A charging interface structure of a ground alternating current charging pile

Abstract

The application relates to the field of charging technology and discloses a charging interface structure of a ground alternating current charging pile, which comprises an interface groove assembled on the charging pile, a cover plate hingedly connected to the charging pile and matched with the interface groove, and a water draining assembly arranged between the cover plate and the interface groove; a plurality of partitions are assembled in the interface groove, a receiving groove matched with the partitions is arranged on the inner wall of the interface groove, a protection assembly for driving the partitions is assembled in the interface groove, and the partitions have a protection state and a receiving state; the protection assembly comprises a groove body arranged on the inner wall of the interface groove, and a pressing plate is assembled in the groove body; when the charging interface is plugged with a charging gun. The application adopts a multilayer composite water draining sealing structure and a mechanical linkage dustproof partition, can prevent moisture and dirt when the charging pile is idle, can block flying dust when charging, avoids dust and moisture pollution of charging terminals, reduces operation and maintenance cost, and improves equipment operation stability and service life.

Description

Technical Field

[0001] This invention relates to the field of charging equipment technology, and in particular to a charging interface structure for a ground-based AC charging pile. Background Technology

[0002] Ground-mounted AC charging piles are slow-charging devices for electric vehicles. They are fixed installation structures placed on the ground, with the entire pile body directly fixed to the ground foundation. They are characterized by stable installation, neat layout, and suitability for public and park scenarios. They are currently the most widely used energy replenishment devices for new energy vehicles. Unlike DC charging piles, these devices do not have a high-power rectifier conversion module inside. Their core function is to safely and controllably transmit AC power from the power grid, and they do not directly complete the AC / DC power conversion.

[0003] Charging piles with charging interfaces are a type of electric vehicle charging system. They are contact-type wired charging devices with an exposed charging interface structure integrated on the pile body. Power transmission is achieved through plugging in a matching charging gun.

[0004] Currently, with plug-in charging stations, the charging port cover needs to be open during charging. This allows dust from nearby vehicles to enter the port slot, accumulating near the terminals over time. When the charging gun is plugged in or unplugged, this dust can be stirred up and fall into the terminals, contaminating them. Furthermore, in humid weather, the port slot can be filled with humid air due to the breathing effect of the chamber. Dust can absorb moisture from this air, forming damp grime that is difficult to clean and increases the maintenance costs of the charging station. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and to propose a charging interface structure for a ground-based AC charging pile.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A charging interface structure for a ground-based AC charging pile includes an interface slot mounted on the charging pile, a cover plate adapted to the interface slot is hinged to the charging pile, and a hydrophobic component is provided between the cover plate and the interface slot. The interface slot is equipped with multiple partitions, and the inner wall of the interface slot is provided with a storage slot adapted to the partitions. The interface slot is equipped with a protective component for driving the partitions, and the partitions have a protective state and a storage state. The protective component includes a groove disposed on the inner wall of the interface groove, and a pressure plate is assembled in the groove. When the charging port is plugged into the charging gun, the pressure plate is pushed, which simultaneously pushes the partition to move, changing the partition from a storage state to a protective state.

[0007] Furthermore, the hydrophobic component includes an annular plate installed at the opening of the interface groove, the annular plate being provided with an annular groove, and an annular pad matching the annular groove being fixedly connected to the cover plate.

[0008] Furthermore, the annular groove is divided into an inner groove side and an outer groove side. The lower end face of the outer groove side is a slope structure with a low middle and high sides, and the upper end face of the inner groove side is a slope structure with a high middle and low sides. A drainage hole connected to the outside is provided at the center of the lower end of the outer groove side.

[0009] Furthermore, the partition is an irregularly shaped plate, and the side of the partition facing the center of the interface groove is set in an inward arc shape. Both ends of the arc-shaped side are connected with a bevel, and the end of the bevel away from the arc-shaped side extends to the edge of the partition.

[0010] Furthermore, the protective assembly also includes an L-shaped rod, a shaped plate, and a rack that are slidably assembled in the groove. The L-shaped rod is generally L-shaped, and one end of the L-shaped rod is fixedly connected to the partition. The shaped plate is generally U-shaped and is connected to the L-shaped rod by a gear set. The rack is fixedly connected to the pressure plate. A first gear is rotatably installed in the groove. The rack and the shaped plate are both provided with first tooth grooves, and the two first tooth grooves are respectively meshed with the two sides of the first gear.

[0011] Furthermore, the gear set includes a shaft rotatably mounted with the groove body, a second gear and a third gear coaxially mounted outside the shaft body, a second tooth groove meshing with the second gear on the L-shaped rod body, and a third tooth groove meshing with the third gear on the irregular plate.

[0012] Furthermore, the projections of the second and third tooth grooves onto a plane perpendicular to the central axis of the shaft are perpendicular to each other.

[0013] Furthermore, the partition is slidably connected to the inner wall of the storage groove via a reset component.

[0014] Furthermore, the annular pad includes a water filter layer, an air permeable layer, and a water guiding layer. The water filter layer and the air permeable layer are both fixedly connected to the cover plate. The air permeable layer is located at a position of the water filter layer away from the side wall of the interface groove, and the water guiding layer is located at a position of the water filter layer away from the cover plate. The end of the water guiding layer near the side wall of the interface groove has a raised slope. The water filter layer, the air permeable layer, and the water guiding layer are a hot-pressed composite co-vulcanized structure. The water filter layer is made of polytetrafluoroethylene, the air permeable layer is made of fluorosilicone rubber, and the water guiding layer is made of soft rubber.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting a multi-layer composite hydrophobic sealing component with integrated functions of water filtration, air permeability and water guiding between the interface groove and the cover plate, and setting a partition protection structure inside the interface groove that can automatically extend and retract with the charging gun insertion action, the equipment can weaken the cavity breathing effect by relying on the closed-loop sealing of the annular plate, annular groove and multi-layer annular gasket when idle, and perform step-by-step water filtration, pressure stabilization and air permeability and directional drainage of the infiltrated humid air, effectively blocking dust and water accumulation from entering the groove, and avoiding the accumulation of moisture, dust and dirt in the groove. 2. When the charging cover is open, multiple sets of irregularly shaped partitions can be automatically driven to extend through a purely mechanical transmission structure and cooperate with each other to form a surrounding dustproof barrier, blocking external dust from entering the interface terminal area and preventing dust from falling and contaminating the terminals during the insertion and removal of the charging gun. The overall structure does not require additional electronic control components. It can automatically switch between the protective state and the storage state by relying on the insertion action. The structure is stable and has good protection continuity. It can keep the charging interface terminals clean and dry for a long time, reduce terminal corrosion, poor contact and other faults, reduce the cleaning frequency of the charging pile and the overall operation and maintenance cost, and effectively improve the adaptability, operational stability and service life of the ground AC charging pile in outdoor working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the charging pile structure in the charging interface of a ground-based AC charging pile proposed in this invention; Figure 2 This is a schematic diagram of the charging interface cover of a ground AC charging pile according to the present invention, with the cover plate lifted. Figure 3 This is a top perspective view of the charging interface of a ground-based AC charging pile proposed in this invention. Figure 4 This is a perspective view of the charging interface structure of a ground-based AC charging pile proposed in this invention; Figure 5 This is a schematic diagram of the protective component in the charging interface structure of a ground-based AC charging pile proposed in this invention. Figure 6 This is a schematic diagram of the hydrophobic component in the charging interface structure of a ground-based AC charging pile proposed in this invention. Figure 7 This is a structural diagram of the annular plate in the charging interface structure of a ground-based AC charging pile proposed in this invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the annular pad in the charging interface structure of a ground-based AC charging pile proposed in this invention.

[0017] In the diagram: 100, charging pile; 110, cover plate; 200, interface groove; 210, hydrophobic component; 220, annular plate; 230, annular groove; 240, annular pad; 241, water filter layer; 242, breathable layer; 243, water guiding layer; 250, hydrophobic hole; 300, partition plate; 310, protective component; 311, L-shaped rod; 312, irregular plate; 313, rack; 314, pressure plate; 315, shaft; 316, second gear; 317, first gear; 318, third gear; 320, groove; 330, storage groove. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] like Figure 1 and Figure 2 As shown, this invention provides a charging interface structure for a ground-based AC charging pile. An interface slot 200 is mounted on the charging pile 100. A cover plate 110, adapted to the interface slot 200, is hinged to the charging pile 100. A hydrophobic component 210 is provided between the cover plate 110 and the interface slot 200. When the cover plate 110 is closed, it blocks external rainwater, dew, dust, and other impurities. Simultaneously, it precisely guides water vapor and accumulated water that seeps in due to the cavity's breathing effect, reducing dust and humid air entering the interface slot 200 from the source. This avoids dust accumulation and the formation of sludge from the mixture of dust and moisture, effectively protecting the charging interface's metal terminals from contamination and corrosion, reducing the frequency and cost of daily maintenance of the charging pile 100, and ensuring the long-term safety and stability of the charging interface.

[0020] like Figure 6As shown, the hydrophobic component 210 includes an annular plate 220 installed at the opening of the interface groove 200. The annular plate 220 is coaxially arranged with the opening of the interface groove 200, and the outer contour of the annular plate 220 is completely matched with the contour of the opening of the interface groove 200, achieving full coverage assembly of the opening of the interface groove 200. The assembly fit is high and there are no assembly gaps. It can seal the gaps in the closed state of the cover plate 110, preventing external dust from seeping into the groove from the gaps. An annular groove 230 is provided on the annular plate 220. The annular groove 230 is arranged in a closed loop around the annular plate 220 to form a complete annular receiving and sealing cavity. The cover plate 110 is fixedly connected to the annular groove 230. The matching annular gasket 240 can precisely engage and embed itself into the annular groove 230 when the cover plate 110 is fully closed, forming a circumferentially continuous sealing structure. This completely eliminates the assembly gap between the cover plate 110 and the annular plate 220. This closed-loop sealing structure can isolate external dust and moisture from entering the interface groove 200 when the equipment is idle, preventing dust accumulation and humid air intrusion and scaling during idle periods. At the same time, it can weaken the breathing effect of the interface groove 200 cavity, reduce the amount of humid air entering and leaving in high humidity environments, structurally improve the problem of dust and moisture accumulation in the groove, and continuously keep the internal cavity of the interface groove 200 clean and dry.

[0021] like Figure 8 As shown, the annular pad 240 has a multi-layer composite structure, specifically including a water filter layer 241, an air permeable layer 242, and a water guiding layer 243. Both the water filter layer 241 and the air permeable layer 242 are fixedly connected to the cover plate 110. The air permeable layer 242 is located at a position on the water filter layer 241 away from the side wall of the interface groove 200, and the water guiding layer 243 is located at a position on the water filter layer 241 away from the cover plate 110. The end of the water guiding layer 243 near the side wall of the interface groove 200 has a raised slope. This slope is an integrated, smooth transition structure that can guide the flow of trace amounts of permeated water vapor and condensed water droplets in the cavity, preventing water vapor and accumulated water from accumulating in the groove opening and preventing water vapor from combining with residual dust to form dirt. The water filter layer 241, the air permeable layer 242, and the water guiding layer 243 are a hot-pressed composite co-vulcanized structure, which can be adapted to… Under repeated opening and closing, compression, and friction conditions, the cover plate 110 is not prone to delamination, deformation, aging, or failure, thus continuously ensuring dust and moisture protection. The water filter layer 241 is made of polytetrafluoroethylene, the air permeable layer 242 is made of fluorosilicone rubber, and the water guiding layer 243 is made of soft rubber. The air permeable layer 242 is fitted onto the water filter layer 241 near the outer side of the annular plate 220. This effectively blocks liquid water and solid dust impurities while ensuring a small amount of air circulation between the inside and outside of the interface tank 200, balancing the air pressure inside and outside the interface tank 200. This structure can alleviate the breathing effect of the closed cavity, avoid the passive intake of humid air caused by the pressure difference between the inside and outside of the cavity, reduce the retention of humid air in the tank, and prevent dust from adsorbing moisture and forming sludge.

[0022] like Figure 6 and Figure 7 As shown, the annular groove 230 is divided into an inner groove side and an outer groove side. The lower end face of the outer groove side is a slope structure with a lower middle and higher sides, while the upper end face of the inner groove side is a slope structure with a higher middle and lower sides. This structure can collect and gather trace amounts of water, water vapor condensation, and residual dust that may accidentally seep into the outer area of ​​the annular groove 230 towards the center of the annular groove 230, preventing water vapor and dust from spreading and seeping into the internal cavity of the interface groove 200 along both sides of the groove side, thus reducing the accumulation of pollutants inside the annular groove 230. A drainage hole 250 connected to the outside is provided at the lower center of the outer groove side. The water collected at the center of the outer groove side can be directly discharged to the outside of the charging pile 100 through the drainage hole 250, realizing the automatic drainage of seeping water vapor. This prevents water vapor from remaining and solidifying inside the annular groove 230 for a long time, forming stubborn dirt, effectively reducing the difficulty of cleaning the groove, reducing the frequency of maintenance and cleaning, and continuously ensuring a dry and clean working environment inside the interface groove 200.

[0023] like Figure 3 and Figure 4 As shown, the interface slot 200 is equipped with multiple partitions 300. The partitions 300 are made of irregularly shaped materials, which can form an active dustproof protection structure when charging is in operation, preventing dust from entering when the cover 110 is opened during charging. The side of the partition 300 facing the center of the interface slot 200 is concave arc-shaped. This concave arc shape can adapt to the outer contour of the charging gun plug, leaving sufficient clearance for the charging gun insertion operation and not affecting normal charging operation. Both ends of the arc-shaped side are connected to beveled edges, and the end of the beveled edge away from the arc-shaped side extends... The edge of the partition 300 is adapted to the edge of the adjacent partition 300. During protection, it abuts against the adjacent partition 300, thereby protecting the interface groove 200. The inner wall of the interface groove 200 is provided with a storage groove 330 adapted to the partition 300. The interface groove 200 is equipped with a protective component 310 for driving the partition 300. The partition 300 has a protective state and a storage state. The partition 300 and the inner wall of the storage groove 330 are slidably connected by a reset member, which can be made of an air spring.

[0024] like Figure 5 As shown, the gear set includes a shaft 315 rotatably mounted to the groove 320. A second gear 316 and a third gear 318 are coaxially mounted on the shaft 315. An L-shaped rod 311 is provided with a second tooth groove that meshes with the second gear 316. A special-shaped plate 312 is provided with a third tooth groove that meshes with the third gear 318. The projections of the second tooth groove and the third tooth groove on a plane perpendicular to the central axis of the shaft 315 are perpendicular to each other.

[0025] like Figure 5As shown, the protective component 310 includes a groove 320 disposed on the inner wall of the interface groove 200. A pressure plate 314 is installed inside the groove 320. The overall execution structure of the protective component 310 is centrally integrated inside the groove 320. The groove 320 is a closed embedded structure that can provide all-round protection for the internal components, preventing external dust, moisture, and debris from entering the transmission gap, preventing the transmission structure from accumulating dirt, rusting, and jamming, effectively extending the service life of the protective component 310, reducing the probability of equipment failure, and reducing the problem of terminal dust accumulation and scaling caused by the failure of the protective structure.

[0026] like Figure 5 As shown, the protective assembly 310 also includes an L-shaped rod 311, a shaped plate 312, and a rack 313 that are slidably assembled in the groove 320. The L-shaped rod 311 is L-shaped in general, and one end of the L-shaped rod 311 is fixedly connected to the partition plate 300. The shaped plate 312 is U-shaped in general, and the shaped plate 312 and the L-shaped rod 311 are connected by a gear set. The rack 313 is fixedly connected to the pressure plate 314. A first gear 317 is rotatably installed in the groove 320. Both the rack 313 and the shaped plate 312 are provided with first tooth grooves, and the two first tooth grooves are respectively meshed with the two sides of the first gear 317.

[0027] In this embodiment, when the charging port is plugged into the charging gun, the pressure plate 314 is pushed, which simultaneously pushes the partition 300 to move, so that the partition 300 changes from the storage state to the protective state.

[0028] Working principle: 1) Idle state: The cover plate 110 closes and covers the interface groove 200. Relying on the closed-loop locking and sealing structure of the annular plate 220, the annular groove 230 and the multi-layer composite annular gasket 240, it seals the assembly gaps around the opening of the interface groove 200. On the one hand, it has the conventional function of blocking external dust. On the other hand, in the humid weather, humid air is drawn into the interface groove 200 through the assembly gaps due to the respiration of the cavity. With a conventional cover plate, humid air would directly enter the interface groove 200 through the gaps, condensing water droplets. In the front cover 110, when humid air passes through the annular pad 240, the humid air passes through the water filter layer 241 and the air permeable layer 242 in sequence before entering the interface groove 200. When the humid air passes through the water filter layer 241, the water filter layer 241 filters out the water in the air and flows along the water filter layer 241 and the water guide layer 243. The filtered water flows into the annular groove 230 and is discharged through the drainage hole 250. The filtered air then enters the interface groove 200 through the air permeable layer 242, maintaining the dry state inside the interface groove 200.

[0029] 2) Charging state: When the cover 110 is open and the charging gun is inserted, the charging gun plug presses against the pressure plate 314 on the inner wall of the slot 320. The pressure plate 314 is pushed and drives the rack 313 to move linearly. The first gear 317 drives the irregular plate 312 to move, and then the gear set drives the L-shaped rod 311 to move the partition 300. Multiple partitions 300 move synchronously, so that the partitions 300 switch from the storage state to the protective state. Multiple sets of partitions 300 surround the charging interface to form a protective barrier, which can effectively block and prevent dust raised by surrounding vehicles, avoid dust from entering the terminal gaps and accumulating in the terminal contact area, and eliminate the problem of dust contamination of the terminals during the insertion and removal of the gun.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A charging interface structure of a ground alternating current charging pile, comprising an interface slot (200) assembled on a charging pile (100), and a cover plate (110) articulated on the charging pile (100) and matched with the interface slot (200), characterized in that, A hydrophobic component (210) is provided between the cover plate (110) and the interface groove (200). The interface slot (200) is equipped with multiple partitions (300), and the inner wall of the interface slot (200) is provided with a storage slot (330) adapted to the partitions (300). The interface slot (200) is equipped with a protective component (310) for driving the partitions (300). The partitions (300) have a protective state and a storage state. The protective component (310) includes a groove (320) disposed on the inner wall of the interface groove (200), and a pressure plate (314) is assembled inside the groove (320). When the charging port is plugged into the charging gun, the pressure plate (314) is pushed, which simultaneously pushes the partition (300) to move, so that the partition (300) changes from the storage state to the protection state.

2. The charging interface structure of an AC ground charging pile according to claim 1, characterized in that, The hydrophobic component (210) includes an annular plate (220) installed at the opening of the interface groove (200), the annular plate (220) is provided with an annular groove (230), and an annular pad (240) matching the annular groove (230) is fixedly connected to the cover plate (110).

3. The charging interface structure of a ground AC charging pile according to claim 2, characterized in that, The annular groove (230) is divided into an inner groove side and an outer groove side. The lower end face of the outer groove side is a slope structure with a low middle and high sides. The upper end face of the inner groove side is a slope structure with a high middle and low sides. A drainage hole (250) connected to the outside is provided at the center of the lower end of the outer groove side.

4. The charging interface structure of a ground-based AC charging pile according to claim 1, characterized in that, The partition (300) is a special-shaped plate. The side of the partition (300) facing the center of the interface groove (200) is set in an inward arc shape. Both ends of the arc side are connected with a bevel. The end of the bevel away from the arc side extends to the edge of the partition (300).

5. The charging interface structure of a ground-based AC charging pile according to claim 1, characterized in that, The protective assembly (310) further includes an L-shaped rod (311), a shaped plate (312), and a rack (313) slidably assembled in the groove (320). The L-shaped rod (311) is L-shaped in general. One end of the L-shaped rod (311) is fixedly connected to the partition plate (300). The shaped plate (312) is U-shaped in general. The shaped plate (312) and the L-shaped rod (311) are connected by a gear set. The rack (313) is fixedly connected to the pressure plate (314). A first gear (317) is rotatably installed in the groove (320). The rack (313) and the shaped plate (312) are both provided with first tooth grooves. The two first tooth grooves are respectively meshed with the two sides of the first gear (317).

6. The charging interface structure of a ground-based AC charging pile according to claim 5, characterized in that, The gear set includes a shaft (315) rotatably mounted to the groove (320), a second gear (316) and a third gear (318) coaxially mounted on the shaft (315), a second tooth groove that meshes with the second gear (316) on the L-shaped rod (311), and a third tooth groove that meshes with the third gear (318) on the irregular plate (312).

7. The charging interface structure of a ground-based AC charging pile according to claim 6, characterized in that, The projections of the second and third tooth grooves onto a plane perpendicular to the central axis of the shaft (315) are perpendicular to each other.

8. The charging interface structure of a ground-based AC charging pile according to claim 1, characterized in that, The partition (300) and the inner wall of the storage groove (330) are slidably connected by a reset member.

9. The charging interface structure of a ground-based AC charging pile according to claim 2, characterized in that, The annular pad (240) includes a water filter layer (241), an air permeable layer (242), and a water guide layer (243). The water filter layer (241) and the air permeable layer (242) are both fixedly connected to the cover plate (110). The air permeable layer (242) is located at a position away from the side wall of the interface groove (200) of the water filter layer (241). The water guide layer (243) is located at a position away from the cover plate (110) of the water filter layer (241). The end of the water guide layer (243) near the side wall of the interface groove (200) is provided with a raised slope. The water filter layer (241), the air permeable layer (242), and the water guide layer (243) are hot-pressed composite co-vulcanized structures. The water filter layer (241) is made of polytetrafluoroethylene, the air permeable layer (242) is made of fluorosilicone rubber, and the water guide layer (243) is made of soft rubber.

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