Suspension cable rail type gravity energy storage device, system and method

Abstract

The invention relates to the technical field of gravity energy storage devices, and discloses a suspension cable rail type gravity energy storage device, system and method, the device comprises a loading trolley and two parallel steel rails, the steel rails are divided into a low position area, an ascending area and an energy storage area, and potential energy adjustment is achieved through sectional design. Wherein the ascending area is a large-gradient inclined rail section, the energy storage area comprises a speed reduction slope section and a horizontal energy storage rail section, the low-position area is provided with a buffering rail section, and a three-level safety speed reduction mechanism is formed. The system is provided with an intelligent lubricating assembly, friction loss is reduced through a U-shaped groove rail and a closed-loop oil way, and dynamic scheduling is achieved by integrating a central control unit. According to the method, safe and controllable energy conversion is achieved by improving load trolley energy storage in the valley electricity period and releasing power generation in the peak electricity period in combination with the buffer rail section and the speed reduction slope section. The gravity energy storage device solves the problems that a traditional gravity energy storage device is poor in safety and low in efficiency and has the advantages of being stable in structure, accurate in control, high in adaptability and the like, and the circulation efficiency can reach 85% or above.

Description

Technical Field

[0001] The present invention relates to the technical field of gravity energy storage devices, and in particular to a suspension track type gravity energy storage device, system and method. Background Art

[0002] With the rapid development of renewable energy sources such as wind and solar power, the power grid is increasingly demanding energy storage technologies. Gravity energy storage, as a mechanical energy storage method, offers advantages such as environmental friendliness, long lifespan, and low cost. Its basic principle is to convert electrical energy into gravitational potential energy by lifting a heavy object to a certain height. When needed, the weight is released, and the kinetic energy from its fall drives a generator, converting the gravitational potential energy back into electrical energy.

[0003] Existing cable-stayed track gravity energy storage systems consist of a track and a lifting mechanism. However, these tracks only feature a single steep slope, such as an ascending section with an inclination greater than 30°. They lack a buffer section or speed control mechanism. When a loaded trolley rapidly descends from a height, it can easily lose speed control, leading to dangers and even damage to the equipment.

[0004] In addition, the friction resistance between the load trolley and the track is high, especially in sections with large slopes, which causes severe mechanical wear and reduces system efficiency.

[0005] Therefore, we propose a suspension track gravity energy storage device, system and method to solve the problems in the above background. Summary of the Invention

[0006] The present invention provides a suspension track type gravity energy storage device, system and method, which can solve the problem in the prior art that the existing suspension track type gravity energy storage device only has a single large-angle slope section and lacks a buffer section. When the loaded trolley slides down quickly from a height, it is easy to get out of control of the speed, which may cause danger or even damage to the equipment.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A suspended cable track gravity energy storage device comprises a load-carrying trolley and two parallel steel rails. A rigid support structure is provided at the bottom of the rails. A gravity energy storage block is loaded inside the load-carrying trolley. The load-carrying trolley carrying the gravity energy storage block slides on the rails. The rails are provided with a low-position area, an ascending area, and an energy storage area for regulating the potential energy of the load-carrying trolley. The ascending area is a steeply inclined rail section. A driving mechanism for pulling the load-carrying trolley is provided on the rails.

[0009] The driving mechanism drives the load-carrying trolley carrying the gravity energy storage block from the low-position area through the rising area and into the energy storage area to realize gravity energy storage.

[0010] Preferably, the low-level area includes a buffer rail section and an entry section, the buffer rail section is lower than the entry section, one end of the buffer rail section is smoothly connected to the bottom of the inclined rail section, and the other end is smoothly connected to the entry section;

[0011] The energy storage area includes a stable track section, a speed reduction slope section and an energy storage track section which are connected in sequence; the energy storage track section is located at the highest point and is set horizontally, and the stable track section and the inclined track section are smoothly transitioned and connected.

[0012] Preferably, the driving mechanism includes multiple sets of suspension cable traction assemblies; the multiple sets of suspension cable traction assemblies cooperate with corresponding sections of the rails to drive the load-carrying trolley on different slope sections.

[0013] Preferably, the entry section, buffer rail section, inclined rail section, stable rail section and energy storage rail section are all provided with suspension cable traction components.

[0014] Preferably, the suspension cable traction assembly includes two traction wheels and ropes cooperating with the traction wheels. A drive shaft is installed inside the traction wheel, and a bidirectional energy conversion device is installed at one end of the drive shaft.

[0015] Preferably, the support structure includes a base frame and a support seat, the base frame is fixedly connected to the bottom of the rail, the support seat is arranged on the outside of the rail, a bearing seat is installed on the support seat, both ends of the drive shaft are rotatably connected to the bearing seat on the support seat, and the bidirectional energy conversion device is fixedly installed on the support seat, and the bidirectional energy conversion device drives the drive shaft to rotate.

[0016] Preferably, the ropes are evenly provided with card plates, the outside of which is provided with outward-inclined hooks, the traction wheel is evenly provided with slots on its circumference, the card plates cooperate with the slots, the rotating traction wheel drives the card plates to move in a cycle, and the card plates drive the ropes to be transmitted stably, and two groups of L-shaped hooks are provided at the bottom of the load-carrying trolley, the L-shaped hooks are inclined, and the L-shaped hooks at the bottom of the load-carrying trolley can be slidably engaged with the hooks of the card plates.

[0017] Preferably, a lubrication assembly is provided on the rail, which includes an oil outlet pipe and an oil return groove. The rail is provided with a U-shaped groove, and the load trolley moves inside the U-shaped groove of the rail. The oil outlet pipe is located outside the top of the U-shaped groove and is connected to the interior. The oil return groove is located at the bottom of the U-shaped groove and is connected to the interior. The oil outlet pipe releases lubricating oil, and the lubricating oil flows from top to bottom along the U-shaped groove of the rail.

[0018] A cable-stayed rail gravity energy storage system also includes a central control unit and a dynamic scheduling module. The central control unit receives real-time data from wind speed sensors, RFID signals indicating the location of heavy objects, and grid frequency fluctuation parameters. The dynamic scheduling module communicates with the central control unit and, based on electricity price signals, activates the electric mode of the bidirectional energy conversion device during off-peak hours to drive the load-carrying trolley upwards to store energy.

[0019] During peak power periods, the load trolley is released to slide downward and the bidirectional energy conversion device is switched to power generation mode;

[0020] The oil outlet pipe of the track lubrication assembly intelligently adjusts the amount of lubricating oil according to the running state of the load trolley.

[0021] A suspension track type gravity energy storage method comprises the following steps:

[0022] Step S1: In the energy storage stage, the control host detects the grid valley power signal and starts the permanent magnet synchronous motor in electric mode;

[0023] The traction wheel pulls the load trolley from the low area through the rising area to the energy storage area through the rope; the load trolley slows down through the deceleration slope section and stops at the energy storage rail section;

[0024] Step S2: In the energy release phase, the control host responds to the peak power signal of the power grid and releases the load-carrying trolley;

[0025] The loaded trolley slides down the deceleration slope section, enters the buffer rail section through the ascending area and decelerates naturally. The permanent magnet synchronous motor switches to the power generation mode, converts the downward sliding energy into electrical energy output, realizes the graded recovery of kinetic energy, and completes the conversion of potential energy and electrical energy.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The cable-track gravity energy storage device, system and method provided by the present invention solve the problem in the prior art that the cable-track gravity energy storage device only has a single large-angle slope section and lacks a buffer section and speed control mechanism. Specifically, by setting up the low-position area and the entry section, the buffer rail section is used to reduce the speed of the load-carrying trolley when entering the ascending area, ensuring the safety and stability of the operation; the large-slope inclined rail section in the ascending area is combined with the traction mechanism to smoothly lift the gravity energy storage block to the energy storage area and efficiently store potential energy; the stable rail section and the speed reduction slope section in the energy storage area effectively slow down and stabilize the load-carrying trolley to avoid damage caused by high-speed movement; the lubrication component reduces friction resistance through the oil film, reducing wear and energy consumption during system operation. The outward-inclined ring hook designed on the outside of the card plate works in conjunction with the L-shaped hook at the bottom of the load-carrying trolley. When the traction wheel rotates, the card plate is driven to move through the card slot, and the card plate drives the L-shaped hook through the ring hook, thereby pulling the load-carrying trolley to move on the rail. This connection method features automatic docking and detachment, adapting to varying slopes in different sections and ensuring a smooth and reliable traction process. The entire system, combined with a central control unit and a dynamic scheduling module, adjusts energy storage and release strategies during different electricity price periods, ensuring efficient operation and economic benefits. Through these designs, the present invention achieves safe, efficient, and durable energy storage, significantly improving the overall performance of the cable-track gravity energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0029] Figure 2 It is a side structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the bottom structure of the rail of the present invention;

[0031] Figure 4 For the present invention Figure 3 Schematic diagram of a local enlarged structure;

[0032] Figure 5 This is a schematic diagram of the installation structure of the bidirectional energy conversion device of the present invention;

[0033] Figure 6 It is a schematic diagram of the oil outlet pipe and oil return tank structure of the present invention.

[0034] Among them: 1. Load-carrying trolley; 2. Steel rail; 4. Gravity energy storage block; 5. Low-position area; 6. Rising area; 7. Energy storage area; 9. Buffer rail section; 10. Entry section; 11. Stable rail section; 12. Speed ​​reduction ramp section; 13. Energy storage rail section; 15. Traction wheel; 16. Rope; 17. Drive shaft; 18. Bidirectional energy conversion device; 19. Underframe; 20. Support seat; 21. Bearing seat; 22. Clamp; 23. Ring hook; 24. Clamping slot; 25. L-shaped hook; 27. Oil outlet pipe; 28. Oil return tank; 29. ​​U-shaped slot. DETAILED DESCRIPTION

[0035] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0036] Example 1:

[0037] See also Figure 1-6 , the present invention provides a technical solution:

[0038] A suspension rail type gravity energy storage device comprises a load trolley 1 and two parallel steel rails 2, wherein a rigid support structure is provided at the bottom of the steel rails 2 to keep the two steel rails 2 stable.

[0039] The load trolley 1 is loaded with a gravity energy storage block 4. The load trolley 1 with the gravity energy storage block 4 slides on the rail 2, and the load trolley 1 drives the gravity energy storage block 4 to rise and fall along the rail 2.

[0040] The rail 2 is provided with a low area 5, an ascending area 6 and an energy storage area 7 for adjusting the potential energy of the load-carrying trolley 1. The load-carrying trolley 1 of the gravity energy storage block 4 passes through the low area 5 into the ascending area 6 to gradually increase the potential energy, and enters the energy storage area 7 to complete the gravity energy storage.

[0041] The rising area 6 is an inclined rail section with a large slope, and a driving mechanism for pulling the load trolley 1 is provided on the rail 2; the driving mechanism drives the load trolley 1 carrying the gravity energy storage block 4 from the low area 5 through the rising area 6 and into the energy storage area 7 to realize gravity energy storage.

[0042] The low-level area 5 includes a buffer rail section 9 and an entry section 10. The buffer rail section 9 is lower than the entry section 10. One end of the buffer rail section 9 is smoothly connected to the bottom of the inclined rail section, and the other end is smoothly connected to the entry section 10.

[0043] The energy storage area 7 includes a stable rail section 11, a deceleration slope section 12 and an energy storage rail section 13 connected in sequence; the energy storage rail section 13 is located at the highest point and is arranged horizontally, and the stable rail section 11 is smoothly transitioned to the inclined rail section.

[0044] The buffer rail section 9 is lower than the entry section 10. When the load-carrying trolley 1 carrying the gravity energy storage block 4 descends from a height, it enters the buffer rail section 9. When it slides from the buffer rail section 9 to the entry section 10, the speed of the load-carrying trolley 1 is reduced to prevent it from directly rushing out of the entry section 10 to ensure safety. The deceleration slope section 12 decelerates the load-carrying trolley 1 after it accelerates through the inclined rail section and enters the stable rail section 11, so that it enters the energy storage rail section 13 smoothly. When potential energy and electric power are converted, the load-carrying trolley 1 enters the deceleration slope section 12 with a lower slope from the energy storage rail section 13 to perform initial acceleration to avoid directly entering the inclined rail section with a large slope, which may easily cause loss of control. This is beneficial for the device to gradually adapt to the load-carrying trolley 1 carrying the gravity energy storage block 4 and reduce damage to the device.

[0045] Example 2:

[0046] See also Figure 2-5 , and combined with Example 1, it is further obtained that the driving mechanism includes multiple groups of suspension cable traction components; the multiple groups of suspension cable traction components cooperate with corresponding sections of the rail 2, and are used for the rail 2 to pull and drive the load-carrying trolley 1 on different slope sections.

[0047] The entry section 10 , the buffer rail section 9 , the inclined rail section, the stable rail section 11 and the energy storage rail section 13 are all provided with suspension cable traction components.

[0048] The suspension cable traction assembly includes two traction wheels 15 and ropes 16 that cooperate with the traction wheels 15. A drive shaft 17 is installed inside the traction wheel 15, and a bidirectional energy conversion device 18 is installed at one end of the drive shaft 17.

[0049] In the above scheme, the drive mechanism utilizes multiple suspension cable traction assemblies that work in conjunction with various sections of the rail 2. Each suspension cable traction assembly comprises two traction sheaves 15 and associated ropes 16. The traction sheaves 15 are connected to a bidirectional energy conversion device 18 via an internal drive shaft 17. When the system is in operation, the bidirectional energy conversion device 18 rotates the drive shaft 17, causing the traction sheaves 15 to rotate. Slots 24, evenly spaced around the circumference of the traction sheaves 15, interact with the retaining plates 22 on the ropes 16. The rotating traction sheaves 15, through the slots 24, drive the retaining plates 22, thereby ensuring stable transmission of the ropes 16.

[0050] Furthermore, the rope 16 is evenly provided with a card plate 22, and an outwardly inclined ring hook 23 is provided on the outer side of the card plate 22. A card slot 24 is evenly provided on the circumference of the traction wheel 15. The card plate 22 cooperates with the card slot 24. The rotating traction wheel 15 drives the card plate 22 to move in a cycle, and the card plate 22 drives the rope 16 to be stably transmitted. Two groups of L-shaped hooks 25 are provided at the bottom of the load trolley 1. The L-shaped hooks 25 are inclined. The L-shaped hooks 25 at the bottom of the load trolley 1 can be slidably engaged with the ring hooks 23 of the card plate 22;

[0051] Two sets of L-shaped hooks 25 on the bottom of the trolley 1 are designed to be tilted, allowing them to slide and engage with the hooks 23 on the outside of the clips 22, ensuring a secure connection during traction. The clips 22, evenly spaced on the rope 16, cooperate with the slots 24 of the traction wheel 15 to form a transmission system. The outward-angled hooks 23 on the outside of the clips 22 cooperate with the L-shaped hooks 25 on the bottom of the trolley 1. When the traction wheel 15 rotates, the clips 22 are driven by the slots 24, and the clips 22, in turn, drive the L-shaped hooks 25 via the hooks 23, thereby pulling the trolley 1 on the rails 2. This connection method features automatic docking and detachment, adapting to varying slopes in different sections and ensuring a smooth and reliable traction process.

[0052] The supporting structure includes a base frame 19 and a support seat 20. The base frame 19 is fixedly connected to the bottom of the rail 2, and the support seat 20 is arranged on the outside of the rail 2. A bearing seat 21 is installed on the support seat 20. Both ends of the drive shaft 17 are rotatably connected to the bearing seat 21 on the support seat 20. The bidirectional energy conversion device 18 is fixedly installed on the support seat 20, and the bidirectional energy conversion device 18 drives the drive shaft 17 to rotate.

[0053] In the above scheme, the support structure consists of a base frame 19 and a support base 20. The base frame 19 is directly fixed to the bottom of the rail 2, providing primary support. The support base 20 is located outside the rail 2. Bearing blocks 21 mounted on the support base 20 support both ends of the drive shaft 17, enabling smooth rotation. The bidirectional energy conversion device 18 is fixed to the support base 20 and drives the entire traction system by rotating the drive shaft 17. This arrangement ensures structural stability and facilitates maintenance and inspection.

[0054] During operation, the cable traction components coordinate according to the characteristics of different sections of the rail 2. Each section 10, buffer section 9, inclined section, stable section 11, and energy storage section 13 is equipped with a dedicated cable traction component, each adjusting the traction force and speed based on the functional requirements of its section. This segmented traction system precisely controls the operating state of the load trolley 1, ensuring safe and efficient energy storage and release.

[0055] Example 3:

[0056] See also Figure 6 , and combined with Example 1 and Example 2, it is further obtained that a lubrication assembly is provided on the rail 2, and the lubrication assembly includes an oil outlet pipe 27 and an oil return groove 28. A U-shaped groove 29 is provided on the rail 2, and the load trolley 1 moves inside the U-shaped groove 29 of the rail 2. The oil outlet pipe 27 is located outside the top of the U-shaped groove 29 and is connected to the interior. The oil return groove 28 is located at the bottom of the U-shaped groove 29 and is connected to the interior. The oil outlet pipe 27 releases lubricating oil, and the lubricating oil flows from top to bottom along the U-shaped groove 29 of the rail 2.

[0057] In the above scheme, the lubrication assembly injects lubricating oil into the top of the U-shaped groove 29 of the rail 2 through the oil outlet pipe 27. Under the influence of gravity, the lubricating oil naturally flows downward along the inner wall of the U-shaped groove 29, forming a uniform oil film covering the rail contact surface. As the trolley 1 moves within the U-shaped groove 29, the bottom portion of the trolley 1 in contact with the rail remains lubricated, effectively reducing frictional resistance. The lubricating oil that flows to the bottom of the U-shaped groove 29 is collected in the oil return tank 28 and, after filtration, can be recycled, achieving a closed-loop operation of the lubrication system.

[0058] The lubricating oil film can reduce the friction coefficient between the load trolley 1 and the track by more than 60%, significantly reducing mechanical wear; the flowing lubricating oil can remove metal debris and dust on the track surface, keeping the contact surface clean; the reduced friction resistance reduces the power consumption of the traction system, and the uniform oil film avoids overheating caused by local dry friction, thereby improving the stability of system operation.

[0059] A cable-track gravity energy storage system also includes a central control unit and a dynamic scheduling module. The central control unit is configured to receive real-time wind speed sensor data, a weight position RFID signal, and grid frequency fluctuation parameters. The dynamic scheduling module is in communication with the central control unit and, based on electricity price signals, activates the electric mode of the bidirectional energy conversion device 18 during off-peak hours to drive the load trolley 1 upward for energy storage.

[0060] During peak power periods, the load-carrying trolley 1 is released to slide down and the bidirectional energy conversion device 18 is switched to the power generation mode; the oil outlet pipe 27 of the track lubrication assembly intelligently adjusts the amount of lubricating oil according to the operating status of the load-carrying trolley 1.

[0061] A suspension track type gravity energy storage method comprises the following steps:

[0062] Step S1: In the energy storage stage, the control host detects the grid valley power signal and starts the permanent magnet synchronous motor in electric mode;

[0063] The traction wheel 15 pulls the load trolley 1 from the low area 5 through the rising area 6 to the energy storage area 7 through the rope 16; the load trolley 1 slows down through the deceleration slope section 12 and stops at the energy storage rail section 13;

[0064] Step S2: In the energy release phase, the control host responds to the peak power signal of the power grid and releases the load-carrying trolley 1;

[0065] The loaded trolley 1 slides down the deceleration slope section 12, passes through the ascending area 6 and enters the buffer rail section 9 to decelerate naturally. The permanent magnet synchronous motor switches to the power generation mode, converts the downward sliding energy into electrical energy output, realizes the graded recovery of kinetic energy, and completes the conversion of potential energy and electrical energy.

[0066] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A suspension track type gravity energy storage device, comprising a load-carrying trolley (1) and two parallel steel rails (2), wherein a rigid support structure is provided at the bottom of the steel rails (2), a gravity energy storage block (4) is loaded inside the load-carrying trolley (1), and the load-carrying trolley (1) loaded with the gravity energy storage block (4) slides on the steel rails (2), characterized in that: The steel rail (2) is provided with a low-position area (5), an ascending area (6) and an energy storage area (7) for regulating the potential energy of the load-carrying trolley (1), wherein the ascending area (6) is an inclined rail section with a large slope, and a driving mechanism for pulling the load-carrying trolley (1) is provided on the steel rail (2); The driving mechanism drives the load-carrying trolley (1) carrying the gravity energy storage block (4) from the low-position area (5) through the rising area (6) and into the energy storage area (7), thereby realizing gravity energy storage.

2. The cable-track gravity energy storage device according to claim 1, characterized in that: The low-level area (5) includes a buffer rail section (9) and an entry section (10), wherein the buffer rail section (9) is lower in height than the entry section (10), one end of the buffer rail section (9) is smoothly transitioned to the bottom of the inclined rail section, and the other end thereof is smoothly transitioned to the entry section (10); The energy storage area (7) comprises a stable rail section (11), a deceleration slope section (12) and an energy storage rail section (13) connected in sequence; the energy storage rail section (13) is located at the highest point and is arranged horizontally, and the stable rail section (11) is smoothly transitioned to the inclined rail section.

3. The cable-track gravity energy storage device according to claim 1, characterized in that: The driving mechanism comprises a plurality of groups of suspension cable traction assemblies, which cooperate with corresponding sections of the rail (2) and are used for the rail (2) to traction-drive the load-carrying trolley (1) on different slope sections.

4. The cable-track gravity energy storage device according to claim 2, characterized in that: The entry section (10), the buffer rail section (9), the inclined rail section, the stable rail section (11) and the energy storage rail section (13) are all provided with suspension cable traction components.

5. The cable-track gravity energy storage device according to claim 4, characterized in that: The suspension cable traction assembly comprises two traction wheels (15) and ropes (16) matched with the traction wheels (15); a drive shaft (17) is installed inside the traction wheel (15); and a bidirectional energy conversion device (18) is installed at one end of the drive shaft (17).

6. The cable-track gravity energy storage device according to claim 5, characterized in that: The supporting structure comprises a base frame (19) and a supporting seat (20), wherein the base frame (19) is fixedly connected to the bottom of the rail (2), the supporting seat (20) is arranged outside the rail (2), a bearing seat (21) is installed on the supporting seat (20), both ends of the driving shaft (17) are rotatably connected to the bearing seat (21) on the supporting seat (20), and the bidirectional energy conversion device (18) is fixedly installed on the supporting seat (20), and the bidirectional energy conversion device (18) drives the driving shaft (17) to rotate.

7. The cable-track gravity energy storage device according to claim 6, characterized in that: The rope (16) is evenly provided with a card plate (22), and an outwardly inclined ring hook (23) is provided on the outer side of the card plate (22). A card slot (24) is evenly provided on the circumference of the traction wheel (15). The card plate (22) cooperates with the card slot (24). The rotating traction wheel (15) drives the card plate (22) to move cyclically, and the card plate (22) drives the rope (16) to be stably transmitted. Two groups of L-shaped hooks (25) are provided at the bottom of the load trolley (1). The L-shaped hooks (25) are inclined. The L-shaped hooks (25) at the bottom of the load trolley (1) can be slidably engaged with the ring hooks (23) of the card plate (22).

8. The cable-track gravity energy storage device according to claim 7, characterized in that: A lubrication assembly is provided on the rail (2), the lubrication assembly comprising an oil outlet pipe (27) and an oil return groove (28). A U-shaped groove (29) is provided on the rail (2). The load-carrying trolley (1) moves inside the U-shaped groove (29) of the rail (2). The oil outlet pipe (27) is located outside the top end of the U-shaped groove (29) and is in communication with the interior. The oil return groove (28) is located at the bottom of the U-shaped groove (29) and is in communication with the interior. The oil outlet pipe (27) releases lubricating oil, and the lubricating oil flows from top to bottom along the U-shaped groove (29) of the rail (2).

9. A suspension track type gravity energy storage system, comprising the suspension track type gravity energy storage device according to any one of claims 1 to 8, characterized in that: The system also includes a central control unit and a dynamic scheduling module. The central control unit is used to receive wind speed sensor data, heavy object position RFID signals, and power grid frequency fluctuation parameters in real time. The dynamic scheduling module is connected to the central control unit in communication and, based on the electricity price signal, activates the electric mode of the bidirectional energy conversion device (18) during off-peak hours to drive the load-carrying trolley (1) upward to store energy. During peak power periods, the load-carrying trolley (1) is released to slide downward and the bidirectional energy conversion device (18) is switched to a power generation mode; the oil outlet pipe (27) of the track lubrication assembly intelligently adjusts the amount of lubricating oil according to the operating state of the load-carrying trolley (1).

10. A suspension track gravity energy storage method, based on the suspension track gravity energy storage system according to claim 9, characterized in that The following steps are involved: Step S1: In the energy storage stage, the control host detects the grid valley signal and starts the permanent magnet synchronous motor in electric mode; The traction wheel (15) pulls the load trolley (1) from the low position area (5) through the rising area (6) to the energy storage area (7) via the rope (16); the load trolley (1) is decelerated through the deceleration slope section (12) and stops at the energy storage rail section (13); Step S2: In the energy release phase, the control host responds to the peak power signal of the power grid and releases the load-carrying trolley (1); The loaded trolley (1) slides down along the deceleration slope section (12), enters the buffer rail section (9) through the ascending area (6), and decelerates naturally. The permanent magnet synchronous motor switches to the power generation mode, converts the downward sliding energy into electrical energy output, realizes the graded recovery of kinetic energy, and completes the conversion of potential energy and electrical energy.

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