A zero-carbon park green electricity direct connection energy storage system

Abstract

This invention relates to the field of energy storage and discloses a zero-carbon green electricity direct-connection energy storage system for industrial parks. The system includes an energy storage cabinet and a controller. The energy storage cabinet contains multiple independent fireproof compartments arranged along its length or width. Each fireproof compartment houses at least one battery cluster, and adjacent fireproof compartments are completely separated by fireproof walls. Each fireproof compartment has a pressure relief valve and an emergency fire extinguisher installed on its upper side wall. The energy storage cabinet also has exhaust ducts, corresponding one-to-one with each fireproof compartment. Active ventilation fans are installed on the side walls of the energy storage cabinet corresponding to the exhaust ducts, and these fans are electrically connected to the controller. Baffles are installed within the exhaust ducts, and a damping shaft is fixed between two opposite side walls of the exhaust duct. One edge of the baffle is fixedly connected to the damping shaft, allowing the baffle to rotate around the damping shaft. The baffle is driven by a shape memory alloy drive assembly. This invention can improve exhaust efficiency based on the degree of temperature increase.

Description

Technical Field

[0001] This invention relates to the field of energy storage, specifically to a zero-carbon industrial park green electricity direct-connection energy storage system. Background Technology

[0002] With the increasing urgency of addressing climate change globally, zero-carbon industrial parks have become a crucial direction for the transformation and upgrading of industrial parks. A core aspect of zero-carbon industrial parks lies in increasing the local consumption rate of renewable energy. Among these, the green electricity direct-connection model has garnered widespread attention due to its ability to reduce dependence on the main power grid, lower transmission and distribution losses, and reduce transaction costs. Green electricity direct-connection energy storage systems are typically housed in prefabricated modules or containers, integrating battery clusters, converters, thermal management systems, and energy management units. These systems are used to mitigate the intermittency and volatility of wind and solar power generation, enabling peak shaving and valley filling for the park's electricity consumption, as well as providing emergency backup power.

[0003] However, existing prefabricated energy storage devices suitable for conventional grid-connected scenarios have revealed some shortcomings when directly applied to green electricity direct connection in zero-carbon parks.

[0004] First, because energy storage devices in the green electricity direct connection mode need to frequently perform high-rate charging and discharging on an hourly or even minute-by-minute basis, the battery aging speed is accelerated, and the risk of thermal runaway is significantly higher than that of general energy storage devices.

[0005] Secondly, to reduce line losses and increase the self-consumption rate of green electricity, energy storage devices often need to be located close to production workshops, warehouses, or areas where people are active. The single-space structure of conventional energy storage containers cannot effectively prevent the spread of fire and explosion. Once a battery cluster experiences thermal runaway, high-temperature smoke, open flames, and explosive shock waves can spread to the entire cabin within seconds, causing all battery clusters to burn in a chain reaction and seriously threatening the safety of surrounding personnel and facilities.

[0006] Furthermore, under the green electricity direct connection mode, the combustible gas inside the energy storage device is accelerated to be released due to frequent charging and discharging. The existing passive ventilation structure has a slow response and low ventilation efficiency, which can easily lead to local explosive gas accumulation. Summary of the Invention

[0007] The purpose of this invention is to provide a zero-carbon green electricity direct-connection energy storage system for industrial parks, thereby solving at least one of the above-mentioned technical problems.

[0008] The objective of this invention can be achieved through the following technical solutions: A zero-carbon green electricity direct-connection energy storage system for industrial parks includes an energy storage cabinet and a controller. The energy storage cabinet is equipped with multiple independent fireproof compartments arranged along its length or width. Each fireproof compartment contains at least one battery cluster. Adjacent fireproof compartments are completely separated by fireproof walls. Each fire compartment is equipped with a pressure relief valve on the upper side wall, and an emergency fire extinguisher is also installed outside each fire compartment. The nozzle of the emergency fire extinguisher is inserted into the fire compartment and aimed at the battery cluster. The control valve of the nozzle is electrically connected to the controller and is used to handle the emergency when the battery cluster in the corresponding fire compartment experiences thermal runaway. The energy storage cabinet is also equipped with a smoke exhaust duct, which is set up one by one with each fire compartment. An active ventilation fan is installed on the side wall corresponding to the energy storage cabinet and the flue. The active ventilation fan is electrically connected to the controller. A baffle is installed in the flue. The damping shaft is fixed between the two opposite side walls of the flue. One edge of the baffle is fixedly connected to the damping shaft, so that the baffle can rotate around the damping shaft. The baffle is driven by a shape memory alloy drive component.

[0009] Furthermore, the shape memory alloy drive assembly includes: A shape memory alloy spring sheet is installed inside a fireproof compartment near the top. The shape memory alloy spring sheet has a first end and a second end. A fixed base is fixedly installed on the inner top wall of the fireproof compartment, and the first end of the shape memory alloy spring sheet is fixedly connected to the fixed base. The push rod has one end connected to the second end of the memory alloy spring plate, and the other end of the push rod passes through the side wall of the flue and extends into the flue, where it is connected to the free end of the baffle plate. When the temperature inside the fireproof compartment rises, the shape memory alloy spring extends along its length, pushing the push rod, which in turn drives the baffle to rotate around the damping axis to increase the exhaust opening; when the temperature drops, the shape memory alloy spring contracts, causing the baffle to decrease the exhaust opening.

[0010] Furthermore, a warning component is installed on the front of the energy storage cabinet. The warning component works in conjunction with the shape memory alloy drive component to warn of fireproof compartments that have a risk of thermal runaway. Multiple warning components are installed, and each fireproof compartment is corresponding to one of them.

[0011] Furthermore, the warning component includes a connecting rope, one end of which is connected to the free end of the baffle, and the other end is connected to the baffle plate, for pulling the baffle plate to move laterally; the baffle plate is slidably disposed in a limiting groove provided laterally, the limiting groove being opened on the side wall of the front of the energy storage cabinet, a sensor group is disposed in the fireproof compartment, the sensor group being electrically connected to the controller; a warning plate is disposed in the limiting groove; by moving the baffle plate left and right, the warning plate can be displayed and hidden.

[0012] Furthermore, an electric telescopic rod is provided at the bottom of the limiting groove. The electric telescopic rod is electrically connected to the controller. The bottom of the electric telescopic rod is fixedly installed on the bottom wall of the limiting groove. A pusher is fixedly connected to the telescopic end of the electric telescopic rod. One end of the warning plate is hinged to the limiting groove. A vertical groove is provided on the side of the limiting groove, and a sliding shaft is slidably connected in the vertical groove. One end of the sliding shaft is in contact with the pushing component, and the other end is located in the fireproof compartment and is connected to the emergency component on the opposite side through a connecting rod.

[0013] Furthermore, the emergency component includes a clip that is slidably installed in a vertical slide groove, which is opened on the inner wall of the fireproof compartment. The middle part of the fireproof compartment is set as a louver structure, and the free ends of multiple louvers of the louver are movably connected to the same frame. The frame and the clip are connected by a movable arm. When the sensor group detects that the temperature exceeds the set threshold, the controller controls the electric telescopic rod to extend, the pusher moves upward and pushes the slide shaft to move upward along the vertical groove. The slide shaft drives the frame to move through the connecting rod, which in turn drives the louver blades to swing to open the louver.

[0014] Furthermore, the top of the pusher is set at an acute angle to insert into the gap between the free end of the warning plate and the side of the limiting groove, so as to lift the free end of the warning plate when the electric telescopic rod extends.

[0015] Furthermore, the controller is preset with a first temperature threshold and a first duration; The electric telescopic rod is only controlled to extend when the temperature detected by the sensor group exceeds the first temperature threshold and after a first duration has elapsed from the moment the temperature exceeds the first temperature threshold. The first duration is greater than or equal to the time required for the shape memory alloy spring sheet to stretch from its initial state to its limit position due to heating.

[0016] The beneficial effects of this invention are: (1) The smoke exhaust baffle is directly driven to rotate by the thermal expansion of the shape memory alloy spring sheet, and the movement of the baffle is synchronously transmitted to the baffle of the warning component by the connecting rope, realizing the integrated linkage of smoke exhaust function and warning function. The displacement of a single shape memory alloy element is used to adjust the exhaust opening to guide the high temperature smoke, and to mechanically pull the baffle to expose the warning plate. Without additional sensors or power sources, it can issue an intuitive thermal runaway warning to the maintenance personnel outside the cabinet. This pure mechanical linkage not only eliminates the safety hazards of the electric control warning system when the power is cut off or the sensor fails, but also greatly simplifies the structure and reduces manufacturing and maintenance costs, so that the energy storage cabinet can simultaneously complete the two key actions of expanding the smoke exhaust channel and locating the fault compartment in the early stage of thermal runaway, improving the timeliness and accuracy of emergency response. (2) The controller drives the electric telescopic rod to open the louvers to perform pressure relief and explosion-proof guidance only after the dual conditions of continuous temperature exceeding the limit and the shape memory alloy being fully extended to the limit position for a preset time are met. This realizes the time-series coordination and linkage of electric pressure relief, mechanical smoke exhaust and warning. The louvers are only opened after actual continuous thermal runaway and the shape memory alloy has fully responded, avoiding the false opening of the pressure relief channel caused by instantaneous temperature fluctuations or sensor false alarms. This preserves the dustproof and moisture-proof capabilities of the louvers when they are normally closed. At the same time, the directional opening of the louvers provides a second pressure relief path for the high-temperature and high-pressure gas in the compartment, in addition to the smoke exhaust duct. This forms a coordinated action with the smoke exhaust baffle driven by the shape memory alloy, effectively reducing the risk of explosion. The entire linkage mechanism organically combines the immediate reliability of the mechanical system with the condition verification of the electric control system, and simultaneously realizes the triple protection of early warning, smoke exhaust and pressure relief in a single thermal runaway event. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the arrangement of the battery clusters of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram showing the location of the active ventilation fan and warning components; Figure 4 This is a schematic diagram of the warning component. Figure 5 This is a schematic diagram showing the positions of the vertical slot and sliding shaft in the warning assembly; Figure 6 This is a schematic diagram of the shape memory alloy drive component.

[0019] Attached Figure Descriptions: 1. Energy Storage Cabinet; 2. Battery Cluster; 3. Fireproof Partition Wall; 4. Smoke Exhaust Duct; 5. Active Ventilation Fan; 6. Baffle Plate; 7. Damping Rotary Shaft; 8. Memory Alloy Drive Component; 81. Memory Alloy Spring Plate; 82. Fixed Base; 83. Push Rod; 9. Warning Component; 91. Connecting Rope; 92. Baffle Plate; 93. Limiting Groove; 94. Warning Board; 95. Electric Telescopic Rod; 96. Push Component; 97. Vertical Groove; 98. Sliding Shaft; 10. Clamping Component; 11. Vertical Slide Groove; 12. Swing Blade; 13. Connecting Frame; 14. Movable Arm. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-6 As shown, the present invention is a zero-carbon green electricity direct-connection energy storage system for industrial parks, including an energy storage cabinet 1 and a controller. The energy storage cabinet 1 is provided with multiple independent fireproof compartments arranged along its length or width. Each fireproof compartment contains at least one battery cluster 2. Adjacent fireproof compartments are completely separated by fireproof partition walls 3. Each fire compartment is equipped with a pressure relief valve on the upper side wall, and an emergency fire extinguisher is also installed outside each fire compartment. The nozzle of the emergency fire extinguisher extends into the fire compartment and is aimed at the battery cluster 2. The control valve of the nozzle is electrically connected to the controller and is used to handle the emergency when the battery cluster 2 in the corresponding fire compartment experiences thermal runaway. The energy storage cabinet 1 is also equipped with a smoke exhaust duct 4, which is set up one by one with each fire compartment. An active ventilation fan 5 is installed on the side wall of the energy storage cabinet 1 and the flue 4, and the active ventilation fan 5 is electrically connected to the controller; a baffle 6 is installed in the flue 4, and a damping shaft 7 is fixed between the two opposite side walls of the flue 4. One edge of the baffle 6 is fixedly connected to the damping shaft 7, so that the baffle 6 can rotate around the damping shaft 7. The baffle 6 is driven by the shape memory alloy drive component 8.

[0022] The shape memory alloy drive assembly 8 includes: A shape memory alloy spring sheet 81 is disposed inside the fireproof compartment near the top, and the shape memory alloy spring sheet 81 has a first end and a second end; The fixed base 82 is fixedly installed on the inner top wall of the fireproof compartment, and the first end of the shape memory alloy spring sheet 81 is fixedly connected to the fixed base 82. Push rod 83, one end of push rod 83 is connected to the second end of the memory alloy spring plate 81, and the other end of push rod 83 passes through the side wall of the flue 4 and extends into the interior of the flue 4, and is connected to the free end of the baffle plate 6. When the temperature inside the fireproof compartment rises, the shape memory alloy spring plate 81 extends along its length, pushing the push rod 83, which in turn drives the baffle 6 to rotate around the damping shaft 7 to increase the exhaust opening; when the temperature drops, the shape memory alloy spring plate 81 contracts, causing the baffle 6 to decrease the exhaust opening.

[0023] In this scheme, under normal operating conditions of the energy storage cabinet 1, the temperature of the battery clusters 2 in each fireproof compartment is within the normal range, the shape memory alloy spring sheet 81 is in a contracted state, the push rod 83 connected to it is in a retracted position, the baffle 6 in the exhaust duct 4 is kept at a small opening under the constraint of the damping shaft 7, for example, only 15% ventilation gap is maintained, and the active ventilation fan 5 operates in the low power mode set by the controller to maintain basic air micro-circulation in the compartment. When a battery cluster 2 in a fireproof compartment experiences thermal runaway and the local temperature rises rapidly, the shape memory alloy spring plate 81 near the top of the compartment senses the temperature change. As the temperature exceeds its phase transition threshold, the shape memory alloy spring plate 81 gradually extends, pushing the push rod 83 into the exhaust duct 4. The other end of the push rod 83 drives the free end of the baffle 6 to rotate around the damping shaft 7, causing the opening of the baffle 6 to increase linearly with the temperature increase. When the temperature reaches the peak of thermal runaway, the shape memory alloy spring plate 81 extends to its limit position, and the baffle 6 is pushed to the fully open state. At this time, in conjunction with the high-speed operation of the active ventilation fan 5, high-temperature smoke, electrolyte vapor, etc. are quickly discharged outside the cabinet through the exhaust duct 4. When the thermal runaway is suppressed and the temperature drops, the shape memory alloy spring plate 81 contracts, the opening of the baffle 6 automatically decreases, and normal ventilation is restored.

[0024] This technical solution is based on the thermally induced phase transformation characteristics of shape memory alloys. The shape memory alloy spring plate 81 can be made of nickel-titanium-based shape memory alloy. In the low-temperature martensitic phase, its length is relatively short. When the temperature rises to the austenitic phase transformation initiation temperature, for example, 55–60°C, the alloy crystal structure transforms from martensite to austenite, accompanied by macroscopic elongation. The higher the temperature, the greater the austenite volume fraction and the greater the elongation, until the phase transformation is complete and the maximum elongation is reached. This displacement change is directly converted into the rotational motion of the baffle plate 6 via the push rod 83. Due to the constant frictional torque provided by the damping shaft 7, the baffle plate 6 will not vibrate due to airflow disturbances and can smoothly and linearly adjust the exhaust cross-section with temperature. The entire adjustment process relies entirely on thermal and mechanical conversion to achieve adaptive exhaust speed regulation. Simultaneously, the active ventilation fan 5 is electrically connected to the controller, which can increase the speed in the event of thermal runaway. Together with the shape memory alloy-driven baffle plate 6, it forms a dual-mode exhaust system with mechanical adjustment of the cross-sectional area and electric adjustment of the wind speed. The two systems do not interfere with each other and are functionally complementary.

[0025] Existing smoke exhaust systems for energy storage devices face a dilemma. If normally open smoke exhaust outlets are used, although no electrical control is required, the large cross-section ventilation over the years will cause a large amount of external dust, salt spray, and moisture to enter the energy storage cabinet 1 and adhere to the high-voltage battery cluster 2, BMS wiring harness, and connectors, causing insulation degradation, creep corrosion, and increased contact resistance. At the same time, the active ventilation fan 5 needs to operate at high power continuously to maintain the smoke exhaust capacity, significantly increasing the auxiliary energy consumption of the park. If purely electrically controlled smoke exhaust is used, although the dampers can be closed under normal conditions to save energy and prevent dust, it relies entirely on sensor power supply, controller logic, and electric actuators. Once thermal runaway occurs, causing a partial power outage or sensor signal drift or failure, the smoke exhaust channel may not be able to open in time, resulting in the inability to exhaust high-temperature flue gas and exacerbating the spread of thermal runaway.

[0026] This solution utilizes shape memory alloy to drive the baffle 6, achieving adaptive exhaust under all operating conditions. During normal operation, the baffle 6 automatically maintains a slight opening, which meets the daily micro-negative pressure ventilation requirements while reducing the amount of dust entering the compartment. Simultaneously, the active ventilation fan 5 can operate at a reduced frequency, and the localized negative pressure created by the small opening prevents external moisture from backflowing, effectively protecting electrical insulation. When the temperature begins to rise abnormally but has not yet reached thermal runaway, the opening of the baffle 6 slowly and linearly increases with the temperature, increasing exhaust capacity in advance and delaying thermal runaway. This process requires no controller intervention, and even if the power supply to the energy storage cabinet 1 is interrupted, the baffle 6 can still automatically adjust according to the heat. When the temperature reaches the thermal runaway threshold, the baffle 6 is pushed to full opening, and the exhaust cross-section reaches its theoretical maximum value. This, combined with the full-speed operation of the active ventilation fan 5, forms a dual smoke exhaust capability, ensuring that high-temperature flue gas, electrolyte vapor, and combustible gases are exhausted from the cabinet within seconds, preventing pressure buildup and explosion. After thermal runaway ends, baffle 6 automatically reduces its opening as the temperature drops, eliminating the need for manual reset and preventing the potential hazard of maintenance personnel forgetting to close the damper and leaving it wide open for extended periods. These features enable the device to achieve near-sealed cabinet dust and moisture protection and low energy consumption in the absence of a fire, while maintaining near-open smoke extraction efficiency in the event of a fire. This balances dust prevention, energy saving, and reliable smoke extraction, making it particularly suitable for zero-carbon energy storage scenarios in industrial parks.

[0027] The front of the energy storage cabinet 1 is equipped with a warning component 9, which works in conjunction with the shape memory alloy drive component 8 to warn of fireproof compartments that have a risk of thermal runaway. Multiple warning components 9 are provided, and each fireproof compartment is provided in a one-to-one correspondence.

[0028] Furthermore, the warning component 9 includes a connecting rope 91, one end of which is connected to the free end of the baffle 6, and the other end is connected to the baffle 92, for pulling the baffle 92 to move laterally; the baffle 92 is slidably disposed in a limiting groove 93 provided laterally, the limiting groove 93 is opened on the side wall of the front of the energy storage cabinet 1, a sensor group is provided in the fireproof compartment, and the sensor group is electrically connected to the controller; a warning plate 94 is provided in the limiting groove 93; by moving the baffle 92 left and right, the warning plate 94 can be displayed and hidden.

[0029] Furthermore, an electric telescopic rod 95 is provided at the bottom of the limiting groove 93. The electric telescopic rod 95 is electrically connected to the controller. The bottom of the electric telescopic rod 95 is fixedly installed on the bottom wall of the limiting groove 93. A pusher 96 is fixedly connected to the telescopic end of the electric telescopic rod 95. One end of the warning plate 94 is hinged to the limiting groove 93. A vertical groove 97 is provided on the side of the limiting groove 93. A sliding shaft 98 is slidably connected in the vertical groove 97. One end of the sliding shaft 98 is in contact with the pusher 96, and the other end is located in the fireproof compartment and is connected to the emergency component on the opposite side through a connecting rod.

[0030] Furthermore, the emergency component includes a locking element 10, which is slidably installed in a vertical slide groove 11. The vertical slide groove 11 is located on the inner wall of the fireproof compartment. The middle part of the fireproof compartment is configured as a louver structure. The free ends of multiple swing blades 12 of the louver are movably connected to the same connecting frame 13. The connecting frame 13 and the locking element 10 are connected by a movable arm 14. The structure of the movable arm 14 is configured according to actual needs, as long as it can push the connecting frame 13 upward without interfering with the movement trajectory of the connecting frame 13 along the hinge point of the swing blades 12.

[0031] When the sensor group detects that the temperature exceeds the set threshold, the controller controls the electric telescopic rod 95 to extend, the pusher 96 moves upward and pushes the slide shaft 98 to move upward along the vertical groove 97. The slide shaft 98 drives the connecting frame 13 to move through the connecting rod, thereby driving the louver 12 of the louver to swing to open the louver.

[0032] The top of the pusher 96 is set at an acute angle to insert into the gap between the free end of the warning plate 94 and the side of the limiting groove 93, so as to lift the free end of the warning plate 94 when the electric telescopic rod 95 extends.

[0033] The controller is preset with a first temperature threshold and a first duration; The electric telescopic rod 95 is controlled to extend only after the temperature detected by the sensor group exceeds the first temperature threshold and after a first duration has elapsed from the moment the temperature exceeds the first temperature threshold. The first duration is greater than or equal to the time required for the shape memory alloy spring sheet 81 to stretch from its initial state to its limit position due to heating.

[0034] In this scheme, when the battery cluster 2 in a fireproof compartment experiences thermal runaway, the shape memory alloy spring plate 81 near the top of the compartment senses the temperature increase and gradually elongates, pushing the push rod 83 to make the baffle 6 in the exhaust duct 4 rotate around the damping shaft 7 to increase the exhaust opening. At the same time, the free end of the baffle 6 is pulled by the connecting rope 91 to move the baffle 92, which is slidably set in the front limiting groove 93 of the energy storage cabinet 1, laterally, revealing the warning plate 94 that was originally covered, thereby issuing a mechanical warning to the operation and maintenance personnel that there is a risk of thermal runaway in the compartment. Meanwhile, the sensor group installed in the fireproof compartment detects the temperature in real time and transmits the signal to the controller. The controller has a first temperature threshold and a first time threshold preset inside. The first time threshold is greater than or equal to the time required for the shape memory alloy spring plate 81 to extend from the initial state to the limit position. The controller continuously judges: if the temperature detected by the sensor group exceeds the first temperature threshold, and the temperature is still higher than the threshold after the first time threshold is continuously passed from the time the threshold is exceeded, that is, the two conditions of temperature exceeding the limit and shape memory alloy spring plate 81 extending to the limit position and maintaining it for a sufficient time are met at the same time, then the controller judges that thermal runaway has indeed occurred and the shape memory alloy has fully acted, and then controls the electric telescopic rod 95 at the bottom of the limit groove 93 to extend. The electric telescopic rod 95 drives the pusher 96 at its top to move upward. On one hand, the acute-angled tip of the pusher 96 inserts into the gap between the free end of the warning plate 94 and the side of the limiting groove 93, lifting one end of the warning plate 94 and causing it to deflect around the hinge axis, forming a three-dimensional structure of a spatial triangle, further enhancing the visibility of the warning. On the other hand, when the pusher 96 moves upward, it pushes the sliding shaft 98 in the vertical groove 97 to move upward. The sliding shaft 98 drives the locking piece 10 on the inner side wall of the fireproof compartment to slide along the vertical sliding groove 11 through the connecting rod. The locking piece 10 then drives the connecting frame 13 of the louver through the movable arm 14. The connecting frame 13 drives multiple swing blades 12 to swing synchronously, thereby opening the louver. Since the louver is set on the side wall of the fireproof compartment and its opening direction faces the inside of the energy storage cabinet 1, the opened louver provides a directional emission path for the high-temperature and high-pressure gas in the compartment, realizing the functions of pressure relief and explosion-proof guidance. Throughout the process, the shape memory alloy-driven baffle 92 warning and the electric telescopic small-drive louver operate independently but in a coordinated sequence: the former is a purely mechanical response with no delay, while the latter requires dual condition verification by the controller before execution. This effectively prevents the louvers from opening erroneously due to instantaneous temperature fluctuations, ensuring that the pressure relief and explosion-proof guide is activated only after actual continuous thermal runaway and the shape memory alloy has fully activated, thus improving the system's safety redundancy and intelligent judgment capabilities.

[0035] This technical solution, on the one hand, uses the shape memory alloy spring sheet 81 to directly drive the baffle 6 to rotate by thermal expansion, and the connecting rope 91 synchronously drives the baffle 92 to move laterally, realizing instantaneous linkage between thermal runaway temperature rise and mechanical warning. Without any electrical signal, the baffle 92 can automatically expose the warning plate 94 as the smoke exhaust opening increases, enabling maintenance personnel to accurately identify the abnormal fire compartment from outside the cabinet at the first time. This solves the problem of traditional electric control warning relying on sensors and power supply and failing when power is off. At the same time, the warning action and the exhaust action share the same thermal driving force, and the structure is simple and reliable. On the other hand, after the controller confirms the dual conditions of continuous temperature exceeding the limit and the shape memory alloy fully elongating to its limit position for a preset time, it then drives the electric telescopic rod 95 to open the louvers to perform pressure relief and explosion-proof guidance. This achieves a coordinated linkage between electronically controlled pressure relief and mechanical smoke exhaust or warning. It ensures that the louvers only open when there is actual and continuous thermal runaway and the shape memory alloy has fully responded, avoiding the loss of dust and moisture protection capabilities due to accidental opening of the pressure relief channel caused by instantaneous temperature fluctuations or occasional false alarms from sensors. It also makes the opening direction of the louvers complementary to the airflow path of the smoke exhaust duct 4, allowing high-temperature and high-pressure gas to be discharged upward through the smoke exhaust duct 4 and to be directionally depressurized laterally through the louvers, reducing the risk of explosion within the compartment. The above-mentioned dual linkage mechanism organically combines the instantaneous response of pure mechanical systems with the condition verification of electronic control. While maintaining low power consumption and high reliability, it achieves full-chain coordination from temperature sensing, increased smoke exhaust, mechanical warning, condition confirmation, and pressure relief guidance, comprehensively improving the safety defense capability of zero-carbon park energy storage devices under thermal runaway conditions.

[0036] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A zero-carbon park green electricity direct connection energy storage system, comprising an energy storage cabinet and a controller, characterized in that, The energy storage cabinet is equipped with multiple independent fireproof compartments arranged along its length or width. Each fireproof compartment contains at least one battery cluster, and adjacent fireproof compartments are completely separated by fireproof walls. Each fire compartment is equipped with a pressure relief valve on the upper side wall, and an emergency fire extinguisher is also installed outside each fire compartment. The nozzle of the emergency fire extinguisher is inserted into the fire compartment and aimed at the battery cluster. The control valve of the nozzle is electrically connected to the controller and is used to handle the emergency when the battery cluster in the corresponding fire compartment experiences thermal runaway. The energy storage cabinet is also equipped with a smoke exhaust duct, which is set up one by one with each fire compartment. An active ventilation fan is installed on the side wall corresponding to the energy storage cabinet and the flue. The active ventilation fan is electrically connected to the controller. A baffle is installed in the flue. The damping shaft is fixed between the two opposite side walls of the flue. One edge of the baffle is fixedly connected to the damping shaft, so that the baffle can rotate around the damping shaft. The baffle is driven by a shape memory alloy drive component.

2. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 1, characterized in that, The shape memory alloy drive assembly includes: A shape memory alloy spring sheet is installed inside a fireproof compartment near the top. The shape memory alloy spring sheet has a first end and a second end. A fixed base is fixedly installed on the inner top wall of the fireproof compartment, and the first end of the shape memory alloy spring sheet is fixedly connected to the fixed base. The push rod has one end connected to the second end of the memory alloy spring plate, and the other end of the push rod passes through the side wall of the flue and extends into the flue, where it is connected to the free end of the baffle plate. When the temperature inside the fireproof compartment rises, the shape memory alloy spring extends along its length, pushing the push rod, which in turn drives the baffle to rotate around the damping axis to increase the exhaust opening; when the temperature drops, the shape memory alloy spring contracts, causing the baffle to decrease the exhaust opening.

3. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 2, characterized in that, The front of the energy storage cabinet is equipped with warning components, which work in conjunction with shape memory alloy drive components to warn of fire-resistant compartments that are at risk of thermal runaway. Multiple warning components are provided, and each fire-resistant compartment is corresponding to one of them.

4. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 3, characterized in that, The warning assembly includes a connecting rope, one end of which is connected to the free end of the baffle plate, and the other end is connected to the baffle plate for traction of the baffle plate's lateral displacement. The baffle plate is slidably installed in a laterally provided limiting groove, which is located on the side wall of the front of the energy storage cabinet. A sensor group is installed in the fireproof compartment, and the sensor group is electrically connected to the controller. A warning plate is installed in the limiting groove. The warning plate can be displayed or hidden by moving the baffle plate left and right.

5. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 4, characterized in that, An electric telescopic rod is installed at the bottom of the limiting groove. The electric telescopic rod is electrically connected to the controller. The bottom of the electric telescopic rod is fixedly installed on the bottom wall of the limiting groove. A pusher is fixedly connected to the telescopic end of the electric telescopic rod. One end of the warning plate is hinged to the limiting groove. A vertical groove is provided on the side of the limiting groove, and a sliding shaft is slidably connected in the vertical groove. One end of the sliding shaft is in contact with the pushing component, and the other end is located in the fireproof compartment and is connected to the emergency component on the opposite side through a connecting rod.

6. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 5, characterized in that, The emergency component includes a clip that slides in a vertical groove. The vertical groove is located on the inner wall of the fireproof compartment. The middle part of the fireproof compartment is set as a louver structure. The free ends of the multiple louvers of the louver are movably connected to the same frame. The frame and the clip are connected by a movable arm. When the sensor group detects that the temperature exceeds the set threshold, the controller controls the electric telescopic rod to extend, the pusher moves upward and pushes the slide shaft to move upward along the vertical groove. The slide shaft drives the frame to move through the connecting rod, which in turn drives the louver blades to swing to open the louver.

7. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 5, characterized in that, The top of the pusher is set at an acute angle to insert into the gap between the free end of the warning plate and the side of the limiting groove, so as to lift the free end of the warning plate when the electric telescopic rod extends.

8. The zero-carbon industrial park green electricity direct-connection energy storage system according to claim 7, characterized in that, The controller is preset with a first temperature threshold and a first duration; The electric telescopic rod is only controlled to extend when the temperature detected by the sensor group exceeds the first temperature threshold and after a first duration has elapsed from the moment the temperature exceeds the first temperature threshold. The first duration is greater than or equal to the time required for the shape memory alloy spring sheet to stretch from its initial state to its limit position due to heating.

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