Bearing cable type gravity flow energy storage system

Abstract

The utility model discloses a bearing cable type gravity flow energy storage system, and relates to the technical field of gravity energy storage. Comprising a first steering structure, a second steering structure, a carrying device, an energy storage device, a driving device, a power generation device, a stacking and transporting field, at least one pair of bearing cables used for bearing the carrying device and at least one pair of pulling cables used for pulling the carrying device. The energy storage device is detachably connected to the carrying device; the driving device drives the traction cable to operate in the first direction so as to convey the multiple energy storage devices to a high altitude position, and therefore electric energy is converted into gravitational potential energy to be stored. A plurality of carrying devices loaded with energy storage devices walk along the bearing cable and are conveyed to a low altitude position successively to form a continuous gravity flow so as to drive the power generation device to discharge continuously. The utility model provides a bearing cable type gravity flow energy storage system, and aims to solve the technical problem of discontinuous charging and discharging caused by intermittent load generated by lifting energy storage blocks one by one in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of gravity energy storage, and more specifically, to a load-bearing cable type gravity flow energy storage system. Background Art

[0002] New power generation technologies such as wind power and photovoltaic power have emerged as the times require and their proportion in energy utilization has gradually increased. However, renewable energy dominated by wind power and photovoltaic power has the characteristics of randomness, volatility, and intermittency, and is an unstable energy source that cannot fully meet the social electricity demand. Therefore, it is necessary to use an energy storage system to regulate the demand for power generation and power consumption. Currently, there are various forms of energy storage such as gravity energy storage, electrochemical energy storage, chemical energy storage, and thermal energy storage. However, electrochemical energy storage, chemical energy storage, and thermal energy storage methods have problems of energy loss, are not suitable for long-term energy storage, and generally have safety problems; pumped storage and flywheel energy storage in gravity energy storage have high requirements for terrain and space and are difficult to be widely deployed. Therefore, gravity energy storage based on height difference for power generation has gradually attracted attention. Existing gravity energy storage systems use large loads to rise and fall successively for charging and discharging. However, the intermittent loads generated by lifting and lowering energy storage blocks one by one have the technical problem of discontinuous charging and discharging. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a load-bearing cable type gravity flow energy storage system to solve, to a certain extent, the technical problem of discontinuous charging and discharging caused by intermittent loads generated by lifting and lowering energy storage blocks one by one in the existing technology.

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

[0005] A load-bearing cable type gravity flow energy storage system includes a first steering structure, a second steering structure, a carrier device, an energy storage device, a driving device, a power generation device, and a stacking yard, and further includes at least a pair of load-bearing cables for carrying the carrier device and at least a pair of towing cables for towing the carrier device; the energy storage device is detachably connected to the carrier device;

[0006] The towing cable circulates between the first steering structure and the second steering structure; wherein 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; stacking yards for storing the energy storage device are provided at both the low altitude and the high altitude;

[0007] The driving device is connected to the first steering structure and / or the second steering structure to be able to drive the towing cable to operate in a first direction; all the carrier devices travel under the traction of the towing cable to be able to successively transport a plurality of the energy storage devices along the load-bearing cable to the high altitude, thereby converting electric energy into gravitational potential energy for storage;

[0008] The power generation device is connected to the first steering structure and / or the second steering structure; a plurality of the carrier devices loaded with the energy storage devices travel along the load-carrying cable to successively transport the plurality of energy storage devices to a low altitude position and form a continuous gravity flow, while driving the first steering structure and the second steering structure to rotate along the second direction with the traction cable, so as to drive the power generation device to generate electricity, and 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.

[0009] In any of the above technical solutions, optionally, the axes of both the first steering structure and the second steering structure are parallel to the horizontal direction.

[0010] In any of the above technical solutions, optionally, the first steering structure and the second steering structure are respectively a steering wheel or a winding drum;

[0011] When the first steering structure or the second steering structure is a steering wheel, the number of the steering wheels located at the low altitude position or the high altitude position is the same as the number of the traction cables, and the steering wheel is provided with a wheel groove for cooperating with the traction cable; all the steering wheels located at the low altitude position or the high altitude position are connected by a coupling, and the driving device or the power generation device is respectively connected to the coupling;

[0012] When the first steering structure or the second steering structure is a winding drum, the winding drum is provided with wheel grooves with the same number as all the traction cables, and the driving device or the power generation device is respectively connected to the barrel shaft of the winding drum;

[0013] Both the first steering structure and the second steering structure are connected to a bracket;

[0014] 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.

[0015] In any of the above technical solutions, optionally, each traction cable is annular; the traction cable includes a first traction cable part, a second traction cable part and two traction cooperation parts; the two traction cooperation parts cooperate with the first steering structure and the second steering structure respectively; both ends of the first traction cable part and both ends of the second traction cable part are respectively connected to the traction cooperation parts and form an annular shape;

[0016] Both the first traction cable part and the second traction cable part include two traction guiding segments and one traction inclined segment; the traction inclined segment is connected between the two traction guiding segments;

[0017] The cable - supported gravity - flow energy storage system further includes a traction and guiding device; the traction and guiding device is provided at both the low - altitude position and the high - altitude position;

[0018] The traction inclined section is located between the traction and guiding device at the low - altitude position and the traction and guiding device at the high - altitude position.

[0019] In any of the above - mentioned technical solutions, optionally, the load - bearing cable includes two load - bearing fixed sections, two load - bearing guiding sections, and one load - bearing inclined section; the load - bearing guiding sections are connected between the load - bearing fixed sections and the load - bearing inclined section;

[0020] The cable - supported gravity - flow energy storage system further includes a load - bearing fixing device, a load - bearing supporting device, and a load - bearing guiding device; the load - bearing fixing device, the load - bearing supporting device, and the load - bearing guiding device are provided at both the low - altitude position and the high - altitude position;

[0021] The end of each load - bearing cable sequentially passes through the load - bearing guiding device, the load - bearing supporting device, and is fixedly connected to the load - bearing fixing device; the load - bearing fixed section is located between the load - bearing fixing device and the load - bearing supporting device, the load - bearing guiding section is located between the load - bearing supporting device and the load - bearing guiding device, and the load - bearing inclined section is located between the load - bearing guiding device at the low - altitude position and the load - bearing guiding device at the high - altitude position;

[0022] The load - bearing fixing device adopts an anchoring method;

[0023] The traction guiding section is parallel to the horizontal direction; the load - bearing guiding section is parallel to the horizontal direction;

[0024] The first traction cable part is connected to the top of the first steering structure, and the second traction cable part is connected to the bottom of the first steering structure; the position of the traction guiding section of the first traction cable part corresponds to the position of the load - bearing guiding section, and the position of the traction inclined section of the first traction cable part corresponds to the position of the load - bearing inclined section.

[0025] In any of the above - mentioned technical solutions, optionally, the carrier device includes a carrier frame, a connecting frame, a walking wheel set, and a rope connecting structure;

[0026] When both the first steering structure and the second steering structure are steering wheels, the connecting frame is a suspension frame, and the suspension frame is rotatably connected to the carrier frame; when at least one of the first steering structure and the second steering structure is a drum, the connecting frame is a support frame, and the support frame is fixedly connected to the carrier frame;

[0027] The energy storage device is detachably connected to the connecting frame;

[0028] At least one pair of the walking wheel sets is arranged on both sides of the carrier frame; the walking wheel sets are configured to be able to walk on the load-bearing cable; the number of the walking wheel sets is the same as the number of the load-bearing cables;

[0029] At least one pair of the rope connection structures is rotatably connected to both sides of the carrier frame; the rope connection structure is fixedly connected to the towing cable, and there is an included angle between the rotation axis of the rope connection structure and the extending direction of the towing cable.

[0030] In any of the above technical solutions, optionally, each of the towing cables is in a ring shape;

[0031] The rope connection structure includes a rope connection body and a clamping jaw; the clamping jaw is fixedly connected to the end of the rope connection body, and the jaws of the clamping jaw face the center line of the towing cable;

[0032] The clamping jaw is fixedly connected to the towing cable;

[0033] A carrier bearing is connected between the rope connection body and the carrier frame.

[0034] In any of the above technical solutions, optionally, the walking wheel set includes at least one wheel assembly; when the number of the wheel assemblies is multiple, the multiple wheel assemblies are arranged in sequence along the extending direction of the load-bearing cable;

[0035] The wheel assembly includes a walking wheel and a wheel connecting piece; in the same wheel assembly, the number of the walking wheels is at least two, and all the walking wheels are rotatably connected to the wheel connecting piece in sequence along the extending direction of the load-bearing cable; the wheel connecting piece is pivotally connected to the carrier frame.

[0036] In any of the above technical solutions, optionally, the wheel assembly further includes a pivot shaft and a wheel shaft parallel to the pivot shaft;

[0037] In the same wheel assembly, the number of the wheel connecting pieces is two, the walking wheel is clamped between the two wheel connecting pieces in a third direction, the wheel shaft passes through the two wheel connecting pieces and the walking wheel, and the walking wheel is configured to be able to rotate around the wheel shaft; the pivot shaft passes through the two wheel connecting pieces and is connected to the carrier frame, and the two wheel connecting pieces are configured to be able to swing around the pivot shaft, the pivot shaft is parallel to the third direction and has an included angle with the extending direction of the load-bearing cable.

[0038] In any of the above technical solutions, optionally, the carrier frame includes a carrier frame body and a wheel set mounting part; the paired wheel set mounting parts are symmetrically connected to both ends of the carrier frame body; the connecting frame is connected to the carrier frame body, and the walking wheel set is connected to the wheel set mounting part;

[0039] At least two of the walking wheel sets are arranged on one side of the carrier frame, and two of the walking wheel sets are arranged on both sides of the wheel set mounting part, and the pivot shafts corresponding to the two walking wheel sets are the same pivot shaft; the pivot shaft passes through the wheel set mounting part and is connected to the corresponding wheel connecting piece.

[0040] In any of the above technical solutions, optionally, the paired walking wheel sets are symmetrically arranged on the carrier frame; the paired load-bearing cables are symmetrically arranged on both sides of the conveying device; the paired towing cables are symmetrically arranged on both sides of the conveying device;

[0041] The towing cable is located between the paired load-bearing cables; the load-bearing cable is located above the towing cable;

[0042] The connecting frame includes at least two connecting rod parts; the connecting rod parts are connected between the carrier frame and the energy storage device.

[0043] In any of the above technical solutions, optionally, both the load-bearing cable and the towing cable are connected with tensioning devices; the tensioning devices include one or more of a weight type structure, a hydraulic type structure, and a lead screw type structure;

[0044] The load-bearing cable type gravity flow energy storage system further includes a transfer device; the transfer device is provided at both the low altitude position and the high altitude position; the energy storage device is reciprocally transported between the stacking yard and the conveying device through the transfer device.

[0045] The beneficial effects of the present utility model mainly lie in:

[0046] The load-bearing cable type gravity flow energy storage system provided by the present utility model drives the energy storage device to move through the paired towing cables, and the paired load-bearing cables bear the load of the energy storage device. Compared with using a single cable for both bearing and towing, its safety and stability are higher; by circulating the towing cable between the first steering structure and the second steering structure, the energy storage device can be continuously transported through the conveying device, which not only improves the system transportation capacity but also provides a continuous gravity flow, and the continuous gravity flow can be converted into a continuous energy flow through a power generation device, thereby realizing continuous discharge.

[0047] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given below in conjunction with the accompanying drawings for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. 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, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0049] Figure 1 The first structural schematic diagram of the cable-supported gravity flow energy storage system provided by the embodiment of the present utility model;

[0050] Figure 2 and Figure 3 is Figure 1 The partial enlarged view of the cable-supported gravity flow energy storage system shown;

[0051] Figure 4 is Figure 1 The structural schematic diagram of the second steering structure, driving device and power generation device shown;

[0052] Figure 5 is Figure 1 The structural schematic diagram of the carrier device and energy storage device shown;

[0053] Figure 6 The second structural schematic diagram of the cable-supported gravity flow energy storage system provided by the embodiment of the present utility model;

[0054] Figure 7 is Figure 6 The partial enlarged view of the cable-supported gravity flow energy storage system shown;

[0055] Figure 8 is Figure 6 The structural schematic diagram of the carrier device and energy storage device shown;

[0056] Figure 9 is Figure 8 The partial enlarged view of the carrier device shown;

[0057] Figure 10 The structural schematic diagram of the rope connection structure provided by the embodiment of the present utility model;

[0058] Figure 11 The third structural schematic diagram of the cable-supported gravity flow energy storage system provided by the embodiment of the present utility model;

[0059] Figure 12 and Figure 13 is Figure 11 The partial enlarged view of the cable-supported gravity flow energy storage system shown;

[0060] Figure 14 isFigure 11 Schematic diagram of the structure of the second steering structure, driving device and power generation device shown;

[0061] Figure 15 For Figure 11 Schematic diagram of the structure of the carrier device and energy storage device shown;

[0062] Figure 16 This is the fourth schematic diagram of the cable-supported gravity flow energy storage system provided by the embodiment of the present invention;

[0063] Figure 17 For Figure 16 Partial enlarged view of the cable-supported gravity flow energy storage system shown;

[0064] Figure 18 For Figure 16 Schematic diagram of the structure of the carrier device and energy storage device shown;

[0065] Figure 19 For Figure 18 Enlarged view of area A of the carrier device and energy storage device shown.

[0066] Icon: 110 - Cable support; 111 - Cable support fixed section; 112 - Cable support guiding section; 113 - Cable support inclined section; 114 - Cable support fixing device; 115 - Cable support supporting device; 120 - Towing cable; 122 - Towing cable guiding section; 123 - Towing cable inclined section; 126 - Towing cable guiding device; 130 - First steering structure; 140 - Second steering structure; 150 - Steering wheel; 160 - Drum;

[0067] 200 - Carrier device; 210 - Carrier frame; 211 - Carrier frame body; 212 - Wheel group installation part; 220 - Connecting frame; 221 - Suspension frame; 222 - Support frame; 230 - Traveling wheel group; 231 - Traveling wheel; 232 - Wheel connecting piece; 233 - Pivoting shaft; 234 - Wheel shaft; 240 - Rope connection structure; 241 - Rope connection body; 242 - Claw; 243 - Jaw; 244 - Carrier bearing;

[0068] 300 - Energy storage device; 400 - Driving device; 500 - Power generation device. Detailed implementation manners

[0069] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0070] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0071] It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings.

[0072] In the description of the present invention, 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 product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0073] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may 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 may be slightly inclined.

[0074] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0076] Embodiment

[0077] This embodiment provides a cable-supported gravity flow energy storage system; please refer to Figures 1 - 19 , Figures 1 - 5, Figures 11 - 15 The shown load-carrying cable type gravity flow energy storage system shows a pair of load-carrying cables and a pair of towing cables. Figures 6 - 9 , Figures 16 - 19 The shown load-carrying cable type gravity flow energy storage system shows two pairs of load-carrying cables and a pair of towing cables. Figures 1 - 9 The shown load-carrying cable type gravity flow energy storage system shows that both the first steering structure 130 and the second steering structure 140 are steering wheels 150. Figures 11 - 19 The shown load-carrying cable type gravity flow energy storage system shows that both the first steering structure 130 and the second steering structure 140 are drums 160.

[0078] The load-carrying cable type gravity flow energy storage system provided in this embodiment can be used to store electric energy, especially the electric energy generated by power generation technologies such as wind power and photovoltaic power, and can also be used to generate continuous discharge.

[0079] See Figures 1 - 19 As shown, the load-carrying cable type gravity flow energy storage system includes 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, and also includes at least a pair of load-carrying cables 110 for carrying the carrier device 200 and at least a pair of towing cables 120 for towing the carrier device 200; the energy storage device 300 is detachably connected to the carrier device 200; a plurality of carrier devices 200 are connected to the towing cable 120 along the running direction of the towing cable 120. Optionally, each of the carrier devices 200 is located between the paired load-carrying cables and the paired towing cables. In one embodiment, the load-carrying cable type gravity flow energy storage system further includes a stacking yard; the stacking yard is used to store the energy storage device 300. In one embodiment, the load-carrying cable type gravity flow energy storage system further includes a transfer device; the energy storage device 300 is reciprocally transported between the stacking yard and the carrier device 200 through the transfer device to achieve charging energy storage and discharging.

[0080] The towing cable 120 circulates and runs between the first steering structure 130 and the second steering structure 140; the first steering structure 130 is located at a low altitude; the second steering structure 140 is located at a high altitude opposite to the low altitude; wherein, the altitude of the high altitude is higher than the altitude of the low altitude. Optionally, transfer devices are provided at both the low altitude and the high altitude. Optionally, stacking yards are provided at both the low altitude and the high altitude.

[0081] The driving device 400 is connected to the first steering structure 130 and / or the second steering structure 140 so as to be able to drive the traction cable 120 to operate in the first direction, that is, the driving device 400 can drive the first steering structure 130 and the second steering structure 140 to rotate around the first direction; all the carrying devices 200 travel under the traction of the traction cable 120 so as to be able to successively transport a plurality of energy storage devices 300 along the load-bearing cable 110 to a high altitude position, thereby converting electrical energy into gravitational potential energy for storage and realizing the charging function. Among them, the driving device 400 is connected to the first steering structure 130 and / or the second steering structure 140, specifically, the driving device 400 is connected to the first steering structure 130, or the driving device 400 is connected to the second steering structure 140, or the driving device 400 is connected to both the first steering structure 130 and the second steering structure 140.

[0082] The power generation device 500 is connected to the first steering structure 130 and / or the second steering structure 140; a plurality of carrying devices 200 loaded with energy storage devices 300 travel along the load-bearing cable 110 to successively transport a plurality of energy storage devices 300 to a low altitude position and form a continuous gravity flow, while driving the first steering structure 130 and the second steering structure 140 to operate along the second direction with the traction cable 120, so as to drive the power generation device 500 to generate electricity, so as to convert the continuous gravity flow into a continuous energy flow, thereby realizing continuous discharge; among them, 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 traction cable 120 through the steering structure to drive the carrying device 200 to travel along the load-bearing cable 110, and transport the energy storage device 300 up and down, so that the gravity flow formed by the successive on-line travel of several energy storage devices 300 is converted into a continuous energy flow, thereby realizing continuous charge and discharge.

[0083] Optionally, both the first steering structure 130 and the second steering structure 140 are connected to the bracket. For example, the bracket is connected to the ground, and both the first steering structure 130 and the second steering structure 140 are supported by the bracket.

[0084] In the load-bearing cable type gravity flow energy storage system described in this embodiment, the paired traction cables 120 drive the energy storage device 300 to move, and the paired load-bearing cables 110 bear the load of the energy storage device 300. Compared with using a single cable for both bearing and traction, its safety and stability are higher; by circulating and operating between the first steering structure 130 and the second steering structure 140 through the traction cable 120, the energy storage device 300 can be successively transported by the carrying device 200, which not only improves the system transport capacity, but also provides a continuous gravity flow, and the continuous gravity flow can be converted into a continuous energy flow by the power generation device 500, thereby realizing continuous discharge.

[0085] See Figures 1 - 17As shown in the figure, in an alternative solution of this embodiment, the axial directions of the first steering structure 130 and the second steering structure 140 are both parallel to the horizontal direction; that is, both the first steering structure 130 and the second steering structure 140 rotate around an axis parallel to the horizontal direction. Compared with the steering structure that rotates around an axis parallel to the vertical direction, the rotation mode of the first steering structure 130 and the second steering structure 140 in this embodiment requires relatively less ground space and has simpler terrain requirements, facilitating installation in more slope sections. At the same time, the smaller installation space facilitates the installation of multiple systems simultaneously, which can improve the system's transportation capacity and increase the high-power storage / discharge of electric energy.

[0086] In one embodiment, the first steering structure 130 and the second steering structure 140 are respectively a steering wheel 150 or a drum 160, that is, the first steering structure 130 is a steering wheel 150 or a drum 160, and the second steering structure 140 is a steering wheel 150 or a drum 160.

[0087] Optionally, as Figures 1 - 4 、 Figure 7 shown, when the first steering structure 130 or the second steering structure 140 is a steering wheel 150, the number of steering wheels 150 located at a low altitude or a high altitude is the same as the number of traction cables 120, that is, the number of the first steering structure 130, the number of the second steering structure 140, and the number of traction cables 120 are the same. For example, when the number of traction cables 120 is a pair, the number of the first steering structure 130 and the number of the second steering structure 140 are each two.

[0088] The steering wheel 150 is provided with a wheel groove for cooperating with the traction cable 120; all the steering wheels 150 located at a low altitude or a high altitude 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 all the steering wheels 150 located at a low altitude or all the steering wheels 150 located at a high altitude through the coupling, so that all the steering wheels 150 located at a low altitude rotate synchronously or all the steering wheels 150 located at a high altitude rotate synchronously.

[0089] Optionally, as Figures 11 - 14 、 Figure 17 shown, when the first steering structure 130 or the second steering structure 140 is a drum 160, the drum 160 is provided with wheel grooves with the same number as all the traction cables 120, and the driving device 400 or the power generation device 500 is respectively connected to the barrel shaft of the drum 160. That is, a drum 160 is provided at a low altitude for rotatably connecting with all the traction cables 120; a drum 160 is also provided at a high altitude for rotatably connecting with all the traction cables 120.

[0090] In this embodiment, the first steering structure 130 or the second steering structure 140 is provided with a wheel groove to increase the friction between the traction cable 120 and the first steering structure 130 and the second steering structure 140, and also prevent the traction cable 120 from detaching from the first steering structure 130 and the second steering structure 140.

[0091] 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 can be 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 located at a high altitude, the load during the energy storage process can be reduced; when located 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.

[0092] 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 can be arranged at both low and high altitudes to connect the first steering structure 130 and the second steering structure 140. When the power generation device 500 is located at a high altitude, the load during the energy storage process can be reduced; when located 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.

[0093] 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.

[0094] See Figures 1 - 7 、 Figures 11 - 17 As shown, in an alternative solution of this embodiment, each traction cable 120 is in a ring shape; the traction cable 120 includes a first traction cable portion, a second traction cable portion, and two traction cooperation portions; the two traction cooperation portions cooperate with the first steering structure 130 and the second steering structure 140 respectively; the two ends of the first traction cable portion and the two ends of the second traction cable portion are respectively connected to the traction cooperation portions and form a ring; that is, the first traction cable portion, the traction cooperation portion, the second traction cable portion, and the traction cooperation portion are connected end to end to form a ring.

[0095] Both the first traction cable section and the second traction cable section include two traction guiding sections 122 and one traction inclined section 123; the traction inclined section 123 is connected between the two traction guiding sections 122.

[0096] The load-bearing cable type gravity flow energy storage system further includes a traction guiding device 126; the traction guiding device 126 is provided at both the low altitude position and the high altitude position; the traction inclined section 123 is located between the traction guiding device 126 at the low altitude position and the traction guiding device 126 at the high altitude position. The traction inclined section 123 is, for example, located on the hillside between the low altitude position and the high altitude position. Through the traction guiding device 126, it is convenient to guide the traction cable 120, and the traction cable 120 can be guided from an inclined state to a horizontal state, and the traction cable 120 can also be guided from a horizontal state to an inclined state. Through the two traction guiding sections 122, it helps the transfer of the energy storage device 300.

[0097] See Figures 1 - 7 、 Figures 11 - 17 As shown in, in an alternative solution of this embodiment, the load-bearing cable 110 includes two load-bearing fixed sections 111, two load-bearing guiding sections 112 and one load-bearing inclined section 113; the load-bearing guiding section 112 is connected between the load-bearing fixed section 111 and the load-bearing inclined section 113. That is, the load-bearing cable 110 includes a load-bearing fixed section 111, a load-bearing guiding section 112, a load-bearing inclined section 113, a load-bearing guiding section 112 and a load-bearing fixed section 111 connected in sequence. In this embodiment, the load-bearing cable 110 is in a broken line shape.

[0098] The load-bearing cable type gravity flow energy storage system further includes a load-bearing fixing device 114, a load-bearing supporting device 115 and a load-bearing guiding device (the load-bearing guiding device is not shown in the figure for clearer display of other structures); the load-bearing fixing device 114, the load-bearing supporting device 115 and the load-bearing guiding device are provided at both the low altitude position and the high altitude position.

[0099] The end of each load-bearing cable 110 sequentially passes through the load-bearing guiding device, the load-bearing supporting device 115 and is fixedly connected to the load-bearing fixing device 114; the load-bearing fixed section 111 is located between the load-bearing fixing device 114 and the load-bearing supporting device 115, the load-bearing guiding section 112 is located between the load-bearing supporting device 115 and the load-bearing guiding device, and the load-bearing inclined section 113 is located between the load-bearing guiding device at the low altitude position and the load-bearing guiding device at the high altitude position; through the two load-bearing guiding sections 112, it helps the transfer of the energy storage device 300 at the low altitude position and the high altitude position, and through the load-bearing fixed section 111, the end of the load-bearing cable 110 is fixed.

[0100] Optionally, the load-bearing fixing device 114 adopts an anchoring method or other fixing methods.

[0101] Optionally, the traction guiding section 122 is parallel to the horizontal direction; by making the traction guiding section 122 parallel to the horizontal direction, it is convenient for the transportation of the energy storage device 300.

[0102] Optionally, the carrying guiding section 112 is parallel to the horizontal direction; by making the carrying guiding section 112 parallel to the horizontal direction, it is convenient for the transportation of the energy storage device 300.

[0103] Optionally, the first traction cable part is connected to the top of the first steering structure 130, and the second traction cable part is connected to the bottom of the first steering structure 130, that is, the first traction cable part is connected to the top of the second steering structure 140, and the second traction cable part is connected to the bottom of the second steering structure 140. The position of the traction guiding section 122 of the first traction cable part corresponds to the position of the carrying guiding section 112, and the position of the traction inclined section 123 of the first traction cable part corresponds to the position of the carrying inclined section 113. Adopting this design helps to improve the stability and accuracy of the walking of the carrying device 200.

[0104] See Figure 5 、 Figure 8 、 Figure 15 and Figure 18 As shown in, in the optional solution of this embodiment, the carrying device 200 includes a carrying frame 210, a connecting frame 220, a walking wheel set 230, and a rope connecting structure 240.

[0105] As Figure 5 and Figure 8 shown, when both the first steering structure 130 and the second steering structure 140 are steering wheels 150, the connecting frame 220 is a suspension frame 221, and the suspension frame 221 is rotatably connected to the carrying frame 210; for example, the suspension frame 221 can rotate 360 degrees on the carrying frame 210. By rotatably connecting the suspension frame 221 to the carrying frame 210, the energy storage device 300 connected to the suspension frame 221 can always be in a suspended state.

[0106] As Figure 15 and Figure 18As shown, when at least one of the first steering structure 130 and the second steering structure 140 is the reel 160, the connecting frame 220 is the support frame 222, and the support frame 222 is fixedly connected to the carrier frame 210. When the carrier device 200 travels along the traction cable 120, when the carrier device 200 travels on the first traction cable portion (the first traction cable portion is connected to the top of the first steering structure 130, and it can be understood that the first traction cable portion is the upward travel route of the carrier device 200), the energy storage device 300 is connected through the support frame 222 and is located above the carrier frame 210; when the carrier device 200 travels on the second traction cable portion (the second traction cable portion is connected to the bottom of the first steering structure 130, and it can be understood that the second traction cable portion is the downward travel route of the carrier device 200), the energy storage device 300 has been unloaded from the support frame 222, and the support frame 222 is located below the carrier frame 210.

[0107] In one embodiment, the energy storage device 300 is detachably connected to the connecting frame 220, that is, the energy storage device 300 is detachably connected to the suspension frame 221, or the energy storage device 300 is detachably connected to the support frame 222.

[0108] In one embodiment, at least one pair of traveling wheel sets 230 are arranged on both sides of the carrier frame 210; the traveling wheel sets 230 are configured to be able to travel on the load-bearing cable 110; the number of the traveling wheel sets 230 is the same as the number of the load-bearing cables 110.

[0109] In one embodiment, at least one pair of cable connection structures 240 are rotatably connected to both sides of the carrier frame 210; the cable connection structures 240 are fixedly connected to the traction cable 120, and there is an included angle between the rotation axis of the cable connection structures 240 and the extension direction of the traction cable 120. Optionally, the rotation axis of the cable connection structures 240 is perpendicular to the extension direction of the traction cable 120. By rotatably connecting the cable connection structures 240 to the carrier frame 210, it is convenient for the carrier device 200 to travel along the annular traction cable 120. By using the paired cable connection structures 240 to connect the carrier frame 210, the stability of the carrier device 200 during travel is improved. In this embodiment, the number of pairs of the cable connection structures 240 can be selected according to factors such as the material and connection strength of the cable connection structures 240.

[0110] See Figure 9 、 Figure 10 and Figure 19As shown, in an alternative solution of this embodiment, each towing cable 120 is annular. The cable connection structure 240 can be in various forms, such as a gripper type, a buckle, etc. For example, the cable connection structure 240 includes a cable connection body 241 and a gripper 242; the gripper 242 is fixedly connected to the end of the cable connection body 241, and the jaws 243 of the gripper 242 face the center line of the towing cable 120; by having the jaws 243 of the gripper 242 face the center line of the towing cable 120, it is convenient for the gripper 242 to move along with the towing cable 120. When the carrier device 200 rotates to the first steering structure 130 or the second steering structure 140, the rotational interference of the cable connection structure 240 at the first steering structure 130 or the second steering structure 140 is reduced, so that the cable connection structure 240 can smoothly pass through the first steering structure 130 or the second steering structure 140.

[0111] The gripper 242 is fixedly connected to the towing cable 120. A carrier bearing 244 is connected between the cable connection body 241 and the carrier frame 210. Through the carrier bearing 244, the friction between the cable connection body 241 and the carrier frame 210 is reduced, which helps the carrier device 200 to rotate at the first steering structure 130 or the second steering structure 140.

[0112] Optionally, the carrier bearing 244 is a sliding bearing. The sliding bearing has a high load-bearing capacity, which provides a guarantee for continuously transporting the energy storage device 300 in the cable-supported gravity flow energy storage system.

[0113] See Figures 1 - 19 As shown, in an alternative solution of this embodiment, the walking wheel set 230 includes at least one wheel assembly; when the number of wheel assemblies is multiple, the multiple wheel assemblies are arranged in sequence along the extension direction of the load-bearing cable 110; through the multiple wheel assemblies, it is convenient for the load-bearing cable 110 to better support the carrier device 200 and the energy storage device 300 through the walking wheel set 230.

[0114] The wheel assembly includes a walking wheel 231 and a wheel connecting piece 232; in the same wheel assembly, the number of walking wheels 231 is at least two, and all the walking wheels 231 are rotatably connected to the wheel connecting piece 232 in sequence along the extension direction of the load-bearing cable 110; the wheel connecting piece 232 is pivotally connected to the carrier frame 210. Through the walking wheel 231 and the wheel connecting piece 232, the load-bearing capacity of the walking wheel set 230 and the stability during walking are further improved.

[0115] Optionally, to further improve the load-bearing capacity and stability of the walking wheel set 230 during walking, the wheel assembly further includes a pivot shaft 233 and a wheel axle 234 parallel to the pivot shaft 233; in the same wheel assembly, the number of wheel connectors 232 is two, the walking wheel 231 is clamped between the two wheel connectors 232 along the third direction, the wheel axle 234 passes through the two wheel connectors 232 and the walking wheel 231, and the walking wheel 231 is configured to be able to rotate around the wheel axle 234; the pivot shaft 233 passes through the two wheel connectors 232 and is connected to the carrier 210, and the two wheel connectors 232 are configured to be able to swing around the pivot shaft 233. The pivot shaft 233 is parallel to the third direction, and there is an angle between the pivot shaft 233 and the extending direction of the load-bearing cable 110. Optionally, the pivot shaft 233 is perpendicular to the extending direction of the load-bearing cable 110.

[0116] See Figures 1 - 19 As shown, in the alternative solution of this embodiment, the carrier 210 includes a carrier body 211 and a wheel set mounting portion 212; the paired wheel set mounting portions 212 are symmetrically connected to both ends of the carrier body 211; the connecting frame 220 is connected to the carrier body 211, and the walking wheel set 230 is connected to the wheel set mounting portion 212; by setting the carrier 210 as the carrier body 211 and the wheel set mounting portion 212, it helps the carrier 210 to support and connect the connecting frame 220, the walking wheel set 230 and the rope connecting structure 240.

[0117] As Figures 6 - 9 、 Figures 16 - 19 As shown, at least two walking wheel sets 230 are provided on one side of the carrier 210, wherein the two walking wheel sets 230 are arranged on both sides of the wheel set mounting portion 212, and the pivot shafts 233 corresponding to the two walking wheel sets 230 are the same pivot shaft 233; the pivot shaft 233 passes through the wheel set mounting portion 212 and is connected to the corresponding wheel connectors 232. By providing at least two walking wheel sets 230, the walking stability of the carrier device 200 is improved.

[0118] Optionally, the paired walking wheel sets 230 are symmetrically arranged on the carrier 210; optionally, the paired load-bearing cables 110 are symmetrically arranged on both sides of the carrier device 200; optionally, the paired towing cables 120 are symmetrically arranged on both sides of the carrier device 200.

[0119] Optionally, the towing cable 120 is located between the paired load-bearing cables 110; the load-bearing cable 110 is located above the towing cable 120; by locating the load-bearing cable 110 above the towing cable 120, it helps the load-bearing cable 110 to carry the carrier device 200 and the energy storage device 300.

[0120] Optionally, the connecting frame 220 includes at least two connecting rod portions; the connecting rod portions are connected between the carrying frame 210 and the energy storage device 300. Through the at least two connecting rod portions, the bearing capacity and stability of the connecting frame 220 for carrying the energy storage device 300 are improved. As Figure 8 shown, when the connecting frame 220 is a suspension frame 221, the suspension frame 221 includes at least two suspension rod portions; the suspension rod portions are connected between the carrying frame 210 and the energy storage device 300; through the at least two suspension rod portions, the bearing capacity and stability of the suspension frame 221 for carrying the energy storage device 300 are improved. As Figure 18 shown, when the connecting frame 220 is a support frame 222, the support frame 222 includes at least two support rod portions; the support rod portions are connected between the carrying frame 210 and the energy storage device 300; through the at least two support rod portions, the bearing capacity and stability of the support frame 222 for carrying the energy storage device 300 are improved.

[0121] In an alternative embodiment of the present invention, a tensioning device is connected to both the load-bearing cable 110 and the towing cable 120; the tensioning device includes one or more of a weight type structure, a hydraulic type structure, and a lead screw type structure, and other forms of structures can also be adopted for the tensioning device. Through the tensioning device, the pre-tightening force of the load-bearing cable 110 and the towing cable 120 is increased, which helps the normal operation of the load-bearing cable 110 and the towing cable 120. Figure 3 and Figure 13 shown, the tensioning device is of a lead screw type structure.

[0122] The load-bearing cable type gravity flow energy storage system provided in this embodiment has the following beneficial effects compared with the prior art:

[0123] 1. The paired towing cables 120 are used to drive the movement of the energy storage device 300, and the paired load-bearing cables 110 bear the load of the energy storage device 300, effectively reducing the load borne by a single cableway, ensuring the safety and reliability of the system, and improving the load-bearing capacity of the system. Compared with using a single cable for both load-bearing and towing, the safety and stability are higher. At the same time, the reduction of the load on a single cableway means that more energy storage devices 300 can be transported synchronously, improving the system's transportation capacity, ensuring the high-efficiency operation of the energy storage and power generation states, and enabling high-power storage / discharge of electric energy.

[0124] 2. The axial directions of both the first steering structure 130 and the second steering structure 140 are parallel to the horizontal direction. This is equivalent to both the first steering structure 130 and the second steering structure 140 rotating around an axis parallel to the horizontal direction. Compared with a steering structure that rotates around an axis parallel to the vertical direction, the first steering structure 130 and the second steering structure 140 of this embodiment require less ground space and have simpler terrain requirements, making it easier to install in more slope sections. At the same time, the smaller installation space facilitates the installation of multiple systems simultaneously, which can improve the system's transportation capacity and increase the large-power storage / discharge of electric energy.

[0125] 3. The carrier device 200 is fixedly installed on the load-bearing cable 110, and the carrier device 200 loaded with the energy storage device 300 transports the energy storage device 300 along the load-bearing cable 110. Compared with the detachable installation, not only is the system structure simple, but also the use of components that need to be frequently opened and closed is avoided, ensuring the reliability of system installation and reducing the maintenance cost.

[0126] 4. Using the load-bearing cable 110 as the sliding track avoids heavy components such as steel rails, reduces the transportation difficulty during system installation, and is more convenient for deployment.

[0127] 5. The energy storage device 300 handling system generates a continuous gravity flow, which can form a stable and adjustable energy flow, thereby realizing continuous discharge.

[0128] 6. By changing the lifting speed of the gravity flow or changing the size of the gravity flow, the power consumption or power generation in real-time status can be arbitrarily adjusted; the energy storage device 300 is safely and economically stored and efficiently and quickly accessed.

[0129] 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 150, the drum 160 also increases the contact area with the towing cable 120, thereby increasing the friction force between the drum 160 and the towing cable 120, and thus improving the charging / discharging efficiency to a certain extent. In addition, the drum 160 can also provide a more uniform contact force with the towing cable 120, which can effectively reduce the wear of the towing cable 120 and extend the service life of the towing cable 120. At the same time, the drum 160 is less likely to slip, which is more beneficial to the stability of the load-bearing cable type gravity flow energy storage system.

[0130] To more clearly understand the load-bearing cable type gravity flow energy storage system described in this embodiment, the following briefly describes the energy storage method:

[0131] During energy storage charging, the energy storage device 300 is 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 traction cable 120 to operate in the first direction, and further drive all the carrying devices 200 to walk under the traction of the traction cable 120. A plurality of energy storage devices 300 are successively assembled on the carrying device 200 and transported along the load-bearing cable 110 to a high altitude position and unloaded, so as to convert electric energy into gravitational potential energy for storage.

[0132] During discharging, the energy storage device 300 is at a high altitude position. A plurality of energy storage devices 300 are successively assembled on the carrying device 200 and walk along the load-bearing cable 110 to a low altitude position and unloaded, driving the traction cable 120 to operate in the second direction. The traction 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 the continuous online walking of several energy storage devices 300 is converted into a continuous energy flow, thus realizing continuous charging and discharging.

[0133] In one embodiment, a plurality of energy storage devices 300 are successively assembled on the carrying device 200 one by one at a preset interval, so that the energy storage devices 300 are continuously carried. Among them, the preset interval is, for example, one energy storage device 300 is assembled on each carrying device 200, or one energy storage device 300 is assembled on every other carrying device 200, or one energy storage device 300 is assembled on every two carrying devices 200 separated, etc.

[0134] 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 further 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 adjusted, 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 load-bearing cable type gravitational flow energy storage system is wider.

[0135] In one embodiment, the number of load-bearing cable type gravitational flow energy storage systems is multiple; a plurality of load-bearing cable type gravitational flow energy storage systems are installed side by side in the horizontal direction according to the mountain slope terrain, and / or a plurality of load-bearing cable type gravitational flow energy storage systems are stacked in the up and down direction according to the mountain slope terrain. By installing a plurality of load-bearing cable type gravitational flow energy storage systems side by side in the horizontal direction according to the mountain slope terrain, and stacking a plurality of load-bearing cable type gravitational flow energy storage systems in the up and down direction according to the mountain slope terrain, a larger-scale energy storage can be realized.

[0136] In order to more clearly understand the load-bearing cable type gravitational flow energy storage system described in this embodiment, the following is an example:

[0137] Energy storage stage: During the energy storage process, when the driving device 400 and the power generation device 500 are motor-generators, the motor-generator plays a core role in energy conversion. The motor-generator draws electrical energy from the power grid and converts it into kinetic energy. The kinetic energy is then smoothly transmitted to the first steering structure 130 and the second steering structure 140, driving them to rotate in the clockwise direction. The first steering structure 130 and the second steering structure 140 drive the traction cable 120 to start moving by virtue of the friction force between their surfaces and the traction cable 120. Both the first steering structure 130 and the second steering structure 140 rotate in the clockwise direction. As the traction cable 120 continues to move, the carrier device 200 clamped on it is towed to move forward along the load-bearing cable 110. The carrier device 200 is equipped with a connecting frame 220 and carries the energy storage device 300 located in the lower storage yard, moving it together with the carrier device 200. When approaching the upper storage yard, the energy storage device 300 is separated from the connecting frame 220 on 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 continues to travel along the traction cable 120 and finally returns to the lower storage yard again, ready to start a new round of energy storage device 300 transportation tasks.

[0138] Discharge stage: During the discharge process, the energy storage device 300 located in the upper storage yard is brought into a section of the load-bearing cable 110 by the carrier device 200. The energy storage device 300 is fixed through the connecting frame 220 on the carrier device 200. Subsequently, under the action of gravity, the energy storage device 300 drives the carrier device 200 to slide downward along the load-bearing cable 110 together, releasing the stored energy. The carrier device 200 drives the traction cable 120 to start moving through its clamping force. The traction cable 120 transmits the movement to the first steering structure 130 and the second steering structure 140 through the friction force between it and the first steering structure 130 and the second steering structure 140, driving the first steering structure 130 and the second steering structure 140 to rotate in the counterclockwise direction, and then transmitting it to the motor-generator. The motor-generator enters the power generation mode, converts kinetic energy into electrical energy, and inputs it into the power grid. When approaching the lower storage yard, the energy storage device 300 is separated from the connecting frame 220 on 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. The carrier device 200 continues to travel along the traction cable 120. Finally, the carrier device 200 returns to the upper storage yard, ready to start a new round of energy storage device 300 transportation tasks.

[0139] Example of the power generation of the load-bearing cable type gravity flow energy storage system described in this embodiment:

[0140] When both the first steering structure 130 and the second steering structure 140 are steering wheels 150, the energy storage device 300 is mainly made of reinforced concrete with a density of 2500 kg / m 3。It is a cuboid with a length of 1.2 meters, a width of 1.2 meters, and a height of 1.0 meter, weighing 3.6 tons. Assuming the vertical height difference of the hillside is 500 meters, when a single energy storage device 300 is lifted from the bottom of the mountain (i.e., low altitude) to the top of the mountain (i.e., high altitude), the stored energy E = mgh = 3.6×10 3 kg×9.8m / s 2 ×500m = 17,640,000J = 4.9 kWh. Referring to the operating speeds of equipment such as passenger ropeways, freight ropeways, and mine hoists, if the speed is 8 meters per second, it can run 28.8 kilometers per hour. Assuming the energy storage devices are arranged at intervals of 10 meters, 2880 energy storage devices can be transported to the top of the mountain per hour, and the energy stored per hour is 2880 units × 4.9 kWh / unit = 14112.0 kW·h ≈ 14.1 MWh. To improve the power generation capacity, multi-system parallel multi-row and / or up-and-down stacked arrangements can be adopted on the hillside terrain; the speed of the traction cable 120 can also be increased or the spacing of the energy storage devices 300 can be reduced to expand the energy storage scale.

[0141] When both the first steering structure 130 and the second steering structure 140 are drums 160, the energy storage device 300 has a reinforced concrete main body with a density of 2500 kg / m 3 。It is a cuboid with a length of 1.2 meters, a width of 1.2 meters, and a height of 1.0 meter, weighing 3.6 tons. Assuming the vertical height difference of the hillside is 500 meters, when a single energy storage device 300 is lifted from the bottom of the mountain (i.e., low altitude) to the top of the mountain (i.e., high altitude), the stored energy E = mgh = 3.6×10 3 kg×9.8m / s 2 ×500m = 17,640,000J = 4.9 kWh. Referring to the operating speeds of equipment such as passenger ropeways, freight ropeways, and mine hoists, if the speed is 8 meters per second, it can run 28.8 kilometers per hour. Assuming the energy storage devices are arranged at intervals of 8 meters, 3600 energy storage devices can be transported to the top of the mountain per hour, and the energy stored per hour is 3600 units × 4.9 kWh / unit = 17640.0 kW·h ≈ 17.6 MWh. To improve the power generation capacity, multi-system parallel multi-row and / or up-and-down stacked arrangements can be adopted on the hillside terrain; the speed of the traction cable 120 can also be increased or the spacing of the energy storage devices 300 can be reduced to expand the energy storage scale.

[0142] 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, the present invention can have various changes and modifications. 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 load-bearing rope gravity flow energy storage system, characterized in that: The invention comprises a first steering structure (130), a second steering structure (140), a carrier (200), an energy storage device (300), a driving device (400), a power generation device (500), and a storage yard, and also comprises at least one pair of carrying ropes (110) for carrying the carrier (200) and at least one pair of traction ropes (120) for traction the carrier (200); the energy storage device (300) is detachably connected to the carrier (200); The traction rope (120) circulates between the first steering structure (130) and the second steering structure (140); wherein 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 low altitude position and the high altitude position are both provided with the storage yard for storing the energy storage device (300); The driving device (400) is connected to the first steering structure (130) and / or the second steering structure (140) so as to drive the traction rope (120) to move in a first direction; all the carriers (200) travel under the traction of the traction rope (120) so as to enable the plurality of energy storage devices (300) to be successively transported to a high altitude along the carrying rope (110), thereby converting 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 carrying rope (110) to successively transport the plurality of energy storage devices (300) to a low altitude and form a continuous gravity flow, while driving the first steering structure (130) and the second steering structure (140) to operate along the traction 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 load-bearing cable 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.

3. The load-bearing cable gravity flow energy storage system according to claim 1, characterized in that: The first steering structure (130) and the second steering structure (140) are steering wheels (150) or reels (160) respectively; When the first steering structure (130) or the second steering structure (140) is a steering wheel (150), the number of the steering wheels (150) located at a low altitude or at a high altitude is consistent with the number of the traction ropes (120), and the steering wheels (150) are provided with wheel grooves that cooperate with the traction ropes (120); all the steering wheels (150) located at a low altitude or at a high altitude 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 all the traction 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 bracket; 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.

4. The load-bearing cable gravity flow energy storage system according to claim 1, characterized in that: Each of the traction ropes (120) is ring-shaped; the traction rope (120) comprises a first traction rope portion, a second traction rope portion and two traction matching portions; the two traction matching portions are matched with the first steering structure (130) and the second steering structure (140) respectively; two ends of the first traction rope portion and two ends of the second traction rope portion are respectively connected to the traction matching portions to form a ring; The first traction rope portion and the second traction rope portion both comprise two traction guide sections (122) and one traction inclined section (123); the traction inclined section (123) is connected between the two traction guide sections (122); The load-bearing rope type gravity flow energy storage system further comprises a traction guide device (126); the traction guide device (126) is provided at both the low altitude position and the high altitude position; The traction inclined section (123) is located between the traction guide device (126) at the low altitude position and the traction guide device (126) at the high altitude position.

5. The load-bearing cable gravity flow energy storage system according to claim 4, characterized in that: The load-bearing cable (110) comprises two load-bearing fixed sections (111), two load-bearing guide sections (112) and one load-bearing inclined section (113); the load-bearing guide section (112) is connected between the load-bearing fixed section (111) and the load-bearing inclined section (113); The load-bearing rope-type gravity flow energy storage system further comprises a load-bearing fixing device (114), a load-bearing supporting device (115) and a load-bearing guiding device; the load-bearing fixing device (114), the load-bearing supporting device (115) and the load-bearing guiding device are arranged at both the low altitude position and the high altitude position; The end of each load-bearing cable (110) passes through the load-bearing guide device and the load-bearing support device (115) in sequence and is fixedly connected to the load-bearing fixing device (114); the load-bearing fixing section (111) is located between the load-bearing fixing device (114) and the load-bearing support device (115); the load-bearing guide section (112) is located between the load-bearing support device (115) and the load-bearing guide device; and the load-bearing inclined section (113) is located between the load-bearing guide device at a low altitude position and the load-bearing guide device at a high altitude position; The load-bearing fixing device (114) adopts an anchoring method; The traction guide section (122) is parallel to the horizontal direction; the load-bearing guide section (112) is parallel to the horizontal direction; The first traction rope portion is connected to the top of the first steering structure (130), and the second traction rope portion is connected to the bottom of the first steering structure (130); the position of the traction guide section (122) of the first traction rope portion corresponds to the position of the load-bearing guide section (112), and the position of the traction inclined section (123) of the first traction rope portion corresponds to the position of the load-bearing inclined section (113).

6. The load-bearing cable gravity flow energy storage system according to claim 1, characterized in that: The carrying device (200) comprises a carrying frame (210), a connecting frame (220), a running wheel set (230) and a rope connecting structure (240); When both the first steering structure (130) and the second steering structure (140) are steering wheels (150), the connecting frame (220) is a suspension frame (221), and the suspension frame (221) is rotatably connected to the carrier frame (210); when at least one of the first steering structure (130) and the second steering structure (140) is a reel (160), the connecting frame (220) is a support frame (222), and the support frame (222) is fixedly connected to the carrier frame (210); The energy storage device (300) is detachably connected to the connecting frame (220); At least one pair of the running wheel assemblies (230) is arranged on both sides of the carrier frame (210); the running wheel assemblies (230) are configured to be able to run on the carrying cables (110); the number of the running wheel assemblies (230) is the same as the number of the carrying cables (110); At least one pair of the rope connection structures (240) is rotatably connected to both sides of the carrier frame (210); the rope connection structure (240) is fixedly connected to the traction rope (120), and an angle is formed between the rotation axis of the rope connection structure (240) and the extension direction of the traction rope (120).

7. The load-bearing cable gravity flow energy storage system according to claim 6, characterized in that: Each of the traction ropes (120) is ring-shaped; The rope connection structure (240) comprises a rope connection body (241) and a claw (242); the claw (242) is fixedly connected to the end of the rope connection body (241), and the jaw (243) of the claw (242) faces the center line of the traction rope (120); The claw (242) is fixedly connected to the traction rope (120); A carrying bearing (244) is connected between the rope connection body (241) and the carrying frame (210).

8. The load-bearing cable gravity flow energy storage system according to claim 6, characterized in that: The traveling wheel set (230) comprises at least one wheel assembly; when there are multiple wheel assemblies, the multiple wheel assemblies are arranged in sequence along the extension direction of the load-bearing cable (110); The wheel assembly comprises a running wheel (231) and a wheel connecting member (232); in the same wheel assembly, the number of the running wheels (231) is at least two, and all the running wheels (231) are rotatably connected to the wheel connecting member (232) in sequence along the extension direction of the load-bearing cable (110); and the wheel connecting member (232) is pivotally connected to the carrier frame (210).

9. The load-bearing cable gravity flow energy storage system according to claim 8, characterized in that: The wheel assembly further comprises a pivot shaft (233) and a wheel shaft (234) parallel to the pivot shaft (233); In the same wheel assembly, the number of the wheel connectors (232) is two, the running wheel (231) is sandwiched between the two wheel connectors (232) along a third direction, the wheel axle (234) passes through the two wheel connectors (232) and the running wheel (231), and the running wheel (231) is configured to be able to rotate around the wheel axle (234); the pivot shaft (233) passes through the two wheel connectors (232) and is connected to the carrier frame (210), the two wheel connectors (232) are configured to be able to swing around the pivot shaft (233), and the pivot shaft (233) is parallel to the third direction and has an angle with the extension direction of the load-bearing cable (110).

10. The load-bearing cable gravity flow energy storage system according to claim 9, characterized in that: The carrier frame (210) comprises a carrier frame body (211) and a wheel assembly mounting portion (212); the wheel assembly mounting portions (212) arranged in pairs are symmetrically connected to two ends of the carrier frame body (211); the connecting frame (220) is connected to the carrier frame body (211), and the running wheel assembly (230) is connected to the wheel assembly mounting portion (212); At least two running wheel assemblies (230) are arranged on one side of the carrier frame (210), wherein the two running wheel assemblies (230) are arranged on both sides of the wheel assembly mounting portion (212), and the pivot shafts (233) corresponding to the two running wheel assemblies (230) are the same pivot shaft (233); the pivot shaft (233) passes through the wheel assembly mounting portion (212) and is connected to the corresponding wheel connecting member (232).

11. The load-bearing cable gravity flow energy storage system according to claim 6, characterized in that: The traveling wheel groups (230) arranged in pairs are symmetrically arranged on the carrier frame (210); the carrying cables (110) arranged in pairs are symmetrically arranged on both sides of the carrier device (200); and the traction cables (120) arranged in pairs are symmetrically arranged on both sides of the carrier device (200); The traction rope (120) is located between the supporting ropes (110) arranged in pairs; the supporting rope (110) is located above the traction rope (120); The connecting frame (220) comprises at least two connecting rod portions; the connecting rod portions are connected between the carrier frame (210) and the energy storage device (300).

12. The load-bearing cable gravity flow energy storage system according to claim 1, characterized in that: The load-bearing rope (110) and the traction rope (120) are both connected to a tensioning device; the tensioning device comprises one or more of a weight-type structure, a hydraulic type structure and a screw type structure; The load-bearing rope gravity flow energy storage system further comprises a transfer device; the transfer device is provided at both the low altitude position and the high altitude position; the energy storage device (300) is transported back and forth between the storage yard and the transport device (200) by the transfer device.

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