Automatic power-off protection device for charging pile

Abstract

The invention discloses a charging pile automatic power-off protection device, and relates to the technical field of charging pile protection devices, the charging pile automatic power-off protection device comprises a support plate, and further comprises a power-off mechanism, an escape mechanism, a fire extinguishing mechanism and a charging pile box, the charging pile box is arranged on the outer side of the support plate, the power-off mechanism is arranged on the outer wall of the support plate, and the power-off mechanism comprises a sliding assembly and an auxiliary assembly; the sliding assembly is arranged on the outer wall of the supporting plate, the auxiliary assembly is arranged on the sliding assembly, and the escape mechanism is arranged on the outer wall of the supporting plate. According to the automatic power-off protection device for the charging pile, second-level automatic power-off and physical isolation of the on-fire charging pile are achieved through the pure mechanical linkage escape mechanism; and dry sand covering type fire extinguishing is triggered by virtue of falling gravitational potential energy, so that high-efficiency fireproof isolation and reliable suffocation fire extinguishing are synchronously completed under the condition that external power is not needed.

Description

Technical Field

[0001] This invention relates to the field of charging pile protection devices, specifically an automatic power-off protection device for charging piles. Background Technology

[0002] Charging stations are critical infrastructure providing power to electric vehicles, typically installed in public parking lots, commercial areas, and highway service areas. They charge electric vehicle batteries via AC or DC power and are a core component supporting the popularization of new energy vehicles and the development of green transportation. The safety and reliability of charging stations are directly related to the safety of users' lives and property, the stable operation of the power grid, and the healthy development of the electric vehicle industry. However, existing charging station systems, especially in fire prevention and fault isolation, still have significant technical shortcomings.

[0003] Many existing charging stations lack automatic and rapid physical isolation designs. When a fire breaks out inside a charging station due to circuit overload, short circuit, or component aging, traditional devices mainly rely on electrical circuit breaker protection to cut off the power supply, but cannot physically separate the burning unit from adjacent equipment or lines. The high temperature, smoke, or flames generated by the fire can easily spread through cable trays, supports, or spaces, causing the fire to expand and affect the entire charging station or surrounding facilities. At the same time, the sustained high temperature at the fault point may ignite plastic components or accumulated dust inside the charging station, increasing the difficulty of firefighting and the risk of secondary explosions. This passive protection mode is difficult to achieve early physical containment of the fire and lacks an active isolation mechanism similar to an "escape mechanism," failing to sink or move the burning unit away from its original position within seconds after power failure, thus failing to create the critical conditions for firefighting.

[0004] Traditional charging stations rely heavily on externally powered alarm systems or sprinkler systems for fire suppression. If a fire causes internal wiring to burn out or the main power supply to be interrupted, these electrically powered firefighting devices may become completely ineffective. While some devices are equipped with portable fire extinguishers, they depend on personnel to detect and operate them, resulting in significant response delays in unattended or nighttime scenarios. More seriously, liquid or gaseous extinguishing agents can pose a risk of electric shock or short circuits in electrical fires, and subsequent cleanup is complex and prone to secondary damage. Current technologies lack passive, inert fire suppression mechanisms like "dry sand covering," making it impossible to achieve automatic, safe, and efficient suffocation fire suppression through purely mechanical structures under power outage and without human intervention. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic power-off protection device for charging piles to solve the problems mentioned in the background art.

[0006] To achieve this objective, the present invention adopts the following technical solution: An automatic power-off protection device for charging piles is provided, including a support plate, a power-off mechanism, an escape mechanism, a fire extinguishing mechanism, and a charging pile box, wherein the charging pile box is located on the outside of the support plate. The power-off mechanism is installed on the outer wall of the support plate. The power-off mechanism includes a sliding component and an auxiliary component. The sliding component is installed on the outer wall of the support plate, and the auxiliary component is installed on the sliding component. The escape mechanism is installed on the outer wall of the support plate. The escape mechanism includes a locking component and a disengaging component. The locking component is installed on the sliding component, and the disengaging component is installed on the outer wall. The fire extinguishing mechanism is located on the component away from the fire extinguishing unit. The fire extinguishing mechanism includes a receiving component, a sand storage component, and a closing component. The receiving component is located on the component away from the fire extinguishing unit, and the sand storage component and the closing component are both located on the receiving component.

[0007] Furthermore: the sliding assembly includes a sliding frame, a first motor, a lead screw, a main slider, a mounting frame, a copper plate, and an insulating plate. The sliding frame is fixedly mounted on the outer wall of the support plate, the first motor is fixedly mounted on the outer wall of the sliding frame, the lead screw is rotatably connected inside the sliding frame, the output end of the first motor is fixedly connected to the side end of the lead screw, the main slider is threadedly connected to the outer surface of the lead screw, the mounting frame is slidably connected inside the sliding frame, the outer wall of the mounting frame is fixedly connected to the outer wall of the main slider, the copper plate is fixedly mounted inside the mounting frame, and the insulating plate is fixedly mounted inside the mounting frame.

[0008] Furthermore: the auxiliary components include a light rod and a secondary slider. The light rod is fixedly installed inside the sliding frame, and the secondary slider is slidably connected to the outer surface of the light rod. The outer wall of the secondary slider is fixedly connected to the outer wall of the mounting frame.

[0009] Furthermore: the components include a lifting frame, a slide rail, and pulleys. The lifting frame is fixedly installed on the outer wall of the support plate, the slide rail is fixedly installed on the outer wall of the lifting frame, and the pulleys are fixedly installed on the outer wall of the charging pile box. The pulleys are slidably connected to the outer surface of the slide rail.

[0010] Furthermore: the locking assembly includes a connecting groove, a connecting plate, a pin, a main socket, and a secondary socket. The connecting groove is opened inside the sliding frame, the connecting plate is slidably connected inside the connecting groove, the outer wall of the connecting plate is fixedly connected to the outer wall of the mounting frame, the pin is fixedly installed on the outer wall of the connecting plate, the main socket is fixedly installed on the top of the charging pile box, the secondary socket is fixedly installed on the top of the lifting frame, and the pin is slidably connected to the inside of the main socket and the secondary socket.

[0011] Furthermore: The receiving assembly includes a fire extinguishing box, two guide rails, a receiving platform, and four springs. The fire extinguishing box is fixedly installed at the bottom of the lifting frame. Each guide rail is fixedly installed inside the fire extinguishing box. The receiving platform is slidably connected to the outer surface of the two guide rails. Each spring is fixedly installed inside the fire extinguishing box, and the other end of each spring is fixedly connected to the bottom of the receiving platform.

[0012] Furthermore: The sand storage assembly includes two mounting platforms, two sand boxes, and two inclined seats. Each mounting platform is fixedly installed on the outer wall of the fire extinguishing box, the two sand boxes are fixedly installed on the top of the two mounting platforms respectively, and the two inclined seats are fixedly installed inside the two sand boxes respectively.

[0013] Furthermore: the closing assembly includes two chutes and two baffles. Each chute is opened on the outer wall of the fire extinguishing box, and each baffle is fixedly installed on the outer wall of the receiving platform. The two baffles are slidably connected to the interior of the two chutes respectively.

[0014] Furthermore, a rubber pad is provided on the top of the receiving platform.

[0015] Furthermore, both sandboxes are equipped with sand filling ports at the top.

[0016] The beneficial effects of this invention are: 1. The escape mechanism of this device is ingeniously designed. Through the pure mechanical linkage of the locking component and the remote component, it achieves rapid and automatic physical isolation of the charging pile unit in fire. Its core working mechanism is as follows: when the fire inside the charging pile box is confirmed, the power-off mechanism activates, simultaneously triggering the locking component. The movement of the mounting frame, via a fixed connecting plate, causes the pins to be pulled out from the main socket on the top of the charging pile box and the auxiliary socket on the top of the lifting frame, thus releasing the charging pile box from its fixed lock. Once the lock is released, the charging pile box, under the influence of gravity, is guided by pulleys and rails on the remote component, rapidly sliding down the lifting frame and actively "escaping" its original installation position. The greatest advantage of this mechanism is that it tightly couples the power-off action and the physical isolation action through a mechanical structure, requiring no additional sensors or power source. It achieves a second-level automatic response from detection to isolation, effectively preventing the fire from spreading to surrounding lines or equipment, creating a crucial prerequisite for subsequent firefighting.

[0017] 2. The fire extinguishing mechanism of this device demonstrates a highly efficient and reliable fire suppression strategy. It consists of a receiving component, a sand storage component, and a closing component, and its activation relies entirely on the gravitational potential energy of the falling charging station box. As the charging station box slides down the escape mechanism, it is received by the receiving platform of the receiving component. The weight of the charging station box overcomes the spring force, pushing the receiving platform down along the guide rail. This downward movement directly triggers the baffle of the closing component to move downward, thereby automatically opening the sand outlet of the sand storage box. The dry sand stored in the sand box is then guided by the inclined seat, flowing out evenly and covering the burning charging station box. The dry sand effectively isolates oxygen and absorbs heat, thus achieving rapid suffocation fire suppression. This passively triggered, mechanically operated fire extinguishing method has extremely high reliability. It does not rely on electricity or complex control systems and can ensure activation even in extreme situations where the main cable burns out and power is lost. Compared to liquid or gas extinguishing systems that require pressure, pumps, and valves, this structure is simpler, has lower maintenance costs, and the dry sand is non-conductive, non-corrosive, easy to clean up after extinguishing a fire, and will not cause secondary damage to equipment or the environment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the charging station box structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the sliding frame structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the connecting plate structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the fire extinguishing box structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the sandbox structure of the present invention.

[0025] In the diagram: 1. Support plate; 2. Charging pile box; 3. Sliding frame; 4. First motor; 5. Lead screw; 6. Main slider; 7. Mounting frame; 8. Copper plate; 9. Insulating plate; 10. Smooth rod; 11. Secondary slider; 12. Connecting groove; 13. Connecting plate; 14. Pin; 15. Main socket; 16. Lifting frame; 17. Secondary socket; 18. Slide rail; 19. Pulley; 20. Fire extinguishing box; 21. Guide rail; 22. Receiving platform; 23. Spring; 24. Slide groove; 25. Baffle; 26. Mounting platform; 27. Sand box; 28. Inclined seat. Detailed Implementation

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions.

[0028] Example 1: The present invention provides a technical solution, such as... Figures 1-6 As shown, an automatic power-off protection device for a charging pile includes a support plate 1, a power-off mechanism, an escape mechanism, a fire extinguishing mechanism, and a charging pile box 2, with the charging pile box 2 located on the outside of the support plate 1. The power-off mechanism is installed on the outer wall of the support plate 1. The power-off mechanism includes a sliding component and an auxiliary component. The sliding component is installed on the outer wall of the support plate 1, and the auxiliary component is installed on the sliding component. The escape mechanism is installed on the outer wall of the support plate 1. The escape mechanism includes a locking component and a disengaging component. The locking component is installed on the sliding component, and the disengaging component is installed on the outer wall. The fire extinguishing mechanism is located on the component away from the fire extinguishing unit. The fire extinguishing mechanism includes a receiving component, a sand storage component, and a closing component. The receiving component is located on the component away from the fire extinguishing unit, and the sand storage component and the closing component are both located on the receiving component.

[0029] like Figures 1-3 As shown, the sliding assembly includes a sliding frame 3, a first motor 4, a lead screw 5, a main slider 6, a mounting frame 7, a copper plate 8, and an insulating plate 9. The sliding frame 3 is fixedly mounted on the outer wall of the support plate 1. The first motor 4 is fixedly mounted on the outer wall of the sliding frame 3. The lead screw 5 is rotatably connected inside the sliding frame 3, and the output end of the first motor 4 is fixedly connected to the side end of the lead screw 5. The main slider 6 is threadedly connected to the outer surface of the lead screw 5. The mounting frame 7 is slidably connected inside the sliding frame 3, and the outer wall of the mounting frame 7 is fixedly connected to the outer wall of the main slider 6. The copper plate 8 is fixedly mounted inside the mounting frame 7, and the insulating plate 9 is fixedly mounted on the mounting frame. Inside 7, the connecting cable of the charging pile box 2 is in contact with the bottom of the copper plate 8, and the external power cable is in contact with the top of the copper plate 8, so that the charging pile box 2 can obtain power. When the charging pile box 2 catches fire accidentally, the sensor inside receives a signal and starts the first motor 4 through the internal controller. When the first motor 4 runs, it drives the lead screw 5 to rotate. When the lead screw 5 rotates, due to the rotation restriction of the mounting frame 7 by the auxiliary component, the mounting frame 7 is moved, thereby moving the copper plate 8 away from the two cables. The insulating plate 9 replaces its position to seal the external cable, and the locking component is unlocked when the mounting frame 7 moves.

[0030] like Figure 3As shown, the auxiliary component includes a light rod 10 and a secondary slider 11. The light rod 10 is fixedly installed inside the sliding frame 3, and the secondary slider 11 is slidably connected to the outer surface of the light rod 10. The outer wall of the secondary slider 11 is fixedly connected to the outer wall of the mounting frame 7. When the mounting frame 7 moves, it will drive the secondary slider 11 to move on the light rod 10. At the same time, the rotation of the mounting frame 7 is limited by the restriction of the secondary slider 11 by the light rod 10.

[0031] like Figures 1-2 As shown, the remote component includes a lifting frame 16, a slide rail 18, and a pulley 19. The lifting frame 16 is fixedly installed on the outer wall of the support plate 1, the slide rail 18 is fixedly installed on the outer wall of the lifting frame 16, and the pulley 19 is fixedly installed on the outer wall of the charging pile box 2. The pulley 19 is slidably connected to the outer surface of the slide rail 18. Through the cooperation of the pulley 19 and the slide rail 18, the charging pile box 2 can slide on the lifting frame 16. When the locking component is unlocked, the charging pile box 2 can fall quickly along the lifting frame 16, quickly move away from the external power source, and slide into the fire extinguishing mechanism.

[0032] like Figures 1-4 As shown, the locking assembly includes a connecting groove 12, a connecting plate 13, a pin 14, a main socket 15, and a secondary socket 17. The connecting groove 12 is formed inside the sliding frame 3. The connecting plate 13 is slidably connected inside the connecting groove 12. The outer wall of the connecting plate 13 is fixedly connected to the outer wall of the mounting frame 7. The pin 14 is fixedly installed on the outer wall of the connecting plate 13. The main socket 15 is fixedly installed on the top of the charging pile box 2. The secondary socket 17 is fixedly installed on the top of the lifting frame 16. The pin 14 is slidably connected to the interior of the main socket 15 and the secondary socket 17. When the mounting frame 7 moves, the pin 14 is moved by the connecting plate 13, thereby pulling the pin 14 out of the main socket 15 and the secondary socket 17, releasing the connection between the main socket 15 and the secondary socket 17, and thus allowing the charging pile box 2 to fall.

[0033] like Figures 1-5 As shown, the receiving assembly includes a fire extinguishing box 20, two guide rails 21, a receiving platform 22, and four springs 23. The fire extinguishing box 20 is fixedly installed at the bottom of the lifting frame 16. Each guide rail 21 is fixedly installed inside the fire extinguishing box 20. The receiving platform 22 is slidably connected to the outer surface of the two guide rails 21. Each spring 23 is fixedly installed inside the fire extinguishing box 20. The other end of each spring 23 is fixedly connected to the bottom of the receiving platform 22. When the charging pile box 2 falls, the receiving platform 22 receives it and, through the weight of the charging pile box 2 itself, drives the receiving platform 22 to overcome the elasticity of the springs 23, causing it to fall along the guide rails 21 and drive the closing assembly to fall, allowing the dry sand inside the sand storage assembly to flow out and cover the charging box to extinguish the fire.

[0034] like Figures 1-6As shown, the sand storage assembly includes two mounting platforms 26, two sand boxes 27, and two inclined seats 28. Each mounting platform 26 is fixedly installed on the outer wall of the fire extinguishing box 20. The two sand boxes 27 are respectively fixedly installed on the top of the two mounting platforms 26. The two inclined seats 28 are respectively fixedly installed inside the two sand boxes 27. Each sand box 27 has a sand outlet on its outer wall. The sand box 27 is used to store dry sand. The inclined seats 28 allow the dry sand inside the sand box 27 to slide out smoothly when the sand outlet is opened.

[0035] like Figure 5 As shown, the closing assembly includes two chutes 24 and two baffles 25. Each chute 24 is opened on the outer wall of the fire extinguishing box 20, and each baffle 25 is fixedly installed on the outer wall of the receiving platform 22. The two baffles 25 are slidably connected to the interior of the two chutes 24 respectively. When the receiving platform 22 descends, it drives the two baffles 25 to descend inside the two chutes 24. After the two baffles 25 descend, they will open the sand outlet of the sand box 27, allowing dry sand to flow into the fire extinguishing box 20. Since the baffles 25 will seal the chutes 24 during the descent, the dry sand will not leak out.

[0036] like Figure 6 As shown, a rubber pad is provided on the top of the receiving platform 22. The rubber pad can cushion the charging pile box 2 when it falls quickly onto the receiving platform 22, thus preventing damage to the charging pile box 2.

[0037] like Figure 6 As shown, both sandboxes 27 are equipped with sand filling ports on their tops, allowing workers to add dry sand into the sandboxes 27.

[0038] The specific working process of this invention is as follows: When a fire occurs inside the charging station box 2 due to a malfunction, its built-in sensor detects the signal and activates the first motor 4 of the power-off mechanism via the controller. The first motor 4 drives the lead screw 5 to rotate, and under the guidance and restraint of the auxiliary component's light rod 10 and secondary slider 11, it moves the mounting frame 7 and its copper plate 8, causing the copper plate 8 to move away from the contact position connecting the external power cable and the charging station box 2 cable. Instead, the circuit is isolated by the insulating plate 9, achieving rapid power-off. At the same time, the movement of the mounting frame 7 drives the pin 14 to be pulled out from the main socket 15 and the secondary socket 17 via the locking component's connecting plate 13, releasing the fixing of the charging station box 2. Subsequently, the escape mechanism is activated, and the charging station box 2, under the action of gravity, slides rapidly down the slide rail 18 away from the component via the pulley 19, falling into the fire extinguishing box 20 of the fire extinguishing mechanism. The falling charging pile box 2 is received by the receiving platform 22 of the receiving component. Its weight overcomes the force of the spring 23 and drives the receiving platform 22 to descend along the guide rail 21. The sinking of the receiving platform 22 further drives the baffle 25 of the closing component to move down in the slide 24, opening the sand outlet of the sand storage box 27 of the sand storage component. The dry sand stored therein is then guided out through the inclined seat 28 to cover the charging pile box 2 for fire extinguishing.

Claims

1. An automatic power-off protection device for a charging pile, comprising a support plate (1), characterized in that: It also includes a power-off mechanism, an escape mechanism, a fire extinguishing mechanism, and a charging pile box (2), which is located on the outside of the support plate (1); The power-off mechanism is set on the outer wall of the support plate (1). The power-off mechanism includes a sliding component and an auxiliary component. The sliding component is set on the outer wall of the support plate (1), and the auxiliary component is set on the sliding component. The escape mechanism is set on the outer wall of the support plate (1). The escape mechanism includes a locking component and a disengaging component. The locking component is set on the sliding component, and the disengaging component is set on the outer wall. The fire extinguishing mechanism is located on the component away from the fire extinguishing unit. The fire extinguishing mechanism includes a receiving component, a sand storage component, and a closing component. The receiving component is located on the component away from the fire extinguishing unit, and the sand storage component and the closing component are both located on the receiving component.

2. The automatic power-off protection device for a charging pile according to claim 1, characterized in that, The sliding assembly includes a sliding frame (3), a first motor (4), a lead screw (5), a main slider (6), a mounting frame (7), a copper plate (8), and an insulating plate (9). The sliding frame (3) is fixedly mounted on the outer wall of the support plate (1). The first motor (4) is fixedly mounted on the outer wall of the sliding frame (3). The lead screw (5) is rotatably connected to the inside of the sliding frame (3). The output end of the first motor (4) is fixedly connected to the side end of the lead screw (5). The main slider (6) is threadedly connected to the outer surface of the lead screw (5). The mounting frame (7) is slidably connected to the inside of the sliding frame (3). The outer wall of the mounting frame (7) is fixedly connected to the outer wall of the main slider (6). The copper plate (8) is fixedly mounted inside the mounting frame (7). The insulating plate (9) is fixedly mounted inside the mounting frame (7).

3. The automatic power-off protection device for a charging pile according to claim 2, characterized in that, The auxiliary components include a light rod (10) and a secondary slider (11). The light rod (10) is fixedly installed inside the sliding frame (3), and the secondary slider (11) is slidably connected to the outer surface of the light rod (10). The outer wall of the secondary slider (11) is fixedly connected to the outer wall of the mounting frame (7).

4. The automatic power-off protection device for a charging pile according to claim 1, characterized in that, The components include a lifting frame (16), a slide rail (18), and a pulley (19). The lifting frame (16) is fixedly installed on the outer wall of the support plate (1), the slide rail (18) is fixedly installed on the outer wall of the lifting frame (16), and the pulley (19) is fixedly installed on the outer wall of the charging pile box (2). The pulley (19) is slidably connected to the outer surface of the slide rail (18).

5. The automatic power-off protection device for a charging pile according to claim 4, characterized in that, The locking assembly includes a connecting groove (12), a connecting plate (13), a pin (14), a main socket (15), and a secondary socket (17). The connecting groove (12) is opened inside the sliding frame (3). The connecting plate (13) is slidably connected inside the connecting groove (12). The outer wall of the connecting plate (13) is fixedly connected to the outer wall of the mounting frame (7). The pin (14) is fixedly installed on the outer wall of the connecting plate (13). The main socket (15) is fixedly installed on the top of the charging pile box (2). The secondary socket (17) is fixedly installed on the top of the lifting frame (16). The pin (14) is slidably connected to the interior of the main socket (15) and the secondary socket (17).

6. The automatic power-off protection device for a charging pile according to claim 4, characterized in that, The receiving assembly includes a fire extinguishing box (20), two guide rails (21), a receiving platform (22), and four springs (23). The fire extinguishing box (20) is fixedly installed at the bottom of the lifting frame (16). Each guide rail (21) is fixedly installed inside the fire extinguishing box (20). The receiving platform (22) is slidably connected to the outer surface of the two guide rails (21). Each spring (23) is fixedly installed inside the fire extinguishing box (20). The other end of each spring (23) is fixedly connected to the bottom of the receiving platform (22).

7. The automatic power-off protection device for a charging pile according to claim 6, characterized in that, The sand storage assembly includes two mounting platforms (26), two sand boxes (27) and two inclined seats (28). Each mounting platform (26) is fixedly installed on the outer wall of the fire extinguishing box (20). The two sand boxes (27) are fixedly installed on the top of the two mounting platforms (26) respectively. The two inclined seats (28) are fixedly installed inside the two sand boxes (27) respectively.

8. The automatic power-off protection device for a charging pile according to claim 6, characterized in that, The closing assembly includes two slides (24) and two baffles (25). Each slide (24) is opened on the outer wall of the fire extinguishing box (20), and each baffle (25) is fixedly installed on the outer wall of the receiving platform (22). The two baffles (25) are slidably connected to the interior of the two slides (24) respectively.

9. The automatic power-off protection device for a charging pile according to claim 6, characterized in that, A rubber pad is provided on the top of the receiving platform (22).

10. The automatic power-off protection device for a charging pile according to claim 7, characterized in that, Both sandboxes (27) are equipped with sand filling ports on their tops.

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