Fireproof charging pile

Abstract

The application discloses a fireproof charging pile and belongs to the technical field of electric vehicle charging equipment. The fireproof charging pile comprises a charging pile, a protective wall, a lifting device and a water supply device. An annular groove is formed in the ground around the charging pile. The protective wall surrounds the charging pile and is arranged in the annular groove in a lifting manner. The lifting device is drivingly connected with the protective wall and is used for driving the protective wall to ascend or descend along the annular groove. A sandwich layer for containing cooling water is arranged in the protective wall. The water supply device is connected with the sandwich layer through a pipeline and is used for injecting water into the sandwich layer. The application aims at solving the problem that the charging pile lacks active fireproof isolation means in the prior art, flame heat radiation is easy to invade the interior and cause equipment damage and secondary accidents, and thus provides the fireproof charging pile.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle charging equipment technology, and in particular to a fireproof charging pile. Background Technology

[0002] Existing charging stations mostly employ passive fire protection measures, such as using flame-retardant materials for the casing or placing fire extinguishers on the outside of the station. These methods cannot actively isolate the heat source in the event of a fire. The high-temperature heat radiation generated by the flames can easily penetrate into the equipment through the charging station's casing, heat dissipation holes, and other channels, causing damage to internal electronic components and even triggering secondary accidents such as the spread of fire, resulting in insufficient safety. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that existing charging piles lack active fire protection and isolation measures, and that flame heat radiation can easily penetrate the interior, causing equipment damage and secondary accidents. Therefore, a fireproof charging pile is proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A fireproof charging pile includes a charging pile, a protective wall, a lifting device, and a water supply device. An annular groove is formed in the ground around the charging pile. The protective wall surrounds the charging pile and is installed in the annular groove in a way that allows it to be raised and lowered. The lifting device is driven to the protective wall to drive the protective wall to rise or fall along the annular groove. The protective wall has an inner layer for containing cooling water. The water supply device is connected to the inner layer through a pipe to inject water into the inner layer.

[0005] In some embodiments, a connecting platform extends outward from the bottom of the protective wall, and a screw hole is provided on the connecting platform along the moving direction of the protective wall; a mounting platform extends inward from the top edge of the annular groove; the lifting device includes a first motor and a screw rod, the first motor is fixed to the bottom of the annular groove, the screw rod is arranged vertically, its upper end is rotatably connected to the mounting platform, its lower end is connected to the output shaft of the first motor, the screw rod passes through the screw hole and engages with the thread of the screw hole; the first motor drives the screw rod to rotate, thereby driving the protective wall to rise and fall.

[0006] In some embodiments, a partition is provided in the interlayer of the protective wall, which divides the interlayer into an inner chamber close to the charging pile and an outer chamber away from the charging pile. A connecting hole is provided at the bottom of the partition to connect the inner chamber and the outer chamber. A water supply hole is provided at the bottom of the inner chamber, and a water supply device is connected to the water supply hole through a pipe.

[0007] In some embodiments, a water level detection device disposed in the interlayer is also included. The water level detection device is electrically connected to the control terminal of the water supply device and is used to detect the water level height in the interlayer and control the start and stop of the water supply device.

[0008] In some embodiments, a mounting base is fixed to the top of the interlayer; the water level detection device includes a guide column, a sleeve, a trigger switch, and a float; the guide column is vertically fixed to the bottom of the mounting base; the sleeve is slidably fitted onto the guide column; the float is fixed to the bottom of the sleeve and rises and falls with the water level; the trigger switch is fixed to the bottom of the guide column, and when the water level rises, it lifts the float, causing the sleeve to rise to abut against the trigger switch, the trigger switch sends a signal to shut off the water supply device; when the water level falls, the float drives the sleeve to fall and disengage from the trigger switch, the trigger switch sends a signal to turn on the water supply device.

[0009] In some embodiments, the trigger switch is a normally closed contact switch. When the sleeve abuts against and presses the trigger switch, it cuts off the circuit of the water supply device to stop water supply; when the sleeve is removed, the trigger switch resets and connects the circuit, and the water supply device starts to replenish water.

[0010] In some embodiments, the top of the annular groove is surrounded by a plurality of shielding plates, each shielding plate having one side edge hinged to the ground and the other side edge free. When there is no external force, the shielding plate covers the top opening of the annular groove. When the protective wall rises, its top or side wall pushes against the shielding plate, causing it to flip upward and thus open the top of the annular groove.

[0011] In some embodiments, a debris-blocking device is also included, which includes a drive unit and a plurality of debris-blocking plates; an annular sliding chamber is provided in the side wall near the inner or outer side of the top of the annular groove, and the plurality of debris-blocking plates are circumferentially telescopically disposed in the sliding chamber; the drive unit is used to drive the debris-blocking plates to extend out of the sliding chamber to block the annular groove, or to retract the sliding chamber to open the annular groove.

[0012] In some embodiments, the debris barrier is provided with a plurality of filter holes, and the side edge of the debris barrier along the telescopic direction is provided with a toothed plate; the drive unit includes a second motor and a gear, the second motor is fixed in the sliding chamber, the gear is connected to the output end of the second motor and meshes with the toothed plate, and the debris barrier is driven to translate by the rotation of the gear.

[0013] In some embodiments, the water supply device is located underground and includes a water storage tank, a water pump, and a pipe retraction device; the pipe retraction device is located at the bottom of the annular groove and is used to retract and deploy the pipe; one end of the pipe is connected to the water storage tank via the water pump, and the other end is connected to the water supply hole of the interlayer.

[0014] Compared with the prior art, the present invention provides a fireproof charging pile, which has the following beneficial effects.

[0015] 1. The present invention provides a fireproof charging pile, which is equipped with a liftable protective wall and filled with water in its internal interlayer. When a fire occurs, the protective wall rises and surrounds the charging pile to form a water-cooled barrier, which actively isolates the flames from high-temperature heat radiation and effectively prevents heat from entering the charging pile and causing equipment damage and secondary accidents. When not in use, the protective wall is stored in an annular groove, which does not occupy ground space and takes into account the convenience of daily use. 2. A fireproof charging pile of the present invention divides the interlayer into inner and outer chambers by a partition and allows cooling water to flow from the inner chamber to the outer chamber through the bottom connecting hole, forming a uniform circulating water film, which enhances the heat insulation and cooling effect; a water level detection device composed of a float plate, a sleeve and a touch switch can monitor the water level of the interlayer in real time, automatically turn on the water supply device to replenish water when the water level drops, and automatically turn off when the preset water level is reached, ensuring that the interlayer is always filled with cooling water and maintaining a continuous and reliable fireproof capability; 3. The fireproof charging pile of the present invention, through the cooperation of the shielding plate hinged at the top of the annular groove and the retractable dirt-blocking device, the shielding plate covers the groove opening when the protective wall is stored to prevent rainwater and debris from falling into the groove; after the protective wall is raised, the dirt-blocking plate extends out to block the opening, preventing external objects from falling into the annular groove and obstructing the normal descent of the protective wall, thus ensuring the long-term reliability of the lifting mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the normal state of the present invention.

[0017] Figure 2 For the appendix Figure 1 Internal section Figure 1 .

[0018] Figure 3 For the appendix Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 For the appendix Figure 1 Internal section Figure 2 .

[0020] Figure 5 For the appendix Figure 4 Enlarged view of section B in the middle.

[0021] Figure 6 For the appendix Figure 4 Enlarged view of point C.

[0022] Figure 7 For the appendix Figure 1 Internal section Figure 3 .

[0023] Figure 8 For the appendix Figure 7 Enlarged view of point D in the middle.

[0024] Figure 9 For the appendix Figure 1 Internal section Figure 4 .

[0025] Figure 10 For the appendix Figure 9 Enlarged view of point E in the middle.

[0026] Figure 11 This is a schematic diagram of the protective state of the present invention.

[0027] Figure 12 For the appendix Figure 11 Internal section Figure 5 .

[0028] Figure 13 For the appendix Figure 11 Internal section Figure 6 .

[0029] Figure 14 For the appendix Figure 13 Enlarged view of point F in the middle.

[0030] Figure 15 For the appendix Figure 11 Internal section Figure 7 .

[0031] In the picture: 1-Ground, 101-Base, 102-Annular groove, 103-Card slot, 104-Sliding chamber, 105-Placement groove, 106-Drainage groove, 2-Charging pile, 201-Top plate, 3-Protective wall, 301-Outer chamber, 302-Inner chamber, 303-Connecting hole, 304-Water supply hole, 305-Mounting platform, 306-Mounting seat, 307-Guide column, 308-Sleeve, 309-Sliding hole, 310-Floating plate, 401-First motor, 402-Screw, 403-Rotating seat, 501-Pipeline retraction device, 502-Pipeline, 6-Shielding plate, 7-Pollution barrier plate, 701-Filter hole, 702-Gear plate, 8-Drive unit, 801-Second motor, 802-Gear. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Reference Figure 1-15The present invention provides a fireproof charging pile, the core concept of which is to set an annular groove 102 around the ground 1 of the charging pile 2, and to install a liftable annular protective wall 3 in the groove. The protective wall 3 forms a sandwich layer that can be filled with cooling water. When a fire occurs, the protective wall 3 is driven by a lifting device to rise above the ground 1, forming a physical barrier around the charging pile 2. At the same time, a water supply device injects cooling water into the sandwich layer, forming an active water-cooled heat insulation layer, which isolates the conduction path of flames and high-temperature heat radiation to the interior of the charging pile 2 from the source, effectively preventing the equipment from being damaged by heat or causing secondary accidents. Under normal daily use without fire, the protective wall 3 is completely stored in the annular groove 102 below the ground 1, and the groove opening is protected by multiple layers of shielding plate 6 and dirt blocking device to ensure that the lifting mechanism remains smooth and reliable for a long time, without affecting the normal use of the charging pile 2 and the site space.

[0034] Specifically, the fireproof charging pile mainly consists of the charging pile body 2, the protective wall 3, the lifting device, and the water supply device. The charging pile body 2 is used to provide charging services for electric vehicles and is fixedly installed on the ground 1. A ring-shaped groove 102 is excavated around the charging pile 2 in the ground 1. The ring-shaped groove 102 is arranged in a rectangular or circular shape around the charging pile 2, and the depth and width of the groove are sufficient to accommodate the protective wall 3 and its auxiliary structures. The protective wall 3 is a ring-shaped wall structure adapted to the shape of the ring groove 102. It can be made of welded steel plates or molded from high-temperature resistant composite materials. Its interior is hollow, forming a sandwich for accommodating cooling water. The protective wall 3 can be raised and lowered into the ring groove 102. When not in operation, it is completely submerged in the groove, with its top flush with or slightly below the ground 1, resulting in a neat appearance and not affecting pedestrian and vehicle passage. The lifting device is located in the ring groove 102 and is driven by the protective wall 3 to drive the protective wall 3 to rise above the ground 1 or descend back into the ring groove 102. The water supply device is connected to the interlayer of the protective wall 3 via a flexible pipe 502, responsible for injecting cooling water into the interlayer and maintaining the required water level. In the event of a fire, the protective wall 3 is lifted above ground level 1 by a lifting device, forming a physical barrier surrounding the charging pile 2. At the same time, the water supply device injects cooling water into the interlayer, forming an active water-cooled insulation layer, which fundamentally isolates the conduction path of flames and high-temperature heat radiation to the interior of the charging pile 2, effectively preventing equipment damage or secondary accidents caused by heat attack. Under normal use conditions without fire, the protective wall 3 is completely housed in the annular groove 102 below ground level 1, without affecting the normal use of the charging pile 2 or the available space.

[0035] like Figure 4As shown, in one embodiment, to further enhance the overall structural strength and protective tightness of the device, the fireproof charging pile also includes a base 101 and a top plate 201. The base 101 is located below the charging pile 2 body. The base 101 is made of concrete or steel and is fixedly installed on the ground foundation 1. The charging pile 2 body is securely installed on top of the base 101 using bolts or other fasteners. The base 101 not only bears the entire load of the charging pile 2 but also provides structural support for the inner wall of the annular groove 102. A top plate 201 is also fixedly installed on top of the charging pile 2 body. The top plate 201 is a horizontally arranged plate structure, and its outer contour dimension is larger than the top contour of the charging pile 2 body, causing the edge of the top plate 201 to extend outwards horizontally, exceeding the side wall range of the charging pile 2 body. When the protective wall 3 rises to its highest position under the drive of the lifting device, the top end face of the protective wall 3 abuts against and fits against the lower surface edge area of ​​the top plate 201, so that the annular wall of the protective wall 3 and the top plate 201 together form a relatively closed shielding space, completely covering and shielding the charging pile 2 body inside. Flames and heat radiation need to penetrate the double barrier of the water-cooled protective wall 3 and the top plate 201 to reach the charging pile 2, which greatly improves the tightness of protection.

[0036] like Figure 4-6As shown, in one embodiment, to achieve smooth lifting and reliable positioning of the protective wall 3, a screw drive structure is adopted for the lifting device. A connecting platform extends horizontally outward from the bottom of the protective wall 3. The connecting platform consists of several protruding blocks or a continuous annular flange arranged at intervals along the circumference of the protective wall 3. Each connecting platform has a through-hole vertically formed along the lifting direction of the protective wall 3, and the inner wall of the screw hole is machined with an internal thread that mates with the screw 402. The top edge of the annular groove 102 extends inward to form a mounting platform 305, providing upper rotational support and axial positioning for the screw 402. Specifically, a rotating seat 403 is also provided at the bottom of the annular groove 102 for rotatably mounting the end of the screw 402. The lifting device includes a first motor 401 and a screw 402. The first motor 401 is fixedly mounted on the bottom foundation of the annular groove 102 and protected by a waterproof sealed housing. The screw 402 is arranged vertically within the annular groove 102. Its upper end is rotatably connected to the lower surface of the mounting platform 305 via a rotating seat 403, and its lower end is connected to the output shaft of the first motor 401 via a coupling. The screw 402 passes through a screw hole on the corresponding connecting platform and forms a precise threaded engagement with the internal thread of the screw hole. When the first motor 401 is powered on, its output shaft drives the screw 402 to rotate around its own axis. Through screw transmission, the rotational motion is converted into linear lifting motion of the connecting platform and the entire protective wall 3 along the axis of the screw 402. This screw drive method has a compact structure, smooth movement, high transmission accuracy, and good self-locking performance when the thread helix angle is less than the equivalent friction angle. It can reliably stop and maintain the protective wall 3 at any height position, and will not fall due to its own weight even if the power is cut off, ensuring safety in use.

[0037] like Figure 10As shown, in one embodiment, to further enhance the thermal protection effect and achieve evaporative heat dissipation, the internal interlayer of the protective wall 3 adopts a compartmentalized design with an open top. A ring-shaped partition is vertically arranged inside the interlayer, and the top and side edges of the partition are sealed and welded to the inner wall of the interlayer, dividing the interlayer into an inner chamber 302 closer to the charging pile 2 and an outer chamber 301 farther from the charging pile 2. Several gaps are left between the bottom of the partition and the bottom surface of the interlayer, forming multiple interconnecting holes 303 distributed circumferentially, so that the inner chamber 302 and the outer chamber 301 are connected to each other only in the bottom area. At least one water supply hole 304 is also provided at the bottom of the inner chamber 302, and a water supply device is sealed to the water supply hole 304 through a pipe 502. When the water supply device supplies water to the interlayer, the cooling water first enters the inner chamber 302. As the water level rises, the water flows evenly from the inside to the outside chamber 301 through the connecting hole 303 at the bottom, forming a continuous water circulation path from the inside to the outside. This allows the water in the outer chamber 301, which is closer to the flame, to be heated and then carried to the entire water body through natural convection, while the inner chamber 302 maintains a relatively low temperature, creating an effective cooling barrier effect on the inner wall. Simultaneously, the top of the interlayer of the protective wall 3 is an open structure, not sealed, and directly connected to the atmosphere. Even when the top of the protective wall 3 is in contact with the top plate 201, the opening at the top of the interlayer remains unobstructed. When the cooling water in the interlayer absorbs a large amount of heat and boils and evaporates, the water vapor can freely escape from the opening at the top of the interlayer, efficiently dissipating heat to the outside atmosphere using the latent heat of vaporization of water. This prevents excessive pressure inside the interlayer and maintains the evaporative cooling effect, extending the effective working time of the protective wall 3 under continuous fire conditions.

[0038] like Figure 5As shown, in one embodiment, to achieve automatic detection and precise control of the interlayer water level, a water level detection device is also provided inside the interlayer of the protective wall 3. A mounting base 306 is fixed to the top of the interlayer, and the water level detection device is mounted on this mounting base 306. It consists of a guide post 307, a sleeve 308, a touch switch, and a float 310. The guide post 307 is a cylindrical metal rod, with its top end vertically fixed to the bottom of the mounting base 306 and its bottom end extending into the interlayer. The sleeve 308 is a hollow tubular structure with a cylindrical sliding hole 309 opened along its axis inside. The sleeve 308 slides onto the outer periphery of the guide post 307 through the sliding hole 309, with a clearance fit between them, ensuring smooth sliding and a certain degree of guiding accuracy. To prevent the guide post 307 from accidentally detaching from the sleeve 308 during sliding, a first retaining ring is provided inwardly at the opening of the sleeve 308 near the mounting base 306. The inner diameter of the first retaining ring is larger than the outer diameter of the guide post 307 but smaller than the outer diameter of its lower structure. Simultaneously, a second retaining ring is provided outwardly at the end of the guide post 307 near the float 310. The outer diameter of the second retaining ring is larger than the inner diameter of the first retaining ring. When the sleeve 308 slides downward along the guide post 307 to its limit position, the upper end face of the second retaining ring abuts against the lower end face of the first retaining ring, forming a mechanical limit, thereby effectively preventing the guide post 307 from completely slipping out of the sliding hole 309 of the sleeve 308, ensuring the structural reliability of the detection device and its stability for long-term repeated use. The float 310 is made of a high-temperature resistant lightweight material and is fixedly connected to the bottom of the sleeve 308, allowing it to float up and down with changes in the water level within the interlayer. The trigger switch is fixedly installed at the bottom or side of the guide column 307, with its control contacts facing the contact surface of the sleeve 308, and is electrically connected to the control circuit of the water supply device via a waterproof wire. The specific working process is as follows: When the water level in the interlayer rises, the float 310 is lifted upwards by the buoyancy of the water, causing the sleeve 308 to move upwards synchronously along the guide column 307; when the water level reaches the preset maximum control level, the top end face or side protrusion of the sleeve 308 contacts the contact of the trigger switch and applies pressure, triggering the trigger switch to output a signal to shut off the water supply device; when the water level in the interlayer gradually decreases due to evaporation or minor leakage, the float 310 falls with the water surface, and the sleeve 308 slides downwards along the guide column 307 under the combined action of its own weight and the weight of the float 310. The top of the sleeve 308 disengages from the contact of the trigger switch, the trigger switch resets and outputs a signal to start the water supply device, and the water pump restarts to replenish water. Preferably, the trigger switch is a normally closed contact type micro switch. When the sleeve 308 presses the switch contact, its internal normally closed contact opens, cutting off the power supply circuit of the water pump motor or solenoid valve in the water supply device, and the water pump stops working. When the sleeve 308 is removed, the internal contact of the switch returns to the normally closed state under the action of the reset spring, the circuit is reconnected, and the water pump starts to replenish water.

[0039] like Figure 1 and11 As shown, in one embodiment, to protect the mechanism within the annular groove 102 and prevent foreign objects from falling in, multiple shielding plates 6 are arranged around the top opening of the annular groove 102. Each shielding plate 6 is a long rectangular or fan-shaped plate, with one long edge hinged to the ground 1 around the annular groove 102 via a corrosion-resistant metal hinge, and the other long edge is a free end. Preferably, a torsion spring or other reset element can be provided at the hinge mounting point, or the center of gravity of the shielding plate 6 can be designed to maintain a covering posture when it is in a free state. In the non-working state where the protective wall 3 is completely housed within the annular groove 102, all shielding plates 6 are in a horizontal or slightly tilted state under the action of the spring force of the reset element or their own weight, and the free ends of adjacent shielding plates 6 are close to or overlap each other, together basically completely covering the top opening of the annular groove 102, forming an effective ground barrier 1 that can prevent rainwater, fallen leaves, dust, etc. from falling into the interior of the annular groove 102. When the protective wall 3 is driven to rise by the lifting device, the top outer edge or outer wall surface of the protective wall 3 directly contacts and pushes upward against the lower surface of the shielding plate 6 during the rising process, forcing the shielding plate 6 to flip upward around the hinge axis and open, making room for the rising channel of the protective wall 3, so that it can rise smoothly and unobstructed to above the ground 1.

[0040] like Figure 7 and 8As shown, in one embodiment, to further prevent foreign objects from falling into the annular groove 102 after the protective wall 3 is raised, an active debris-blocking device is also provided. A rectangular annular sliding chamber 104 is formed circumferentially on the side wall near the inner or outer side of the top of the annular groove 102, with the opening of the sliding chamber 104 facing the center of the annular groove 102. Multiple debris-blocking plates 7 are arranged sequentially circumferentially and retractably housed within the sliding chamber 104. One end of the debris-blocking plate 7 facing the center of the annular groove 102 is a freely retractable end, while the other end remains within the guide groove of the sliding chamber 104. To facilitate the smooth extension and retraction of the debris-blocking plates 7, continuous toothed plate 702 structures are machined on both sides of the debris-blocking plates 7 along the extension direction. A placement groove 105 is also provided within the sliding chamber 104 corresponding to the position of the toothed plate 702. The placement groove 105 is an independent space recessed inward from the side wall of the sliding chamber 104, used to accommodate the drive unit 8 assembly that drives the toothed plate 702. The drive unit 8 includes a drive motor and a gear 802. The drive motor is a miniature waterproof motor, fixedly installed on the bottom or side wall of the placement groove 105. The gear 802 is fixed to the output shaft of the drive motor by a key connection or set screws, and maintains constant meshing with the toothed plate 702 on the side of the debris barrier 7. Since the drive motor and gear 802 are embedded in the placement groove 105, their outer contours do not protrude from the main cavity of the sliding chamber 104, thus completely avoiding interference with the extension and retraction trajectory of the debris barrier 7. When the protective wall 3 descends and retracts into the annular groove 102, the drive motor rotates forward, and through the meshing transmission of the gear 802 and the toothed plate 702, it drives the debris barrier 7 to extend smoothly from the sliding chamber 104. The free end of the debris barrier 7 crosses the opening area of ​​the annular groove 102, so that multiple debris barriers 7 together form a grid-like shielding surface. To complement this, a ring of slots 103 is provided on the side wall of the top of the base 101, corresponding to the opening of the sliding chamber 104 and the extension position of the baffle plate 7. When the baffle plate 7 extends to its maximum stroke, its free end edge fits precisely into the slot 103, forming end support and positioning, significantly enhancing the load-bearing capacity and deformation resistance of the baffle plate 7 in the extended state. Multiple rows of filter holes 701 are also evenly distributed on the surface of the baffle plate 7. During rainy weather, rainwater falling on the baffle plate 7 can smoothly drain into the bottom of the annular groove 102 through the filter holes 701. Simultaneously, the size design of the filter holes 701 is sufficient to intercept large debris that could cause the mechanism to jam. When it is necessary to raise the protective wall 3, the drive motor reverses, and the baffle plate 7 first retracts into the sliding chamber 104, its free end disengaging from the slot 103 and completely retracting into the chamber, freeing up the entire space of the annular groove 102 and ensuring that the upward path of the protective wall 3 is unobstructed.

[0041] like Figure 15As shown, in one embodiment, to ensure the dryness inside the annular groove 102 and the smooth operation of the pipes, a drainage groove 106 and a pipe handling device 501 are also provided. The bottom of the annular groove 102 is provided with a drainage groove 106, which is opened along the low-lying area at the bottom of the annular groove 102 or around its circumference, and is connected to the building drainage system or a dedicated drainage pipe. This is used to promptly drain any small amount of water that enters the annular groove 102 through gaps due to rainfall or cleaning, preventing long-term dampness inside the groove from causing corrosion of metal parts or damage to electrical components.

[0042] Specifically, the water supply system is entirely underground, including a water tank, a water pump, and a pipe winding / unwinding device 501. The pipe winding / unwinding device 501 is installed at a suitable position at the bottom of the annular groove 102. It should be noted that the pipe winding / unwinding device 501 is a commonly used device for winding and unwinding pipes 502, and its core components include a drum, a coil spring, and a guide pulley system. One end of the flexible pipe 502 is wound around the drum, and the other end, after being redirected by the guide pulley system, connects to the water supply hole 304 of the inner chamber 302. When the protective wall 3 changes position during lifting and lowering, the pipe winding / unwinding device 501 synchronously rotates to wind or unwind the pipe 502, ensuring that the pipe 502 is always under appropriate tension, thus guaranteeing the long-term safe and stable operation of the water supply pipeline.

[0043] The fireproof charging pile provided by this invention has the following working principle: Under normal fire-free conditions, the protective wall 3 is housed within the annular groove 102, the shielding plate 6 horizontally covers the groove opening, and the debris-blocking plate 7 extends out of the sliding chamber 104. The charging pile 2 appears clean, and the ground space 1 is unaffected. When a fire or abnormally high temperature is detected, the control system first activates the second motor 801 of the debris-blocking device. The debris-blocking plate 7 retracts into the sliding chamber 104 and opens the opening of the annular groove 102. Then, the first motor 401 is activated, driving the screw 402 to rotate. The protective wall 3 rises smoothly under the action of the screw drive, pushing the shielding plate 6 upward and extending it from the annular groove 102 to a predetermined height. During this process, the pipe deployment device 501 simultaneously releases the pipe 502, ensuring that the water supply path remains connected as the protective wall 3 moves. After the protective wall 3 is in place, the water pump of the water supply device starts, injecting cooling water from the storage tank into the inner chamber 302 through pipe 502 and water supply hole 304. The water flows from the bottom of the inner chamber 302 through the connecting hole 303 into the outer chamber 301, quickly filling the interlayer and forming an annular water-cooled barrier. As the water level rises, the float 310 lifts the sleeve 308 upward. When the top of the sleeve 308 presses against the trigger switch, the water pump stops working, and the water level is maintained at the set height. Under fire conditions, if the cooling water evaporates due to heat or a small amount of leakage causes the water level to drop, the float 310 falls, the trigger switch resets, and the water pump automatically starts to replenish water, ensuring that the protective wall 3 is always filled with cooling water, continuously and effectively isolating the flame from high-temperature heat radiation. After the fire is extinguished, the protective wall 3 descends and retracts into the annular groove 102 under the drive of the first motor 401. The second motor 801 of the debris-blocking device operates, and the debris-blocking plate 7 extends to block the opening of the annular groove 102 to prevent foreign objects from falling in. The shielding plate 6 then closes the groove opening again, and the device returns to its initial state.

[0044] Throughout the process, the protective wall 3 actively rises and forms a water-cooled barrier, which not only blocks the direct invasion of heat radiation into the charging pile 2, but also ensures the reliable operation of the device itself through automatic water level control and slot protection, significantly improving the fire safety capability of the charging pile 2.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A fireproof charging pile, comprising a charging pile (2), characterized in that, It also includes a protective wall (3), a lifting device and a water supply device; an annular groove (102) is provided on the ground (1) around the charging pile (2); the protective wall (3) surrounds the charging pile (2) and is installed in the annular groove (102) in a way that can be raised and lowered; the lifting device is driven to the protective wall (3) to drive the protective wall (3) to rise or fall along the annular groove (102); the protective wall (3) is provided with a jacket for accommodating cooling water; the water supply device is connected to the jacket through a pipe (502) to inject water into the jacket.

2. The fireproof charging pile according to claim 1, characterized in that, The bottom of the protective wall (3) extends outward to form a connecting platform, and a screw hole is provided on the connecting platform along the moving direction of the protective wall (3); the top edge of the annular groove (102) extends inward to form a mounting platform (305); the lifting device includes a first motor (401) and a screw (402), the first motor (401) is fixed to the bottom of the annular groove (102), the screw (402) is arranged vertically, its upper end is rotatably connected to the mounting platform (305), and its lower end is connected to the output shaft of the first motor (401), the screw (402) passes through the screw hole and is threaded into the screw hole; the first motor (401) drives the screw (402) to rotate, thereby driving the protective wall (3) to rise and fall.

3. The fireproof charging pile according to claim 1, characterized in that, The protective wall (3) has a partition in its interlayer, which divides the interlayer into an inner chamber (302) close to the charging pile (2) and an outer chamber (301) away from the charging pile (2). The bottom of the partition has a connecting hole (303) that connects the inner chamber (302) and the outer chamber (301). The bottom of the inner chamber (302) has a water supply hole (304), and the water supply device is connected to the water supply hole (304) through a pipe (502).

4. A fireproof charging pile according to claim 3, characterized in that, It also includes a water level detection device installed in the interlayer, which is electrically connected to the control terminal of the water supply device and is used to detect the water level in the interlayer and control the start and stop of the water supply device.

5. A fireproof charging pile according to claim 4, characterized in that, The top of the interlayer is fixed with a mounting base (306); the water level detection device includes a guide column (307), a sleeve (308), a touch switch and a float (310); the guide column (307) is vertically fixed to the bottom of the mounting base (306); the sleeve (308) is slidably sleeved on the guide column (307); the float (310) is fixed to the bottom of the sleeve (308) and rises and falls with the water level; the touch switch is fixed to the bottom of the guide column (307). When the water level rises, it lifts the float (310) and causes the sleeve (308) to rise to abut against the touch switch, at which point the touch switch sends a signal to shut off the water supply device; when the water level falls, the float (310) drives the sleeve (308) to fall and disengage from the touch switch, at which point the touch switch sends a signal to turn on the water supply device.

6. A fireproof charging pile according to claim 5, characterized in that, The trigger switch is a normally closed contact switch. When the sleeve (308) abuts against and presses the trigger switch, it cuts off the circuit of the water supply device to stop water supply. When the sleeve (308) comes off, the trigger switch resets and connects the circuit, and the water supply device starts to replenish water.

7. A fireproof charging pile according to claim 1, characterized in that, The top of the annular groove (102) is surrounded by multiple shielding plates (6). One side edge of each shielding plate (6) is hinged to the ground (1), and the other side edge is a free end. When there is no external force, the shielding plate (6) covers the top opening of the annular groove (102). When the protective wall (3) rises, its top or side wall pushes against the shielding plate (6), causing it to flip upward and thus open the top of the annular groove (102).

8. A fireproof charging pile according to claim 7, characterized in that, It also includes a debris-blocking device, which includes a drive unit (8) and a plurality of debris-blocking plates (7); the top of the annular groove (102) is provided with an annular sliding chamber (104) near the inner or outer side wall, and the plurality of debris-blocking plates (7) are circumferentially telescopically arranged in the sliding chamber (104); the drive unit (8) is used to drive the debris-blocking plates (7) to extend out of the sliding chamber (104) to block the annular groove (102), or to retract the sliding chamber (104) to open the annular groove (102).

9. A fireproof charging pile according to claim 8, characterized in that, The debris barrier (7) is provided with a plurality of filter holes (701), and the debris barrier (7) is provided with toothed plates (702) on the side edge along the extension direction; the drive unit (8) includes a second motor (801) and a gear (802), the second motor (801) is fixed in the sliding chamber (104), and the gear (802) is connected to the output end of the second motor (801) and meshes with the toothed plates (702), and the debris barrier (7) is driven to translate by the rotation of the gear (802).

10. A fireproof charging pile according to claim 4, characterized in that, The water supply device is located underground and includes a water storage tank, a water pump, and a pipe retraction device (501). The pipe retraction device (501) is located at the bottom of the annular groove (102) and is used to retract the pipe (502). One end of the pipe (502) is connected to the water storage tank via the water pump, and the other end is connected to the water supply hole (304) of the interlayer.

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