A stable portable vehicle ac charging plug

Abstract

The application provides a portable vehicle AC charging plug with stable use, comprising a plug shell, a PCB circuit board installed in the inside of the plug shell, an output end of the PCB circuit board connected with an input end of a charging head, and an input end of the PCB circuit board connected with an output end of a plug cable; an air inlet pipe connected with the lower side of a handle of the plug shell, the inside of the handle being a cavity structure and being communicated with the inside of the plug shell, one end of the air inlet pipe connected with an output end of a fan through a hose, the inside of the handle being provided with a heat conduction sheet, and one side of the air inlet pipe being provided with a driving mechanism; and an air outlet connected with the lower side of the plug shell, the air outlet comprising an upper end pipe and a lower end pipe. The portable vehicle AC charging plug with stable use integrates the PCB circuit board into the charging plug, is more convenient, and is integrally filled with glue in the charging plug, so that the protection performance is improved.

Description

Technical Field

[0001] This invention relates to the field of charging plugs, and more particularly to a stable portable vehicle AC charging plug. Background Technology

[0002] Electric vehicles are now widely used in our lives, and they are usually charged through charging stations.

[0003] The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles.

[0004] The existing AC Mode 2 charging plug PCB circuit board is assembled in a separate box, located between the three-prong plug and the plug. Because the box for assembling the PCB circuit board is assembled between the three-prong plug and the charging plug, it is inconvenient for users during charging. After charging, the recycling of AC Mode 2 is also complicated because of the box. In addition, the protective protection of the box occasionally fails due to assembly problems, which has a certain degree of uncertainty.

[0005] Therefore, it is necessary to provide a solution to the aforementioned technical problems using a stable portable vehicle AC charging plug. Summary of the Invention

[0006] This invention provides a stable portable vehicle AC charging plug, which solves the problems of existing AC Mode 2 charging plugs where the PCB circuit board is assembled in a separate box, located between the three-prong plug and the plug, making it inconvenient to use and complicated to recycle.

[0007] To solve the above-mentioned technical problems, the present invention provides a stable portable vehicle AC charging plug, comprising:

[0008] Plug housing;

[0009] A PCB circuit board is installed inside the housing. The output terminal of the PCB circuit board is connected to the input terminal of the charging head, and the input terminal of the PCB circuit board is connected to the output terminal of the plug cable.

[0010] An air inlet pipe is connected to the lower side of the handle of the tap housing. The handle has a hollow structure and communicates with the interior of the tap housing. One end of the air inlet pipe is connected to the output end of the fan through a flexible hose. A heat-conducting fin is provided inside the handle. A driving mechanism is provided on one side of the air inlet pipe.

[0011] An exhaust component is connected to the lower side of the tap housing. The exhaust component includes an upper pipe and a lower pipe, which are connected to form an exhaust pipe. A sealing ball is provided inside the exhaust pipe, and the sealing ball is connected to the driving mechanism via a connecting rope. A support ring is fixedly connected inside the lower pipe via a connecting rod.

[0012] Preferably, the driving mechanism includes a side cover, which is fixed to one side of the air inlet pipe and communicates with the interior of the air inlet pipe. A rotating shaft is fixedly connected inside the side cover, and a connecting sleeve is sleeved on the surface of the rotating shaft. A driving blade is fixedly connected to one side of the connecting sleeve, and one end of the driving blade extends into the interior of the air inlet pipe.

[0013] Preferably, a support block is fixedly connected to the surface of the connecting sleeve, and the support block is set at a 90-degree angle to the center of the driving blade and the rotating shaft. One end of the connecting rope is fixed to the support block, and the other end of the connecting rope is fixed to the top of the sealing ball. A torsion spring is sleeved on the surface of the rotating shaft, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring contacts the upper side of the driving blade.

[0014] Preferably, the diameter of the upper tube is smaller than that of the lower tube, and the inner surface of the upper tube is connected to a sealing ring with an inner arc surface for increasing the contact surface with the sealing ball.

[0015] Preferably, the PCB circuit board is installed inside the air-cooling mechanism, which is installed inside the plug housing. The air-cooling mechanism includes a spiral duct, and two fixed shafts are symmetrically fixedly connected to the bottom of the spiral duct. The spiral duct is installed on the tap housing through the fixed shafts.

[0016] Preferably, the spiral duct has an air outlet on its inner side, one end of the spiral duct is connected to the air inlet duct through a connecting pipe, and the upper and lower sides of the inner wall of the spiral duct are provided with sliding grooves.

[0017] Preferably, one end of the spiral duct is fixedly connected to an installation mechanism for mounting a PCB circuit board. The installation mechanism includes a fixing plate, a nut is fixedly connected to one side of the fixing plate, a positioning shaft is threaded onto the nut, a drive handle is fixedly connected to one end of the positioning shaft, and positioning blocks are symmetrically fixedly connected to the other end of the positioning shaft.

[0018] Preferably, an elastic element is fitted onto the surface of the positioning shaft and on one side of the fixing plate.

[0019] Preferably, a fixing head is fixedly connected to one side of the PCB circuit board. The fixing head includes a fixing cylinder. One end of the fixing cylinder has a cylindrical hole. Both sides of the inner wall of the cylindrical hole have rectangular grooves. One side of the inner wall of the rectangular groove has an arc groove. One side of the inner wall of the arc groove has a positioning groove.

[0020] Preferably, the two arc-shaped grooves are formed clockwise on one side of the two rectangular grooves.

[0021] Compared with related technologies, the portable vehicle AC charging plug provided by this invention, which offers stable use, has the following advantages:

[0022] This invention provides a stable portable vehicle AC charging plug that integrates a PCB circuit board into the charging plug for greater convenience. The entire charging plug is potted with glue to increase its protective performance. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a first embodiment of the portable vehicle AC charging plug that provides stable use according to the present invention;

[0024] Figure 2 for Figure 1 The diagram shows the internal structure.

[0025] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0026] Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown below;

[0027] Figure 5 A schematic diagram of the second embodiment of the portable vehicle AC charging plug provided by the present invention, which offers stable use.

[0028] Figure 6 for Figure 5 The diagram shows a partial structural schematic.

[0029] Figure 7 for Figure 5 The diagram shows the structure of the air-cooling mechanism.

[0030] Figure 8 for Figure 6 The diagram shows the structure of the installation mechanism.

[0031] Figure 9 for Figure 6 The diagram shows the fixed head structure.

[0032] Figure 10 for Figure 7 A cross-sectional view of the fixing head shown;

[0033] Figure 11 A schematic diagram of the structure of a third embodiment of the portable vehicle AC charging plug with stable use provided by the present invention;

[0034] Figure 12 for Figure 11 The diagram shows the structure of the rotary drive mechanism.

[0035] Numbering on the map:

[0036] 1. Plug housing, 2. PCB circuit board, 3. Charging head, 4. Plug cable, 5. Switch

[0037] 6. Exhaust unit; 61. Upper pipe; 62. Lower pipe; 63. Support ring; 64. Sealing ball.

[0038] 7. Air inlet duct,

[0039] 8. Drive mechanism; 81. Side cover; 82. Rotating shaft; 83. Support block; 84. Drive blade; 85. Connecting rope; 86. Torsion spring.

[0040] 9. Air-cooling mechanism; 91. Spiral duct; 92. Air outlet; 93. Fixed shaft; 94. Slide groove.

[0041] 10. Heat-conducting plate; 11. Connecting pipe.

[0042] 12. Mounting mechanism; 121. Fixing plate; 122. Nut; 123. Positioning shaft; 124. Drive handle; 125. Positioning block; 126. Elastic element.

[0043] 13. Fixed head; 131. Positioning cylinder; 132. Cylindrical hole; 133. Rectangular groove; 134. Arc-shaped groove; 135. Positioning groove.

[0044] 14. Pre-cooling mechanism; 141. Pre-cooling box; 142. Spiral pre-cooling pipe; 143. Extension plate; 144. Air outlet pipe; 145. Extension section; 146. Air inlet pipe; 147. Side box.

[0045] 15. Rotary drive mechanism; 151. Drive shaft; 152. Drive impeller; 153. Stirring blade; 154. Strip hole. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0047] First Embodiment

[0048] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4,in, Figure 1 A schematic diagram of the structure of a first embodiment of the portable vehicle AC charging plug that provides stable use according to the present invention; Figure 2 for Figure 1 The diagram shows the internal structure. Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown. It uses a stable portable vehicle AC charging plug, including:

[0049] Plug housing 1;

[0050] PCB circuit board 2 is installed inside the housing 1. The output end of the PCB circuit board 2 is connected to the input end of the charging head 3, and the input end of the PCB circuit board 2 is connected to the output end of the plug cable 4.

[0051] Air inlet pipe 7 is connected to the lower side of the handle of the tap housing 1. The handle has a hollow structure and communicates with the interior of the tap housing 1. One end of the air inlet pipe 7 is connected to the output end of the fan through a flexible hose. A heat-conducting plate 10 is provided inside the handle. A driving mechanism 8 is provided on one side of the air inlet pipe 7.

[0052] The hose is connected to the power line of the charging plug through multiple clips, making it more organized. The fan can be installed on the side close to the charging pile. By setting the heat conduction plate 10 inside the handle, the airflow can be pre-cooled to improve the heat dissipation effect. At the same time, the incoming airflow can be slowed down so that the airflow can enter the interior of the plug housing 1 more smoothly. The heat conduction plate 10 has multiple air guide holes and is preferably made of metal with good thermal conductivity. At the same time, multiple heat conduction plates 10 are evenly arranged.

[0053] The charging plug is filled with glue.

[0054] The exhaust component 6 is connected to the lower side of the tap housing 1. The exhaust component 6 includes an upper pipe 61 and a lower pipe 62. The upper pipe 61 and the lower pipe 62 are connected to form an exhaust pipe. A sealing ball 64 is provided inside the exhaust pipe. The sealing ball 64 is connected to the driving mechanism 8 through a connecting rope 16. A support ring 63 is fixedly connected inside the lower pipe 62 through a connecting rod.

[0055] The sealing ball 64 is made of foam material with a rubber sleeve bonded to its outer surface.

[0056] The driving mechanism 8 includes a side cover 81, which is fixed to one side of the air inlet pipe 7. The side cover 81 communicates with the interior of the air inlet pipe 7. A rotating shaft 82 is fixedly connected inside the side cover 81. A connecting sleeve is sleeved on the surface of the rotating shaft 82. A driving blade 84 is fixedly connected to one side of the connecting sleeve. One end of the driving blade 84 extends into the interior of the air inlet pipe 7.

[0057] The connecting sleeve can rotate along the rotating shaft 82.

[0058] A support block 83 is fixedly connected to the surface of the connecting sleeve. The support block 83 is set at a 90-degree angle to the center of the driving blade 84 and the rotating shaft 82. One end of the connecting rope 16 is fixed to the support block 83, and the other end of the connecting rope 16 is fixed to the top of the sealing ball 64. A torsion spring 85 is sleeved on the surface of the rotating shaft 82. One end of the torsion spring 85 is fixedly connected to the rotating shaft 82, and the other end of the torsion spring 85 contacts the upper side of the driving blade 84.

[0059] The connecting rope 16 passes through the side cover 81 and the upper tube 61, and the passage is sealed. Both the upper tube 61 and the side cover 81 are equipped with guide wheels to guide the connecting rope 16. The outside of the tap housing 1 is equipped with a limit ring to limit the connecting rope.

[0060] The diameter of the upper tube 61 is smaller than that of the lower tube 62, and a sealing ring with an arc-shaped inner side is connected to the inner surface of the upper tube 61 to increase the contact surface with the sealing ball 64.

[0061] By setting an arc-shaped sealing ring, the contact area with the sealing ball 64 can be increased, ensuring a sealing effect.

[0062] The working principle of the stable portable vehicle AC charging plug provided by this invention is as follows:

[0063] The charging head 3 uses a single-core wire to crimp the terminals first, and then assembles the crimped terminals into the charging head. During this process, the micro switch 5 is short-circuited with the PE phase sequence terminal as required. Then, the single-core wire of the charging head is soldered to the corresponding position on the PCB circuit board 2 according to the phase sequence. The tail wire sleeve is first assembled onto the three-prong plug cable 4, and then the tail three-prong plug wire is soldered to the corresponding position on the PCB circuit board 2 according to the phase sequence. The PCB circuit board 2 is placed in the corresponding position in the housing. The charging head is simultaneously assembled onto the limiting rib, and the micro switch 5 is assembled onto the corresponding limiting post. Then, the tail three-prong plug cable 4 is fixed with a wire clamp to prevent the cable from shifting later. Finally, the hook is assembled into the slot, and a matching spring is placed below the button.

[0064] The integrated ambient light is assembled into the corresponding slot and secured with small screws. Then, the left and right shells are joined together and secured with screws.

[0065] When the charging plug charges the vehicle, the fan is turned on, and the airflow generated by the fan is introduced into the air intake pipe 7 through the hose. The airflow then enters the handle of the plug housing 1 through the air intake pipe 7, and enters the interior of the plug housing 1 through the handle. It comes into contact with the electrical equipment such as the PCB circuit board 2 inside the housing 1, and performs air cooling to dissipate heat. Air cooling prevents the internal temperature of the charging plug from getting too high, ensuring the normal use of the charging plug and preventing overheating from affecting the normal operation of the charging taps or even causing problems, thus extending the service life of the charging plug.

[0066] When the airflow passes through the air inlet pipe 7, the airflow pushes the blade 84 to rotate upward, and at the same time, the blade 84 compresses the torsion spring, thereby driving the connecting sleeve to rotate. The connecting sleeve drives the support block 83 to rotate. At this time, the connecting rope 85 is relaxed. At this time, the sealing ball 64 moves downward under the action of gravity and the exhaust airflow. The sealing ball 64 falls onto the support ring and is located inside the lower end pipe 62. At this time, the airflow entering the plug housing 1 flows out through the gap between the lower end pipe 62 and the sealing ball 64.

[0067] When charging is finished and the fan is turned off, and no airflow enters, the torsion spring 86 drives the blade 84 to rotate downward to its original position, thereby driving the support block 83 to tighten the connecting rope 85. The connecting rope 85 drives the sealing ball 64 upward, so that its upper side contacts the sealing ring inside the lower end pipe 62 to seal the exhaust component 6, preventing dust, liquid, etc. from entering the interior of the plug housing 1.

[0068] Compared with related technologies, the portable vehicle AC charging plug provided by this invention, which offers stable use, has the following advantages:

[0069] Integrating the PCB circuit board into the charging plug makes it more convenient, and the entire charging plug is potted with glue to increase its protective performance.

[0070] By setting an air inlet pipe 7 at the handle of the plug housing 1, an external fan sends airflow through a hose to the air inlet pipe 7, thereby entering the entire interior of the tap housing 1. This cools down the electrical components inside the charging plug, preventing the charging plug from overheating during charging and improving the safety and lifespan of the charging plug.

[0071] Furthermore, during charging, the airflow can be driven by the mechanism 8, causing the sealing ball 64 inside the exhaust component 6 to fall onto the support ring 63 inside the lower end tube 62, thereby expelling the airflow that has entered the plug housing 1. When charging is finished, the air cooling is stopped. At this time, the mechanism 8 drives the sealing ball 64 to move upward and contact the sealing ring inside the lower end tube 62 to seal the exhaust component 6, preventing dust, liquids, etc. from entering the plug housing 1. It is convenient to use, and since the incoming airflow is used as power, no additional power equipment is needed, making it more energy-efficient and environmentally friendly.

[0072] Second Embodiment

[0073] Please refer to the following: Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 ,and Figure 10 Based on the first embodiment of this application which provides a stable portable vehicle AC charging plug, the second embodiment of this application proposes another stable portable vehicle AC charging plug.

[0074] Specifically, the second embodiment of this application provides a stable portable vehicle AC charging plug in that the PCB circuit board 2 is installed inside the air-cooling mechanism 9, the air-cooling mechanism 9 is installed inside the plug housing 1, the air-cooling mechanism 9 includes a spiral air duct 91, the bottom of the spiral air duct 91 is symmetrically fixedly connected to two fixed shafts 93, and the spiral air duct 91 is installed on the tap housing 1 through the fixed shafts 93.

[0075] The lower surface of the fixed shaft 93 is provided with an external thread, which can be used with a nut to fix it on the tap housing 1. The lower side of the plug housing 1 is provided with a corresponding fixing hole, and the cross-section of the spiral duct 91 is set as a rectangular surface.

[0076] The spiral duct 91 has an air outlet 92 on its inner side. One end of the spiral duct 91 is connected to the air inlet 7 through a connecting pipe 11. The upper and lower sides of the inner wall of the spiral duct 91 are provided with sliding grooves 94.

[0077] Multiple air outlets 92 are provided and evenly distributed on the inner side of the spiral air duct 91. By opening the sliding groove 94, the position of the PCB circuit board 2 during installation can be limited and guided, improving the convenience and stability of installation.

[0078] One end of the spiral duct 91 is fixedly connected to an installation mechanism 12 for mounting a PCB circuit board 1. The installation mechanism 12 includes a fixing plate 121. A nut 122 is fixedly connected to one side of the fixing plate 121. A positioning shaft 123 is threaded onto the nut 122. A drive handle 124 is fixedly connected to one end of the positioning shaft 123. A positioning block 125 is symmetrically fixedly connected to the other end of the positioning shaft 123.

[0079] The surface of the positioning shaft 123 is provided with threads that are compatible with the nut 122, and the opposite sides of the two positioning blocks 125 are both set as arc-shaped surfaces.

[0080] An elastic element is fitted onto the surface of the positioning shaft 123 and on one side of the fixing plate 121.

[0081] The elastic element is preferably a spring.

[0082] A fixing head 13 is fixedly connected to one side of the PCB circuit board 2. The fixing head 13 includes a fixing cylinder 131. A cylindrical hole 132 is opened at one end of the fixing cylinder 131. Rectangular grooves 133 are opened on both sides of the inner wall of the cylindrical hole 132. An arc groove 134 is opened on one side of the inner wall of the rectangular groove 133. A positioning groove 135 is opened on one side of the inner wall of the arc groove 134.

[0083] The diameter of the cylindrical hole 132 is the same as the diameter of the positioning shaft 123, and the positioning groove 135 is opened on the side of the arc groove 134 near the fixing plate 121.

[0084] The two arc-shaped grooves 134 are opened clockwise on one side of the two rectangular grooves 133.

[0085] By installing the PCB circuit board 2 inside the spiral duct 91, when the charging plug is charging, the airflow entering through the air inlet pipe 7 enters the spiral duct 91 through the connecting pipe 11, and then exits through the air outlet 92 located inside the spiral duct 91. Since the air outlet 92 is evenly and equidistantly arranged inside the spiral duct 91, the airflow can contact the PCB circuit board 2 at multiple angles, which greatly increases the contact area between the airflow and the PCB circuit board 2 and greatly improves the heat dissipation effect.

[0086] Furthermore, the installation and removal of both the PCB circuit board 2 and the spiral duct 91 are simple and convenient.

[0087] During installation, the PCB circuit board 2 is slid into the grooves 94 on the upper and lower sides of the spiral duct 91, with the end of the PCB circuit board 2 equipped with the fixing head 13 facing inward. After being fully slid in, the cylindrical hole 132 and the two rectangular grooves 133 on the fixing head 13 are fitted onto the positioning shaft 123 and the positioning block 125, respectively. The positioning block 125 corresponds to the arc groove 134. At this time, the drive handle 124 is turned, which drives the positioning shaft 123 to rotate. The threads on its surface interact with the nut 122. The positioning shaft 123 rotates and moves towards the side closer to the fixing plate 121, driving the positioning block 125 into the arc groove 134 and pulling the entire fixing head 13, i.e., pulling the PCB circuit board 2. At this time, the fixing head 13 compresses the elastic element 126 and rotates the handle 124 until it can no longer rotate. At this time, the positioning block 125 corresponds to the positioning groove 135. The fixing head 13 is pushed by the elastic element 126, so that the positioning block 125 enters the positioning groove 135, completing the installation. The operation is simple.

[0088] The positioning shaft 123 and positioning block 125, together with the arc groove 134 and positioning groove 135, fix and limit the fixed head 13, that is, fix and limit the PCB circuit board 2. At the same time, the positioning groove and positioning block 125 can limit the axial movement of the positioning shaft 123, which can prevent the axial rotation of the positioning shaft 123 from causing instability and improve the overall stability of the fixation. It is simple to operate and easy to use.

[0089] During disassembly, press the PCB circuit board 2 to squeeze the elastic element 126, thereby moving the positioning block 125 out of the positioning groove 135 and into the interior of the arc groove 134. At this time, rotate the handle in the opposite direction to move the positioning block 125 out of the arc groove 134 and align it with the rectangular groove 133. Then, remove the PCB circuit board 2. The operation is simple and convenient.

[0090] Third Embodiment

[0091] Please refer to the following: Figure 11 and Figure 12 Based on the first embodiment of this application which provides a stable portable vehicle AC charging plug, the third embodiment of this application proposes another stable portable vehicle AC charging plug.

[0092] Specifically, the difference in the third embodiment of this application is that it also includes a pre-cooling mechanism 14 for cooling the airflow. The pre-cooling mechanism 14 has a pre-cooling box 141, which is pre-buried underground and not less than 50 cm below ground level. The pre-cooling box 141 has extensions 145 extending from both sides, which are connected to the interior of the pre-cooling box 141. The interior of the pre-cooling box 141 is filled with coolant.

[0093] By setting the extension 145, the contact area with the soil can be increased, thereby improving the heat conduction efficiency.

[0094] The upper side of the precooling box 141 is connected to a liquid replenishment pipe, one end of which extends above the ground and is fitted with a sealing cap. The precooling box 141 is made of a metal material with good thermal conductivity, preferably aluminum or stainless steel.

[0095] A spiral precooling pipe 142 is fixedly connected inside the precooling box 141. The output end of the spiral precooling pipe 142 is connected to an air outlet pipe 144. The air outlet pipe is connected to the input end of a fan. The output end of the fan is connected to a flexible hose connected to the air inlet pipe 7. The input end of the spiral precooling pipe 142 is connected to an air inlet pipe 146. One end of the air inlet pipe 146 passes through the precooling box 141 and extends to the outside of the precooling box 141 and to the ground. The part of the air inlet pipe 146 located on the ground is set in an inverted U-shape and the end is connected to a dustproof net.

[0096] The intake pipe 146 is designed in an inverted U-shape to prevent dust, rainwater, etc. from falling into the intake pipe 146.

[0097] The surface of the spiral precooling tube 142 is provided with an extension plate 143. Both the precooling tube 142 and the extension plate 143 are made of a metal material with good thermal conductivity, preferably aluminum or stainless steel. A side box 147 is fixedly connected to one side of the air inlet tube 146 and inside the precooling box 141. The side box 147 is connected to the inside of the air inlet tube 146.

[0098] By setting the extension plate 143, the contact area with the coolant is increased, thereby improving the heat conduction efficiency.

[0099] A rotary drive mechanism 15 is installed inside the side box 147. The rotary drive mechanism 15 includes a drive shaft 151, which is rotatably connected to the side box 147. Both ends of the drive shaft 151 extend through the side box 147 to the outside of the side box 147, and the penetration is mechanically sealed. A drive impeller 152 is fixedly connected to the middle of the drive shaft 151 inside the side box 147. Both ends of the drive shaft 151 and the outside of the side box 147 are fixedly connected to stirring blades 153. Multiple strip holes 154 are opened on the stirring blades 153. The drive impeller 152 extends into the interior of the side box 147.

[0100] The drive shaft 151 passes through the side box 147 and is sealed with a mechanical seal.

[0101] The pre-cooling mechanism 14 can pre-cool the airflow entering the charging plug, thereby improving the cooling effect.

[0102] The airflow enters the spiral precooling pipe 142 through the air inlet pipe 146. By setting it as a spiral precooling pipe, the travel distance of the airflow in the precooling pipe can be extended, thereby improving the cooling effect. The heat in the airflow is introduced into the spiral precooling pipe 142. The spiral precooling pipe 142 transfers the heat to the coolant inside the precooling box 141. The heat poured into the coolant is conducted to the soil by the precooling box 141. The extensions 145 on both sides of the precooling box 141 can increase the contact area between the precooling box 141 and the soil, improve the heat conduction efficiency, and thus quickly remove the heat. This allows the precooling mechanism 14 to continuously precool the incoming airflow, thereby improving the cooling effect.

[0103] Furthermore, when the airflow passes through the intake pipe 146, it pushes the impeller 152 located inside the intake pipe 146, causing the impeller 152 to drive the drive shaft 151 to rotate. The drive shaft 151 then drives the stirring blades 153 at both ends to rotate, thereby driving the flow of coolant inside the precooling box 141. This allows the coolant inside the cooling box 141 to quickly come into contact with the spiral precooling pipe 142, and the spiral precooling pipe 142 to quickly come into contact with coolant at different locations. After the spiral precooling pipe 142 transfers temperature to the coolant it is in contact with, it can quickly come into contact with new low-temperature coolant, greatly improving the cooling speed and effect. Moreover, since the incoming airflow is used as power, no additional power equipment is required, making it more energy-efficient and environmentally friendly.

[0104] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A stable portable vehicle AC charging plug, characterized in that, include: Plug housing; A PCB circuit board is installed inside the plug housing. The output end of the PCB circuit board is connected to the input end of the charging head, and the input end of the PCB circuit board is connected to the output end of the plug cable. An air inlet pipe is connected to the lower side of the handle of the plug housing. The handle has a hollow structure and communicates with the interior of the plug housing. One end of the air inlet pipe is connected to the output end of the fan through a flexible hose. A heat-conducting fin is provided inside the handle. A driving mechanism is provided on one side of the air inlet pipe. An exhaust component is connected to the lower side of the plug housing. The exhaust component includes an upper tube and a lower tube, which are connected to form an exhaust pipe. A sealing ball is provided inside the exhaust pipe, and the sealing ball is connected to the driving mechanism via a connecting rope. A support ring is fixedly connected inside the lower tube via a connecting rod.

2. The portable vehicle AC charging plug according to claim 1, characterized in that, The driving mechanism includes a side cover, which is fixed to one side of the air inlet pipe and communicates with the interior of the air inlet pipe. A rotating shaft is fixedly connected inside the side cover, and a connecting sleeve is sleeved on the surface of the rotating shaft. A driving blade is fixedly connected to one side of the connecting sleeve, and one end of the driving blade extends into the interior of the air inlet pipe.

3. The portable vehicle AC charging plug according to claim 2, characterized in that, A support block is fixedly connected to the surface of the connecting sleeve. The support block is set at a 90-degree angle to the center of the driving blade and the rotating shaft. One end of the connecting rope is fixed to the support block, and the other end of the connecting rope is fixed to the top of the sealing ball. A torsion spring is sleeved on the surface of the rotating shaft. One end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring contacts the upper side of the driving blade.

4. The portable vehicle AC charging plug according to claim 1, characterized in that, The diameter of the upper tube is smaller than that of the lower tube, and a sealing ring with an inner arc surface is connected to the inner surface of the upper tube to increase the contact surface with the sealing ball.

5. The portable vehicle AC charging plug with stable operation according to claim 1, characterized in that, The PCB circuit board is installed inside the air-cooling mechanism, which is installed inside the plug housing. The air-cooling mechanism includes a spiral air duct, and two fixed shafts are symmetrically fixedly connected to the bottom of the spiral air duct. The spiral air duct is installed on the plug housing through the fixed shafts.

6. The portable vehicle AC charging plug with stable operation according to claim 5, characterized in that, An air outlet is provided on the inner side of the spiral duct, and one end of the spiral duct is connected to the air inlet duct through a connecting pipe. Sliding grooves are provided on the upper and lower sides of the inner wall of the spiral duct.

7. The stable portable vehicle AC charging plug according to claim 6, characterized in that, One end of the spiral duct is fixedly connected to an installation mechanism for mounting a PCB circuit board. The installation mechanism includes a fixing plate, a nut is fixedly connected to one side of the fixing plate, a positioning shaft is threaded onto the nut, a drive handle is fixedly connected to one end of the positioning shaft, and positioning blocks are symmetrically fixedly connected to the other end of the positioning shaft.

8. The portable vehicle AC charging plug according to claim 7, characterized in that, An elastic element is fitted onto the surface of the positioning shaft and on one side of the fixing plate.

9. The portable vehicle AC charging plug according to claim 1, characterized in that, A fixing head is fixedly connected to one side of the PCB circuit board. The fixing head includes a fixing cylinder. A cylindrical hole is opened at one end of the fixing cylinder. Rectangular grooves are opened on both sides of the inner wall of the cylindrical hole. An arc groove is opened on one side of the inner wall of the rectangular groove. A positioning groove is opened on one side of the inner wall of the arc groove.

10. The portable vehicle AC charging plug according to claim 9, characterized in that, The two arc-shaped grooves are opened counterclockwise on one side of the two rectangular grooves.

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