A gravity energy storage device based on longitudinal extension and lateral coupling and a method of arranging the same

Abstract

The application discloses a kind of based on longitudinal extension and transverse coupling's gravity energy storage device arrangement method, it is related to energy storage system technical field, including Z horizontal units in horizontal X direction, each unit is divided into 2 areas along horizontal Y direction and the intermediate passage between two areas, each unit is divided into c layer upper side area, d layer middle area and c layer lower side area from top to bottom, each area is continuously arranged with a equal interval trolley passage along Y direction, single trolley passage includes b equal span mass block unit, each unit range can accommodate i mass block body, trolley moves in the track beam in passage in X direction, to carry block body;Each trolley passage is equipped with a vertical shaft in X direction both ends, vertical shaft is equipped with elevator with built-in mass block body;Intermediate passage both ends are equipped with a generator;Generator Y is arranged with a set of power shaft on both sides, corresponding power shaft is connected with elevator by passing through the top mechanism pulley set of vertical shaft through traction belt. Reach the effect of meeting the energy storage capacity demand, while coordinating movement between each mechanism of system to realize safe and stable power output.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage systems, in particular to a gravity energy storage device based on longitudinal extension and transverse coupling and a layout method thereof. BACKGROUND

[0002] Since the beginning of the 21st century, countries around the world have been competing to develop new energy to replace traditional fossil fuels, which are severely polluting and increasingly scarce. Under the background of the national "double carbon" goal, the scale of renewable energy power generation such as wind and photovoltaic continues to expand. However, due to the unpredictable, intermittent, and random nature of new energy power generation output, the electricity generated cannot be fully consumed by the power system. In order to promote low-carbon energy transformation, the power industry has an urgent need for large-scale energy storage technology.

[0003] The commonly used energy storage technologies at present include pumped storage and chemical energy storage. Pumped storage is the main way to solve the peak-valley difficulty of the power system at present, but the development of pumped storage power stations requires suitable geographical conditions and water resources. In areas with high demand for power peak shaving, available site resources are often difficult to meet the construction requirements. Various battery energy storage power station technologies are mature and flexible in site selection, but the cost is high, there are environmental pollution, fire or explosion risks, and they cannot be fully deployed at present. Other energy storage technologies, such as compressed air energy storage, need to improve their technical maturity and do not yet have the conditions for large-scale commercial application. Gravity energy storage is a new type of energy storage technology, which has attracted widespread attention in recent years due to its low cost, flexible site selection, and high round-trip efficiency.

[0004] Chinese patent CN113482868A provides a modular adjustable power easy-to-expand gravity energy storage system, which uses a steel wire rope reel cylinder to hoist a heavy box. The coupling at the bottom of the device can connect adjacent units to achieve expansion. However, due to the low safety of the hoisting mechanism and the low efficiency of heavy object transfer, there is still room for improvement in this method.

[0005] Chinese patent CN111692055A provides a suspended gravity energy storage system with lower requirements for geographical conditions, which uses a guide groove and a row of hangers to achieve vertical lifting and horizontal movement of the heavy object. The heavy object runs completely independently in the passageway separated by the load-bearing wall, and the complex operation mode poses challenges to the round-trip efficiency and output stability of the system.

[0006] The Chinese patent CN113460841A proposes a gravity energy storage system based on shafts and tunnels, which uses automatic driving track trolleys placed in the shafts and tunnels to realize the transfer of heavy objects. Since each track trolley is equipped with an independent power supply and control system, it is difficult to achieve precise control when multiple trolleys run synchronously, and the overall reliability of the system is insufficient. The energy storage capacity of this technical solution depends on the internal conditions of the tunnel and is limited by geographical conditions, making it difficult to achieve large-scale application and modular expansion.

[0007] Considering the shortcomings of existing energy storage technologies, the technical problems to be solved by the present application mainly include the following three points:

[0008] (1) Traditional pumped storage power stations require suitable geographical conditions and water resources, and their energy storage capacity is directly proportional to the available height difference between the upper and lower reservoirs and the reservoir capacity. In areas with high demand for power peak shaving and frequency modulation, available sites are often insufficient to meet the construction requirements. More importantly, once a pumped storage power station is built, it cannot be expanded according to the actual energy storage capacity requirements.

[0009] (2) Existing gravity energy storage system technologies generally rely on mountain bodies, underground shafts, and other structures. Limited site resources not only make the device unable to achieve large-scale commercial application, but also limit the energy storage scale to some extent. Considering natural factors such as topography and geomorphology, the design scheme needs to be planned and designed according to the project site, which cannot form a replicable process layout scheme.

[0010] (3) There is no process layout method suitable for the coordinated operation of multiple mechanisms in existing gravity energy storage schemes. SUMMARY

[0011] The purpose of the present application is to provide a gravity energy storage device based on longitudinal extension and transverse coupling, which can meet the demand for energy storage capacity while coordinating the movement between the mechanisms in the system to achieve safe and stable power output.

[0012] The above technical purpose of the present application is achieved by the following technical solution:

[0013] A gravity energy storage device based on longitudinal extension and transverse coupling, characterized by comprising Z horizontal units in the horizontal X direction, each unit being divided into 2 zones along the horizontal Y direction and a middle channel between the two zones, and each unit being divided into c upper side regions, d middle regions, and c lower side regions from top to bottom,

[0014] Each zone is continuously arranged with a in the Y direction equidistant trolley channel, a single trolley channel includes b equidistant mass block units, each unit range can accommodate i mass block bodies, the trolley moves along the track beam in the channel in the X direction to carry the block body; each trolley channel is provided with a vertical shaft at both ends in the X direction, and the vertical shaft is provided with an elevator with built-in mass block bodies;

[0015] Each end of the middle channel is provided with a generator; both sides of the generator in the Y direction are arranged with a set of power shafts, and the corresponding power shafts are connected with the elevators by passing through the top mechanism pulley set of the vertical shaft through the traction belt.

[0016] The purpose of the present application is also to provide a layout method of a gravity energy storage device based on longitudinal extension and transverse coupling, which is realized by the following technical scheme:

[0017] A layout method of a gravity energy storage device based on longitudinal extension and transverse coupling, comprising the following steps:

[0018] S10: calculating the frame structure size according to the basic structure of the gravity energy storage device and the mass block size;

[0019] S20: determining the maximum unit module installed capacity based on the target installed capacity;

[0020] S30: ensuring that the number of generators remains unchanged, and based on the longitudinal extension of the unit module, the number of generators is doubled to increase the generator power;

[0021] S40: ensuring that the generator power remains unchanged, and based on the longitudinal extension, the number of generators is doubled to increase the transverse coupling of the gravity storage device;

[0022] S50: calculating the number of generators and the power of a single generator of the gravity energy storage device of the target installed capacity.

[0023] Further, the frame structure size calculated in step S10 includes a longitudinal axis network spacing e, e = L_m + I_v + W_c; wherein L_m is the mass block length, I_v is the design gap on both sides of the mass block; W_c is the column width;

[0024] The design gap on one side of the mass block is not less than Where H represents the height of the gravity storage device (mm), Y represents the visual system adjustment accuracy (mm), and S represents the mass block manufacturing accuracy (mm).

[0025] Further, the frame structure size calculated in step S10 includes a trolley channel layer height u, u = H_m + I_h + H_b, H_m is the mass block height, I_h is the net height allowance, and H_b is the single beam height; the net height allowance I_h is not less than 20 + (mass block height x 3 ‰ + S), and S represents the mass block manufacturing accuracy (mm).

[0026] Further, the frame structure size calculated in step S10 further includes a lateral axis net spacing f, f = i * (W_m + I_w), W_m is the mass block width, I_w is the mass block space reserved, not less than mass block width * 6‰ + 2S, S represents the manufacturing accuracy.

[0027] Further, step S20 specifically includes:

[0028] S21: Determine the target installed capacity P and the generator rated power operation time T; and preset initial parameters, including mass block density p, upper and lower area corresponding layer height difference h, mass block falling speed v, mass block unit storage block quantity i, mass block layer number c;

[0029] S22: The number of generators n is always even, and is initially assigned as 2, the maximum unit module size is calculated, and is represented by P_Unit.

[0030] Further, the P_Unit satisfies the equation P_Unit*2 r =P, and the device aspect ratio is close to 1, and the calculation deviation is ±0.1.

[0031] Further, S20 specifically includes:

[0032] ①Assign r, determine the unit module installed capacity P_Unit under the condition of r by the formula P_Unit=P / (2 r );

[0033] ②According to the mass block length L_m, width W_m, height H_m and known mass block density p in step S10, the mass of a single mass block m is calculated, which is represented as m=L_m*W_m*H_m* p;

[0034] According to the unit module installed capacity P_Unit determined in step S22 and the preset rated power operation time T, the upper and lower area corresponding layer height difference h, the total mass block weight M required is calculated, which is represented as M=P_Unit*T / (g*h), g represents the acceleration of gravity;

[0035] The number of mass blocks required by the unit module N is determined by the inequality N≥M / m;

[0036] ③According to the known unit module installed capacity P_Unit and the number of generators n, the power of a single generator P_G is determined, and the inequality P_G>P_Unit / n is established; based on the inequality a≤P_G / (mgv), the number of generator sets in the longitudinal axis direction of a single area is determined.

[0037] ④Based on the known required mass block quantity N, single-zone longitudinal axis generator set quantity a and mass block unit stored block body quantity i, the allocation of mass block unit quantity b and mass block layer quantity c is deduced, and the energy storage capacity demand is met;

[0038] ⑤The middle zone layer quantity d is determined according to the upper and lower zone corresponding layer height difference h, layer height u and mass block layer quantity c, and is expressed as d = (h / u)-c;

[0039] The gravity energy storage device height is determined by the formula H = u*(2c+d), if the device height exceeds the allowable range, return to adjust b, c and the upper and lower corresponding layer height difference h; the generator region width w and the elevator region length l are assigned, and the device length and width are calculated;

[0040] ⑥Based on the parameters determined in ⑤, the device length-width ratio is calculated, if the value exceeds the allowable range of 0.9 to 1.1, return to step ① to reassign r, reduce the unit module installed capacity P_Unit until it meets the basic conditions.

[0041] Further, the step S30 specifically comprises: keeping the initial set generator quantity unchanged, increasing the single generator power to twice the original standard to obtain a longitudinal extension gravity energy storage device based on the unit module; the obtained two-stage scheme generator quantity n' is 2, the single generator power P_G' is 2×P_G, and the installed capacity is doubled to 2×P_Unit.

[0042] Further, the step S40 specifically comprises: keeping the single generator power of the two-stage scheme unchanged, increasing the generator quantity to twice the two-stage scheme to obtain a transverse coupling gravity storage device based on longitudinal extension; the obtained three-stage scheme generator quantity n'' is 4, the single generator power P_G'' is 2×P_G, and the installed capacity is doubled to 2 2 ×P_Unit.

[0043] Further, the step S50 specifically comprises: determining the target installed capacity gravity energy storage device generator quantity n and single generator power P_G according to the rules shown in steps S30 and S40; at this time, the device length-width ratio is approximately 1 or 0.5.

[0044] Further, it further comprises step S60: limiting the generator quantity, adjusting the variable parameters to make the equipment motion timing reach the limit balance, and determining the process design scheme.

[0045] Furthermore, step S60 specifically includes: limiting the number of generators n and the power P_G of a single generator calculated in step S50; adjusting variable parameters, including the mass block density ρ, the height difference h between corresponding layers in the upper and lower regions, the falling speed v, and the number of mass block layers c, to achieve a limit balance in the equipment movement sequence, i.e., the loaded running time of the elevator + the unloaded return time of the elevator ≥ the loaded running time of the horizontal trolley + the unloaded return time of the horizontal trolley; and determining the process design scheme for the target installed capacity through the following process:

[0046] ① Calculate the mass m of a single mass block using the formula m=L_m*W_m*H_m*ρ; calculate the total weight M of the required mass blocks based on the target installed capacity P, the preset rated power operating time T, and the height difference h between the corresponding layers in the upper and lower areas, expressed as M=P*T / (g*h); determine the number N of mass blocks required for the target installed capacity using the inequality N≥M / m;

[0047] ②Based on the single generator power P_G calculated in step S50, the number of generator sets a in the longitudinal direction of a single zone is determined by the inequality a≤P_G / (mgv);

[0048] ③ By reverse-engineering the optimal allocation of the number of mass block units b and the number of mass block layers c, the scheme should at least meet the energy storage capacity requirements; wherein, the number of mass block layers c is always an even number;

[0049] ④ Determine the number of layers d in the middle area using the formula d=(h / u)-c, and determine the device height using the formula H=u*(2c+d). If the values ​​are out of range, return to adjust b, c and the height difference h between the upper and lower corresponding layers; assign the width w of the generator area and the length l of the elevator area to calculate the length and width of the device.

[0050] In summary, the present invention has the following beneficial effects:

[0051] (1) The device of this invention is a three-dimensional structure with a concrete frame structure, which has no special requirements for terrain, geology and other geographical conditions. Deserts, Gobi, and arid areas can all be used as construction sites. This invention also adopts a modular layout. A single device can meet the energy storage capacity requirements of 20 to 100 megawatt-hours. If the energy storage capacity exceeds this range or the energy storage requirements increase, the function can be expanded by replicating the device. This method is easy to implement and does not affect the overall energy storage effect.

[0052] (2) This invention provides a method for formulating a process layout scheme based on the installed capacity and rated power operating time. This method uses a proportionally scaled device as a benchmark. When the initial installed capacity is increased exponentially, the number of generators remains unchanged, and the power is increased to twice the original standard. When the installed capacity is increased exponentially a second time, the generator power remains unchanged, and the number of generators is increased to twice the original standard, and so on, until the process parameters for the target installed capacity are obtained. This method is minimally affected by natural factors (e.g., earthquake intensity) and is applicable to multiple application scenarios. The replicable design scheme enables the device to be used on a large scale for commercial applications.

[0053] (3) The present invention integrates the structural design into the process design, which facilitates the comprehensive consideration of the cooperation of multiple mechanisms, enables the coordinated operation of equipment, and ensures system safety, structural stability and continuous power output. Attached Figure Description

[0054] Figure 1 This is the process design flow of the present invention;

[0055] Figure 2 This is a plan view of the device of the present invention;

[0056] Figure 3 This is a front view of the trolley passage of the present invention;

[0057] Figure 4 This is a side view of the trolley passage of the present invention;

[0058] Figure 5 This is a schematic diagram of the expansion of the unit module of the present invention. Detailed Implementation

[0059] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on the present invention.

[0060] A process layout method for a gravity energy storage device based on longitudinal extension and lateral coupling includes the following steps:

[0061] S10. Set the basic structure of the gravity energy storage device, and calculate the frame structure design scheme based on the basic structure of the gravity energy storage device and the size of the mass block.

[0062] This embodiment specifically includes:

[0063] S11. The gravity energy storage device is defined as a three-dimensional structure without floor slabs and using a concrete frame structure. The top and sides of the building are equipped with an enclosure structure to protect the mass block and supporting equipment.

[0064] like Figure 1As shown, the device includes Z horizontal units with equal running distances in the east-west direction (horizontal X direction). Each unit is divided into two areas along the north-south direction (horizontal Y direction) and a central passage between the two areas. Each unit is divided from top to bottom into an upper c-layer area, a middle d-layer area, and a lower c-layer area.

[0065] Each zone has a series of equally spaced trolley channels arranged in a north-south direction; each trolley channel consists of b equally spaced mass block units, with i blocks stored within each unit, and a total of b*i mass blocks arranged in a single channel. The horizontal trolley 1 moves in the east-west direction along the track beam inside the channel; each trolley channel has a vertical shaft of constant length at both the east and west ends, and a lift with built-in mass blocks inside the shaft. The lift 2 and the built-in mass blocks move vertically along the shaft.

[0066] S12. The upper and lower regions each contain c layers of mass blocks, while the middle region has a total of d layers, to increase the height difference between the upper and lower regions. To ensure continuous power release, the layers are parallel and equally spaced. The mass block of the first layer in the upper region descends to the first layer in the lower region, and so on. The mass block of the cth layer in the upper region descends to the cth layer in the lower region. The corresponding number of layers in the upper and lower regions ensures that the height difference of the mass blocks is the same. c is always an even number so that the elevator descends alternately.

[0067] There are no trolleys or mass blocks in the middle channel. According to the energy storage capacity requirements, a generator with a capacity of 500 kilowatts to 60 megawatts is arranged on the ground at the east and west ends of the middle channel. On the north and south sides of the generator, a set of power shafts are arranged on the ground within the vertical shaft of the elevator. The corresponding power shafts are connected to the elevator through the pulley block of the top mechanism of the vertical shaft via traction belts, and are used to drive the up and down lifting of the mass blocks.

[0068] S13. Obtain the length L_m of the mass block according to the mold specifications, and calculate the trolley channel spacing e (i.e., longitudinal axis spacing) by combining the design gap I_v on both sides of the mass block and the column width W_c. e=L_m+I_v+W_c;

[0069] ① Determine I_v: Considering the construction accuracy of beams and columns, the accuracy of displacement control of mass blocks, and the manufacturing accuracy of mass blocks, the spacing between the mass blocks and the columns on both sides will be adjusted according to the actual situation of the project to ensure that the mass blocks do not collide with the structural frame. The design gap on one side of the mass block shall not be less than Otherwise, the trolley cannot pass normally when it is loaded (this design value and the specific designs below can be adjusted by the preset safety factor); when increasing the gap, in order to ensure the overlap area of ​​the mass block placed on the track beam, the width of the mass block resting on the load-bearing contact surface of the track beam on one side is increased to prevent the mass block from falling off the track beam during placement.

[0070] Where H represents the height of the storage device (mm), Y represents the adjustment accuracy of the vision system (mm), and S represents the manufacturing accuracy of the mass block (mm); the manufacturing accuracy depends on the processing technology and is an uncontrollable factor. The error is assumed to be within ±S millimeters. At the same time, considering the thermal expansion and contraction characteristics of the brick, an allowable length error of 3‰ is configured with reference to the thermal expansion and contraction ratio of concrete.

[0071] ② Determine W_c: The width of the column depends on the height of the gravity energy storage device, the seismic intensity, and the arrangement of the mass blocks. The seismic intensity is affected by the site conditions, and the main factors include earthquake magnitude, soil and geological conditions, building performance, topography, and groundwater level. This value can be calculated with reference to relevant standards. The arrangement of the mass blocks is affected by the number of layers and the energy storage capacity, and can be determined by pre-setting tables, etc.

[0072] S14. Obtain the height H_m of the mass block according to the mold specifications. Further combine the net height allowance I_h and the single beam height H_b to calculate the trolley passage floor height u = H_m + I_h + H_b. Considering the building over-limit requirements, the calculated floor height must not exceed the standard range.

[0073] ① Determine I_h: Based on the construction accuracy of beams and columns and the manufacturing accuracy of the mass block, determine the reserved height from the bottom of the upper beam after the trolley lifts the mass block under load to meet the trolley's passage requirements. The net height margin should not be less than 20 + (mass block height × 3‰ + S).

[0074] Where S represents the manufacturing precision of the mass block (mm), and the allowable height error is set at 3‰ with reference to the thermal expansion and contraction ratio of concrete;

[0075] S15. Obtain the width W_m of the mass block according to the mold specifications, and further calculate the horizontal axis grid spacing f by combining the reserved space I_w between the mass blocks and the column width W_c. f=i*(W_m+I_w);

[0076] ① Determine I_w: Based on the manufacturing precision of the mass block, determine the design gap in the width direction. To meet the placement requirements, the gap of a single mass block shall not be less than the width of the mass block × 6‰ + 2S, where S represents the manufacturing precision and a tolerance of 6‰ is allowed.

[0077] S20. Determine the maximum unit module installation scale with an aspect ratio close to 1 based on the target installation scale (an aspect ratio close to 1 can make the inter-mechanism coordinated operation effect optimal, the energy footprint lowest, and the structure stable and easy to couple modules).

[0078] Step S20 specifically involves:

[0079] S21. Referring to the installed capacity of new energy projects and the policy requirements for the configuration ratio of energy storage facilities and the energy storage / charging time, set the target installed capacity P and the rated power operation time of the generator T; at the same time, preset the initial parameters, namely, the mass block density ρ, the height difference between the corresponding layers in the upper and lower regions h, the mass block falling speed v, the number of blocks stored in the mass block unit i, and the number of mass block layers c.

[0080] S22. The number of generators n is always even, initially limited to 2. The size of the largest unit module with an aspect ratio close to 1 is calculated based on the following process and represented by P_Unit.

[0081] P_Unit has two conditions: a) It satisfies the equation P_Unit*2 r =P, where r is the average number of levels of P (r≥1; primary scheme r=0, installed capacity P_Unit; secondary scheme r=1, installed capacity 2P_Unit; tertiary scheme r=2, installed capacity 4P_Unit; and so on; the average number of levels is the number of times it doubles); b, the aspect ratio calculation deviation is ±0.1, making the overall unit device approximately square:

[0082] ① Assign the value r, using the formula P_Unit = P / (2 r Determine the unit module installation scale P_Unit under condition r;

[0083] ② Calculate the mass m of a single mass block based on the length L_m, width W_m, and height H_m of the mass block set in step S10 and the known mass block density ρ. The mass m is expressed by the formula m = L_m * W_m * H_m * ρ. Calculate the total weight M of the required mass blocks based on the unit module installation scale P_Unit determined in step S22①, the preset rated power operating time T, and the height difference h between the corresponding layers in the upper and lower areas. The total weight M is expressed by the formula M = P_Unit * T / (g * h), where g represents the gravitational acceleration, which is constant at 9.8 m / s². 2 The number of mass blocks N required for the unit module is determined by the inequality N≥M / m, and the decimal result is rounded up to the nearest integer in principle.

[0084] ③ Determine the power of a single generator P_G based on the known unit module installation scale P_Unit and the number of generators n, and establish the inequality P_G>P_Unit / n. Since in this embodiment, a single generator is used to drive 2a sets of power shaft systems on the same side, but only half of the power shafts operate at any given time, a single generator controls the descent of a mass blocks in a single operation. The power output of a single elevator is determined based on the mass m and the descent speed v of the mass blocks, and the number of generator sets a in the longitudinal direction of a single zone is determined based on the inequality a≤P_G / (mgv).

[0085] ④ Based on the known required number of mass blocks N, the number of generator sets a in the longitudinal direction of a single zone, and the number of blocks i stored in a mass block unit, the optimal allocation of the number of mass block units b and the number of mass block layers c is deduced. The scheme should at least satisfy the energy storage capacity requirement inequality; for structural stability considerations, the number of mass block layers c is always an even number.

[0086] ⑤ Determine the number of layers d in the middle area based on the height difference h between the upper and lower areas, the layer height u, and the number of layers of mass blocks c, expressed by the formula d = (h / u) - c; determine the height of the gravity energy storage device using the formula H = u * (2c + d). If the device height exceeds the allowable range, return to adjust b, c, and the height difference h between the upper and lower areas; assign values ​​to the width w of the generator area and the length l of the elevator area, and finally calculate the length and width of the device;

[0087] ⑥ Calculate the aspect ratio of the device based on the parameters determined in step ⑤. If the value exceeds the allowable range of 0.9 to 1.1, return to step ① to reassign r and reduce the unit module installation scale P_Unit until it meets its basic conditions.

[0088] S30. Ensure the number of generators remains unchanged, and increase the generator power by multiple times to obtain a vertically extended heavy storage device based on unit modules;

[0089] Keeping the initial number of generators unchanged, the power of a single generator is increased to twice the original standard to obtain a longitudinally extended gravity energy storage device based on unit modules; the resulting secondary scheme (i.e., the installed capacity is increased to 2×P_Unit) has 2 generators n' and a single generator power P_G' of 2×P_G.

[0090] S40. To ensure that the generator power remains constant, the number of generators can be increased exponentially based on a longitudinally extended transversely coupled heavy storage device.

[0091] Keeping the single generator power of the secondary scheme unchanged, the number of generators is increased to twice that of the secondary scheme, resulting in a laterally coupled heavy storage device based on vertical extension; the resulting tertiary scheme (i.e., the installed capacity is doubled to 2) 2 The number of generators n” of ×P_Unit is 4, and the power of a single generator P_G” is 2×P_G.

[0092] S50. Calculate the number of generators and the power of a single generator for the target installed capacity gravity energy storage device;

[0093] Based on the rules shown in steps S30 and S40, determine the number of generators n and the power P_G of a single generator for the target installed capacity gravity energy storage device; at this time, the aspect ratio of the device is approximately 1 or 0.5.

[0094] This allows us to determine the minimum number of generators needed, thus minimizing the cost of the device. Since the power of a single generator cannot be increased indefinitely, and considering the stability and ultimate bearing capacity of the drive shaft, the number of generators needs to be multiplied when the generator power reaches a certain value. This invention provides a simple and practical method for increasing the number of generators, making horizontal transport of the trolley convenient and ensuring that multiple mechanisms always operate in coordination.

[0095] S60. Limit the number of generators, adjust the variable parameters to achieve limit balance in the equipment operation sequence, and determine the process design scheme.

[0096] The number of generators n and the power of a single generator P_G calculated in step S50 are limited. The variable parameters (mass block density ρ, height difference between corresponding layers in the upper and lower areas h, falling speed v, number of mass block layers c) are adjusted to make the equipment movement sequence reach the limit balance, that is, the lifting elevator loaded running time + lifting elevator unloaded return time ≥ horizontal car loaded running time + horizontal car unloaded return time.

[0097] The adjustment methods are as follows: ① Keep the size of the mass block unchanged and increase its density ρ, so that the mass m of a single mass block increases and the number of mass blocks N required decreases; ② Increase the height difference h between the corresponding layers in the upper and lower regions, and simultaneously increase the total height H of the device; ③ Increase the falling speed v to increase the power generation of a single elevator; ④ Increase the number of mass block layers c, so that the number of mass block units b in the horizontal direction decreases.

[0098] The process design scheme for the target installed capacity is determined through the following steps:

[0099] ① Calculate the mass m of a single mass block using the formula m = L_m * W_m * H_m * ρ; calculate the total weight M of the required mass blocks based on the target installed capacity P, the preset rated power operating time T, and the height difference h between the corresponding layers in the upper and lower areas, expressed by the formula M = P * T / (g * h); determine the number N of mass blocks required for the target installed capacity using the inequality N ≥ M / m;

[0100] ② Determine the power of a single generator P_G based on the known target installed capacity P and the number of generators n; determine the number of generator sets a in the longitudinal direction of a single zone based on the inequality a≤P_G / (mgv);

[0101] ③ By reverse-engineering the optimal allocation of the number of mass block units (b) and the number of mass block layers (c), the scheme should at least meet the energy storage capacity requirements. For structural stability considerations, the number of mass block layers (c) is always an even number. (The main reason for recalculation is to significantly reduce the total cost of the device, including the cost of mass blocks, structural costs, and trolley costs. After testing, it was found that by determining the number of generators for the target installed capacity based on the above expansion method and further adjusting these four parameters, the device cost can be minimized.)

[0102] ④ Determine the number of layers d in the middle area using the formula d=(h / u)-c, and further determine the device height using the formula H=u*(2c+d). If the value is out of range, return to adjust b, c and the height difference h between the corresponding layers in the upper and lower areas; assign the width w of the generator area and the length l of the elevator area to calculate the device length and device width.

[0103] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the scope of its essence and protection. Such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A method for arranging a gravity energy storage device based on longitudinal extension and lateral coupling, characterized in that, The gravity energy storage device comprises Z horizontal units along the horizontal X direction. Each unit is divided into two zones along the horizontal Y direction, as well as an intermediate channel between the two zones. From top to bottom, each unit is divided into an upper c-layer region, a middle d-layer region, and a lower c-layer region. Each zone has a series of equally spaced trolley channels arranged along the Y direction. Each trolley channel includes b equally spaced mass block units. Each unit can accommodate i mass blocks. The trolley moves along the track beam in the X direction to transport the blocks. Each trolley channel has a vertical shaft at each end in the X direction, and the vertical shaft has a lift with a built-in mass block. A generator is installed at each end of the central passage; a sets of power shafts are arranged on both sides of the generator in the Y direction, and the corresponding power shafts are connected to the elevator via traction belts that pass around the pulley block of the top mechanism of the vertical shaft. The arrangement method includes the following steps: S10: Calculate the dimensions of the frame structure based on the basic structure of the gravity energy storage device and the dimensions of the mass block; S20: Determine the maximum unit module installation scale based on the target installation scale; specifically including: S21: Determine the target installed capacity P and the generator rated power operating time T; and preset initial parameters, including mass block density. The height difference h between the upper and lower regions, the falling speed v of the mass block, the number of blocks i stored in the mass block unit, and the number of layers c of the mass block; S22: The number of generators n is always even, initially assigned a value of 2, calculate the maximum unit module size and represent it through P_Unit; S30: Maintaining the same number of generators while doubling the generator power, a vertically extended gravity energy storage device based on unit modules is obtained; specifically, this includes: keeping the initially set number of generators unchanged, increasing the power of a single generator to twice the original standard, resulting in a vertically extended gravity energy storage device based on unit modules; the number of generators in the resulting secondary scheme... There are 2 units, with a single generator power of... for The installed capacity has increased several times to ; S40: Maintaining constant generator power, the number of generators is doubled to obtain a laterally coupled heavy storage device based on vertical extension; specifically, this includes: keeping the power of a single generator constant as set in the secondary scheme, increasing the number of generators to twice that of the secondary scheme, thus obtaining a laterally coupled heavy storage device based on vertical extension; the resulting tertiary scheme has the following generator numbers... There are 4 units, with a single generator power of... for The installed capacity has increased several times to ; S50: Calculate the number of generators and the power of a single generator for the target installed capacity gravity energy storage device.

2. The arrangement method of a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1, characterized in that: The frame structure dimensions calculated in step S10 include the longitudinal grid spacing e. Where L_m is the length of the mass block, I_v is the designed gap between the two sides of the mass block, and W_c is the width of the column. The design gap on one side of the mass block shall not be less than Where H represents the height of the heavy storage device, Y represents the adjustment accuracy of the vision system, and S represents the manufacturing accuracy of the mass block.

3. A method for arranging a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1 or 2, characterized in that: The frame structure dimensions calculated in step S10 include the trolley passage height u. H_m is the height of the mass block, I_h is the net height allowance, and H_b is the height of the single beam; the net height allowance I_h is not less than S represents the manufacturing precision of the mass block.

4. The arrangement method of a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1, characterized in that: The frame structure dimensions calculated in step S10 also include the transverse grid spacing f. W_m is the width of the mass block, and I_w is the reserved space between mass blocks, which is not less than... S represents manufacturing precision.

5. The arrangement method of a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1, characterized in that: The P_Unit satisfies the equation Furthermore, the aspect ratio of the device is close to 1, and the calculation deviation is ±0.

1.

6. A method for arranging a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1 or 5, characterized in that: S20 specifically includes: ① Assign the value r, using the formula Determine the unit module installation scale under condition r ; ②Based on the length L_m, width W_m, height H_m of the mass block in step S10 and the known density of the mass block Calculate the mass m of a single mass block, expressed as ; Based on the unit module installation scale determined in step S22 And the total weight M of the mass block required to calculate the preset rated power operating time T and the height difference h between the upper and lower areas is expressed as follows: g refers to gravitational acceleration; Through inequalities Determine the number N of mass blocks required for the unit module; ③ Based on the known unit module installation scale Given the number of generators n, determine the power P_G of a single generator and establish an inequality. Based on inequalities Determine the number 'a' of generator sets along the longitudinal axis of a single zone; ④ Based on the known required number of mass blocks N, the number of generator sets a in the longitudinal direction of a single zone, and the number of blocks i stored in a mass block unit, the allocation of the number of mass block units b and the number of mass block layers c is deduced in reverse, while meeting the energy storage capacity requirements. ⑤ Based on the height difference h between corresponding floors in the upper and lower areas, and the floor height The number of layers c in the mass block determines the number of layers d in the intermediate region, expressed as: ; Through formula Determine the height of the gravity energy storage device. If the device height exceeds the allowable range, return to adjust b, c, and the height difference h between the corresponding upper and lower floors. Assign values ​​to the generator area width w and the elevator area length l, and calculate the device length and width. ⑥ Based on the parameters determined in ⑤, calculate the aspect ratio of the device. If the value exceeds the allowable range of 0.9 to 1.1, return to step ① to reassign the value of r and reduce the unit module installation scale. Until its basic conditions are met.

7. The arrangement method of a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1, characterized in that: Step S50 specifically includes: determining the number of generators n and the power P_G of a single generator for the target installed capacity gravity energy storage device according to the rules shown in steps S30 and S40; at this time, the aspect ratio of the device is approximately 1 or 0.

5.

8. The arrangement method of a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 1, characterized in that: It also includes step S60: limiting the number of generators, adjusting variable parameters to achieve limit balance in the equipment movement sequence, and determining the process design scheme.

9. A method for arranging a gravity energy storage device based on longitudinal extension and lateral coupling according to claim 8, characterized in that: Step S60 specifically includes: limiting the number of generators n and the power P_G of a single generator calculated in step S50, and adjusting variable parameters, including the mass block density. The height difference h between corresponding layers in the upper and lower areas, the falling speed v, and the number of mass blocks c are used to make the equipment's movement sequence reach a limit balance, i.e., the lifting elevator's loaded running time + the lifting elevator's unloaded return time. The horizontal car's loaded operating time plus its unloaded return time; the process design scheme for the target installed capacity is determined through the following procedure: ① Through formula Calculate the mass m of a single mass block; calculate the total weight M of the required mass blocks based on the target installed capacity P, the preset rated power operating time T, and the height difference h between the corresponding upper and lower areas, expressed as follows: ; through inequalities Determine the number of mass blocks N required for the target installed capacity; ②Based on the single generator power P_G calculated in step S50, the inequality is used to... Determine the number 'a' of generator sets along the longitudinal axis of a single zone; ③ By reverse-engineering the optimal allocation of the number of mass block units (b) and the number of mass block layers (c), the scheme should at least meet the energy storage capacity requirements. Among them, the number of mass block layers c is always an even number; ④ Through formula Determine the number of layers d in the intermediate area using the formula Determine the device height. If the value is outside the range, return to adjust b, c, and the height difference h between the corresponding upper and lower floors; assign values ​​to the generator area width w and the elevator area length l, and calculate the device length and width.

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