Electric vehicle alternating current charging pile for outdoor installation

Abstract

The invention discloses an electric vehicle alternating current charging pile for outdoor installation. The electric vehicle alternating current charging pile comprises an upper box body and a lower box body. A charging control module and a ground wire are arranged in the upper box body, and the ground wire penetrates to the ground from the lower box body. The side wall of the upper box body is provided with an air outlet, an air inlet and a water filling nozzle, the air outlet is provided with an exhaust fan, the air inlet is connected with an air inlet channel, and a condensation water-making mechanism is arranged in the air inlet channel. First and second water storage tanks are arranged in the box, the top of the first tank is connected with a first water inlet pipe, an electric valve is arranged on the pipe, and the top of the pipe is connected with a water receiving hopper for collecting condensate water; the second tank top is connected with the water filling nozzle through a second water inlet pipe. The upper parts of the two tanks are connected through a communicating pipe. An inlet of the flow pump is connected with the second tank bottom through a sewer pipe, and an outlet of the flow pump is connected with a drain pipe to the through hole of the lower tank body and is contacted with a ground wire. A first water level sensor is arranged on the side wall of the first tank; and a controller and an air temperature sensor are arranged in the upper box body. The AC charging pile can autonomously keep the joint of the ground wire and the ground wet for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to an AC charging pile for an electric vehicle for outdoor installation. Background Art

[0002] Electric vehicle AC charging pile is a device that provides charging services for electric vehicles, also known as slow charging. AC charging piles have a wide range of applications due to their simple structure, small size, low cost, and high safety. However, when AC charging piles are used outdoors, they will also face some problems, which may cause the AC charging piles to fail and become unusable.

[0003] Since the AC charging pile uses 220V single-phase power input or 380V three-phase power input, the AC charging pile must use a ground wire during installation. When installing outdoors, it is often encountered that the installation site does not have a pre-buried ground wire pipeline. When installing AC charging piles at these locations, the ground wire can often only be guided to the ground. When the environment is dry for a long time, the resistance of the ground wire of the AC charging pile and the ground contact section will increase. The internal inspection module of the AC charging pile will misjudge that the ground wire has failed, thereby locking the AC charging pile and making the AC charging pile unusable. Generally, a very small number of experienced users will find the connection between the ground wire and the ground, pour some water on it, and restart the charging pile to troubleshoot the problem, but most users are often unable to troubleshoot the problem on their own.

[0004] In view of this, in order to avoid the above-mentioned fault problems that frequently occur during the use of AC charging piles, an electric vehicle AC charging pile for outdoor installation is designed, which can autonomously keep the connection between the ground wire and the ground moist for a long time, thereby avoiding ground wire failure caused by dryness. Summary of the invention

[0005] The purpose of the present invention is to provide an AC charging pile for electric vehicles for outdoor installation to solve the problems described in the background technology.

[0006] The technical solution of the present invention is achieved in this way:

[0007] An AC charging pile for an electric vehicle installed outdoors comprises an upper box body and a lower box body fixedly arranged below the upper box body, wherein a charging control module for charging the electric vehicle is arranged in the upper box body, the charging control module is connected to a ground wire, a through hole is arranged in the bottom wall of the lower box body, the ground wire passes through the through hole and is connected to the ground, an exhaust port is also arranged in the side wall of the upper box body, an exhaust fan is arranged in the exhaust port, an air inlet and a water injection port are also arranged in the side wall of the upper box body opposite to the exhaust port, an air inlet duct connected to the air inlet is arranged in the upper box body, a condensation water making mechanism is arranged in the air inlet duct, a first water storage tank and a second water storage tank are fixedly arranged on the inner side wall of the upper box body, a first water inlet pipe is connected to the top of the first water storage tank, an electric valve is arranged on the first water inlet pipe, a water receiving bucket is connected to the top of the first water inlet pipe, and the water receiving bucket is used to receive condensed water discharged by the condensation water making mechanism The top of the second water storage tank is also connected to the water injection port through a second water inlet pipe, and the middle and upper parts of the side walls of the first water storage tank and the second water storage tank are also connected through a connecting pipe. A flow pump is also provided in the upper box body, and the inlet of the flow pump is also connected to the bottom of the second water storage tank through a downpipe. The outlet of the flow pump is also connected to a drain pipe, and the other end of the drain pipe extends to the through hole of the lower box body and is against the ground wire. A first water level sensor is also provided on the side wall of the first water storage tank, and the first water level sensor is higher than the connecting pipe. A second water level sensor is also provided on the side wall of the second water storage tank, and the second water level sensor is lower than the connecting pipe. A controller and an air temperature sensor are also provided in the upper box body, and the electric valve, the condensing water making mechanism, the first water level sensor, the second water level sensor, the air temperature sensor, the flow pump and the exhaust fan are all electrically connected to the controller.

[0008] When using the above solution, when the temperature sensor detects that the temperature in the upper box is greater than 1°C, the condensing water making mechanism, electric valve, and flow pump are all in operation. The operation mode is as follows:

[0009] When the charging pile is used for the first time, the installer adds clean water to the second water tank through the water injection port. When the clean water fills the second water tank to the height of the connecting pipe, it enters the first water tank through the connecting pipe. At this time, the electric valve is in a closed state. When the clean water in the water injection port overflows, the water injection is stopped. The controller controls the peristaltic pump to install the preset flow rate and the preset running time, and continuously and intermittently drains water into the drain pipe. The water flows through the drain pipe and flows to the ground wire, so that the contact part between the ground wire and the ground remains moist. When the water level in the second water storage tank drops to the second water level sensor, the condensation water making mechanism is started, and the exhaust fan is turned on to extract the air in the upper box body. Fresh air enters the air inlet under the action of negative pressure. When the fresh air passes through the air inlet, it reacts with the condensation water making mechanism to produce condensed water. The condensed water drips down and falls into the water receiving bucket. At this time, the electric valve is opened, and the condensed water flows into the first water storage tank through the first water inlet pipe, and enters the second water storage tank through the connecting pipe. When the water level reaches the first water level sensor in the first water storage tank, the condensation water making mechanism stops working and the electric valve is closed to prevent evaporation, so that the first water storage tank and the second water storage tank in the upper tank body always keep water, providing a water source for the continuous moistening of the ground wire. In the process of condensation water making, the fresh air entering the upper box body is not only cooled down, but also can cool the charging control module that generates heat due to work, but also can reduce the water vapor in the fresh air and keep the upper box body dry.

[0010] By setting up a first water storage tank and a second water storage tank and connecting them with a connecting pipe, dust contained in the air during the condensation water production process can be precipitated and filtered, and settled in the first water storage tank, thereby reducing the amount of dust entering the second water storage tank and preventing the drain pipe from being blocked by dust and losing its drainage function.

[0011] When the temperature sensor detects that the temperature in the upper box is greater than 1°C, the external air is basically below 0°C, and the liquid in the first water tank and the second water tank will begin to freeze. At this time, all components are in a stopped state.

[0012] The AC charging pile can autonomously keep the connection between the ground wire and the ground moist for a long time, thereby avoiding ground wire failure caused by dryness.

[0013] A further technical solution is that the air inlet duct includes an upper tube plate, a side tube plate and a vertical tube plate, the upper tube plate is fixedly mounted on the inner side wall of the upper box body and is arranged above the air inlet, there are two side tube plates, the side tube plates are fixedly mounted on the inner side wall of the upper box body and are arranged on the left and right sides of the air inlet, the top of the side tube plate is sealedly connected to the upper tube plate, the vertical tube plate is fixedly connected to the side tube plate and one end of the upper tube plate facing away from the air inlet, the left and right sides of the vertical tube plate are respectively sealedly connected to the two side tube plates, the top of the vertical tube plate is sealedly connected to the upper tube plate, the upper tube plate, the side tube plate, the vertical tube plate and the inner side wall of the upper box body together form an air inlet duct with an opening at the lower end, and the air inlet is arranged in the air inlet duct.

[0014] When using the above solution, by setting the upper tube plate, side tube plate and vertical tube plate in cooperation with the inner wall of the upper box body to form an air inlet with an opening at the lower end, the condensation water making mechanism is more convenient to arrange, to produce condensation water, and to collect condensation water.

[0015] A further technical solution is that the condensing water-making mechanism includes a cooling port opened on the side wall of the upper box body, the cooling port is arranged below the air inlet, a cooling fan is in the cooling port, the condensing water-making mechanism also includes a mounting pipe, a pipe opening at one end of the mounting pipe is sealed and connected to the cooling port, and a pipe opening at the other end of the mounting pipe is connected to the air inlet and points to the vertical tube plate, the condensing water-making mechanism also includes a first heat conduction plate fixedly arranged in the mounting pipe, a first fin is provided at one end of the first heat conduction plate facing the cooling port, a semiconductor refrigeration plate is attached to one end of the first heat conduction plate facing the vertical tube plate, a heating surface of the semiconductor refrigeration plate is thermally bonded and connected to the first heat conduction plate, a cooling surface of the semiconductor refrigeration plate faces the vertical tube plate and is thermally bonded and connected to a second heat conduction plate, a second fin is fixedly provided on one side of the second heat conduction plate facing the vertical tube plate, the second fin is arranged in the air inlet, a side of the second heat conduction plate facing the cooling block is sealed and connected to the pipe opening of the mounting pipe facing the vertical tube plate, and the cooling fan and the semiconductor refrigeration plate are both electrically connected to the controller.

[0016] When using the above solution, the cooling surface of the semiconductor refrigeration plate generates low temperature, which is conducted to the second fin through the second heat conduction plate. When the air in the air intake duct passes through the second fin, it is cooled and generates condensed water on the second fin. The condensed water slides down along the second fin and drips into the water receiving bucket. The high temperature generated by the heating surface of the semiconductor refrigeration plate is conducted to the first fin through the first heat conduction plate, and the first fin is forced to dissipate heat through the cooling fan, and the heat is discharged from the cooling port to the outside of the upper box.

[0017] A further technical solution is that a shaft seat is fixedly provided at the top of the air inlet, a rotating shaft is horizontally rotatably installed in the shaft seat, and a baffle for shielding the air inlet is fixedly provided below the rotating shaft.

[0018] When the above solution is used, by setting the baffle, when the exhaust fan is activated and air enters the air inlet, the baffle rotates inward under the action of wind force to open the air inlet. When the exhaust fan is not activated, the baffle blocks the air inlet to prevent dust from entering the upper box.

[0019] A further technical solution is that the heating surface of the semiconductor refrigeration plate is thermally connected to the first thermal conductive plate by thermal grease, and the cooling surface of the semiconductor refrigeration plate is thermally connected to the second thermal conductive plate by thermal grease.

[0020] When using the above solution, thermal grease can transfer the energy of the semiconductor cooling plate more efficiently.

[0021] A further technical solution is that the mounting tube is a rectangular tube, and the left and right outer side walls of the mounting tube are respectively fitted with the left and right side tube plates.

[0022] When the above solution is used, the cooperation between the mounting tube shape and the side tube plate can better guide all the air to pass through the second fin.

[0023] A further technical solution is that a detachable cover at the water inlet is provided with a water injection plug.

[0024] When the above solution is used, the water filling plug can prevent the liquid in the first water storage tank from evaporating, and can also prevent flying insects, dust, etc. from entering the first water storage tank.

[0025] A further technical solution is that the second fins arranged on the second heat conducting plate are arranged in an upward and downward extending direction.

[0026] When the above solution is used, the second fins extending up and down are more conducive to the flow of air and the orderly dripping of condensed water.

[0027] A further technical solution is that a mounting bracket is also provided on the inner box wall of the upper box body, and the flow pump is fixedly mounted on the mounting bracket.

[0028] When using the above solution, the mounting bracket is more conducive to the installation of the flow pump.

[0029] A further technical solution is that the bottom of the second water storage tank is bucket-shaped, and the downpipe is connected to the lowest point of the bottom of the second water storage tank.

[0030] When the above solution is used, the bottom of the second water storage tank is bucket-shaped, which is more conducive to water utilization.

[0031] The beneficial effects of the present invention are:

[0032] 1. Autonomously keep the ground wire moist: Through intelligent control of condensation water-making mechanism and electric valve and other components, ensure that the contact part between the ground wire and the ground is continuously moist, effectively avoid the failure of the ground wire due to drying, and improve the safety and stability of the charging pile.

[0033] 2. Double water storage and filtration system: The first water tank and the second water tank are set up and connected through a connecting pipe. This not only realizes the recycling of water resources, but also effectively precipitates and filters dust mixed in the air, reduces the risk of dust entering the second water tank and the drain pipe, and avoids blockage problems.

[0034] 3. Effective cooling and dehumidification: During the condensation water production process, the fresh air entering the upper box not only provides the necessary conditions for water production, but also cools the charging control module, lowers the temperature inside the upper box, reduces the water vapor in the air, and maintains a dry environment in the upper box.

[0035] 4. Intelligent shielding of air inlet: By setting the baffle, the air inlet can be opened and closed intelligently. When the exhaust fan is activated, the baffle automatically opens the air inlet; when the exhaust fan stops, the baffle shields the air inlet, effectively preventing dust from entering the upper box, improving the cleanliness and maintenance convenience of the upper box.

[0036] 5. Optimized fin design: The second fin design extending up and down is not only conducive to the flow of air and improves the condensation efficiency, but also ensures the orderly dripping of condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is an external view of the present invention;

[0038] Figure 2 is an internal view of the present invention;

[0039] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0040] Figure 4 for Figure 2 Partial view from the middle C direction;

[0041] Figure 5 for Figure 2 Partial view from the middle B direction;

[0042] Figure 6 for Figure 5 Partial cross-sectional view at point D in the middle (vertical tube plate is hidden);

[0043] Figure 7 for Figure 6 A partial cross-sectional view of (the second heat conduction plate and the second fin are hidden);

[0044] Figure 8 for Figure 5 Top view of point D in the middle (upper tube plate is hidden).

[0045] In the figure, 1, upper box, 2, lower box, 3, exhaust port, 4, exhaust fan, 5, ground wire, 6, drain pipe, 7, through hole, 8, water bucket, 9, first water inlet pipe, 10, electric valve, 11, first water storage tank, 12, mounting bracket, 13, flow pump, 14, air inlet, 15, shaft seat, 16, rotating shaft, 17, baffle, 18, upper tube plate, 19, side tube plate, 20, vertical tube plate, 21, air inlet, 22, cooling port, 2 3. Cooling fan, 24. Mounting pipe, 25. First heat conduction plate, 26. First fin, 27. Semiconductor refrigeration plate, 28. Thermal grease, 29. Second heat conduction plate, 30. Second fin, 31. Water inlet, 32. Water filling plug, 33. Connecting pipe, 34. Second water inlet pipe, 35. Second water storage tank, 36. First water level sensor, 37. Second water level sensor, 38. Drain pipe, 39. Controller, 40. Air temperature sensor. DETAILED DESCRIPTION

[0046] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0047] See also Figures 1 to 8 , an AC charging pile for electric vehicles for outdoor installation, comprising an upper box body 1 and a lower box body 2 fixedly arranged below the upper box body 1. In outdoor installation, since there is no place to hang and install the upper box body 1, in order to prevent the upper box body 1 from being submerged by waterlogging, the purpose of setting the lower box body 2 is to raise the horizontal height of the upper box body 1. The lower box body 2 in the present invention does not specifically refer to a box structure, but generally refers to a support part with a supporting function and including or not including an internal space. The technical personnel in this field shall also regard the use of installation structures such as support columns and support frames according to the content of this solution as equivalent to the structure of the lower box body 2.

[0048] The upper box 1 is provided with a charging control module for charging the electric vehicle, and the charging control module is connected to a ground wire 5. It should be noted that the charging control module here includes but is not limited to a charging control module composed of components such as an AC contactor, a smart meter, a lightning arrester, a single-phase circuit breaker, a terminal block, an auxiliary power supply, a main control module, and a relay module. Those skilled in the art can fully implement the charging control module described in the present invention according to the main charging structure of a commonly used AC charging pile, and no further description of the charging control module is given here.

[0049] The upper box 1 is also provided with a controller 39 and an air temperature sensor 40. The controller 39 is a STM32 single chip microcomputer or a SMART200 PLC controller 39. The temperature sensor is electrically connected to the controller 39.

[0050] A through hole 7 is formed on the bottom wall of the lower box body 2, and the ground wire 5 passes through the through hole 7 to connect to the ground.

[0051] An exhaust port 3 is also provided in the side wall of the upper box body 1, and an exhaust fan 4 is provided in the exhaust port 3, and the exhaust fan 4 is electrically connected to the controller 39. An air inlet 14 and a water injection port 31 are also provided in the side wall of the upper box body 1 opposite to the exhaust port 3, and an air inlet 21 connected to the air inlet 14 is provided in the upper box body 1, and a condensing water making mechanism is provided in the air inlet 21.

[0052] Specifically, the air inlet 21 includes a rectangular upper tube plate 18, two rectangular side tube plates 19 and a rectangular vertical tube plate 20. The upper tube plate 18 is fixedly mounted on the inner side wall of the upper box body 1 and is horizontally arranged above the air inlet 14. The two side tube plates 19 are vertically fixedly mounted on the inner side wall of the upper box body 1 and are arranged on the left and right sides of the air inlet 14. The top of the side tube plate 19 is sealed and connected to the upper tube plate 18. The vertical tube plate 20 is fixedly connected to the side tube plate 19 and one end of the upper tube plate 18 away from the air inlet 14. The left and right sides of the vertical tube plate 20 are respectively sealed and connected to the two side tube plates 19. The top of the vertical tube plate 20 is sealed and connected to the upper tube plate 18. The upper tube plate 18, the side tube plate 19, the vertical tube plate 20 and the inner side wall of the upper box body 1 together form a rectangular air inlet 21 with an open lower end. The air inlet 14 is arranged in the air inlet 21.

[0053] Preferably, a shaft seat 15 is fixedly provided on the top of the air inlet 14 , a rotating shaft 16 is horizontally rotatably installed in the shaft seat 15 , and a baffle 17 for shielding the air inlet 14 is fixedly provided below the rotating shaft 16 .

[0054] Specifically, the condensing water making mechanism includes a cooling port 22 opened on the side wall of the upper box body 1, the cooling port 22 is arranged below the air inlet 14, a cooling fan 23 is arranged in the cooling port 22, and the cooling fan 23 is electrically connected to the controller 39. The condensing water making mechanism also includes a mounting pipe 24, the mounting pipe 24 is a rectangular pipe, and the left and right outer side walls of the mounting pipe 24 are respectively fitted with the left and right side tube plates 19. The pipe opening at one end of the mounting pipe 24 is sealed and connected to the cooling port 22, and the pipe opening at the other end of the mounting pipe 24 is connected to the air inlet 21 and points to the vertical tube plate 20. The condensing water making mechanism also includes a first heat conducting plate 25 fixedly arranged in the mounting pipe 24, the first heat conducting plate 25 is an aluminum alloy plate, and a first fin 26 is arranged at one end of the first heat conducting plate 25 facing the cooling port 22, the first fin 26 is made of aluminum alloy, and there is no requirement for the extension direction of the first fin 26. A semiconductor cooling sheet 27 is attached to one end of the first thermal conductive plate 25 facing the vertical tube plate 20, and the heating surface of the semiconductor cooling sheet 27 is thermally connected to the first thermal conductive plate 25 by thermal grease 28. A hole is provided on the side wall of the mounting tube 24 for the wires of the semiconductor cooling sheet 27 to pass through, and a hole is also provided on the side tube plate 19 for the wires of the semiconductor cooling sheet 27 to pass through, and the semiconductor cooling sheet 27 is electrically connected to the controller 39. The cooling surface of the semiconductor cooling sheet 27 faces the vertical tube plate 20 and is thermally connected to the second thermal conductive plate 29 by thermal grease 28. The second thermal conductive plate 29 is an aluminum alloy plate. A second fin 30 is fixed to one side of the second thermal conductive plate 29 facing the vertical tube plate 20. The second fin 30 is made of aluminum alloy. The second fin 30 is arranged in the air inlet duct 21, and the second fin 30 is arranged in an upward and downward extending direction. The second heat conducting plate 29 is sealedly connected to the pipe opening of the mounting pipe 24 facing the vertical tube plate 20 on one side facing the cooling block. The cooling fan 23 and the semiconductor refrigeration plate 27 are both electrically connected to the controller 39 .

[0055] The inner wall of the upper box body 1 is also fixed with a first water storage tank 11 and a second water storage tank 35. The top of the first water storage tank 11 is connected to a first water inlet pipe 9, and the first water inlet pipe 9 is provided with an electric valve 10, which is electrically connected to the controller 39. The top of the first water inlet pipe 9 is connected to a water receiving bucket 8, which is used to receive condensed water discharged from the condensation water making mechanism.

[0056] The top of the second water storage tank 35 is also connected to the water injection port 31 through a second water inlet pipe 34 , and a detachable cover at the water injection port 31 is provided with a water injection plug 32 .

[0057] The upper and middle parts of the side walls of the first water storage tank 11 and the second water storage tank 35 are also connected through a straight connecting pipe 33 .

[0058] A mounting bracket 12 is also provided on the inner side wall of the upper box body 1 , and a flow pump 13 is also provided on the mounting bracket 12 . Preferably, the flow pump 13 is a peristaltic pump. The flow pump 13 is electrically connected to the controller 39 .

[0059] The inlet of the flow pump 13 is also connected to the bottom of the second water storage tank 35 through the downpipe 38. Preferably, the bottom of the second water storage tank 35 is bucket-shaped, and the downpipe 38 is connected to the lowest point of the bottom of the second water storage tank 35.

[0060] The outlet of the flow pump 13 is also connected to a drain pipe 6 , and the other end of the drain pipe 6 extends to the through hole 7 of the lower box body 2 and abuts against the ground wire 5 .

[0061] A first water level sensor 36 is further provided on the side wall of the first water storage tank 11 , and the first water level sensor 36 is higher than the connecting pipe 33 . A second water level sensor 37 is further provided on the side wall of the second water storage tank 35 , and the second water level sensor 37 is lower than the connecting pipe 33 .

[0062] The first water level sensor 36 and the second water level sensor 37 are both electrically connected to the controller 39 .

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An AC charging pile for electric vehicles for outdoor installation, comprising an upper box body and a lower box body fixedly arranged below the upper box body, wherein a charging control module for charging the electric vehicle is arranged in the upper box body, the charging control module is connected to a ground wire, and a through hole is opened in the bottom wall of the lower box body, and the ground wire passes through the through hole and is connected to the ground, characterized in that: An exhaust port is also provided in the side wall of the upper box body, an exhaust fan is provided in the exhaust port, an air inlet and a water injection port are also provided in the side wall of the upper box body opposite to the exhaust port, an air inlet duct connected to the air inlet is provided in the upper box body, a condensing water making mechanism is provided in the air inlet duct, a first water storage tank and a second water storage tank are also fixedly provided on the inner side wall of the upper box body, a first water inlet pipe is connected to the top of the first water storage tank, an electric valve is provided on the first water inlet pipe, a water receiving bucket is connected to the top of the first water inlet pipe, the water receiving bucket is used to receive condensed water discharged by the condensing water making mechanism, the top of the second water storage tank is also connected to the water injection port through a second water inlet pipe, and the middle and upper parts of the side walls of the first water storage tank and the second water storage tank are also connected through a connecting pipe A flow pump is also provided in the upper box body, and the inlet of the flow pump is also connected to the bottom of the second water storage tank through the downpipe. The outlet of the flow pump is also connected to a drain pipe, and the other end of the drain pipe extends to the through hole of the lower box body and touches the ground wire. A first water level sensor is also provided on the side wall of the first water storage tank, and the first water level sensor is higher than the connecting pipe. A second water level sensor is also provided on the side wall of the second water storage tank, and the second water level sensor is lower than the connecting pipe. A controller and an air temperature sensor are also provided in the upper box body, and the electric valve, the condensing water making mechanism, the first water level sensor, the second water level sensor, the air temperature sensor, the flow pump and the exhaust fan are all electrically connected to the controller.

2. The AC charging pile for electric vehicles for outdoor installation according to claim 1, characterized in that: The air inlet duct includes an upper tube plate, a side tube plate and a vertical tube plate. The upper tube plate is fixedly arranged on the inner side wall of the upper box body and is arranged above the air inlet. There are two side tube plates. The side tube plates are fixedly arranged on the inner side wall of the upper box body and are arranged on the left and right sides of the air inlet. The top of the side tube plate is sealed with the upper tube plate. The vertical tube plate is fixedly connected to the side tube plate and one end of the upper tube plate away from the air inlet. The left and right sides of the vertical tube plate are respectively sealed with the two side tube plates. The top of the vertical tube plate is sealed with the upper tube plate. The upper tube plate, the side tube plate, the vertical tube plate and the inner side wall of the upper box body together form an air inlet duct with an opening at the lower end. The air inlet is arranged in the air inlet duct.

3. The AC charging pile for electric vehicles for outdoor installation according to claim 2, characterized in that: The condensing water making mechanism includes a cooling port opened on the side wall of the upper box body, the cooling port is arranged below the air inlet, a cooling fan is in the cooling port, the condensing water making mechanism also includes a mounting pipe, a pipe opening at one end of the mounting pipe is sealed and connected to the cooling port, and a pipe opening at the other end of the mounting pipe is connected to the air inlet and points to the vertical tube plate. The condensing water making mechanism also includes a first heat conduction plate fixedly arranged in the mounting pipe, a first fin is arranged at one end of the first heat conduction plate facing the cooling port, a semiconductor refrigeration plate is attached to one end of the first heat conduction plate facing the vertical tube plate, a heating surface of the semiconductor refrigeration plate is thermally bonded and connected to the first heat conduction plate, a cooling surface of the semiconductor refrigeration plate faces the vertical tube plate and is thermally bonded and connected to a second heat conduction plate, a second fin is fixedly arranged on a side of the second heat conduction plate facing the vertical tube plate, the second fin is arranged in the air inlet, a side of the second heat conduction plate facing the cooling block is sealed and connected to the pipe opening of the mounting pipe facing the vertical tube plate, and the cooling fan and the semiconductor refrigeration plate are both electrically connected to the controller.

4. The AC charging pile for electric vehicles for outdoor installation according to claim 1, characterized in that: A shaft seat is fixedly arranged at the top of the air inlet, a rotating shaft is horizontally rotatably installed in the shaft seat, and a baffle for shielding the air inlet is fixedly arranged below the rotating shaft.

5. The AC charging pile for electric vehicles for outdoor installation according to claim 3, characterized in that: The heating surface of the semiconductor refrigeration plate is thermally connected to the first thermal conductive plate by thermal conductive silicone grease, and the cooling surface of the semiconductor refrigeration plate is thermally connected to the second thermal conductive plate by thermal conductive silicone grease.

6. The AC charging pile for electric vehicles for outdoor installation according to claim 3, characterized in that: The installation tube is a rectangular tube, and the left and right outer side walls of the installation tube are respectively fitted with the left and right side tube plates.

7. The AC charging pile for electric vehicles for outdoor installation according to claim 1, characterized in that: A detachable cover at the water filling port is provided with a water filling plug.

8. The AC charging pile for electric vehicles for outdoor installation according to claim 3, characterized in that: The second fins arranged on the second heat conducting plate are arranged in an up-and-down extending direction.

9. The AC charging pile for electric vehicles for outdoor installation according to claim 1, characterized in that: A mounting bracket is also provided on the inner box wall of the upper box body, and the flow pump is fixedly arranged on the mounting bracket.

10. The AC charging pile for electric vehicles for outdoor installation according to claim 1, characterized in that: The bottom of the second water storage tank is bucket-shaped, and the downpipe is connected to the lowest point of the bottom of the second water storage tank.

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