Gravity energy storage system bearing vehicle structure meeting flexible power adjustment

Abstract

The invention relates to the technical field of gravity energy storage, in particular to a gravity energy storage system bearing vehicle structure meeting flexible power adjustment, which comprises a vehicle body and supporting wheels arranged on the vehicle body, and the supporting wheels are provided with pressure sensors used for detecting the bearing capacity of the supporting wheels; the containing pieces are symmetrically arranged on the vehicle body, counterweight pieces are arranged in the containing pieces, and upper cut-off pieces and lower cut-off pieces are arranged on the containing pieces; the load mass of the vehicle body is adjusted by controlling the mass of the counterweight part in the accommodating part; the load mass of the vehicle body is adjusted according to the power required by the gravity energy storage system, the pressure sensor is used for detecting the load mass of the vehicle body, and the load mass of the vehicle body can be changed due to the change of the mass of the counterweight, so that the power generation power in the working process of the energy storage system is changed, and the power can be flexibly adjusted to meet the smooth output requirement; and the standardized structure can be maintained to effectively control the cost.

Description

Technical Field

[0001] The present invention relates to the technical field of gravity energy storage, and in particular to a gravity energy storage system carrier vehicle structure capable of flexible power adjustment. Background Art

[0002] As the global energy mix shifts toward a low-carbon future, the proportion of renewable energy generation, represented by wind and solar power, continues to increase. However, its intermittent and volatile nature poses challenges to the stable operation of the power grid. Energy storage technology is key to accommodating large-scale renewable energy consumption, and gravity energy storage has become a research hotspot due to its advantages such as freedom from water resource constraints and flexible site selection. Slope-type gravity energy storage systems store and release energy by raising or lowering solid weights, and their output power is related to the quality of the storage medium.

[0003] In existing technologies, while using a single, large mass block can improve system efficiency, it also results in large jumps in the system's output power, making it difficult to meet the grid's demand for smooth power output. Using a combination of masses of varying specifications to achieve smooth power output requires designing a variety of supporting vehicles, tracks, and stacking sites, which undoubtedly increases system cost and hinders standardized application. Therefore, designing a gravity energy storage system vehicle structure that can flexibly adjust power to meet smooth output requirements while maintaining a standardized structure to effectively control costs has become a pressing technical challenge in this field.

[0004] Therefore, a gravity energy storage system carrier vehicle structure that can meet the requirements of flexible power adjustment is proposed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is: how to design a gravity energy storage system carrier vehicle structure that can achieve flexible power adjustment to meet smooth output requirements while maintaining a standardized structure to effectively control costs.

[0006] The above technical problems are solved by the following technical solutions: The present invention proposes a gravity energy storage system carrier vehicle structure that satisfies the flexible power adjustment requirement, comprising a vehicle body and support wheels provided on the vehicle body, wherein the support wheels are provided with pressure sensors for detecting the load bearing of the support wheels;

[0007] It also includes a receiving member symmetrically arranged on the vehicle body, a counterweight member is arranged in the receiving member, and an upper stop member and a lower stop member are arranged on the receiving member;

[0008] By controlling the mass of the counterweight member in the receiving member, the load mass of the vehicle body is adjusted;

[0009] The load mass of the vehicle body is adjusted according to the power required by the gravity energy storage system, and the pressure sensor is used to detect the load mass of the vehicle body.

[0010] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment of the present invention, it further includes a mass block provided on the vehicle body, and the mass block is provided between two symmetrically arranged receiving parts.

[0011] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment of the present invention, an upper channel and a lower channel are provided on the accommodating member.

[0012] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies the flexible power adjustment requirement of the present invention, a flow guide seat is provided in the receiving member.

[0013] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies the flexible power adjustment requirement of the present invention, chain rail connectors are provided on both sides of the vehicle body.

[0014] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment of the present invention: an opening is provided on the vehicle body.

[0015] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies the flexible power adjustment requirement of the present invention: the counterweight is a ball;

[0016] The load mass of the vehicle body is adjusted by controlling the number of the balls in the receiving member.

[0017] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies the flexible power adjustment of the present invention: the upper stop member is an upper opening and closing door;

[0018] The lower cut-off member is a lower opening and closing door.

[0019] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment of the present invention: the counterweight is water;

[0020] The load mass of the vehicle body is adjusted by controlling the volume of the water in the container.

[0021] In a preferred embodiment of the gravity energy storage system carrier vehicle structure that satisfies the flexible power adjustment of the present invention: the upper shut-off member is an upper control valve;

[0022] The lower cut-off member is a lower control valve.

[0023] The beneficial effect of the present invention is that due to the change in the mass of the counterweight, the load mass of the vehicle body can be changed, thereby changing the power generation power during the operation of the energy storage system, so that the power can be flexibly adjusted to meet the smooth output requirements while maintaining a standardized structure to effectively control costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0025] Figure 1 A structural diagram of a first embodiment of a gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment is shown.

[0026] Figure 2 A structural diagram of a second embodiment of a gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment is shown.

[0027] Figure 3 A structural schematic diagram of the link rail connector of the gravity energy storage system carrier vehicle structure that meets the requirements of flexible power adjustment is shown.

[0028] Figure 4 A schematic structural diagram of the stacking area platform of the slope chain track gravity energy storage system is shown.

[0029] In the figure: 1. Vehicle body; 11. Opening; 2. Support wheel; 21. Pressure sensor; 3. Mass block; 4. Accommodation member; 41. Upper channel; 42. Lower channel; 43. Guide seat; 5. Counterweight; 51. Ball bearing; 52. Water; 6. Upper shut-off member; 61. Upper opening and closing door; 62. Upper control valve; 7. Lower shut-off member; 71. Lower opening and closing door; 72. Lower control valve; 8. Track link;

[0030] 100. Gravity energy storage system carrier vehicle structure that meets the requirements of flexible power adjustment; 200. Collecting element; 300. Transfer mechanism; 400. First conveying element; 401. First opening and closing door; 500. Storage element; 600. Lifting element; 700. Second conveying element; 701. Second opening and closing door. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0032] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0033] Reference Figures 1 to 3This embodiment provides a gravity energy storage system carrier vehicle structure that meets the requirements of flexible power adjustment, including a vehicle body 1 and support wheels 2 provided on the vehicle body 1. The support wheels 2 are provided with pressure sensors 21 for detecting the load-bearing capacity of the support wheels 2. The support wheels 2 are used to provide support for the vehicle body 1 and reduce the resistance encountered by the vehicle body 1 during displacement. The pressure sensor 21 determines the overall mass of the vehicle body 1 by detecting the pressure applied by the vehicle body 1 to the support wheels 2.

[0034] It also includes a receiving part 4 symmetrically arranged on the vehicle body 1, a counterweight part 5 is provided in the receiving part 4, and an upper stop part 6 and a lower stop part 7 are provided on the receiving part 4; the overall mass of the vehicle body 1 can be adjusted by adjusting the counterweight part 5, and the upper stop part 6 and the lower stop part 7 are used to control the counterweight part 5 to enter and exit the receiving part 4.

[0035] The load mass of the vehicle body 1 is adjusted by controlling the mass of the counterweight 5 in the receiving member 4 ; the load mass of the vehicle body 1 is adjusted according to the power required by the gravity energy storage system, and the pressure sensor 21 is used to detect the load mass of the vehicle body 1 .

[0036] During use, the change in the mass of the counterweight 5 can change the load mass of the vehicle body 1, thereby changing the power generation power during the operation of the energy storage system, so that the power can be flexibly adjusted to meet the smooth output requirements while maintaining a standardized structure to effectively control costs.

[0037] As an optional embodiment: it further includes a mass block 3 provided on the vehicle body 1 , and the mass block 3 is provided between two symmetrically arranged receiving parts 4 .

[0038] The accommodating member 4 can play an auxiliary limiting role on the mass block 3 and position the mass block 3. The mass block 3 can be placed in corresponding quantities according to the power generation demand. The mass of the mass block 3 is relatively large, and a larger power adjustment can be achieved, while the mass of the counterweight 5 is relatively small, and the mass can be fine-tuned.

[0039] It should be noted that when the containers 4 on both sides are at the maximum load, that is, when the counterweight 5 fills the containers 4, the gravity provided by the containers 4 on both sides must be at least equal to the weight of a mass block 3. The mass block 3 serves as a step-type mass adjustment, and the counterweight 5 in the container 4 performs fine-tuning of the mass.

[0040] As an optional embodiment: the receiving member 4 is provided with an upper channel 41 and a lower channel 42 .

[0041] The provision of the upper channel 41 and the lower channel 42 facilitates the counterweight 5 to enter and exit the receiving member 4 .

[0042] As an optional embodiment: a flow guide seat 43 is provided in the receiving member 4 .

[0043] The guide seat 43 can guide the movement direction of the counterweight 5 so that it can be discharged from the lower channel 42. The guide seat 43 has an opening that gradually shrinks from top to bottom.

[0044] As an optional embodiment: chain rail connecting parts 8 are provided on both sides of the vehicle body 1.

[0045] The chain track connector 8 is used to connect the conveyor belt of the slope chain track type gravity energy storage system.

[0046] As an optional embodiment: an opening 11 is provided on the vehicle body 1 .

[0047] The provision of the opening 11 can facilitate the forklift to lift the vehicle body 1 and facilitate the adjustment of the position of the vehicle body 1 .

[0048] Example 1: Reference Figure 1 , the counterweight 5 is a ball 51; the ball 51 is a steel ball.

[0049] By controlling the number of balls 51 in the receiving member 4 and adjusting the load mass of the vehicle body 1 to a fixed opening and closing angle of 45°±2°, it is possible to ensure that the balls 51 can slide out smoothly without affecting the recovery and reuse of the vehicle body 1.

[0050] The upper stop member 6 is an upper opening and closing door 61; the lower stop member 7 is a lower opening and closing door 71. The upper opening and closing door 61 and the lower opening and closing door 71 can be automatically opened and closed by circuit control, and the opening angle is.

[0051] After the vehicle body 1 is transported to the stacking area, the balls 51 inside can be discharged by opening the lower opening and closing door 71 to adjust the overall load of the vehicle body 1 .

[0052] When in use, the pressure sensor 21 at the bottom of the vehicle body 1 cooperates with the start / stop loading signal of the stacking yard, and issues instructions of relative quality requirements according to the required power. According to the quality requirements, the pressure sensor 21 monitors the load of the vehicle body 1 in real time, and the upper opening and closing door 61 is opened to load the balls 51 into the container 4. After the pressure sensor 21 detects that the load meets the requirements, it issues an instruction to control the upper opening and closing door 61 to close.

[0053] Example 2: Reference Figure 2 , the counterweight 5 is water 52 ; the load mass of the vehicle body 1 is adjusted by controlling the capacity of the water 52 in the receiving member 4 .

[0054] The upper stop member 6 is an upper control valve 62 ; the lower stop member 7 is a lower control valve 72 .

[0055] The load mass of the vehicle body 1 is controlled by controlling the water content in the container 4 . The lower control valve 72 is used to drain the water in the vehicle body 1 , and the upper control valve 62 is opened when water is added to the container 4 .

[0056] After the vehicle body 1 is transported to the stacking area, the water 52 inside can be discharged by opening the lower control valve 72 to adjust the overall load of the vehicle body 1 .

[0057] When in use, the pressure sensor 21 at the bottom of the vehicle body 1 cooperates with the start / stop loading signal of the stacking yard, and issues instructions relative to the quality requirements based on the required power. According to the quality requirements, the pressure sensor 21 monitors the load of the vehicle body 1 in real time, and the upper control valve 62 is opened to load water 52 into the container 4. After the pressure sensor 21 detects that the load meets the requirements, it issues an instruction to control the upper control valve 62 to close.

[0058] The structure of the gravity energy storage system carrier vehicle that satisfies the flexible power adjustment requirements of the present application is based on a slope chain rail gravity energy storage system.

[0059] Reference Figure 4 The gravity energy storage system carrier vehicle structure 100 that meets the power flexible adjustment is connected to the chain rail through the chain rail connector 8 and the chain rail, and the gravity energy storage system carrier vehicle structure 100 that meets the power flexible adjustment is transported to the platform of the stacking area of ​​the slope chain rail type gravity energy storage system through the movement of the chain rail. A collecting member 200 is provided on the stacking area platform of the slope chain rail type gravity energy storage system, which is a bucket-shaped structure. A transfer mechanism 300 that can transfer the position of the vehicle body 1 is provided inside the collecting member 200, and two first conveying members 400 are provided below the collecting member 200. The ends of the two first conveying members 400 are commonly connected to a storage member 500, and two first conveying members 700 are connected above the storage member 500. A lifting member 600 that can move up and down is provided in the storage member 500, wherein a first opening and closing door 401 is provided at the end of the first conveying member 400, and a second opening and closing door 701 is provided at the end of the second conveying member 700.

[0060] After the car body 1 is transported to the platform of the stacking area, the car body 1 is moved to the top of the collecting part 200 by the transfer mechanism 300, and then the lower stop member 7 is opened to discharge the counterweight 5 inside the receiving part 4. The counterweight 5 is collected by the collecting part 200 and can enter the first conveying part 400. The lifting part 600 is now located at the bottom of the storage part 500. The counterweight 5 can be stored in the storage part 500 by opening the first switch door 401. When the counterweight 5 in the receiving part 4 is discharged, the transfer mechanism 300 removes the car body 1, and the lower stop member 7 on the car body 1 is closed. The first switch door 401 is closed, the vehicle body 1 that needs to generate electricity is located at the end of the second conveying member 700, and the upper stop member 6 on the vehicle body 1 is aligned with the end of the second conveying member 700. The upper stop member 6 is opened, and the counterweight 5 in the storage member 500 is lifted by the lifting member 600. After the counterweight 5 is lifted, it can enter the second conveying member 700. The counterweight 5 is filled into the receiving member 4 by opening the second switch door 701. During the filling of the counterweight 5, the load of the vehicle body 1 is calculated according to the power required to generate electricity, and the filling of the counterweight 5 is controlled based on the detection of the pressure sensor 21.

[0061] When the discharge demand is set to P1MW, the corresponding relationship between the mass m0 of the empty vehicle body 1 and the mass m1 of the mass block 3 is as follows:

[0062] P1=(m0+m1)gsinθ

[0063] When the system enters the discharge mode, a forklift from the upper stacking area loads mass 3 onto vehicle body 1. The system then switches to power generation mode. Under the influence of gravity, the mass 3 and vehicle body 1 combination descends along the ramp track, where the chain-track transmission mechanism drives the generator to generate electrical energy. After completing the rated power generation task, a forklift from the lower stacking area unloads mass 3 to a designated stacking area. Simultaneously, vehicle body 1 detaches from the main track and returns to the system's starting position along a dedicated bypass track, completing a complete charge-discharge cycle.

[0064] When the discharge demand is kP1MW, and k is a non-integer, since the power demand is a non-integer multiple of the power corresponding to a single mass block 3, the system will first load the mass block 3 that satisfies the power demand with the largest integer multiple, then adjust the mass of the counterweight 5 and place it into the container 4 to supplement the mass difference corresponding to the remaining power demand. The total mass m2 of the added counterweight 5 satisfies the following formula:

[0065]

[0066] When pressure sensor 21 detects that m2 meets the requirements of the above equation, it immediately issues a stop-loading signal, and upper cutoff 6 closes. Mass 3 and its vehicle body 1 descend the slope under the influence of gravity, driving the motor to generate electricity. After discharging, a forklift from the lower stacking area transports mass 3 to the stacking area. Simultaneously, vehicle body 1 disengages from the main track, and lower cutoff 7 opens, allowing counterweight 5 to be recovered. The recovered vehicle body 1 returns to the upper stacking area via the bypass track, awaiting the next work order.

[0067] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A gravity energy storage system carrier vehicle structure that satisfies flexible power adjustment, characterized by: The vehicle comprises a vehicle body (1), and a support wheel (2) provided on the vehicle body (1), wherein the support wheel (2) is provided with a pressure sensor (21) for detecting the load-bearing capacity of the support wheel (2); It also includes a container (4) symmetrically arranged on the vehicle body (1), a counterweight (5) is arranged in the container (4), and an upper stopper (6) and a lower stopper (7) are arranged on the container (4); By controlling the mass of the counterweight (5) in the receiving member (4), the load mass of the vehicle body (1) is adjusted; The load mass of the vehicle body (1) is adjusted according to the power required by the gravity energy storage system, and the pressure sensor (21) is used to detect the load mass of the vehicle body (1).

2. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 1 is characterized in that: It also includes a mass block (3) arranged on the vehicle body (1), and the mass block (3) is arranged between two symmetrically arranged receiving parts (4).

3. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 2 is characterized in that: The accommodating member (4) is provided with an upper channel (41) and a lower channel (42).

4. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 3 is characterized in that: A flow guide seat (43) is provided in the accommodating member (4).

5. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 4 is characterized in that: Chain rail connectors (8) are provided on both sides of the vehicle body (1).

6. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 5 is characterized in that: The vehicle body (1) is provided with an opening (11).

7. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to any one of claims 1 to 6, characterized in that: The counterweight (5) is a ball (51); The load mass of the vehicle body (1) is adjusted by controlling the number of the balls (51) in the receiving part (4).

8. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 7 is characterized in that: The upper stop member (6) is an upper opening and closing door (61); The lower stop member (7) is a lower opening and closing door (71).

9. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to any one of claims 1 to 6, characterized in that: The counterweight (5) is water (52); The load mass of the vehicle body (1) is adjusted by controlling the volume of the water (52) in the container (4).

10. The gravity energy storage system carrier vehicle structure capable of flexible power adjustment according to claim 9, characterized in that: The upper cut-off member (6) is an upper control valve (62); The lower cut-off member (7) is a lower control valve (72).

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