Charging device with V2G bidirectional charge and discharge function

Abstract

The application belongs to the technical field of charging equipment, especially the charging equipment with V2G bidirectional charging and discharging function, aiming at the problems that the flame on the existing charging equipment is easy to burn the electric vehicle along the charging wire, the explosion of the charging equipment is easy to expand the accident range, and it is difficult to identify whether the charging equipment is occupied when the visibility is insufficient, the following scheme is proposed, which comprises a base, the top of the base is fixed with a protection box body through bolts, the bottom inner wall of the protection box body is welded with a fixed column, the outer wall of the fixed column is slidably sleeved with a charging pile, and the top of the charging pile is fixed with a top plate through bolts, in the application, the screw rod pushes the gasket ring to move, and the charging gun is pulled out of the electric vehicle, so that when the charging equipment catches fire, the flame thereon is prevented from burning the electric vehicle along the charging wire, when the charging pile catches fire, the charging pile is put into the protection box body to isolate the charging pile, and damage to the surrounding vehicles is avoided when the charging pile explodes.

Description

Technical Field

[0001] This invention relates to the field of charging equipment technology, and in particular to a charging equipment with V2G bidirectional charging and discharging function. Background Technology

[0002] The growing global energy crisis and environmental pollution have spurred the rise of electric vehicles (EVs) and led to the development of a low-carbon economy. This has given rise to a technology designed to connect EVs to the power grid: Vehicle-to-Grid (V2G). As a key component of V2G technology enabling bidirectional energy and information flow, research on bidirectional charging and discharging devices has attracted widespread attention. Currently, most charging equipment can achieve bidirectional charging and discharging between EVs and the power grid.

[0003] In existing technologies, charging devices still pose some safety hazards during use:

[0004] 1. In the existing technology, when charging electric vehicles through charging equipment, the charging gun is often inserted into the plug port of the electric vehicle. When the charging equipment malfunctions, short-circuits, or catches fire, the flames on the charging equipment can easily spread along the charging cable and ignite the electric vehicle, causing greater accidents and losses.

[0005] 2. When the charging equipment malfunctions, short-circuits, or catches fire, the charging equipment is prone to explosion, and the debris generated during the explosion can easily scratch nearby electric vehicles and expand the scope of the accident.

[0006] 3. At night or in foggy weather, visibility is poor, making it difficult for electric vehicle owners to identify whether charging facilities are occupied. Owners need to search for them one by one, which wastes a lot of their time.

[0007] To address the aforementioned issues, this invention proposes a charging device with V2G bidirectional charging and discharging capabilities. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of existing technologies, such as the ease with which flames on the charging equipment can ignite electric vehicles along the charging cable during accidents, the potential for explosions of the charging equipment to expand the accident area, and the difficulty in identifying whether the charging equipment is occupied when visibility is insufficient. The invention proposes a charging device with V2G bidirectional charging and discharging capabilities.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A charging device with V2G bidirectional charging and discharging function includes a base, a protective box fixed to the top of the base by bolts, a fixing column welded to the bottom inner wall of the protective box, a charging pile slidably fitted on the outer wall of the fixing column, a top plate fixed to the top of the charging pile by bolts, and the top of the fixing column slidingly penetrating the top plate, a charging gun on one side of the charging pile, a charging cable at the bottom of the charging gun, and a power supply line at the bottom of the charging pile, which is connected to an external power supply.

[0011] The notification structure is installed inside the charging station to notify car owners and improve their efficiency in finding available charging stations.

[0012] A partition structure is installed on the outer wall of the charging gun to remove the charging gun from the electric vehicle in a timely manner and prevent the fire from spreading to the electric vehicle.

[0013] An isolation structure, installed inside the charging station, is used to isolate the charging station in the event of a fire.

[0014] In one possible design, the prompting structure includes a winding box bolted to the inner wall of the bottom of the charging pile. The winding box has a winding structure for winding the charging cable. A compression plate is slidably connected inside the winding box and is located above the winding structure. A sliding plate is bolted to the top of the compression plate, and the top of the sliding plate extends slidably above the winding box. A first pin is fixed to one side of the sliding plate via a base. A connecting rod is rotatably connected to the charging pile via a circular shaft. A sliding ring is slidably connected to the outer wall of the fixing column via a slider and a groove. A second pin is fixed to one side of the sliding ring via a base. Both the first and second pins are slidably engaged with the connecting rod. An L-shaped rod is welded to the side of the sliding ring away from the second pin. The top of the L-shaped rod slides through the top plate and is fixed to a signpost. Multiple yellow indicator lights are fixed to the outer wall of the signpost. When the winding wheel releases the charging cable, the inner diameter of the charging cable wound on the winding wheel decreases. The slide plate drives the connecting rod to rotate counterclockwise via the first pin. The connecting rod drives the L-shaped rod and the signpost to move up through the second pin. Thus, at night or in foggy weather, the yellow indicator lights at the top of the raised net can alert the car owner that the charging station is in use, improving the efficiency of the car owner in finding an available charging station.

[0015] In one possible design, the winding structure includes a winding wheel rotatably connected inside a winding box, with one end of the charging cable away from the charging gun extending into the winding box and winding around the outer wall of the winding wheel. The bottom of the extrusion plate contacts the outermost charging cable. A rotating motor is bolted to one side of the winding box, and the output shaft of the rotating motor extends into the winding box and is fixedly connected to one end of the winding wheel's shaft. The winding wheel winds up the charging cable. In the charging state, the charging cable is pulled out of the winding box, and the inner diameter of the charging cable winding around the outer wall of the winding wheel decreases, thereby causing the extrusion plate to move downwards to control the indicator structure.

[0016] In one possible design, the partition structure includes a fixing ring fixedly sleeved on the outer wall of the charging gun. Multiple screws rotatably pass through the fixing ring. Each screw has a sleeve threaded onto its outer wall. One end of each sleeve is bolted to a common washer, which slidably fits onto the outer wall of the charging gun. The other end of each screw is fixed with a gear. A geared ring rotatably fits onto the outer wall of the charging gun, meshing with the gear. A drive motor is bolted to the bottom of the charging gun, and the output shaft of the drive motor is connected to one of the screws... A gear is fixedly connected, and the outer wall of the charging gun is bolted with a protective cover that protects the drive motor, gear ring, and gears. The drive motor drives the screw to rotate through the engagement of the gear and gear ring. The screw pushes the sleeve and washer to one side, and the washer contacts the car. Through the push of the washer, the charging gun is removed from the charging port of the car, preventing the flame on the charging equipment from easily igniting the electric vehicle along the charging cable. Then, the rotating motor is started, which drives the winding wheel to rotate and wind up the charging cable to prevent the charging cable from being exposed to the outside and expanding the fire range.

[0017] In one possible design, the isolation structure includes two fixed blocks fixedly connected to the inner wall of the bottom of the charging pile, with the two fixed blocks located on both sides of a fixed column. A fixed rod slides through each of the two fixed blocks, and an iron pin plate is welded to the end of each fixed rod that is close to the other. The outer wall of the fixed column has two slots that engage with the iron pin plates. A first spring is fitted onto the outer wall of each of the two fixed rods. The end of the first spring near the fixed column is fixedly connected to the iron pin plate, and the other end of the first spring is fixedly connected to the fixed block. An electromagnet is bolted to the side of each of the two fixed blocks that is close to the other, and a magnetic attraction is generated between the electromagnet and the iron pin plate. The electromagnet generates a strong magnetic force on the iron pin plate, causing the iron pin plate to disengage from the slot, releasing the braking of the fixed column and the charging pile. The charging pile falls into the protective housing, and the top plate closes the protective housing, isolating the charging pile and preventing damage to surrounding vehicles in the event of an explosion.

[0018] In one possible design, a storage cylinder is bolted to one inner wall of the charging pile, and a rubber sleeve is bolted to the inner wall of the storage cylinder near the fixing post. The end of the charging gun near the fixing post extends into the rubber sleeve. When the charging gun is inserted into the rubber sleeve, the rubber sleeve can seal the discharge port of the charging gun to prevent external dust from entering the discharge port and affecting subsequent charging operations.

[0019] In one possible design, the protective box has multiple ventilation holes on both sides, multiple drainage holes in the base, and multiple round holes at the bottom of the protective box that match the drainage holes. The drainage holes allow rainwater collected inside the protective box to be drained, while the ventilation holes accelerate air circulation inside the protective box and speed up the evaporation of rainwater.

[0020] In one possible design, a smoke sensor and a temperature sensor are bolted to the top inner wall of the charging pile, and a backup battery is bolted to one side inner wall of the charging pile. The backup battery is electrically connected to the smoke sensor, the temperature sensor, the drive motor, the rotation motor, and the electromagnet. In the event of a fire at the charging pile, the backup battery can provide backup power to the smoke sensor, the temperature sensor, the drive motor, the rotation motor, and the electromagnet.

[0021] In one possible design, a hanging rod is bolted to one side of the charging pile, with one end of the hanging rod passing through the charging gun. An L-shaped protective sleeve is rotatably connected to one side of the charging pile, with one end of the charging cable passing through the L-shaped protective sleeve. The distance of the inner circular shaft of the connecting rod near the first pin is less than the distance of the circular shaft near the second pin. The charging gun can be hung on the hanging rod, and the charging cable can be protected by the L-shaped protective sleeve. Through the cooperation of the first pin, connecting rod, and second pin, the sliding ring can be driven to move a larger distance when the sliding plate moves a small distance, thereby raising the signboard for easy viewing by the car owner.

[0022] In one possible design, pressure blocks are welded to both sides of the bottom of the top plate, and sealing grid plates for sealing ventilation holes are slidably connected to the inner walls of the two opposite sides of the protective box. Multiple pads are fixed to the inner walls of the two opposite sides of the protective box by bolts, and a second spring is fixed to the top of each of the multiple pads. The top of each of the multiple second springs is fixedly connected to the bottom of the sealing grid plate. When the top plate moves down, the pressure blocks squeeze the sealing grid plate down, and the sealing grid plate can better seal the ventilation holes. The charging pile falls into the protective box and seals the drainage hole, thus sealing the protective box and preventing outside air from entering the protective box, effectively reducing the fire.

[0023] In this invention, the outer walls of multiple screws are threaded with sleeves, one end of each sleeve is fixedly connected to the same washer by bolts, and the other end of each screw is fixed with a gear, with the gear ring meshing with the gear. The screws rotate and push the sleeves and washer to one side. Through the push of the washer, the charging gun is removed from the charging port of the car, preventing the flame on the charging equipment from easily igniting the electric vehicle along the charging cable. Then, the rotating motor is started, which drives the winding wheel to rotate and wind up the charging cable, preventing the charging cable from being exposed to the outside and expanding the fire range.

[0024] In this invention, a first pin is fixed to one side of the skateboard, and a second pin is fixed to one side of the sliding ring. The first pin and the second pin are evenly connected and slide in a sliding engagement. A marker platform is fixed to one side of the sliding ring via an L-shaped rod. When the winding wheel releases the charging cable, the inner diameter of the charging cable wound on the winding wheel decreases. The skateboard drives the connecting rod to rotate counterclockwise via the first pin, and the connecting rod drives the L-shaped rod and the marker platform to move up via the second pin. Thus, in nighttime or foggy weather, the yellow indicator light at the top of the raised grid can alert the car owner, improving the efficiency of the car owner in finding an available charging station.

[0025] In this invention, iron pin plates are welded to the ends of the two fixing rods that are close to each other. The outer wall of the fixing column is provided with two slots. Electromagnets are fixed to the sides of the two fixing blocks that are close to each other by bolts, and magnetic attraction is generated between the electromagnets and the iron pin plates. The electromagnets generate a strong magnetic force on the iron pin plates, and the iron pin plates are disengaged from the slots, releasing the braking of the fixing column and the charging pile. The charging pile falls into the protective box, and the top plate just closes the protective box, which can isolate the charging pile and prevent damage to surrounding cars in the event of an explosion of the charging pile.

[0026] In this invention, pressure blocks are welded to both sides of the bottom of the top plate, and closed grid plates are slidably connected to the inner walls of the two opposite sides of the protective box. When the top plate moves down, the pressure blocks squeeze the closed grid plates down, and the closed grid plates can better seal the ventilation holes. The charging pile falls into the protective box and seals the drainage holes, thereby sealing the protective box and preventing outside air from entering the protective box, effectively reducing the fire.

[0027] In this invention, a screw drives a washer ring to move, pulling the charging gun out of the electric vehicle. This prevents flames from easily igniting the electric vehicle via the charging cable in the event of a fire in the charging equipment. When the charging gun is charging, it can drive the indicator platform to move upward to alert the driver and improve the efficiency of finding an available charging station. In addition, in the event of a fire in a charging station, the charging station can be promptly placed in a protective enclosure to isolate it and prevent damage to surrounding vehicles in the event of an explosion. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0029] Figure 2 This is a three-dimensional cross-sectional view of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0030] Figure 3 This is a three-dimensional cross-sectional view of the storage tube of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0031] Figure 4 This is a three-dimensional exploded structural diagram of the gears, screws, and washers of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0032] Figure 5 This is a three-dimensional cross-sectional view of the winding box of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0033] Figure 6 This is a three-dimensional exploded structural diagram of the connecting rod, sliding plate, and sliding ring of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0034] Figure 7 This is a three-dimensional exploded structural diagram of the iron pin plate, electromagnet, and fixing block of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 1 of the present invention.

[0035] Figure 8 This is a three-dimensional cross-sectional structural diagram of the charging pile and protective enclosure of the charging device with V2G bidirectional charging and discharging function provided in Embodiment 2 of the present invention.

[0036] In the diagram: 1. Base; 2. Protective housing; 3. Fixing column; 4. Charging pile; 5. Top plate; 6. Storage tube; 7. Rubber sleeve; 8. Charging gun; 9. Hanging rod; 10. Fixing ring; 11. Screw; 12. Sleeve; 13. Washer ring; 14. Gear ring; 15. Gear; 16. Drive motor; 17. Rewind box; 18. Rewind wheel; 19. Rotating motor; 20. Charging cable; 21. L-shaped protective sleeve; 22. Extrusion plate; 23. Slide plate; 24. First pin; 25. 26. Sliding ring; 27. Second pin; 28. Connecting rod; 29. ​​L-shaped rod; 30. Marker platform; 31. Yellow indicator light; 32. Slot; 33. Iron pin plate; 34. Fixing rod; 35. Fixing block; 36. First spring; 37. Electromagnet; 38. Ventilation hole; 39. Drain hole; 40. Power supply line; 41. Backup battery; 42. Smoke sensor; 43. Temperature sensor; 44. Pressure block; 45. Enclosed grid plate; 46. Second spring; 47. Pad block. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Example 1

[0039] Reference Figures 1-7 A charging device with V2G bidirectional charging and discharging function is used in the field of charging equipment. It includes a base 1, a protective box 2 fixed to the top of the base 1 by bolts, a fixing column 3 welded to the bottom inner wall of the protective box 2, a charging pile 4 slidably sleeved on the outer wall of the fixing column 3, a top plate 5 fixed to the top of the charging pile 4 by bolts, and the top of the fixing column 3 slidingly penetrating the top plate 5. A charging gun 8 is provided on one side of the charging pile 4, a charging cable 20 is provided at the bottom of the charging gun 8, and a power supply line 39 is provided at the bottom of the charging pile 4, and the power supply line 39 is connected to an external power supply.

[0040] Reference Figure 2 The protective box 2 has multiple ventilation holes 37 on both sides for ventilation, multiple drainage holes 38 in the base 1, and multiple round holes at the bottom of the protective box 2, which are matched with the drainage holes 38. The drainage holes 38 can drain the rainwater collected in the protective box 2 during rainy days. In addition, the ventilation holes 37 can accelerate the air circulation in the protective box 2 and accelerate the evaporation of rainwater in the protective box 2.

[0041] Reference Figure 2 and Figure 3 A storage tube 6 is fixed to one side of the inner wall of the charging pile 4 by bolts. A rubber sleeve 7 is fixed to the inner wall of the storage tube 6 near the fixing column 3 by bolts. The end of the charging gun 8 near the fixing column 3 extends into the rubber sleeve 7. When the charging gun 8 is inserted into the rubber sleeve 7, the rubber sleeve 7 can seal the discharge port of the charging gun 8 to prevent external dust from entering the discharge port and affecting the subsequent charging operation.

[0042] Reference Figure 2 , Figure 5 and Figure 6The device also includes a prompting structure installed inside the charging pile 4 to prompt the car owner and improve the efficiency of the car owner in finding an available charging pile 4. The prompting structure includes a winding box 17 fixed to the inner wall of the bottom of the charging pile 4 by bolts. The winding box 17 has a winding structure for winding the charging cable 20. A compression plate 22 is slidably connected inside the winding box 17 and is located above the winding structure. A sliding plate 23 is fixed to the top of the compression plate 22 by bolts, and the top of the sliding plate 23 slides to the top of the winding box 17. A first pin 24 is fixed to one side of the sliding plate 23 through a base 1. A connecting rod 27 is rotatably connected inside the charging pile 4 through a round shaft. A sliding ring 25 is slidably connected to the outer wall of the fixing column 3 through a slider and a groove. A first pin 24 is fixed to one side of the sliding ring 25 through the base 1. The two pins 26, the first pin 24 and the second pin 26 are both slidably engaged with the connecting rod 27. An L-shaped rod 28 is welded to the side of the sliding ring 25 away from the second pin 26. The top of the L-shaped rod 28 slides through the top plate 5 and is fixed to the indicator platform 29. Multiple yellow indicator lights 30 are fixed to the outer wall of the indicator platform 29. When the winding wheel 18 releases the winding of the charging cable 20, the inner diameter of the charging cable 20 wound on the winding wheel 18 decreases. The slide plate 23 drives the connecting rod 27 to rotate counterclockwise through the first pin 24. The connecting rod 27 drives the L-shaped rod 28 and the indicator platform 29 to move upward through the second pin 26. Thus, at night or in foggy weather, the yellow indicator lights 30 at the top of the net can remind the car owner that the charging pile 4 is in use, improving the efficiency of the car owner in finding an available charging pile 4.

[0043] Reference Figure 5 The winding structure includes a winding wheel 18 rotatably connected inside a winding box 17, with one end of the charging cable 20 away from the charging gun 8 extending into the winding box 17 and winding around the outer wall of the winding wheel 18. The bottom of the extrusion plate 22 contacts the outermost charging cable 20. A rotating motor 19 is fixed to one side of the winding box 17 by bolts. The output shaft of the rotating motor 19 extends into the winding box 17 and is fixedly connected to one end of the rotating shaft of the winding wheel 18. The winding wheel 18 winds up the charging cable 20. In the charging state, the charging cable 20 is pulled out from the winding box 17, and the inner diameter of the charging cable 20 winding around the outer wall of the winding wheel 18 decreases, thereby causing the extrusion plate 22 to move downward, which is used to control the prompting structure.

[0044] Reference Figures 2-4The device also includes a partition structure on the outer wall of the charging gun 8, used to remove the charging gun 8 from the electric vehicle in a timely manner to prevent the fire from spreading to the electric vehicle; the partition structure includes a fixing ring 10 fixedly sleeved on the outer wall of the charging gun 8, with multiple screws 11 rotatably passing through the fixing ring 10, and sleeves 12 threaded onto the outer walls of the multiple screws 11. One end of the multiple sleeves 12 is fixedly connected to the same washer 13 by bolts, and the washer 13 is slidably sleeved on the outer wall of the charging gun 8. The other end of the multiple screws 11 is fixed with gears 15, and a gear ring 14 is rotatably sleeved on the outer wall of the charging gun 8, with the gear ring 14 meshing with the gear 15. The bottom of the charging gun 8 is fixed with a drive motor 16 by bolts, and the drive motor... The output shaft of motor 16 is fixedly connected to one of the gears 15. The outer wall of the charging gun 8 is fixed with a protective cover to protect the drive motor 16, gear ring 14 and gear 15 by bolts. The drive motor 16 drives the screw 11 to rotate through the cooperation of gear 15 and gear ring 14. The screw 11 pushes the sleeve 12 and washer 13 to move to one side. The washer 13 comes into contact with the car. Through the push of the washer 13, the charging gun 8 is removed from the charging port of the car to prevent the flame on the charging equipment from easily igniting the electric vehicle along the charging cable 20. Then, the rotating motor 19 is started. The rotating motor 19 drives the winding wheel 18 to rotate to wind up the charging cable 20 to prevent the charging cable 20 from being outside and expanding the fire range.

[0045] Reference Figure 2 , Figure 3 Figure 6 A hanging rod 9 is fixed to one side of the charging pile 4 by bolts, and one end of the hanging rod 9 passes through the charging gun 8. An L-shaped protective sleeve 21 is rotatably connected to one side of the charging pile 4, and one end of the charging cable 20 passes through the L-shaped protective sleeve 21. The distance between the inner circular shaft of the connecting rod 27 and the first pin 24 is smaller than the distance between the circular shaft and the second pin 26. The charging gun 8 can be hung on the hanging rod 9, and the charging cable 20 can be protected by the L-shaped protective sleeve 21. With the cooperation of the first pin 24, the connecting rod 27 and the second pin 26, the sliding ring 25 can be driven to move a larger distance when the sliding plate 23 moves a small distance, thereby raising the sign 29 for easy viewing by the car owner.

[0046] Reference Figure 2 and Figure 7The device also includes an isolation structure installed inside the charging pile 4 for isolating the charging pile 4 in the event of a fire. The isolation structure includes two fixing blocks 34 fixedly connected to the inner wall of the bottom of the charging pile 4, with the two fixing blocks 34 located on both sides of the fixing column 3. A fixing rod 33 slides through each of the two fixing blocks 34, and an iron pin plate 32 is welded to the end of each fixing rod 33 that is close to each other. The outer wall of the fixing column 3 is provided with two slots 31, and the slots 31 engage with the iron pin plates 32. A first spring 35 is sleeved on the outer wall of each of the two fixing rods 33, and the first spring 35 is close to the fixing rod 32. One end of the column 3 is fixedly connected to the iron pin plate 32, and the other end of the first spring 35 is fixedly connected to the fixing block 34. The two fixing blocks 34 are fixed with electromagnets 36 by bolts on the side that is close to each other, and the electromagnets 36 and the iron pin plate 32 generate magnetic attraction. The electromagnets 36 generate a strong magnetic force on the iron pin plate 32, and the iron pin plate 32 is disengaged from the slot 31, releasing the braking of the fixing column 3 and the charging pile 4. The charging pile 4 falls into the protective box 2, and the top plate 5 just closes the protective box 2, which can isolate the charging pile 4 and prevent damage to the surrounding cars in the event of an explosion of the charging pile 4.

[0047] Reference Figures 1-7 The top inner wall of the charging pile 4 is fixed with a smoke sensor 41 and a temperature sensor 42 by bolts. The inner wall of one side of the charging pile 4 is fixed with a backup battery 40 by bolts. The backup battery 40 is electrically connected to the smoke sensor 41, the temperature sensor 42, the drive motor 16, the rotation motor 19 and the electromagnet 36. In the event of a fire in the charging pile 4, the backup battery 40 can provide backup power to the smoke sensor 41, the temperature sensor 42, the drive motor 16, the rotation motor 19 and the electromagnet 36.

[0048] Reference Figure 1 The charging pile 4 has the same function as the V2G charging and discharging device in the invention with announcement number CN106208141B.

[0049] Example 2

[0050] refer to Figure 8 Improvements based on Example 1: Pressure blocks 43 are welded to both sides of the bottom of the top plate 5. Sealing grid plates 44 for sealing ventilation holes 37 are slidably connected to the inner walls of the protective box 2 on both sides away from each other. Multiple pads 46 are fixed to the inner walls of the protective box 2 on both sides away from each other by bolts. Second springs 45 are fixed to the top of each of the multiple pads 46, and the tops of the multiple second springs 45 are fixedly connected to the bottom of the sealing grid plates 44. When the top plate 5 moves downward, the pressure blocks 43 press the sealing grid plates 44 downward, allowing the sealing grid plates 44 to better seal the ventilation holes 37. The charging pile 4 falls inside the protective box 2 and seals the drainage holes 38, thus sealing the protective box 2 and preventing outside air from entering, effectively reducing the fire.

[0051] The method for using a charging device with V2G bidirectional charging and discharging function includes the following steps:

[0052] S1. When charging, the charging gun 8 is taken out from the storage tube 6 and inserted into the charging port of the electric vehicle to charge the vehicle. At this time, the charging gun 8 pulls the charging cable 20, and the winding wheel 18 releases the winding of the charging cable 20. Since the charging cable 20 has been wound around the winding wheel 18 multiple times before, the inner diameter of the winding wheel 18 when winding the charging cable 20 is reduced. The extrusion plate 22 and the slide plate 23 move down under their own gravity. The slide plate 23 drives the connecting rod 27 to rotate counterclockwise through the first pin 24. The connecting rod 27 drives the L-shaped rod 28 and the indicator platform 29 to move up through the second pin 26. Thus, at night or in foggy weather, the yellow indicator light 30 at the top of the net can indicate to the car owner that the charging pile 4 is in use, improving the efficiency of the car owner in finding an available charging pile 4.

[0053] S2. When the charging pile 4 malfunctions and a fire occurs, the backup battery 40 starts up, providing power to the smoke sensor 41, temperature sensor 42, drive motor 16, rotary motor 19 and electromagnet 36. The smoke sensor 41 and temperature sensor 42 receive smoke and temperature signals from the base 1 and start the drive motor 16. The drive motor 16 drives the screw 11 to rotate through the engagement of the gear 15 and the gear ring 14. The screw 11 pushes the sleeve 12 and the washer 13 to move to one side. The washer 13 comes into contact with the car. Through the push of the washer 13, the charging gun 8 is removed from the charging port of the car, preventing the flame on the charging equipment from easily igniting the electric vehicle along the charging cable 20. Then the rotary motor 19 starts up, and the rotary motor 19 drives the winding wheel 18 to rotate, winding up the charging cable 20 to prevent the charging cable 20 from being outside and expanding the fire range.

[0054] S3. In addition, when the charging pile 4 catches fire, the electromagnet 36 is energized and generates a strong magnetic force on the iron pin plate 32. The iron pin plate 32 is disengaged from the slot 31, releasing the brakes on the fixing column 3 and the charging pile 4. The charging pile 4 falls into the protective box 2, and the top plate 5 just closes the protective box 2, which can isolate the charging pile 4 and prevent damage to surrounding cars in the event of an explosion of the charging pile 4.

[0055] S4. When the top plate 5 moves down, the pressure block 43 squeezes the closed grid plate 44 to move down. The closed grid plate 44 can better seal the ventilation hole 37, while the charging pile 4 falls into the protective box 2 to block the drainage hole 38. This is used to seal the protective box 2, prevent outside air from entering the protective box 2, and effectively reduce the fire.

[0056] However, as is well known to those skilled in the art, the working principles and wiring methods of the electromagnet 36, yellow indicator light 30, rotating motor 19, drive motor 16, smoke sensor 41, temperature sensor 42 and backup battery 40 are commonplace and belong to conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0057] 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.

Claims

1. A charging device with V2G bidirectional charging and discharging function, comprising a base (1), characterized in that, The base (1) is fixed to the top of a protective box (2) by bolts. A fixing column (3) is welded to the bottom inner wall of the protective box (2). A charging pile (4) is slidably sleeved on the outer wall of the fixing column (3). A top plate (5) is fixed to the top of the charging pile (4) by bolts. The top of the fixing column (3) slides through the top plate (5). A charging gun (8) is provided on one side of the charging pile (4). A charging cable (20) is provided at the bottom of the charging gun (8). A prompting structure is installed inside the charging pile (4) to prompt the car owner and improve the efficiency of the car owner in finding an available charging pile (4). The prompting structure includes a winding box (17) fixed to the inner wall of the bottom of the charging pile (4) by bolts. The winding box (17) is provided with a winding structure for winding the charging cable (20). A pressing plate (22) is slidably connected inside the winding box (17), and the pressing plate (22) is located above the winding structure. A sliding plate (23) is fixed to the top of the pressing plate (22) by bolts, and the top of the sliding plate (23) slides to the top of the winding box (17). One side of the sliding plate (23) is fixed to a base (1). A pin (24) is connected to a connecting rod (27) via a circular shaft inside the charging pile (4). A sliding ring (25) is slidably connected to the outer wall of the fixed column (3) via a slider and a groove. A second pin (26) is fixed to one side of the sliding ring (25) via a base (1). Both the first pin (24) and the second pin (26) are slidably engaged with the connecting rod (27). An L-shaped rod (28) is welded to the side of the sliding ring (25) away from the second pin (26). The top of the L-shaped rod (28) slides through the top plate (5) and is fixed to a signage platform (29). Multiple yellow indicator lights (30) are fixed to the outer wall of the signage platform (29). A partition structure is installed on the outer wall of the charging gun (8) to remove the charging gun (8) from the electric vehicle in a timely manner and prevent the fire from spreading to the electric vehicle. The partition structure includes a fixing ring (10) fixedly sleeved on the outer wall of the charging gun (8). Multiple screws (11) are rotatably passed through the fixing ring (10). The outer walls of the multiple screws (11) are threaded with sleeves (12). One end of the multiple sleeves (12) is fixedly connected to the same washer (13) by bolts, and the washer (13) is slidably sleeved on the charging gun (8). The outer wall of the charging gun (8) has a gear (15) fixed at the other end of each of the screws (11). The outer wall of the charging gun (8) is fitted with a toothed ring (14), which meshes with the gear (15). The bottom of the charging gun (8) is fixed with a drive motor (16) by bolts, and the output shaft of the drive motor (16) is fixedly connected to one of the gears (15). The outer wall of the charging gun (8) is fixed with a protective cover that protects the drive motor (16), the toothed ring (14), and the gear (15) by bolts. An isolation structure is installed inside the charging pile (4) to isolate the charging pile (4) in the event of a fire. The isolation structure includes two fixing blocks (34) fixedly connected to the inner wall of the bottom of the charging pile (4), and the two fixing blocks (34) are located on both sides of the fixing column (3). A fixing rod (33) slides through each of the two fixing blocks (34), and an iron pin plate (32) is welded to the end of each fixing rod (33) that is close to each other. The outer wall of the fixing column (3) is provided with two slots (32). 1), and the slot (31) engages with the iron pin plate (32). The outer walls of the two fixing rods (33) are fitted with a first spring (35). The end of the first spring (35) near the fixing post (3) is fixedly connected to the iron pin plate (32). The other end of the first spring (35) is fixedly connected to the fixing block (34). The two fixing blocks (34) are fixed with an electromagnet (36) by bolts on the side that is close to each other. The electromagnet (36) and the iron pin plate (32) generate magnetic attraction.

2. The charging device with V2G bidirectional charging and discharging function according to claim 1, characterized in that, The winding structure includes a winding wheel (18) rotatably connected inside the winding box (17), and the end of the charging cable (20) away from the charging gun (8) extends into the winding box (17) and is wound around the outer wall of the winding wheel (18), and the bottom of the extrusion plate (22) touches the outermost charging cable (20). A rotating motor (19) is fixed to one side of the winding box (17) by bolts, and the output shaft of the rotating motor (19) extends into the winding box (17) and is fixedly connected to one end of the rotating shaft of the winding wheel (18).

3. The charging device with V2G bidirectional charging and discharging function according to claim 2, characterized in that, A storage tube (6) is fixed to one side of the inner wall of the charging pile (4) by bolts. A rubber sleeve (7) is fixed to the inner wall of the storage tube (6) near the fixing column (3) by bolts. The end of the charging gun (8) near the fixing column (3) extends into the rubber sleeve (7).

4. The charging device with V2G bidirectional charging and discharging function according to claim 3, characterized in that, The protective box (2) has multiple ventilation holes (37) on both sides, the base (1) has multiple drainage holes (38), and the bottom of the protective box (2) has multiple round holes that match the drainage holes (38).

5. The charging device with V2G bidirectional charging and discharging function according to claim 4, characterized in that, The top inner wall of the charging pile (4) is fixed with a smoke sensor (41) and a temperature sensor (42) by bolts. The inner wall of one side of the charging pile (4) is fixed with a spare battery (40) by bolts. The spare battery (40) is electrically connected to the smoke sensor (41), the temperature sensor (42), the drive motor (16), the rotation motor (19), and the electromagnet (36).

6. The charging device with V2G bidirectional charging and discharging function according to claim 5, characterized in that, One side of the charging pile (4) is fixed with a hanging rod (9) by bolts, and one end of the hanging rod (9) passes through the charging gun (8). One side of the charging pile (4) is rotatably connected with an L-shaped protective sleeve (21), and one end of the charging cable (20) passes through the L-shaped protective sleeve (21). The distance between the inner circular shaft of the connecting rod (27) and the first pin (24) is less than the distance between the circular shaft and the second pin (26).

7. The charging device with V2G bidirectional charging and discharging function according to claim 6, characterized in that, The top plate (5) has pressure blocks (43) welded on both sides of the bottom. The inner walls of the protective box (2) on both sides away from each other are slidably connected with a closed grid plate (44) for sealing the ventilation hole (37). The inner walls of the protective box (2) on both sides away from each other are fixed with multiple pads (46) by bolts. The top of each of the multiple pads (46) is fixed with a second spring (45). The top of each of the multiple second springs (45) is fixedly connected to the bottom of the closed grid plate (44).

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