Box shell automatic sealing cover and closing method and application thereof

Abstract

The invention relates to an automatic box shell sealing cover and a closing method and application thereof, which are used for closing a plurality of ventilation holes of a ventilation part of a box shell, and are characterized in that the automatic box shell sealing cover comprises a sealing cover which is connected with the ventilation part and is provided with a plurality of openings corresponding to the ventilation holes; a rigid rod of the self-driving device is connected with the sealing cover and used for driving the sealing cover to slide relative to the ventilation part, so that the multiple openings are staggered with the ventilation holes to close the ventilation part, and the self-driving device enables the rigid rod to move linearly in an electric driving or spring driving mode.

Description

Technical Field

[0001] This invention relates to the field of automatic ventilation and shut-off technology in confined spaces, specifically to automatic sealing of enclosures and their closing methods, and the application of automatic sealing of enclosures in battery module boxes and electrical control cabinets. Background Technology

[0002] Large-scale energy storage has long been a challenge for industry, while battery energy storage for small-capacity applications has been widely used. For a century, lead-acid batteries have been extensively used in industrial and commercial sectors, particularly as uninterruptible power supplies (UPS) and starting power sources. In the last two decades, with the rapid development of lithium battery technology, lead-acid batteries have been largely replaced by lithium-ion batteries. However, the inherent lithium dendrite effect in lithium-ion batteries leads to significant safety risks during long-term use. When lithium-ion batteries are used on a large scale, the unavoidable thermal runaway and probabilistic thermal propagation have become pressing technical challenges that need to be addressed.

[0003] High-energy-density lithium-ion battery cells, also known as battery packs, are formed by connecting multiple cells in series and / or parallel. The battery pack is placed inside a battery box, forming a modular battery module along with the BMS circuit board (Battery Management System component), fluid guides, separators, locking straps, cable harnesses, and sensors. The battery box, also called the battery module box, is constructed from molded plate ribs and can be either sealed or non-sealed. Sealed structures are completely enclosed with excellent sealing performance, while non-sealed structures cannot be sealed and lack sealing properties. In grid-side energy storage, multiple battery module boxes are connected in series and parallel to form battery clusters, or electric vehicle battery packs contain multiple battery modules. Battery module boxes and battery packs used in this purpose are mostly sealed structures with an IP67 protection rating. However, more common applications involve non-sealed battery module boxes, where multiple battery modules are connected in series and parallel, installed on the rack of a cabinet, on a battery cluster, in a battery box, or in a battery cabinet to form a battery system. In applications such as commercial and industrial energy storage, UPS lithium battery systems, and residential energy storage, battery systems do not employ liquid cooling heat exchange or sealed module boxes due to environmental and economic considerations. Instead, they use air cooling heat exchange, i.e., natural ventilation or forced ventilation by fans, to achieve heat dissipation. Obviously, the battery module boxes cannot be sealed or airtight. When the battery modules are charging and discharging, heat is generated due to Joule heating. At this time, through forced ventilation or natural convection, external cold air enters the modules through the ventilation parts of each module box to achieve convective heat exchange between the cells; or the airflow passes through the ventilation parts of the battery system's cabinet or casing, exchanging heat with the atmospheric environment to cool the heated batteries inside the battery module boxes.

[0004] To facilitate ventilation and heat exchange, the battery module housings are designed with non-sealed vents. Furthermore, due to the compact design of the battery modules, which house numerous electrical components within a very small and confined space, the vents in the battery module housings cannot be closed and are extremely difficult to rotate shut.

[0005] Currently, the industry harbors a sense of complacency regarding battery thermal runaway, pinning its hopes on the fire suppression systems in the storage cabinets or enclosures containing large numbers of batteries. However, international research in thermal safety science indicates that fire suppression technology cannot fundamentally solve the problem of lithium battery thermal runaway, namely, the generation of large amounts of gas and heat, significant loss of extinguishing agents, difficulty in precise application, and probabilistic multiple ignitions. Numerous fire suppression experiments have demonstrated that releasing extinguishing agents into battery cabinets and modules can only extinguish initial small fires, failing to prevent subsequent cascaded thermal runaway and large-scale venting. If ignition occurs again, combustion will continue; that is, the flammable and explosive gases generated by battery thermal runaway, and probabilistic ignition sources such as electric arcs, sparks, and auto-ignition points, cannot be fundamentally eliminated by technology.

[0006] When a fire suppression system is configured, although the extinguishing agent is released throughout the battery system or has entered the battery module boxes, and the ventilation of the system enclosure is closed, the extinguishing agent still flows out through the ventilation of each individual battery module box, failing to precisely target any thermally runaway cell or module. Instead, it acts as an average force on all batteries within the enclosure, resulting in minimal efficiency and functionality. In other words, cooling or fire suppression methods cannot effectively and specifically protect any particular battery module box and its internal cells. This leads to successive thermal runaways of the cells within the battery modules due to heat transfer, and the large amount of high-temperature exhaust gas endangers the entire battery box or system, ultimately causing a fire – a common phenomenon in current accidents.

[0007] From a safety protection perspective, early intervention to prevent problems before they arise, controlling and suppressing thermal runaway within battery modules, and avoiding cascading thermal runaway within the module are the correct technical paths for lithium battery thermal safety. Recent thermal safety research shows that when a battery overheats, is about to experience, or has already experienced thermal runaway, rapid cooling and safety intervention to control, suppress, or prevent thermal runaway can effectively prevent and block cascading thermal runaway, thereby avoiding and preventing serious fire accidents. However, the industry has not yet realized that the commonly used air-cooling technology, where the battery module box ventilation openings cannot be closed, has seriously hindered the experimentation and application of various safety technologies.

[0008] Therefore, the key technical challenge in thermal safety protection is that standardized battery modules are non-sealed, unable to independently contain and retain the medium, resulting in the inability to protect the module independently and effectively. Furthermore, due to the extremely small internal space of the battery module box, the displacement of the device for closing the vents should be minimal; parallel movement is technically feasible, but any rotational closure is either impossible or difficult to apply to the module box. In other words, it is necessary to solve how to temporarily close the vents within the confined space of the battery box, minimizing leakage and ensuring that the released medium effectively acts on the cells inside the box.

[0009] Similar technical challenges exist in electrical cabinets, namely, the inability to seal them during short-term cooling in case of internal overheating or during gas extinguishing. The cabinet shells are typically constructed from reinforced sheet metal, with ventilation holes made of perforated thin sheet metal or prefabricated ventilation windows. In current industrial and commercial applications, the temporary closure of ventilation holes is extremely rare due to the difficulty of implementation in compact spaces and economic considerations. Consequently, the industry has abandoned protecting individual electrical cabinets and instead focuses on fire protection for the rooms where they are installed. This necessitates the use of large doses of extinguishing agents and the installation of slow-responding room fire alarm detectors (based on the fire detection response time within a single electrical cabinet).

[0010] The main reason is that normal ventilation closures in industrial and commercial applications, often using louvers or fire dampers with rotary closing mechanisms, require complex pneumatic, hydraulic, chain, or gear drives and rotating mechanisms, making them unsuitable for compact and small spaces. In other words, the sheer number of ventilation closures necessitates complex transmission designs and mechanical systems, resulting in high costs and complex control systems.

[0011] Electrical cabinets, especially low-voltage ones, often experience severe overheating due to Joule heating or electrical faults. Therefore, ventilation and air vents are necessary to facilitate heat exchange between the hot air inside the cabinet and the surrounding air. Fire protection industry-supplied fire extinguishing systems use well-sealed electrical cabinet enclosures during fire testing to ensure that the vaporized mixture of extinguishing agents such as heptafluoropropane, CO2, and perfluorohexanone is difficult to leak, thus guaranteeing successful extinguishing. However, in practical applications, the significant differences in heat dissipation within electrical cabinets lead to large variations in the cross-sectional area (opening) of ventilation openings, resulting in significant differences in the flow rate of hot air. Even with fire extinguishing systems installed in ventilated electrical cabinets, a large amount of the released agent will leak through the ventilation openings during a fire, resulting in insufficient dosage and rendering the fire extinguishing effect ineffective. Summary of the Invention

[0012] This invention addresses the aforementioned problems by providing an automatic sealing cover for the ventilation openings of confined space enclosures, thus solving the problem of closing ventilation openings in battery module boxes and electrical cabinets. Since the underlying technology is the same, the automatic sealing cover is applicable to the common applications described above. This specification uses battery module boxes and enclosures as examples to describe the structure and function.

[0013] This invention provides an automatic sealing cover for closing multiple ventilation holes in the ventilation section of a housing. It comprises: a cover connected to the ventilation section and having multiple openings corresponding to the ventilation holes; and a self-driven mechanism, whose rigid rod is connected to the cover for sliding the cover relative to the ventilation section, causing the multiple openings to be misaligned with the ventilation holes to close the ventilation section. The self-driven mechanism is electrically or spring-driven, causing the rigid rod to move linearly.

[0014] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-drive unit drives the rigid rod to move via electric drive. The self-drive unit is an electric push rod, which includes a reduction gear set, a conversion mechanism, and a DC motor. The rigid rod is the push rod of the electric push rod or the connecting rod of the push rod. The reduction gear set reduces the high speed of the DC motor shaft to a preset output speed. The conversion mechanism converts the rotational motion of the shaft into the linear motion of the push rod or the connecting rod.

[0015] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driven device receives an electrical signal and drives a rigid rod to move in a spring-driven manner. The self-driven device is an electromagnetic starter, and the rigid rod is a push rod. The self-driven device includes: a housing part; a starting element disposed inside the housing part, which changes the magnetic force when energized; a moving element disposed inside the housing part, one end of which is connected to the push rod; and a spring disposed inside the housing part, one end of which is connected to the other end of the moving element, for driving the moving element and the push rod to move under the drive of the starting element.

[0016] The automatic sealing mechanism for the housing provided by this invention may also have the following features: The self-driven device receives an electrical signal and drives a rigid rod to move via a spring drive. The self-driven device is an electromagnetic pin starter, and the rigid rod is a push rod. The self-driven device includes: a housing portion; a moving member disposed inside the housing portion, one end of which is connected to the push rod and has a locking pin groove; an starting member disposed on the upper part of the housing portion, the starting member having a moving iron core corresponding to the position of the locking pin groove, the moving iron core extending into the locking pin groove and capable of moving out of the locking pin groove after being energized; and a spring disposed inside the housing portion, one end of which is connected to the other end of the moving member, and the other end connected to the inner wall of the housing portion, used to drive the moving member and the push rod to move after the moving iron core exits the locking pin groove.

[0017] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driven device senses heat, and the heat causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driven device includes: a thermally sensitive cylinder with a first through hole and multiple drainage holes on the side near the sealing cover; an energy storage spring disposed inside the thermally sensitive cylinder and connected to the thermally sensitive cylinder on one side; a piston connected to the other side of the energy storage spring on one side; and a rigid rod that is a movable push rod with one end connected to the other side of the piston and the other end passing through the first through hole of the thermally sensitive cylinder and connected to the sealing cover.

[0018] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driving device further includes a first thermally sensitive component, which is disposed between the piston and the thermally sensitive cylinder, and has a through hole inside, through which the moving push rod passes.

[0019] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the upper and lower sides of the thermal cylinder are provided with second through holes, the piston is provided with a pin hole, and the self-driving device also includes a second thermal component, which passes through the second through hole and the pin hole.

[0020] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driven device senses heat, and the heat causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driven device includes: a thermosetting breaker, which is made of two metal sheets connected by a heat-sensitive material; a cylinder, which is connected to the thermosetting breaker; an energy storage spring, which is disposed inside the cylinder and connected to the cylinder on one side; and a rigid rod, which is a push rod, connected to the other side of the energy storage spring on one side and connected to the thermosetting breaker on the other side.

[0021] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driving device heats the first thermally sensitive component by receiving an electrical signal. The heat sensed by the first thermally sensitive component causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driving device also includes a first resistance wire, which is disposed inside the first thermally sensitive component and electrically connected to the external circuit.

[0022] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driving device heats the second thermal component by receiving an electrical signal, and the heat sensed by the second thermal component causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driving device also includes a second resistance wire, which is disposed inside the second thermal component and electrically connected to the external circuit.

[0023] The automatic sealing mechanism for the housing provided by this invention may also have the following features: the self-driving device heats the thermoplastic slug by receiving an electrical signal, and the heat sensed by the thermoplastic slug causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driving device also includes an electric heating element, which is disposed at the bottom of the thermoplastic slug and is electrically connected to an external circuit.

[0024] The present invention also provides the application of an automatic casing cover in a battery module box, characterized by having an automatic casing cover for closing multiple ventilation holes in the ventilation section of the battery module box.

[0025] The present invention also provides the application of automatic enclosure sealing in electrical control cabinets, characterized by: having an automatic enclosure sealing, which is used to close multiple ventilation holes in the ventilation section of the electrical control cabinet.

[0026] This invention also provides an automatic lid closing method for a housing. The automatic lid closes multiple ventilation holes in the ventilation section of the housing, and includes the following steps: A self-driven device receives an electrical signal and electrically drives a rigid rod to move linearly, causing the lid to slide relative to the ventilation section, thus misaligning the multiple openings with the ventilation holes to close the ventilation section; or the self-driven device receives an electrical signal and triggers an actuating element, which in turn spring-drives the rigid rod to move linearly, causing the lid to slide relative to the ventilation section, thus misaligning the multiple openings with the ventilation holes to close the ventilation section; or the self-driven device receives an electrical signal and heats it, causing a heat-sensitive component to deform, which in turn triggers a spring and drives the rigid rod to move linearly, causing the lid to slide relative to the ventilation section, thus misaligning the multiple openings with the ventilation holes to close the ventilation section.

[0027] The present invention also provides an automatic sealing and closing method for a housing shell. The automatic sealing and closing method is used to close multiple ventilation holes in the ventilation section of the housing shell. The method is characterized by the following steps: the self-driven device senses heat, causing the heat-sensitive component to deform, which in turn triggers the spring and drives the rigid rod to move linearly, causing the sealing and closing method to slide relative to the ventilation section, so that multiple openings are misaligned with the ventilation holes to close the ventilation section.

[0028] The automatic sealing and closing method for the enclosure provided by the present invention may also have the following features: wherein the electrical signal is a closing command issued by the upper system, a sensor is installed inside the enclosure to monitor the parameter values ​​inside the enclosure and transmit the monitoring results to the upper system in real time, and when the monitoring results are higher than a preset threshold, the upper system issues a closing command, and the parameter values ​​include: temperature, smoke, gas, infrared or ultraviolet.

[0029] The role and effect of invention

[0030] The automatic sealing and closing method of the box shell and its application according to the present invention have the following beneficial effects:

[0031] According to the automatic sealing cover of the casing of the present invention, a self-driving device is connected to the cover and is used to drive the cover to slide relative to the ventilation section, so that each opening is misaligned with the ventilation hole to close the ventilation section. When the cooling medium or other protective agent is released into the battery module box and the ventilation section is closed, the released medium can be most effectively sealed inside the battery module, preventing a large amount of leakage to the outside or being blown to the outside, thus achieving long-term and maximum retention of the medium for cooling or protection. It provides effective protection for the cells in a single battery module, achieving the purposes of overheating cooling, thermal runaway suppression, thermal propagation blocking, and fire extinguishing for numerous cells in a single battery module. Similarly, for cooling the electrical control cabinet when it overheats, and for flame retardant suppression or fire extinguishing in case of thermal runaway, the automatic and rapid closure of the ventilation section can maximize the prevention of leakage and the effectiveness of the cooling and suppression functions of the agent. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the automatic sealing structure of the box shell in Embodiment 1 of the present invention;

[0033] Figure 2 This is a first schematic diagram of the cap being opened in Embodiment 1 of the present invention;

[0034] Figure 3 This is a first schematic diagram of the cap being closed in Embodiment 1 of the present invention;

[0035] Figure 4 This is a second schematic diagram of the cap being opened in Embodiment 1 of the present invention;

[0036] Figure 5 This is a second schematic diagram of the cap being closed in Embodiment 1 of the present invention;

[0037] Figure 6 This is a schematic diagram of the automatic sealing structure of the box shell in Embodiment 2 of the present invention;

[0038] Figure 7 This is a schematic diagram of the self-driving device in Embodiment 2 of the present invention;

[0039] Figure 8 This is a schematic diagram of the self-driving device in Embodiment 3 of the present invention;

[0040] Figure 9 This is a schematic diagram of the self-driving device in Embodiment 4 of the present invention;

[0041] Figure 10 This is a schematic diagram of the self-driving device in Embodiment 5 of the present invention;

[0042] Figure 11 This is a top view of the self-driving device in Embodiment Six of the present invention;

[0043] Figure 12 This is a cross-sectional view of the self-driven device in Embodiment Six of the present invention;

[0044] Figure 13 This is a top view of the self-driven device in the fuse-broken state in Embodiment Six of the present invention;

[0045] Figure 14 This is a cross-sectional view of the self-driven device in the fuse-broken state in Embodiment Six of the present invention;

[0046] Figure 15 This is a schematic diagram of the self-driven device in Embodiment 7 of the present invention;

[0047] Figure 16 This is a schematic diagram of the self-driving device in Embodiment 8 of the present invention;

[0048] Figure 17This is a schematic diagram of the energized state of the self-driven device in Embodiment 8 of the present invention;

[0049] Figure 18 This is a schematic diagram of the self-driving device in Embodiment 9 of the present invention;

[0050] Figure 19 This is a schematic diagram of the energized state of the self-driven device in Embodiment 9 of the present invention;

[0051] Figure 20 This is a ventilation diagram of the cover being installed in the battery module housing in a modified example of the present invention.

[0052] Figure 21 This is a schematic diagram of the closing of the cap after displacement in a variation of the present invention. Detailed Implementation

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the automatic sealing of the box shell and its closing method and application of the present invention.

[0055] Example 1

[0056] Figure 1 This is a schematic diagram of the automatic sealing structure of the box shell in Embodiment 1 of the present invention.

[0057] like Figure 1 As shown, the automatic cover 100 of the enclosure in this embodiment is used to close multiple ventilation holes 1101 (there may be only one ventilation hole 1101, depending on the requirements) of the ventilation section 11 of the enclosure, including: cover 9 and self-driving device 10.

[0058] In this embodiment, the ventilation section 11 is disposed on the housing and consists of a plurality of rectangular ventilation holes 1101 extending along the length direction. The plurality of ventilation holes 1101 are evenly distributed along a first direction. A plurality of guide posts 8 are disposed on the upper and lower sides of the ventilation section 11.

[0059] Multiple guide holes 902 are provided on the upper and lower sides of the cover 9, corresponding one-to-one with the positions of multiple guide posts 8, and the guide posts 8 are slidably fitted into the 902. The extension direction of the guide holes 902 is the first direction. In this embodiment, the guide holes 902 are horizontally arranged, and the cover 9 is connected to the ventilation part 11 through the guide holes 902, and can slide along the first direction.

[0060] The cover 9 has multiple openings 901 corresponding to the ventilation holes 1101. The distribution direction of the multiple openings 901 is a first direction. In this embodiment, the openings 901 are evenly distributed along the horizontal direction.

[0061] A traction column 903 is provided on one side of the cover 9.

[0062] The self-driving device 10 is used to drive the cover 9 to slide relative to the fixed ventilation section 11, so that the multiple openings 901 are all misaligned with the ventilation holes 1101 to close the ventilation section 11.

[0063] The self-driven device 10 includes a rigid rod. The self-driven device is electrically driven to drive the rigid rod to move linearly, causing the rigid rod to drive the cover 9 to slide relative to the ventilation section 11.

[0064] The self-driven actuator 10 is a commercially available electric actuator 1003 driven by a micro-motor, with a rigid rod serving as its push rod 1004, connected to the traction column 903. The electric actuator 1003 includes a reduction gear set R, a conversion mechanism S, and a DC motor M. The reduction gear set R reduces the high-speed rotation of the DC motor M shaft to an appropriate output speed. The conversion mechanism S converts the rotational motion of the shaft into the linear motion of the push rod 1004. The DC motor M can be controlled to rotate forward and reverse, while the push rod 1004 can move forward or backward. The moving speed of the push rod 1004 can be adjusted according to actual needs, but instantaneous movement is not possible.

[0065] Among them, a rigid connecting rod 1005 can be added between the push rod 1004 and the traction column 903 to extend the overall distance and make it easier to arrange the position of the electric push rod 1003.

[0066] This embodiment also provides an automatic sealing and closing method for the casing, which uses the automatic casing cover 100 to close multiple ventilation holes 1101 of the ventilation section 11 of the casing, specifically including the following steps:

[0067] When the electric actuator 1003 receives an electrical signal, it controls the movement of the actuator 1003, causing the actuator 1004 to extend or retract, thus sliding the guide hole 902 relative to the guide post 8. The cover 9 then undergoes a horizontal displacement, causing each opening 901 to be offset from the ventilation hole 1101. At this point, the solid part of the cover 9 covers the ventilation hole 1101, closing all ventilation holes 1101 and shutting down the ventilation section 11. In this embodiment, to ensure complete closure of the ventilation section 11, the travel distance of the cover 9 is preferably set to 3-10 mm.

[0068] Users can accurately control the movement distance of the cover 9 by controlling the movement distance of the push rod 1004. Alternatively, the movement distance of the cover 9 can be accurately controlled by designing the length of the guide hole 902. In this embodiment, initially, the guide post 8 is located at the rightmost side of the guide hole 902. When the opening 901 is misaligned with the ventilation hole 1101, the guide post 8 is located at the leftmost side of the guide hole 902. It should be noted that the electric push rod 1003 can reciprocate, allowing the cover to open and close. Users can easily control the forward and reverse rotation of the micro motor inside the electric push rod 1003 to open or close the ventilation section.

[0069] This embodiment also provides the application of the automatic enclosure cover 100 in battery module boxes and electrical control cabinets. The automatic enclosure cover 100 is used to close multiple ventilation holes in the ventilation section of the box and cabinet.

[0070] Specifically, the automatic sealing of the enclosure 100 is triggered by a closing command from the host system, with the self-driving unit 10 acting as the actuator. Typically, temperature, smoke, infrared, ultraviolet, and gas sensors can be installed inside the enclosure or battery module box. If a set threshold is exceeded, the host system will issue a command requiring cooling or safety protection.

[0071] Figure 2 This is a first schematic diagram of the seal before it is closed in Embodiment 1 of the present invention.

[0072] Figure 3 This is a first schematic diagram after the cap is closed in Embodiment 1 of the present invention.

[0073] like Figure 2-3 As shown in the attached diagram, the working principle of the automatic battery module cover 100 will be further explained below. Figure 2-3 (Guide post 8, guide hole 902, traction post 903, and self-driving device 10 are omitted).

[0074] The width of a single ventilation hole 101 is a, the length is b, and the distance from one outermost ventilation hole 101 to another outermost ventilation hole 101 is c.

[0075] The overall length of the cover 2 is L, and its width is W; the width of a single opening 201 is A, and its length is B. The gap between the opening 201 and both sides of the ventilation hole 101 is d. The general rule is that A≥a, A=a+2d, d≥0, and B≥b. If it is necessary to close the ventilation section 1, the displacement of the cover 2 is a+1.5d, meaning that the width of the cover 2 (a+2d) can completely and evenly cover the width (a) of the ventilation hole 101.

[0076] Specifically, if a is 5mm, d is 1mm, and A is 6mm, then the moving distance is 6.5mm.

[0077] In addition to the ventilation hole 101 described above, the cover 2 of this embodiment can also be used in a ventilation section 3 having a plurality of densely arranged circular holes 301 forming ventilation holes. The following description is in conjunction with the accompanying drawings.

[0078] Figure 4 This is a second schematic diagram before the cap is closed in Embodiment 1 of the present invention.

[0079] Figure 5 This is a second schematic diagram after the cap is closed in Embodiment 1 of the present invention.

[0080] like Figure 4-5 As shown, the casing of this embodiment has multiple circular holes 301. These holes 301 are arranged along a second direction to form a ventilation hole, and the ventilation holes are distributed along a first direction, which is perpendicular to the second direction. The positions of the openings 201 of the cover 2 correspond to the positions of the ventilation holes.

[0081] Specifically, users can choose the required ventilation hole form according to their needs. Common patterns such as square, small rectangle, regular polygon, ellipse, and plum blossom can all be adapted to the cover 2 in this embodiment.

[0082] Functions and effects of Example 1

[0083] According to the automatic sealing cover 100 of the casing involved in this embodiment, the self-driving device 10 is connected to the cover 9 and is used to drive the cover 9 to slide relative to the ventilation part 11, so that each opening 901 is offset from the ventilation hole 1101 to close the ventilation part 11. By releasing the cooling medium, protective medium, etc. into the battery module box and closing the ventilation part 11, the released medium can be most effectively sealed inside the battery module, avoiding a large amount of leakage to the outside or being blown to the outside, achieving the maximum cooling or protection effect. It provides effective protection for each cell in the casing, achieving the purposes of overheating and cooling of the casing, thermal runaway suppression, thermal propagation blocking, and fire extinguishing.

[0084] The cover 9 has multiple openings 901 corresponding to the ventilation holes 1101. The distribution direction of the multiple openings 901 is the same as that of the ventilation holes 1101, so that the openings 901 only need to move the shortest distance to be offset from the ventilation holes 1101 and close the ventilation section 11.

[0085] Multiple guide posts 8 are provided on the upper and lower sides of the ventilation section 11. Multiple guide holes 902 are provided on the upper and lower sides of the cover 9, corresponding one-to-one with the positions of the guide posts 8. The guide holes 902 can slide relative to the guide posts 8, causing the cover 9 to move horizontally as a whole. By adjusting the design length of the guide holes 902, the user can accurately control the distance the cover 9 moves, so that the ventilation hole 1101 is completely covered by the solid part of the cover 9, achieving the effect of closing the ventilation section 11.

[0086] The self-driving unit 10 is an electric push rod 1003, and the rigid rod is its push rod 1004, which is connected to the traction column 903. The user can accurately control the movement distance of the cover 9 by controlling the movement distance of the push rod 1004.

[0087] A rigid connecting rod 1005 can also be added between the push rod 1004 and the traction column 903 to extend the overall distance and make it easier to adjust and arrange the position of the electric push rod 1003.

[0088] In this solution, no manual on-site reset is required. The electric actuator 1003 controls the actuator 1004 to move left and right, and pushes or pulls the cover 9 repeatedly to open or close the ventilation section 11 as needed, making it more flexible to use.

[0089] Example 2

[0090] In Embodiment 2, the same symbols are used for the same structures as in Embodiment 1, and the same descriptions are omitted.

[0091] Figure 6 This is a schematic diagram of the automatic sealing structure of the box shell in Embodiment 2 of the present invention.

[0092] Figure 7 This is a schematic diagram of the self-driving device in Embodiment 2 of the present invention.

[0093] like Figure 6-7 As shown, the self-driving device 10 includes a thermal cylinder 1006, an energy storage spring 1007, a piston 1008, and a first thermal component 1010.

[0094] The thermal cylinder 1006 is composed of a first cylinder part P1 and a second cylinder part P2 connected by threads. A first through hole 1013 is formed on the end wall near the cover 9, and multiple drainage holes 1012 are formed on the bottom side wall. The side of the thermal cylinder 1006 near the cover 9 is the open end, and the side away from the cover 9 is the closed end. The thermal cylinder 1006 is fixed to the battery module housing.

[0095] The energy storage spring 1007 is located at the closed end of the thermal cylinder 1006, and one side of it abuts against the thermal cylinder 1006.

[0096] One side of the piston 1008 abuts against the other side of the energy storage spring 1007.

[0097] The rigid rod is a movable push rod 1009, one end of which is fixedly connected to the other side of the piston 1008, and the other end passes through the first through hole 1013 of the thermosensitive cylinder 1006 and is connected to the traction column 903. A connecting rigid rod 1005 can be added between the movable push rod 1009 and the traction column 903 as needed.

[0098] The first thermistor 1010 is initially in a solid state. Upon heating, it deforms until it melts into a liquid. Heating refers to sensing heat from high-temperature gases or generating heat after electrical current is applied. The thermistor is made of a thermistor material with a low melting point, which deforms and changes from solid to liquid upon heating.

[0099] The first thermal component 1010 is disposed between the piston 1008 and the open end of the thermal cylinder 1006, abutting against the piston 1008 and the thermal cylinder 1006, acting as a limiting block to limit the piston 1008. The piston applies pressure to the energy storage spring 1007, compressing the energy storage spring 1007. A through hole is provided inside the first thermal component 1010, through which the moving push rod 1009 passes. A first resistance wire 1011 is also disposed inside the first thermal component 1010, and the first resistance wire 1011 is electrically connected to an external circuit.

[0100] Specifically, when the ventilation section needs to be actively shut down, the control circuit activates to energize the first resistance wire 1011. The first thermistor 1010 is heated, deforms, and melts into liquid, which is discharged from the thermistor cylinder 1006 through multiple drain holes 1012. The energy storage spring 1007 is triggered and expands, pushing the piston 1008 towards the cover 9, causing the cover 9 to move as a whole, thus closing the ventilation section. Fully automatic shutdown means that the first thermistor 1010 senses the heat of the high-temperature gas, deforms, and melts into liquid, thus automatically triggering shutdown even without energizing.

[0101] In this embodiment, initially, the guide post 8 is located on the far right of the guide hole 902. When the opening 901 is offset from the ventilation hole, the guide post 8 is located on the far left of the guide hole 902.

[0102] Functions and effects of Example 2

[0103] In this embodiment, the first thermal component 1010 functions as a limiting block in the initial state.

[0104] Compared to Embodiment 1, this embodiment requires less energy to move the cover 9. When the first thermistor 1010 contains a first resistance wire 1011, the thermistor 1010 can be melted more quickly because the heating of the first resistance wire 1011 can be controlled, allowing the ventilation section to close more rapidly and making it more flexible to use. It can also be set to automatically shut off upon sensing high temperatures without the need for power. However, the first thermistor 1010 is for single use only and needs to be replaced after it melts.

[0105] Example 3

[0106] This embodiment is a variation of Embodiment 2.

[0107] Figure 8 This is a schematic diagram of the self-driven device in Embodiment 3 of the present invention.

[0108] like Figure 8 As shown, the difference between this embodiment and Embodiment 2 is that it does not have a resistance wire 1011, and there is no need for a control circuit to be turned on. Instead, the high-temperature fumes generated when the battery cell experiences thermal runaway directly melt the thermally sensitive components, thus causing the cover 9 to close automatically. That is, the action of the automatic cover 100 of the casing can also be triggered by the thermally sensitive components inside the self-driving device 10, which has an automatic detection function and does not rely on the upper-level system.

[0109] Multiple vent holes 1025 are provided on the upper side wall of the cylinder block 1006.

[0110] In this embodiment, when the battery module experiences thermal runaway or generates high-temperature fumes due to overheating, the high-temperature fumes enter the interior of the thermistor cylinder 1006 through the drain hole 1012 and the vent hole 1025. The first thermistor component 1010 is heated and turns into liquid, which is then discharged from the thermistor cylinder 1006 through the drain hole 1012. The subsequent steps are the same as when the first resistance wire 1011 is provided, and will not be described again here.

[0111] In this embodiment, since multiple vent holes 1025 are opened on the upper side wall of the thermal cylinder 1006 and multiple drain holes 1012 are opened on the lower side wall, high-temperature flue gas can enter the thermal cylinder 1006 more quickly to heat the first thermal component 1010 so that the ventilation section can be closed in time.

[0112] Functions and effects of Example 3

[0113] Compared to Embodiment 2, this embodiment also has the following advantages: When the first resistance wire 1011 is not installed inside the first thermistor 1010, by adding a vent 1025, high-temperature flue gas can enter the thermistor cylinder 1006 more quickly, causing the first thermistor 1010 to be heated and triggering the spring to close the ventilation section. This method does not consume electrical energy, making it more energy-efficient and simpler, and is a purely mechanical structure. However, the closing of the cover 9 is slower and more passive than when heated by electricity.

[0114] Example 4

[0115] In Example 4, the same symbols are used for the same structures as in Example 2, and the same descriptions are omitted.

[0116] Figure 9 This is a schematic diagram of the self-driving device in Embodiment 4 of the present invention.

[0117] like Figure 9 As shown, the self-driven device 10 includes a thermal cylinder 1006, an energy storage spring 1007, a piston 1015, and a second thermal component 1016. The rigid rod is a movable push rod 1009.

[0118] The thermal cylinder 1006 has a second through hole 1014 on its upper and lower sides, and the piston 1015 has a pin hole inside.

[0119] The second thermal component 1016 is initially in a solid state, but deforms and melts into a liquid when heated.

[0120] The second thermal component 1016 passes through the second through hole 1014 and the pin hole, acting as a locking pin to limit the piston 1015. The piston 1015 applies pressure to the energy storage spring 1007, compressing the energy storage spring 1007. A second resistance wire 1024 is provided inside the second thermal component, and the second resistance wire 1024 is electrically connected to an external circuit.

[0121] Specifically, when the ventilation section needs to be actively shut off, the control circuit is activated, energizing the second resistance wire 1024. The second thermistor 1016 is heated and melts into liquid, which is discharged from the thermistor cylinder 1006 through multiple drain holes 1012 and the second through hole 1014. The triggered energy storage spring 1007 expands, pushing the piston 1015 towards the cover 9, causing the cover 9 to move as a whole, thus closing the ventilation section. Fully automatic shutdown means that the second thermistor 1016 senses the heat of the high-temperature gas and is subsequently melted into liquid, triggering the energy storage spring 1007, thus automatically shutting off even without energizing.

[0122] Functions and effects of Example 4

[0123] In this embodiment, the second thermal component 1016 functions as a locking pin in the initial state, reducing the amount of thermal material used and relying on the material's shear strength and the pin's limiting effect. The rest is the same as in Embodiment 2.

[0124] Example 5

[0125] This embodiment is a variation of Embodiment 4.

[0126] The difference between this embodiment and embodiment four is that it does not have a resistance wire 1024. Multiple vent holes 1025 are provided on the upper side wall of the cylinder body 1006.

[0127] Figure 10 This is a schematic diagram of the self-driving device in Embodiment 5 of the present invention.

[0128] like Figure 10 As shown, when the battery module experiences thermal runaway or generates high-temperature fumes due to overheating, the fumes enter the interior of the thermistor cylinder 1006 through the drain hole 1012 and the vent hole 1025. The second thermistor component 1016 is heated and liquefied, then discharged from the thermistor cylinder 1006 through the drain hole 1012 and the second through hole 1014. Subsequent steps are the same as when the second resistance wire 1024 is provided, and will not be repeated here.

[0129] Functions and effects of Example 5

[0130] Compared to Embodiment 3, this embodiment also has the following effects: Since both ends of the second heat-sensitive component 1016 are exposed outside the heat-sensitive cylinder 1006, it can melt more quickly when heated than in Embodiment 3, so as to close the ventilation section in time, and at the same time reduce the amount of heat-sensitive material used.

[0131] Compared to Embodiment 4, this embodiment also has the following advantages: Because multiple vent holes 1025 are opened on the upper side wall of the thermal cylinder 1006, and multiple drain holes 1012 are opened on the lower side wall, high-temperature flue gas can enter the thermal cylinder 1006 more quickly to heat the second thermal component 1016, allowing the ventilation section to be closed in a timely manner. This method does not consume electrical energy, making it more energy-efficient and simpler. It is a purely mechanical mechanism, and the sealing and closing are also relatively rapid.

[0132] Example 6

[0133] In Embodiment Six, the same symbols are used for the same structures as in Embodiment One, and the same descriptions are omitted.

[0134] Figure 11 This is a top view of the self-driving device in Embodiment Six of the present invention.

[0135] Figure 12 This is a cross-sectional view of the self-driven device in Embodiment Six of the present invention.

[0136] like Figure 11-12 As shown, the self-driven device 10 includes: a heat-fused break piece 1017, a cylinder 1018, an energy storage spring 1019, a push rod 1020, a first fixing member 1021, and a second fixing member 1022. The rigid rod is the push rod 1020.

[0137] The thermosetting break 1017 is composed of two metal sheets connected by a heat-sensitive material, typically welded from a fusible alloy or bonded with heat-sensitive adhesive. The heat-sensitive material is initially solid; upon heating, it deforms or melts into a liquid and loses its adhesive strength, thus triggering the energy storage spring 1019. Specifically, each of the two metal sheets has multiple grooves 10171, and the positions of the grooves 10171 correspond one-to-one. The heat-sensitive material is located at the grooves 10171, i.e., the connection point between the two metal sheets is at the groove 10171. Alternatively, depending on requirements, the heat-sensitive material can be placed at the junction of the two metal sheets. Openings are provided at the ends of the two metal sheets of the thermosetting break 1017 that are furthest from each other.

[0138] The first fixing member 1021 is disposed at the opening of the thermosetting piece 1017 near the end of the cover 9, and the second fixing member 1022 is disposed at the opening of the thermosetting piece 1017 away from the cover 9.

[0139] A cylinder channel is provided on the side of the cylinder body 1018 away from the cover 9. A second fastener 1022 passes through the cylinder channel and is connected to the cylinder body 1018. The second fastener 1022 is fixed in a preset position.

[0140] The energy storage spring 1019 is located inside the cylinder 1018, with one side abutting against the cylinder 1018.

[0141] One end of the push rod 1020 is connected to the traction column 903 or a connecting rigid rod 1005 is added, and the other end abuts against the energy storage spring 1019. At this time, the energy storage spring 1019 is compressed by force.

[0142] The push rod 1020 has a push rod channel on the side near the cover 9. The first fixing member 1021 passes through the push rod channel and is connected to the push rod 1020. The first fixing member 1021 is not fixed and moves with the push rod 1020.

[0143] Figure 13 This is a top view of the self-driven device in the fuse-broken state in Embodiment Six of the present invention.

[0144] Figure 14 This is a cross-sectional view of the self-driven device in the fuse-broken state in Embodiment Six of the present invention.

[0145] like Figure 13-14As shown, when the battery module experiences thermal runaway or heats up to generate high-temperature fumes, the high-temperature fumes cause the heat-sensitive material to deform or melt. At this time, the metal sheets are no longer connected, triggering the energy storage spring 1019. One metal sheet is fixed in a preset position by the second fixing member 1022. The expansion of the energy storage spring 1019 pushes the push rod 1020 and another metal sheet to move closer to the cover 9, causing the cover 9 to move as a whole and close the ventilation section.

[0146] Functions and effects of Example 6

[0147] Similar to embodiments three and five, this embodiment's method of moving the cover 9 does not consume electrical energy; it only requires thermal energy to sense the high-temperature gas, enabling fully automatic closure. The high-temperature flue gas melts the heat-sensitive material connecting the two metal plates of the fusible link 1017, decoupling the metal plates. The energy storage spring 1019 expands upon triggering, moving the cover 9 as a whole and closing the ventilation section. This method requires no circuit control, is more energy-efficient and simpler, is a purely mechanical structure, minimizes the amount of heat-sensitive material used, and closes relatively quickly.

[0148] Example 7

[0149] This embodiment is a variation of Embodiment Six.

[0150] Figure 15 This is a schematic diagram of the structure of the self-driving device in Embodiment 7 of the present invention.

[0151] like Figure 15 As shown, the difference between this embodiment and embodiment six is ​​that it has an electric heating element 1023, such as an electric heating film, an electric heating sheet, or an electric heating wire.

[0152] The electric heating element 1023 is electrically connected to an external circuit.

[0153] Specifically, when it is necessary to actively shut down the ventilation section, the control circuit is activated to heat the electric heating element 1023, causing the heat-sensitive material to melt. The subsequent steps are the same as those without the electric heating element 1023, and will not be described again here.

[0154] The function and effect of Example 7

[0155] Similar to Examples 2 and 4, when an electric heating element 1023 is provided at the bottom of the heat-fused break 1017, the ventilator can be closed more quickly by controlling the power supply to the electric heating element 1023, making it more flexible to use. However, the heat-fused break 1017 is a disposable product; after the heat-sensitive material melts due to heat, a new heat-fused break 1017 needs to be replaced.

[0156] Example 8

[0157] In Example 8, the same symbols are used for the same structures as in Example 1, and the same descriptions are omitted.

[0158] Figure 16 This is a schematic diagram of the self-driving device in Embodiment 8 of the present invention.

[0159] like Figure 16 As shown, the self-driven device 10 is an electromagnetic starter, including a housing, a starting element, a spring 45, and a moving element. The rigid rod is a push rod 44.

[0160] The housing includes a housing 41 and a cover 41.1. The cover 41.1 is disposed on one side of the housing 41 and connected to the housing 41. The bottom of the housing 41 is a hollow cylindrical protrusion, and the cover 41.1 has a through hole in the middle for the top rod 44 to pass through.

[0161] The starting components include a coil winding 42, a ring coil frame 42.1, and a ring permanent magnet 43. The permanent magnet 43 can be a single piece or composed of multiple arc-shaped magnets.

[0162] A ring coil frame 42.1 is housed within a housing 41. A permanent magnet is placed on the outside of the coil frame 42.1, and a coil winding 42 is placed on the inside. A movable component, a top block 46, is located inside the ring coil frame 42.1. Both the housing 41 and the top block 46 are made of magnetized material. One side of the top block 46 is fixedly connected to a top rod 44, and the other side abuts against one side of a spring 45. The bottom of the housing 41 protrudes, contacting the outside of the ring coil frame 42.1 and the inside of the spring 45.

[0163] Figure 17 This is a schematic diagram of the energized state of the self-driven device in Embodiment 8 of the present invention.

[0164] like Figure 16 and 17 As shown, when not energized, the permanent magnet 43 magnetizes the top block 46, and the top block 46 is attracted to the protrusion of the housing 41 by magnetic force, compressing the spring 45 and storing potential energy. When the coil 42 is energized, electromagnetic induction generates a magnetic field, causing the magnetic force of the top block 46 to change, and under the push of the spring force, it moves to the left, reaching the leftmost position due to the magnetic force of the permanent magnet 43 and the cover 41.1 (based on...). Figure 17 (View angle), the push rod 44, fixed to the top block 46, thus moves. For the coil 42, the electromagnetic force generated by a short-term energization can weaken the initial magnetic force effect of the top block 46, thus eliminating the need for continuous energization and exhibiting low power consumption. This electromagnetic starter, after being energized, requires manual reset of the push rod 44 for future use.

[0165] The function and effect of Example 8

[0166] The top rod 44 of the electromagnetic starter pops out and can be completed instantly after power is applied. It can be used in application scenarios where the closing speed of the cover 9 is extremely important. It features low power consumption and higher safety.

[0167] Example 9

[0168] In Example 9, the same symbols are used for the same structures as in Example 1, and the same descriptions are omitted.

[0169] Figure 18 This is a schematic diagram of the self-driven device in Embodiment 9 of the present invention.

[0170] like Figure 18 As shown, the self-driven device 10 is an electromagnetic pin starter, including a housing, a starting element, a spring 32, and a moving element. The rigid rod is a push rod 35.

[0171] The housing part is a housing 31 formed by combining two housing components. The overall shape is cylindrical, and the two housing parts are connected by threads. A round hole is opened on the side of the housing 31 near the cover 9 for the top rod 35 to extend out.

[0172] The movable component is piston 34, and piston 34 and spring 32 are disposed inside housing 31. One side of piston 34 is connected to push rod 35, and the other side abuts against one side of spring 32. The other side of spring 32 abuts against the inner wall of housing 31 away from the circular hole.

[0173] The piston 34 has a locking groove on its upper part, which is preferably a V-shaped groove. The actuating element is an electromagnetic pin 33, which is located on the upper part of the housing 31 and corresponds to the position of the V-shaped groove. The electromagnetic pin 33 includes a coil 33.1, a moving iron core 33.2, a spring 33.3, a housing 33.4, a spring post 33.5, and a fastener 33.6.

[0174] The coil 33.1 is located on the outside of the housing 33.4. Inside the housing 33.4 are a moving iron core 33.2, a spring 33.3, and a spring post 33.5. The end of the moving iron core 33.2 near the V-groove is frustum-shaped and matches the V-groove. This end extends into the V-groove and is used as a locking pin to hold the piston 34.

[0175] One end of the spring 33.3 is connected to the moving iron core 33.2, and the other end abuts against one end of the spring post 33.5. The other end of the spring post 33.5 is connected to the outer casing 33.4 by a fastener 33.6.

[0176] Figure 19 This is a schematic diagram of the energized state of the self-driven device in Embodiment 9 of the present invention.

[0177] like Figure 18-19As shown, when no power is applied, the moving iron core 33.2 is blocked by the piston 34 due to the downward movement of the spring 33.3, and the spring 32 is compressed and confined to the right side of the housing 31 (based on...). Figure 18 (Perspective). When coil 33.1 is energized, the electromagnetic force lifts the moving iron core 33.2, causing it to disengage instantly from piston 34. Spring 32 pushes piston 34 to the left, and the distance piston 34 moves is the displacement distance of push rod 35. Because spring 32 has a large force and can be designed to be selectable, it can drive the cover 9 to move. After the electromagnetic pin self-drive is triggered, it needs to be manually reset for the next use.

[0178] Functions and effects of Example 9

[0179] The end of the moving iron core 33.2 near the V-groove is frustoconical, matching the V-groove of the piston 34. This end extends into the V-groove, facilitating locking and disengagement of the piston 34. When the electromagnetic pin actuator is triggered, the push rod 35 pops out instantly, enabling applications requiring high closing speeds. The electromagnetic pin 33 is identical to the electromagnetic components of industrial direct-acting solenoid valves, differing only in the bottom of the moving iron core 33.2; the technology is mature and easily mass-produced.

[0180] Variation Example 1

[0181] In Variation Example 1, the same symbols are given to the same structures as in Example 1, and the same descriptions are omitted.

[0182] Figure 20 This is a ventilation diagram of the cover being installed in the battery module housing in a modified example of the present invention.

[0183] Figure 21 This is a schematic diagram of the closing of the cap after displacement in a variation of the present invention.

[0184] like Figure 20-21 As shown, in this embodiment, the ventilation section consists of a plurality of ventilation holes 401 formed on the ventilation plate 4, and the ventilation holes 401 extend along the length direction. The plurality of ventilation holes 401 are evenly distributed along a first direction. In this embodiment, the first direction is the horizontal direction, and the ventilation holes 401 are evenly distributed along the horizontal direction. The ventilation plate 4 and the battery module housing are detachably connected by a plurality of bolts 6.

[0185] Multiple guide columns 7 are provided on the upper and lower sides of the ventilation plate 4.

[0186] The cover 5 has multiple guide holes 502 on its upper and lower sides, each corresponding to a plurality of guide posts 7. The guide posts 7 are slidably fitted into the guide holes 502. The extension direction of the guide holes 502 is a first direction; in this embodiment, the guide holes 502 are horizontally arranged. The cover 5 is connected to the ventilation plate 4 through the guide holes 502 and the guide posts 7, and can slide along the first direction. The cover 5 has multiple openings 501 corresponding to the ventilation holes 401. The distribution direction of the multiple openings 501 is the first direction.

[0187] Traction columns 503 are provided on both sides of the cover 5.

[0188] The self-driving device 10 is connected to the traction column 503 on either side to drive the cover 5 to slide relative to the ventilation plate 4, so that the opening 501 is offset from the ventilation hole 401, that is, the solid part of the cover 5 covers the ventilation hole 401 to close the ventilation section.

[0189] The above describes a modified example based on Embodiment 1. The ventilation panel 4 and the cover 5 can be provided to the customer as a single assembly. Furthermore, the cover 5 of this modified example can be combined with the self-driving device 10 of Embodiments 1 to 8 to drive the cover 5 to slide. Of course, the self-driving device 10 can also be mounted on the ventilation panel 4 and provided to the customer as a single assembly.

[0190] The function and effect of the first variation

[0191] When the automatic enclosure sealing 100 is used in practical applications, it can be adapted to the ventilation parts opened on the enclosure and the ventilation parts that can be detachably connected to the enclosure, which has high versatility and modular functions.

[0192] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sealing cover for closing multiple ventilation holes in the ventilation section of the casing, characterized in that: include: The cover is connected to the ventilation section and has multiple openings corresponding to the ventilation holes; as well as The self-driven mechanism, with its rigid rod connected to the cover, drives the cover to slide relative to the ventilation section, causing the multiple openings to be misaligned with the ventilation holes to close the ventilation section. The self-driven mechanism enables the rigid rod to move linearly via electric or spring drive.

2. The automatic sealing lid for the box shell according to claim 1, characterized in that: in, The self-driven device drives the rigid rod to move via the electric drive method. The self-driven device is an electric push rod, and the rigid rod is either the push rod of the electric push rod or a connecting rod of the push rod.

3. The automatic sealing lid for the box shell according to claim 1, Its features are: The self-driven device receives an electrical signal and drives the rigid rod to move using the spring-driven method. The self-driven device is an electromagnetic starter, and the rigid rod is a push rod. The self-driving device includes: Casing section; A starter element is located inside the housing portion, which causes a change in magnetic force when energized. A movable component is disposed inside the housing portion, with one end connected to the top rod; A spring is disposed inside the housing portion, with one end of the spring connected to the other end of the movable member, for driving the movable member and the push rod to move under the action of the actuating member.

4. The automatic sealing lid for the box shell according to claim 1, Its features are: The self-driven device receives an electrical signal and drives the rigid rod to move using the spring-driven method. The self-driven device is an electromagnetic pin starter, and the rigid rod is a push rod. The self-driving device includes: Casing section; A movable component is disposed inside the housing portion, with one end connected to the top rod, and has a locking pin groove; An actuating element is disposed on the upper part of the housing portion. The actuating element has a moving iron core corresponding to the position of the locking pin groove. The moving iron core extends into the locking pin groove and can move out of the locking pin groove after being energized. A spring is disposed inside the housing portion, with one end of the spring connected to the other end of the moving member and the other end connected to the inner wall of the housing portion, for driving the moving member and the push rod to move after the moving iron core exits the locking pin groove.

5. The automatic sealing lid for the box shell according to claim 1, Its features are: The self-driven mechanism senses heat, which causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driving device includes: The thermal cylinder has a first through hole on the side near the cover, and multiple drain holes are also provided. An energy storage spring is disposed inside the thermal cylinder and connected to the thermal cylinder on one side; The piston is connected on one side to the other side of the energy storage spring. The rigid rod is a movable push rod, with one end connected to the other side of the piston and the other end passing through the first through hole of the thermosensitive cylinder and connected to the cover.

6. The automatic sealing lid for the box shell according to claim 5, characterized in that: in, The self-driving device also includes a first thermal component disposed between the piston and the thermal cylinder, which has a through hole inside, through which the movable push rod passes.

7. The automatic sealing lid for the box shell according to claim 5, characterized in that: in, The thermal cylinder is further provided with second through holes on its upper and lower sides, and the piston is provided with a pin hole inside. The self-driving device also includes a second thermal component, which extends through the second through hole and the pin hole.

8. The automatic sealing lid for the box shell according to claim 1, Its features are: The self-driven mechanism senses heat, which causes the component to deform, thereby triggering the spring and driving the rigid rod to move. The self-driving device includes: A thermoplastic breaker is made of two metal sheets connected by a heat-sensitive material; The cylindrical body is connected to the heat-fused break piece; An energy storage spring is disposed inside the cylinder and connected to the cylinder on one side. The rigid rod is a top rod, with one side connected to the other side of the energy storage spring and the other side connected to the thermosetting break.

9. The automatic sealing lid for the box shell according to claim 6, characterized in that: in, The self-driven device heats the first thermally sensitive component by receiving an electrical signal. The heat sensed by the first thermally sensitive component causes the component to deform, which in turn triggers the spring and drives the rigid rod to move. The self-driving device also includes a first resistance wire disposed inside the first thermistor and electrically connected to an external circuit.

10. The automatic sealing lid for the box shell according to claim 7, characterized in that: in, The self-driven device heats the second thermally sensitive component by receiving an electrical signal. The heat sensed by the second thermally sensitive component causes the component to deform, which in turn triggers the spring and drives the rigid rod to move. The self-driving device also includes a second resistance wire disposed inside the second thermistor component. The second resistance wire is electrically connected to the external circuit.

11. The automatic sealing lid for the box shell according to claim 8, characterized in that: in, The self-driven device heats the thermoplastic break by receiving an electrical signal. The heat sensed by the thermoplastic break causes the component to deform, which in turn triggers the spring and drives the rigid rod to move. The self-driving device further includes an electric heating element disposed at the bottom of the thermosetting piece, the electric heating element being electrically connected to an external circuit.

12. The application of automatic casing sealing in battery module boxes, characterized by: The device has an automatic casing cover as described in any one of claims 1-11, wherein the automatic casing cover is used to close a plurality of ventilation holes in the ventilation section of the battery module housing.

13. The application of automatic enclosure sealing in electrical control cabinets, characterized by: The enclosure has an automatic sealing cover as described in any one of claims 1-11, the automatic sealing cover being used to close multiple ventilation holes in the ventilation section of the electrical control cabinet.

14. A method for automatically sealing and closing a casing, comprising using an automatic casing cover as described in any one of claims 1-11 to close a plurality of ventilation holes in the ventilation section of the casing, characterized in that, Specifically, the steps include the following: The self-driving device receives an electrical signal and drives the rigid rod to move linearly in an electric driving manner, causing the cover to slide relative to the ventilation part, so that the multiple openings are misaligned with the ventilation holes to close the ventilation part; or The self-driven device receives an electrical signal to trigger the starter, which in turn drives the rigid rod to move linearly by a spring, causing the cover to slide relative to the ventilation section, so that the multiple openings are misaligned with the ventilation holes to close the ventilation section. or The self-driven device receives an electrical signal and heats up, causing the heat-sensitive component to deform, which in turn triggers the spring and drives the rigid rod to move linearly, causing the cover to slide relative to the ventilation section, so that the multiple openings are misaligned with the ventilation holes to close the ventilation section.

15. A method for automatically closing a casing, comprising using an automatic casing cover as described in any one of claims 1-11 to close a plurality of ventilation holes in the ventilation section of the casing, characterized in that, Specifically, the steps include the following: The self-driven device senses heat, causing the heat-sensitive component to deform, which in turn triggers the spring and drives the rigid rod to move linearly, causing the cover to slide relative to the ventilation section, so that the multiple openings are misaligned with the ventilation holes to close the ventilation section.

16. The automatic sealing and closing method for the casing according to claim 14, characterized in that: in, The electrical signal is a shutdown command issued by the host system. A sensor is installed inside the enclosure to monitor the parameter values ​​inside the enclosure and transmit the monitoring results to the host system in real time. When the monitoring result is higher than a preset threshold, the host system issues the shutdown command. The parameter values ​​include: temperature, smoke, gas, infrared or ultraviolet.

Images