Split direct current charging pile for electric automobile

Abstract

The invention discloses a split direct current charging pile for an electric vehicle, and relates to the technical field of charging piles. The charging pile comprises a pile body, ventilation holes are formed in the side face of the pile body, a sealing door is arranged at the front end of the pile body, a charging gun is arranged on the side, away from the ventilation holes, of the pile body, a mounting frame is fixedly mounted in the pile body through bolts, and a circulating cooling mechanism is arranged at the bottom in the pile body. The circulating cooling mechanism comprises a base, a filtering box, a flow dividing box and a cooling liquid box. Through the arrangement of the circulating cooling mechanism, when the charging module runs, an air blower is started to enable external air to enter a shunting box through the cooperation of an air inlet pipe, an air conveying pipe and other components, and the external air is discharged through an air outlet to dissipate heat of the charging module; and meanwhile, through cooperation of a pressure cylinder, a piston rod D and other assemblies, cooling liquid flows in a circulating pipe, so that the temperature of air in the flow dividing box is reduced, and the overall heat dissipation effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a split DC charging pile for electric vehicles. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or electric vehicle power supply equipment, is a device that provides electrical energy to electric vehicles, enabling them to store enough electricity to support their operation. Charging piles are divided into public charging piles and private charging piles. From the charging method point of view, they are divided into AC charging piles and DC charging piles.

[0003] Patent document CN221213572U discloses a split-type, single-pile, single-charger DC charging station. The station comprises a pile body with an internal assembly cavity, flanked by front and rear covers, and a removable mounting bracket. The cavity houses a charging module and an air-cooling assembly, which is secured to the mounting bracket. The air-cooling assembly cools the charging module.

[0004] In the above application document, when the blower is running, the natural air in the external environment of the pile body is transported to the air distribution plate through the lower through holes and the air supply hood, and the air distribution plate evenly transports the external natural cold air from bottom to top, so as to efficiently take away the heat generated by the charging module during the charging process, and finally out of the upper through holes. When the external temperature is high in summer, the effect of dissipating heat to the charging module through natural wind is poor, and the charging module may overheat, so it needs to be improved. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a split DC charging pile for electric vehicles, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a split DC charging pile for electric vehicles, comprising a pile body, a ventilation hole is opened on the side of the pile body, a closed door is provided at the front end of the pile body, a charging gun is provided on the side of the pile body away from the ventilation hole, a mounting frame is fixedly installed inside the pile body by bolts, and a circulating cooling mechanism is provided at the bottom of the interior of the pile body; the circulating cooling mechanism comprises a base, a filter box, a diverter box and a coolant tank, the base is fixedly connected to the bottom of the interior of the pile body, a blower and a reduction gearbox are provided on the top of the base, a rotating shaft is passed through and rotatably connected to the front end of the reduction gearbox, a cam is fixedly connected to the front end of the rotating shaft, and the cooling mechanism comprises a filter box, a diverter box and a coolant tank, the base is fixedly connected to the bottom of the interior of the pile body, a blower and a reduction gearbox are provided on the top of the base, a rotating shaft is passed through and rotatably connected to the front end of the reduction gearbox, and a cam is fixedly connected to the front end of the rotating shaft. An air inlet pipe is provided on the side of the blower, the filter box passes through and is fixedly connected to the side of the pile body near the ventilation hole, the rear end of the blower is provided with an air supply pipe, the diverter box is fixedly installed inside the pile body by bolts, the top of the diverter box passes through and is fixedly connected with an air outlet, the top of the reduction gear box is fixedly connected with a pressure cylinder, a return spring is provided inside the pressure cylinder, the interior of the pressure cylinder is slidably connected with a piston rod D through a return spring piston, the bottom of the piston rod D is fixedly connected with a push plate, the side of the pressure cylinder passes through and is fixedly connected with a liquid inlet pipe, the top of the pressure cylinder passes through and is fixedly connected with a liquid delivery pipe, and the coolant tank is fixedly connected to the inner wall of the pile body.

[0007] According to the above technical solution, a display panel is provided at the front end of the closed door, and a debris removal mechanism and a shaking-off mechanism are provided on the side of the pile body close to the ventilation hole, a reduction gear group is provided inside the reduction box, and the rotating shaft is transmission-connected to the rotating shaft of the blower through the reduction gear group inside the reduction box, a filter cotton plate is inserted into the interior of the filter box, a dust-proof net is provided inside the filter box, a circulation pipe is fixedly connected to the interior of the diversion box, the end of the infusion pipe away from the pressure cylinder is fixedly connected to the circulation pipe, the end of the circulation pipe away from the infusion pipe is fixedly connected to the return pipe, the end of the return pipe away from the circulation pipe passes through and is fixedly connected to the coolant tank, the end of the liquid inlet pipe away from the pressure cylinder passes through and is fixedly connected to the coolant tank, a wear reduction component is provided inside the push plate, and when the blower is turned on, its rotating shaft will drive the rotating shaft to rotate through the reduction gear group, and the rotating shaft speed is relatively slow.

[0008] According to the above technical solution, one end of the air inlet pipe away from the blower passes through and is fixedly connected to the filter box, and one end of the air delivery pipe away from the blower passes through and is fixedly connected to the diversion box. A one-way valve is provided inside the liquid inlet pipe and the liquid delivery pipe. When the blower is turned on, the external air is extracted through the air inlet pipe in conjunction with the filter box and delivered to the diversion box through the air delivery pipe. When negative pressure is formed in the pressure cylinder, the coolant in the coolant tank is sucked in through the liquid inlet pipe, and when the coolant in the pressure cylinder is squeezed, the coolant is delivered to the circulation pipe through the liquid delivery pipe.

[0009] According to the above technical solution, the wear reduction component includes an oil storage chamber, which is opened inside the push plate. An oil filling pipe passes through and is fixedly connected to the top of the oil storage chamber, and a ball is provided at the bottom of the oil storage chamber.

[0010] According to the above technical solution, the cam is close to the bottom of the push plate, and the number of the balls is set to five groups. When the cam rotates, it will squeeze the balls at the bottom of the push plate, thereby driving the push plate to move upward.

[0011] According to the above technical solution, the debris removal mechanism includes a sliding rod, a driving gear and a hydraulic tank. The sliding rod is fixedly connected to the side of the pile body close to the ventilation hole. A telescopic spring is provided on the surface of the sliding rod. The surface of the sliding rod is slidably connected to a row brush through the telescopic spring. The driving gear is fixedly connected to the surface of the rotating shaft. The hydraulic tank passes through and is fixedly connected to the side of the pile body close to the ventilation hole. The internal piston at one end of the hydraulic tank is slidably connected to the piston rod A. The end of the piston rod A away from the hydraulic tank is fixedly connected to a gear rod. The internal piston at the other end of the hydraulic tank is slidably connected to the piston rod B.

[0012] According to the above technical solution, the driving gear is an incomplete gear, and the teeth on the driving gear are initially engaged with the teeth on the gear rod. When the driving gear rotates and its upper teeth are engaged with the teeth on the gear rod, the gear rod will move leftward.

[0013] According to the above technical solution, the end of the piston rod B away from the hydraulic tank is fixedly connected to the top of the row brush, and the bristles of the row brush are in contact with the dustproof net. When the piston rod B moves downward, it will drive the row brush to move downward, and the downward movement of the row brush will clear the debris on the dustproof net.

[0014] According to the above technical solution, the shaking-off mechanism includes a rack, a rotating rod and a pneumatic chamber, the rack is fixedly connected to the brush, the rotating rod is rotatably connected to the side of the pile body close to the ventilation hole, the surface of the rotating rod is fixedly connected to the driven gear, the end of the rotating rod away from the pile body is fixedly connected to the eccentric ring, the pneumatic chamber is fixedly connected to the side of the pile body close to the ventilation hole, an airbag is provided at one end of the pneumatic chamber, and the internal piston at the other end of the pneumatic chamber is slidably connected to the piston rod C.

[0015] According to the above technical solution, the teeth on the rack are engaged with the teeth on the driven gear, the airbag is in an expanded state in the initial state, and the end of the airbag away from the air pressure chamber is close to the eccentric ring, and the end of the piston rod C away from the air pressure chamber is close to the dust net. When the rack moves downward, it will drive the driven gear to rotate through the engagement between the teeth. When the eccentric ring rotates with the rotating rod, it will repeatedly squeeze the airbag. When the piston rod C moves outside the air pressure chamber, it will hit the dust net.

[0016] The present invention provides a split DC charging station for electric vehicles. It has the following beneficial effects: (1) The present invention sets up a circulating cooling mechanism so that when the charging module is in operation, turning on the blower will allow the outside air to enter the diversion box through the cooperation of the air inlet pipe, air delivery pipe and other components and be discharged through the outlet to dissipate heat for the charging module. At the same time, the coolant will flow in the circulation pipe through the cooperation of the pressure cylinder, piston rod D and other components, thereby reducing the temperature of the air in the diversion box and achieving a better overall heat dissipation effect.

[0017] (2) The present invention is provided with a debris removal mechanism, so that when the blower is turned on for heat dissipation, the exhaust brush is driven to move downward repeatedly through the cooperation of the active gear, the gear rod, the hydraulic chamber and other components. The exhaust brush can be repeatedly moved downward to scrape off the debris adsorbed on the dustproof net, thereby preventing the debris adsorbed on the dustproof net from affecting the entry of external air.

[0018] (3) The present invention is provided with a shaking mechanism, so that when the blower is turned on for heat dissipation, the piston rod C is driven to repeatedly hit the dust screen through the cooperation of the air bag, the air pressure chamber and other components, causing the dust screen to shake slightly. The shaking of the dust screen shakes off the debris, and the debris on the dust screen is cleaned in cooperation with the exhaust brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional front view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure at center A; Figure 3 It is a three-dimensional side view of the overall structure of the present invention; Figure 4 This is a three-dimensional schematic diagram of the overall structure of the closed door of the present invention after it is opened; Figure 5 A three-dimensional front view of the circulating cooling mechanism structure of the present invention; Figure 6 A three-dimensional back view of the circulating cooling mechanism structure of the present invention; Figure 7 A three-dimensional cross-sectional view of the circulating cooling mechanism structure of the present invention; Figure 8 A three-dimensional cross-sectional view of the wear reduction component structure of the present invention; Figure 9 A three-dimensional schematic diagram of the impurity removal mechanism structure of the present invention; Figure 10 It is a three-dimensional schematic diagram of the shaking-off mechanism structure of the present invention.

[0020] In the figure: 1. pile body; 2. ventilation hole; 3. closed door; 4. display panel; 5. charging gun; 6. mounting bracket; 7. circulating cooling mechanism; 71. base; 72. blower; 73. reduction gearbox; 74. rotating shaft; 75. cam; 76. air inlet pipe; 77. filter box; 78. filter cotton plate; 79. dust screen; 710. air duct; 711. diverter box; 712. air outlet; 713. circulating pipe; 714. return pipe; 715. pressure cylinder; 716. return spring; 717. piston rod D; 718. push plate; 719. Liquid inlet pipe; 720. Liquid infusion pipe; 721. Coolant tank; 8. Wear reduction component; 81. Oil storage chamber; 82. Oil filling pipe; 83. Ball bearing; 9. Debris removal mechanism; 91. Slide rod; 92. Brush; 93. Telescopic spring; 94. Driving gear; 95. Hydraulic chamber; 96. Piston rod A; 97. Gear rod; 98. Piston rod B; 10. Shaking-off mechanism; 101. Rack; 102. Rotating rod; 103. Driven gear; 104. Eccentric ring; 105. Air pressure chamber; 106. Air bag; 107. Piston rod C. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1 - Figure 10One embodiment of the present invention is: a split DC charging pile for electric vehicles, comprising a pile body 1, a ventilation hole 2 is opened on the side of the pile body 1, a closed door 3 is provided at the front end of the pile body 1, a charging gun 5 is provided on the side of the pile body 1 away from the ventilation hole 2, a mounting bracket 6 is fixedly installed inside the pile body 1 by bolts, and a circulating cooling mechanism 7 is provided at the bottom of the interior of the pile body 1; the circulating cooling mechanism 7 comprises a base 71, a filter box 77, a diverter box 711 and a coolant tank 721, the base 71 is fixedly connected to the bottom of the interior of the pile body 1, a blower 72 and a reduction box 73 are provided on the top of the base 71, a rotating shaft 74 is passed through and rotatably connected to the front end of the reduction box 73, a cam 75 is fixedly connected to the front end of the rotating shaft 74, and an air inlet pipe 76 is provided on the side of the blower 72. The filter box 77 passes through and is fixedly connected to the side of the pile body 1 near the ventilation hole 2. The rear end of the blower 72 is provided with an air supply pipe 710. The diverter box 711 is fixedly installed inside the pile body 1 by bolts. The top of the diverter box 711 passes through and is fixedly connected with an air outlet 712. The top of the reduction box 73 is fixedly connected with a pressure cylinder 715. A return spring 716 is provided inside the pressure cylinder 715. The interior of the pressure cylinder 715 is slidably connected to a piston rod D717 through the return spring 716 piston. The bottom of the piston rod D717 is fixedly connected with a push plate 718. The side of the pressure cylinder 715 passes through and is fixedly connected with a liquid inlet pipe 719. The top of the pressure cylinder 715 passes through and is fixedly connected with a liquid delivery pipe 720. The coolant tank 721 is fixedly connected to the inner side of the pile body 1. On the wall, a display panel 4 is provided at the front end of the closed door 3, a debris removal mechanism 9 and a shaking-off mechanism 10 are provided on the side of the pile body 1 near the ventilation hole 2, a reduction gear set is provided inside the reduction box 73, and the rotating shaft 74 is connected to the rotating shaft of the blower 72 through the reduction gear set inside the reduction box 73. A filter cotton plate 78 is inserted into the interior of the filter box 77, and a dustproof net 79 is provided inside the filter box 77. A circulation pipe 713 is fixedly connected to the interior of the diverter box 711, and one end of the infusion pipe 720 away from the pressure cylinder 715 is fixedly connected to the circulation pipe 713. The end of the circulation pipe 713 away from the infusion pipe 720 is fixedly connected to the return pipe 714, and the end of the return pipe 714 away from the circulation pipe 713 passes through and is fixedly connected to the coolant tank 721, and the inlet pipe 719 is far away One end away from the pressure cylinder 715 is penetrated by and fixedly connected to the coolant tank 721. The push plate 718 is provided with a wear reduction component 8 inside. The wear reduction component 8 includes an oil storage chamber 81. The oil storage chamber 81 is opened inside the push plate 718. The top of the oil storage chamber 81 is penetrated by and fixedly connected to an oil filling pipe 82. The bottom of the oil storage chamber 81 is provided with a ball 83. The cam 75 is close to the bottom of the push plate 718. The number of balls 83 is set to five groups. When the cam 75 rotates, it will be squeezed with the ball 83 at the bottom of the push plate 718, thereby driving the push plate 718 to move upward. When the blower 72 is turned on, its rotating shaft will drive the rotating shaft 74 to rotate through the reduction gear set, and the rotating shaft 74 rotates at a slow speed. The end of the air inlet pipe 76 away from the blower 72 is penetrated by and fixedly connected to the filter box 77.The end of the air supply pipe 710 away from the blower 72 passes through and is fixedly connected to the diverter box 711. Both the liquid inlet pipe 719 and the liquid delivery pipe 720 are equipped with one-way valves. When the blower 72 is turned on, it draws in external air through the air inlet pipe 76 and the filter box 77, and delivers it to the diverter box 711 through the air supply pipe 710. When negative pressure is formed in the pressure cylinder 715, coolant in the coolant tank 721 is drawn in through the liquid inlet pipe 719. When the coolant in the pressure cylinder 715 is squeezed, the coolant is delivered to the circulation pipe 713 through the liquid delivery pipe 720.

[0023] During use, the charging module is installed on the mounting bracket 6, the wire of the charging gun 5 is connected to the charging module, and the charging gun 5 is powered by the charging module. When the charging gun 5 charges the car, the charging module is running, and the blower 72 is turned on. The blower 72 will extract external air through the air inlet pipe 76 and the filter box 77 and transport it to the diversion box 711 through the air duct 710, and the dustproof net 79 will prevent dust from entering. The external air enters the diversion box 711 and is discharged through the air outlet 712, so as to take away the heat generated by the charging module during the charging process, and finally be discharged from the ventilation hole 2. The filter cotton plate 78 performs secondary filtration. At the same time, the rotating shaft of the blower 72 will drive the rotating shaft 74 to rotate through the reduction gear set in the reduction box 73, and the rotating speed of the rotating shaft 74 is relatively slow. The rotation of the rotating shaft 74 will drive the cam 75 to rotate. When the cam 75 rotates, it will squeeze the ball 83 at the bottom of the push plate 718, thereby driving The push plate 718 moves upward, and the rotation of the ball 83 will bring out the lubricating oil in the oil storage chamber 81 to lubricate the cam 75 and reduce wear. The upward movement of the push plate 718 will drive the piston rod D717 to move upward, the return spring 716 is compressed, and the upward movement of the piston rod D717 will squeeze the coolant in the pressure cylinder 715 so that it is transported to the circulation pipe 713 through the infusion pipe 720. The excess coolant in the circulation pipe 713 returns to the coolant tank 721 through the return pipe 714. When the cam 75 leaves the ball 83 at the bottom of the push plate 718, the return spring 716 rebounds and drives the piston rod D717 and the push plate 718 to move downward and restore. At this time, the negative pressure formed in the pressure cylinder 715 will absorb the coolant in the coolant tank 721 through the liquid inlet pipe 719, thereby forming a circulation. The coolant flows in the circulation pipe 713, thereby reducing the temperature of the air in the diversion box 711, making the overall heat dissipation effect better.

[0024] See also Figure 1 - Figure 10On the basis of the above embodiment, in another embodiment of the present invention, the impurity removal mechanism 9 includes a slide rod 91, a driving gear 94 and a hydraulic chamber 95. The slide rod 91 is fixedly connected to the side of the pile body 1 close to the ventilation hole 2. A telescopic spring 93 is provided on the surface of the slide rod 91. The surface of the slide rod 91 is slidably connected to a row brush 92 through the telescopic spring 93. The driving gear 94 is fixedly connected to the surface of the rotating shaft 74. The hydraulic chamber 95 passes through and is fixedly connected to the side of the pile body 1 close to the ventilation hole 2. The piston inside one end of the hydraulic chamber 95 is slidably connected to a piston rod A96. The piston rod A96 is away from the hydraulic chamber. One end of the tank 95 is fixedly connected to a gear rod 97, and the driving gear 94 is an incomplete gear, and the teeth on the driving gear 94 are initially meshed with the teeth on the gear rod 97. When the driving gear 94 rotates and its upper teeth mesh with the teeth on the gear rod 97, the gear rod 97 is driven to move to the left. The other end of the hydraulic tank 95 is internally connected to a piston rod B98 for sliding movement. The end of the piston rod B98 away from the hydraulic tank 95 is fixedly connected to the top of the row brush 92. The bristles of the row brush 92 are in contact with the dustproof net 79. When the piston rod B98 moves downward, it drives the row brush 92 to move downward. 2 moves downward to remove debris from the dust screen 79. The shaking-off mechanism 10 includes a rack 101, a rotating rod 102, and an air pressure chamber 105. The rack 101 is fixedly connected to the brush 92. The rotating rod 102 is rotatably connected to the side of the pile body 1 near the ventilation hole 2. The surface of the rotating rod 102 is fixedly connected to a driven gear 103. The end of the rotating rod 102 away from the pile body 1 is fixedly connected to an eccentric ring 104. The air pressure chamber 105 is fixedly connected to the side of the pile body 1 near the ventilation hole 2. An air bag 106 is provided at one end of the air pressure chamber 105. The piston inside the other end of the air pressure chamber 105 is slidably connected. There is a piston rod C107, the teeth on the rack 101 are engaged with the teeth on the driven gear 103, the airbag 106 is in an expanded state in the initial state, and the end of the airbag 106 away from the air pressure chamber 105 is close to the eccentric ring 104, and the end of the piston rod C107 away from the air pressure chamber 105 is close to the dustproof net 79. When the rack 101 moves downward, it will drive the driven gear 103 to rotate through the engagement between the teeth. When the eccentric ring 104 rotates with the rotating rod 102, it will repeatedly squeeze the airbag 106. When the piston rod C107 moves outside the air pressure chamber 105, it will hit the dustproof net 79.

[0025] When in use, when the rotating shaft 74 rotates, it also drives the driving gear 94 to rotate. When the driving gear 94 rotates and the teeth on it mesh with the teeth on the gear rod 97, it drives the gear rod 97 to move to the left. The gear rod 97 moves to the left and drives the piston rod A96 to move to the left. The piston rod A96 moves to the left, and the hydraulic pressure in the hydraulic chamber 95 drives the piston rod B98 to move downward. The downward movement of the piston rod B98 drives the row brush 92 to move downward, and the telescopic spring 93 is compressed. When the driving gear 94 rotates to the toothless part and disengages from the gear rod 97, the telescopic spring 93 rebounds and drives the row brush 92 and the piston rod B98 to move upward and restore. The hydraulic pressure in the hydraulic chamber 95 drives the piston rod A96 and the gear rod 97 to move to the right and restore. The repeated downward movement of the row brush 92 can scrape off the debris adsorbed on the dustproof net 79 to prevent the debris adsorbed on the dustproof net 79 from affecting the external air The air enters, and the brush 92 moves downward repeatedly, and the rack 101 drives the driven gear 103 to rotate through the meshing between the teeth when following the brush 92 downward. The rotation of the driven gear 103 drives the rotating rod 102 to rotate, and the rotation of the rotating rod 102 drives the eccentric ring 104 to rotate. The rotation of the eccentric ring 104 will repeatedly squeeze the airbag 106. The squeezed airbag 106 will enter the air pressure chamber 105 to push the piston rod C107 to move. When the piston rod C107 moves out of the air pressure chamber 105, it will hit the dustproof net 79. When the airbag 106 rebounds, the air pressure in the air pressure chamber 105 returns to the airbag 106. At this time, the piston rod C107 moves back to the air pressure chamber 105, and the piston rod C107 repeatedly hits the dustproof net 79 to generate shaking to shake off debris, thereby cooperating with the brush 92 to clean the debris on the dustproof net 79.

[0026] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A split DC charging pile for electric vehicles, comprising a pile body (1), characterized in that: A ventilation hole (2) is provided on the side of the pile body (1), a closed door (3) is provided at the front end of the pile body (1), a charging gun (5) is provided on the side of the pile body (1) away from the ventilation hole (2), a mounting frame (6) is fixedly installed inside the pile body (1) by bolts, and a circulating cooling mechanism (7) is provided at the bottom of the interior of the pile body (1); The circulating cooling mechanism (7) comprises a base (71), a filter box (77), a diverter box (711) and a coolant tank (721), wherein the base (71) is fixedly connected to the inner bottom of the pile body (1), a blower (72) and a reduction box (73) are provided on the top of the base (71), a rotating shaft (74) is passed through and rotatably connected to the front end of the reduction box (73), a cam (75) is fixedly connected to the front end of the rotating shaft (74), an air inlet pipe (76) is provided on the side of the blower (72), the filter box (77) passes through and is fixedly connected to the side of the pile body (1) near the ventilation hole (2), an air delivery pipe (710) is provided at the rear end of the blower (72), and the diverter box (711) is fixed by bolts. The cooling liquid tank (721) is installed inside the pile body (1), the top of the diversion box (711) is penetrated by and fixedly connected to the air outlet (712), the top of the reduction box (73) is fixedly connected to the pressure cylinder (715), the interior of the pressure cylinder (715) is provided with a return spring (716), the interior of the pressure cylinder (715) is connected to a piston rod D (717) through the return spring (716) and the bottom of the piston rod D (717) is fixedly connected to a push plate (718), the side of the pressure cylinder (715) is penetrated by and fixedly connected to the liquid inlet pipe (719), the top of the pressure cylinder (715) is penetrated by and fixedly connected to the liquid infusion pipe (720), and the cooling liquid tank (721) is fixedly connected to the inner wall of the pile body (1).

2. The electric vehicle split DC charging pile according to claim 1, characterized in that: The front end of the closed door (3) is provided with a display panel (4), the side of the pile body (1) close to the ventilation hole (2) is provided with a debris removal mechanism (9) and a shaking mechanism (10), the interior of the reduction box (73) is provided with a reduction gear set, the rotating shaft (74) is connected to the rotating shaft of the blower (72) through the reduction gear set inside the reduction box (73), the interior of the filter box (77) is plugged with a filter cotton plate (78), the interior of the filter box (77) is provided with a dustproof net (79), and the interior of the diversion box (711) is fixedly connected with a circulation The end of the liquid infusion tube (720) away from the pressure cylinder (715) is fixedly connected to the circulation tube (713), the end of the circulation tube (713) away from the liquid infusion tube (720) is fixedly connected to the return tube (714), the end of the return tube (714) away from the circulation tube (713) passes through and is fixedly connected to the coolant tank (721), the end of the liquid inlet tube (719) away from the pressure cylinder (715) passes through and is fixedly connected to the coolant tank (721), and a wear reduction component (8) is provided inside the push plate (718).

3. The electric vehicle split DC charging pile according to claim 2, characterized in that: One end of the air inlet pipe (76) away from the blower (72) passes through and is fixedly connected to the filter box (77), and one end of the air delivery pipe (710) away from the blower (72) passes through and is fixedly connected to the diversion box (711). Both the liquid inlet pipe (719) and the liquid delivery pipe (720) are provided with a one-way valve.

4. The electric vehicle split DC charging pile according to claim 3, characterized in that: The wear reduction component (8) includes an oil storage chamber (81), the oil storage chamber (81) is opened inside the push plate (718), an oil filling pipe (82) passes through and is fixedly connected to the top of the oil storage chamber (81), and a ball (83) is provided at the bottom of the oil storage chamber (81).

5. The electric vehicle split DC charging pile according to claim 4, characterized in that: The cam (75) is close to the bottom of the push plate (718), and the number of the balls (83) is set to five groups.

6. The electric vehicle split DC charging pile according to claim 5, characterized in that: The impurity removal mechanism (9) comprises a slide rod (91), a driving gear (94) and a hydraulic chamber (95); the slide rod (91) is fixedly connected to a side of the pile body (1) close to the ventilation hole (2); a telescopic spring (93) is provided on the surface of the slide rod (91); a row brush (92) is slidably connected to the surface of the slide rod (91) via the telescopic spring (93); the driving gear (94) is fixedly connected to the surface of the rotating shaft (74); the hydraulic chamber (95) passes through and is fixedly connected to a side of the pile body (1) close to the ventilation hole (2); a piston at one end of the hydraulic chamber (95) is slidably connected to a piston rod A (96); an end of the piston rod A (96) away from the hydraulic chamber (95) is fixedly connected to a gear rod (97); and a piston at the other end of the hydraulic chamber (95) is slidably connected to a piston rod B (98).

7. The electric vehicle split DC charging pile according to claim 6, characterized in that: The driving gear (94) is an incomplete gear, and the teeth on the driving gear (94) are initially engaged with the teeth on the gear rod (97).

8. The electric vehicle split DC charging pile according to claim 7, characterized in that: One end of the piston rod B (98) away from the hydraulic chamber (95) is fixedly connected to the top of the row brush (92), and the bristles of the row brush (92) are in contact with the dustproof net (79).

9. The electric vehicle split DC charging station according to claim 8, characterized in that: The shaking-off mechanism (10) comprises a rack (101), a rotating rod (102) and an air pressure chamber (105); the rack (101) is fixedly connected to the row brush (92); the rotating rod (102) is rotatably connected to a side of the pile body (1) close to the ventilation hole (2); a driven gear (103) is fixedly connected to the surface of the rotating rod (102); an eccentric ring (104) is fixedly connected to one end of the rotating rod (102) away from the pile body (1); the air pressure chamber (105) is fixedly connected to a side of the pile body (1) close to the ventilation hole (2); an air bag (106) is provided at one end of the air pressure chamber (105); and a piston rod C (107) is slidably connected to an internal piston of the other end of the air pressure chamber (105).

10. The electric vehicle split DC charging pile according to claim 9, characterized in that: The teeth on the rack (101) are meshed with the teeth on the driven gear (103), the airbag (106) is in an expanded state in the initial state, and the end of the airbag (106) away from the air pressure chamber (105) is close to the eccentric ring (104), and the end of the piston rod C (107) away from the air pressure chamber (105) is close to the dustproof net (79).

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