Rail type gravity flow energy storage system

Abstract

The utility model relates to a rail type gravity flow energy storage system which comprises a double-circulation bearing mechanism, a double-circulation traction mechanism, a driving mechanism and a steering mechanism. The double-circulation bearing mechanism and the double-circulation traction mechanism respectively comprise bearing rails and traction ropes which are arranged in pairs; the bearing track comprises a closed track, and the traction rope surrounds between the driving mechanism and the steering mechanism in a closed mode and is driven by the driving mechanism to continuously run; a plurality of carrying mechanisms capable of running along the bearing rails in a closed loop mode are arranged between the bearing rails, the traction rope is connected with the carrying mechanisms and used for enabling the traction rope to pull and drive the carrying mechanisms to run continuously, and the carrying mechanisms are used for carrying energy storage blocks serving as energy storage carriers; the driving mechanism is connected with an electric power generation mechanism, the energy storage blocks located at the bottom of the stacking and transporting field are continuously lifted through the driving mechanism to form continuous gravity flow, and gravitational potential energy is converted into electric energy of the electric power generation mechanism through continuous descending of the energy storage blocks located at the top of the stacking and transporting field to form continuous energy flow.

Description

Technical Field

[0001] This application relates to the technical field of gravity energy storage, and more particularly, to an orbital gravity flow energy storage system. Background Art

[0002] In recent years, the electricity demand in China has maintained a steady growth trend, and the proportion of new power generation technologies such as wind power / solar power in energy utilization has also been gradually increasing. However, renewable energy dominated by wind power and solar power has the characteristics of randomness, volatility, and intermittency, and 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.

[0003] 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.

[0004] Pumped-storage energy 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 has gradually attracted attention.

[0005] The existing gravity energy storage system uses large loads to rise and fall successively, and mainly has the following technical problems:

[0006] The intermittent load generated by lifting and lowering energy storage blocks one by one results in discontinuous charge and discharge.

[0007] The problem of real-time load matching. During a single power generation process, the weight of the heavy object is fixed, so the power generation power is also fixed and cannot be dynamically adjusted according to the actual load demand. Utility Model Content

[0008] The purpose of this application is to provide an orbital gravity flow energy storage system that can solve the existing technical problems of the above-mentioned gravity energy storage system.

[0009] To achieve the above purpose, the present utility model provides an orbital gravity flow energy storage system, including: a top stacking yard and a bottom stacking yard, and a double-loop bearing mechanism, a double-loop traction mechanism, a driving mechanism, and a steering mechanism are arranged between the top stacking yard and the bottom stacking yard;

[0010] The double-loop bearing mechanism and the double-loop traction mechanism each include a pair of bearing tracks and traction ropes;

[0011] The bearing track includes a closed-circuit track, and the traction rope is enclosed and wound between the driving mechanism and the steering mechanism and continuously runs under the drive of the driving mechanism;

[0012] A plurality of carrier mechanisms capable of running in a closed loop are arranged between the load-bearing tracks. The towing rope is connected to the carrier mechanism so as to be able to drive the carrier mechanism to run continuously by towing the towing rope. The carrier mechanism is used to carry energy storage blocks as energy storage carriers.

[0013] The driving mechanism is connected with an electric power generation mechanism. By the driving mechanism, the energy storage blocks in the bottom stacking yard are continuously lifted to form a continuous gravity flow, and, by the continuous descent of the energy storage blocks in the top stacking yard, the gravitational potential energy is converted into the electric energy of the electric power generation mechanism to form a continuous energy flow.

[0014] In an alternative embodiment, the driving mechanism is arranged in the top stacking yard, and the steering mechanism is arranged in the bottom stacking yard;

[0015] Or, the driving mechanism is arranged in the bottom stacking yard, and the steering mechanism is arranged in the top stacking yard;

[0016] Or, the driving mechanism is arranged in both the top stacking yard and the bottom stacking yard.

[0017] In an alternative embodiment, the double-loop load-bearing mechanism includes two parallel upwardly inclined closed-loop load-bearing tracks, and the double-loop towing mechanism includes two parallel upwardly inclined closed-loop surrounding towing ropes, and at least a part of the towing ropes surrounds the driving mechanism and the steering mechanism.

[0018] In an alternative embodiment, the towing ropes are arranged inside or outside the load-bearing tracks, and the carrier mechanism is connected between the two towing ropes;

[0019] The closed-loop plane of the load-bearing tracks is parallel to the closed-loop plane of the towing ropes.

[0020] In an alternative embodiment, the two load-bearing tracks are mirror-symmetrical with respect to the towing ropes, and each load-bearing track respectively includes an upper branch track and a lower branch track corresponding up and down;

[0021] The upper branch track and the lower branch track respectively include an inclined section, a horizontal guiding section, an arc-shaped steering section and an end steering section which are oppositely arranged, and at least a part of the branch tracks are cross-overlapped at the end steering section.

[0022] In an alternative embodiment, the two towing ropes respectively include single closed-loop annular towing ropes, the annular towing ropes respectively surround and pass through the driving mechanism and the steering mechanism, and the different sections of the annular towing ropes corresponding to the load-bearing tracks are in the same plane, forming the surrounding plane of the towing ropes.

[0023] In an alternative embodiment, the carrier mechanism is connected to the towing rope through a rope connection mechanism. The rope connection mechanism is connected to the carrier mechanism and fixedly connected to the towing rope. The carrier mechanism includes a mounting plate for mounting the rope connection mechanism, and the rope connection mechanism is mounted on the mounting plate through a slewing bearing.

[0024] In an alternative embodiment, the rope connection mechanism includes a fixing device fixed to the towing rope. The fixing device includes a fixing jaw with a clamping mouth, and the towing rope is fixedly installed in the clamping mouth.

[0025] In an alternative embodiment, a slewing guide rail is provided at the positions of the driving mechanism and the steering mechanism. The slewing guide rail includes a guiding rail section and a steering rail section that are slewing-connected. The guiding rail section and the steering rail section respectively include a horizontal rail and an arc rail that are spaced apart from the bearing rail;

[0026] The starting end of the guiding rail section is arranged above the horizontal guiding section and is incorporated into one of the branch tracks after slewing through the steering rail section. The end steering section of the other branch track interrupts the track at the merging position of the slewing guide rail.

[0027] In an alternative embodiment, the driving mechanism includes a double-wheel driving mechanism. The double-wheel driving mechanism includes two driving wheels arranged in parallel, and a horizontal transmission shaft. The two driving wheels are vertically connected to the horizontal transmission shaft and are arranged symmetrically.

[0028] The electric power generating mechanism includes an electric generator. The electric generator includes an output shaft, and the output shaft is connected to one end of the horizontal transmission shaft through a coupling;

[0029] Alternatively, the electric power generating mechanism includes a generator and a motor. The two driving wheels are independently driven respectively. The generator and the motor respectively include an output shaft, and the output shafts are respectively connected to the horizontal transmission shaft through couplings;

[0030] The two towing ropes respectively surround the corresponding driving wheels, and are used to drive the towing rope to run by the driving wheel through the frictional force of the surrounding contact, or to drive the driving wheel to run by the towing rope.

[0031] In an alternative embodiment, the steering mechanism includes two vertically installed steering wheels arranged in parallel. The steering wheels have the same structure as the driving wheels, and the wheel surfaces of the steering wheels and the driving wheels are arranged on the same plane;

[0032] Each of the towing ropes is wound around and enclosed between the corresponding driving wheels and steering wheels in a group. Grooves are respectively provided on the wheel surfaces of the driving wheels and the steering wheels, and the towing ropes are pressed and wound in the grooves.

[0033] In an alternative embodiment, the carrier mechanism includes carrier frames located on both sides and correspondingly arranged with the bearing track, and a connecting cross beam is connected between the carrier frames;

[0034] Wheels capable of running along the bearing track are respectively installed on the carrier frames, and the carrier frames move in a closed loop around the bearing track under the traction of the towing ropes;

[0035] Lifting cantilevers are installed at intervals on the connecting cross beam. The lifting cantilevers are used for lifting the energy storage blocks. Two ends of the connecting cross beam are respectively connected to the carrier frames, and the energy storage blocks are detachably connected to the bottoms of the lifting cantilevers;

[0036] The lifting cantilevers are rotatably connected to the connecting cross beam, or the connecting cross beam is rotatably connected to the carrier frames.

[0037] In an alternative embodiment, the driving mechanism includes a drum driving mechanism. The drum driving mechanism includes a horizontally installed driving drum and a horizontally installed drum transmission shaft;

[0038] The electric power generation mechanism includes an electric generator. The electric generator includes an output shaft, and one end of the output shaft is connected to one end of the drum transmission shaft through a coupling;

[0039] Alternatively, the electric power generation mechanism includes a generator and a motor. The generator and the motor respectively include output shafts, and the output shafts are respectively connected to two ends of the drum transmission shaft through couplings;

[0040] Both of the two towing ropes are wound around the driving drum, and are used to drive the towing ropes to run by the driving drum through the frictional force of the circumferential contact, or to drive the driving drum to run by the towing ropes.

[0041] In an alternative embodiment, the steering mechanism includes a horizontally installed steering drum. The steering drum has the same structure as the driving drum, and the end face of the steering drum and the end face of the driving drum are arranged on the same plane;

[0042] Each of the towing ropes is wound around and enclosed between the driving drum and the steering drum. Friction linings are respectively provided on the drum surfaces of the driving drum and the steering drum. The friction linings are arranged at intervals for the towing ropes to be pressed and wound around, and the friction linings are provided with rope grooves and devices fixed to the driving drum or the steering drum.

[0043] In an alternative embodiment, the carrier mechanism includes a load frame, and a connecting rod for mounting the energy storage block is provided on the load frame;

[0044] Wheels capable of running along the bearing track are mounted on the load frame, and the load frame moves in a closed loop around the bearing track under the traction of the traction rope.

[0045] In an alternative embodiment, the carrier mechanisms are connected to the traction rope at equal intervals;

[0046] The energy storage blocks correspond one-to-one with the carrier mechanisms, or the energy storage blocks are spaced apart from the carrier mechanisms. The traveling speed of the carrier mechanisms can be adjusted along with the traction rope, so as to realize the adjustability of the gravity flow.

[0047] In an alternative embodiment, multiple sets of the track-type gravity flow energy storage systems are included, and the multiple sets of the track-type gravity flow energy storage systems are arranged side by side in multiple rows and / or stacked up and down on a hillside terrain.

[0048] The track-type gravity flow energy storage system in the present application can realize the distributed bearing of the gravity energy storage blocks, avoid single-point overload, and improve the operation safety of the system.

[0049] Through the mutual cooperation of the bearing track, the carrier mechanism and the traction rope, multiple carrier mechanisms can form a continuous and steady traction operation during the operation of the driving wheel. Combining the transportation of the energy storage blocks by the carrier mechanism, a stable and continuous gravity flow and energy flow can be obtained during the energy storage stage and the power generation stage. On the premise of improving the transportation capacity, the high-efficiency operation of the energy storage and power generation states can be ensured, and high-power storage / discharge of electric energy can be realized.

[0050] Through the decoupling of the bearing and traction formed by the bearing track and the traction rope, compared with the common gravity flow energy storage system, the system has a stronger bearing capacity and a more balanced load, making the formation process of the continuous gravity flow and energy flow more stable and reliable.

[0051] Parallelly arranging vertically installed driving wheels or horizontally arranged driving drums can reduce the space occupation, facilitate the formation of the driving and traction surfaces corresponding to the two traction ropes respectively, and ensure the stable and reliable continuous circulation of the traction rope.

[0052] By means of the mutual cooperation of the bearing track, the carrier mechanism and the traction rope, a trinity composite transmission system is constructed. Compared with the traditional single-cable bearing and traction, the safety and stability are improved to the greatest extent.

[0053] Meanwhile, the energy storage blocks are transported, lifted, and transferred by the transportation mechanism. Compared with the detachable installation of the energy storage blocks, the transportation structure can be simplified, the additional components for frequent opening and closing of the energy storage blocks can be reduced, the reliability of the system installation is ensured, and the maintenance cost is lowered.

[0054] The orbital gravity flow energy storage system in this application can form continuous and steady gravity flow and energy flow. By adjusting the rotational speed of the electric power generation mechanism and the connection interval of the energy storage blocks, the power consumption or power generation in the real-time state can be arbitrarily adjusted, thereby realizing the functions of "slow charge and fast discharge" or "charge and discharge on demand".

[0055] Combining multiple sets of orbital gravity flow energy storage systems to achieve side-by-side multi-module and / or up-and-down stacked layout according to the hillside terrain can achieve larger-scale energy storage.

[0056] Other features and advantages of this application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application 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.

[0058] Figure 1 It is a schematic diagram of the overall structure of the wheel-driven orbital gravity flow energy storage system of this application;

[0059] Figure 2 It is a schematic diagram of the structure of the two-wheel drive mechanism of this application;

[0060] Figure 3 It is a schematic diagram of the structure of the transportation mechanism and the energy storage blocks in the wheel-driven orbital gravity flow energy storage system of this application;

[0061] Figure 4 It is a schematic diagram of the top structure of the bearing track in the wheel-driven orbital gravity flow energy storage system of this application;

[0062] Figure 5 It is a schematic diagram of the overall structure of the drum-driven orbital gravity flow energy storage system of this application;

[0063] Figure 6 It is a schematic diagram of the structure of the drum drive mechanism of this application;

[0064] Figure 7 It is a schematic diagram of the structure of the transportation mechanism and the energy storage blocks in the drum-driven orbital gravity flow energy storage system of this application;

[0065] Figure 8 This is a schematic top view of the load-bearing track in the drum-driven orbital gravity flow energy storage system of the present application;

[0066] Figure 9 This is a schematic view of the rope connection mechanism in the present application.

[0067] Icon:

[0068] 1 - Load-bearing track; 1a - Inclined section; 1b - Horizontal guiding section; 1c - Arc-shaped turning section; 1d - End turning section; 11 - Upward branch track; 12 - Downward branch track;

[0069] 2 - Towing rope;

[0070] 3 - Driving wheel; 3a - First active driving wheel; 3b - Second active driving wheel; 31 - Horizontal transmission shaft; 32 - Steering wheel; 33 - Groove;

[0071] 4 - Carrying mechanism; 41 - Carrying vehicle frame; 42 - Connecting cross beam; 43 - Wheels; 44 - Hoisting cantilever; 45 - Mounting plate; 46 - Load vehicle frame; 47 - Connecting rod;

[0072] 5 - Energy storage block;

[0073] 6 - Electric power generation mechanism;

[0074] 7 - Driving support;

[0075] 8 - Rope connection mechanism; 81 - Slewing bearing; 82 - Jaw;

[0076] 9 - Slewing guide rail; 91 - Guiding rail section; 92 - Steering rail section;

[0077] 10 - Support column; 10a - Leg;

[0078] 30 - Driving drum; 301 - Drum transmission shaft; 302 - Steering drum; 303 - Rope groove; 304 - Friction lining. Detailed implementation manners

[0079] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0080] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of this application are usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0081] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0082] The orbital gravity flow energy storage system in the present application is mainly used in the field of gravity energy storage. Through the combination of the track bearing effect and the traction effect, the continuous operation of the energy storage carrier is realized, and then the continuous gravity flow and energy flow are realized.

[0083] By optimizing the structure and energy storage method of the existing gravity energy storage system, a continuous and stable gravity flow and energy flow are formed, and at the same time, space is created for the scale adjustment of the gravity flow and energy flow.

[0084] The combination of the bearing effect and the traction effect decouples the bearing and the traction, which can avoid the risk of single-point stress concentration and ensure the stable and reliable continuous gravity flow and energy flow at the same time.

[0085] See Figure 1 and Figure 5 , in the orbital gravity flow energy storage system of the present utility model, the main structure includes a double-cycle bearing mechanism, a double-cycle traction mechanism, a driving mechanism, and a steering mechanism. The main structure composed of the above different mechanisms is arranged between the top stacking yard and the bottom stacking yard.

[0086] The double-cycle bearing mechanism and the double-cycle traction mechanism respectively include paired bearing tracks 1 and traction ropes 2, specifically forming a bearing structure and a traction structure.

[0087] The bearing track 1 includes a closed-circuit track, and the traction rope 2 is enclosed and surrounded between the driving mechanism and the steering mechanism and continuously runs under the drive of the driving mechanism;

[0088] A plurality of carrier mechanisms 4 capable of running in a closed loop are arranged between the load-bearing tracks 1. The traction rope 2 is connected to the carrier mechanism 4 so as to enable the traction rope 2 to drive the carrier mechanism 4 to run continuously. The carrier mechanism 4 is used to carry energy storage blocks 5 as energy storage carriers.

[0089] The driving mechanism is connected with an electric power generation mechanism 6. Through the driving mechanism, the energy storage blocks 5 in the bottom stacking yard are continuously lifted to form a continuous gravity flow. Moreover, through the continuous descent of the energy storage blocks 5 in the top stacking yard, the gravitational potential energy is converted into the electric energy of the electric power generation mechanism 6 to form a continuous energy flow.

[0090] Through the orbital gravity flow energy storage system in the present utility model, a stable and continuous carrying state of the energy storage blocks 5 can be formed, and effective continuous gravity flow and energy flow can be formed during the energy storage stage and the discharge stage.

[0091] The driving mechanism is arranged in the top stacking yard, and the steering mechanism is arranged in the bottom stacking yard, that is, the driving mechanism is installed on the high-lying terrain platform. Through this setting method, the driving mechanism can directly output and transfer the traction load to the carrier mechanism 4 and the energy storage blocks 5, reduce the load during the energy storage process of the energy storage system, reduce the overall stress load of the traction rope 2, and compared with the traditional form of setting the driving mechanism at the bottom, it can reduce the ineffective load during bottom traction and improve the conversion rate during the energy storage process.

[0092] It should be noted that in addition to adopting the top driving form with the highest economy, the bottom driving form can also be adopted, that is, the driving mechanism is arranged in the bottom stacking yard, and the steering mechanism is arranged in the top stacking yard, so that the driving mechanism is installed on the low-lying terrain platform to realize bottom driving.

[0093] Or driving mechanisms are arranged in both the top stacking yard and the bottom stacking yard to form a form of simultaneous top driving and bottom driving, which can meet the lifting requirements of the carrier mechanism 4 and the energy storage blocks 5, and can be specifically set according to the actual situation.

[0094] In terms of the specific structure of the track bearing, the double-loop bearing mechanism includes two parallel upwardly inclined closed-loop load-bearing tracks 1, and the double-loop traction mechanism includes two parallel upwardly inclined closed-loop traction ropes 2. At least a part of the traction rope 2 surrounds the driving mechanism and the steering mechanism and runs continuously under the drive of the driving mechanism.

[0095] Through the two parallel upwardly inclined closed-loop load-bearing tracks 1, a double-track structure for providing a bearing effect is formed, which can realize the distributed bearing of the gravity energy storage blocks 5. Compared with the single-track structure, the load intensity is reduced, the risk of single-point overload is avoided, and the safety margin of the system operation is improved.

[0096] Meanwhile, the two parallel upwardly inclined and closed-loop surrounding traction ropes 2 can operate continuously and dynamically driven by the driving mechanism, forming an operating structure for providing a traction effect. Combining with the carrier mechanism 4 that can operate in a closed loop along the load-bearing track 1, and connecting the carrier mechanism 4 with the traction ropes 2, a continuous traction operating state of multiple carrier mechanisms 4 under the dual action of the load-bearing track 1 and the traction ropes 2 can be formed.

[0097] On the one hand, it can achieve multi-point distributed loading of the carrier mechanism 4 on the load-bearing track 1 and synchronous traction under the action of the traction ropes 2. On the other hand, it can make the energy storage block 5 form a continuous carrier operating state.

[0098] By lifting and transporting the energy storage block 5 through the continuously traction-operating carrier mechanism 4, a steady-state continuous gravity flow can be formed during the energy storage stage, and at the same time, a steady-state continuous energy flow can be formed through the release and conversion of the gravity flow during the discharge stage.

[0099] The continuous traction operating state formed by multiple carrier mechanisms 4 can increase the maximum carrying capacity of the system, ensure the high-efficiency operation of the energy storage and power generation states, and achieve high-power storage / discharge of electric energy.

[0100] The mutual cooperation of the load-bearing track 1 and the traction ropes 2 can form a separated setting form of loading and traction. When the energy storage block 5 is being carried, by using the load-bearing track 1 to bear the weight of the carrier mechanism 4 and the energy storage block 5, the carrier mechanism 4 and the energy storage block 5 are towed along the track by the traction ropes 2.

[0101] Through the above-mentioned functional decoupling of loading and traction, the stress concentration problem of the traditional single-cable load-bearing traction system can be solved, and the mutual interference between loading and traction can be reduced in the form of independent structures cooperating with each other, ensuring the stable and reliable loading effect and traction effect.

[0102] In order to enable the carrier mechanism 4 to maintain a cooperative relationship with both the load-bearing track 1 and the traction ropes 2 at the same time, the traction ropes 2 are arranged inside the load-bearing track 1, the carrier mechanism 4 is connected between the two traction ropes 2, and at the same time, both sides of the carrier mechanism 4 cross over the traction ropes 2 and run and are assembled on the load-bearing track 1.

[0103] In addition to arranging the traction ropes 2 inside the load-bearing track 1, the traction ropes 2 can also be arranged outside the load-bearing track 1, making the carrier mechanism 4 slidably arranged between the load-bearing tracks 1, and both sides of the carrier mechanism 4 cross over the load-bearing track 1 and are connected and assembled with the traction ropes 2, enabling the carrier mechanism 4 to drive the energy storage block 5 to lift under the dual effects of loading and traction.

[0104] Based on the structural form where the closed-loop circulation of the load-bearing track 1 and the closed-loop winding of the traction rope 2 are arranged in parallel, the closed-loop plane of the load-bearing track 1 and the closed-loop plane of the traction rope 2 are parallel to each other, and at the same time form a stable and reliable running load-bearing surface and traction surface for the relative carrier mechanism 4, minimizing the risk of the carrier mechanism 4 shifting and ensuring running stability.

[0105] From the perspective of the parallel arrangement of the load-bearing tracks 1, the two load-bearing tracks 1 are mirror-symmetrical with respect to the traction rope 2. Each load-bearing track 1 includes an upper and a lower corresponding upward branch track and downward branch track respectively;

[0106] The upward branch track and the downward branch track each include an inclined section, a horizontal guiding section, an arc-shaped turning section, and an end turning section that are oppositely arranged, and at least a part of the branch tracks overlap and are joined at the end turning section.

[0107] In combination with the attached drawings, each load-bearing track 1 on both sides is not an integral closed structure assembled by docking the upward branch track and the downward branch track, but rather jointly forms the closed-loop circulation space of each load-bearing track 1 through an overlapping form.

[0108] Specifically, after the top of the upward branch track 11 is guided by the horizontal guiding section 1b and turned by the arc-shaped turning section 1c, it stops extending after an end turning section 1d of a certain distance, and overlaps and is joined with the horizontal guiding section 1b at the top of the downward branch track 12 up and down, thereby forming a successive connection after the turning of the carrier mechanism 4 in the gap at the overlapping and joining part.

[0109] Through the above complex overlapping relationship, a closed-loop circulation track is formed, ensuring that the carrier mechanism 4 always runs on the load-bearing track 1, avoiding the risk of derailment and ensuring stability and reliability.

[0110] From the perspective of the parallel arrangement of the traction ropes 2, the two traction ropes 2 each include a single closed-loop annular traction rope 2. A section of the annular traction rope 2 surrounds and passes through the driving wheel 3, and different sections of the annular traction rope 2 corresponding to the load-bearing track 1 are in the same plane, forming the closed-loop plane of the traction rope 2.

[0111] Preferably, the annular traction ropes 2 are vertically arranged in the same plane. Combining their winding between the driving mechanism and the steering mechanism, a relatively stable driving and traction surface parallel to the load-bearing track 1 can be maintained.

[0112] From the perspective of the connection between the traction rope 2 and the carrier mechanism 4, the carrier mechanism 4 is connected to the traction rope 2 through a rope connection mechanism 8 on the side. The rope connection mechanism 8 is connected and installed on the carrier mechanism 4 and fixedly connected to the traction rope 2.

[0113] The carrier mechanism 4 includes a mounting plate 45 for mounting the rope connection mechanism 8. At the same time, in order to consider the fixed connection relationship between the carrier mechanism 4 and the towing rope 2 during turning and reversing, the rope connection mechanism 8 is mounted on the mounting plate 45 of the carrier mechanism 4 through a slewing bearing 81.

[0114] Combined Figure 9 , specifically, the rope connection mechanism 8 includes a fixing device fixed to the towing rope 2, such as the jaw structure shown in the attached drawing. The fixing device includes a fixed jaw with a jaw 82, and the towing rope 2 is fixedly installed in the jaw 82.

[0115] It should be noted that in this application, the specific form of the rope connection mechanism 8 is not limited. In addition to the above-mentioned jaw type, it can also be other forms such as a connecting cable, as long as the fixed connection relationship between the carrier mechanism 4 and the towing rope 2 is satisfied, which will not be elaborated here.

[0116] In addition to the considerations during the turning of the towing rope 2 described above, the key consideration also includes the limit guidance of the carrier mechanism 4 during turning, so that the carrier mechanism 4 can perform effective and stable turning and reversing along the turning part of the load-bearing track 1.

[0117] Slewing guide rails 9 are respectively arranged at the positions of the load-bearing track 1 where the driving mechanism and the steering mechanism are located, and the turning and reversing are stably guided specifically through the slewing guide rails 9.

[0118] The slewing guide rail 9 includes a guiding rail section 91 and a turning rail section 92 that are slewing-connected. The guiding rail section 91 and the turning rail section 92 respectively include a horizontal rail and an arc-shaped rail that are separated from the load-bearing track 1 at intervals.

[0119] Specifically, the horizontal rail and the arc-shaped rail are arranged outside the load-bearing track 1 and maintain a position relationship of being exactly opposite to the center of the track surface of the load-bearing track 1. The starting end of the guiding rail section 91 is arranged above the horizontal guiding section 1b of the load-bearing track 1 and is incorporated into one of the branch tracks after the turning of the turning rail section 92, that is, the arc-shaped rail. Taking the attached drawing as an example, the guiding rail section 91 located above the top of the upward branch track 11 is incorporated into the downward branch track 12 after turning, ensuring a relatively reliable turning connection for the carrier mechanism 4.

[0120] The horizontal guiding section 1b of the other branch track is interrupted at the merging part of the slewing guide rail 9. Similarly, referring to the attached drawing, it can be seen that the upward branch track 11 is interrupted after passing through the arc-shaped turning section 1c and then undergoing an end turning section 1d of a certain length, and at the same time, the cross-over and overlap of the two branch tracks described above are completed.

[0121] Through the mutual cooperation relationship between different branch tracks and different turning guide rails 9, seamless connection of the carrier mechanism 4 can be formed at the turning parts of the driving mechanism and the steering mechanism, maintaining its stable operation on the closed-loop bearing track 1, and providing guarantee for the continuous operation of the carrier mechanism 4 to a great extent.

[0122] In this application, the angle between the inclined section 1a of the bearing track 1 and the horizontal plane is 15 - 75°, which can be actually set according to the specific mountain slope terrain.

[0123] At the same time, support columns 10 are arranged on the outer side of the bearing track 1, and leg supports 10a are arranged at the top and middle of the support columns 10, which is convenient for providing an installation foundation for the upward branch track 11 and the downward branch track 12.

[0124] The structural basis of the orbital gravity flow energy storage system in this application is realized based on the bearing effect of the orbit and the traction effect of the cable.

[0125] On this basis, the driving mechanism includes two different specific setting forms: wheel drive and drum drive. Correspondingly, the steering mechanism includes different forms of wheel type and drum type, enabling the carrier mechanism 4 to continuously run along the closed-loop track of the bearing track 1. At the same time, based on the different forms of the driving mechanism and the steering mechanism, the carrier mechanism 4 can be turned over and redirected at the corresponding specific forms through the turning parts, and the structure of the carrier mechanism 4 also includes corresponding different forms.

[0126] To more conveniently describe the orbital gravity flow energy storage system in this application, the above two different orbital gravity flow energy storage systems are separately described in the form of two embodiments.

[0127] Embodiment 1

[0128] See Figures 1 - 4 , the orbital gravity flow energy storage system in this embodiment is specifically a double-wheel drive orbital gravity flow energy storage system. The driving mechanism includes a double-wheel drive mechanism, and the double-wheel drive mechanism includes two driving wheels 3 arranged in parallel, and a horizontal transmission shaft 31. The two driving wheels 3 are vertically connected to the horizontal transmission shaft 31 and arranged symmetrically.

[0129] The two driving wheels 3 arranged in parallel and vertically installed can be arranged at intervals along the axial direction of the horizontal transmission shaft 31 in a mirror-symmetrical arrangement. The interval space between the two driving wheels 3 constitutes the traction moving space of the carrier mechanism 4 and the turning and redirecting space at the position of the driving wheels 3.

[0130] It is used to enable the towing rope 2 to be wound around it, and at the same time enable the carrying mechanism 4 to pass through the gap between the two driving wheels 3. At least a part of the towing rope 2 is wound around the driving wheel 3. Combining the friction force between the towing rope 2 and the driving wheel 3, the driving wheel 3 drives the towing rope 2 to move stably and continuously during the rotation operation, ensuring the reliable stability of the continuous gravity flow and energy flow.

[0131] The vertically installed driving wheel 3, compared with the traditional horizontal wheel form, can reduce the floor space, break through the terrain slope limit, has simpler requirements for the terrain, is convenient to install in more slope sections, can be deployed in a variety of terrains, and is especially suitable for complex geological environments such as mountains and hills.

[0132] On this basis, it is beneficial to form a driving and towing surface that cooperates with the towing rope 2, ensuring that the towing rope 2 moves continuously on the shaped winding surface.

[0133] In one implementation form, the electric power generation mechanism 6 includes an electric generator, and the electric generator has both driving and discharging functions.

[0134] Based on the cooperation angle between the driving wheel 3 and the two driving and towing surfaces, the driving wheel 3 includes a first active driving wheel 3a and a second active driving wheel 3b, which are connected by a horizontal transmission shaft 31. The two driving wheels 3 rotate synchronously, and the horizontal transmission shaft 31 performs transmission.

[0135] By connecting the output shaft of the electric generator to one end of the horizontal transmission shaft 31 through a coupling, during the energy storage stage, the driving function can drive the driving wheel 3 to rotate actively, and at the same time, the energy storage block 5 located at the bottom of the energy storage system is lifted through the carrying mechanism 4 to form a continuous gravity flow.

[0136] At the same time, during the discharging stage, the continuously descending energy storage block 5 drives the driving wheel 3 to rotate passively, so that during the descending process of the lifted energy storage block 5, the potential energy form of gravity energy storage is converted into electrical energy that the electric power generation mechanism 6 can generate in the discharging function to form a continuous energy flow.

[0137] In another specific implementation form, the two driving wheels 3 can also be independently driven respectively, and the two driving wheels 3 are arranged in mirror symmetry. The electric power generation mechanism 6 includes a generator and a motor. The generator and the motor respectively include output shafts, and the output shafts are respectively connected to the horizontal transmission shafts 31 of the independently installed driving wheels 3 through couplings, and the above technical effects can also be achieved.

[0138] In this application, the specific form of the electric power generation mechanism 6 is not limited. When independently controlling the drive wheels 3, one of the drive wheels 3 is connected to the electric motor, and the other drive wheel 3 is connected to the generator. Through the clutch control of different drive wheels 3 with the electric motor or the generator during the energy storage and discharge stages, on the premise that the two drive wheels 3 maintain a transmission connection, the electric motor and the generator perform different functions.

[0139] From the perspective of constructing the drive traction surface described above, the two traction ropes 2 are respectively wound around the corresponding drive wheels 3, and are used to drive the traction ropes 2 to run by the drive wheels 3 through the friction between the wound and contacted traction ropes 2 and the drive wheels 3, or to drive the drive wheels 3 by the traction ropes 2 to achieve the traction operation during the energy storage and discharge stages.

[0140] The double-wheel drive mechanism is installed through the drive installation mechanism. The drive installation mechanism includes relatively erected drive supports 7 and an energy storage device mounting seat. The horizontal transmission shaft 31 and the drive wheels 3 are installed between the drive supports 7, and the motor-generator is installed on the energy storage device mounting seat (not shown in the figure).

[0141] Similarly, when setting the electric motor and the generator respectively, the motor mounting seat and the generator mounting seat can be set respectively to ensure the effective installation of different functional devices.

[0142] In this embodiment, in order to cooperate with the turning and reversing of the carrying mechanism 4 at the turning parts of the carrying track 1 and the traction rope 2, preferably, in order to maintain the stability and integrity of the running bearing surface and the drive traction surface, the steering mechanism also includes two vertically installed steering wheels 32 arranged in parallel. The steering wheels 32 have the same structure as the drive wheels 3, and the wheel surfaces of the steering wheels 32 and the drive wheels 3 are arranged on the same plane. Preferably, the wheel surfaces of the steering wheels 32 and the drive wheels 3 are arranged on the same vertical plane. Each carrying track 1 and each traction rope 2 correspond to a set of drive wheels 3 and steering wheels 32, and the drive traction surface is formed between a set of drive wheels 3 and steering wheels 32.

[0143] From the perspective of connection and installation, the connection and installation structures of the two steering wheels 32 and the drive wheels 3 are the same. They are installed through the provided steering supports and are coaxially connected through necessary connecting shafts to ensure that the two steering wheels 32 maintain a relatively synchronous rotation relationship.

[0144] Each traction rope 2 is closed and wound between the corresponding drive wheels 3 and steering wheels 32 in a group to form the drive traction surface corresponding to each traction rope 2.

[0145] In order to maintain the stable and reliable cooperation of the towing rope 2 on the driving wheel 3 and the steering wheel 32, wheel grooves 33 are respectively provided on the wheel surfaces of the driving wheel 3 and the steering wheel 32. Preferably, the positions of the wheel grooves 33 on the driving wheel 3 and the steering wheel 32 are the same and correspond to each other vertically.

[0146] The towing rope 2 is tightly wound around the wheel groove 33. The wheel groove 33 specifically plays a role in limiting and matching, keeping the plane where the towing rope 2 is located parallel to the layout plane of the bearing track 1.

[0147] During operation, the towing rope 2 specifically moves in a circular motion under the frictional force when it is in a tightly pressed state with the driving wheel 3 and the steering wheel 32. In order to enhance the frictional force, ensure synchronous operation and prevent slipping, necessary anti-slip structures are provided in the wheel groove 33 to ensure the continuous and stable circular motion of the towing rope 2.

[0148] At the same time, in order to ensure the tension of the towing rope 2, a tensioning mechanism is provided at the rear side of the steering wheel 32. As shown in the figure, it is a lead screw type, keeping the towing rope 2 in a tensioned state to ensure its stable and reliable operation during operation.

[0149] The energy storage block 5 in the present utility model is specifically lifted and transported by the continuous traction operation of the transport mechanism 4. Based on this basic form of energy storage and discharge, the transport mechanism 4 includes transport vehicle frames 41 located on both sides and corresponding to the bearing track 1. The transport vehicle frames 41 can run continuously along the bearing track 1.

[0150] At the same time, in order to keep the two transport vehicle frames 41 lift and run synchronously along the extension direction of the bearing track 1, a connecting cross beam 42 is connected between the transport vehicle frames 41. The connecting cross beam 42 connects the two transport vehicle frames 41 into an integral structure. Wheels 43 are respectively installed on the transport vehicle frames 41 on each bearing track 1. The wheels 43 can run along the bearing track 1. Specifically, there is a certain limiting and matching relationship between the wheels 43 and the bearing track 1 in terms of structure. Through the linear contact friction between the wheels 43 and the bearing track 1, it runs dynamically under the drive of the towing rope 2, and combines with the linear contact frictional force to convert the wheels 43 into running relative to the bearing track 1 during operation.

[0151] Based on the closed-loop circulation structure form of the bearing track 1, the transport vehicle frame 41 runs around the closed loop of the bearing track 1 under the traction of the towing rope 2. Especially, it flips at the positions of the driving wheel 3 at the top and the steering wheel 32 at the bottom to complete relative continuous sliding and rolling movement.

[0152] Based on the passing space for the transport mechanism 4 formed by the two driving wheels 3 and the two steering wheels 32 arranged at intervals, the energy storage block 5 in this embodiment is specifically installed in a hanging form on the transport mechanism 4.

[0153] Specifically, load-carrying cantilevers 44 for hoisting energy storage blocks 5 are installed at intervals on the connecting cross beam 42, and the load-carrying load is evenly distributed through the load-carrying cantilevers 44 installed at intervals. Further, both ends of the connecting cross beam 42 are respectively connected to the transport vehicle frame 41, so that the load-carrying load is transmitted to the bearing track 1 through the connecting cross beam 42 and the transport vehicle frame 41. Preferably, a limiting portion for limiting the installation of the load-carrying cantilever 44 is provided on the connecting cross beam 42 to prevent the load-carrying cantilever 44 from laterally shifting when hoisting the energy storage block 5.

[0154] Further, based on the specific structure of the transport vehicle frame 41 in this embodiment and the load-carrying transport of the energy storage block 5 on the load-carrying cantilever 44, the energy storage block 5 in this embodiment is detachably connected to the bottom of the load-carrying cantilever 44. Through this setting method, the mounting efficiency of the energy storage block 5 on the transport mechanism 4 is ensured.

[0155] For the transport vehicle frame 41 to turn over and change direction in the spaced part between the drive wheels 3 and the steering wheels 32, it is necessary to maintain the requirement for the load-carrying cantilever 44 to be rotatable on the connecting cross beam 42.

[0156] Based on this, the load-carrying cantilever 44 is rotatably connected to the connecting cross beam 42. In this setting form, the connecting cross beam 42 passes through the through-ring at the root of the load-carrying cantilever 44, and the through-ring is installed at the position of the limiting portion of the connecting cross beam 42, so that the load-carrying cantilever 44 remains in a drooping state when the transport vehicle frame 41 turns over and changes direction.

[0157] Alternatively, the connecting cross beam 42 is rotatably connected to the transport vehicle frame 41. In this setting form, by setting bearings at the root of the connecting cross beam 42, the load-carrying cantilever 44 and the connecting cross beam 42 as a whole can maintain their original postures when the transport vehicle frame 41 turns over and changes direction.

[0158] Starting from different stages of energy storage and discharging, in order to facilitate the lifting of the energy storage block 5, transfer devices are provided in both the top stacking yard and the bottom stacking yard, and the energy storage block 5 is reciprocally transported between the stacking yard and the bearing track 1 through the transfer devices.

[0159] Embodiment 2

[0160] See Figures 5 - 8 , the orbital gravity flow energy storage system in this embodiment is specifically a drum-driven orbital gravity flow energy storage system, and the driving mechanism includes a drum driving mechanism. The drum driving mechanism includes a laterally installed driving drum 30 and a horizontally installed drum transmission shaft 301.

[0161] The driving drum 30 is used to enable the traction rope 2 to be wound around it, and at the same time, it can allow the carrying mechanism 4 to turn through the periphery of the driving drum 30. At least a part of the traction rope 2 is wound around the driving drum 30. Combining with the friction force between the traction rope 2 and the driving drum 30, the driving drum 30 drives the traction rope 2 to move stably and continuously during the rotation operation, ensuring the reliable stability of the continuous gravity flow and energy flow.

[0162] The horizontally installed driving drum 30, compared with the traditional horizontal wheel form, can also reduce the occupied space, break through the terrain slope limit, and achieve the same technical advantages as the vertically installed driving wheel 3.

[0163] By winding the traction rope 2 around the driving drum 30, it is also beneficial to form a driving traction surface that matches the traction rope 2, ensuring that the traction rope 2 moves continuously on the shaped winding surface.

[0164] In one implementation form, the electric power generation mechanism 6 includes an electric generator, and the electric generator has both driving and discharging functions. By connecting the output shaft of the electric generator to one end of the drum transmission shaft 301 through a coupling, during the energy storage stage, the driving function can be used to drive the driving drum 30 to rotate actively, and at the same time, the energy storage block 5 located at the bottom of the energy storage system is lifted through the carrying mechanism 4 to form a continuous gravity flow.

[0165] At the same time, during the discharging stage, the continuously descending energy storage block 5 drives the driving drum 30 to rotate passively, so that during the descent of the lifted energy storage block 5, the potential energy form of gravity energy storage is converted into electrical energy that the electric power generation mechanism 6 can generate through the discharging function to form a continuous energy flow.

[0166] In another specific implementation form, since the driving drum 30 is an integral driving structure and cannot be independently controlled separately, the electric power generation mechanism 6 includes a generator and a motor. The generator and the motor each include an output shaft. By connecting the output shafts of the generator and the motor to both ends of the drum transmission shaft 301 through couplings respectively, through the clutch control of the drum transmission shaft 301 and the motor or the generator during the energy storage and discharging stages, the motor and the generator can perform different functions.

[0167] From the perspective of constructing the driving traction surface described above, two traction ropes 2 are respectively wound around the annular barrel wall of the driving drum 30, and are used to drive the traction rope 2 to operate by the driving drum 30 through the friction force between the wound and contacting traction rope 2 and the driving drum 30, or to drive the driving drum 30 to operate by the traction rope 2, realizing the traction operation during the energy storage and discharging stages.

[0168] The drum driving mechanism is installed by driving the installation mechanism. The driving installation mechanism includes relatively erected driving supports 7 and an energy storage device mounting seat. A drum transmission shaft 301 and a driving drum 30 are installed between the driving supports 7, and an electric generator is installed on the energy storage device mounting seat (not shown in the figure).

[0169] The commutation mechanism in this embodiment includes a horizontally installed steering drum 302. The steering drum 302 has the same structure as the driving drum 30, and the two end faces of the steering drum 302 and the two end faces of the driving drum 30 are respectively arranged in the same plane. By winding the towing rope 2 around the same parts of the steering drum 302 and the driving drum 30, it is beneficial to form corresponding driving traction surfaces on the two towing ropes 2.

[0170] The connection and installation structure of the steering drum 302 and the driving drum 30 is the same, and they are installed through the provided steering supports.

[0171] Each towing rope 2 is closed and wound between the corresponding driving drum 30 and steering drum 302 in a group, forming the driving traction surface corresponding to each towing rope 2.

[0172] In order to maintain the stable and reliable cooperation of the towing rope 2 on the driving drum 30 and the steering drum 302, friction linings 304 are respectively arranged on the drum surfaces of the driving drum 30 and the steering drum 302. Preferably, the setting positions of the friction linings 304 on the driving drum 30 and the steering drum 302 are the same and correspond up and down.

[0173] In order to enable the two towing ropes 2 to be wound on the same driving drum 30 and steering drum 302, the friction linings 304 are arranged at intervals for the towing rope 2 to be pressed and wound on the friction linings 304. The friction linings 304 specifically play a role of limiting and matching. Rope grooves 303 are arranged on the friction linings 304, and the towing rope 2 is pressed and wound in the rope grooves 303, which can prevent the towing rope 2 from breaking away from the pressing restraint in the rope grooves 303 and keep the plane where the towing rope 2 is located parallel to the layout plane of the bearing track 1.

[0174] At the same time, the friction linings 304 are also provided with fixing devices that can fixedly connect them to the driving drum 30 and the steering drum 302, meeting the stable fixed connection state of the friction linings 304 on the driving drum 30 and the steering drum 302.

[0175] During operation, the towing rope 2 specifically moves in a winding manner under the frictional force when it is in a pressed state with the driving drum 30 and the steering drum 302. In order to enhance the frictional force to ensure synchronous operation and prevent slipping, the friction linings 304 can reliably ensure the continuous and stable winding movement of the towing rope 2. The tensioning mechanism of the towing rope 2 has the same structure as that in Embodiment 1 and will not be elaborated here.

[0176] Based on the structures of the driving reel 30 and the steering reel 302 in this embodiment, the carrying mechanism 4 includes carrying the energy storage blocks 5 in a backpack style and an inverted hanging style.

[0177] Specifically, the carrying mechanism 4 includes a load vehicle frame 46 that straddles the carrying track 1, and the load vehicle frame 46 can continuously run along the carrying track 1.

[0178] A connecting rod 47 for installing the energy storage block 5 is provided on the load vehicle frame 46. By detachably plugging and connecting the energy storage block 5 to the connecting rod 47, the backpacking and inverted hanging of the energy storage block 5 during the running of the load vehicle frame 46 are realized.

[0179] Wheels 43 are respectively installed on both sides of the load vehicle frame 46 at the parts corresponding to each carrying track 1. The wheels 43 can run along the carrying track 1. Specifically, there is a certain limiting cooperation relationship between the wheels 43 and the carrying track 1 in terms of structure. Through the linear contact friction between the wheels 43 and the carrying track 1, it runs dynamically under the drive of the traction rope 2, and combined with the linear contact friction force, the wheels 43 are converted into running relative to the carrying track 1 during the running process.

[0180] Based on the closed-loop circulating structural form of the carrying track 1, the load vehicle frame 46 runs in a closed loop around the carrying track 1 under the traction of the traction rope 2, especially for turning over and changing directions at the parts of the driving reel 30 at the top and the steering reel 302 at the bottom, completing relatively continuous sliding and rolling movements.

[0181] Through the orbital gravity flow energy storage system in this application, a continuous and steady gravity flow and energy flow can be constructed. On the premise of improving the carrying capacity, the high-efficiency operation of the energy storage and power generation states is ensured, and the large-power storage / discharge of electric energy can be realized.

[0182] During the operation process, it specifically includes an energy storage stage and a discharge stage.

[0183] In the energy storage stage, the energy storage blocks 5 at the stacking yard at the bottom of the energy storage system are continuously carried from bottom to top through the orbital gravity flow energy storage system, and a continuous gravity flow is formed by the lifting of the energy storage blocks 5. During the energy storage and power storage process, the electric power generation mechanism 6 converts electric energy into kinetic energy, and the kinetic energy is smoothly transmitted to the driving mechanism, driving the driving mechanism to rotate in a clockwise direction.

[0184] The driving mechanism drives the traction rope 2 to start running around through the friction between its surface and the traction rope 2. At the same time, in combination with the cooperation between the traction rope 2 and the steering mechanism, the steering mechanism is driven to rotate in a clockwise direction.

[0185] With the continuous movement of the towing rope 2, the carrying mechanism 4 clamped thereon is towed to slide and roll along the preset carrying track 1. The carrying mechanism 4 carries the energy storage blocks 5 located in the bottom stacking yard, causing them to move upward with the carrying mechanism 4. When approaching the top stacking yard, the energy storage blocks 5 are disengaged from the carrying mechanism 4, and the energy storage blocks 5 are sent into the top stacking yard and quickly transported away by the transfer equipment for storage. The carrying mechanism 4 then enters an arc-shaped track. Subsequently, the carrying mechanism 4 continuously travels along the circular track and finally returns to the horizontal track again, ready to start a new round of energy storage block 5 transportation tasks.

[0186] During the discharging stage, the energy storage blocks 5 located in the top stacking yard of the energy storage system are continuously carried from top to bottom through the orbital gravity flow energy storage system, and a continuous energy flow is formed by the fall of the energy storage blocks 5. During the discharging process, the energy storage blocks 5 located in the top stacking yard are transferred to the carrying track 1 by the transfer equipment.

[0187] The energy storage blocks 5 are fixed to the carrying mechanism 4. Subsequently, under the action of gravity, the energy storage blocks 5 drive the carrying mechanism 4 to slide downward along the carrying track 1 together, releasing the stored energy. The carrying mechanism 4 drives the towing rope 2 to start moving through its clamped connection with the towing rope 2.

[0188] The towing rope 2 transfers the movement to the driving mechanism and the commutation mechanism through the friction force between it and the driving mechanism and the commutation mechanism, driving them to rotate counterclockwise. The rotation of the driving mechanism is then transmitted to the electric power generation mechanism 6. The electric power generation mechanism 6 enters the power generation mode, converts kinetic energy into electric energy, and inputs it into the power grid.

[0189] When approaching the bottom stacking yard, the energy storage blocks 5 are disengaged from the carrying mechanism 4, and the energy storage blocks 5 are sent into the bottom stacking yard and transported away by the transfer equipment for storage. The carrying mechanism 4 then continues to slide and roll along the carrying track 1. Finally, the carrying mechanism 4 returns to the horizontal track, ready to start a new round of energy storage block 5 transportation tasks.

[0190] The carrying mechanism 4 is connected to the towing rope 2 at equal intervals, which can provide a balanced and continuous gravity flow. At the same time, the energy storage blocks 5 can correspond to the carrying mechanism 4 one by one or at intervals. The traveling speed of the carrying mechanism 4 following the towing rope 2 is adjustable, so as to realize the adjustable gravity flow. Thus, the energy flow can be adjusted as needed, and then the functions of "slow charge and fast discharge" or "charge and discharge as needed" can be realized.

[0191] At the same time, the wheel-driven orbital gravity flow energy storage system can also be designed and manufactured economically and reliably in a modular manner, and can be arranged in parallel multi-pieces and / or stacked up and down according to the hillside terrain to achieve a larger-scale energy storage.

[0192] Taking one specific example to illustrate the energy storage system in this application. When generating electricity, the energy storage block 5 has a main body made of reinforced concrete, with a density of 2,500 kg / m 3 . Its shape is a cuboid with a length of 1.5 meters × a width of 1.5 meters × a height of 1.0 meter, and it weighs 5.625 tons.

[0193] Assuming the vertical height difference of the hillside is 500 meters, lifting a single energy storage block 5 from the bottom of the mountain to the top of the mountain can store energy E = mgh = 5.625×10 3 kg×9.8 m / s 2 ×500 m = 27,562,500 J ≈ 7.66 kWh.

[0194] Referring to the operating speeds of equipment such as passenger ropeways, freight ropeways, and mine hoists, if at a speed of 8 meters per second, it can travel 28.8 kilometers per hour. Assuming the energy storage blocks 5 are arranged at intervals of 10 meters, then 2,880 energy storage blocks 5 can be transported to the top of the mountain per hour, and the energy that can be stored per hour is 2,880 × 7.66 kWh / block = 22,050.0 kW·h ≈ 22.0 MWh.

[0195] To improve the power generation capacity, multiple sets of energy storage systems can be arranged side by side in multiple rows and / or stacked vertically on the hillside terrain. Also, the speed of the traction rope 2 can be increased or the spacing of the energy storage blocks 5 can be reduced to expand the energy storage scale.

[0196] It should be noted that, without conflict, the features in the embodiments of this application can be combined with each other.

[0197] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A track-type gravity flow energy storage system, characterized in that: include: A top stacking yard and a bottom stacking yard, wherein a double-circulation bearing mechanism, a double-circulation traction mechanism, a driving mechanism and a steering mechanism are arranged between the top stacking yard and the bottom stacking yard; The double-loop bearing mechanism and the double-loop traction mechanism respectively include a bearing rail and a traction rope arranged in pairs; The carrying track comprises a closed-circuit track, and the traction rope is closed and looped between the driving mechanism and the steering mechanism and runs continuously under the drive of the driving mechanism; A plurality of carrying mechanisms that can run along the closed loop are arranged between the carrying rails, and the traction rope is connected to the carrying mechanism so that the traction rope can drive the carrying mechanism to run continuously, and the carrying mechanism is used to carry the energy storage block as the energy storage carrier; The driving mechanism is connected to an electric generator mechanism, which continuously lifts the energy storage blocks located at the bottom storage yard to form a continuous gravity flow, and continuously lowers the energy storage blocks located at the top storage yard to convert the gravitational potential energy into electrical energy of the electric generator mechanism to form a continuous energy flow.

2. The rail-type gravity flow energy storage system according to claim 1, characterized in that: The driving mechanism is arranged at the top stacking yard, and the steering mechanism is arranged at the bottom stacking yard; Alternatively, the driving mechanism is arranged at the bottom stacking yard, and the steering mechanism is arranged at the top stacking yard; Alternatively, both the top stacking yard and the bottom stacking yard are provided with the driving mechanism.

3. The track-type gravity flow energy storage system according to claim 1, characterized in that: The double-circulation carrying mechanism comprises two parallel upward inclined closed-circuit carrying rails, and the double-circulation traction mechanism comprises two parallel upward inclined closed loop traction ropes, at least a portion of which is looped around the driving mechanism and the steering mechanism.

4. The track-type gravity flow energy storage system according to claim 3, characterized in that: The traction rope is arranged on the inner side or the outer side of the carrying track, and the carrying mechanism is connected between the two traction ropes; The closed-loop plane of the load-bearing track and the closed-loop plane of the traction rope are parallel to each other.

5. The track-type gravity flow energy storage system according to claim 3, characterized in that: The two bearing rails are mirror-symmetrical with respect to the traction rope, and each bearing rail comprises an upper branch rail and a lower branch rail corresponding to each other; The upward branch track and the downward branch track respectively include an inclined section, a horizontal guide section, an arc-shaped turning section and an end turning section that are arranged opposite to each other, and at least a part of the branch track is cross-stacked at the end turning section.

6. The track-type gravity flow energy storage system according to claim 5, characterized in that: The two traction ropes respectively include a single closed-loop annular traction rope, and the annular traction ropes respectively surround the driving mechanism and the steering mechanism, and the different sections corresponding to the annular traction ropes and the bearing rails are on the same plane, forming a surrounding plane of the traction ropes.

7. The track-type gravity flow energy storage system according to claim 5, characterized in that: The carrying mechanism is connected to the traction rope via a rope connection mechanism, the rope connection mechanism is connected to the carrying mechanism and fixedly connected to the traction rope, the carrying mechanism comprises a mounting plate for mounting the rope connection mechanism, and the rope connection mechanism is mounted on the mounting plate via a slewing bearing.

8. The track-type gravity flow energy storage system according to claim 7, characterized in that: The rope connection mechanism comprises a fixing device fixed on the traction rope, wherein the fixing device comprises a fixing claw with a jaw, and the traction rope is fixedly installed in the jaw.

9. The track-type gravity flow energy storage system according to claim 7, characterized in that: A rotary guide rail is provided at the driving mechanism and the steering mechanism, and the rotary guide rail includes a guide rail segment and a steering rail segment that are rotatably connected, and the guide rail segment and the steering rail segment respectively include a horizontal rail and an arc rail that are separated from the bearing rail; The starting end of the guide rail segment is arranged above the horizontal guide segment and merges into one of the branch tracks after the turning rail segment rotates, and the end turning segment of the other branch track interrupts the track at the merging position of the rotating guide rail.

10. The rail-type gravity flow energy storage system according to claim 1, characterized in that: The driving mechanism comprises a dual-wheel driving mechanism, the dual-wheel driving mechanism comprises two driving wheels arranged in parallel, and a horizontal transmission shaft, the two driving wheels are vertically connected to the horizontal transmission shaft and are arranged in mirror symmetry; The electric power generation mechanism includes an electric generator, and the electric generator includes an output shaft, and the output shaft is connected to one end of the horizontal transmission shaft through a coupling; Alternatively, the electric generator mechanism comprises a generator and a motor, the two driving wheels are driven independently, the generator and the motor respectively comprise output shafts, and the output shafts are respectively connected to the horizontal transmission shaft via couplings; The two traction ropes are respectively wrapped around the corresponding driving wheels, so that the driving wheels drive the traction ropes to run through the friction force of the wrapping contact, or the traction ropes drive the driving wheels to run.

11. The rail-type gravity flow energy storage system according to claim 10, characterized in that: The steering mechanism comprises two parallel and vertically mounted steering wheels, the steering wheels have the same structure as the driving wheels and the wheel surfaces of the steering wheels and the driving wheels are arranged on the same plane; Each of the traction ropes is closed and looped between the driving wheels and the steering wheels that correspond to each other in a group. Wheel grooves are respectively arranged on the wheel surfaces of the driving wheels and the steering wheels, and the traction ropes are compressed and looped in the wheel grooves.

12. The rail-type gravity flow energy storage system according to claim 10, characterized in that: The transport mechanism comprises transport frames located on both sides and arranged corresponding to the carrying rails, and a connecting crossbeam is connected between the transport frames; Wheels capable of running along the load-bearing track are respectively installed on the transport frame, and the transport frame moves in a closed loop around the load-bearing track under the traction of the traction rope; The connecting crossbeam is provided with a hanging cantilever at intervals, and the hanging cantilever is used to hang the energy storage block, and the two ends of the connecting crossbeam are respectively connected to the carrier frame, and the energy storage block is detachably connected to the bottom of the hanging cantilever; The hanging cantilever is rotatably connected to the connecting crossbeam, or the connecting crossbeam is rotatably connected to the carrying frame.

13. The track-type gravity flow energy storage system according to claim 1, characterized in that: The driving mechanism comprises a reel driving mechanism, and the reel driving mechanism comprises a transversely mounted driving reel and a horizontally mounted reel transmission shaft; The electric power generation mechanism includes an electric generator, and the electric generator includes an output shaft, and the output shaft is connected to one end of the drum transmission shaft through a coupling; Alternatively, the electric generator mechanism includes a generator and an electric motor, the generator and the electric motor each include an output shaft, and the output shaft is connected to both ends of the drum transmission shaft through a coupling; The two traction ropes are both wound around the driving drum, so as to enable the driving drum to drive the traction ropes to operate through the friction force of the winding contact, or enable the traction ropes to drive the driving drum to operate.

14. The rail-type gravity flow energy storage system according to claim 13, characterized in that: The steering mechanism comprises a steering drum installed transversely, the steering drum has the same structure as the driving drum and the end surface of the steering drum and the end surface of the driving drum are arranged on the same plane; Each of the traction ropes is closed and looped between the driving drum and the steering drum. Friction pads are respectively arranged on the drum surfaces of the driving drum and the steering drum. The friction pads are arranged at intervals to allow the traction rope to be compressed and looped, and the friction pads have rope grooves and a device for fixing to the driving drum or the steering drum.

15. The track-type gravity flow energy storage system according to claim 13, characterized in that: The transport mechanism comprises a load frame, and the load frame is provided with a connecting rod for mounting the energy storage block; The load frame is provided with wheels capable of running along the load-bearing track, and the load frame moves in a closed loop around the load-bearing track under the traction of the traction rope.

16. The rail-type gravity flow energy storage system according to claim 1, characterized in that: The carrying mechanism is equidistantly connected to the traction rope; The energy storage blocks correspond to the carrying mechanisms one by one, or the energy storage blocks correspond to the carrying mechanisms at intervals, and the travel speed of the carrying mechanisms following the traction rope is adjustable, thereby achieving adjustable gravity flow.

17. The rail-type gravity flow energy storage system according to claim 1, characterized in that: The track-type gravity flow energy storage system comprises a plurality of sets, and the plurality of sets of the track-type gravity flow energy storage system are arranged in multiple rows in parallel and / or stacked up and down on a hillside.

Images