Intelligent explosion-proof clean shed system for battery production

Abstract

This invention discloses an intelligent explosion-proof cleanroom system for battery production, comprising a chamber and an explosion-proof purification mechanism. The purified air output from the explosion-proof purification mechanism can be directed into the chamber, thereby creating a relatively independent and continuously controlled local clean space. The interior of the chamber is divided into an explosion-proof chamber and a filter chamber. A fan is arranged inside the explosion-proof chamber. After air enters from outside the chamber, it is sequentially conveyed by the fan, guided by the air outlet, and filtered before entering the clean chamber. The overall air supply path is clear, airflow is smoother, and the air supply stability within the chamber is higher. The partitioned arrangement of the explosion-proof chamber and the filter chamber integrates the power supply and filtration components into corresponding functional spaces. Combined with the connection between the high-efficiency filter and the ventilation holes, a purification path integrating air intake, air supply, filtration, and air delivery is formed. This helps maintain the uniformity and continuity of the air entering the clean chamber, enhancing the overall operational reliability of the cleanroom system in battery production scenarios.

Description

Technical Field

[0001] This invention relates to the field of cleanroom technology, and more specifically, to an intelligent explosion-proof cleanroom system for battery production. Background Technology

[0002] In the battery manufacturing industry, especially in the processes of lithium battery cell manufacturing, electrolyte filling, formation, and capacity testing, clean environment control has become a core requirement for ensuring product quality and production safety due to the involvement of volatile organic solvents (such as NMP, EC, DMC, etc.) and combustible dust. Battery production processes are highly dependent on air cleanliness, particulate matter control, and environmental stability. Clean booths, as important equipment for constructing localized clean environments, are widely used for workstation isolation on production lines, clean air supply, and protection of process areas. On the other hand, in some production scenarios involving volatile media, dust, or flammable and explosive atmospheres, clean booths not only need to have air purification functions but also need to meet explosion-proof safety requirements to prevent ventilation and purification equipment from becoming a potential hazard source during operation.

[0003] Current cleanroom technologies typically employ air supply and filtration units mounted on the canopy. A fan draws in outside air, filters it efficiently, and then delivers it into the canopy to maintain a localized clean environment. For scenarios with explosion-proof requirements, explosion-proof fans are generally used, or protective structures are added to the exterior of the air supply unit to enhance safety. However, when the air supply power components are continuously running, significant airflow disturbances, pressure fluctuations, and mechanical operational effects can easily occur in their operating area. If there is a risk of electrical spark propagation, pressure fluctuations, or uncontrolled airflow disturbances within the fan's operating area, it can further affect the stability of the air supply between the downstream filtration area and the cleanroom. This not only increases safety hazards in the cleanroom air supply path but may also adversely affect the airflow organization and the maintenance of a clean environment within the canopy.

[0004] Therefore, there is a need to provide an intelligent explosion-proof cleanroom system for battery production to solve the problem of insufficient air supply stability in existing cleanrooms. Summary of the Invention

[0005] The main objective of this invention is to provide an intelligent explosion-proof cleanroom system for battery production, aiming to solve the technical problems mentioned in the background section.

[0006] The present invention adopts the following technical solution:

[0007] A smart explosion-proof cleanroom system for battery production includes:

[0008] The shed body contains a clean chamber, and the shed body has ventilation holes that connect to the clean chamber.

[0009] An explosion-proof purification mechanism includes a housing, a fan, and a high-efficiency filter. The housing is divided into an explosion-proof chamber and a filtration chamber. The fan is located inside the explosion-proof chamber, with its air inlet exposed outside the housing. The air outlet of the fan is connected to the filtration chamber through an air outlet in the wall of the explosion-proof chamber. The high-efficiency filter is located inside the filtration chamber and is used to filter the air entering the cleanroom. The wall of the filtration chamber is connected to the ventilation hole through the high-efficiency filter.

[0010] Furthermore, the shed includes several supports distributed horizontally and vertically, with enclosure panels connecting the supports, and a roof provided on the upper surface of the supports. The roof, supports, and enclosure panels together form the clean chamber.

[0011] The housing has ventilation holes on the ceiling. A fixing frame is installed inside the housing. The fixing frame is fixedly connected to the housing and the fan. The fixing frame and the housing together form the explosion-proof cavity. The high-efficiency filter is located below the fixing frame.

[0012] Furthermore, a spark detector and an electrostatic sensor are installed inside the explosion-proof cavity, and several air outlets are opened on opposite sides of the fixing frame. A spark suppression component is installed on the side of the air outlet facing away from the explosion-proof cavity.

[0013] The spark suppression assembly includes a buffer cylinder coaxial with the air outlet. A water mist nozzle is provided on the inner circumference of the buffer cylinder. The water mist nozzle is electrically connected to the spark detector and the electrostatic sensor. When the spark detector detects a spark or the electrostatic sensor detects that the electrostatic charge exceeds a preset threshold, the water mist nozzle is activated.

[0014] Furthermore, the buffer cylinder tapers in a conical shape towards the side away from the explosion-proof chamber, and the ratio of the inlet cross-sectional area to the outlet cross-sectional area of ​​the buffer cylinder is 1.5~2.5:1. The water mist nozzles are distributed between the middle of the buffer cylinder and the outlet of the buffer cylinder.

[0015] Furthermore, the water mist nozzles include a plurality of nozzles, which are arranged in a ring array on the inner circumference of the buffer cylinder. Along the axis of the buffer cylinder, the spray direction of the water mist nozzles is at an angle toward the inlet end of the buffer cylinder.

[0016] Furthermore, the top wall of the housing is provided with an exhaust port, and two symmetrically arranged exhaust ports are distributed on opposite sides of the fan;

[0017] An emergency ventilation assembly is provided inside the explosion-proof cavity. The emergency ventilation assembly includes an exhaust motor and an annular valve plate rotatably connected to the top wall of the housing. The annular valve plate blocks the exhaust port and has an exhaust notch adapted to the exhaust port. The annular valve plate is rotatably connected to the drive end of the exhaust motor.

[0018] Furthermore, an arc-shaped rack is fixedly connected to the bottom end of the annular valve plate. The rack is coaxially arranged with the annular valve plate, and a drive gear is connected to the output shaft of the exhaust motor. The drive gear meshes with the rack.

[0019] The cleanroom is equipped with a dust concentration sensor and a VOC gas detector. The dust concentration sensor and the VOC gas detector are electrically connected to the exhaust fan motor. When the dust concentration sensor detects that the dust concentration exceeds the safety threshold or the VOC gas detector detects that the volatile organic compound concentration exceeds the safety threshold, the exhaust fan motor rotates at a preset angle to align the exhaust notch with the exhaust port.

[0020] Furthermore, the top wall of the housing is provided with an air inlet, the fan is distributed in the air inlet, and a protective net is fixedly connected to the upper end face of the housing, the protective net covering the top of the fan;

[0021] The inner circumference of the annular valve plate is bent to form a rotating connection part, which is engaged with the air inlet and rotatably connected to the air inlet.

[0022] Furthermore, the shed also includes a door frame, which is located on one side of the enclosure. A protective door is rotatably connected inside the door frame. A sealing strip is provided on the outer periphery of the protective door, and an observation window is embedded in the protective door.

[0023] Furthermore, the upper end face of the ceiling is provided with a hexagonal connection hole, and a gasket is provided on the upper end face of the ceiling corresponding to the connection hole, and the gasket is provided with an oblong hole communicating with the connection hole;

[0024] The upper surface of the canopy is provided with a protective plate, which is distributed along the extension direction of the enclosure. The protective plate is fixedly connected to the canopy by bolts, which penetrate the protective plate and the washer in sequence and are threaded into the connection hole.

[0025] In this invention, a clean chamber is formed by enclosing a canopy, with ventilation holes on the canopy communicating with the clean chamber. Purified air output from the explosion-proof purification mechanism can be directed into the canopy, thus creating a relatively independent and continuously controlled local clean space. The interior of the shell is divided into an explosion-proof chamber and a filter chamber. A fan is arranged in the explosion-proof chamber, and a high-efficiency filter is arranged in the filter chamber. After air enters from outside the shell, it is sequentially conveyed by the fan, guided by the air outlet, and filtered before entering the clean chamber. The overall air supply path is clear, the airflow is smoother, and the air supply stability within the canopy is higher. Furthermore, the partitioned arrangement of the explosion-proof chamber and the filter chamber integrates the power supply and filtration components into their respective functional spaces. Combined with the communication between the high-efficiency filter and the ventilation holes, a purification pathway integrating air intake, air supply, filtration, and air delivery is formed. This helps maintain the uniformity and continuity of the air entering the clean chamber, improves the environmental control effect within the clean chamber, and enhances the overall operational reliability of the cleanroom system in battery production scenarios. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an intelligent explosion-proof cleanroom system for battery production according to the present invention;

[0027] Figure 2 This is a schematic diagram of the explosion-proof purification mechanism of the present invention;

[0028] Figure 3 This is a cross-sectional structural diagram of the explosion-proof purification mechanism of the present invention;

[0029] Figure 4 This is an exploded structural diagram of the explosion-proof purification mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the emergency ventilation assembly of the present invention;

[0031] Figure 6 yes Figure 1 Enlarged structural diagram at point A;

[0032] in:

[0033] 1. Shelter body; 11. Support frame; 12. Enclosure panel; 13. Roof; 131. Ventilation hole; 132. Connection hole; 14. Clean chamber; 2. Explosion-proof purification mechanism; 21. Shell; 211. Exhaust port; 212. Air inlet; 22. Fan; 23. Fixing frame; 231. Air outlet; 24. Explosion-proof chamber; 25. High-efficiency filter; 26. Filter chamber; 27. Protective net; 3. Spark suppression assembly; 31. Buffer cylinder; 32. Water mist nozzle; 4. Emergency exhaust assembly; 41. Exhaust motor; 42. Annular valve plate; 421. Exhaust notch; 422. Rotary connection; 43. Rack; 44. Drive gear; 5. Door frame; 6. Protective door; 7. Observation window; 8. Gasket; 81. Waist-shaped hole; 9. Protective plate.

[0034] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] Reference Figures 1 to 6 This invention proposes an intelligent explosion-proof cleanroom system for battery production, comprising:

[0040] The shed body 1 has a clean chamber 14 inside it, and the shed body 1 has a ventilation hole 131 that connects to the clean chamber 14.

[0041] The explosion-proof purification mechanism 2 includes a housing 21, a fan 22, and a high-efficiency filter 25. The housing 21 is divided into an explosion-proof chamber 24 and a filter chamber 26. The fan 22 is disposed in the explosion-proof chamber 24, and the air inlet of the fan 22 is exposed outside the housing 21. The air outlet of the fan 22 is connected to the filter chamber 26 through the air outlet of the wall of the explosion-proof chamber 24. The high-efficiency filter 25 is disposed in the filter chamber 26 and is used to filter the air entering the clean chamber 14. The wall of the filter chamber 26 is connected to the ventilation hole 131 through the high-efficiency filter 25.

[0042] Furthermore, the shed 1 includes several supports 11 arranged horizontally and vertically, with surrounding panels 12 connected between the supports 11, and a canopy 13 provided on the upper surface of the supports 11. The canopy 13, the supports 11 and the surrounding panels 12 together form the clean chamber 14.

[0043] The housing 21 is provided on the roof 13 with ventilation holes 131. A fixing frame 23 is provided inside the housing 21. The fixing frame 23 is fixedly connected to the housing 21 and the fan 22. The fixing frame 23 and the housing 21 together form the explosion-proof cavity 24. The high-efficiency filter 25 is provided below the fixing frame 23.

[0044] In the above embodiments, by cooperating with the shed 1 and the explosion-proof purification mechanism 2, the organic unity of maintaining cleanliness and explosion-proof safety is achieved in local areas of lithium battery cell manufacturing, liquid injection, formation, capacity testing and other processes.

[0045] The shed 1 is framed by several horizontally and vertically arranged supports 11. The supports 11 are laterally enclosed by partition panels 12. A roof 13 is fixedly installed on the upper surface of the supports 11. Together, these three elements enclose a clean chamber 14 with a clearly defined boundary. At least one ventilation hole 131 is evenly provided on the roof 13, allowing clean air to enter the chamber from top to bottom, forming the required positive pressure airflow organization. This effectively inhibits the intrusion of external particulate matter, controls the diffusion of fine dust generated during the process, and maintains a stable temperature and humidity field and electrostatic suppression level. The overall design is modular, allowing for rapid adjustment of size and layout according to specific workstations on the production line, thus exhibiting high adaptability.

[0046] The explosion-proof purification mechanism 2 is located on the upper surface of the ceiling 13, corresponding to each ventilation hole 131. It includes a relatively enclosed shell 21, inside which a fan 22 and a mounting bracket 23 are integrated. The fan 22 partially penetrates the upper surface of the shell 21, with its air inlet facing the external environment. The motor and electrical components that may generate sparks or high temperatures are located inside the shell 21. The mounting bracket 23 is firmly connected to the inner wall of the shell 21 and the outer shell of the fan 22. The mounting bracket 23 and the shell 21 together form an explosion-proof cavity 24, and the fan 22 is located inside the explosion-proof cavity 24. A high-efficiency filter 25 is installed on the inner peripheral wall at the lower end of the shell 21. The filter and the interior of the shell 21 form a filter cavity 26, which is unobstructed and connected to the explosion-proof cavity 24 above. The airflow path of the cleanroom system is as follows: external air - pressurized by the fan 22 and enters the explosion-proof cavity 24 - flows downward into the filter cavity 26 - passes through the high-efficiency filter 25 to remove particulate matter and some harmful gases - and is delivered to the cleanroom 14 through the ventilation holes 131 of the ceiling 13.

[0047] The fan 22 and the high-efficiency filter 25 are housed in the same casing 21 with a compact, straight-through layout, eliminating the need for external series air valves, bypass pipes, or multi-path switching mechanisms for the FFU. This ensures a continuous air path and low flow resistance. When the concentration of VOCs (such as NMP, EC, DMC) or combustible dust in the production environment rises abnormally, the fan 22 can be shut down automatically or controlled by frequency converter to quickly block the input of hazardous substances into the clean chamber 14. This avoids problems such as switching delays, sudden changes in airflow causing drastic fluctuations in instantaneous air volume, local eddies, and temporary instability of pressure differentials. As a result, the positive pressure in the chamber remains stable for a short period of time, and the particle concentration does not rebound, thus improving the overall safety level and operational stability of the local high-cleanliness area in battery production.

[0048] In one embodiment, a spark detector and an electrostatic sensor are provided inside the explosion-proof cavity 24, and a plurality of air outlets 231 are provided on opposite sides of the fixing frame 23. A spark suppression component 3 is provided on the side of the air outlets 231 facing away from the explosion-proof cavity 24.

[0049] The spark suppression component 3 includes a buffer cylinder 31, which is coaxial with the air outlet 231. A water mist nozzle 32 is provided on the inner circumference of the buffer cylinder 31. The water mist nozzle 32 is electrically connected to the spark detector and the electrostatic sensor. When the spark detector detects a spark or the electrostatic sensor detects that the electrostatic charge exceeds a preset threshold, the water mist nozzle 32 is activated.

[0050] In the above embodiment, a spark detector and an electrostatic sensor are installed inside the explosion-proof cavity 24. The spark detector is a photoelectric or ultraviolet sensor, arranged in the connection area in front of the inlet of the spark suppression component 3, to capture the light signal generated by transient sparks or arcs. The electrostatic sensor is a non-contact electric field probe, installed on the inner wall of the explosion-proof cavity 24 or near the fixing frame 23, to continuously monitor the accumulation level of electrostatic charge in the cavity. Several air outlets 231 are opened on the opposite side walls of the fixing frame 23. The air outlets 231 are evenly distributed, preferably two symmetrically distributed on each side.

[0051] Spark suppression components 3, including buffer cylinders 31, are fixedly installed on the outer side of each air outlet 231 (the side facing away from the explosion-proof cavity 24). The buffer cylinders 31 are coaxially arranged with the air outlets 231, and airflow is discharged from the air outlets 231 into the filter cavity 26. Water mist nozzles 32 are installed on the inner circumferential side wall of the buffer cylinder 31. The water mist nozzles 32 are connected to an external water source and a solenoid valve through a waterproof sealing joint. Their control signal lines pass through the explosion-proof cavity 24 and are connected to the spark detector and the electrostatic sensor to form an interlocking circuit. When the spark detector detects a spark characteristic signal or the electrostatic sensor detects that the charge exceeds a preset threshold, the control unit drives the solenoid valve to open, and the water mist nozzles 32 spray high-pressure fine mist into the buffer cylinder 31. The water mist forms a high-density atomization zone inside the buffer cylinder 31. The airflow containing potential ignition sources that escapes from the air outlet 231 passes through this atomization zone. The water mist particles absorb the heat of the spark through heat exchange, quenching it. At the same time, the conductive path of the water film quickly conducts static charge to the ground, achieving the dual suppression function of spark extinguishing and static electricity neutralization.

[0052] In one example, the buffer cylinder 31 tapers in a tapered shape away from the explosion-proof chamber 24, and the ratio of the inlet cross-sectional area to the outlet cross-sectional area of ​​the buffer cylinder 31 is 1.5 to 2.5:1. The water mist nozzles 32 are distributed between the middle of the buffer cylinder 31 and the outlet of the buffer cylinder 31.

[0053] In the above embodiment, the buffer cylinder 31 has a tapered, tapered structure on the side away from the explosion-proof cavity 24. That is, the diameter gradually decreases from the inlet end connected to the air outlet 231 towards the outer outlet end, forming a contracting flow channel with a decreasing cross-sectional area. The ratio of the inlet cross-sectional area to the outlet cross-sectional area is controlled within the range of 1.5 to 2.5:1. The tapered structure causes an acceleration effect on the airflow within the buffer cylinder 31, increasing the probability of collision and residence time between the airflow and the water mist. The water mist nozzles 32 are arranged between the middle region and the outlet end of the buffer cylinder 31, that is, distributed in the middle and rear sections of the buffer cylinder 31, segmented along the axial direction, so that the spray covers the main flow field area of ​​the buffer cylinder 31 forward. After the airflow carrying potential sparks or electrostatic particles enters the buffer cylinder 31 from the inlet, its velocity increases due to the cross-sectional contraction. The droplets sprayed from the water mist nozzles 32 are further broken up and uniformly dispersed in the high-speed airflow, forming a dense liquid-gas two-phase mixing zone. As the spark passes through the mixing zone, its energy is quickly absorbed and extinguished by the droplets; the static charge is effectively discharged through continuous water film bridging, while maintaining low overall flow resistance, ensuring smooth airflow under normal operating conditions of the fan 22.

[0054] In one example, the water mist nozzles 32 include a plurality of nozzles arranged in a ring array on the inner circumference of the buffer cylinder 31, and the spray direction of the water mist nozzles 32 is at an angle to the inlet end of the buffer cylinder 31 along the axis of the buffer cylinder 31.

[0055] In the above embodiment, multiple water mist nozzles 32 are arranged in a ring array on the inner circumferential side of the buffer cylinder 31. Along the axial direction of the buffer cylinder 31, the installation positions of the water mist nozzles 32 are mainly concentrated in the middle to outlet section. The spray direction of the water mist nozzles 32 is not axially parallel, but inclined at a certain angle towards the inlet end of the buffer cylinder 31, that is, the spray axis forms an acute angle with the axis of the buffer cylinder 31, pointing in the direction of the incoming flow. This inclined spray arrangement allows the water mist to be sprayed in a way that faces the airflow, forming a reverse or oblique mist curtain, significantly increasing the collision cross-section between the droplets and particles in the airflow. After the airflow from the air outlet 231 enters the buffer cylinder 31, it collides with the inclined water mist sprayed from the central annular array. The water mist is deflected towards the inlet side by the impact of the incoming flow, forming a multi-layered, interlaced atomization barrier inside the buffer cylinder 31. The airflow continues forward, passing through the annular array near the outlet, further enhancing the suppression effect. This allows the water mist to form a three-dimensional, continuous liquid phase barrier zone inside the buffer cylinder 31. Sparks or charged particles are repeatedly acted upon in the multiple fog curtains, greatly increasing the probability of extinguishing and releasing them. At the same time, it avoids the local fog flow dead zone that may be caused by spraying in one direction, ensuring that the suppression component fully covers the abnormal airflow.

[0056] In one example, the top wall of the housing 21 is provided with an exhaust port 211, and two symmetrically arranged exhaust ports are distributed on opposite sides of the fan 22;

[0057] An emergency ventilation assembly 4 is provided inside the explosion-proof cavity 24. The emergency ventilation assembly 4 includes an exhaust motor 41 and an annular valve plate 42 rotatably connected to the top wall of the housing 21. The annular valve plate 42 blocks the exhaust port 211, and the annular valve plate 42 has an exhaust notch 421 adapted to the exhaust port 211. The annular valve plate 42 is rotatably connected to the drive end of the exhaust motor 41.

[0058] In the above embodiment, the top wall of the housing 21 has an exhaust port 211, and two exhaust ports are symmetrically distributed on opposite sides of the fan 22, forming an exhaust path. An emergency exhaust assembly 4 is installed inside the explosion-proof cavity 24, mainly composed of an exhaust motor 41 and an annular valve plate 42. The annular valve plate 42 is circular in shape and rotatably connected to the top wall of the housing 21 and the drive end of the exhaust motor 41. Its plate body blocks the exhaust port 211 on the top wall, with an exhaust notch 421 matching the shape of the exhaust port 211 only at a specific location. When the system is in normal operation, the annular valve plate 42 remains in a blocking posture, and the exhaust notch 421 is misaligned with the exhaust port 211, thereby sealing the emergency exhaust channel and ensuring that the explosion-proof cavity 24 is isolated from the external environment. The exhaust motor 41 adopts an explosion-proof design and is installed inside the explosion-proof cavity 24, with its drive end connected to the annular valve plate 42. When emergency ventilation needs to be activated, the exhaust motor 41 receives a control signal and rotates at a specific angle, aligning the exhaust notch 421 on the annular valve plate 42 with the exhaust port 211 on the top wall. At this time, the gas in the explosion-proof chamber 24 can be quickly discharged through this aligned channel, realizing emergency pressure relief or forced ventilation. The high-efficiency filter 25 has a large air resistance, so after the exhaust port 211 is opened, the airflow will hardly pass through the high-efficiency filter 25, forcibly changing the airflow path, thereby exhausting the air generated by the fan 22 and the hazardous gases or dust in the clean chamber 14 to the outside. The opening and closing is achieved by rotating the annular valve plate 42, with rapid response, suitable for emergency handling scenarios of sudden gas accumulation or abnormal pressure in battery production.

[0059] In one example, an arc-shaped rack 43 is fixedly connected to the bottom end of the annular valve plate 42. The rack 43 is coaxially arranged with the annular valve plate 42. The output shaft of the exhaust motor 41 is connected to a drive gear 44, which meshes with the rack 43.

[0060] The clean chamber 14 is equipped with a dust concentration sensor and a VOC gas detector. The dust concentration sensor and the VOC gas detector are electrically connected to the exhaust fan motor 41. When the dust concentration sensor detects that the dust concentration exceeds the safety threshold or the VOC gas detector detects that the volatile organic compound concentration exceeds the safety threshold, the exhaust fan motor 41 rotates at a preset angle to align the exhaust notch 421 with the exhaust port 211.

[0061] In the above embodiment, an arc-shaped rack 43 is fixedly connected to the bottom end of the annular valve plate 42. The rack 43 is coaxially arranged with the annular valve plate 42, forming a meshing trajectory of a complete circle or near-circumference. The output shaft of the exhaust motor 41 is connected to a drive gear 44, which meshes with the arc-shaped rack 43 to reliably transmit the motor's rotational motion to the circumferential rotation of the valve plate. A dust concentration sensor and a VOC gas detector are arranged in the clean chamber 14. Both monitor the concentration of suspended particles and volatile organic compounds in the air in real time, respectively, and are electrically connected to the exhaust motor 41 to form a closed-loop control. When the dust concentration exceeds a preset safety threshold or the VOC concentration exceeds the standard, the sensor outputs an abnormal signal to the control unit, and the control unit drives the exhaust motor 41 to rotate by a preset angle (specifically, the minimum angle required to completely align the notch). The motor drives the drive gear 44 to rotate, and the gear pushes the rack 43 to make the annular valve plate 42 rotate synchronously until the exhaust port 421 is completely aligned with the exhaust port 211 on the top wall, opening the emergency exhaust channel and realizing automatic and rapid response to abnormal environmental conditions in the clean chamber, ensuring that harmful substances will not remain for a long time, while maintaining the structural seal of the explosion-proof chamber 24.

[0062] In one embodiment, the top wall of the housing 21 is further provided with an air inlet 212, the fan 22 is distributed in the air inlet 212, and a protective net 27 is fixedly connected to the upper end face of the housing 21, the protective net 27 covering the fan 22.

[0063] The inner circumferential side of the annular valve plate 42 is bent to form a rotating connection part 422, which is engaged with the air inlet 212 and rotatably connected to the air inlet 212.

[0064] In the above embodiment, the top wall of the housing 21 is specifically provided with an air inlet 212 in addition to the exhaust port 211. The fan 22 is installed at the air inlet 212 and is responsible for delivering filtered clean air into the clean chamber. A protective net 27 is fixedly connected to the upper surface of the housing 21. The protective net 27 completely covers the fan 22 to prevent foreign objects from falling into the fan blades or the air inlet channel.

[0065] The inner circumference of the annular valve plate 42 is bent inward to form a rotating connection part 422. The rotating connection part 422 has an annular flange structure, which is engaged with the inner wall of the air inlet 212 and forms a rotating fit with it. This allows the valve plate to rotate stably around the center of the air inlet 212 while maintaining a tight fit with the top wall of the housing 21. During normal operation, the valve plate mainly blocks the exhaust port 211, while the air inlet 212 remains open and the fan 22 continues to run. In an emergency, the rotation of the valve plate only affects the opening and closing of the exhaust port 211 and does not interfere with the air intake path. By integrating the air intake and emergency exhaust functions into the same area of ​​the top wall, and achieving a reliable rotating fit between the valve plate and the air inlet 212 through the rotating connection part 422, the airflow organization is ensured to be reasonable, while maintaining the compactness and explosion-proof integrity of the overall structure.

[0066] In one embodiment, the shed body 1 further includes a door frame 5, which is opened on one side of the enclosure panel 12. A protective door 6 is rotatably connected inside the door frame 5. A sealing strip is provided on the outer periphery of the protective door 6, and an observation window 7 is embedded in the protective door 6.

[0067] In the above embodiment, the shed body 1 includes a door frame 5 disposed on one side of the enclosure panel 12, and a protective door 6 is rotatably connected to the door frame 5 via hinges. A continuous sealing strip is embedded on the outer periphery of the protective door 6. When the door is closed, the strip is tightly pressed against the inner side of the door frame 5, forming a continuous sealing surface, effectively blocking the exchange of air and dust penetration. A transparent observation window 7 is embedded in the center of the protective door 6. The observation window 7 is made of explosion-proof transparent material and is fixed around its perimeter by sealing strips, ensuring both overall airtightness and structural strength. Operators can monitor the operating status of equipment, production process, and environmental parameters inside the cleanroom in real time through the observation window 7 without frequently opening the door, reducing the risk of contamination and pressure fluctuations caused by door opening.

[0068] In one embodiment, the upper end face of the canopy 13 is provided with a hexagonal connection hole 132, and a gasket 8 is provided on the upper end face of the canopy 13 corresponding to the connection hole 132. The gasket 8 is provided with an oblong hole 81 that communicates with the connection hole 132.

[0069] A protective plate 9 is provided on the upper surface of the canopy 13. The protective plate 9 is distributed along the extension direction of the surrounding plate 12. The protective plate 9 is fixedly connected to the canopy 13 by bolts. The bolts pass through the protective plate 9 and the gasket 8 in sequence and are threaded into the connection hole 132.

[0070] In the above embodiment, a regular hexagonal connecting hole 132 is provided on the upper surface of the canopy 13. A gasket 8 is correspondingly provided around the connecting hole 132, and an oblong hole 81 communicating with the connecting hole 132 is provided on the gasket 8 to accommodate bolts and provide a certain installation adjustment margin. Multiple protective plates 9 are arranged on the upper surface of the canopy 13 along the extension direction of the surrounding plate 12, i.e., in the vertical direction. Each protective plate 9 is fixed to the canopy 13 by multiple sets of bolts. The bolts pass through the protective plates 9 and the gaskets 8 in sequence, and are threadedly connected to the regular hexagonal connecting hole 132 on the canopy 13 to achieve fixation. The regular hexagonal connecting hole 132 effectively prevents the bolts from rotating and loosening, while the oblong hole 81 allows for fine-tuning in a certain direction, ensuring uniform force distribution at each connection point during assembly. The protective plates 9 cover the area above the canopy 13 that is susceptible to external impacts or falling objects, forming a second layer of physical protection. By combining shape matching with multi-point bolt fixing, the overall impact resistance and durability of the canopy 13 are improved without increasing weight.

[0071] In one embodiment, the bottom of the support 11 is provided with an anti-static floor, which includes a plurality of spliced ​​conductive modules, and adjacent conductive modules are connected by metal clips.

[0072] In the above embodiment, an anti-static floor is laid at the bottom of the support frame 11. The floor is composed of multiple conductive modules. Adjacent conductive modules are connected by metal clips, which serve both mechanical fixing and electrical connection functions, ensuring that all modules form a continuous conductive network. Each conductive module has conductive properties on its surface, which can conduct static charges generated by operators and equipment to the ground, avoiding the risk of spark discharge caused by the accumulation of static electricity in the cleanroom. The modular splicing method facilitates local replacement and maintenance. When a certain area of ​​the floor is damaged, only the corresponding module needs to be removed for repair without affecting the overall use. The anti-static floor is fixed to the bottom of the support frame 11, together forming the load-bearing and electrostatic protection system at the bottom of the cleanroom, effectively ensuring the safety of electrostatic-sensitive parts during lithium battery production.

[0073] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An intelligent explosion-proof cleanroom system for battery production, characterized in that, include: The shed (1) has a clean chamber (14) inside it, and the shed (1) has a ventilation hole (131) that connects to the clean chamber (14). The explosion-proof purification mechanism (2) includes a housing (21), a fan (22), and a high-efficiency filter (25). The housing (21) is divided into an explosion-proof chamber (24) and a filter chamber (26). The fan (22) is located in the explosion-proof chamber (24), and the air inlet of the fan (22) is exposed outside the housing (21). The air outlet of the fan (22) is connected to the filter chamber (26) through the air outlet of the wall of the explosion-proof chamber (24). The high-efficiency filter (25) is located in the filter chamber (26) and is used to filter the air entering the clean chamber (14). The wall of the filter chamber (26) is connected to the ventilation hole (131) through the high-efficiency filter (25). The shed (1) includes several supports (11) arranged in a horizontal and vertical direction. The supports (11) are connected by a partition (12), and the upper surface of the supports (11) is provided with a canopy (13). The canopy (13), the supports (11) and the partition (12) together form the clean chamber (14). The housing (21) is provided with ventilation holes (131) on the roof (13). A fixing frame (23) is provided inside the housing (21). The fixing frame (23) is fixedly connected to the housing (21) and the fan (22). The fixing frame (23) and the housing (21) together form the explosion-proof cavity (24). The high-efficiency filter (25) is provided below the fixing frame (23). The explosion-proof cavity (24) is equipped with a spark detector and an electrostatic sensor. Several air outlets (231) are opened on the opposite sides of the fixing frame (23). A spark suppression component (3) is provided on the side of the air outlet (231) facing away from the explosion-proof cavity (24). The spark suppression component (3) includes a buffer cylinder (31), which is coaxial with the air outlet (231). A water mist nozzle (32) is provided on the inner circumference of the buffer cylinder (31). The water mist nozzle (32) is electrically connected to the spark detector and the electrostatic sensor. When the spark detector detects a spark or the electrostatic sensor detects that the electrostatic charge exceeds a preset threshold, the water mist nozzle (32) is activated. The buffer cylinder (31) tapers in a cone shape away from the explosion-proof cavity (24), and the ratio of the inlet cross-sectional area to the outlet cross-sectional area of ​​the buffer cylinder (31) is 1.5~2.5:

1. The water mist nozzles (32) are distributed between the middle of the buffer cylinder (31) and the outlet of the buffer cylinder (31).

2. The intelligent explosion-proof cleanroom system for battery production according to claim 1, characterized in that, The water mist nozzles (32) include a plurality of nozzles, which are arranged in a ring array on the inner circumference of the buffer cylinder (31). Along the axis of the buffer cylinder (31), the spray direction of the water mist nozzles (32) is at an angle toward the inlet end of the buffer cylinder (31).

3. The intelligent explosion-proof cleanroom system for battery production according to claim 1, characterized in that, The top wall of the housing (21) is provided with an exhaust port (211), and two symmetrically arranged exhaust ports (211) are distributed on opposite sides of the fan (22); An emergency ventilation assembly (4) is provided inside the explosion-proof cavity (24). The emergency ventilation assembly (4) includes an exhaust motor (41) and an annular valve plate (42) rotatably connected to the top wall of the housing (21). The annular valve plate (42) blocks the exhaust port (211), and the annular valve plate (42) has an exhaust notch (421) adapted to the exhaust port (211). The annular valve plate (42) is rotatably connected to the drive end of the exhaust motor (41).

4. The intelligent explosion-proof cleanroom system for battery production according to claim 3, characterized in that, The bottom end of the annular valve plate (42) is fixedly connected to an arc-shaped rack (43), the rack (43) is coaxially arranged with the annular valve plate (42), and the output shaft of the exhaust motor (41) is connected to a drive gear (44), the drive gear (44) meshes with the rack (43); The clean chamber (14) is equipped with a dust concentration sensor and a VOC gas detector. The dust concentration sensor and the VOC gas detector are electrically connected to the exhaust motor (41). When the dust concentration sensor detects that the dust concentration exceeds the safety threshold or the VOC gas detector detects that the volatile organic compound concentration exceeds the safety threshold, the exhaust motor (41) rotates at a preset angle to align the exhaust notch (421) with the exhaust port (211).

5. The intelligent explosion-proof cleanroom system for battery production according to claim 3, characterized in that, The top wall of the housing (21) is also provided with an air inlet (212), and the fan (22) is distributed in the air inlet (212). A protective net (27) is fixedly connected to the upper end face of the housing (21), and the protective net (27) covers the fan (22). The inner circumferential side of the annular valve plate (42) is bent to form a rotating connection part (422), which is engaged with the air inlet (212) and rotatably connected to the air inlet (212).

6. The intelligent explosion-proof cleanroom system for battery production according to claim 1, characterized in that, The shed (1) also includes a door frame (5), which is located on one side of the enclosure (12). A protective door (6) is rotatably connected inside the door frame (5). A sealing strip is provided on the outer periphery of the protective door (6), and an observation window (7) is embedded in the protective door (6).

7. The intelligent explosion-proof cleanroom system for battery production according to claim 1, characterized in that, The upper end face of the ceiling (13) is provided with a hexagonal connection hole (132), and a gasket (8) is provided on the upper end face of the ceiling (13) corresponding to the connection hole (132). The gasket (8) is provided with an oblong hole (81) that connects to the connection hole (132). The upper surface of the canopy (13) is provided with a protective plate (9). The protective plate (9) is distributed along the extension direction of the surrounding plate (12). The protective plate (9) is fixedly connected to the canopy (13) by bolts. The bolts pass through the protective plate (9) and the gasket (8) in sequence and are threaded into the connection hole (132).

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