of gravity energy storage, vertical lifting energy storage realizes energy storage and release through the vertical lifting of heavy objects, and vertical lifting energy storage does not need to rely on natural water bodies or complex terrains and can be deployed in abandoned mines, urban underground spaces or ground structures, especially suitable for water-scarce areas in northern China and urban microgrid scenarios, which can expand the energy storage coverage. Although the existing vertical lifting energy storage system has verified the technical feasibility, there are still the following technical problems: One type of vertical lifting energy storage system uses a wire rope winding type / friction type lifting device, and lifting a single energy storage block cannot form a continuous gravity flow; the other type uses a chain structure as the main carrier device for the energy storage block, but the mechanical strength of the chain structure limits its bearing capacity, and the self-weight of the chain structure is relatively large, which reduces the effective load of lifting the energy storage block to a certain extent, thus limiting the power generation efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a vertical lifting gravity flow energy storage system to solve, to a certain extent, the technical problems in the prior art that using a wire rope winding type / friction type to lift a single energy storage block cannot form a continuous gravity flow, or using a chain structure as the main carrier device for the energy storage block leads to limited bearing capacity and reduced effective load.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A vertical lifting gravity flow energy storage system includes a guiding device, a carrier cable, a first steering structure, a second steering structure, a carrier device, an energy storage device, a driving device and a power generation device;

[0006] The carrier cable circulates between the first steering structure and the second steering structure, and a plurality of the carrier devices are fixedly connected to the carrier cable; wherein, the second steering structure is located above the first steering structure;

[0007] The guiding device is annular and is slidably connected to the carrying device;

[0008] The energy storage device is detachably connected to the carrying device;

[0009] The driving device is connected to the first steering structure and / or the second steering structure so as to be able to drive the carrying cable to run in the first direction, and further drive all the carrying devices to run along the guiding device, thereby successively vertically lifting a plurality of the energy storage devices to convert electrical energy into gravitational potential energy for storage;

[0010] The power generation device is connected to the first steering structure and / or the second steering structure; a plurality of the carrying devices loaded with the energy storage devices run along the guiding device to successively lower the plurality of the energy storage devices to form a continuous gravity flow, and at the same time drive the first steering structure and the second steering structure to run along the second direction along with the carrying cable to drive the power generation device to generate electricity, so as to convert the continuous gravity flow into a continuous energy flow, thereby realizing continuous power discharge; wherein, the first direction is opposite to the second direction.

[0011] In a possible implementation manner, the carrying device includes a carrying frame, a connecting frame, a suspension device and a rope connecting structure; the carrying device has a first direction, a second direction and a third direction that intersect pairwise;

[0012] The carrying frame includes at least two carrying sub-frames; all the carrying sub-frames are arranged at intervals in sequence along the first direction; each carrying sub-frame is connected with at least two of the rope connecting structures arranged in sequence along the second direction; the rope connecting structures are fixedly connected to the carrying cable;

[0013] Along the third direction, the connecting frame and the carrying cable are respectively located on both sides of the carrying frame; each carrying sub-frame is respectively connected to the connecting frame, and the suspension device is connected to the connecting frame;

[0014] The energy storage device is detachably connected to the suspension device.

[0015] In a possible implementation manner, the number of the carrying sub-frames is two, which are a first carrying sub-frame and a second carrying sub-frame respectively;

[0016] The number of the rope connecting structures on the first carrying sub-frame, the number of the rope connecting structures on the second carrying sub-frame and the number of the carrying cables are the same; and along the first direction, the rope connecting structures on the first carrying sub-frame and the rope connecting structures on the second carrying sub-frame are respectively fixedly connected to the corresponding carrying cables;

[0017] The connecting frame includes a support rod, a pull rod, and a connecting shaft; one end of the support rod is pin-connected to one end of the pull rod, the other end of the pull rod is pivotally connected to the first carrying sub-frame, and the other end of the support rod is pivotally connected to the second carrying sub-frame, so that the support rod and the pull rod form an angle rod structure; the number of the angle rod structures is multiple, and the multiple angle rod structures are arranged at intervals in sequence along the second direction; the connecting shaft is connected to all the angle rod structures;

[0018] The suspension device is rotatably connected to the connecting shaft and is used for hanging and connecting the energy storage device.

[0019] In a possible implementation manner, the pull rod includes two pull rod parts; the two pull rod parts have the same length and are hinged to each other; the plane formed by the first carrying sub-frame and the second carrying sub-frame can form a right triangle with the support rod and the pull rod in the first direction;

[0020] The length of the support rod is a, and the included angle between the pull rod and the support rod is α, then the length of the pull rod is a / cosα, and the vertical distance between the centers of the first carrying sub-frame and the second carrying sub-frame is y: y = a·tanα;

[0021] The radii of the first steering structure and the second steering structure are both r. When the carrying device runs to the first steering structure or the second steering structure, the central angle corresponding to y is 2β, and the included angle between the pull rod part and the tangent of the outer circumferential surface of the first steering structure or the second steering structure is θ; then

[0022] ;

[0023] If 90° < θ, then y is greater than

[0024] .

[0025] In a possible implementation manner, the pull rod includes at least two pull rod parts, and the multiple pull rod parts are hinged in sequence; the hinge axes of all the pull rod parts, the pin connection axis of the support rod and the pull rod, the pivot connection axis of the pull rod and the first carrying sub-frame, and the pivot connection axis of the support rod and the second carrying sub-frame are parallel;

[0026] The connecting shaft is the pin connection axis of the support rod and the pull rod.

[0027] In a possible implementation manner, the pull rod includes two pull rod parts;

[0028] When the first carrying sub-frame is parallel to the second carrying sub-frame, the plane where the first carrying sub-frame and the second carrying sub-frame are located is perpendicular to the support rod.

[0029] In a possible implementation manner, along the second direction, guide rail grooves that cooperate with the guiding device are provided at two ends of the carrier trolley, and the guide rail grooves are open at both ends along the first direction; in the second direction, the cross-section of the guide rail groove is T-shaped, and a third opening of the guide rail groove is located on a side away from the center of the carrier trolley; a part of the guiding device extends out of the third opening of the guide rail groove and is used for fixing to a building.

[0030] In a possible implementation manner, the guiding device adopts a profile with a T-shaped structure;

[0031] Guide sleeves are fixedly connected to two ends of the carrier trolley, and the guide rail grooves are arranged in the guide sleeves; the third opening of the guide rail groove is arranged at an end of the guide sleeve away from the carrier trolley.

[0032] In a possible implementation manner, the rope connection structure includes a cable clamping member, a locking member, and a fastening member; the cable clamping member includes an end part and a screw part that are fixedly connected;

[0033] At least one of the end part of the cable clamping member and the locking member has a cable groove for accommodating the carrier cable;

[0034] The locking member, the fastening member, the carrier trolley, and the fastening member are sequentially sleeved on the screw part of the cable clamping member; the fastening member between the locking member and the carrier trolley is used for clamping and fixing the carrier cable by the locking member and the cable clamping member; the fastening member on a side of the carrier trolley away from the locking member is used for fastening the rope connection structure to the carrier trolley.

[0035] In a possible implementation manner, the end part of the cable clamping member includes a straight part and a transition part;

[0036] Along the axial direction of the cable groove, the transition parts are fixedly connected to both ends of the straight part; the outer diameter of the transition part gradually decreases, the large-diameter end of the transition part is connected to the straight part, and the outer diameter of the straight part is a constant value;

[0037] Both the cable clamping member and the locking member are provided with cable grooves;

[0038] The cable groove penetrates through the straight part and the transition part.

[0039] In a possible implementation manner, the axial direction of the first steering structure and the axial direction of the second steering structure are both parallel to the horizontal direction;

[0040] The first steering structure and the second steering structure are respectively a steering wheel or a winding drum;

[0041] When the first steering structure or the second steering structure is a steering wheel, the number of the steering wheels of the first steering structure or the second steering structure is the same as the number of the carrier cables, and the steering wheels are provided with grooves matching the carrier cables; all the steering wheels of the first steering structure or the second steering structure are connected by a coupling, and the driving device or the power generation device is respectively connected to the coupling;

[0042] When the first steering structure or the second steering structure is a drum, the drum is provided with grooves the same in number as all the carrier cables, and the driving device or the power generation device is respectively connected to the shaft of the drum;

[0043] Both the first steering structure and the second steering structure are connected to a support;

[0044] The driving device and the power generation device are an electric generator, or the driving device and the power generation device are independent of each other.

[0045] In a possible implementation manner, the number of the guiding devices is two, and the number of the carrier cables is multiple; all the carrier cables are located between the two guiding devices;

[0046] The carrier cables and the energy storage device are located on both sides of the carrier device;

[0047] Rolling elements are arranged between the guiding device and the carrier device; the rolling elements are located inside the carrier device and on at least one corresponding mating surface between the carrier device and the guiding device;

[0048] The first steering structure is located at a low altitude, and the second steering structure is located at a high altitude opposite to the low altitude; the vertical lifting gravity flow energy storage system further includes a transfer device; the transfer device is provided at both the low altitude and the high altitude; the energy storage device is reciprocally transported between the stacking yard and the carrier device through the transfer device.

[0049] Adopting the above technical solution, the beneficial effects of the present utility model are mainly as follows:

[0050] The vertical lifting gravity flow energy storage system provided by the present utility model is driven by a carrier cable to move the carrier device, and can thus drive and carry the energy storage device to move. When the carrier device moves, the guiding device provides guidance and bears, for example, the shock force in the horizontal direction, effectively improving the stability and safety of the energy storage device during movement. Compared with the chain structure, the carrier cable has a stronger bearing capacity and a relatively smaller self-weight, effectively improving the bearing capacity and load utilization rate of the vertical lifting gravity flow energy storage system. Compared with the intermittent lifting of a single energy storage device by the wire rope winding / friction lifting structure, the vertical lifting gravity flow energy storage system can continuously transport multiple energy storage devices through the cyclic operation of the carrier cable between the first steering structure and the second steering structure. The driving device can drive the carrier device, not only improving the system's transport capacity, but also providing a continuous gravity flow, which can be converted into a continuous energy flow by the power generation device, thereby realizing continuous discharging.

[0051] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, in conjunction with the accompanying drawings, and are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0053] Figure 1 It is a schematic structural diagram of the vertical lifting gravity flow energy storage system provided by the embodiment of the present utility model;

[0054] Figure 2 and Figure 3 is Figure 1 a partially enlarged view of the vertical lifting gravity flow energy storage system shown;

[0055] Figure 4 is Figure 1 a partially enlarged view of area A of the vertical lifting gravity flow energy storage system shown;

[0056] Figure 5 It is a schematic structural diagram of the second steering structure, driving device, and power generation device provided by the embodiment of the present utility model;

[0057] Figure 6 It is a schematic structural diagram of the carrier device provided by the embodiment of the present utility model;

[0058] Figure 7 is Figure 6 another perspective structural diagram of the carrier device shown;

[0059] Figure 8 This is a schematic structural diagram of the rope connection structure provided by the embodiment of the present utility model.

[0060] Icon: 110 - guiding device; 120 - carrying cable; 130 - first steering structure; 140 - second steering structure; 160 - drum; 200 - carrying device; 210 - carrying frame; 211 - first carrying sub-frame; 212 - second carrying sub-frame; 213 - guide rail groove; 214 - guide sleeve; 220 - connecting frame; 221 - support rod; 222 - pull rod; 223 - connecting shaft; 230 - suspension device; 240 - rope connection structure; 241 - cable clamping member; 2411 - cable groove; 2412 - straight portion; 2413 - transition portion; 242 - locking member; 243 - fastening member; 300 - energy storage device; 400 - driving device; 500 - power generation device; 600 - transfer equipment. Detailed implementation manners

[0061] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Components of the embodiments of the present utility model described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0062] Therefore, the detailed description of the embodiments of the present utility model provided in the drawings below is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0063] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0064] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is customarily placed during use. It is only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0065] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0066] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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 communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0067] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0068] Embodiment

[0069] This embodiment provides a vertical lifting gravity flow energy storage system, which can be used to store electric energy, especially the unstable electric energy generated by power generation technologies such as wind power and photovoltaic power, and can also be used to generate continuous discharge.

[0070] See Figures 1-8 As shown, the vertical lifting gravity flow energy storage system includes a guiding device 110, a carrier cable 120, a first steering structure 130, a second steering structure 140, a carrier device 200, an energy storage device 300, a driving device 400, and a power generation device 500.

[0071] The guiding device 110 is annular, and the guiding device 110 is slidably connected to the carrier device 200; optionally, rolling elements are provided between the guiding device 110 and the carrier device 200; the rolling elements are located inside the carrier device 200, and the rolling elements are located on at least one corresponding mating surface between the carrier device 200 and the guiding device 110; through the rolling elements, the frictional resistance when the carrier device 200 moves along the guiding device 110 can be effectively reduced. In this embodiment, the rolling elements are, for example, ball bearings, rolling bearings, etc.

[0072] The carrier cable 120 circulates between the first turning structure 130 and the second turning structure 140, and a plurality of carrier devices 200 are fixedly connected to the carrier cable 120; wherein, the second turning structure 140 is located above the first turning structure 130; for example, the second turning structure 140 is located directly above the first turning structure 130 or a position similar to directly above. For example, the first turning structure 130 is located at a low altitude, and the second turning structure 140 is located at a high altitude opposite to the low altitude. In this embodiment, the altitude of the high altitude is higher than the altitude of the low altitude. In one embodiment, the vertical lifting type gravity flow energy storage system further includes a transfer device 600; transfer devices 600 are provided at both the low altitude and the high altitude; the energy storage device 300 is reciprocally transported between the stacking yard and the carrier device 200 through the transfer device 600 to realize charging energy storage and discharging; wherein, the stacking yard is used to store the energy storage device 300; optionally, stacking yards are provided at both the low altitude and the high altitude.

[0073] The energy storage device 300 is detachably connected to the carrier device 200; through the detachable connection between the energy storage device 300 and the carrier device 200, it is convenient for the carrier device 200 to continuously transport the energy storage device 300 to a high position or a low position in a cycle to realize charging energy storage and discharging.

[0074] The driving device 400 is connected to the first turning structure 130 and / or the second turning structure 140 to be able to drive the carrier cable 120 to operate in a first direction. At this time, both the first turning structure 130 and the second turning structure 140 rotate around the first direction; when the carrier cable 120 operates in the first direction, the carrier cable 120 can drive all the carrier devices 200 to operate along the guiding device 110, so as to continuously vertically lift a plurality of energy storage devices 300 to convert electrical energy into gravitational potential energy for storage and realize the charging function. Among them, the driving device 400 is connected to the first turning structure 130 and / or the second turning structure 140, specifically, the driving device 400 is connected to the first turning structure 130, or the driving device 400 is connected to the second turning structure 140, or the driving device 400 is connected to the first turning structure 130 and the second turning structure 140.

[0075] The power generation device 500 is connected to the first steering structure 130 and / or the second steering structure 140; a plurality of carrier devices 200 loaded with energy storage devices 300 travel along the guiding device 110 to successively lower the plurality of energy storage devices 300 to form a continuous gravity flow, while driving the first steering structure 130 and the second steering structure 140 to rotate along the second direction with the carrier cable 120, so as to drive the power generation device 500 to generate electricity, and convert the continuous gravity flow into a continuous energy flow, thereby realizing continuous discharge; wherein, the first direction is opposite to the second direction. For example, if the first direction is the clockwise direction, the second direction is the counterclockwise direction, and vice versa. In this embodiment, the driving device 400 drives the carrier cable 120 to tow the carrier device 200 to travel along the guiding device 110 through the first steering structure 130 and the second steering structure 140, and conveys the energy storage device 300 to lift and lower, so that the gravity flow formed by several energy storage devices 300 continuously walking online is converted into a continuous energy flow, thereby realizing continuous charge and discharge.

[0076] Optionally, the shape of the guiding device 110 is adapted to the shape of the carrier cable 120, and both the guiding device 110 and the carrier cable 120 are annular. In this embodiment, the guiding device 110 basically does not bear the load force and only provides guidance.

[0077] Optionally, both the first steering structure 130 and the second steering structure 140 are connected to the support. For example, the support is connected to the ground, a building, etc., and both the first steering structure 130 and the second steering structure 140 are supported by the support.

[0078] In the vertical lifting gravity flow energy storage system described in this embodiment, the carrier cable 120 is used to tow and carry the movement of the carrier device 200, and then can tow and carry the movement of the energy storage device 300. When the carrier device 200 moves, the guiding device 110 provides guidance and bears, for example, the shock force in the horizontal direction, effectively improving the stability and safety of the energy storage device 300 during movement; compared with the chain structure, the carrier cable 120 has a stronger bearing capacity and a relatively smaller self-weight, effectively improving the bearing capacity and load utilization rate of the vertical lifting gravity flow energy storage system; compared with the intermittent lifting of a single energy storage device by the wire rope winding / friction lifting structure, the vertical lifting gravity flow energy storage system can continuously transport a plurality of energy storage devices 300 through the cyclic operation of the carrier cable 120 between the first steering structure 130 and the second steering structure 140. The driving device 400 can drive the carrier device 200 to continuously transport a plurality of energy storage devices 300, which not only improves the system transport capacity, but also provides a continuous gravity flow, and can convert the continuous gravity flow into a continuous energy flow through the power generation device 500, thereby realizing continuous discharge.

[0079] See Figure 6 and Figure 7As shown, in an alternative solution of this embodiment, the carrier device 200 includes a carrier frame 210, a connecting frame 220, a suspension device 230, and a rope connection structure 240; the carrier device 200 has a first direction, a second direction, and a third direction that intersect pairwise; the first direction is, for example, the vertical direction, and the second direction is, for example, parallel to the axial directions of the first steering structure 130 and the second steering structure 140. Optionally, the first direction, the second direction, and the third direction are pairwise perpendicular to each other.

[0080] The carrier frame 210 includes at least two carrier sub - frames; all the carrier sub - frames are arranged at intervals in sequence along the first direction; each carrier sub - frame is connected to the carrier rope 120 through the rope connection structure 240. For example, each carrier sub - frame is connected with at least two rope connection structures 240 arranged in sequence along the second direction, and the rope connection structure 240 is fixedly connected to the carrier rope 120. Correspondingly, the number of carrier ropes 120 is multiple; along the first direction, at least some of the rope connection structures 240 corresponding to the carrier sub - frames are connected to the same carrier rope 120; optionally, along the first direction, all the rope connection structures 240 corresponding to the carrier sub - frames are connected to the same carrier rope 120.

[0081] Along the third direction, the connecting frame 220 and the carrier rope 120 are respectively located on both sides of the carrier frame 210; each carrier sub - frame is respectively connected to the connecting frame 220, and the suspension device 230 is connected to the connecting frame 220; the energy storage device 300 is detachably connected to the suspension device 230; that is, the carrier rope 120 and the energy storage device 300 are located on both sides of the carrier device 200. By arranging the connecting frame 220 and the carrier rope 120 on both sides of the carrier frame 210, it is effectively avoided that the energy storage device 300 suspended on the suspension device 230 interferes with the carrier rope 120 during movement, and to a certain extent, the stability of the operation of the vertical - lift gravity - flow energy storage system is guaranteed.

[0082] Optionally, the number of carrier sub - frames is two, which are the first carrier sub - frame 211 and the second carrier sub - frame 212 respectively. The number of the rope connection structures 240 on the first carrier sub - frame 211, the rope connection structures 240 on the second carrier sub - frame 212, and the carrier rope 120 is the same; and along the first direction, the rope connection structures 240 on the first carrier sub - frame 211 and the rope connection structures 240 on the second carrier sub - frame 212 are respectively fixedly connected to the corresponding carrier ropes 120.

[0083] Optionally, the number of guiding devices 110 is two, and the number of carrier ropes 120 is multiple; all the carrier ropes 120 are located between the two guiding devices 110.

[0084] Optionally, the guiding device 110 and the carrier rope 120 are not coplanar.

[0085] Optionally, the connecting frame 220 includes a support rod 221, a pull rod 222, and a connecting shaft 223; one end of the support rod 221 is pin-connected to one end of the pull rod 222, the other end of the pull rod 222 is pivotally connected to the first carrying sub-frame 211, and the other end of the support rod 221 is pivotally connected to the second carrying sub-frame 212, so that the support rod 221 and the pull rod 222 form an angle rod structure; the number of angle rod structures is multiple, and the multiple angle rod structures are arranged at intervals in sequence along the second direction; the connecting shaft 223 is connected to all the angle rod structures. Through the connecting shaft 223 and the multiple angle rod structures, the bearing capacity and bearing strength of the connecting frame 220 are improved. Optionally, the number of angle rod structures is, for example, 3, 5, 6, or 8; the specific number of angle rod structures can be determined according to factors such as the mass of the energy storage device 300, the bearing capacity of the support rod 221 and the pull rod 222, etc.

[0086] The suspension device 230 is rotatably connected to the connecting shaft 223, and the suspension device 230 is used to suspend and connect the energy storage device 300. By suspending the energy storage device 300 on the suspension device 230, it is beneficial to maintain the balance ability of the carrying device 200, and the energy storage device 300 can be transported more smoothly.

[0087] In the vertical lifting gravity flow energy storage system described in this embodiment, the first carrying sub-frame 211, the second carrying sub-frame 212, the support rod 221, the pull rod 222, and the connecting shaft 223 are used to form a triangular structure, which helps to improve the stability of the carrying device 200 and the energy storage device 300 during movement, and also helps to improve the bearing capacity of the carrying device 200; by pin-connecting one end of the support rod 221 to one end of the pull rod 222, pivotally connecting the other end of the pull rod 222 to the first carrying sub-frame 211, and pivotally connecting the other end of the support rod 221 to the second carrying sub-frame 212, it is convenient for the carrying device 200 to pass through the first steering structure 130 and the second steering structure 140, which is beneficial to the steering of the carrying device 200.

[0088] See Figure 6 and Figure 7 As shown, in an alternative solution of this embodiment, the pull rod 222 includes two pull rod parts; the lengths of the two pull rod parts are the same and they are hinged to each other; the plane formed by the first carrying sub-frame 211 and the second carrying sub-frame 212 can form a right triangle with the support rod 221 and the pull rod 222 in the first direction. By being able to form a right triangle in the first direction by the first carrying sub-frame 211, the second carrying sub-frame 212, the support rod 221, and the pull rod 222, it helps to improve the stability of the carrying device 200 and the energy storage device 300 during movement, and also helps to improve the bearing capacity of the carrying device 200.

[0089] For example, if the length of the support rod 221 is a and the angle between the pull rod 222 and the support rod 221 is α, then the length of the pull rod 222 is a / cosα, and the vertical distance y between the centers of the first carrying sub-frame 211 and the second carrying sub-frame 212 is: y = a·tanα.

[0090] The radii of both the first steering structure 130 and the second steering structure 140 are r. When the carrying device 200 runs to the first steering structure 130 or the second steering structure 140, the central angle corresponding to y is 2β, and the angle between the pull rod part and the tangent of the outer circumferential surface of the first steering structure 130 or the second steering structure 140 is θ; then

[0091] ;

[0092] If 90° < θ, then y is greater than

[0093] .

[0094] When the carrying device 200 runs to the top or bottom of the carrying cable 120, that is, when the carrying device 200 reaches the top of the second steering structure 140 or the bottom of the first steering structure 130, the relative relationship between the first carrying sub-frame 211 and the second carrying sub-frame 212 reaches the limit. At this time, the arc length occupied by the carrying device 200 on the outer circumferential surface of the first steering structure 130 or the second steering structure 140 is a·tanα, that is, the arc length occupied by the carrying device 200 on the outer circumferential surface of the first steering structure 130 or the second steering structure 140 is y, and the central angle corresponding to y is 2β, then 2β = a·tanα / r. According to the geometric composition, the angle θ between the pull rod part (that is, the length of the pull rod part, which is half of the length of the pull rod 222) and the tangent of the outer circumferential surface of the first steering structure 130 or the second steering structure 140 can be deduced:

[0095] .

[0096] Since the maximum limit of the pull rod part can only be tangent to the outer circumferential surface of the first steering structure 130 or the second steering structure 140, so 90° < θ. Therefore, it can be deduced that the vertical distance y between the centers of the first carrying sub-frame 211 and the second carrying sub-frame 212 should satisfy: y >

[0097] .

[0098] See Figure 6 and Figure 7As shown, in an optional scheme of this embodiment, the pull rod 222 includes at least two pull rod parts, and the multiple pull rod parts are hinged in sequence; the hinge axes of all the pull rod parts, the pin-jointed axes of the support rod 221 and the pull rod 222, the pivot axis of the pull rod 222 and the first transport frame 211, and the pivot axis of the support rod 221 and the second transport frame 212 are parallel; the above design helps to improve the flexibility of the carrier 200 and facilitates the carrier 200 to turn on the first steering structure 130 and the second steering structure 140.

[0099] Optionally, the connecting shaft 223 is a pin-connected shaft between the support rod 221 and the pull rod 222 , which helps to further improve the flexibility of the carrier 200 and facilitates the carrier 200 to turn on the first steering structure 130 and the second steering structure 140 .

[0100] Optionally, the first transport frame 211 is provided with a support pivotally connected to the pull rod 222 ; optionally, the second transport frame 212 is provided with a support pivotally connected to the support rod 221 .

[0101] In some embodiments, the pull rod 222 includes two pull rod parts; when the first small carrier rack 211 is parallel to the second small carrier rack 212 , the plane where the first small carrier rack 211 and the second small carrier rack 212 are located is perpendicular to the support rod 221 .

[0102] See also Figure 6 As shown, in an optional solution of this embodiment, along the second direction, two ends of the transport frame are provided with guide grooves 213 cooperating with the guide device 110, and the guide grooves 213 are open at both ends along the first direction; in the second direction, the cross section of the guide groove 213 is T-shaped, and the third opening of the guide groove 213 is located on the side away from the center of the transport frame; a part of the guide device 110 extends out of the third opening of the guide groove 213 and is used to be fixed to the building. The building can be a high-rise building or a well wall. By adopting the T-shaped guide groove 213, it does not affect the movement of the transport device 200 along the guide device 110, and the guide device 110 can be fixed, so that the guide device 110 can well bear the shock force in the horizontal direction.

[0103] In an optional solution of this embodiment, the guide device 110 adopts a T-shaped profile.

[0104] In an alternative solution of this embodiment, guide sleeves 214 are fixedly connected to both ends of the carrier carriage, and the guide rail groove 213 is arranged inside the guide sleeve 214; the third opening of the guide rail groove 213 is arranged at the end of the guide sleeve 214 facing away from the carrier carriage. By means of the guide sleeve 214, the processing technology of the carrier carriage is simplified, which helps to reduce the production cost of the conveying device 200. By using the guiding device 110 with a T-shaped structural profile in cooperation with the guide sleeve 214, multiple track surfaces of the guiding device 110 and the guide sleeve 214 can be in contact, which is beneficial for the guide sleeve 214 to slide on the guiding device 110 and be guided and fixed in the second direction and the third direction.

[0105] Optionally, rolling elements are arranged between the guiding device 110 and the conveying device 200; the rolling elements are located inside the guide sleeve 214, and the rolling elements are located on at least one corresponding mating surface between the guide sleeve 214 and the guiding device 110; for example, rolling elements are arranged on all inner walls of the guide sleeve 214 that cooperate with the guiding device 110.

[0106] See Figure 8 As shown, in an alternative solution of this embodiment, the rope connection structure 240 includes a cable clip 241, a locking fastener 242 and a fastening member 243; the cable clip 241 includes a fixedly connected end portion and a screw portion.

[0107] Optionally, at least one of the end portion of the cable clip 241 and the locking fastener 242 has a cable groove 2411 for accommodating the conveying cable 120. Optionally, both the cable clip 241 and the locking fastener 242 are provided with the cable groove 2411 to reduce or avoid possible damage to the conveying cable 120 when the cable clip 241 and the locking fastener 242 are fastened.

[0108] Optionally, the screw portion of the cable clip 241 is sequentially sleeved with the locking fastener 242, the fastening member 243, the carrier carriage and the fastening member 243; the fastening member 243 between the locking fastener 242 and the carrier carriage is used to clamp and fix the conveying cable 120 between the locking fastener 242 and the cable clip 241; the fastening member 243 on the side of the carrier carriage facing away from the locking fastener 242 is used to fasten the rope connection structure 240 to the carrier carriage.

[0109] See Figure 8 As shown, in an alternative solution of this embodiment, the end portion of the cable clip 241 includes a flat portion 2412 and a transition portion 2413.

[0110] Axially along the cable groove 2411, both ends of the straight part 2412 are fixedly connected with transition parts 2413; the outer diameter of the transition part 2413 gradually decreases, the large-diameter end of the transition part 2413 is connected with the straight part 2412, and the outer diameter of the straight part 2412 is a constant value; through the transition part 2413, the contact between the conveying device 200 and the first steering structure 130 and the second steering structure 140 is transitioned and buffered, which is beneficial to the steering of the conveying device 200 on the first steering structure 130 and the second steering structure 140, and can effectively improve the working life of the conveying device 200 and the conveying cable 120.

[0111] Optionally, both the cable clamping member 241 and the locking member 242 are provided with cable grooves 2411; the cable grooves 2411 penetrate through the straight part 2412 and the transition part 2413.

[0112] In an alternative embodiment of the present embodiment, the axial directions of both the first steering structure 130 and the second steering structure 140 are parallel to the horizontal direction.

[0113] In an alternative embodiment of the present embodiment, the first steering structure 130 and the second steering structure 140 are respectively a steering wheel or a drum 160, that is, the first steering structure 130 is a steering wheel or a drum 160, and the second steering structure 140 is a steering wheel or a drum 160.

[0114] Optionally, when the first steering structure 130 or the second steering structure 140 is a steering wheel, the number of steering wheels of the first steering structure 130 or the second steering structure 140 is the same as the number of conveying cables 120, and the steering wheels are provided with wheel grooves that cooperate with the conveying cables 120; all the steering wheels of the first steering structure 130 or the second steering structure 140 are connected by a coupling, and the driving device 400 or the power generation device 500 is respectively connected to the coupling, so that the driving device 400 or the power generation device 500 respectively drives and connects all the steering wheels of the first steering structure 130 or all the steering wheels of the second steering structure 140 through the coupling, so that all the steering wheels of the first steering structure 130 rotate synchronously or all the steering wheels of the second steering structure 140 rotate synchronously.

[0115] Optionally, when the first steering structure 130 or the second steering structure 140 is a reel 160, the reel 160 is provided with wheel grooves having the same number as all the carrier cables 120, and the driving device 400 or the power generation device 500 is respectively connected to the shaft of the reel 160; that is, the first steering structure 130 is provided with a reel 160 for rotatably connecting to all the carrier cables 120; the second steering structure 140 is also provided with a reel 160 for rotatably connecting to all the carrier cables 120. In this embodiment, the first steering structure 130 or the second steering structure 140 uses wheel grooves to increase the friction between the carrier cable 120 and the first steering structure 130 and the second steering structure 140, and can also prevent the carrier cable 120 from detaching from the first steering structure 130 and the second steering structure 140.

[0116] In this embodiment, the driving device 400 can be arranged at a low altitude to drive and connect the first steering structure 130, or at a high altitude to drive and connect the second steering structure 140, or driving devices 400 are arranged at both low and high altitudes to drive and connect the first steering structure 130 and the second steering structure 140. When the driving device 400 is at a high altitude, the load during the energy storage process can be reduced; when it is at a low altitude, it is convenient for the installation of the driving device 400. The specific installation position of the driving device 400 can be determined according to the on-site situation.

[0117] In this embodiment, the power generation device 500 can be arranged at a low altitude to drive and connect the first steering structure 130, or at a high altitude to drive and connect the second steering structure 140, or power generation devices 500 are arranged at both low and high altitudes to connect to the first steering structure 130 and the second steering structure 140. When the power generation device 500 is at a high altitude, the load during the energy storage process can be reduced; when it is at a low altitude, it is convenient for the installation of the power generation device 500. The specific installation position of the power generation device 500 can be determined according to the on-site situation.

[0118] In some embodiments, the driving device 400 and the power generation device 500 can be integrated or separated. Optionally, the driving device 400 and the power generation device 500 are motor-generators, or the driving device 400 and the power generation device 500 are independent of each other. Among them, a motor-generator (English name: Motor-Generator) refers to a device that can function both as a motor to convert electrical energy into gravitational potential energy and as a generator to convert gravitational potential energy into electrical energy in this embodiment, and it has a two-way energy conversion function.

[0119] The vertical lifting gravity flow energy storage system provided in this embodiment has the following beneficial effects compared with the prior art:

[0120] 1. Replace the chain with a carrier cable 120 to transport the energy storage device 300: The strength of the carrier cable (such as a steel wire rope or a high-strength composite material rope) is much higher than that of the traditional chain, and it can carry a heavier energy storage device 300, which can increase the power generation per unit time. At the same time, the material density of the carrier cable is smaller, the weight is lighter, and the energy loss during lifting is less.

[0121] 2. Fix multiple energy storage devices 300 at equal intervals on the carrier cable 120: Compared with the intermittent lifting of a single energy storage device using a wire rope winding / friction structure, the vertical lifting gravity flow energy storage system described in this embodiment can continuously transport multiple energy storage devices 300 by the carrier cable 120. This not only improves the system's transportation capacity but also provides a continuous gravity flow, which can be converted into a continuous energy flow by the power generation device 500 to achieve continuous discharge.

[0122] 3. Use multiple carrier cables 120 to transport the energy storage device 300: Multiple carrier cables simultaneously pull and drive the energy storage device 300 to move and bear the load of the energy storage device 300. The multi-cable system reduces the load borne by a single cable, ensuring the safety and reliability of the system. The reduction of the cable load means that more energy storage devices 300 can be transported synchronously, improving the system's transportation capacity and ensuring the high-efficiency operation of the energy storage and power generation states, enabling high-power storage / discharge of electric energy.

[0123] 4. When the first steering structure 130 or the second steering structure 140 is a drum 160, compared with the first steering structure 130 or the second steering structure 140 being a steering wheel, the drum 160 also increases the contact area with the carrier cable 120, thereby increasing the friction between the drum 160 and the carrier cable 120, and to a certain extent improving the charging / discharging efficiency, enabling high-power storage / discharge of electric energy. In addition, the drum 160 can also provide a more uniform contact force with the carrier cable 120, effectively reducing the wear of the carrier cable 120 and extending the service life of the carrier cable 120. At the same time, the drum 160 is less likely to slip, which is more beneficial to the stability of the vertical lifting gravity flow energy storage system.

[0124] 5. The power consumption or power generation in real-time state can be arbitrarily adjusted by changing the lifting speed of the gravity flow or changing the size of the gravity flow; the energy storage device 300 stores safely and economically and accesses efficiently and quickly.

[0125] To understand more clearly the vertical lifting gravity flow energy storage system described in this embodiment, the following briefly describes the energy storage method:

[0126] During energy storage and charging, the energy storage device 300 is located at a low altitude position. The driving device 400 is driven by electric energy to drive the first steering structure 130 and the second steering structure 140 to rotate in the first direction, so as to drive the carrier cable 120 to operate in the first direction, and then drive all the carrier devices 200 to move under the traction of the carrier cable 120. A plurality of energy storage devices 300 are successively assembled on the carrier device 200 and continuously transported along the guiding device 110 to the upper storage yard at a high altitude and unloaded, so as to convert electric energy into gravitational potential energy for storage. When approaching the upper storage yard, the energy storage device 300 is separated from the carrier device 200, and the energy storage device 300 is sent into the upper storage yard and quickly transported away by a transfer vehicle for storage. The carrier device 200 continuously travels along the carrier cable 120 and finally returns to the lower storage yard again, ready to start a new round of transportation tasks for the energy storage device 300.

[0127] During discharging, the energy storage device 300 is located at the upper storage yard at a high altitude. A plurality of energy storage devices 300 are successively assembled on the carrier device 200 and walk along the guiding device 110 to the lower storage yard at a low altitude under the action of gravity and unloaded, driving the carrier cable 120 to operate in the second direction. The carrier cable 120 drives the first steering structure 130 and the second steering structure 140 to operate in the second direction, so as to drive the power generation device 500 to generate electricity continuously, thereby converting gravitational potential energy into continuous electric energy, so that the gravitational flow formed by several energy storage devices 300 walking continuously online is converted into continuous energy flow, thus realizing continuous charging and discharging. Among them, when approaching the lower storage yard, the energy storage device 300 is separated from the carrier device 200, and the energy storage device 300 is sent into the lower storage yard and transported away by a transfer vehicle for storage; while the carrier device 200 continues to travel along the carrier cable 120; finally, the carrier device 200 returns to the upper storage yard, ready to start a new round of transportation tasks for the energy storage device 300.

[0128] In one embodiment, a plurality of energy storage devices 300 are successively assembled on the carrier device 200 at a preset interval to enable continuous transportation of the energy storage devices 300. Among them, the preset interval is, for example, to assemble one energy storage device 300 on each carrier device 200, or to assemble one energy storage device 300 every other carrier device 200, or to assemble one energy storage device 300 every two carrier devices 200, etc.

[0129] The traveling speed and interval of the energy storage device 300 are adjusted in real time according to requirements to change the magnitude of the gravitational flow, so as to achieve on-demand adjustment of the energy flow, and then realize the functions of "slow charging and fast discharging" or "on-demand charging and discharging". Adjusting the traveling speed of the energy storage device 300 can be achieved, for example, by adjusting the speeds of the driving device 400 and the power generation device 500. By adjusting the traveling speed and interval of the energy storage device 300 in real time according to requirements to change the magnitude of the gravitational flow, the adaptability of the vertical lifting type gravitational flow energy storage system can be made wider.

[0130] In one embodiment, the number of vertical lifting gravity flow energy storage systems is multiple; multiple vertical lifting gravity flow energy storage systems are installed side by side in the horizontal direction according to the terrain of the vertical structure, enabling larger-scale energy storage. The vertical structure is, for example, an abandoned mine, a specific building, etc.

[0131] Example of the power generation of the vertical lifting gravity flow energy storage system described in this embodiment:

[0132] The energy storage device 300 has a reinforced concrete main body with a density of 2500 kg / m 3 . It has a cuboid shape with a length of 2.0 meters × a width of 0.60 meters × a height of 2.00 meters and weighs 6.0 tons. Assuming a vertical lift of 148 meters, lifting a single energy storage device 300 from the lower storage yard (i.e., low altitude) to the upper storage yard (i.e., high altitude), the stored energy E = mgh = 6.0×10 3 kg × 9.8 m / s 2 × 148 m = 9,702,400 J ≈ 2.4 kWh. Referring to the operating speeds of equipment such as mine hoists, cranes, and elevators, if the speed is 8 m / s, it can run 28.8 kilometers per hour. Assuming the energy storage devices 300 are arranged at an interval of 15 meters, 1920 energy storage devices 300 can be transported to the upper storage yard per hour, and the energy stored per hour is 1920 × 2.4 kWh / device = 4608 kW·h ≈ 4.6 MWh. To improve the power generation capacity, multiple systems can be arranged side by side in multiple rows on the terrain; or the speed of the lifting cable 120 can be increased or the spacing between the energy storage devices 300 can be reduced to expand the energy storage scale.

[0133] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vertical lifting gravity flow energy storage system, characterized in that: It comprises a guide device (110), a carrying rope (120), a first steering structure (130), a second steering structure (140), a carrying device (200), an energy storage device (300), a driving device (400) and a power generation device (500); The transport rope (120) circulates between the first steering structure (130) and the second steering structure (140), and a plurality of the transport devices (200) are fixedly connected to the transport rope (120); wherein the second steering structure (140) is located above the first steering structure (130); The guide device (110) is annular and slidably connected to the carrier device (200); The energy storage device (300) is detachably connected to the carrier device (200); The driving device (400) is connected to the first steering structure (130) and / or the second steering structure (140) so as to drive the transport rope (120) to operate in a first direction, thereby driving all the transport devices (200) to operate along the guide device (110), thereby successively vertically lifting the plurality of energy storage devices (300) to convert electrical energy into gravitational potential energy for storage; The power generation device (500) is connected to the first steering structure (130) and / or the second steering structure (140); a plurality of the carriers (200) loaded with the energy storage devices (300) travel along the guide device (110) to successively lower the plurality of energy storage devices (300) and form a continuous gravity flow, while driving the first steering structure (130) and the second steering structure (140) to operate along the carrier rope (120) in a second direction to drive the power generation device (500) to generate electricity, so as to convert the continuous gravity flow into a continuous energy flow, thereby achieving continuous discharge; wherein the first direction is opposite to the second direction.

2. The vertical lifting gravity flow energy storage system according to claim 1 is characterized in that: The carrier (200) comprises a carrier frame (210), a connecting frame (220), a suspension device (230) and a rope connection structure (240); the carrier (200) has a first direction, a second direction and a third direction which intersect in pairs; The transport rack (210) comprises at least two transport small racks; all the transport small racks are sequentially arranged at intervals along the first direction; each of the transport small racks is connected to at least two rope connection structures (240) sequentially arranged along the second direction; the rope connection structure (240) is fixedly connected to the transport rope (120); Along the third direction, the connecting frame (220) and the carrying rope (120) are respectively located on both sides of the carrying frame (210); each of the small carrying frames is respectively connected to the connecting frame (220), and the suspension device (230) is connected to the connecting frame (220); The energy storage device (300) is detachably connected to the suspension device (230).

3. The vertical lifting gravity flow energy storage system according to claim 2 is characterized in that: The number of the transport racks is two, namely a first transport rack (211) and a second transport rack (212); The number of the rope connection structures (240) on the first transport frame (211), the rope connection structures (240) on the second transport frame (212), and the transport ropes (120) is the same; and along the first direction, the rope connection structures (240) on the first transport frame (211) and the rope connection structures (240) on the second transport frame (212) are respectively fixedly connected to the corresponding transport ropes (120); The connecting frame (220) comprises a support rod (221), a pull rod (222) and a connecting shaft (223); one end of the support rod (221) is pin-connected to one end of the pull rod (222), the other end of the pull rod (222) is pivotally connected to the first transport frame (211), and the other end of the support rod (221) is pivotally connected to the second transport frame (212), so that the support rod (221) and the pull rod (222) form a corner rod structure; the number of the corner rod structures is multiple, and the multiple corner rod structures are sequentially spaced apart along the second direction; the connecting shaft (223) is connected to all the corner rod structures; The suspension device (230) is rotatably connected to the connection shaft (223) and is used to suspend and connect the energy storage device (300).

4. The vertical lifting gravity flow energy storage system according to claim 3 is characterized in that: The pull rod (222) comprises two pull rod parts; the two pull rod parts have the same length and are hinged to each other; a plane formed by the first transport frame (211) and the second transport frame (212) can form a right triangle with the support rod (221) and the pull rod (222) in the first direction; The length of the support rod (221) is a, the angle between the pull rod (222) and the support rod (221) is α, the length of the pull rod (222) is a / cosα, and the vertical distance between the centers of the first transport rack (211) and the second transport rack (212) is y: y=a·tanα; The radii of the first steering structure (130) and the second steering structure (140) are both r, and when the carrier (200) runs to the first steering structure (130) or the second steering structure (140), the central angle corresponding to y is 2β, and the angle between the pull rod portion and the tangent line of the outer circumferential surface of the first steering structure (130) or the second steering structure (140) is θ; then ； If 90°<θ, then y is greater than 。 5. The vertical lifting gravity flow energy storage system according to claim 3 is characterized in that: The pull rod (222) comprises at least two pull rod parts, and the plurality of pull rod parts are hinged in sequence; the hinge axes of all the pull rod parts, the pin-jointed axes of the support rod (221) and the pull rod (222), the pivot axis of the pull rod (222) and the first transport frame (211), and the pivot axis of the support rod (221) and the second transport frame (212) are parallel; The connecting shaft (223) is a pin-connected shaft between the support rod (221) and the pull rod (222).

6. The vertical lifting gravity flow energy storage system according to claim 5 is characterized in that: The pull rod (222) comprises two pull rod parts; When the first small transport rack (211) and the second small transport rack (212) are parallel, the plane where the first small transport rack (211) and the second small transport rack (212) are located is perpendicular to the support rod (221).

7. The vertical lifting gravity flow energy storage system according to claim 2, characterized in that: Along the second direction, two ends of the transport frame are provided with guide rail grooves (213) that cooperate with the guide device (110), and the guide rail groove (213) is open at both ends along the first direction; in the second direction, the cross-section of the guide rail groove (213) is T-shaped, and the third opening of the guide rail groove (213) is located on a side away from the center of the transport frame; a portion of the guide device (110) extends out of the third opening of the guide rail groove (213) and is used to be fixed to the building.

8. The vertical lifting gravity flow energy storage system according to claim 7, characterized in that: The guide device (110) adopts a T-shaped profile; The two ends of the transport frame are fixedly connected to guide sleeves (214), and the guide rail groove (213) is arranged in the guide sleeve (214); the third opening of the guide rail groove (213) is arranged at the end of the guide sleeve (214) away from the transport frame.

9. The vertical lifting gravity flow energy storage system according to claim 2, characterized in that: The rope connection structure (240) comprises a rope clamping member (241), a locking member (242) and a fastener (243); the rope clamping member (241) comprises a fixedly connected end portion and a screw rod portion; At least one of the end of the cable clamping member (241) and the locking member (242) has a cable groove (2411) for accommodating the carrying cable (120); The screw portion of the cable clamping member (241) is sleeved with the locking member (242), the fastener (243), the small transport frame and the fastener (243) in sequence; the fastener (243) between the locking member (242) and the small transport frame is used to enable the locking member (242) and the cable clamping member (241) to clamp and fix the transport rope (120); the fastener (243) on the side of the small transport frame away from the locking member (242) is used to fasten the rope connection structure (240) to the small transport frame.

10. The vertical lifting gravity flow energy storage system according to claim 9, characterized in that: The end of the cable clamp (241) comprises a straight portion (2412) and a transition portion (2413); Along the axial direction of the cable groove (2411), both ends of the straight portion (2412) are fixedly connected to the transition portion (2413); the outer diameter of the transition portion (2413) gradually decreases, the large diameter end of the transition portion (2413) is connected to the straight portion (2412), and the outer diameter of the straight portion (2412) is a constant value; The cable clamping member (241) and the locking member (242) are both provided with a cable groove (2411); The cable groove (2411) passes through the straight portion (2412) and the transition portion (2413).

11. The vertical lifting gravity flow energy storage system according to claim 1, characterized in that: The axial direction of the first steering structure (130) and the axial direction of the second steering structure (140) are both parallel to the horizontal direction; The first steering structure (130) and the second steering structure (140) are steering wheels or reels (160) respectively; When the first steering structure (130) or the second steering structure (140) is a steering wheel, the number of the steering wheels of the first steering structure (130) or the second steering structure (140) is consistent with the number of the carrying ropes (120), and the steering wheels are provided with wheel grooves that match the carrying ropes (120); all the steering wheels of the first steering structure (130) or the second steering structure (140) are connected via a coupling, and the driving device (400) or the power generation device (500) is respectively connected to the coupling; When the first steering structure (130) or the second steering structure (140) is a drum (160), the drum (160) is provided with wheel grooves having the same number as that of all the carrying ropes (120), and the driving device (400) or the power generation device (500) is respectively connected to the drum shaft of the drum (160); The first steering structure (130) and the second steering structure (140) are both connected to a support; The driving device (400) and the power generation device (500) are electric generators, or the driving device (400) and the power generation device (500) are independent of each other.

12. The vertical lifting gravity flow energy storage system according to claim 1, characterized in that: The number of the guide devices (110) is two, and the number of the transport ropes (120) is multiple; all the transport ropes (120) are located between the two guide devices (110); The transport rope (120) and the energy storage device (300) are located on both sides of the transport device (200); A rolling body is provided between the guide device (110) and the carrier device (200); the rolling body is located inside the carrier device (200), and the rolling body is located on at least one corresponding matching surface of the carrier device (200) and the guide device (110); The first steering structure (130) is located at a low altitude position, and the second steering structure (140) is located at a high altitude position opposite to the low altitude position; the vertical lifting gravity flow energy storage system further comprises a transfer device (600); the transfer device (600) is provided at both the low altitude position and the high altitude position; and the energy storage device (300) is transported back and forth between a storage yard and the carrier (200) via the transfer device (600).

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