A rail-mounted gravity energy storage transportation system

Abstract

This utility model discloses a track-type gravity energy storage and transportation system, comprising: a low-level storage yard, a high-level storage yard, a transport train, a circular track, a drive unit, a power generation unit, an energy storage medium, and a parking track; the circular track is configured as a ring; the high-level and / or low-level operating tracks are provided with loading and unloading sections; the parking track can be connected to the circular track, and the parking track is provided with a parking section located between the parking track inlet and the parking track outlet; the high-level and low-level storage yards are provided with an elevation difference, and at least a portion of the loading and unloading section, at least a portion of the stockpiling area, and at least a portion of the parking section are located within the same high-level or low-level storage yard. In this track-type gravity energy storage system, the circular track and the parking track are interconnected. In both the working mode and the parking mode, the loading and unloading section, stockpiling area, and parking section along the transport train's route are uniformly planned and set in the same area, eliminating the need for separate planning for each area and saving construction costs.

Description

Technical Field

[0001] This utility model relates to the field of gravity energy storage, specifically to a track-type gravity energy storage transportation system. Background Technology

[0002] In the global wave of energy structure transformation towards cleaner and lower-carbon energy, the rapid development of renewable energy is leading a profound energy revolution. However, renewable energy sources such as wind and solar power are characterized by significant intermittency and volatility, and their power generation is closely related to natural conditions, making it difficult to perfectly match grid load demand. This characteristic poses a severe challenge to the stable operation of the power system, making energy storage technology a key solution for balancing supply and demand and enhancing grid resilience. With the increasingly urgent global demand for clean energy and energy security, among various energy storage technologies, gravity storage has become a prominent emerging force in the energy storage field due to its unique advantages of being environmentally friendly and having a long lifespan.

[0003] The principle of gravity energy storage is as follows: when there is a surplus of electricity, the weight is lifted to store electrical energy (converting electrical energy into gravitational potential energy). When power generation is needed, the weight is lowered to release energy (converting potential energy into electrical energy). The basic principle of gravity energy storage is simple, but in terms of the lifting and lowering of the weight, different gravity energy storage schemes in the existing technology have adopted different implementation methods. In the existing track-type gravity energy storage system, multiple trains run in a loop on the track. When the system stops, how to place multiple trains at low cost is an urgent problem to be solved. Utility Model Content

[0004] This invention provides a rail-mounted gravity energy storage transportation system to solve the technical problem of how to park multiple trains at low cost in existing rail-mounted gravity energy storage systems.

[0005] A track-type gravity energy storage and transportation system includes: a low-level storage yard, a high-level storage yard, a transport train, a circular track, a drive unit, a power generation unit, and a parking track; The circular track includes an upward track, a high-level running track, a downward track, and a low-level running track connected in sequence. The transport train is configured to carry energy storage medium and run on the circular track. It passes through the upward track, high-level operating track, downward track, and low-level operating track in sequence along a single direction of travel. The transport train can be driven by the drive device to run along the upward track from the low-level stockpile to the high-level stockpile. The transport train can drive the power generation device to generate electricity when running along the downward track from the high-level stockpile to the low-level stockpile. The high-level operating track and / or the low-level operating track are provided with loading and unloading sections. When the transport train is located in the loading and unloading section, the energy storage medium can be transferred from the transport train to a stockpile area and / or from a stockpile area to the transport train. The parking track includes an inlet and an outlet, which are respectively connected to a circular track via turnouts. The parking track is provided with a parking section located between the inlet and the outlet. The high-level stockpile and the low-level stockpile are provided with an elevation difference, and at least a portion of the loading and unloading section, at least a portion of the stockpile area, and at least a portion of the parking section are located in the same high-level stockpile or low-level stockpile.

[0006] Furthermore, the high-level storage yard and / or low-level storage yard are provided with building structures, and the loading and unloading section, the stockpiling area, and the parking section are all located within the projection range of the building structures when projected vertically.

[0007] Furthermore, the energy storage medium is configured as an energy storage weight, and the energy storage weight is configured to be transferred from the transport train to the stockpiling area or from the stockpiling area to the transport train by a hoisting device. The hoisting device is equipped with a gripping component, and the loading and unloading sections and the stockpiling area are spaced apart along the loading and unloading movement direction of the gripping component.

[0008] Furthermore, along the direction of material handling and unloading, the material stacking area is located between the loading / unloading section and the parking section.

[0009] Furthermore, along the direction of material handling and unloading, the loading and unloading section is located between the stockpiling area and the parking section.

[0010] Furthermore, multiple parking tracks are provided along the direction of material loading and unloading of the gripper, and the hoisting device is located between the two parking sections.

[0011] Furthermore, the hoisting device is provided with a main frame that projects vertically. At least a portion of the loading and unloading section, at least a portion of the stacking area, and at least a portion of the parking section are located within the projection range of the main frame, and at least a portion of the stacking area overlaps with at least a portion of the parking section.

[0012] Furthermore, a stacking rack is provided within the main frame, and the stacking rack is provided with a support platform. The energy storage weight can be placed on the support platform, and at least a portion of the parking section is located below the support platform.

[0013] Furthermore, the parking tracks are provided in multiple sections, with the parking sections of the multiple parking tracks arranged in parallel.

[0014] Furthermore, the loading and unloading section is arranged in parallel with the parking section.

[0015] This utility model discloses a track-type gravity energy storage and transportation system where the circular track and parking track are interconnected. In the working mode, the transport train circulates on the circular track to store energy and / or generate electricity. When the parking mode is activated, the transport train enters the parking track from the circular track to stop. The loading and unloading section, stockpiling area, and parking section that need to be traversed in both working modes are uniformly planned and set in the same area, eliminating the need for separate planning of each area and saving construction costs. Furthermore, since the parking section and loading and unloading section are set in the same area, the transport train can quickly and conveniently reach the parking section, resulting in high parking efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the track-type gravity energy storage and transportation system of this utility model; Figure 2 This is a schematic diagram of one embodiment of the track-type gravity energy storage and transportation system of this utility model; Figure 3 This is a schematic diagram of one embodiment of the track-type gravity energy storage and transportation system of this utility model; Figure 4 This is a schematic diagram of one embodiment of the track-type gravity energy storage and transportation system of this utility model; Figure 5 This is a schematic diagram of one embodiment of the track-type gravity energy storage and transportation system of this utility model; Figure 6 This is a schematic diagram of one embodiment of the track-type gravity energy storage and transportation system of this utility model: Figure 7 for Figure 6 Enlarged view of a portion; Figure 8 A schematic diagram of the transport train structure in the track-type gravity energy storage transport system of this utility model; Figure 9 This utility model presents a schematic diagram of the drive device structure in a track-type gravity energy storage and transportation system. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] like Figure 1 As shown, this utility model discloses a track-type gravity energy storage and transportation system, comprising: a low-level storage yard 60, a high-level storage yard 70, a transport train 10, a circular track 20, a drive device 30, a power generation device 40, an energy storage medium 50, and a parking track 90.

[0025] The circular track 20 is configured as a closed loop, including an upward track (da section), a high-level running track (ab section), a downward track (bc section), and a low-level running track (cd section) connected in sequence. The transport train 10 is configured to run cyclically on the circular track 20. Along the direction of travel of the transport train 10, it passes through the upward track, the high-level running track, the downward track, and the low-level running track in sequence. The transport train 10 can be driven by the drive device 30 to run along the upward track from the low-level stockpile 60 to the high-level stockpile 70. The transport train 10 can drive the power generation device 40 to generate electricity when it runs along the downward track from the high-level stockpile 70 to the low-level stockpile 60. The high-level running track and / or the low-level running track are provided with loading and unloading sections 20a. When the transport train 10 is in the loading and unloading section 20a, the energy storage medium 50 can be transferred from the transport train 10 to the stockpile area 80 and / or from the stockpile area 80 to the transport train 10. The parking track 90 includes an inlet 91 and an outlet 92, which can be connected to the circular track 20 via a switch 1. The parking track 90 is provided with a parking section 90a, which is located between the inlet 91 and the outlet 92. The high-level stockpile 70 and the low-level stockpile 60 are provided with an elevation difference, and at least a part of the loading and unloading section 20a, at least a part of the stockpile area 80, and at least a part of the parking section 90a are located in the same high-level stockpile 70 or low-level stockpile 60. This utility model discloses a track-type gravity energy storage system with a working mode and a parking mode. In the working mode, multiple transport trains 10 run along the same direction of travel on a circular track 20 to circulate between a low-level storage yard and a high-level storage yard for energy storage and / or power generation. When the parking mode is activated, multiple transport trains enter the parking track from the circular track through the switch and park in the parking section.

[0026] This utility model discloses a track-type gravity energy storage system where the circular track and parking track are interconnected. In operating mode, the transport train enters the circular track from the parking track and travels on the circular track to store energy and / or generate electricity. When the parking mode is activated, the transport train enters the parking track from the circular track to stop. In both operating modes, the loading / unloading section, stockpiling area, and parking section traversed by the transport train are located within the same high-level or low-level stockpiling yard, realizing spatial sharing of parking, unloading, and stockpiling functions. This reduces the system's footprint, lowers civil engineering costs, and is suitable for space-constrained sites, improving space utilization efficiency. Furthermore, the parking track is independently set up yet connected to the circular track, allowing the transport train to detach from the circular track and enter the parking track for parking, avoiding potential safety hazards caused by the train remaining on the circular track for extended periods (such as accidental starting, train malfunction, or maintenance blocking the circular track). The transport train can selectively enter the circular track and parking track, facilitating train maintenance, repair, or adjustment of operating plans. Maintenance personnel can safely inspect and repair the train in the parking section without affecting the operation of other parts of the system, thus improving the system's reliability and operational efficiency. In one embodiment of this utility model, the transport train stops directly in the parking area without unloading materials. This configuration allows the system to generate electricity directly upon restarting without waiting for the loading process, thus improving the system's operating efficiency. In this utility model, there are multiple ways to connect the parking track 90 to the circular track 20 via the switch 1. In one embodiment, the parking track 90 is directly connected to the circular track 20 via the switch 1. In another embodiment, the parking track 90 is connected to the intermediate track via the switch 1. The intermediate track can be connected to the circular track (indirectly). The intermediate track can be set as one or more, and the switch 1 can also be set as one or more depending on the specific situation.

[0027] In this utility model, there are multiple ways for the transport train 10 to load and unload materials in the loading and unloading section 20a. For example, in one embodiment, the transport train 10 stops at the loading and unloading section 20a to load and unload materials. In other embodiments, the transport train 10 can also complete the loading and unloading during the movement, that is, it can load and unload materials while passing through the loading and unloading section 20a.

[0028] In this invention, the energy storage medium 50 can be configured as liquid, solid, or a combination of solid and liquid. The method of transferring it from the transport train 10 to the stockpiling area 80 or from the stockpiling area 80 to the transport train 10 can vary depending on the properties and form of the energy storage medium 50. In one embodiment, when the energy storage medium 50 is liquid or bulk, the transport train 10 can complete the loading and unloading of the energy storage medium 50. For example, the transport train 10 can unload by side unloading, rotary unloading, or opening the unloading port. Loading is carried out by a feeder to transport the energy storage medium 50 to the transport train 10. In another embodiment, when the energy storage medium 50 is solid, a transfer device can be used for loading and unloading. The transfer device can be a transfer vehicle, a hoisting device, etc.

[0029] In one embodiment of this utility model, the energy storage medium 50 is set as an energy storage weight 50. The energy storage weight 50 can be prefabricated into a standard block, such as a reinforced concrete block, a metal block, or a filler block, etc., and its shape can be set as rectangular. The energy storage weight 50 can be provided with structures or components that facilitate clamping / stacking. The energy storage weight 50 is loaded and unloaded by a hoisting device 100. The purpose of setting the hoisting device 100 in this utility model is to realize the unloading / loading of the energy storage weight 50 on the transport train 10 by hoisting. The specific structure of the hoisting device 100 is not limited, and existing hoisting devices in the prior art can be used, such as gantry crane hoisting devices, crane-type hoisting devices, hoisting vehicles, hoisting robots, etc. In one embodiment, the hoisting device is set as a gantry crane hoisting device. The hoisting device is provided with a main frame 100a. The main frame 100a is provided with a vertically movable or driven movable structure, which is resistant to water. A gripper 101, movable in a horizontal direction or driven to move, is used to grip / release the energy storage weight 50. The gripper 101 can have various structural forms, such as a claw, a robotic arm, a hook, a coupler, etc. In one embodiment, the gripper 101 is configured as a claw, which can be moved by a moving trolley. In another embodiment, the loading and unloading section 20a and the stacking area 80 are arranged at intervals along the loading and unloading movement direction of the gripper. The gripper 101 moves back and forth between the loading and unloading section 20a and the stacking area 80 along the loading and unloading movement direction to load and unload materials. There are various loading and unloading methods for the gripper 101. In one embodiment, the gripper 101 directly picks up / places the energy storage weight 50 between the stacking area 80 and the transport train 10 to realize loading and unloading. In another embodiment, the gripper 101 cooperates with other transfer devices, such as AGV trolleys, to realize loading, unloading and position transfer of the energy storage weight 50 between the stacking area 80 and the transport train 10.

[0030] like Figure 2 As shown, in one embodiment, along the loading and unloading direction of the gripper, the stacking area 80 is located between the loading and unloading section 20a and the parking section 90a. This layout can make full use of the space on one side of the stacking area 80 to set up the parking section 90a, thus optimizing the space setting of this area.

[0031] like Figure 3 As shown, in one embodiment, along the material handling direction of the gripper, the loading and unloading section 20a is located between the stacking area 80 and the parking section 90a. This layout can make full use of the space on one side of the loading and unloading section 20a to set up the parking section 90a, thus optimizing the space setting of this area.

[0032] like Figure 4 As shown, in one embodiment, multiple parking tracks 90 are provided along the direction of loading and unloading of the gripper. The hoisting device 100 is located between two parking sections 90a. This layout allows the parking tracks 90 to be set around the hoisting device 100, making full use of the space outside the hoisting device and forming a compact layout structure in the yard.

[0033] like Figure 5 As shown, in one embodiment, the hoisting device 100 is provided with a main frame 100a. Projected vertically, the loading and unloading section 20a, the stockpiling area 80, and the parking section 90a are located within the projection range of the main frame. This layout can make full use of the internal space of the hoisting device, reduce the overall area of ​​the stockpile, and reduce construction costs. In another embodiment, at least a portion of the stockpiling area 80 and at least a portion of the parking section 90a overlap each other in space. This spatial overlap arrangement can make full use of the limited space of the hoisting device.

[0034] In one embodiment, a stacking rack 102 is provided inside the main frame 100a, and the stacking rack 102 is provided with a support platform 102b. The energy storage weight 50 can be placed on the support platform 102b. At least a part of the parking section 90a is located below the support platform 102b. In this arrangement, the upper part of the support platform 102b serves as a stacking area, and the lower part serves as a parking area, thus constructing a three-dimensional stacking area and parking area, making full use of the space.

[0035] In one embodiment, multiple parking tracks 90 are provided. In another embodiment, each parking track only accommodates one transport train. This arrangement facilitates the rapid and orderly entry of multiple trains located on the circular track into different parking tracks during parking and starting. During startup, multiple trains can also orderly merge from the parking tracks into the circular track for energy storage and / or power generation, improving the efficiency of parking and starting operations and making the drive configuration of the parking tracks simpler and more reliable. In another embodiment, the parking sections 90a of the multiple parking tracks 90 are arranged in parallel. This arrangement allows for the installation of as many parking sections 90a as possible within the same space, resulting in higher space utilization. In yet another embodiment, the loading and unloading section 20a is arranged in parallel with the parking section 90a. This arrangement makes fuller use of the same space.

[0036] like Figure 4As shown, in one embodiment, the inlet 91 and outlet 92 of the parking track 90 are respectively connected to the up rail and down rail or the down rail and up rail. With this configuration, the parking track 90 can connect with the ring track 20 outside the yard (high-level yard 70 / low-level yard 60), avoiding the need to install switch devices in the yard and thus occupy the space of the parking area in the yard.

[0037] In one embodiment, the high-level storage yard and / or low-level storage yard are provided with building structures. The building structures can be the yard's factory buildings or other components, such as rain shelters. Projected vertically, the loading and unloading section, the stockpiling area, and the parking section are all located within the projection range of the building structures. This arrangement can make full use of the existing building structures of the storage yard to achieve protection of each area and reduce infrastructure costs.

[0038] like Figure 8 As shown, the transport train 10 includes multiple carriages 11, which are flexibly connected. The carriages 11 are configured as flatbeds or boxcars. The flexible connection in this invention is not limited to a specific connection structure; the flexible connection structure can adopt conventional train connection structures in the art, such as the classic "Jan coupler" connection, universal joint connection, or flexible rope connection. As long as two adjacent carriages can achieve horizontal and / or vertical deflection / swaying after connection, it is considered a flexible connection in this invention. The flexible connection allows the transport train 10 to better adapt to different terrains and achieve turning and / or climbing. In one embodiment of this invention, two adjacent carriages 11 can... The two adjacent carriages 11 can be connected by a universal joint 13 or by a connector having a first hinge 13a and / or a second hinge contact 13b, so that the two adjacent carriages 11 can have a certain amount of movement space in the vertical direction Z and / or the horizontal direction Y. In one embodiment, the transport train 10 may optionally be provided with a driven structure 11a so that it can be driven by the drive device 30. The driven structure 11a can be a drive plate or a drive engagement / connector. Its arrangement with the carriage 11 can be integrally formed with the carriage 11 or it can be a separate component set on the carriage 11. The way it is set on the carriage 11 can be a fixed connection or a detachable connection that is easy to maintain.

[0039] The circular track 20 can be formed into a closed circular track by combining multiple sections of straight and curved tracks. The laying method can be determined according to different tracks and different terrains. One laying method for the up / down track is that a part of the up / down track can be laid on the mountain surface and / or a part of the track can be laid on the support structure. Laying on the mountain surface can be done by leveling the land. The laying operation can refer to the existing track laying construction specifications. The support structure can be, for example, a man-made metal support frame or a concrete support column. Multiple laying methods should be combined and adjusted according to the terrain. At least a part of the up / down track can rely on this method to form a stable and continuous drop section (up / down section), which is conducive to the stable operation / stable power generation of the transport train 10. Since there is a height difference between the high-level storage yard 70 and the low-level storage yard 60, the up / down track needs to be connected. For both high-level and low-level storage yards, and to adapt to the mountainous terrain, each track can be composed of one or more segments of ascending, descending, and horizontal sections in the vertical direction. Taking the ascending track as an example, in one embodiment, at least one segment of the ascending track is set as an ascending segment, that is, the altitude gradually increases in the vertical direction. In another embodiment, in addition to setting an ascending segment, the ascending track can selectively set a horizontal section and / or a descending segment. That is, in the track with an overall upward trend, a local segment can be a horizontal section and / or a descending section, so as to better adapt to the terrain. The parking track 90 and the descending track can be set similarly. At least one segment of the high-level and / or low-level operating track is set as a horizontal section, which can better adapt to the terrain conditions of the storage yard area. Of course, the high-level and / or low-level operating tracks can also refer to the ascending track to set one or more segments of ascending, descending, and horizontal sections.

[0040] The drive unit 30 is configured to drive the transport train 10 to run on the transport track 20. In this invention, the drive unit 30 uses an electric motor as a power source to drive the transport train 10 to the elevated storage yard 70, thereby converting electrical energy into the gravitational potential energy of the transport train 10 and / or the energy storage weight 50. The arrangement of the drive unit 30 relative to the transport train 10 and the transport track 20 can be configured in various ways according to the terrain. For example, one active drive implementation is that the drive unit 30 is mounted on the transport train 10 and contacts / connects to the transport track 20 through a power transmission structure, thereby driving the transport train 10 to move relative to the transport track 20. Another passive drive implementation is... The formula is as follows: the drive device 30 is not located on the transport train 10, but is located outside the transport train 10. It directly drives the transport train 10 to move relative to the transport track 20 by contacting / connecting with the transport train 10 through a power transmission structure. The drive device 30 can be any train drive device known to those skilled in the art in the prior art. The core of the selection of the drive device 30 in this utility model lies in the layout of the drive device 30 relative to the vehicle / or track, the driving method of the drive device 30 and the transport train 10, and the power transmission structure of the drive device 30 itself, that is, the power transmission structure of the power source (motor). There are no specific restrictions, and it can adopt existing solutions, such as... Figure 9 As shown, in one embodiment of this utility model, the drive device 30 and the transport train 10 can be selected to use a drive wheel type drive method. That is, the drive device 30 is provided with a drive wheel 31. The drive wheel 31 is kept in contact with the driven structure 11a (drive plate) of the transport train 10 by a tensioning mechanism 32 to achieve friction drive. The intermediate transmission structure of the drive wheel 31 that receives the motor power can be set according to different working conditions. For example, the drive device structure in the applicant's earlier application CN 202320067168.9 can be referred to, which adopts a drive wheel type drive method. The drive wheel 31 can be set inside the transport track 20 / transport train 10 (built-in type) as in CN 202320067168.9. In other embodiments (such as... Figure 4As shown), the drive wheel 31 can also be set on the outside of the transport track 20 / transport train 10 (external type). The drive wheel 31 can be a rubber wheel, a metal wheel, or a wheel made of other composite materials. The purpose of setting the drive device 30 in the track-type energy storage system of this utility model is to drive the transport train 10 to run on the transport track 20. In order to realize the cyclic operation of the transport train 10, in one embodiment, the drive device 30 is set along the up track, high-level running track, low-level running track, and parking track 90 to drive the transport train 10 to run. The transport train 10 can run on the down track by gravity without the need to set the drive device 30. In another embodiment, the drive device 30 can also be set on the down track. For example, in the case of setting up an up section in the down track described above (there is a local uphill slope), the drive device 30 is set on the up section to prevent the transport train 10 from falling back. Alternatively, the drive device 30 can be set on the non-descending slope section of the down track, such as the two connecting sections connecting the high-level storage yard 70 and the low-level storage yard 60 or other horizontal sections to realize the smooth operation of the transport train 10.

[0041] In one embodiment of this invention, the circular track 20 and the parking track 90 can use the same driving device 30 with the same driving method / structure. In one embodiment, the driving device 30 of the entire system uses a drive wheel type driving method. In another embodiment, for example, a chain or cable driving method can also be used. This method can achieve large-scale driving device, reduce costs, and facilitate maintenance. In another embodiment, different tracks / track sections can also use different driving methods / structures. For example, the upward track and / or the parking track 90 uses a drive wheel type driving method, while one or more of the high-position running track and the low-position running track use other driving forms, such as a gear and rack driving method or a chain driving method. Combining multiple driving methods can achieve different driving accuracies. Similarly, the same track generally uses the same driving device 30, such as a drive wheel type driving device. However, in other embodiments, the same track can use different driving devices 30. For example, the uphill track includes an uphill section with a continuously increasing elevation, which uses a drive wheel type drive. The connecting section between the upper and lower storage yards uses other drive methods mentioned above. A portion of the parking track 90 uses a drive wheel type drive, while a portion of its parking section 90a uses other drive methods. The arrangement of the drive device 30 relative to the vehicle / or track can be varied. For example, one arrangement is that the drive device 30 can be mounted on the transport train 10; another is that the drive device 30 is fixed at a fixed position to drive the transport train 10 (winch cable traction drive); yet another arrangement is that multiple drive devices 30 are spaced apart along the transport track 20. In one embodiment, the drive device 30 uses a drive wheel type drive, and multiple drive devices 30 are spaced apart along the uphill track, allowing multiple drive devices 30 to provide relay drive for the transport train 10. In one embodiment, to ensure a smoother relay, the uphill track... In one embodiment, the distance between any two adjacent drive devices 30 is less than or equal to the length of the transport train 10. With this arrangement, at least one drive device 30 is present at any position of the transport train 10 in the upward section, making the upward movement more stable. In another embodiment, the distance between any two adjacent drive devices 30 is less than or equal to the length of the transport train 10 throughout the entire length of the upward track. This ensures that at least one drive device is present at any position of the transport train 10 throughout the entire length of the upward track, ensuring continuous power and smooth and reliable transportation during the upward journey. The distribution arrangement of drive devices 30 on other tracks can be similar to the arrangement on the upward track. Drive devices 30 can be located on the outside or inside of the transport train 10 / transport track 20. In another embodiment, drive devices can also be installed on the transport track 20. Various installation methods can be selected according to the actual layout space.

[0042] The power generation unit 40 is configured to convert the gravitational potential energy of the transport train 10 and / or the energy storage block 50 into electrical energy during the process of the transport train 10 running along the down track from the high-level storage yard 70 to the low-level storage yard 60. The core of the power generation device 40 in this utility model lies in its layout relative to the vehicle / or track. The specific limitations on the power generation device 40's driving method by the transport train 10 and its own power generation structure are not limited; existing technologies and solutions can be adopted. For example, in one embodiment, referring to the aforementioned driving method of the drive device 30 driving the transport train 10, the power generation device 40 adopts a similar drive wheel-drive plate method to receive the drive from the transport train 10. That is, the driving methods of the drive device 30 and the power generation device 40 are reversed. It can also be equipped with a tensioning structure to maintain the driven state. The power generation structure adopts an existing permanent magnet synchronous motor structure; that is, the power generation device 40 is a permanent magnet synchronous generator driven by a drive wheel. In another embodiment, for example, the power generation device in the applicant's earlier application CN202411805892.2 can be used, or the power generation device in CN202411805892.2 can be used. Adjustments can be made to the existing technology, such as changing the tensioning method to hydraulic or electric tensioning, the generator arrangement to vertical or horizontal, and the drive wheel to be located on the outside of the track. The arrangement of the power generation device 40 relative to the vehicle / or track can be varied. For example, one arrangement is that multiple power generation devices 40 are spaced apart along the down track, and the multiple power generation devices 40 can form a relay power generation. In one embodiment, in at least one continuous down section of the down track, the distance between any two adjacent power generation devices 40 is less than or equal to the length of the transport train 10. With this arrangement, at least one power generation device 40 is driven at any position of the running train 10 in the down section, which fully converts the gravitational potential energy of the transport train 10 and / or the energy storage weight 50. The power generation device 40 can be located on the outside or inside of the transport train 10 / transport track 20. In another embodiment, the drive device can also be installed on the down track. Various installation methods can be selected according to the actual layout space.

[0043] This utility model discloses a track-type gravity energy storage system that utilizes the elevation difference of the terrain to arrange a high-level storage yard 70 and a low-level storage yard 60. A circular track 20 allows a transport train 10 to circulate between the high-level storage yard 70 and the low-level storage yard 60 (in one cycle, the transport train 10 sequentially travels along the upward track, high-level running track, downward track, low-level running track, and upward track). During energy storage, the drive device 30 drives the transport train 10 along the upward track from the low-level storage yard to the high-level storage yard, achieving the conversion of electrical energy to gravitational potential energy. During power generation, the transport train 10 travels along the downward track to drive the power generation device 40 to generate electricity, achieving the conversion of gravitational potential energy to electrical energy. The circular track 20 is equipped with a loading and unloading section 20a. When the transport train passes through the loading and unloading section 20a, the energy storage medium 50 can be loaded and / or unloaded. The system is placed in a stockpiling area 80. The two ends of the parking rail 90 are connected to the circular rail 20. The parking rail 90 is equipped with a parking section 90a. When the system is running, the transport train 10 and / or the energy storage medium 50 circulate on the circular rail 20 to store energy and generate electricity. When the system stops or other situations require stopping, the parking rail 90 is connected to the circular rail 20 through a switch. The transport train 10 located on the circular rail 20 can then run to the parking rail 90 and stop at the parking section 90a. In one embodiment, when the parking mode is activated, the transport train 10 located on the circular rail 20 can directly enter the parking rail 90 to stop without unloading. When the working mode is activated, the transport train 10 with material on the parking rail 90 directly merges into the circular rail 20 to store energy and / or generate electricity, truly realizing start-stop functionality.

[0044] In summary, the circular track and parking track of this utility model's track-type gravity energy storage system are interconnected. In the working mode, the transport train runs on the circular track to store energy and / or generate electricity. When the parking mode is activated, the transport train enters the parking track from the circular track to stop. Furthermore, the loading and unloading section, stockpiling area, and parking section that need to be traversed in both working conditions are uniformly planned and set in the same area (high-level stockpiling yard or low-level stockpiling yard), eliminating the need for additional planning of each area and saving construction costs. With the parking section and loading and unloading section set in the same area, the transport train can quickly and conveniently reach the parking section, resulting in high parking efficiency.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A track-mounted gravity energy storage and transportation system, characterized in that, include: Low-level storage yard, high-level storage yard, transport train, circular track, drive unit, power generation unit, parking track; The circular track includes an upward track, a high-level running track, a downward track, and a low-level running track connected in sequence. The transport train is configured to carry energy storage medium and run on the circular track. It passes through the upward track, high-level operating track, downward track, and low-level operating track in sequence along a single direction of travel. The transport train can be driven by the drive device to run along the upward track from the low-level stockpile to the high-level stockpile. The transport train can drive the power generation device to generate electricity when running along the downward track from the high-level stockpile to the low-level stockpile. The high-level operating track and / or the low-level operating track are provided with loading and unloading sections. When the transport train is located in the loading and unloading section, the energy storage medium can be transferred from the transport train to a stockpile area and / or from a stockpile area to the transport train. The parking track includes an inlet and an outlet, which are respectively connected to a circular track via turnouts. The parking track is provided with a parking section located between the inlet and the outlet. The high-level stockpile and the low-level stockpile are provided with an elevation difference, and at least a portion of the loading and unloading section, at least a portion of the stockpile area, and at least a portion of the parking section are located in the same high-level stockpile or low-level stockpile.

2. The track-type gravity energy storage and transportation system according to claim 1, characterized in that, The high-level storage yard and / or low-level storage yard are equipped with building structures. When projected vertically, the loading and unloading section, the stockpiling area, and the parking section are all located within the projection range of the building structures.

3. The track-type gravity energy storage and transportation system according to claim 1, characterized in that, The energy storage medium is configured as an energy storage weight, which is configured to be transferred from the transport train to the stockpiling area or from the stockpiling area to the transport train by a hoisting device. The hoisting device is equipped with a gripping component, and the loading and unloading sections and the stockpiling area are spaced apart along the loading and unloading movement direction of the gripping component.

4. The track-type gravity energy storage and transportation system according to claim 3, characterized in that, Along the direction of material handling and unloading, the material stacking area is located between the loading / unloading section and the parking section.

5. A track-type gravity energy storage and transportation system according to claim 3, characterized in that, Along the direction of material handling and unloading, the loading and unloading section is located between the stockpiling area and the parking section.

6. The track-type gravity energy storage and transportation system according to claim 3, characterized in that, Multiple parking tracks are provided along the direction of material loading and unloading, and the hoisting device is located between two parking sections.

7. The track-type gravity energy storage and transportation system according to claim 3, characterized in that, The hoisting device is equipped with a main frame that is projected vertically. At least a portion of the loading and unloading section, at least a portion of the stockpiling area, and at least a portion of the parking section are located within the projection range of the main frame, and at least a portion of the stockpiling area overlaps with at least a portion of the parking section.

8. A track-type gravity energy storage and transportation system according to claim 7, characterized in that, A stacking rack is provided inside the main frame, and the stacking rack is provided with a support platform. The energy storage weight can be placed on the support platform, and at least a part of the parking section is located below the support platform.

9. A track-type gravity energy storage and transportation system according to claim 1, characterized in that, The parking tracks are provided in multiple lines, with parking sections of the multiple parking tracks arranged in parallel.

10. A track-type gravity energy storage and transportation system according to claim 9, characterized in that, The loading and unloading section is arranged parallel to the parking section.

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