New energy automobile outdoor charging pile with rainy day electric leakage detection function

Abstract

The new energy automobile outdoor charging pile with the rainy day electric leakage detection function comprises a box body, supporting legs, a charging wire, a charging gun, a charging module, a controller and a spraying mechanism, a first motor is arranged at the bottom of the box body and is in drive connection with a disc, the disc is connected with a rotating plate through a first electric push rod, and a vertical plate is arranged on the top face of the rotating plate; the two sides of the vertical plate are connected with a first shell and a second shell through a second electric push rod and a third electric push rod respectively, the first shell is provided with an analog interface, the second shell is provided with a moving mechanism, the bottom of the moving mechanism is provided with an arc-shaped plate, the inner side wall of the second shell is provided with a cylinder, the cylinder is sleeved with a sealing ring, and the end of the charging gun is provided with an annular groove. A sealing ring and an air bag are arranged in the annular groove, the air bag is connected with an air pump, and the charging wire is sleeved with an induction coil. The spraying mechanism is arranged to simulate the rainy day environment, the induction coil is used for detecting the leakage current of the charging line, the sealing ring is replaced when the leakage current exceeds a preset value, the sealing performance is improved, and electric leakage accidents during charging in rainy days are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to an outdoor charging pile for new energy vehicles with a leakage detection function in rainy days. Background Art

[0002] As an important infrastructure for new energy vehicles, new energy vehicle charging piles play a key role in providing power supply for electric vehicles. They are like "gas stations" for electric vehicles, ensuring that electric vehicles can continue to operate. Charging piles are mainly divided into two categories: AC charging piles and DC charging piles. The former is suitable for long-term charging occasions, such as home or company parking lots; the latter is more suitable for places that need fast charging, such as highway service areas or commercial areas, due to its high power and fast charging characteristics.

[0003] The working principle of the charging pile mainly involves power transmission and battery charging technology. Electric vehicles are connected to the charging pile through the charging interface. The charging pile will automatically adjust the output current and voltage according to the battery power, charging requirements, and the status of the vehicle and battery to ensure the efficiency and safety of the charging process. For outdoor charging piles, the working conditions are more complicated. Outdoor charging piles need to withstand various severe weather conditions, such as high temperature, severe cold, wind and snow, etc., especially in rainy environments, outdoor charging piles are easily affected, which puts higher requirements on the performance and stability of outdoor charging piles.

[0004] However, the charging guns of existing outdoor charging piles for new energy vehicles are generally sealed with sealing rings. When charging on rainy days, the sealing rings are used to prevent the intrusion of rainwater. However, due to the constant changes in outdoor temperature, the sealing rings are prone to performance degradation after long-term use, resulting in a decrease in sealing performance. When the charging gun is inserted into the charging port of the new energy vehicle, rainwater may enter the charging gun, which may not only pose a risk of leakage but also damage the charging gun. Summary of the invention

[0005] In view of this, the present invention proposes an outdoor charging pile for new energy vehicles with a leakage detection function in rainy days. The charging pile is provided with a spray mechanism to simulate the rainy day environment, and uses an induction coil to detect the leakage current of the charging line. When the leakage current exceeds a preset value, the sealing ring is replaced to improve the sealing performance, avoid leakage accidents when charging in rainy days, and maintain a good working condition.

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

[0007] A new energy vehicle outdoor charging pile with a leakage detection function in rainy days comprises a box body, a supporting leg, a charging line, a charging gun, a charging module, a controller and a spray mechanism, wherein the supporting leg is arranged at the bottom of the box body, a charging module is arranged in the box body, the charging module is connected to the charging gun through the charging line, the charging gun is arranged on the side wall of the box body, a first motor is arranged at the bottom of the box body, an output shaft of which passes through the box body and is driven by a disc, a first electric push rod is arranged opposite to the top surface of the disc, a rotating plate is arranged at the telescopic end of the first electric push rod, a vertical plate is arranged in the middle of the top surface of the rotating plate, a second electric push rod and a third electric push rod are arranged opposite to each other on both sides of the vertical plate, the telescopic end of the second electric push rod is connected to a shell body one, an analog interface is arranged on the side surface of the shell body one, the telescopic end of the third electric push rod is connected to a shell body two, and an opening is arranged on one side of the shell body two , the shell body is provided with a moving mechanism at the top and bottom, a fourth electric push rod is provided at the bottom of the moving mechanism, the telescopic end of the fourth electric push rod is connected to an arc plate, the inner side wall of the shell body is provided with a cylinder, and a plurality of sealing rings are provided on the cylinder at intervals, one end of the charging gun is provided with a groove, a connector is provided in the groove, an annular groove is provided at the end of the charging gun, a sealing ring is provided in the annular groove, an airbag is provided at the bottom of the annular groove, the airbag is connected to an air pump through the main air pipe, and the air pump is provided on the side of the other end of the charging gun, a spray mechanism is provided on the top of the box body for simulating a rainy day environment, and the charging cable sleeve is provided with an induction coil, and the controller is provided inside the charging module and is electrically connected to the first motor, the moving mechanism, the air pump, the first electric push rod, the second electric push rod, the third electric push rod, the fourth electric push rod, the spray mechanism and the induction coil.

[0008] Preferably, the spray mechanism includes a water pump, a water pipe, a nozzle and a mechanical arm. The water pump is arranged at the top of the box body, and the water pump is connected to the nozzle through a water pipe. The mechanical arm is arranged at the top of the box body, and the nozzle is connected to the end of the mechanical arm. The nozzle can spray clean water on the charging plug from all directions.

[0009] Preferably, the robotic arm includes a driving mechanism, a fifth electric push rod, a gear ring, a gear, a fourth motor, a support plate, a support plate, a rotating shaft, a fifth motor and a sixth electric push rod. The driving mechanism is arranged at the top of the box body, the fifth electric push rod is arranged at the bottom of the driving mechanism, and a support plate is rotatably provided at the telescopic end thereof. The gear ring is sleeved on the telescopic end of the fifth electric push rod, the fourth motor is arranged on the top surface of the support plate, and its output shaft is driven and connected to the gear, and the gear is meshed with the gear ring. The support plate is relatively arranged at the bottom of the support plate, and the rotating shaft is rotatably arranged in the middle of the support plate, one end of which is rotatably connected to the support plate, and the other end passes through the support plate and is driven and connected to the fifth motor. The fifth motor is arranged on the side of the support plate, and a sixth electric push rod is arranged on the rotating shaft, and the telescopic end of the sixth electric push rod is connected to the nozzle.

[0010] Preferably, the driving mechanism includes a second motor, a first screw rod, a U-shaped moving block, a third motor, a second screw rod and a moving block 1. The first screw rod is rotatably arranged at the top of the box body, one end of which is connected to the inner wall of the box body, the other end passes through the box body and is driven to the second motor, the second motor is arranged on the side of the box body, the U-shaped moving block is arranged on the first screw rod, the second screw rod is rotatably arranged at the bottom of the U-shaped moving block, one end of which is connected to the U-shaped moving block, the other end passes through the U-shaped moving block and is driven to the third motor, the third motor is arranged on the side of the U-shaped moving block, and the moving block 1 is arranged on the second screw rod.

[0011] Preferably, the moving mechanism includes a sixth motor, a third screw rod and a moving block 2. The third screw rod is rotatably arranged in the shell 2, one end of which is rotatably connected to the shell 2, and the other end passes through the shell 2 and is driven to the sixth motor. The sixth motor is arranged on the side of the shell 2, and the moving block 2 is provided on the screw rod.

[0012] Preferably, it also includes an air distribution pipe, a first solenoid valve and a pressure sensor. The main air pipe is connected to the bottom of the groove through the air distribution pipe. The air distribution pipe is provided with a first solenoid valve. The pressure sensor is provided at the bottom of the groove. The first solenoid valve and the pressure sensor are electrically connected to the controller.

[0013] Preferably, it also includes an exhaust channel, a second solenoid valve and a temperature sensor. The charging gun is provided with an exhaust channel, one end of the exhaust channel is connected to the groove, and the other end is connected to the outside of the charging gun. The second solenoid valve is arranged on the exhaust channel, and the temperature sensor is arranged at the bottom of the groove.

[0014] Preferably, the sealing rings are sleeved on the cylinder at intervals, and the distance between the two sealing rings is greater than the width of the arc plate.

[0015] Preferably, the diameter of the cylinder is the same as the diameter of the end of the charging gun.

[0016] A leakage detection method for an outdoor charging pile of a new energy vehicle with a leakage detection function in rainy days comprises the following steps:

[0017] S1. The charging gun is fixed to the side wall of the box, and the first motor is started to drive the rotating plate to rotate so that the housing 1 is aligned with the charging gun;

[0018] S2, start the second electric push rod to drive the housing to fit on the end of the charging gun, so that the analog interface is connected to the connector;

[0019] S3, start the air pump, the air pump inflates the airbag, and the inflation of the airbag makes the sealing ring and the housing abut against each other;

[0020] S4, start the spray mechanism to simulate the rainy day environment;

[0021] S5, starting the charging module to perform a simulated charging operation;

[0022] S6, starting the induction coil to detect the induction current of the neutral line and the live line of the charging line;

[0023] S7, the difference between the induced current of the neutral line and the live line is less than the preset value, which is qualified; otherwise, it is judged as leakage.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Set up a spray mechanism to simulate the rainy day environment, use the induction coil to detect the leakage current of the charging line, and replace the sealing ring when the leakage current exceeds the preset value to improve the sealing performance of the charging gun and avoid leakage accidents when the charging gun is charging on rainy days. Set multiple sealing rings on the cylinder as spares, which can be replaced multiple times to avoid leakage accidents when the charging gun is charging on rainy days, so that the charging pile can maintain a good working condition for a long time;

[0026] 2. When the charging gun is inserted into the charging port of the new energy vehicle, the controller opens the first solenoid valve, and the air pump pushes the pressurized air from the main air pipe through the air distribution pipe into the groove at the end of the charging gun. The pressure sensor detects the air pressure in real time to keep the pressure positive, thereby preventing rainwater from entering the groove and improving the rainproof performance of the charging gun;

[0027] 3. When the temperature sensor detects that the temperature of the charging gun is high, the second solenoid valve is activated to allow air to continuously flow out of the exhaust channel and take out the heat, thereby achieving the effect of cooling the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0032] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0033] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0034] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at EE in the middle;

[0035] Figure numerals: 1, box body; 2, supporting legs; 3, water pump; 4, water pipe; 5, charging gun; 6, charging line; 7, first motor; 8, disc; 9, first electric push rod; 10, rotating plate; 11, vertical plate; 12, second electric push rod; 13, third electric push rod; 14, shell one; 15, analog interface; 16, shell two; 17, fourth electric push rod; 18, arc plate; 19, cylinder; 20, controller; 21, sealing ring; 22, groove; 23, connector; 24, ring groove; 25, airbag; 26, main air pipe; 27, air pump; 28, air distribution pipe; 29, first Solenoid valve; 30, exhaust channel; 31, second solenoid valve; 32, pressure sensor; 33, nozzle; 34, second motor; 35, first screw rod; 36, U-shaped moving block; 37, third motor; 38, second screw rod; 39, moving block one; 40, fifth electric push rod; 41, support plate; 42, gear ring; 43, gear; 44, fourth motor; 45, support plate; 46, rotating shaft; 47, sixth electric push rod; 48, fifth motor; 49, charging module; 50, sixth motor; 51, third screw rod; 52, moving block two; 53, induction coil; 54, temperature sensor. DETAILED DESCRIPTION

[0036] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0037] See also Figures 1 to 6The present invention provides an outdoor charging pile for new energy vehicles with a leakage detection function in rainy days, comprising a box body 1, a support leg 2, a charging line 6, a charging gun 5, a charging module 49, a controller 20 and a spray mechanism, wherein the support leg 2 is arranged at the bottom of the box body 1, a charging module 49 is arranged in the box body 1, and the charging module 49 is connected to the charging gun 5 through the charging line 6, and the charging gun 5 is arranged on the side wall of the box body 1, and a first motor 7 is arranged at the bottom of the box body 1, and the first motor 7 adopts a stepping motor model, and its output shaft passes through the box body 1 The disc 8 is connected to the drive, and the top surface of the disc 8 is oppositely provided with a first electric push rod 9, the telescopic end of the first electric push rod 9 is provided with a rotating plate 10, the middle of the top surface of the rotating plate 10 is provided with a vertical plate 11, and the two sides of the vertical plate 11 are oppositely provided with a second electric push rod 12 and a third electric push rod 13, the telescopic end of the second electric push rod 12 is connected to a shell 14, and the side of the shell 14 is provided with an analog interface 15, and the analog interface 15 has the same structure as the charging port of the new energy vehicle, and the telescopic end of the third electric push rod 13 is connected to the shell 1 6. An opening is provided on one side of the housing 16. A moving mechanism is provided on the upper and lower sides of the housing 16. A fourth electric push rod 17 is provided at the bottom of the moving mechanism. The telescopic end of the fourth electric push rod 17 is connected to an arc plate 18. A cylinder 19 is provided on the inner wall of the housing 16. A plurality of sealing rings 21 are sleeved on the cylinder 19 at intervals. A groove 22 is provided at one end of the charging gun 5. A connecting body 23 is provided in the groove 22. An annular groove 24 is provided at the end of the charging gun 5. A sealing ring 21 is provided in the annular groove 24. The annular groove 24 is provided with a sealing ring 21. An airbag 25 is provided at the bottom of the groove 24, and the airbag 25 is connected to an air pump 27 through a main air pipe 26. The air pump 27 is provided on the other end side of the charging gun 5. A spray mechanism is provided on the top of the box body 1 to simulate a rainy day environment. The charging cable 6 is provided with an induction coil 53. The controller 20 is provided inside the charging module 49 and is electrically connected to the first motor 7, the moving mechanism, the air pump 27, the first electric push rod 9, the second electric push rod 12, the third electric push rod 13, the fourth electric push rod 17, the spray mechanism and the induction coil 53.

[0038] The present invention provides an outdoor charging pile for new energy vehicles with a leakage detection function in rainy days. Due to the constant change of outdoor temperature, the sealing ring 21 on the charging gun 5 is prone to aging after long-term use, resulting in a decrease in sealing performance. In order to ensure that the charging gun 5 can be charged normally in a rainy environment, the present invention is provided with a spray mechanism, which can spray clean water on the connection of the charging gun 5 to simulate the charging condition in rainy days, start the first motor 7, and the rotation of the first motor 7 drives the disc 8 to rotate. The rotation of the disc 8 drives the first electric push rod 9 and the rotating plate 10 to rotate, so that the analog interface 15 on the shell 14 faces the side of the charging gun 5, and then start the first electric push rod 9. The telescopic end of the first electric push rod 9 extends to drive the rotating plate 10 to lift, so that the axis of the analog interface 15 coincides with the axis of the charging gun 5, and then start the second electric push rod 12. The extension of the telescopic end of the second electric push rod 12 drives the shell 14 to cover the end of the charging gun 5, completing the docking operation between the connector 23 on the charging gun 5 and the analog interface 15; then start the spray mechanism to simulate the charging condition in rainy days; then start the charging module 49 to charge, and at the same time start the induction coil 53 to monitor the charging line 6. During normal charging, the currents of the live wire (L line) and the neutral wire (N line) are equal and opposite in direction. The current enters the analog interface 15 from the live wire, passes through the load of the analog interface 15, and then returns to the power supply through the neutral wire. However, when the charging gun 5 or the analog interface 15 leaks, part of the current will leak out of the charging gun 5 and no longer return to the power supply through the neutral wire. The current on the live wire will be greater than the current on the neutral wire. The difference in the induced current between the neutral wire and the live wire is less than the preset value, which is qualified, otherwise it is judged as leakage.

[0039] When the charging gun 5 is detected to be leaking, the second electric push rod 12 is started, and the telescopic end of the second electric push rod 12 is shortened to drive the shell 14 to leave the end of the charging gun 5, completing the separation operation of the charging gun 5 and the analog interface 15; then the first motor 7 is started, and the first motor 7 rotates 180°, so that the axis of the shell 2 16 coincides with the axis of the charging gun 5, and the third electric push rod 13 is started, and the telescopic end of the third electric push rod 13 is shortened to drive the shell 2 16 to be inserted into the end of the charging gun 5, and then the moving mechanism is started, and the moving mechanism drives the fourth electric push rod 17 to move to the side of the sealing ring 21, and the fourth electric push rod 17 is started, and the telescopic end of the fourth electric push rod 17 is extended to drive the arc plate 18 to abut against the side of the end of the charging gun 5, and then the air pump 27 is started, and the air pump 27 rushes air into the airbag 25, and the airbag 25 pushes the sealing ring 21 out of the annular groove 24, and then drives the moving mechanism to move to the side of the sealing ring 21. The moving mechanism is driven by the moving mechanism. The arc plate 18 pushes the sealing ring 21 away from the charging gun 5. Then the third electric push rod 13 is started to continue to push the shell 2 16 toward the charging gun 5, so that the side of the cylinder 19 and the side of the charging gun 5 abut against each other, completing the docking operation of the charging gun 5; the moving mechanism is started to drive the fourth electric push rod 17 to move. The fourth electric push rod 17 drives the arc plate 18 to move above the gap of the sealing ring 21, and then the fourth electric push rod 17 is started. The telescopic end of the fourth electric push rod 17 extends to drive the arc plate 18 to descend and abut against the side of the cylinder 19. Then the moving mechanism is started to drive the fourth electric push rod 17 to move toward one side of the charging gun 5. The side of the arc plate 18 abuts against the side of the sealing ring 21 and drives the sealing ring 21 to slide from the cylinder 19 to the annular groove 24 of the charging gun 5, completing the replacement operation of the sealing ring 21. According to the above operation, simulate the leakage detection in rainy days. After the leakage current detected is less than the preset value, the charging gun 5 can continue to be used normally. A plurality of sealing rings 21 are provided on the cylinder 19 as backup, and can be replaced multiple times to avoid leakage accidents when the charging gun is charged on rainy days, so that the charging pile can maintain a good working condition for a long time.

[0040] Preferably, the spray mechanism includes a water pump 3, a water pipe 4, a nozzle 33 and a mechanical arm. The water pump 3 is arranged at the top of the box body 1, and the water pump 3 is connected to the nozzle 33 through the water pipe 4. The mechanical arm is arranged at the top of the box body 1, and the nozzle 33 is connected to the end of the mechanical arm. The nozzle 33 can spray clean water on the charging plug from all directions.

[0041] When the spray mechanism is working, the water pump 3 is started first, and the water pump 3 flows clean water into the nozzle 33 through the water pipe 4 and sprays it out. The nozzle 33 is connected to the end of the mechanical arm. Under the drive of the mechanical arm, the nozzle 33 can spray clean water on the charging plug from all directions.

[0042] Preferably, the robotic arm includes a driving mechanism, a fifth electric push rod 40, a gear ring 42, a gear 43, a fourth motor 44, a support plate 41, a support plate 45, a rotating shaft 46, a fifth motor 48 and a sixth electric push rod 47. The driving mechanism is arranged at the top of the box body 1, the fifth electric push rod 40 is arranged at the bottom of the driving mechanism, and its telescopic end is rotatably provided with a support plate 41, the gear ring 42 is sleeved on the telescopic end of the fifth electric push rod 40, the fourth motor 44 is arranged on the top surface of the support plate 41, and its output shaft is driven and connected to the gear 43, and the gear 43 is meshed with the gear ring 42, the support plate 45 is relatively arranged at the bottom of the support plate 41, the rotating shaft 46 is rotatably arranged in the middle of the support plate 45, one end of which is rotatably connected to the support plate 45, and the other end passes through the support plate 45 and is driven and connected to the fifth motor 48, the fifth motor 48 is arranged on the side of the support plate 45, and the sixth electric push rod 47 is arranged on the rotating shaft 46, and the telescopic end of the sixth electric push rod 47 is connected to the nozzle 33.

[0043] The mechanical arm is used to drive the nozzle 33 to move, so that the nozzle 33 can spray the connecting end of the charging gun 5 from all directions, thereby improving the effect of simulating the rainy day environment. When the mechanical arm is working, the fifth electric push rod 40 is first started, and the telescopic end of the fifth electric push rod 40 is extended to drive the support plate 41 to drop to a suitable height, and then the fourth motor 44 is started, and the fourth motor 44 rotates to drive the gear 43 to rotate, and the gear 43 and the gear ring 42 are engaged, thereby driving the gear ring 42 to rotate, and the gear ring 42 is fixed to the telescopic end of the fifth electric push rod 40, thereby driving the support plate 41 to rotate, and at the same time starting the fifth motor 48, the fifth motor 48 rotates to drive the rotating shaft 46 to rotate, and the rotating shaft 46 rotates to drive the sixth electric push rod 47 to rotate, so that the nozzle 33 can be sprayed from different angles, thereby improving the effect of simulating rainy days.

[0044] Preferably, the driving mechanism includes a second motor 34, a first screw rod 35, a U-shaped moving block 36, a third motor 37, a second screw rod 38 and a moving block 39. The first screw rod 35 is rotatably arranged at the top of the box body 1, one end of which is connected to the inner wall of the box body 1, and the other end passes through the box body 1 and is driven to the second motor 34. The second motor 34 is arranged on the side of the box body 1. The U-shaped moving block 36 is arranged on the first screw rod 35. The second screw rod 38 is rotatably arranged at the bottom of the U-shaped moving block 36, one end of which is connected to the U-shaped moving block 36, and the other end passes through the U-shaped moving block 36 and is driven to the third motor 37. The third motor 37 is arranged on the side of the U-shaped moving block 36. The moving block 39 is arranged on the second screw rod 38.

[0045] The driving mechanism is used to drive the fifth electric push rod 40 to move in a plane. When the spray mechanism is working, the second motor 34 is started first. The second motor 34 rotates to drive the first screw rod 35 to rotate. The first screw rod 35 rotates to drive the U-shaped moving block 36 to move along the axis of the first screw rod 35. At the same time, the third motor 37 is started. The third motor 37 rotates to drive the second screw rod 38 to rotate. The second screw rod 38 rotates to drive the moving block 39 to move along the axis of the second screw rod 38. The fifth electric push rod 40 is arranged on the bottom surface of the moving block 39, so that the fifth electric push rod 40 can be moved to any position in the plane, which is conducive to simulating the rainy day effect.

[0046] Preferably, the moving mechanism includes a sixth motor 50, a third screw rod 51 and a moving block 52. The third screw rod 51 is rotatably disposed in the shell 16, one end of which is rotatably connected to the shell 16, and the other end passes through the shell 16 and is driven to the sixth motor 50. The sixth motor 50 is disposed on the side of the shell 16, and the moving block 52 is provided on the screw rod.

[0047] The moving mechanism is used to drive the movement of the fourth electric push rod 17. When the sealing ring 21 needs to be replaced, the moving mechanism is started. First, the sixth motor 50 is started. The rotation of the sixth motor 50 drives the third screw rod 51 to rotate. The moving block 2 52 is screwed to the third screw rod 51. The moving block 2 52 moves along the axis of the third screw rod 51, thereby driving the movement of the fourth electric push rod 17.

[0048] Preferably, it also includes an air distribution pipe 28, a first solenoid valve 29 and a pressure sensor 32. The main air pipe 26 is connected to the bottom of the groove 22 through the air distribution pipe 28. The air distribution pipe 28 is provided with a first solenoid valve 29. The pressure sensor 32 is provided at the bottom of the groove 22. The first solenoid valve 29 and the pressure sensor 32 are electrically connected to the controller 20.

[0049] When the charging gun 5 is inserted into the charging port of the new energy vehicle, the controller 20 opens the first solenoid valve 29, and the air pump 27 draws pressurized air from the main air pipe 26 through the air branch pipe 28 into the groove 22 at the end of the charging gun 5. The pressure sensor 32 detects the air pressure in real time to keep the pressure positive, thereby preventing rainwater from entering the groove 22 and improving the rainproof performance of the charging gun 5.

[0050] Preferably, it also includes an exhaust channel 30, a second solenoid valve 31 and a temperature sensor 54. The exhaust channel 30 is provided on the charging gun 5, one end of the exhaust channel 30 is connected to the groove 22, and the other end is connected to the outside of the charging gun 5, the second solenoid valve 31 is provided on the exhaust channel 30, and the temperature sensor 54 is provided at the bottom of the groove 22.

[0051] During the charging process, the charging gun will heat up. When the temperature sensor 54 detects that the temperature of the charging gun 5 is high, the controller 20 starts the second solenoid valve 31, so that the air in the groove 22 continuously flows out from the exhaust channel 30 and takes out the heat, thereby achieving the effect of cooling the charging gun 5.

[0052] Preferably, the sealing rings 21 are sleeved on the cylinder 19 at intervals, and the distance between the two sealing rings 21 is greater than the width of the arc plate 18 .

[0053] When the sealing ring 21 needs to be replaced, after completing the docking operation between the cylinder 19 and the charging gun 5, start the moving mechanism to drive the fourth electric push rod 17 to move, and the fourth electric push rod 17 drives the arc plate 18 to move above the interval of the sealing ring 21, and then start the fourth electric push rod 17, the telescopic end of the fourth electric push rod 17 extends to drive the arc plate 18 to descend and abut against the side of the cylinder 19, and then start the moving mechanism to drive the fourth electric push rod 17 to move toward the side of the charging gun 5, the side of the arc plate 18 abuts against the side of the sealing ring 21 and drives the sealing ring 21 to slide from the cylinder 19 to the annular groove 24 of the charging gun 5, completing the replacement operation of the sealing ring 21.

[0054] Preferably, the diameter of the cylinder 19 is the same as the diameter of the end of the charging gun 5 .

[0055] When the sealing ring 21 needs to be replaced, start the first motor 7. The rotation of the first motor 7 drives the disc 8 to rotate. The rotation of the disc 8 drives the first electric push rod 9 and the rotating plate 10 to rotate, so that the cylinder 19 on the shell 2 16 faces the side of the charging gun 5. Then start the first electric push rod 9. The telescopic end of the first electric push rod 9 extends to drive the rotating plate 10 to lift, so that the axis of the cylinder 19 coincides with the axis of the charging gun 5. Then start the third electric push rod 13. The telescopic end of the third electric push rod 13 extends to drive the shell 2 16 to cover the end of the charging gun 5, completing the docking operation between the cylinder 19 and the charging gun 5. The diameter of the cylinder 19 is the same as the diameter of the end of the charging gun 5, so that the sealing ring 21 can slide from the cylinder 19 to the end of the charging gun 5 and enter the annular groove 24.

[0056] A method for detecting leakage of an outdoor charging pile of a new energy vehicle with a leakage detection function in rainy days comprises the following steps:

[0057] S1, the charging gun 5 is fixed to the side wall of the box body 1, and the first motor 7 is started to drive the rotating plate 10 to rotate so that the housing 14 is aligned with the charging gun 5;

[0058] S2, start the second electric push rod 12 to drive the housing 14 to be sleeved on the end of the charging gun 5, so that the analog interface 15 is connected to the connector 23;

[0059] S3, start the air pump 27, the air pump 27 inflates the air bag 25, and the air bag 25 is inflated to make the sealing ring 21 and the housing 14 abut against each other;

[0060] S4, start the spray mechanism to simulate the rainy day environment;

[0061] S5, starting the charging module 49 to perform a simulated charging operation;

[0062] S6, starting the induction coil 53 to detect the induction current of the neutral line and the live line of the charging line 6;

[0063] S7, the difference between the induced current of the neutral line and the live line is less than the preset value, which is qualified; otherwise, it is judged as leakage.

[0064] The present invention provides a leakage detection method for an outdoor charging pile of a new energy vehicle with a leakage detection function in rainy days. The first motor 7 is started. The rotation of the first motor 7 drives the disc 8 to rotate. The rotation of the disc 8 drives the first electric push rod 9 and the rotating plate 10 to rotate, so that the analog interface 15 on the shell 14 faces the side of the charging gun 5. Then the first electric push rod 9 is started. The telescopic end of the first electric push rod 9 is extended to drive the rotating plate 10 to rise, so that the axis of the analog interface 15 coincides with the axis of the charging gun 5. Then the second electric push rod 12 is started. The telescopic end of the second electric push rod 12 is extended to drive the shell 14 to cover the end of the charging gun 5, and the docking operation between the charging gun 5 and the analog interface 15 is completed; the air pump 27 is started. The air pump 27 inflates the airbag 25. After the airbag 25 is inflated, the volume increases and pushes the sealing ring 21 to abut against the shell 14; then the charging module 49 is started to perform a simulated charging operation, and the induction coil 53 is started at the same time to monitor the charging gun 5. The difference in the induced current between the neutral line and the live line is less than the preset value, which is qualified, otherwise it is judged as leakage. The charging pile is tested for leakage on simulated rainy days to avoid leakage accidents when charging on rainy days, so that the charging pile can maintain good working condition.

[0065] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A new energy vehicle outdoor charging pile with a rainy day leakage detection function, characterized in that: It includes a box body, a supporting leg, a charging line, a charging gun, a charging module, a controller and a spray mechanism, the supporting leg is arranged at the bottom of the box body, the charging module is arranged in the box body, the charging module is connected to the charging gun through the charging line, the charging gun is arranged on the side wall of the box body, the bottom of the box body is provided with a first motor, its output shaft passes through the box body and is driven by a disc, a first electric push rod is arranged opposite to the top surface of the disc, a rotating plate is arranged at the telescopic end of the first electric push rod, a vertical plate is arranged in the middle of the top surface of the rotating plate, a second electric push rod and a third electric push rod are arranged opposite to each other on both sides of the vertical plate, the telescopic end of the second electric push rod is connected to shell one, an analog interface is arranged on the side of shell one, the telescopic end of the third electric push rod is connected to shell two, one side of shell two is provided with an opening, and shell two is provided with a movable Mechanism, a fourth electric push rod is provided at the bottom of the moving mechanism, the telescopic end of the fourth electric push rod is connected to an arc plate, the two inner side walls of the shell are provided with a cylinder, and a plurality of sealing rings are provided on the cylinder at intervals, one end of the charging gun is provided with a groove, a connector is provided in the groove, an annular groove is provided at the end of the charging gun, a sealing ring is provided in the annular groove, an air bag is provided at the bottom of the annular groove, the air bag is connected to an air pump through a main air pipe, the air pump is provided at the other end side of the charging gun, a spray mechanism is provided at the top of the box body for simulating a rainy day environment, the charging cable sleeve is provided with an induction coil, and the controller is provided inside the charging module and is electrically connected to the first motor, the moving mechanism, the air pump, the first electric push rod, the second electric push rod, the third electric push rod, the fourth electric push rod, the spray mechanism and the induction coil.

2. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 1 is characterized in that: The spray mechanism includes a water pump, a water pipe, a nozzle and a mechanical arm. The water pump is arranged at the top of the box body, and the water pump is connected to the nozzle through a water pipe. The mechanical arm is arranged at the top of the box body, and the nozzle is connected to the end of the mechanical arm. The nozzle can spray clean water on the charging plug from all directions.

3. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 2 is characterized in that: The mechanical arm includes a driving mechanism, a fifth electric push rod, a gear ring, a gear, a fourth motor, a support plate, a support plate, a rotating shaft, a fifth motor and a sixth electric push rod. The driving mechanism is arranged at the top of the box body, the fifth electric push rod is arranged at the bottom of the driving mechanism, and a support plate is rotatably provided at the telescopic end thereof. The gear ring is sleeved on the telescopic end of the fifth electric push rod, the fourth motor is arranged on the top surface of the support plate, and its output shaft is driven and connected to the gear, and the gear is meshed with the gear ring. The support plate is relatively arranged at the bottom of the support plate, and the rotating shaft is rotatably arranged in the middle of the support plate, one end of which is rotatably connected to the support plate, and the other end passes through the support plate and is driven and connected to the fifth motor. The fifth motor is arranged on the side of the support plate, and a sixth electric push rod is arranged on the rotating shaft, and the telescopic end of the sixth electric push rod is connected to the nozzle.

4. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 3 is characterized in that: The driving mechanism includes a second motor, a first screw rod, a U-shaped moving block, a third motor, a second screw rod and a moving block 1. The first screw rod is rotatably arranged at the top of the box body, one end of which is connected to the inner wall of the box body, the other end passes through the box body and is driven to the second motor, the second motor is arranged on the side of the box body, the U-shaped moving block is arranged on the first screw rod, the second screw rod is rotatably arranged at the bottom of the U-shaped moving block, one end of which is connected to the U-shaped moving block, the other end passes through the U-shaped moving block and is driven to the third motor, the third motor is arranged on the side of the U-shaped moving block, and the moving block 1 is arranged on the second screw rod.

5. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 1 is characterized in that: The moving mechanism includes a sixth motor, a third screw rod and a moving block 2. The third screw rod is rotatably arranged in the shell 2, one end of which is rotatably connected to the shell 2, and the other end passes through the shell 2 and is driven to the sixth motor. The sixth motor is arranged on the side of the shell 2, and the moving block 2 is arranged on the screw rod.

6. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 1 is characterized in that: It also includes an air distribution pipe, a first solenoid valve and a pressure sensor. The main air pipe is connected to the bottom of the groove through the air distribution pipe. The air distribution pipe is provided with a first solenoid valve. The pressure sensor is provided at the bottom of the groove. The first solenoid valve and the pressure sensor are electrically connected to the controller.

7. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 1, characterized in that: It also includes an exhaust channel, a second solenoid valve and a temperature sensor. The charging gun is provided with an exhaust channel, one end of the exhaust channel is connected to the groove, and the other end is connected to the outside of the charging gun. The second solenoid valve is arranged on the exhaust channel, and the temperature sensor is arranged at the bottom of the groove.

8. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 1 is characterized in that: The sealing rings are sleeved on the cylinder at intervals, and the distance between the two sealing rings is greater than the width of the arc plate.

9. The outdoor charging pile for new energy vehicles with a leakage detection function in rainy days according to claim 1, characterized in that: The diameter of the cylinder is the same as the diameter of the end of the charging gun.

10. A leakage detection method for an outdoor charging pile of a new energy vehicle with a leakage detection function in rainy days using any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The charging gun is fixed to the side wall of the box, and the first motor is started to drive the rotating plate to rotate so that the housing 1 is aligned with the charging gun; S2, start the second electric push rod to drive the housing to fit on the end of the charging gun, so that the analog interface is connected to the connector; S3, start the air pump, the air pump inflates the airbag, and the inflation of the airbag makes the sealing ring and the housing abut against each other; S4, start the spray mechanism to simulate the rainy day environment; S5, starting the charging module to perform a simulated charging operation; S6, starting the induction coil to detect the induction current of the neutral line and the live line of the charging line; S7, the difference between the induced current of the neutral line and the live line is less than the preset value, which is qualified; otherwise, it is judged as leakage.

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