Super pile with new energy vehicle fire extinguishing device

Abstract

This utility model relates to a supercharging pile with a fire extinguishing device for new energy vehicles, belonging to the field of new energy vehicle technology. It solves the technical problem of excessive space occupation caused by the independent design of the heat dissipation system and fire extinguishing system in existing supercharging piles. The supercharging pile includes a fire extinguisher, an electrical module, an immersion liquid storage tank, a liquid booster pump, and a supercharging pile body. The fire extinguisher is mounted on the supercharging pile body. The immersion liquid storage tank is located inside the supercharging pile body and stores liquid media for heat dissipation and fire extinguishing. The electrical module is immersed in the immersion liquid storage tank. The liquid booster pump is connected between the immersion liquid storage tank and the fire extinguisher. The supercharging pile body acts as an integrated carrier, housing the immersion liquid storage tank, the liquid booster pump, and the fire extinguisher. This achieves space sharing between the heat dissipation system and the fire extinguishing system, improves the internal space utilization of the supercharging pile, and allows more charging units to be accommodated in the same area, effectively saving space.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a supercharging pile with a fire extinguishing device for new energy vehicles. Background Technology

[0002] With the popularization of new energy vehicles, fast charging technology (supercharging technology) has become one of the key factors driving its widespread application. As an important infrastructure for fast charging of new energy vehicles, the safety and reliability of supercharging piles are of paramount importance. However, existing supercharging piles face the following technical problems in practical use:

[0003] The integration of heat dissipation and fire extinguishing systems is a problem. Traditionally, the heat dissipation and fire extinguishing systems of supercharging piles are designed separately. The heat dissipation system cannot take on the fire extinguishing function at the same time, while the fire extinguishing system requires additional equipment and space. This separate design not only increases costs but may also lead to insufficient coordination between systems. For example, the heat dissipation system and the fire extinguishing system may require independent liquid circulation and control devices, which increases the complexity of the system and the risk of failure. Since the heat dissipation and fire extinguishing systems need to occupy space separately, the overall volume and footprint of the supercharging pile need to be increased, which may become a limiting factor in limited installation space, especially in space-constrained areas such as urban centers. Utility Model Content

[0004] Based on the above analysis, this utility model aims to provide a supercharging pile with a fire extinguishing device for new energy vehicles, in order to solve the technical problem that the existing supercharging piles have an independent design of heat dissipation system and fire extinguishing system, resulting in excessive space occupation.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] A supercharging pile with a fire extinguishing device for new energy vehicles includes a fire extinguishing gun, an electrical module, an immersion liquid storage tank, a liquid booster pump, and a supercharging pile body. The fire extinguishing gun is mounted on the supercharging pile body. The immersion liquid storage tank is located inside the supercharging pile body and stores a liquid medium for heat dissipation and fire extinguishing. The electrical module is immersed in the immersion liquid storage tank for controlling the charging process. The liquid booster pump is connected between the immersion liquid storage tank and the fire extinguishing gun to pump the liquid medium to the fire extinguishing gun for fire extinguishing.

[0007] Furthermore, the supercharging pile equipped with a fire extinguishing device for new energy vehicles also includes a fire extinguisher locking assembly. The fire extinguisher locking assembly is disposed on the body of the supercharging pile, and the fire extinguisher is hung on the fire extinguisher locking assembly. When the fire extinguisher is hung on the fire extinguisher locking assembly, the fire extinguisher locking assembly disconnects the power supply to the liquid booster pump. When the fire extinguisher is detached from the fire extinguisher locking assembly, the fire extinguisher locking assembly connects the power supply to the liquid booster pump.

[0008] Furthermore, the fire extinguisher locking assembly includes a pressure trigger switch and a relay. The pressure trigger switch is abutted against the fire extinguisher, and the relay is connected to the pressure trigger switch to control the opening and closing of the liquid booster pump.

[0009] Furthermore, the immersion liquid storage tank is equipped with heat dissipation fins to increase the heat dissipation area.

[0010] Furthermore, the immersion liquid storage tank is connected to a circulation pump to achieve the circulation of the liquid medium.

[0011] Furthermore, the supercharging pile equipped with a fire extinguishing device for new energy vehicles also includes an audible and visual alarm, which sounds when the fire extinguisher is disengaged from the fire extinguisher locking assembly.

[0012] Furthermore, the supercharging pile with a fire extinguishing device for new energy vehicles also includes an immersion liquid replenishment tank, which is located inside the supercharging pile body and is connected to the immersion liquid storage tank to replenish the liquid medium to the immersion liquid storage tank.

[0013] Furthermore, the immersion liquid replenishment tank is connected to the immersion liquid storage tank via a connecting pipe, with the inlet and outlet ends of the connecting pipe respectively connected to the bottom of the immersion liquid replenishment tank and the immersion liquid storage tank.

[0014] Furthermore, a one-way valve is provided in the connecting pipe to prevent the liquid medium from flowing from the immersion liquid storage tank to the immersion liquid replenishment tank.

[0015] Furthermore, the supercharging pile body is provided with heat dissipation holes, which are directly opposite the electrical module.

[0016] The technical solution of this utility model can achieve at least one of the following effects:

[0017] (1) The supercharging pile with fire extinguishing device for new energy vehicles described in this utility model includes a fire extinguishing gun, an immersion liquid storage tank and a supercharging pile body. The immersion liquid storage tank stores liquid media for heat dissipation and fire extinguishing. The supercharging pile body serves as an integrated carrier, housing the immersion liquid storage tank, liquid booster pump and fire extinguishing gun within the supercharging pile body, avoiding additional equipment occupying external space. Thus, hardware sharing and space sharing between the heat dissipation system and the fire extinguishing system are realized. The reuse of liquid media in the two scenarios eliminates coordination conflicts between systems, improves the utilization rate of internal space of the supercharging pile, and can accommodate more charging units in the same area, effectively saving space.

[0018] (2) The supercharging pile with fire extinguishing device for new energy vehicles described in this utility model has a immersion liquid storage tank connected to a circulation pump to realize the circulation flow of liquid medium. The inlet and outlet of the circulation pump are connected to the two ends of the immersion liquid storage tank through pipes to form a closed loop. The operation of the circulation pump makes the liquid medium form a directional flow inside the storage tank, which not only accelerates the heat exchange process, but also maintains the dynamic pressure reserve of the liquid medium.

[0019] (3) The supercharging pile with fire extinguishing device for new energy vehicles described in this utility model also includes an immersion liquid replenishment tank. By replenishing the lost liquid medium in a timely manner, it is ensured that there is always enough liquid in the immersion liquid storage tank for heat dissipation and fire extinguishing, thereby improving the stability and safety of the entire supercharging pile system.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0022] Figure 1 This is a schematic diagram of the structure of a supercharging pile with a fire extinguishing device for new energy vehicles in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the fire extinguisher locking assembly in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the immersion liquid storage tank in an embodiment of this utility model;

[0025] Figure 4This is a schematic diagram of the structure of the immersion liquid replenishment tank in an embodiment of this utility model.

[0026] Figure label:

[0027] 1-Fire extinguisher, 2-Fire extinguisher holder, 3-Electrical module, 4-Charging gun holder, 5-Charging gun, 6-Immersion liquid storage tank, 61-Heat dissipation fins, 62-Circulation pump, 7-Liquid booster pump, 8-Fire extinguisher locking assembly, 8a-Pressure trigger switch, 8b-Relay, 9-Overcharge pile body, 10-Immersion liquid replenishment tank, 11-Connecting pipe. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0029] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0030] Example 1

[0031] like Figure 1 As shown, Embodiment 1 of this utility model provides a supercharging pile with a fire extinguishing device for new energy vehicles, including a fire extinguishing gun 1, an electrical module 3, an immersion liquid storage tank 6, a liquid booster pump 7, and a supercharging pile body 9. The fire extinguishing gun 1 is hung on the supercharging pile body 9. The immersion liquid storage tank 6 is located inside the supercharging pile body 9 and stores a liquid medium for heat dissipation and fire extinguishing. The electrical module 3 is immersed in the immersion liquid storage tank 6 and is used to control the charging process. The liquid booster pump 7 is connected between the immersion liquid storage tank 6 and the fire extinguishing gun 1 to pump the liquid medium to the fire extinguishing gun 1 for fire extinguishing.

[0032] The immersion liquid storage tank 6 is a container for storing liquid media. For example, the immersion liquid storage tank 6 can be made of stainless steel or corrosion-resistant composite materials, and its volume should be larger than the outer contour dimensions of the electrical module 3. The immersion liquid storage tank 6 physically isolates the liquid media within a predetermined area, achieving both continuous cooling of the electrical module 3 and serving as a reserve for fire extinguishing media. The liquid media can be a supramolecular halogenated hydrocarbon immersion liquid, but is not limited to this; other existing liquids with both cooling and fire extinguishing functions can also be used. The liquid booster pump 7 refers to the pump used to establish the liquid delivery system. The power device for delivering pressure, exemplarily, can be a centrifugal pump or a plunger pump. Its inlet end is connected to the bottom of the immersion liquid storage tank 6, and its outlet end is connected to the fire extinguishing gun 1 via a pressure-resistant pipeline. The liquid booster pump 7 rapidly increases the medium flow rate in a fire extinguishing scenario, ensuring that the spray pressure of the fire extinguishing gun 1 meets the fire extinguishing requirements. The fire extinguishing gun 1 refers to a handheld liquid spraying device. For example, the fire extinguishing gun 1 is a metal spray gun with a trigger control valve. Its body has a quick-connect interface for connection to the booster pump pipeline 7. In non-fire extinguishing conditions, this device is fixed to the supercharging pile body 9, avoiding the space constraints caused by separate storage. Wasteful; Electrical module 3 can use electrical modules from BYD's megawatt flash charging supercharging piles or TELD's TZD-HL-600 supercharging piles; During charging, the heat generated by electrical module 3 is absorbed by the surrounding liquid medium, which transfers the heat to the wall of the immersion liquid storage tank through natural convection or forced circulation. In case of fire, the operator removes the fire extinguisher 1 and starts the liquid booster pump 7. The liquid medium in the immersion liquid storage tank 6 is pressurized by the pump and sprayed onto the fire source of the new energy vehicle through the fire extinguisher 1. The same liquid medium serves as a cooling medium during the heat dissipation stage and in the extinguishing stage... During the fire stage, the supercharging pile acts as a fire extinguishing agent, and its two functions are achieved through pipeline switching. The supercharging pile body 9 serves as an integrated carrier, housing the immersion liquid storage tank 6, the liquid booster pump 7, and the fire extinguishing gun 1, thus avoiding additional equipment occupying external space. In this embodiment of the invention, the heat dissipation system and the fire extinguishing system share hardware and space. The reuse of the liquid medium in the two scenarios eliminates coordination conflicts between the systems, improves the utilization rate of the internal space of the supercharging pile, and can accommodate more charging units in the same area, effectively saving space and solving the technical problems existing in the prior art.

[0033] An optional solution of this utility model embodiment is as follows: Figure 1 As shown, the supercharging pile with a fire extinguishing device for new energy vehicles also includes a charging gun holder 4 and a charging gun 5. The charging gun 5 is connected to the electrical module 3 and can be hung on the charging gun holder 4.

[0034] The charging gun holder 4 is used to fix and store the charging gun 5, ensuring the safe storage of the charging gun 5 when not in use and preventing the charging gun 5 from being lost or damaged. The charging gun holder 4 can be fixed on the side wall of the supercharging pile body 9, making it easy to hang and retrieve the charging gun 5. The charging gun 5 is used to connect the new energy vehicle and the supercharging pile to realize the transmission of electrical energy. The charging gun 5 is connected to the electrical module 3, and the charging process is controlled by the electrical module 3.

[0035] An optional solution of this utility model embodiment is as follows: Figure 1 and Figure 2 As shown, the supercharging pile with a fire extinguishing device for new energy vehicles also includes a fire extinguishing gun locking assembly 8. The fire extinguishing gun locking assembly 8 is installed on the fire extinguishing gun seat 2 of the supercharging pile body 9. The fire extinguishing gun 1 is hung on the fire extinguishing gun locking assembly 8. When the fire extinguishing gun 1 is hung on the fire extinguishing gun locking assembly 8, the fire extinguishing gun locking assembly 8 disconnects the power supply of the liquid booster pump 7. When the fire extinguishing gun 1 is detached from the fire extinguishing gun locking assembly 8, the fire extinguishing gun locking assembly 8 connects the power supply of the liquid booster pump 7.

[0036] The fire extinguisher locking assembly 8 is a device that links mechanical structure with electrical control. When the fire extinguisher 1 is attached, a mechanical pressure signal is triggered, cutting off the power supply circuit of the booster pump. Disconnecting the power supply to the liquid booster pump 7 means stopping the liquid booster pump 7 by cutting off the power supply line, and reconnecting the power supply to the liquid booster pump 7 means starting the liquid booster pump 7 by restoring the power supply line. When the fire extinguisher 1 is attached to the fire extinguisher locking assembly 8, the pressure trigger switch is pressed due to mechanical contact. At this time, the booster pump is in a de-energized state, and the liquid medium cannot be pumped. When the fire extinguisher 1 is removed, the pressure trigger switch loses its pressure. Upon resetting, the liquid booster pump 7 starts and delivers the liquid medium to the fire extinguisher 1. This linkage mechanism directly controls the electrical circuit through the physical connection state, ensuring that the booster pump only starts when the fire extinguisher is actually in use. This effectively prevents the fire extinguishing device from being accidentally started when not in use, avoiding unnecessary consumption of the liquid medium and energy waste caused by the ineffective operation of the liquid booster pump 7. At the same time, the mechanical and electrical linkage control method eliminates the delay of manual operation, ensuring that the liquid booster pump 7 is triggered to work the moment the fire extinguisher 1 is released from the locking component, achieving immediate supply of fire extinguishing medium in emergency situations.

[0037] Based on this, such as Figure 2 As shown, the fire extinguisher locking assembly 8 includes a pressure trigger switch 8a and a relay 8b. The pressure trigger switch 8a is abutted against the fire extinguisher 1, and the relay 8b is connected to the pressure trigger switch 8a to control the opening and closing of the liquid booster pump 7.

[0038] The pressure-triggered switch 8a is a triggering device that changes the circuit's on / off state through mechanical contact. For example, the pressure-triggered switch 8a can be implemented using a microswitch with a spring-reset structure. When the fire extinguisher 1 is mounted, it is triggered to open under pressure; when the fire extinguisher 1 is removed, it returns to the on / off state. The relay 8b is an electromagnetic switch device that controls the on / off state of the main circuit through an electrical signal. For example, a normally closed relay can be used. When the pressure-triggered switch 8a is open, the relay 8b cuts off the power to the liquid booster pump 7; when the pressure-triggered switch 8a is on, the relay 8b returns to the power supply state. When the fire extinguisher 1 is mounted on the locking assembly, the body of the fire extinguisher 1 applies continuous pressure to the pressure-triggered switch 8a, causing the contacts of the pressure-triggered switch 8a to be in the open state. At this time, the relay 8b receives the disconnection signal and... The power supply circuit of the liquid booster pump 7 is cut off. When the fire extinguisher 1 is removed, the mechanical pressure of the pressure trigger switch 8a is released, and its internal spring resets, causing the contacts to close automatically. After receiving the conduction signal, the relay 8b immediately connects the power supply of the liquid booster pump 7. During this process, the mechanical contact state of the pressure trigger switch 8a is directly converted into an electrical signal change. The relay 8b realizes a rapid response to power on / off, avoiding delays or misjudgments that may occur in the signal processing of electronic sensors. Thus, in this embodiment of the utility model, the power supply of the booster pump is instantly turned on when the fire extinguisher 1 is removed from the locking assembly, while ensuring that the power supply is automatically cut off after the fire extinguisher 1 is returned to its position. This solves the problem of false triggering caused by signal delay or environmental interference of traditional electronic sensors, and improves the matching accuracy between the operating state of the fire extinguishing device and the equipment access state.

[0039] An optional solution of this utility model embodiment is as follows: Figure 3 As shown, the immersion liquid storage tank 6 is provided with heat dissipation fins 61 to increase the heat dissipation area.

[0040] The heat dissipation fins 61 are sheet-like structures fixed to the outer surface of the immersion liquid storage tank 6. Specifically, they can be made of metal and welded or bonded to the outer wall of the immersion liquid storage tank 61. The heat dissipation fins 61 are used to accelerate the conduction of heat to the external environment by expanding the surface area. This structure acts directly on the immersion liquid storage tank 61, eliminating the need for additional independent heat dissipation devices, thereby reducing system complexity and space occupation.

[0041] An optional solution of this utility model embodiment is as follows: Figure 3 As shown, the immersion liquid storage tank 6 is connected to a circulation pump 62 to achieve the circulation of the liquid medium.

[0042] The circulating pump 62 is used to drive the liquid medium to circulate. For example, the circulating pump 62 can be implemented by a centrifugal pump or a gear pump. Its inlet and outlet are connected to the two ends of the immersion liquid storage tank 61 through pipes to form a closed loop. The operation of the circulating pump 62 causes the liquid medium to form a directional flow inside the storage tank, which not only accelerates the heat exchange process, but also maintains the dynamic pressure reserve of the liquid medium.

[0043] As an improvement, the inlet of the circulating pump 62 is connected to the bottom area of ​​the immersion liquid storage tank 61, and the outlet is connected to the top area of ​​the immersion liquid storage tank 61. When the circulating pump is started, the liquid medium is drawn from the bottom and pressurized and transported to the top, forming a forced circulation flow from top to bottom. This flow mode enhances the convective heat transfer efficiency between the liquid and the surface of the electrical module 3 immersed in it, while avoiding local temperature accumulation. In the fire extinguishing scenario, the continuous pressure provided by the circulating pump 62 can be directly and quickly established through the liquid booster pump 7 to establish the spray pressure required for fire extinguishing. It can also act as a pressurization device. The forced circulation flow of the liquid medium increases the heat exchange rate and reduces the operating temperature of the electrical module 3. At the same time, the dynamic pressure base established by the circulating pump 62 shortens the delivery response time of the fire extinguishing medium.

[0044] In one optional embodiment of this utility model, the supercharging pile with a fire extinguishing device for new energy vehicles also includes an audible and visual alarm. When the fire extinguishing gun 1 is disengaged from the fire extinguishing gun locking assembly 8, the audible and visual alarm will sound.

[0045] The audible and visual alarm is used to provide warnings through sound and light signals. For example, the audible and visual alarm can be implemented by combining a buzzer with an LED light. Its alarm triggering logic is directly related to the disengagement state of the fire extinguisher locking component 8. The audible and visual alarm can be activated synchronously when the fire extinguisher is disengaged.

[0046] In one optional embodiment of this utility model, the supercharging pile body 9 is provided with a heat dissipation through hole, which is directly opposite the electrical module 3.

[0047] The heat dissipation holes on the supercharging pile body 9 can promote air circulation and further improve the heat dissipation efficiency of the electrical module 3, ensuring that the electrical module 3 will not overheat when operating under high load. This not only enhances the stability of the system and optimizes the charging performance, but also improves the safety of the supercharging pile.

[0048] Example 2

[0049] Embodiment 2 of this utility model is a further improvement on Embodiment 1 to the supercharging pile with a fire extinguishing device for new energy vehicles, such as... Figure 4As shown, the supercharging pile with a fire extinguishing device for new energy vehicles also includes an immersion liquid replenishment tank 10. The immersion liquid replenishment tank 10 is installed inside the supercharging pile body 9, and the immersion liquid replenishment tank 10 is connected to the immersion liquid storage tank 6 to replenish the liquid medium to the immersion liquid storage tank 6.

[0050] The submerged liquid replenishment tank 10 refers to a liquid storage unit set up independently of the submerged liquid storage tank 6. Specifically, it can be implemented using a sealed container structure, and its volume can be set to 80%-90% of the capacity of the submerged liquid storage tank 6. The main function of the submerged liquid replenishment tank 10 is to provide replenishing liquid medium to the submerged liquid storage tank 6. During the operation of the supercharger, the liquid medium will gradually decrease due to evaporation, leakage or use. The submerged liquid replenishment tank 10 can replenish these lost liquid media in a timely manner, ensuring that there is always enough liquid in the submerged liquid storage tank 6 for heat dissipation and fire extinguishing, thereby improving the stability and safety of the entire supercharger system.

[0051] An optional solution of this utility model embodiment is as follows: Figure 4 As shown, the immersion liquid replenishment tank 10 is connected to the immersion liquid storage tank 6 through a connecting pipe 11. The inlet and outlet ends of the connecting pipe 11 are respectively connected to the bottom of the immersion liquid replenishment tank 10 and the immersion liquid storage tank 6.

[0052] The connecting pipe 11 refers to the fluid channel connecting the immersion liquid replenishment tank 10 and the immersion liquid storage tank 6. For example, it can be implemented by using a metal or plastic pipe with a smooth inner wall. A sealed connection is formed by a flange structure fixed at both ends to the bottom of the container. The inlet and outlet ends are located at the bottom, which means that the pipe interface is located at the lowest position of the container. For example, it can be achieved by opening a through hole at the bottom of the container and welding a pipe joint. This allows the liquid medium to be completely discharged from the container under the action of gravity.

[0053] An optional solution of this utility model embodiment is as follows: Figure 4 As shown, a one-way valve is provided in the connecting pipe 11 to prevent the liquid medium from flowing from the submerged liquid storage tank 6 to the submerged liquid replenishment tank 10.

[0054] A one-way valve is a valve that allows fluid to flow in only one direction. For example, a one-way valve can be implemented using a one-way ball valve. When liquid flows from the immersion liquid replenishment tank 10 to the immersion liquid storage tank 6, the valve core opens under fluid pressure, allowing the medium to pass through; when the liquid attempts to flow in the opposite direction, the valve core closes under the action of spring force or gravity, blocking the backflow of the medium.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A supercharging pile with a fire extinguishing device for new energy vehicles, characterized in that, The device includes a fire extinguisher (1), an electrical module (3), an immersion liquid storage tank (6), a liquid booster pump (7), and an overcharge pile body (9). The fire extinguisher (1) is mounted on the overcharge pile body (9). The immersion liquid storage tank (6) is located inside the overcharge pile body (9) and stores a liquid medium for heat dissipation and fire extinguishing. The electrical module (3) is immersed in the immersion liquid storage tank (6) to control the charging process. The liquid booster pump (7) is connected between the immersion liquid storage tank (6) and the fire extinguisher (1) to pump the liquid medium to the fire extinguisher (1) for fire extinguishing.

2. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 1, characterized in that, The supercharging pile equipped with a fire extinguishing device for new energy vehicles also includes a fire extinguishing gun locking assembly (8). The fire extinguishing gun locking assembly (8) is installed on the supercharging pile body (9). The fire extinguishing gun (1) is hung on the fire extinguishing gun locking assembly (8). When the fire extinguishing gun (1) is hung on the fire extinguishing gun locking assembly (8), the fire extinguishing gun locking assembly (8) disconnects the power supply of the liquid booster pump (7). When the fire extinguishing gun (1) is detached from the fire extinguishing gun locking assembly (8), the fire extinguishing gun locking assembly (8) connects the power supply of the liquid booster pump (7).

3. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 2, characterized in that, The fire extinguisher locking assembly (8) includes a pressure trigger switch (8a) and a relay (8b). The pressure trigger switch (8a) is abutted against the fire extinguisher (1), and the relay (8b) is connected to the pressure trigger switch (8a) to control the opening and closing of the liquid booster pump (7).

4. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 1, characterized in that, The immersion liquid storage tank (6) is equipped with heat dissipation fins to increase the heat dissipation area.

5. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 1, characterized in that, The immersion liquid storage tank (6) is connected to a circulation pump to realize the circulation of the liquid medium.

6. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 2, characterized in that, The supercharging pile equipped with a fire extinguishing device for new energy vehicles also includes an audible and visual alarm. When the fire extinguisher (1) is disengaged from the fire extinguisher locking assembly (8), the audible and visual alarm will sound.

7. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 1, characterized in that, The supercharging pile with a fire extinguishing device for new energy vehicles also includes an immersion liquid replenishment tank (10), which is located inside the supercharging pile body (9) and is connected to the immersion liquid storage tank (6) to replenish the liquid medium to the immersion liquid storage tank (6).

8. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 7, characterized in that, The immersion liquid replenishment tank (10) is connected to the immersion liquid storage tank (6) through a connecting pipe (11). The inlet and outlet of the connecting pipe (11) are respectively connected to the bottom of the immersion liquid replenishment tank (10) and the immersion liquid storage tank (6).

9. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 8, characterized in that, The connecting pipe (11) is equipped with a check valve to prevent the liquid medium from flowing from the submerged liquid storage tank (6) to the submerged liquid replenishment tank (10).

10. The supercharging pile with a fire extinguishing device for new energy vehicles according to claim 9, characterized in that, The supercharging pile body (9) has heat dissipation holes, which are directly opposite the electrical module (3).

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