Energy storage integrated box and safety control system and method thereof

Abstract

The invention relates to the technical field of energy storage equipment, in particular to an energy storage integrated box and a safety control system and method.The energy storage integrated box comprises a box body, a box door hinged to the box body, an air conditioning unit installed on the box door, a plurality of partition plates arranged in the box body from top to bottom and energy storage modules installed on the partition plates; the multiple partition plates are all slidably connected with the box body, a heat dissipation groove is formed in the upper end of the box body, an exhaust mechanism is arranged in the heat dissipation groove, and connecting rods are symmetrically and fixedly connected between every two adjacent partition plates. And the safety control system is combined with an algorithm to carry out safety control on the energy storage integrated box. The safety control method is a control step of the safety control system. The energy storage integrated box has the following beneficial effects that the safety coefficient of the energy storage integrated box can be improved, and an all-around safety protection process can be carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage equipment, and in particular to an integrated energy storage box and a safety control system and method thereof. Background Art

[0002] The integrated energy storage box integrates energy storage batteries, a battery management system, an energy storage converter, electrical equipment, and a monitoring system into a single container. It features high integration, a compact footprint, and easy installation. As a key device for energy storage and conversion, the integrated energy storage box is widely used in power system peak and frequency regulation, renewable energy grid integration, microgrid construction, emergency backup power, and other fields, playing an increasingly important role in modern power systems.

[0003] However, as the scale of integrated energy storage boxes expands and their intensity of use increases, safety issues are becoming increasingly prominent. The energy storage modules within the integrated box generate significant heat during long-term, high-load operation. Because multiple modules are typically tightly packed within the box, this creates a closed environment where heat cannot dissipate quickly. If the thermal management system within the box is poorly designed or malfunctions, heat cannot be dissipated promptly and effectively, causing the temperature of the energy storage modules to continue to rise.

[0004] When the temperature of an energy storage module reaches a critical threshold, the chemicals inside react violently, triggering thermal runaway, which can lead to smoke and even fire. Since integrated energy storage boxes are often installed in locations that are difficult to monitor in real time, such as outdoor substations and underground distribution rooms, workers are often unable to detect abnormalities and intervene immediately, significantly increasing safety risks.

[0005] Existing energy storage box safety protection systems typically utilize single-function devices such as independent smoke detectors, temperature monitors, and fire extinguishers. These devices operate independently and lack effective linkage mechanisms, resulting in slow response times and limited protection in emergency situations. For example, when a smoke detector detects smoke, it only triggers an audible and visual alarm but fails to automatically shut off the energy storage module power supply or activate the fire extinguisher. Furthermore, after the fire extinguisher is activated, the heat dissipation channels remain open, allowing the extinguishing agent to leak through the vents, significantly reducing firefighting efficiency.

[0006] Furthermore, existing safety protection systems often rely on preset threshold triggering, lacking intelligent monitoring and judgment capabilities, and are prone to false alarms or missed alarms due to environmental changes. Thermal runaway can develop extremely quickly under high-load conditions, with the time window from smoke generation to fire spread often being only tens of seconds. This places extremely high demands on the response speed and accuracy of the protection system.

[0007] Therefore, there is an urgent need to develop a safety control system for an energy storage integrated box that can achieve multiple linkage protections. When an abnormality occurs in the energy storage module, it can automatically perform a series of coordinated actions such as smoke sensing, power cut-off, heat dissipation channel closure, and inert gas release, thereby quickly and effectively eliminating safety hazards and ensuring the safety of energy storage equipment and the surrounding environment. Summary of the Invention

[0008] The purpose of the present invention is to provide an integrated energy storage box to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: an integrated energy storage box, comprising a box body, a box door hinged on the box body, an air conditioning unit mounted on the box door, a plurality of partitions arranged from top to bottom inside the box body, and an energy storage module mounted on the plurality of partitions, wherein the plurality of partitions are slidably connected to the box body, a heat dissipation groove is provided at the upper end of the box body, an exhaust mechanism is provided inside the heat dissipation groove, connecting rods are symmetrically fixedly connected between two adjacent partitions, a shielding mechanism is provided between the uppermost partition and the heat dissipation groove, and a fire extinguishing mechanism is provided on the box body; The fire extinguishing mechanism includes two L-shaped tubes, which are symmetrically fixed and inserted into the inner wall of the box, and a group of nozzles are connected to the outer walls of the two L-shaped tubes. The two groups of nozzles are fixed through the two inner side surfaces of the box, and the corresponding ends of the two L-shaped tubes are connected to a horizontal tube. An air supply mechanism is provided between the two horizontal tubes and the box.

[0010] Slide grooves are provided on both sides of the interior of the box body at positions corresponding to the partitions, and the partitions are slidably fitted into the two slide grooves.

[0011] The exhaust mechanism includes a filter and two cooling fans. The two cooling fans are symmetrically fixed on the inner wall of the cooling trough. The filter is fixedly connected to the upper edge of the inner wall of the cooling trough. Smoke sensors are fixedly installed at the lower ends of the two cooling fans.

[0012] The shielding mechanism includes two push plates and two guide pillars, the two push plates are symmetrically fixedly connected to the upper end of the uppermost partition, the two guide pillars are symmetrically fixedly connected to the upper edge of the inner wall of the box, and an L-shaped plate is slidably sleeved on the outer walls of the two guide pillars, the upper end of the L-shaped plate is in contact with the inner top of the box, and the L-shaped plate is close to the heat dissipation groove, and a spring 1 is fixedly connected between the vertical part of the L-shaped plate and the inner wall of the box, the two springs 1 are respectively slidably sleeved on the outer walls of the two guide pillars, the two push plates are in contact with the end of the L-shaped plate away from the heat dissipation groove, and a limiting mechanism is provided between the two guide pillars and the L-shaped plates.

[0013] The limiting mechanism includes a square groove, which is opened on the outer wall of the guide column, and a limiting block is slidably inserted into the square groove. The upper end of the limiting block is triangular, and an inclined surface at the upper end of the limiting block is in contact with the vertical wall of the L-shaped plate, and a spring 2 is fixedly connected between the lower end of the limiting block and the square groove.

[0014] The air supply mechanism includes a support frame and six gas cylinders, three of which are fixedly mounted on the lower edges of the two inner side surfaces of the box body with the other three gas cylinders, and the air outlet ends of the three gas cylinders and the other three gas cylinders are connected with connecting pipes, and the top ends of the three connecting pipes and the other three connecting pipes are respectively connected with the outer walls of the two horizontal pipes, the support frame is fixedly connected to the inner bottom end of the box body, and a motor is fixedly mounted on the upper end of the support frame, the output shaft end of the motor is fixedly connected with a stud, the end of the stud away from the motor is rotatably connected to the inner wall of the box body, the outer wall of the stud is threaded with a slider, the upper end of the slider is fixedly connected to a splicing plate, a fixing frame is fixedly connected between the upper end of the splicing plate and the lower end of the partition located below, a trigger mechanism is provided between the splicing plate and the six gas cylinders, and the motor is electrically connected to the smoke detector.

[0015] The air supply mechanism also includes two guide rods, which slide symmetrically and penetrate the inner wall of the slider, and one end of the two guide rods is fixedly connected to the inner wall of the box, and the other end of the two guide rods is fixedly connected to a U-shaped plate, and the lower ends of the two U-shaped plates are fixedly connected to the inner bottom end of the box.

[0016] The trigger mechanism includes two tooth plates and six connecting disks. The two tooth plates are respectively fixedly connected to the two ends of the splicing plate, and the six connecting disks are respectively fixedly connected to the knob ends of the six gas tanks. One side wall of the six connecting disks is fixedly connected with a gear, and the other side wall of the six connecting disks is fixedly connected with multiple arc plates, each of which is fitted in the knob recess of its corresponding gas tank, three of the gears are meshed with one of the tooth plates, and the other three gears are meshed with the other tooth plate.

[0017] Another object of the present invention is to provide a safety control system and method for an energy storage integrated box based on multiple linkage protections. When the energy storage module is locally overheated and produces smoke due to high-load operation, the system can quickly sense and trigger a linkage protection mechanism to achieve emergency power-off of the energy storage module, rapid closure of the heat dissipation slot, and efficient release of inert gas, thereby effectively suppressing the fire source, avoiding the occurrence of fire, and improving the safety factor of the energy storage integrated box during use.

[0018] To achieve the above objectives, the present invention provides a safety control system for an integrated energy storage box based on multiple linkage protection, including a smoke sensing and linkage triggering algorithm module, a motor control algorithm module, an inert gas release algorithm module, and a heat sink closure control algorithm module. These four modules work together to form a complete safety protection system.

[0019] The smoke sensing and linkage triggering algorithm module is used to calculate the current smoke concentration change and trigger the linkage protection mechanism. The calculation formula is ΔS(t)=S current (t)-S baseline , where ΔS(t) represents the change in current smoke concentration, S current (t) is the smoke concentration detected by the smoke sensor in real time, in ppm, S baseline is the reference concentration value set by the system. threshold When S threshold It is a preset trigger threshold, usually set in the range of 5-10ppm according to the energy storage module type and environmental conditions.

[0020] The motor control algorithm module is used to calculate the torque required by the motor and drive the slider to move to cut off the power to the energy storage module. The torque calculation formula is T motor =(F load ·p) / (2π·η mechanical ), where T motor is the output torque of the motor, in N·m, F load is the total load of the slider and the energy storage module it carries, in N, p is the pitch of the thread, in mm / turn, η mechanical The efficiency of the mechanical transmission system is typically 0.7-0.85. By precisely calculating and controlling the motor torque, the system can quickly move the slider in an emergency, driving the energy storage module to power off and blocking the energy source that could cause the fault to spread.

[0021] The inert gas release algorithm module is used to control the opening of the gas tank valve and the inert gas release process. The calculation formula of the gas flow is Q gas =A nozzle ·C d ·√(2·ΔP / ρ gas ), where Q gas is the volume flow rate of inert gas, in m 3 / s,A nozzle is the cross-sectional area of the nozzle, in m 2 , C d is the flow coefficient of the nozzle, usually 0.6-0.9, ΔP is the pressure difference at both ends of the nozzle, in Pa, ρ gas is the density of the inert gas in kg / m3 This algorithm enables the inert gas to be released at an optimal rate, quickly reaching the required concentration to suppress the fire source while avoiding gas waste and excessive box pressure caused by too rapid release.

[0022] The heat sink closure control algorithm module is used to manage the sliding process of the L-shaped plate to close the heat sink. The sliding speed of the L-shaped plate is calculated as v slide =√(2·F spring ·d spring / m plate ), where v slide is the sliding speed of the L-shaped plate, in m / s, F spring is the restoring force generated by the spring, in N, d spring The stroke of the spring release, in m, m plate is the mass of the L-shaped plate, in kg. By quickly and accurately sealing the heat dissipation slots, the system can prevent the released inert gas from leaking from the heat dissipation channel, ensuring fire extinguishing efficiency.

[0023] The smoke sensing and linkage triggering algorithm module of the present invention also includes a dynamic benchmark update mechanism, and its update formula is S baseline (t)=α·S baseline (t-1) + (1-α) · S(tn:t-1), where α is a smoothing factor ranging from 0.85 to 0.95, and S(tn:t-1) represents the average smoke concentration over the past n time points. This dynamic baseline update mechanism enables the system to adapt to environmental changes, reducing false alarms while maintaining high sensitivity.

[0024] The motor control algorithm module of the present invention also includes the calculation of slider acceleration and movement time, and the calculation formula is a slide =(T motor ·2π·η mechanical ) / (m total ·p)-μg and t slide =√(2·d slide / a slide ), where a slide is the acceleration of the slider, in m / s 2 , m total is the total mass of the slider and the energy storage module, in kg, μ is the sliding friction coefficient, and g is the acceleration due to gravity, which is 9.8 m / s 2 , t slide The time required for the slider to move is in seconds, d slide is the total distance the slider moves, in meters. Through these calculations, the system can precisely control the slider's movement, enabling the energy storage module to be powered off in the shortest possible time.

[0025] The inert gas release algorithm module of the present invention also includes the calculation of the gas tank pressure change and diffusion time, and the calculation formula is P(t)=P0·e^(-Q gas t / V0) and T diffusion =V box / (Q gas ·n nozzle ·η diffusion ), where P(t) is the pressure in the gas tank at time t, in Pa, P0 is the initial pressure, in Pa, and V0 is the volume of the gas tank, in m 3 , T diffusion is the gas diffusion time, in seconds, V box is the internal volume of the energy storage box, in m 3 , n nozzle is the number of nozzles, η diffusion The diffusion efficiency ranges from 0.6 to 0.85. These calculations can help the system evaluate the gas release state and diffusion effect in real time, providing precise control of the fire extinguishing process.

[0026] The heat sink closure control algorithm module of the present invention also includes spring force calculation and L-shaped plate motion equation, and its calculation formula is F spring =k·x,m plate ·dv slide / dt=F spring -F friction and F friction =μ·m plate g cos(θ), where k is the spring stiffness coefficient in N / m, x is the compression displacement of the spring in m, and dv slide / dt is the acceleration of the L-shaped plate, in m / s 2 , F friction is the friction force in N, and θ is the slideway inclination in degrees. The above formula enables the system to precisely control the movement of the L-shaped plate, allowing the heat sink to be closed quickly and reliably.

[0027] The present invention also includes a fire extinguishing efficiency calculation module, and its calculation formula is E extinguish =(1-e^(-λ·C gas / C critical ))·(1-e^(-μ·T diffusion )), where E extinguish is the fire extinguishing efficiency, ranging from 0 to 1, C gas is the actual gas concentration, in %, C critical is the critical extinguishing concentration (in %), and λ and μ are fitting parameters. This module enables the system to evaluate the fire extinguishing effect in real time and optimize the gas release control strategy.

[0028] The present invention also includes a heat sink sealing performance index calculation module, and its calculation formula is P sealing =(1-Δ gap / W duct )·(1-e^(-ν·v slide )), where P sealing is the closing performance index, with a value of 0-1, Δ gap W is the gap width after closing, in mm. duct is the width of the heat sink in mm, and ν is the velocity influence coefficient. This module enables the system to evaluate how tightly the heat sink is sealed so that the inert gas does not leak from the heat dissipation channel.

[0029] A safety control method for an energy storage integrated box based on multiple linkage protection includes the following steps: monitoring the smoke concentration inside the energy storage integrated box and calculating the change, and using the formula ΔS(t)=S current (t)-S baseline Determine whether it exceeds the preset threshold S threshold ; When the change exceeds the threshold, calculate the motor torque T motor =(F load ·p) / (2π·η mechanical ) and start the motor to drive the slider to move and cut off the power to the energy storage module; control the L-shaped plate to slide and close the heat dissipation slot, and its sliding speed is determined by the formula v slide =√(2·F spring ·d spring / m plate ) calculation, where F spring is the spring restoring force; the inert gas is released to suppress the fire source, and the gas flow rate is calculated by the formula Q gas =A nozzle ·C d ·√(2·ΔP / ρ gas ) control and calculate the gas diffusion time T diffusion =V box / (Q gas ·n nozzle ·η diffusion ); The system maintains an emergency state and continuously monitors internal temperature changes to calculate the fire extinguishing efficiency E extinguish =(1-e^(-λ·C gas / C critical ))·(1-e^(-μ·T diffusion )).

[0030] The advantage of the present invention lies in that, through the mutual cooperation of the heat dissipation groove, exhaust mechanism, connecting rod, shielding mechanism, fire extinguishing mechanism and air supply mechanism, firstly, when the energy storage integrated box generates local high temperature and smoke due to long-term high-load use, it can sense it in the first time, and firstly, it can cut off the power supply to multiple energy storage modules in the first time, and protect the energy storage modules in the first time; secondly, it can quickly seal the heat dissipation groove and cooperate with the rapid entry of inert gas, and the inert gas can quickly fill the interior of the energy storage integrated box, and the inert gas will not be discharged along the heat dissipation groove. According to the characteristics of the inert gas, the fire source can be fully suppressed, the occurrence of fire can be avoided, and safety hazards can be avoided, thereby improving the safety factor of the energy storage integrated box when in use.

[0031] Through the synergistic effects of smoke sensing and linkage triggering algorithms, motor control algorithms, inert gas release algorithms, and heat sink closure control algorithms, the integrated energy storage box achieves comprehensive safety protection. The system can detect the earliest signs of abnormal smoke production in the energy storage module and immediately cut off the module's power supply to prevent the fault from escalating. Simultaneously, it quickly seals the heat sink and releases an appropriate amount of inert gas, effectively suppressing potential ignition sources and preventing fire accidents. Compared to traditional protection measures, this invention significantly shortens response time and greatly improves fire extinguishing efficiency, effectively ensuring the safety of the integrated energy storage box and its surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the fire extinguishing mechanism of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center A; Figure 4 A diagram showing the positional relationship between the fire extinguishing mechanism, the partition plate, and the push plate of the present invention; Figure 5 It is a bottom sectional view of the box body and the guide pillars of the present invention, and a positional relationship diagram between the push plate and the L-shaped plate; Figure 6 For the present invention Figure 5 A magnified view of the structure at point B in the middle; Figure 7 This is a diagram showing the slider, splicing plate, studs and guide rods of the present invention; Figure 8 This is a disassembled diagram of the gas tank and the connecting plate of the present invention; Figure 9 This is a schematic diagram of the overall structure of the energy storage integrated box safety control system of the present invention; Figure 10 This is a workflow diagram of the smoke sensing and linkage triggering algorithm module in the present invention; Figure 11 This is a signal processing flow chart of the motor control algorithm module in the present invention.

[0033] In the accompanying drawings, the list of components represented by each reference number is as follows: 1. Filter; 2. Box door; 3. Air conditioning unit; 4. Gas tank; 5. Partition; 6. Energy storage module; 7. Box body; 8. Stud; 9. Fixing frame; 10. Connecting pipe; 11. Slide; 12. L-shaped pipe; 13. Horizontal pipe; 14. Tooth plate; 15. Motor; 16. Support frame; 17. Arc plate; 18. Connecting plate; 19. Gear; 20. Push plate; 21. Nozzle; 22. Connecting rod; 23. L-shaped plate; 24. Guide column; 25. Cooling fan; 26. Heat dissipation groove; 27. Limit block; 28. Spring 1; 29. Square groove; 30. Spring 2; 31. Splicing plate; 32. U-shaped plate; 33. Slider; 34. Guide rod; 35. Smoke detector. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] Example 1: The present invention provides a technical solution: Figure 1 - Figure 8 The energy storage integrated box shown includes a box body 7, a box door 2 hinged on the box body 7, an air conditioning unit 3 installed on the box door 2, a plurality of partitions 5 arranged inside the box body 7 from top to bottom, and an energy storage module 6 installed on the plurality of partitions 5, the plurality of partitions 5 are all slidably connected to the box body 7, a heat dissipation groove 26 is opened at the upper end of the box body 7, an exhaust mechanism is provided inside the heat dissipation groove 26, connecting rods 22 are symmetrically fixedly connected between adjacent two partitions 5, a shielding mechanism is provided between the uppermost partition 5 and the heat dissipation groove 26, and a fire extinguishing mechanism is provided on the box body 7; The fire extinguishing mechanism includes two L-shaped tubes 12, which are symmetrically fixed and inserted into the inner wall of the box body 7, and the outer walls of the two L-shaped tubes 12 are connected to a group of nozzles 21. The two groups of nozzles 21 are fixed through the two side surfaces of the interior of the box body 7. The corresponding ends of the two L-shaped tubes 12 are connected to a horizontal tube 13, and an air supply mechanism is provided between the two horizontal tubes 13 and the box body 7.

[0036] Slide grooves 11 are provided on both sides of the interior of the box body 7 corresponding to the partition plate 5 , and the partition plate 5 is in sliding engagement with the two slide grooves 11 .

[0037] The exhaust mechanism includes a filter 1 and two cooling fans 25 . The two cooling fans 25 are symmetrically fixed on the inner wall of the heat dissipation groove 26 . The filter 1 is fixedly connected to the upper edge of the inner wall of the heat dissipation groove 26 . Smoke detectors 35 are fixedly installed at the lower ends of the two cooling fans 25 .

[0038] The shielding mechanism includes two push plates 20 and two guide pillars 24. The two push plates 20 are symmetrically fixedly connected to the upper end of the uppermost partition 5, and the two guide pillars 24 are symmetrically fixedly connected to the upper edge of the inner wall of the box body 7. The outer walls of the two guide pillars 24 are slidably sleeved with an L-shaped plate 23. The upper end of the L-shaped plate 23 is in contact with the inner top of the box body 7, and the L-shaped plate 23 is close to the heat dissipation groove 26. A spring 28 is fixedly connected between the vertical part of the L-shaped plate 23 and the inner wall of the box body 7. The two springs 28 are respectively slidably sleeved on the outer walls of the two guide pillars 24. The two push plates 20 are in contact with the end of the L-shaped plate 23 away from the heat dissipation groove 26. A limiting mechanism is provided between the two guide pillars 24 and the L-shaped plate 23.

[0039] The limiting mechanism includes a square groove 29, which is opened on the outer wall of the guide column 24, and a limiting block 27 is slidably inserted into the square groove 29. The upper end of the limiting block 27 is triangular, and an inclined surface at the upper end of the limiting block 27 is in contact with the vertical wall of the L-shaped plate 23, and a spring 2 30 is fixedly connected between the lower end of the limiting block 27 and the square groove 29.

[0040] The air supply mechanism includes a support frame 16 and six gas cylinders 4, three of which are fixedly mounted on the lower edges of the two side surfaces of the interior of the box body 7 with the other three gas cylinders 4, and the gas outlet ends of the three gas cylinders 4 and the other three gas cylinders 4 are connected with connecting pipes 10, wherein the tops of the three connecting pipes 10 and the other three connecting pipes 10 are respectively connected to the outer walls of the two horizontal pipes 13, the support frame 16 is fixedly connected to the inner bottom end of the box body 7, and the upper end of the support frame 16 is fixedly mounted with a motor 15, the output shaft end of the motor 15 is fixedly connected with a stud 8, the end of the stud 8 away from the motor 15 is rotatably connected to the inner wall of the box body 7, the outer wall of the stud 8 is threadedly sleeved with a slider 33, the upper end of the slider 33 is fixedly connected with a splicing plate 31, a fixing frame 9 is fixedly connected between the upper end of the splicing plate 31 and the lower end of the partition 5 located below, a trigger mechanism is provided between the splicing plate 31 and the six gas cylinders 4, and the motor 15 is electrically connected to the smoke detector 35.

[0041] The air supply mechanism also includes two guide rods 34, which slide symmetrically through the inner wall of the slider 33, and one end of the two guide rods 34 is fixedly connected to the inner wall of the box body 7, and the other end of the two guide rods 34 is fixedly connected to the U-shaped plate 32, and the lower ends of the two U-shaped plates 32 are fixedly connected to the inner bottom end of the box body 7.

[0042] The trigger mechanism includes two tooth plates 14 and six connecting discs 18. The two tooth plates 14 are respectively fixedly connected to the two ends of the splicing plate 31, and the six connecting discs 18 are respectively fixedly connected to the knob ends of the six gas cylinders 4. One side wall of the six connecting discs 18 is fixedly connected with a gear 19, and the other side wall of the six connecting discs 18 is fixedly connected with a plurality of arc plates 17. Each arc plate 17 is fitted into the knob recess of its corresponding gas tank 4, three of which are meshed with one of the tooth plates 14, and the other three gears 19 are meshed with the other tooth plate 14.

[0043] Working Principle: When the door 2 is closed and the cabinet 7 is in operation, the air conditioning unit 3 is activated to deliver cool air into the cabinet 7. The two cooling fans 25 are also activated to discharge the air inside the cabinet 7 upward along the heat dissipation slots 26 and the filter 1, thereby forming convection and effectively cooling the multiple energy storage modules 6. Each energy storage module 6 is connected to its corresponding partition 5 via a snap-fit connection. The above is all well-known existing technology and will not be elaborated on.

[0044] When the box body 7 is under high-load operation for a long time, multiple energy storage modules 6 will also generate a large amount of heat. At this time, since multiple energy storage modules 6 are arranged closely, it is difficult for the air-conditioning unit 3 and the cooling fan 25 to quickly discharge such heat, which will cause local excessive heat in multiple energy storage modules 6. When the chemical substances inside the energy storage module 6 react violently due to local high temperature, resulting in thermal runaway of the energy storage module 6 and causing smoke, the smoke sensors 35 under the two cooling fans 25 will capture the smoke at the first time, and then trigger the smoke sensors 35. The smoke sensors 35 will send a signal to the motor 15, which will start at this time and drive the stud 8 to rotate. The stud 8 will drive the slider 33 to move on the outer wall of the two guide rods 34 toward the box door 2.

[0045] It should be noted that the slider 33 will also drive the fixed frame 9 to move together through the splicing plate 31, and the fixed frame 9 will drive multiple partitions 5, multiple connecting rods 22 and multiple energy storage modules 6 to move toward the box door 2. The energy storage module 6 is in contact with the box body 7 and is energized. Then the contacts of the multiple energy storage modules 6 will leave the conductor inside the box body 7, and then the multiple energy storage modules 6 will be powered off immediately.

[0046] It should also be noted that the partition 5 at the top will drive the two push plates 20 to move together, and the two push plates 20 will push the L-shaped plate 23 to slide on the outer walls of the two guide pillars 24, and the L-shaped plate 23 will squeeze the triangular ends of the two limit blocks 27, referring to Figure 6, the L-shaped plate 23 will squeeze an inclined surface of the triangular end. Under the action of the squeezing force, each limit block 27 will move down in its corresponding square groove 29 and squeeze the spring 2 30. At this time, under the action of the two springs 1 28 (the two springs 1 28 are originally in a compressed state, and the elastic force of the spring 1 28 is less than the elastic force of the spring 2 30, so when the limit block 27 and the L-shaped plate 23 are Figure 6 In the position relationship shown, the L-shaped plate 23 and the limit block 27 are in a state of abutment with each other, and the limit block 27 will not move downward). The L-shaped plate 23 will quickly slide outside the two guide pillars 24 toward the door 2, and finally the L-shaped plate 23 will seal the heat dissipation slot 26.

[0047] It should also be noted that the slider 33 will also drive the two tooth plates 14 to move together through the splicing plate 31, and each tooth plate 14 will drive the three meshing gears 19 to rotate, and each gear 19 will drive the connecting disk 18 connected to it to rotate, and each connecting disk 18 will drive the multiple curved plates 17 connected to it to rotate, and the multiple curved plates 17 at each location will turn the knobs of the corresponding gas tanks 4, thereby opening the valves of all the gas tanks 4. The gas tanks 4 are filled with inert gas, and the inert gas will enter the two horizontal tubes 13 through the connecting pipe 10, and will enter the two L-shaped tubes 12, and finally be ejected from the two sets of nozzles 21, combined with Figure 4 It can be seen that the inert gas sprayed by the two groups of nozzles 21 can quickly fill the entire interior of the box 7.

[0048] It is worth mentioning that when the energy storage integrated box generates local high temperature and smoke due to long-term high-load use, it can sense it at the first time, and first of all, it can cut off the power to multiple energy storage modules 6 at the first time, protect the energy storage module 6 at the first time, and seal the heat dissipation groove 26, and cooperate with the rapid entry of inert gas. The inert gas can quickly fill the interior of the energy storage integrated box, and the inert gas will not be discharged along the heat dissipation groove 26. According to the characteristics of the inert gas, the fire source can be fully suppressed, the occurrence of fire can be avoided, and safety hazards can be avoided, thereby improving the safety factor of the energy storage integrated box when in use.

[0049] Example 2: like Figures 9-11 As shown, the present invention also provides an energy storage integrated box safety control system and method based on multiple linkage protection, which adopts the above-mentioned energy storage integrated box.

[0050] The safety control system mainly includes four interrelated algorithm modules: smoke perception and linkage triggering algorithm module, motor control algorithm module, inert gas release algorithm module and heat sink closure control algorithm module.

[0051] The smoke sensing and linkage triggering algorithm module primarily consists of a smoke sensor 35 and related computing units. Smoke sensor 35 is fixedly mounted at the bottom of the cooling fan 25 and can monitor the smoke concentration inside the energy storage box in real time. The core of this algorithm module is to calculate the change in the current smoke concentration to determine whether there is an abnormality. The formula for calculating the change in smoke concentration is:

[0052] ΔS(t)=S current (t)-S baseline ; Among them, ΔS(t) represents the change in current smoke concentration, S current (t) is the smoke concentration detected by the smoke sensor in real time, in ppm, S baseline The baseline concentration value set by the system. By comparing the difference between the current concentration and the baseline concentration, the interference caused by environmental factors can be effectively eliminated and the accuracy of detection can be improved.

[0053] When ΔS(t)>S threshold When the system triggers the linkage protection mechanism, S threshold is the preset trigger threshold. In practical applications, S threshold The setting needs to be adjusted according to the energy storage module type and environmental conditions, and should be within the range of 5-10ppm. A value that is too low will lead to an increase in false alarms, while a value that is too high will delay the response to abnormal conditions.

[0054] In order to enable the system to adapt to changes in different working environments, the present invention also adopts a dynamic benchmark update mechanism, and its update formula is: S baseline (t)=α·S baseline (t-1)+(1-α)·S(tn:t-1); Here, α is a smoothing factor, ranging from 0.85 to 0.95, which controls the speed of updating the baseline value. S(tn:t-1) represents the average smoke concentration over the past n time points. This allows the baseline value to slowly adapt to environmental changes while preventing drastic changes due to short-term fluctuations, thus ensuring the stability and sensitivity of the system's detection.

[0055] After detecting an abnormal situation, the motor control algorithm module controls the motor 15 to drive the slider 33 to move, thereby achieving emergency power off of the energy storage module 6. The relationship between motor power, torque, and angular velocity can be expressed as:

[0056] P motor =T motor ω; Among them, P motor is the output power of the motor, in W, T motoris the output torque of the motor, in N·m, and ω is the angular velocity of the motor, in rad / s. By setting the motor power, the motor can respond quickly in emergency situations.

[0057] In the present invention, the motor drives the stud 8 to rotate, and the stud 8 is threadedly connected to the slider 33, thereby converting the rotational motion into the linear motion of the slider. The relationship between the slider movement distance and the number of thread rotations is:

[0058] d slide =n_thread·p; Among them, d slide is the total distance the slider moves, in mm, n_thread is the number of threads rotated, and p is the thread pitch, in mm / turn. This is used to calculate the number of turns the motor needs to rotate to move the slider to the specified position and complete the power-off operation of the energy storage module.

[0059] In order to start and accelerate the motor smoothly, the required torque needs to be calculated. The relationship between the motor's required torque and the load is:

[0060] T motor =(F load ·p) / (2π·η mechanical ); Among them, F load is the total load of the slider and the energy storage module it carries, in N, η mechanical is the efficiency of the mechanical transmission system, typically 0.7-0.85. The above formula takes into account the effects of load, pitch, and mechanical efficiency on the required torque, enabling the system to accurately calculate the motor torque required under specific conditions to enable the slider to move quickly and smoothly.

[0061] The acceleration and movement time of the slider can be calculated using the following formula: a slide =(T motor ·2π·η mechanical ) / (m total ·p)-μg; t slide =√(2·d slide / a slide ); Among them, a slide is the acceleration of the slider, in m / s 2 , m total is the total mass of the slider and the energy storage module, in kg, μ is the sliding friction coefficient, and g is the acceleration due to gravity, which is 9.8 m / s 2 , t slideThe time required for the slider to move is in seconds. The above formula enables the system to predict the slider's motion state and the required time, providing a time reference for emergency power-off operations, ensuring that the power-off operation is completed within the specified time.

[0062] The inert gas release algorithm module controls the release process of the inert gas in the gas tank 4. The relationship between the flow rate of the inert gas and the nozzle parameters and the pressure difference is:

[0063] Q gas =A nozzle ·C d ·√(2·ΔP / ρ gas ); Among them, Q gas is the volume flow rate of inert gas, in m 3 / s,A nozzle is the cross-sectional area of the nozzle, in m 2 , C d is the flow coefficient of the nozzle, usually 0.6-0.9, ΔP is the pressure difference at both ends of the nozzle, in Pa, ρ gas is the density of the inert gas in kg / m 3 The above formula is based on the principles of fluid mechanics and takes into account the combined effects of nozzle geometry, gas properties, and pressure difference on flow rate, enabling the system to precisely control the release rate of the inert gas.

[0064] During the gas release process, the pressure in the gas tank will change with time, and its changing pattern can be expressed as: P(t)=P0·e^(-Q gas t / V0); Where P(t) is the pressure in the gas tank at time t, in Pa, P0 is the initial pressure, in Pa, and V0 is the volume of the gas tank, in m 3 This exponential decay relationship reflects the changing trend of the gas tank pressure during the gas release process, enabling the system to monitor the gas tank pressure in real time and avoid safety hazards caused by insufficient flow due to too low pressure or excessive pressure.

[0065] The time required for the inert gas to diffuse throughout the box can be estimated as: T diffusion =V box / (Q gas ·n nozzle ·η diffusion ); Among them, T diffusion is the gas diffusion time, in seconds, V box is the internal volume of the energy storage box, in m 3 , n nozzle is the number of nozzles, η diffusion= is the diffusion efficiency, ranging from 0.6 to 0.85. Diffusion efficiency is affected by factors such as nozzle layout, internal tank structure, and gas characteristics. Using the above formula, the system can estimate the time required for the inert gas to fill the entire tank, which serves as a basis for fire extinguishing effectiveness.

[0066] The heat sink closure control algorithm module manages the sliding process of the L-shaped plate 23 to close the heat sink 26 and prevent the inert gas from leaking out. According to Hooke's law, the relationship between spring force and compression displacement is:

[0067] F spring =k·x; Among them, F spring is the restoring force generated by the spring, in N, k is the spring stiffness coefficient, in N / m, and x is the compression displacement of the spring, in m. By selecting a spring with the appropriate stiffness, the system can provide the L-shaped plate with sufficient power to slide quickly.

[0068] The motion process of the L-shaped plate can be expressed by Newton's second law as follows: m plate ·dv slide / dt=F spring -F friction ; Among them, m plate is the mass of the L-shaped plate in kg, dv slide / dt is the acceleration of the L-shaped plate, in m / s 2 , F friction is the friction force, with the unit of N. This differential equation describes the acceleration process of the L-shaped plate under the action of spring force and friction force, and is the basis for analyzing the dynamic characteristics of the L-shaped plate.

[0069] The friction force during sliding can be calculated as: F friction =μ·m plate ·g·cos(θ); Where μ is the friction coefficient and θ is the slideway inclination angle (in degrees). This formula takes into account the effects of the L-shaped plate's mass, slideway inclination, and friction coefficient on friction, accurately reflecting the frictional resistance under actual operating conditions.

[0070] When the stopper 27 is released, the final sliding speed of the L-shaped plate can be calculated by the energy conservation principle as follows: v slide =√(2·F spring ·d spring / m plate ); Among them, d springis the spring release stroke, in meters. The above formula reflects the process of converting the spring potential energy into the kinetic energy of the L-shaped plate and is used to estimate the final velocity of the L-shaped plate, enabling it to quickly reach the designated position to close the heat sink.

[0071] The present invention also includes a fire extinguishing efficiency calculation module for evaluating the effectiveness of inert gas fire extinguishing. The relationship between fire extinguishing efficiency and gas concentration and diffusion time can be expressed as:

[0072] E extinguish =(1-e^(-λ·C gas / C critical ))·(1-e^(-μ·T diffusion )); Among them, E extinguish is the fire extinguishing efficiency, ranging from 0 to 1, C gas is the actual gas concentration, in %, C critical is the critical extinguishing concentration (in %), and λ and μ are fitting parameters determined by experimental data. This reflects the influence of gas concentration and diffusion time on the extinguishing effect, demonstrating the nonlinear characteristics of the actual fire extinguishing process.

[0073] The calculation formula for the heat sink sealing performance index is: P sealing =(1-Δ gap / W duct )·(1-e^(-ν·v slide )); Among them, P sealing is the closing performance index, with a value of 0-1, Δ gap W is the gap width after closing, in mm. duct is the width of the heat sink in mm, and ν is the speed influence coefficient. The above formula takes into account the influence of the gap size and the sliding speed of the L-shaped plate on the sealing performance. The faster the speed, the tighter the seal and the lower the risk of leakage.

[0074] In actual working process, the multi-link protection method of the present invention is as follows: When the energy storage module inside the energy storage integrated box is locally overheated due to high load operation and produces smoke, the smoke sensor 35 under the cooling fan will detect the smoke concentration S in real time. current (t), and through the formula ΔS(t)=S current (t)-S baseline Calculate the concentration change. When the change exceeds the preset threshold S threshold When the smoke sensor 35 sends a trigger signal to the motor 15.

[0075] Motor 15 starts immediately after receiving the signal. According to formula T motor =(F load ·p) / (2π·ηmechanical ) calculates the required torque and begins to rotate, driving stud 8. The rotation of stud 8 drives slider 33 along the outer walls of two guide rods 34 toward door 2. Slider 33, through splicing plate 31, drives fixed frame 9, which in turn drives the multiple partitions 5, multiple connecting rods 22, and multiple energy storage modules 6 toward door 2.

[0076] Energy storage modules 6 are powered by contacts in contact with the conductors inside box 7. When multiple energy storage modules 6 move, their contacts separate from the conductors inside box 7, providing immediate power-off protection. Simultaneously, the topmost partition 5 moves the two push plates 20, which push the L-shaped plate 23 to slide along the outer walls of the two guide pillars 24.

[0077] The L-shaped plate 23 compresses the triangular ends of the two stoppers 27, causing each stopper 27 to move downward within its corresponding square slot 29 and compress the second spring 30. At this point, under the force of the two first springs 28, the L-shaped plate 23 quickly slides outside the two guide posts 24 toward the door 2, ultimately sealing the heat dissipation slot 26 and preventing the subsequent release of inert gas from leaking through the heat dissipation channel.

[0078] At the same time, the slider 33 also drives the two tooth plates 14 to move together through the splicing plate 31. Each tooth plate 14 drives the three meshing gears 19 to rotate, and each gear 19 drives the connected connecting disk 18 to rotate. Each connecting disk 18 drives the connected multiple arc plates 17 to rotate. The multiple arc plates 17 at each location will rotate the corresponding knob of the gas tank 4, thereby opening the valves of all gas tanks 4.

[0079] Gas tank 4 contains inert gas. When the valve is opened, the inert gas flows through connecting pipe 10 into two transverse pipes 13, then into two L-shaped pipes 12, and finally out of two sets of nozzles 21. The ejected inert gas quickly fills the entire interior of housing 7. Because heat dissipation slots 26 are sealed, the inert gas does not leak out, maintaining the required concentration to suppress fire sources and effectively preventing fires.

[0080] The entire coordinated protection process, from smoke detection to emergency power outage, to heat sink sealing and inert gas release, is a closed-loop control system that operates automatically without human intervention. The system's response time is typically less than 3 seconds, significantly faster than traditional single-protection devices. This effectively controls localized high temperatures before a fire spreads, preventing more serious accidents.

[0081] In order to verify the above process, the present invention also provides an example calculation to verify the algorithm flow of the present invention: 1. Initial parameter setting A set of parameters based on the technical characteristics and operating environment of the energy storage integrated box are selected for calculation and analysis.

[0082] Smoke sensing module parameters: The baseline smoke concentration under normal working environment (S baseline ):2.0ppm; The smoke concentration detected at the current moment (S current ):8.5ppm; Trigger threshold (S threshold ):6.0ppm; Dynamic benchmark update smoothing factor (α): 0.90; Smoke concentrations at the past five time points: [2.1, 2.0, 2.2, 2.3, 2.1] ppm.

[0083] Motor control module parameters: Total load of slider and energy storage module (F load ):350N; Thread pitch (p): 5mm / turn = 0.005m / turn; Motor speed (ω): 300 rad / s; Mechanical transmission efficiency (η mechanical ):0.80; Total mass of slider and energy storage module (m total ):40kg; Sliding friction coefficient (μ): 0.15; Gravitational acceleration (g): 9.8 m / s 2 ; The distance the slider moves when the power is turned off (d slide ):0.10m.

[0084] Inert gas release module parameters: Nozzle cross-sectional area (A nozzle ):7.85×10 -5 m 2 (10mm diameter); Nozzle flow coefficient (C d ):0.75; Initial pressure of gas tank (P0): 10.0×10 6 Pa (10MPa); Nozzle outlet pressure: 1.01×10 5 Pa (atmospheric pressure); Pressure difference between the two ends of the nozzle (ΔP): 9.9×10 6 Pa; Inert gas density (ρ gas ):1.65kg / m 3(Heptafluoropropane); Gas tank volume (V0): 0.01m 3 ; Internal volume of energy storage box (V box ):35m 3 ; Number of nozzles (n nozzle ):6; Diffusion efficiency (η diffusion ):0.75; Critical extinguishing concentration (C critical ):7.0%; Actual gas concentration (C gas ):8.5%; Fire extinguishing efficiency fitting parameter (λ): 4.2; Fire extinguishing efficiency fitting parameter (μ): 0.3.

[0085] Heat sink enclosure module parameters: Spring stiffness coefficient (k): 2500N / m; Spring compression displacement (x): 0.04m; L-shaped plate mass (m plate ):1.5kg; Slide inclination angle (θ): 0°; Spring release stroke (d spring ):0.04m; Gap width after closure (Δ gap ):0.5mm; Heat sink width (W duct ):200mm; Speed influence coefficient (ν): 0.8.

[0086] 2. Algorithm step calculation process Smoke sensing and linkage triggering algorithm calculation First calculate the change in current smoke concentration: ΔS(t)=S current (t)-S baseline ; ΔS(t)=8.5ppm-2.0ppm=6.5ppm.

[0087] Determine whether the linkage protection mechanism is triggered: ΔS(t)>S threshold ;6.5ppm>6.0ppm (condition is met); therefore, the system triggers the linkage protection mechanism.

[0088] At the same time, the system can also calculate the new benchmark value according to the dynamic benchmark update formula: Average smoke concentration over the past five time points: S(tn:t-1)=(2.1+2.0+2.2+2.3+2.1) / 5=2.14ppm; New baseline value: S baseline (t)=α·S baseline (t-1)+(1-α)·S(tn:t-1);S baseline (t)=0.90×2.0+(1-0.90)×2.14S baseline (t)=1.8+0.214=2.014ppm.

[0089] The new reference value is used for calculating the smoke variation at the next moment. In the present invention, since the protection mechanism has been triggered, this updated value is mainly used for monitoring after the system is reset.

[0090] Motor control algorithm calculation First, calculate the required torque of the motor: T motor =(F load ·p) / (2π·η mechanical ); T motor =(350N×0.005m) / (2π×0.80); T motor =1.75 / 5.027=0.348N·m.

[0091] Calculate the motor output power: P motor =T motor ω; P motor =0.348N·m×300rad / s=104.4W.

[0092] Calculate the slider acceleration: a slide =(T motor ·2π·η mechanical ) / (m total ·p)-μg a slide =(0.348N·m×2π×0.80) / (40kg×0.005m)-0.15×9.8m / s 2 ; a slide =(0.348×6.283×0.80) / (40×0.005)-1.47; a slide =1.747 / 0.2-1.47=8.735-1.47=7.265m / s 2 .

[0093] Calculate the time required for the slider to move: t slide =√(2·d slide / a slide ); t slide =√(2×0.10 / 7.265); t slide =√(0.2 / 7.265)=√0.0275=0.166s.

[0094] The motor can move the slider into position within 166 milliseconds to complete the power-off operation of the energy storage module, which is far lower than the required system response time (3 seconds).

[0095] Inert gas release algorithm calculation Calculate the inert gas flow rate: Q gas =A nozzle ·C d ·√(2·ΔP / ρ gas ); Q gas =7.85×10 -5 m 2 ×0.75×√(2×9.9×10 6 Pa / 1.65kg / m 3 ); Q gas =7.85×10 -5 ×0.75×√(19.8×10 6 / 1.65); Q gas =5.89×10 -5 ×√12×10 6 =5.89×10 -5 ×3464.1Q gas =0.204m 3 / s (each nozzle).

[0096] Calculate the pressure in the gas tank at t=1s: P(t)=P0·e^(-Q gas t / V0)P(1)=10.0×10 6 Pa·e^(-0.204m 3 / s×1s / 0.01m 3 )P(1)=10.0×10 6 e^(-20.4)=10.0×10 6 1.37×10⁻ 9 P(1)=13.7Pa.

[0097] This indicates that the pressure in the gas tank drops dramatically within one second. As the pressure drops, the flow rate also decreases rapidly, so the gas will not be completely released within one second. To obtain more accurate data, it is necessary to consider the time-varying flow rate. This is done to simplify the calculations in this invention. In an actual system, the gas tank capacity and pressure will be designed based on the desired fire extinguishing concentration and duration.

[0098] Calculate gas diffusion time: T diffusion =V box / (Q gas ·n nozzle ·η diffusion ) T diffusion =35m 3 / (0.204m 3 / s×6×0.75) T diffusion =35 / 0.918=38.1s.

[0099] Considering that the actual flow rate decreases as the pressure drops, the above time needs to be corrected. Assuming the average flow rate is 40% of the initial flow rate: the actual diffusion time ≈ T diffusion / 0.4=38.1s / 0.4=95.3s.

[0100] This time is relatively long. In practical applications, the diffusion time can be shortened by increasing the number of nozzles, increasing the nozzle diameter, or using multiple gas tanks to release gas simultaneously.

[0101] Heat sink closure control calculation Calculate the restoring force generated by the spring: F spring =k·x; F spring =2500N / m×0.04m=100N.

[0102] Calculate the friction during sliding: F friction =μ·m plate ·g·cos(θ); F friction =0.15×1.5kg×9.8m / s 2 ×cos(0°); F friction =0.15×1.5×9.8×1=2.205N.

[0103] The equation of motion of the L-shaped plate (acceleration calculation): dv slide / dt=(F spring-F friction ) / m plate ; dv slide / dt=(100N-2.205N) / 1.5kgdv slide / dt=97.795 / 1.5=65.2m / s 2 .

[0104] Calculate the final sliding velocity of the L-shaped plate: v slide =√(2·F spring ·d spring / m plate ); v slide =√(2×100N×0.04m / 1.5kg)v slide =√(8 / 1.5)=√5.33=2.31m / s.

[0105] The L-shaped plate slides at a speed of 2.31 m / s, which is enough to quickly close the heat sink. Next, calculate the time it takes for the L-shaped plate to move from the beginning to completely close the heat sink:

[0106] Assume that the distance the L-shaped plate needs to move is 0.2m:t close =d close / v avg ≈2·d close / v slide t close ≈2×0.2m / 2.31m / s=0.173s.

[0107] This indicates that the heat sink can be completely sealed in about 173 milliseconds, preventing the inert gas from leaking from the heat dissipation channel.

[0108] Fire extinguishing efficiency calculation Calculate fire extinguishing efficiency: E extinguish =(1-e^(-λ·C gas / C critical ))·(1-e^(-μ·T diffusion )); E extinguish =(1-e^(-4.2×8.5% / 7.0%))·(1-e^(-0.3×38.1)); E extinguish =(1-e^(-4.2×1.214))·(1-e^(-11.43)); E extinguish =(1-e^(-5.099))·(1-1.09×10 -5 ); Eextinguish =(1-0.0061)·0.99999E extinguish =0.9939×0.99999=0.9938≈99.4%.

[0109] This result shows that the system's fire extinguishing efficiency can reach 99.4%, which is much higher than the efficiency of traditional fire extinguishing systems (usually around 70-80%).

[0110] Calculation of heat sink sealing performance indicators Calculate the heat sink sealing performance index: P sealing =(1-Δ gap / W duct )·(1-e^(-ν·v slide )); P sealing =(1-0.5mm / 200mm)·(1-e^(-0.8×2.31m / s)); P sealing =(1-0.0025)·(1-e^(-1.848)); P sealing =0.9975×(1-0.1575); P sealing =0.9975×0.8425=0.8404≈84.0%.

[0111] The sealing performance index is 84.0%. The sealing effect of the heat dissipation slot is good, and the leakage of inert gas is controlled at a low level, which can ensure that the fire extinguishing concentration is maintained within an effective range.

[0112] 3. Results Analysis Through the above calculations, we can get the following results: System response time analysis: The response time from smoke detection to each system component is as follows: Smoke detection and trigger judgment: microsecond level; energy storage module power-off time: 166 milliseconds; heat sink closure time: 173 milliseconds; total system response time: approximately 340 milliseconds; response time is far lower than the system design target (3 seconds) and the response time of traditional protection systems (usually 5-10 seconds), and can effectively control local high temperature problems before the fire spreads.

[0113] Analysis of protection effect: Energy storage module power-off effect: Through calculation, it can be seen that the motor can quickly provide sufficient torque (0.348N·m) and power (104.4W), and complete the power-off operation of the energy storage module within 166 milliseconds, effectively blocking the energy source of the fault spread. Heat dissipation slot sealing effect: The L-shaped plate slides at a speed of 2.31m / s and completes the heat dissipation slot sealing within 173 milliseconds. The sealing performance index reaches 84.0%, which can effectively prevent inert gas from leaking from the heat dissipation channel. Inert gas fire extinguishing effect: The system can provide each nozzle with 0.204m 3 While the system takes a long time to fully diffuse (approximately 95.3 seconds), it achieves a fire extinguishing efficiency of 99.4%, far exceeding that of conventional fire extinguishing systems. In practice, this diffusion time can be shortened by optimizing the number and location of nozzles.

[0114] The above demonstrates the advancement and practicality of this invention in the field of energy storage box safety protection. The system can detect when an energy storage module is abnormally producing smoke and immediately cut off the module's power supply to prevent the fault from escalating. It also quickly seals the heat sink and releases an appropriate amount of inert gas, effectively suppressing potential fire sources and preventing fire accidents.

[0115] This invention is not only applicable to containerized energy storage systems, but can also be expanded to various types of energy storage equipment, such as home energy storage systems, electric vehicle battery packs, and communication base station backup power supplies. By adjusting algorithm parameters and mechanical structure dimensions, this invention can flexibly adapt to energy storage equipment of different sizes and types, and has broad application prospects.

[0116] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An integrated energy storage box, comprising a box body, a door hinged to the box body, an air conditioning unit mounted on the door, a plurality of partitions arranged from top to bottom inside the box body, and an energy storage module mounted on the plurality of partitions, characterized in that: The plurality of partitions are all slidably connected to the box body, a heat dissipation groove is provided at the upper end of the box body, an exhaust mechanism is provided inside the heat dissipation groove, connecting rods are symmetrically fixedly connected between two adjacent partitions, a shielding mechanism is provided between the uppermost partition and the heat dissipation groove, and a fire extinguishing mechanism is provided on the box body; The fire extinguishing mechanism includes two L-shaped tubes, which are symmetrically fixed and inserted into the inner wall of the box, and a group of nozzles are connected to the outer walls of the two L-shaped tubes. The two groups of nozzles are fixed through the two inner side surfaces of the box, and the corresponding ends of the two L-shaped tubes are connected to a horizontal tube. An air supply mechanism is provided between the two horizontal tubes and the box.

2. The integrated energy storage box according to claim 1, characterized in that: Slide grooves are provided on both sides of the interior of the box body corresponding to the partitions, and the partitions slide in cooperation with the two slide grooves; the exhaust mechanism includes a filter and two cooling fans, and the two cooling fans are symmetrically fixed on the inner wall of the cooling trough, and the filter is fixedly connected to the upper edge of the inner wall of the cooling trough, and smoke sensors are fixedly installed at the lower ends of the two cooling fans.

3. The integrated energy storage box according to claim 1, characterized in that: The two guide rails are connected to each other at the upper end of the L-shaped plate, and the two guide rails are connected to each other with a spring, and the two guide rails are connected with each other at the lower end of the L-shaped plate.

4. The integrated energy storage box according to claim 3, characterized in that: The air supply mechanism includes a support frame and six gas tanks, three of which are fixedly mounted on the lower edges of the two inner side surfaces of the box body with the other three gas tanks, and the gas outlet ends of the three gas tanks and the other three gas tanks are connected with connecting pipes, wherein the top ends of the three connecting pipes and the other three connecting pipes are respectively connected with the outer walls of the two horizontal pipes, the support frame is fixedly connected to the inner bottom end of the box body, and a motor is fixedly mounted on the upper end of the support frame, the output shaft end of the motor is fixedly connected with a stud, the end of the stud away from the motor is rotatably connected to the inner wall of the box body, and the stud The outer wall of the column is threaded with a slider, the upper end of the slider is fixedly connected to a splicing plate, the upper end of the splicing plate is fixedly connected to the lower end of the partition located below with a fixing frame, a trigger mechanism is provided between the splicing plate and the six gas cylinders, and the motor is electrically connected to the smoke sensor; the air supply mechanism also includes two guide rods, the two guide rods are symmetrically slid and inserted into the inner wall of the slider, and one end of the two guide rods are fixedly connected to the inner wall of the box, and the other ends of the two guide rods are fixedly connected to a U-shaped plate, and the lower ends of the two U-shaped plates are fixedly connected to the inner bottom end of the box.

5. The integrated energy storage box according to claim 4, characterized in that: The trigger mechanism includes two tooth plates and six connecting disks. The two tooth plates are respectively fixedly connected to the two ends of the splicing plate, and the six connecting disks are respectively fixedly connected to the knob ends of the six gas tanks. One side wall of the six connecting disks is fixedly connected with a gear, and the other side wall of the six connecting disks is fixedly connected with multiple arc plates, each of which is fitted in the knob recess of its corresponding gas tank, three of the gears are meshed with one of the tooth plates, and the other three gears are meshed with the other tooth plate.

6. A safety control system for an integrated energy storage box based on multiple linkage protection applied to the integrated energy storage box according to any one of claims 1 to 5, characterized in that: include: The smoke sensing and linkage triggering algorithm module is used to calculate the current smoke concentration change and trigger the linkage protection mechanism. The calculation formula of the smoke concentration change is: ΔS(t)=S current (t)-S baseline Among them, ΔS(t) represents the change in current smoke concentration, S current (t) is the smoke concentration detected by the smoke sensor in real time, S baseline is the reference concentration value set by the system. When ΔS(t)>S threshold When the linkage protection mechanism is triggered; The motor control algorithm module is used to calculate the torque required by the motor and drive the slider to move to cut off the power of the energy storage module. The calculation formula of the motor torque is: T motor =(F load ·p) / (2π·η mechanical ) Among them, T motor is the output torque of the motor, F load is the total load of the slider and the energy storage module it carries, p is the pitch of the thread, η mechanical is the efficiency of the mechanical transmission system; The inert gas release algorithm module is used to control the opening of the gas tank valve and the inert gas release process. The calculation formula of the inert gas flow is: Q gas =A nozzle ·C d ·√(2·ΔP / ρ gas ) Among them, Q gas is the volume flow rate of inert gas, A nozzle is the cross-sectional area of the nozzle, C d is the flow coefficient of the nozzle, ΔP is the pressure difference at both ends of the nozzle, ρ gas is the density of the inert gas; The heat sink closure control algorithm module is used to manage the sliding process of the L-shaped plate to close the heat sink. The sliding speed of the L-shaped plate is calculated as: v slide =√(2·F spring ·d spring / m plate ) where v slide is the sliding speed of the L-shaped plate, F spring is the restoring force generated by the spring, d spring is the stroke of spring release, m plate is the mass of the L-shaped plate.

7. The energy storage integrated box safety control system based on multiple linkage protection according to claim 6 is characterized in that: The smoke sensing and linkage triggering algorithm module also includes a dynamic benchmark update mechanism, and its update formula is: S baseline (t)=α·S baseline (t-1)+(1-α)·S(tn:t-1) where α is a smoothing factor ranging from 0.85 to 0.95, and S(tn:t-1) represents the average smoke concentration at the past n time points; The motor control algorithm module also includes the calculation of slider acceleration and movement time, and the calculation formula is: slide =(T motor ·2π·η mechanical ) / (m total ·p)-μgt slide =√(2·d slide / a slide ) Among them, a slide is the acceleration of the slider, m total is the total mass of the slider and the energy storage module, μ is the sliding friction coefficient, g is the acceleration due to gravity, t slide is the time required for the slider to move, d slide The total distance the slider moves.

8. The energy storage integrated box safety control system based on multiple linkage protection according to claim 6 is characterized in that: The inert gas release algorithm module also includes the calculation of the gas tank pressure change and diffusion time, and the calculation formula is: P(t)=P0·e^(-Q gas t / V0)T diffusion =V box / (Q gas ·n nozzle ·η diffusion ) Where P(t) is the pressure in the gas tank at time t, P0 is the initial pressure, V0 is the volume of the gas tank, T diffusion is the gas diffusion time, V box is the internal volume of the energy storage box, n nozzle is the number of nozzles, η diffusion is the diffusion efficiency; The heat sink closure control algorithm module also includes spring force calculation and L-shaped plate motion equation, and its calculation formula is: F spring =k·x·m plate ·dv slide / dt=F spring -F friction ; F friction =μ·m plate g cos(θ) where k is the spring stiffness coefficient, x is the compression displacement of the spring, and dv slide / dt is the acceleration of the L-shaped plate, F friction is the friction force, and θ is the inclination angle of the slide.

9. The energy storage integrated box safety control system based on multiple linkage protection according to claim 6 is characterized in that: The system also includes a fire extinguishing efficiency calculation module, and its calculation formula is: E extinguish =(1-e^(-λ·C gas / C critical ))·(1-e^(-μ·T diffusion ))Among them, E extinguish is the fire extinguishing efficiency, C gas is the actual gas concentration, C critical is the critical extinguishing concentration, λ and μ are fitting parameters; The system also includes a heat sink sealing performance index calculation module, and its calculation formula is: P sealing =(1-Δ gap / W duct )·(1-e^(-ν·v slide )) Among them, P sealing is the closing performance index, Δ gap is the gap width after closure, W duct is the width of the heat dissipation slot, and ν is the speed influence coefficient.

10. A method for applying the energy storage integrated box safety control system based on multiple linkage protection according to any one of claims 6 to 9, characterized in that: The following steps are involved: Monitor the smoke concentration inside the energy storage box and calculate the change, using the formula ΔS(t)=S current (t)-S baseline Determine whether it exceeds the preset threshold S threshold ; When the change exceeds the threshold, the motor torque T is calculated. motor =(F load ·p) / (2π·η mechanical ) and start the motor to drive the slider to move and cut off the power to the energy storage module; Control the L-shaped plate to slide and close the heat dissipation slot, and its sliding speed is determined by the formula v slide =√(2·F spring ·d spring / m plate ) calculation, where F spring is the spring restoring force; Inert gas is released to suppress the fire source, and the gas flow rate is calculated by the formula Q gas =A nozzle ·C d ·√(2·ΔP / ρ gas ) control and calculate the gas diffusion time T diffusion =V box / (Q gas ·n nozzle ·η diffusion ); The system maintains an emergency state and continuously monitors internal temperature changes to calculate the fire extinguishing efficiency E extinguish =(1-e^(-λ·C gas / C critical ))·(1-e^(-μ·T diffusion )).

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