A new energy vehicle charging pile with fire-fighting function for non-open area

Abstract

The application relates to the technical field of new energy automobile supporting facilities, and discloses a new energy automobile charging pile with a fire-fighting function for a non-open area, which comprises a charging device, a high-pressure gas cylinder, a first dry powder tank and a second dry powder tank fixedly installed in the charging device, a high-pressure gas conveying pipe communicated with the high-pressure gas cylinder, a gas conveying connecting pipe communicated between the high-pressure gas conveying pipe and the first dry powder tank and the second dry powder tank, and a connecting column connected between the first dry powder tank and the second dry powder tank. Through the heat-absorbing metal block, the temperature-sensing glass plate assembly and the linkage mechanism composed of a lifting plate, a baffle and a trigger rod, physical sensing and mechanical logical judgment of a fire signal are realized, the fire extinguishing action is accurately locked at an initial fire position, the problem of blind spraying of a traditional device is solved, limited fire extinguishing agents are concentrated and directionally applied to a core fire source, and the initial fire extinguishing efficiency and success rate in a non-open space are improved.

Description

Technical Field

[0001] This invention relates to the field of supporting facilities for new energy vehicles, and in particular to a new energy vehicle charging pile with fire-fighting function for use in non-open-air areas. Background Technology

[0002] With the increasing popularity of new energy vehicles, the risk of fires caused by battery thermal runaway during charging has significantly increased, especially in confined spaces and poorly ventilated non-open areas where fires spread rapidly and are difficult to extinguish. Traditional charging stations lack integrated automatic fire suppression devices, while general fire protection systems are slow to respond and lack specificity, making it difficult to quickly suppress fires in specific areas such as the battery compartment or chassis in their early stages. Currently, there is a lack of a built-in fire suppression system in charging stations that can autonomously sense, accurately locate, and relay fires for extinguishing.

[0003] The existing technology has the following drawbacks:

[0004] The inability to accurately respond to the fire source: Traditional charging pile fire suppression systems mostly rely on smoke or temperature sensors to trigger spraying across the entire area, failing to differentiate between fire conditions in the upper part of the vehicle (such as the charging port and engine compartment) and the chassis (battery pack). This leads to indiscriminate application of extinguishing agents, failing to concentrate limited firefighting resources on the core fire source. In non-open spaces, this inefficient spraying not only delays the best time to extinguish the fire but also increases the risk of reignition or explosion due to the failure to suppress critical areas of battery thermal runaway.

[0005] Insufficient sustained fire suppression capability: In existing technologies, multiple dry powder canisters typically operate independently. Once one unit is activated and depleted, it cannot be replenished from other unactivated units. If the fire spreads from one location to another, the system cannot dynamically allocate dry powder resources, resulting in insufficient dosage after initial fire suppression to stop the fire's spread. This isolated design reduces the system's redundancy and reliability, making it difficult to cope with the challenges of sustained battery fires in enclosed environments. Summary of the Invention

[0006] Given the limitations of existing technologies, such as the inability to accurately respond to the location of a fire source and insufficient continuous fire extinguishing capabilities, a new energy vehicle charging pile with fire-fighting functions for non-open-air areas is proposed.

[0007] This application provides a new energy vehicle charging pile with fire-fighting function for non-open-air areas. Its purpose is to: achieve precise detection and directional spraying of dry powder at different fire locations on the vehicle by setting up an independent heat-absorbing metal block and heat-sensitive glass plate assembly, as well as a linkage baffle locking and high-pressure gas release mechanism triggered by the sequence of glass plate breakage; at the same time, through a one-way valve structure controlled by a sliding block, the lower dry powder tank can be used to replenish the upper dry powder tank with extinguishing agent, thereby forming a continuous relay fire extinguishing, which significantly improves the accuracy of initial fire extinguishing and the ability to suppress continuous fires, effectively addressing the fire risk in non-open-air spaces.

[0008] The technical solution of the present invention is as follows: a new energy vehicle charging pile with fire-fighting function for non-open-air areas, including a charging device, and a high-pressure gas cylinder, a first dry powder tank and a second dry powder tank fixedly installed inside the charging device. The high-pressure gas cylinder is connected to a high-pressure gas transmission pipe. The high-pressure gas transmission pipe is connected to the first dry powder tank and the second dry powder tank by a gas transmission connecting pipe. A connecting column is connected between the first dry powder tank and the second dry powder tank. It also includes a protruding outer shell fixedly installed outside the charging device. The outer walls of the first dry powder tank and the second dry powder tank are connected to dry powder nozzles. The two dry powder nozzles are embedded in the interior of the protruding outer shell.

[0009] The inner wall of the protruding outer shell is equipped with two symmetrically arranged heat-absorbing metal blocks and two support blocks. A temperature-sensing glass plate is installed between the heat-absorbing metal blocks and the corresponding support blocks. A central plate is fixedly connected to the inner wall of the protruding outer shell. A trigger groove is opened on the inner wall of the central plate. A trigger mechanism is set inside the trigger groove.

[0010] The heat-absorbing metal block absorbs the high temperature of the fire, and the heat-sensing glass plate breaks after absorbing and transferring heat. After the heat-sensing glass plate breaks, the triggering mechanism first activates the high-pressure gas pipeline and then releases the blockage of the corresponding dry powder nozzle.

[0011] The above scheme utilizes the physical properties of heat-absorbing metal blocks and temperature-sensitive glass plates to achieve passive fire detection. Then, a triggering mechanism converts the breakage signal into a series of sequentially controllable mechanical actions, reliably opening the high-pressure gas path and fire extinguishing nozzles. Furthermore, by utilizing the pressure-sensitive valve within the connecting column, intelligent, unidirectional, and on-demand replenishment of dry powder between the two dry powder tanks is achieved. This not only extends the duration of the primary fire extinguishing operation but also preserves backup fire extinguishing capabilities, forming a purely mechanical, external energy-independent, rapidly responsive, and intelligent resource allocation-specific fire-fighting device for new energy vehicles.

[0012] Furthermore, the triggering mechanism includes two lifting plates, which are symmetrically arranged in the triggering groove. An inclined block is fixedly connected to the end of the lifting plate near the center plate, and a lifting frame is fixedly connected to the end of the lifting plate away from the center plate. A first telescopic spring is connected between the lifting frame and the center plate.

[0013] Furthermore, the initial position of the lifting frame is supported by a temperature-sensitive glass plate, and a baffle is fixedly connected to the inner wall of the lifting frame. The inner wall of the baffle has a through hole, and the baffle slides in a direction perpendicular to the axis of the dry powder nozzle.

[0014] The above scheme achieves safety locking and passive triggering by setting a temperature-sensing glass plate. The lifting plate and lifting structure form the core motion skeleton. The inclined block cleverly converts vertical motion into horizontal piercing action, realizing the logic of air circuit opening first. The baffle and its through hole act as mechanical valves to precisely control the opening timing of the nozzle, forming a pure mechanical automatic control system that is fast-responding, reliable in action, and rigorous in sequence.

[0015] Furthermore, a trigger rod is slidably connected to the inner wall of the center plate, and a force-bearing crossbar is fixedly connected to one end of the trigger rod near the lifting plate. The outer wall of the force-bearing crossbar abuts against the inclined surface of the inclined block.

[0016] Furthermore, a limiting block is fixedly connected to the middle section of the trigger rod, and a third telescopic spring is connected between the limiting block and the inner wall of the center plate. A rod tip is fixedly connected to the end of the trigger rod away from the lifting plate, and the rod tip is located inside the high-pressure gas transmission pipe.

[0017] By adopting the above scheme and setting a trigger rod, the signal of glass breaking is converted into a mechanical action of piercing the high-pressure gas circuit. As the core execution component, it ensures the strict working sequence of the fire extinguishing system: first, the high-pressure gas source is turned on, and then the dry powder nozzle is opened. It achieves fast, reliable and automatic triggering without external energy in a purely mechanical way.

[0018] Furthermore, a ring frame is fixedly connected to the middle section of the high-pressure gas transmission pipe, and multiple conical blocks are slidably connected to the inner wall of the ring frame. A return spring is connected between the conical blocks and the inner wall of the ring frame, and a tension diaphragm is connected between the multiple conical blocks. After the trigger rod is triggered, it pierces the tension diaphragm through the rod head.

[0019] By adopting the above scheme, a controlled normally closed gas valve is formed inside the high-pressure gas pipeline by setting up a ring frame and a tension diaphragm. The tension diaphragm, supported by multiple conical blocks, can reliably seal the high-pressure gas for a long time. When the rod head punctures the diaphragm, the structure can be destroyed instantly and completely with minimal resistance, ensuring that the high-pressure gas can be released quickly without delay or leakage, providing immediate start-up power for the fire extinguishing system.

[0020] Furthermore, two locking plate pillars are symmetrically arranged inside the trigger groove. The locking plate pillars move along the matching contour of the corresponding inclined block and the lifting plate, and when the lifting plate descends to the position where the through hole aligns with the dry powder nozzle, they are inserted into the locking plate hole opened in the inner wall of the lifting plate to lock the lifting plate.

[0021] Furthermore, a second telescopic spring is connected between the outer wall of each of the two locking plate pillars and the inner wall of the trigger groove. A guide block is fixedly connected to the outer wall of the locking plate pillar, and the outer wall of the guide block is slidably connected to the inner wall of the trigger groove.

[0022] By adopting the above scheme, the mechanical self-locking of the working position of the lifting plate is achieved through the setting of locking plate columns. During the descent of the lifting plate, its inclined block pushes the two locking plate columns apart. When the lifting plate is lowered into place and the through hole is precisely aligned with the dry powder nozzle, the locking plate columns are immediately inserted into the locking plate hole under the push of the second telescopic spring. This structure can reliably lock the lifting plate, ensuring that the dry powder channel remains unobstructed and stable during the discharge, preventing accidental closure due to airflow impact or vibration, thereby ensuring the effective completion of the fire extinguishing action.

[0023] Furthermore, the inner wall of the connecting column is provided with a through hole, through which the first dry powder tank and the second dry powder tank are connected. The inner wall of the connecting column is also provided with two symmetrically arranged inclined sliding grooves. The inner walls of the two inclined sliding grooves are fixedly connected with guide strips, and the outer walls of the guide strips are slidably connected with inclined sliders. When the two inclined sliders are combined in the initial state, they block the through hole.

[0024] By adopting the above scheme and setting up connecting columns, intelligent linkage and dynamic management of dry powder reserves between the two dry powder tanks are realized. Its function is to automatically control the flow of dry powder between the tanks according to the fire triggering sequence. When the upper tank sprays, the pressure in the lower tank will push its corresponding inclined slider to slide along the inclined groove, thereby pushing the two merged inclined sliders apart, opening the through hole, so that the dry powder in the lower tank can be replenished to the upper tank in time, ensuring the continuity of fire extinguishing. If only the lower tank needs to be extinguished, the structure can reliably block the connection, prevent the ineffective loss of dry powder, and preserve a complete reserve for possible relay firefighting, thereby significantly improving the system's resource utilization efficiency and overall fire extinguishing reliability.

[0025] The beneficial effects of this invention are:

[0026] 1. By using heat-absorbing metal blocks and temperature-sensing glass plate assemblies, along with a linkage mechanism consisting of a lifting plate, baffle, and trigger rod, the fire area of ​​the vehicle is divided into the upper part and the chassis. Each set of heat-absorbing metal blocks and temperature-sensing glass plates senses temperature independently. When a specific part catches fire, the corresponding glass plate breaks first due to heat, releasing the lifting plate it supports. The lowering of the lifting plate drives the trigger rod to puncture the high-pressure gas circuit and causes the baffle to slide, thereby opening the corresponding dry powder nozzle. This achieves physical perception and mechanical logic judgment of the fire signal, accurately locking the fire extinguishing action at the initial location of the fire. This solves the problem of blind spraying in traditional devices, concentrating and directing the limited extinguishing agent to the core fire source, improving the efficiency and success rate of extinguishing initial fires in non-open spaces.

[0027] 2. The system utilizes a connecting column structure with inclined grooves and sliders between two dry powder tanks. Initially, the sliders seal the through hole between the two tanks. When the upper dry powder tank is activated and its internal pressure decreases, the higher pressure in the lower tank pushes the sliders along the inclined grooves, opening the through hole and forming a one-way dry powder supply channel from bottom to top. This enables intelligent dynamic allocation of the extinguishing agent, allowing untriggered tank resources to support triggered tanks as needed. This overcomes the shortcomings of multiple dry powder tanks working in isolation and failing when resources are exhausted. When facing a fire spreading from one location to another, the system can form a continuous relay firefighting capability, enhancing the redundancy and overall suppression effect in dealing with persistent battery fires.

[0028] 3. By setting up a matching structure between the locking plate column and the locking plate hole on the lifting plate, during the process of the lifting plate being triggered to descend, its inclined block first pushes the two locking plate columns apart. When the lifting plate descends to the position where the baffle through hole and the dry powder nozzle are precisely aligned, the locking plate column rebounds under the action of the spring and inserts into the locking plate hole, thereby mechanically locking the lifting plate. In this way, after the triggering sequence is completed, the key moving parts are fixed to prevent them from being displaced or rebounding under the impact of high-pressure airflow or environmental vibration, ensuring that the dry powder spray channel remains unobstructed continuously and stably during fire extinguishing, and improving the ultimate reliability of the entire fire protection system. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the dry powder nozzle structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure at the center plate of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the lifting plate of the present invention;

[0033] Figure 5This is a schematic diagram of the trigger rod structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the trigger slot structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure at the ring frame of the present invention;

[0036] Figure 8 This is a schematic diagram showing the state of the upper lifting plate when it moves downwards according to the present invention;

[0037] Figure 9 For the present invention Figure 8 Enlarged structural diagram of point A in the middle;

[0038] Figure 10 This is a schematic diagram of the connecting column structure of the present invention;

[0039] Figure 11 This is a schematic diagram of the through hole in the present invention when it is open.

[0040] In the picture:

[0041] 1. Charging device; 11. High-pressure gas cylinder; 12. First dry powder tank; 13. Second dry powder tank; 14. Dry powder nozzle; 15. Connecting column; 151. Through hole; 152. Slanted slide groove; 153. Guide bar; 154. Slanted slider; 2. Protruding outer shell; 21. Heat-absorbing metal block; 22. Temperature-sensing glass plate; 23. Support block; 24. Center plate; 25. Trigger groove; 3. High-pressure gas transmission pipe; 31. Ring frame; 311. Return spring; 312 5. Conical block; 313. Tension diaphragm; 32. Gas supply connection pipe; 5. Triggering mechanism; 51. Lifting plate; 511. Lifting frame; 512. Baffle; 513. Through hole; 514. First telescopic spring; 515. Inclined block; 52. Locking plate post; 521. Guide block; 522. Second telescopic spring; 523. Locking plate hole; 53. Trigger rod; 531. Third telescopic spring; 532. Limiting block; 533. Force-bearing crossbar; 534. Rod head spike. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Reference Figure 1 - Figure 11A new energy vehicle charging pile with fire-fighting function for non-open-air areas is provided, including a charging device 1, and a high-pressure gas cylinder 11, a first dry powder tank 12 and a second dry powder tank 13 fixedly installed inside the charging device 1. The high-pressure gas cylinder 11 is connected to a high-pressure gas transmission pipe 3. The high-pressure gas transmission pipe 3 is connected to the first dry powder tank 12 and the second dry powder tank 13 by a gas transmission connecting pipe 32. A connecting column 15 is connected between the first dry powder tank 12 and the second dry powder tank 13. The charging device 1 also includes a protruding outer shell 2 fixedly installed outside the charging device 1. The outer walls of the first dry powder tank 12 and the second dry powder tank 13 are connected to dry powder nozzles 14. Both dry powder nozzles 14 are embedded inside the protruding outer shell 2.

[0044] Reference Figure 2 - Figure 6 Two heat-absorbing metal blocks 21 and two support blocks 23 are symmetrically arranged on the inner wall of the protruding outer shell 2. A temperature-sensing glass plate 22 is installed between the heat-absorbing metal block 21 and the corresponding support block 23. A central plate 24 is fixedly connected to the inner wall of the protruding outer shell 2. A trigger groove 25 is opened on the inner wall of the central plate 24. A trigger mechanism 5 is set inside the trigger groove 25. The heat-absorbing metal block 21 absorbs the high temperature of the fire. After the temperature-sensing glass plate 22 absorbs and transfers heat, it breaks. After the temperature-sensing glass plate 22 breaks, the trigger mechanism 5 first opens the high-pressure gas pipeline 3, and then releases the blockage of the corresponding dry powder nozzle 14.

[0045] Specifically, the high-pressure gas cylinder 11 stores high-pressure inert gas, which is the high-pressure power source driving the dry powder extinguishing spray; the protruding outer shell 2 is the protective cover of the detection and triggering mechanism 5, and also the installation and directional spray outlet of the dry powder nozzle 14; the two dry powder nozzles 14 are respectively aimed at the key fire parts of the vehicle for precise fire extinguishing; the heat-absorbing metal block 21 utilizes the excellent thermal conductivity of metal to quickly absorb and concentrate the high temperature generated by the flame, providing a concentrated heat source for the heat-sensing glass plate 22; the heat-sensing glass plate 22 is the fire detection and mechanical triggering signal source, and when the absorbed heat reaches its specific shattering temperature, it instantly breaks physically; the triggering mechanism 5 is the mechanical control core of the fire response, automatically executing the two key actions of puncturing the gas path and opening the nozzle in a preset sequence, and finally locking in the spraying state to ensure the stable and reliable fire extinguishing process.

[0046] The passive fire detection is achieved through the physical properties of the heat-absorbing metal block 21 and the temperature-sensing glass plate 22. Then, the breakage signal is converted into a series of sequentially controllable mechanical actions by the triggering mechanism 5, which reliably opens the high-pressure gas path and the fire extinguishing nozzle. The pressure-sensitive valve in the connecting column 15 is used to realize the intelligent, unidirectional, and on-demand replenishment of dry powder between the two dry powder tanks. This not only extends the duration of the main fire extinguishing point but also retains the backup fire extinguishing capability, forming a set of pure mechanical fire-fighting devices for new energy vehicles that do not rely on external energy, respond quickly, and have a certain intelligent resource allocation capability.

[0047] Reference Figure 3 - Figure 9 The triggering mechanism 5 includes two lifting plates 51, which are symmetrically arranged in the triggering groove 25. An inclined block 515 is fixedly connected to one end of the lifting plate 51 near the center plate 24, and a lifting frame 511 is fixedly connected to the other end of the lifting plate 51 away from the center plate 24. A first telescopic spring 514 is connected between the lifting frame 511 and the center plate 24. The initial position of the lifting frame 511 is supported by the temperature-sensing glass plate 22. A baffle 512 is fixedly connected to the inner wall of the lifting frame 511. A through hole 513 is opened on the inner wall of the baffle 512. The baffle 512 slides in a direction perpendicular to the axis of the dry powder nozzle 14.

[0048] Specifically, the inclined structure of the inclined block 515 converts the vertical descent of the lifting plate 51 into a horizontal thrust on the force-bearing crossbar 533, thereby driving the trigger rod 53 to complete the piercing action; the function of the lifting frame 511 is to serve as a rigid support for fixing the baffle 512, ensuring that the baffle 512 can move precisely with the lifting system; the baffle 512 is a solid gate that completely covers the inlet of the dry powder nozzle 14 in the initial position, and the through hole 513 on it is a preset channel opening.

[0049] Safety locking and passive triggering are achieved by setting a temperature-sensing glass plate 22. The lifting plate 51 and the lifting frame 511 constitute the core motion skeleton. The inclined block 515 cleverly converts the vertical motion into a horizontal piercing action, realizing the logic of opening the air passage first. The baffle 512 and its through hole 513 act as mechanical valves to precisely control the opening timing of the nozzle, forming a set of pure mechanical automatic control system with rapid response, reliable action, and strict sequence.

[0050] Reference Figure 3 - Figure 9 A trigger rod 53 is slidably connected to the inner wall of the center plate 24. A force-bearing crossbar 533 is fixedly connected to one end of the trigger rod 53 near the lifting plate 51. The outer wall of the force-bearing crossbar 533 abuts against the inclined surface of the inclined block 515. A limit block 532 is fixedly connected to the middle section of the trigger rod 53. A third telescopic spring 531 is connected between the limit block 532 and the inner wall of the center plate 24. A rod tip spike 534 is fixedly connected to one end of the trigger rod 53 away from the lifting plate 51. The rod tip spike 534 is located inside the high-pressure gas transmission pipe 3.

[0051] Specifically, the trigger rod 53 is a rigid rod that slides laterally within the center plate 24. Its core function is to convert the received lateral thrust into a piercing action that breaks the high-pressure air pipe. The force-bearing crossbar 533 efficiently converts the inclined angle thrust applied by the inclined block 515 into a horizontal component that pushes the trigger rod 53 to slide laterally, and is the key force point for converting vertical motion into horizontal motion. The inclined block 515 converts the linear vertical descent motion of the lifting plate 51 into a stable lateral thrust on the force-bearing crossbar 533. The rod head spike 534 is made of hard material and is the final membrane-breaking actuator.

[0052] By setting the trigger rod 53, the glass plate breakage signal is converted into a mechanical action to puncture the high-pressure gas circuit. As the core execution component, it ensures the strict working sequence of the fire extinguishing system: first, the high-pressure gas source is turned on, and then the dry powder nozzle 14 is opened. It achieves fast, reliable, and automatic triggering without external energy in a purely mechanical manner.

[0053] Reference Figure 2 - Figure 7 A ring frame 31 is fixedly connected to the middle section of the high-pressure gas transmission pipe 3. Multiple conical blocks 312 are slidably connected to the inner wall of the ring frame 31. A return spring 311 is connected between the conical blocks 312 and the inner wall of the ring frame 31. Tension diaphragms 313 are connected between the multiple conical blocks 312. After the trigger rod 53 is triggered, it pierces the tension diaphragm 313 through the rod head spike 534.

[0054] By setting up the ring frame 31 and the tension diaphragm 313, a controlled normally closed gas valve is formed inside the high-pressure gas pipeline 3. The tension diaphragm 313, supported by multiple conical blocks 312, can reliably seal the high-pressure gas for a long time. When the rod tip 534 pierces the diaphragm, the structure can be destroyed instantly and completely with minimal resistance, ensuring that the high-pressure gas can be released quickly without delay or leakage, providing immediate start-up power for the fire extinguishing system.

[0055] Reference Figure 3 - Figure 9 Two locking plate pillars 52 are symmetrically arranged inside the trigger groove 25. The locking plate pillars 52 move along the matching contour of the corresponding inclined block 515 and the lifting plate 51. When the lifting plate 51 descends to the position where the through hole 513 is aligned with the dry powder nozzle 14, it is inserted into the locking plate hole 523 opened in the inner wall of the lifting plate 51 to lock the lifting plate 51. The outer walls of the two locking plate pillars 52 are connected to the inner wall of the trigger groove 25, and the outer walls of the locking plate pillars 52 are fixedly connected to the guide block 521. The outer walls of the guide block 521 are slidably connected to the inner wall of the trigger groove 25.

[0056] The locking plate column 52 achieves mechanical self-locking of the working position of the lifting plate 51. During the descent of the lifting plate 51, its inclined block 515 pushes the two locking plate columns 52 apart. When the lifting plate 51 is lowered into place and the through hole 513 is precisely aligned with the dry powder nozzle 14, the locking plate column 52 is immediately inserted into the locking plate hole 523 under the push of the second telescopic spring 522. This structure can reliably lock the lifting plate 51, ensuring that the dry powder channel remains unobstructed and stable during the discharge, preventing accidental closure due to airflow impact or vibration, thereby ensuring the effective completion of the fire extinguishing action.

[0057] Reference Figure 8 - Figure 11 The inner wall of the connecting column 15 is provided with a through hole 151. The first dry powder tank 12 and the second dry powder tank 13 are connected through the through hole 151. The inner wall of the connecting column 15 is also provided with two symmetrically arranged inclined sliding grooves 152. The inner walls of the two inclined sliding grooves 152 are fixedly connected with guide strips 153. The outer walls of the guide strips 153 are slidably connected with inclined sliders 154. When the two inclined sliders 154 are combined in the initial state, they block the through hole 151.

[0058] Specifically, the through hole 151 is a central channel opened in the inner wall of the connecting column 15. When it is opened, it allows the dry powder in the first dry powder tank 12 and the second dry powder tank 13 to flow to each other. The inclined slider 154 is the active valve core and pressure sensing actuator of the entire control mechanism. In the initial state, the two inclined sliders 154 merge in the center and jointly block the through hole 151 to isolate the two tanks.

[0059] The connecting column 15 enables intelligent linkage and dynamic management of dry powder reserves between the two dry powder tanks. Its function is to automatically control the flow of dry powder between the tanks according to the fire triggering sequence. When the upper tank sprays, the pressure inside the lower tank will push its corresponding inclined slider 154 to slide along the inclined slide groove 152, thereby pushing the two merged inclined sliders 154 apart and opening the through hole 151, so that the dry powder in the lower tank can be replenished to the upper tank in time, ensuring the continuity of fire extinguishing. If only the lower tank needs to be extinguished, the structure can reliably block the connection, prevent the ineffective loss of dry powder, and preserve a complete reserve for possible relay firefighting, thereby significantly improving the system's resource utilization efficiency and overall fire extinguishing reliability.

[0060] Working principle of the invention:

[0061] When a new energy vehicle catches fire near a charging station in a non-open-air area, the heat-absorbing metal block 21 on the inner wall of the charging station casing will quickly absorb the heat of the flame. A heat-sensing glass plate 22 is installed between the heat-absorbing metal block 21 and the support block 23. When the heat transfer causes it to reach the shattering temperature, the heat-sensing glass plate 22 will immediately shatter. The upper and lower heat-sensing glass plates 22 correspond to the fire in the upper part of the vehicle and the chassis, respectively, and can be triggered individually or simultaneously.

[0062] After the temperature-sensing glass plate 22 breaks, the lifting frame 511 supported by it loses its support and begins to descend under the tension of the first telescopic spring 514. The lifting frame 511 drives the lifting plate 51 fixed to it to move down along the trigger groove 25. The inclined block 515 fixed to one end of the lifting plate 51 descends accordingly, pushing the force-bearing horizontal bar 533 that is always against its inclined surface. This pushes the trigger rod 53 to overcome the resistance of the third telescopic spring 531 and slide towards the high-pressure gas transmission pipe 3. The rod tip 534 at the other end of the trigger rod 53 then pierces the tension diaphragm 313 inside the high-pressure gas transmission pipe 3.

[0063] After the tension diaphragm 313 is punctured, the high-pressure gas in the high-pressure gas cylinder 11 enters the first dry powder tank 12 and the second dry powder tank 13 through the high-pressure gas transmission pipe 3 and the gas transmission connection pipe 32 to establish the initial gas pressure.

[0064] At the same time, the baffle 512 fixed to the inner wall of the lifting frame 511 descends together with the lifting plate 51. In the initial state, the baffle 512 blocks the inlet of the dry powder nozzle 14 with its solid part. As the lifting plate 51 descends to a specific position, the through hole 513 on the baffle 512 will move to a position that is completely aligned with the axis of the dry powder nozzle 14, opening the spray channel.

[0065] During this process, the locking plate column 52 in the trigger groove 25, under the action of the second telescopic spring 522, always slides along the side wall of the inclined block 515 and the lifting plate 51. When the through hole 513 is fully aligned with the dry powder nozzle 14, the end of the locking plate column 52 is just aligned with the locking plate hole 523 on the inner wall of the lifting plate 51. Driven by the spring, it is quickly inserted, firmly locking the lifting plate 51 and the baffle 512 in the working position to ensure the stability of subsequent spraying.

[0066] When the high-pressure gas fills the dry powder canister, the gas pressure inside the canister increases sharply, and the dry powder is ejected at high speed from the dry powder nozzle 14 through the aligned through hole 513 to extinguish the fire.

[0067] If the fire source is located above, causing the upper heat-sensing glass plate 22 to break first and triggering the upper fire extinguishing, at this time, since the gas supply connection pipe 32 has pressurized the lower second dry powder tank 13, the dry powder inside will push the inclined slider 154 on this side, causing the two inclined sliders 154 to slide relative to each other in the inclined sliding groove 152 of the connecting column 15, thereby opening the through hole 151. The dry powder in the lower tank can then be replenished to the upper first dry powder tank 12 through the through hole 151 under the action of pressure difference, ensuring the continuous effectiveness of the upper fire extinguishing.

[0068] Conversely, if the fire source occurs below, causing the lower heat-sensing glass plate 22 to break, the lower dry powder nozzle 14 will spray. At this time, although the upper first dry powder canister 12 has been pressurized, its triggering mechanism 5 has not been activated, and the baffle 512 still blocks the upper nozzle, so no powder is sprayed. At the same time, since the upper nozzle is not opened, the pressure inside the canister forms a back pressure, supporting the inclined slider 154 on its side, so that the two inclined sliders 154 remain in a closed abutment position in the center, thereby blocking the through hole 151 and ensuring that the upper dry powder will not flow downward. In this way, if the fire below is not extinguished and spreads upward, causing the upper heat-sensing glass plate 22 to break subsequently, the complete dry powder reserve in the upper first dry powder canister 12 can be immediately put into fire extinguishing, forming a reliable relay firefighting.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A new energy vehicle charging pile with fire-fighting function for non-open-air areas, comprising a charging device (1), and a high-pressure gas cylinder (11), a first dry powder tank (12), and a second dry powder tank (13) fixedly installed inside the charging device (1), wherein the high-pressure gas cylinder (11) is connected to a high-pressure gas transmission pipe (3), and a gas transmission connecting pipe (32) is connected between the high-pressure gas transmission pipe (3) and both the first dry powder tank (12) and the second dry powder tank (13), and a connecting column (15) is connected between the first dry powder tank (12) and the second dry powder tank (13), characterized in that: It also includes a protruding outer shell (2) fixedly installed outside the charging device (1), and the outer walls of the first dry powder canister (12) and the second dry powder canister (13) are connected to dry powder nozzles (14), and the two dry powder nozzles (14) are embedded inside the protruding outer shell (2). The inner wall of the protruding outer shell (2) is equipped with two symmetrically arranged heat-absorbing metal blocks (21) and two support blocks (23). A temperature-sensing glass plate (22) is installed between the heat-absorbing metal blocks (21) and the corresponding support blocks (23). A central plate (24) is fixedly connected to the inner wall of the protruding outer shell (2). A trigger groove (25) is opened on the inner wall of the central plate (24). A trigger mechanism (5) is provided inside the trigger groove (25). The heat-absorbing metal block (21) absorbs the high temperature of the fire, and the heat-sensing glass plate (22) breaks after absorbing and transferring heat. After the heat-sensing glass plate (22) breaks, the triggering mechanism (5) first activates the high-pressure gas pipeline (3) and then releases the blockage of the corresponding dry powder nozzle (14).

2. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 1, characterized in that: The triggering mechanism (5) includes two lifting plates (51), which are symmetrically arranged in the triggering groove (25). An inclined block (515) is fixedly connected to one end of the lifting plate (51) near the center plate (24), and a lifting frame (511) is fixedly connected to the other end of the lifting plate (51) away from the center plate (24). A first telescopic spring (514) is connected between the lifting frame (511) and the center plate (24).

3. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 2, characterized in that: The initial position of the lifting frame (511) is supported by the temperature-sensitive glass plate (22). A baffle (512) is fixedly connected to the inner wall of the lifting frame (511). A through hole (513) is opened on the inner wall of the baffle (512). The baffle (512) slides in a direction perpendicular to the axis of the dry powder nozzle (14).

4. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 3, characterized in that: The inner wall of the center plate (24) is slidably connected to a trigger rod (53), and the end of the trigger rod (53) near the lifting plate (51) is fixedly connected to a force-bearing crossbar (533). The outer wall of the force-bearing crossbar (533) abuts against the inclined surface of the inclined block (515).

5. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 4, characterized in that: The middle section of the trigger rod (53) is fixedly connected to a limiting block (532), and a third telescopic spring (531) is connected between the limiting block (532) and the inner wall of the center plate (24). The end of the trigger rod (53) away from the lifting plate (51) is fixedly connected to a rod head spike (534), and the rod head spike (534) is located inside the high-pressure gas transmission pipe (3).

6. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 5, characterized in that: The middle section of the high-pressure gas transmission pipe (3) is fixedly connected to an annular frame (31). Multiple conical blocks (312) are slidably connected to the inner wall of the annular frame (31). A return spring (311) is connected between the conical blocks (312) and the inner wall of the annular frame (31). Tension diaphragms (313) are connected between the multiple conical blocks (312). After the trigger rod (53) is triggered, it pierces the tension diaphragm (313) through the rod head spike (534).

7. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 4, characterized in that: Two locking plate posts (52) are symmetrically arranged inside the trigger groove (25). The locking plate posts (52) move along the matching contour of the corresponding inclined block (515) and the lifting plate (51). When the lifting plate (51) descends to the position where the through hole (513) is aligned with the dry powder nozzle (14), the locking plate posts (523) are inserted into the locking plate hole (523) opened on the inner wall of the lifting plate (51) to lock the lifting plate (51).

8. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 7, characterized in that: A second telescopic spring (522) is connected between the outer wall of the two locking plate pillars (52) and the inner wall of the trigger groove (25). A guide block (521) is fixedly connected to the outer wall of the locking plate pillar (52), and the outer wall of the guide block (521) is slidably connected to the inner wall of the trigger groove (25).

9. The new energy vehicle charging pile with fire-fighting function for non-open-air areas according to claim 1, characterized in that: The inner wall of the connecting column (15) is provided with a through hole (151). The first dry powder tank (12) and the second dry powder tank (13) are connected through the through hole (151). The inner wall of the connecting column (15) is also provided with two symmetrically arranged inclined sliding grooves (152). The inner walls of the two inclined sliding grooves (152) are fixedly connected with guide strips (153). The outer walls of the guide strips (153) are slidably connected with inclined sliders (154). When the two inclined sliders (154) are combined in the initial state, they block the through hole (151).

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