High-frequency filter inductor for new energy vehicle charging pile and manufacturing method of high-frequency filter inductor

Abstract

The invention discloses a high-frequency filter inductor for a new energy vehicle charging pile and a manufacturing method of the high-frequency filter inductor, and relates to the technical field of filter inductors, the high-frequency filter inductor comprises a base, two magnetic cores are symmetrically and fixedly connected to the upper end of the base, the side walls of the two magnetic cores are fixedly sleeved with windings, the lower ends of the windings are fixedly connected with pins, and the pins are fixedly connected with pins. The upper end of the base is fixedly connected with a shielding cover; the heat dissipation mechanism comprises an air inlet and an air outlet which are formed in the side wall of the shielding cover, the side wall of the shielding cover is fixedly connected with an L-shaped plate, the side wall of the L-shaped plate is rotationally connected with a first spline sleeve, one end of the first spline sleeve extends to the inner wall of the air inlet and is fixedly connected with a plurality of fan blades, and the fan blades are arranged in the first spline sleeve. The upper end of the base is fixedly connected with a micro motor, and the output end of the micro motor is fixedly connected with a driving wheel. Through the arrangement of three-stage cooling, the cooling effect can be automatically adjusted according to the temperature in the shielding cover, and the situation that the temperature is too high, and operation of the filter inductor is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of filter inductors, and in particular to a high-frequency filter inductor for a new energy vehicle charging pile and a manufacturing method thereof. Background Art

[0002] Inductors are devices used to provide inductance. Various coils wound with insulated wires are called inductors. Their main function is to block alternating current and pass direct current, and to block high frequencies and pass low frequencies. That is to say, high-frequency signals will encounter great resistance when passing through the inductor coil. Filter inductors are used in various electrical appliances.

[0003] The existing high-frequency filter inductor for new energy charging piles is mainly composed of a magnetic core, a winding, a base and a shielding cover. When the filter inductor is working, heat will accumulate inside it. At present, heat dissipation holes are opened on the shielding cover to dissipate the heat, but this heat dissipation method is relatively passive and has poor heat dissipation effect, which will cause the internal temperature of the filter inductor to be too high and reduce the service life of the inductor. In addition, if the external air is humid, the humid air will enter the inductor when the inductor is not running, and the moisture will affect the winding and corrode the winding, thereby causing damage to the inductor.

[0004] Based on this, we propose a high-frequency filter inductor for new energy vehicle charging piles and a manufacturing method thereof. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a high-frequency filtering inductor for a new energy vehicle charging pile.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A high-frequency filter inductor for a new energy vehicle charging pile and a manufacturing method thereof, comprising a base, wherein two magnetic cores are symmetrically fixedly connected to the upper end of the base, windings are fixedly sleeved on the side walls of the two magnetic cores, pins are fixedly connected to the lower end of the windings, and a shielding cover is fixedly connected to the upper end of the base; A heat dissipation mechanism, the heat dissipation mechanism comprising an air inlet and an air outlet opened on the side wall of the shielding cover, the side wall of the shielding cover is fixedly connected to an L-shaped plate, the side wall of the L-shaped plate is rotatably connected to a first spline sleeve, one end of the first spline sleeve extends to the inner wall of the air inlet and is fixedly connected to a plurality of fan blades, the upper end of the base is fixedly connected to a micro motor, the output end of the micro motor is fixedly connected to a driving wheel, the side wall of the first spline sleeve is fixedly connected to a driven wheel, and the driving wheel is connected to the driven wheel through a synchronous belt; An air extraction mechanism, the air extraction mechanism comprising a first slide cylinder fixedly connected to the upper end of the base, a first slide plug being sealingly and slidingly connected to the inner wall of the first slide cylinder, a one-way exhaust pipe being fixedly connected to the inner wall of the first slide cylinder, and the first slide cylinder being connected to the inside of the shielding cover through the one-way air extraction pipe; A cooling mechanism for cooling the high-frequency filter inductor is installed in the shielding cover.

[0007] Preferably, the air extraction mechanism also includes a first vertical plate fixedly connected to the upper end of the base, the side wall of the first vertical plate is rotatably connected to the second spline sleeve, the inner wall of the first spline sleeve is sealingly and slidably connected to the first spline shaft, one end of the first spline shaft is fixedly connected to the second spline shaft, the side wall of the second spline shaft is slidably connected to the inner wall of the second spline sleeve, the upper end of the first sliding plug is fixedly connected to the first T-bar, the upper end of the first T-bar passes through the upper end of the first sliding cylinder, the side wall of the first T-bar is sleeved with a first spring, the two ends of the first spring are respectively fixedly connected to the upper end of the first sliding cylinder and the first T-bar, the side wall of the second spline sleeve is fixedly connected to the first cam, and the lower end of the first cam slides against the first T-bar.

[0008] Preferably, the cooling mechanism includes a cooling pipe fixedly connected to the top of the shielding cover through a fixed shaft, the lower end of the base is fixedly connected to a cooling box, the upper end of the base is fixedly connected to a second slide cylinder, the inner wall of the second slide cylinder is sealingly and slidably connected to a second slide plug, the second slide cylinder is communicated with the cooling box through a one-way liquid inlet pipe, and the second slide cylinder is communicated with the cooling pipe through a one-way liquid outlet pipe. The upper end of the base is fixedly connected to a second vertical plate, the side wall of the second vertical plate is rotatably connected to a third spline sleeve, one end of the second spline shaft close to the third spline sleeve is fixedly connected to the third spline shaft, the side wall of the third spline shaft is slidably connected to the inner wall of the third spline sleeve, the upper end of the second slide plug is fixedly connected to a second T-bar, the upper end of the second T-bar passes through the upper end of the second slide cylinder, the side wall of the second T-bar is sleeved with a second spring, the two ends of the second spring are respectively fixedly connected to the upper end of the second slide cylinder and the second T-bar, the side wall of the third spline sleeve is fixedly connected to a second cam, and the lower end of the second cam slides against the second T-bar.

[0009] Preferably, a cutting mechanism is installed at the lower end of the base, and the cutting mechanism includes two mounting blocks symmetrically fixedly connected to the lower end of the base, and the side walls of the two mounting blocks are provided with a slide groove, and the inner wall of the slide groove is sealingly and slidably connected with a cutter, and a plurality of third springs are fixedly connected between the inner wall of the slide groove and the cutter, and two abutment plates are symmetrically fixedly connected to the lower end of the base, and the side walls of the abutment plates are fitted with the pins, the third spline sleeve is connected to the slide groove through a one-way air outlet pipe, a pressure relief valve is installed on the inner wall of the one-way air outlet pipe, a one-way air inlet hole is opened on the inner wall of the third spline sleeve, an exhaust hole is opened on the inner wall of the slide groove, and a solenoid valve is installed on the inner wall of the exhaust hole.

[0010] Preferably, a starting mechanism is installed on the base, and the starting mechanism includes a cavity opened in the base, the inner wall of the cavity is sealed and fixedly connected with a sealing plate, the sealing plate divides the interior of the cavity into two parts: a liquid storage chamber and a pump air chamber, the interior of the liquid storage chamber is filled with dichloromethane, the inner wall of the liquid storage chamber is sealed and slidably connected with a first slide plate, the inner wall of the pump air chamber is sealed and slidably connected with a second slide plate, the side wall of the first slide plate is fixedly connected with a connecting rod, one end of the connecting rod passes through the side wall of the sealing plate and is fixedly connected to the second slide plate, the side wall of the connecting rod is sleeved with a fourth spring, the two ends of the fourth spring are respectively fixedly connected to the side wall of the first slide plate and the side wall of the sealing plate, the upper end of the base is fixedly connected with a rotating joint through a bracket, one end of the first spline sleeve is fixedly connected to the rotating joint, the inner wall of the cavity is fixedly connected with a connecting pipe, and the other end of the connecting pipe is fixedly connected to the rotating joint.

[0011] Preferably, a dehumidification mechanism is installed in the shielding cover, and the dehumidification mechanism includes a vertical cylinder fixedly connected to the top of the shielding cover, a conductive plate is slidably connected to the inner wall of the vertical cylinder, the lower end of the conductive plate is fixedly connected to the vertical rod, the lower end of the vertical rod passes through the lower end of the vertical cylinder and is fixedly connected to a drying box, the side wall of the drying box is provided with a plurality of ventilation holes, and the drying box is filled with water-absorbing resin, the side wall of the vertical rod is sleeved with a fifth spring, the two ends of the fifth spring are respectively fixedly connected to the lower end of the conductive plate and the bottom of the vertical cylinder, the bottom of the vertical cylinder is fixedly connected to a conductive ring, the inner wall of the air inlet is fixedly connected to an electric heating ring, and the micro motor, the conductive plate, the conductive ring, the electric heating ring and the power supply are electrically connected through wires.

[0012] Preferably, the inner walls of the air inlet and the air outlet are both fixedly connected with dustproof nets.

[0013] Preferably, a drain pipe is fixedly connected to the side wall of the cooling box, the other end of the drain pipe is connected to the cooling pipe, and a plurality of heat sinks are fixedly embedded at the lower end of the cooling box, and the plurality of heat sinks are made of materials with good heat dissipation performance.

[0014] Preferably, the magnetic core is made of Sendust material, and the base is made of a material with good thermal conductivity.

[0015] A method for manufacturing a high-frequency filter inductor for a new energy vehicle charging pile comprises the following steps: S1. Each winding is covered with a 35mm black sleeve. Each core has two windings assembled on both sides of the core through the core opening, leaving the top of the core empty. S2. Place composite paper at the bend of the winding to prevent the insulation layer of the winding from being scratched off; S3. Arrange the take-up wires of the assembled magnetic core and winding according to the opening position of the base and fix them through the base. The take-up wires passing through the base are tinned; S4, glue filling treatment at the gap between the base and the core; S5. Impregnation treatment.

[0016] The present invention has the following beneficial effects: 1. By setting the heat dissipation mechanism, the exhaust mechanism, the cooling mechanism and the starting mechanism, the three-level temperature reduction setting can automatically adjust the cooling effect according to the temperature in the shielding cover to avoid excessive temperature and affect the operation of the filter inductor; 2. By setting a cutting mechanism, when the current in the circuit is overloaded and the temperature inside the filter inductor rises abnormally, the cutter will move quickly and cooperate with the plate to cut off the pins, thereby cutting off the power supply to avoid damage to the filter inductor due to continuous overload of current in the circuit; 3. By setting up a dehumidification mechanism, when the filter inductor is not in use, the water-absorbing resin will absorb the moisture in the air inside the shielding cover, thereby keeping the inside of the shielding cover dry and preventing moisture from corroding the windings. When the water-absorbing resin continues to absorb moisture, its weight will gradually increase, thereby driving the conductive plate to move downward. When the water-absorbing resin is saturated with water, the conductive plate will contact the conductive ring. At this time, the micro motor and the electric heating ring will be powered on and started, and the micro motor will drive the fan blades to rotate to blow air into the shielding cover, and the electric heating ring will heat the blown air, thereby blowing in hot air, drying the water-absorbing resin, and taking away the moisture, so that the water-absorbing resin can be repeatedly dehumidified. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-frequency filter inductor for a new energy vehicle charging pile proposed by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from another angle; Figure 3 for Figure 1 Schematic diagram of the internal structure of the medium structure; Figure 4 for Figure 3 A schematic diagram of the structure enlargement at point A; Figure 5 for Figure 3 A schematic diagram of the structure at B in FIG. Figure 6 for Figure 3 A schematic diagram of the structure at position C in FIG. Figure 7 for Figure 3 A schematic diagram of the structure at D in FIG. Figure 8 for Figure 3 A schematic diagram of the structure at position E in FIG. Fig. 9 for Figure 1A magnified schematic diagram of the structure at F in FIG. Fig.10 for Figure 3 Schematic diagram of the three-dimensional structure of the magnetic core.

[0018] In the figure: 1, base; 2, magnetic core; 3, winding; 4, pin; 5, shielding cover; 6, air inlet; 7, air outlet; 8, L-shaped plate; 9, first spline sleeve; 10, fan blade; 11, micro motor; 12, driving wheel; 13, driven wheel; 14, first slide cylinder; 15, first slide plug; 16, one-way exhaust pipe; 17, one-way exhaust pipe; 18, first vertical plate; 19, second spline sleeve; 20, first spline shaft; 21, second spline shaft; 22, first T-bar; 23, first spring; 24, first cam; 25, cooling pipe; 26, cooling box; 27, second slide cylinder; 28, second slide plug; 29, one-way liquid inlet pipe; 30, one-way liquid outlet pipe; 31, second vertical plate; 32, third spline sleeve; 33, third spline shaft; 34. Second T-bar; 35. Second spring; 36. Second cam; 37. Mounting block; 38. Slide; 39. Cutter; 40. Third spring; 41. Abutment plate; 42. One-way air outlet pipe; 43. One-way air inlet hole; 44. Cavity; 45. Sealing plate; 451. Liquid storage chamber; 452. Pump air chamber; 46. Dichloromethane; 47. First slide plate; 48. Second slide plate; 49. Connecting rod; 50. Fourth spring; 51. Rotary joint; 52. Connecting pipe; 53. Vertical cylinder; 54. Conductive plate; 55. Vertical rod; 56. Drying box; 57. Air vent; 58. Water-absorbing resin; 59. Fifth spring; 60. Conductive ring; 61. Electric heating ring; 62. Dustproof net; 63. Drain pipe; 64. Heat sink; 65. Exhaust hole. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0020] Reference Figure 1 - Fig.10 A high-frequency filter inductor for a new energy vehicle charging pile includes a base 1, two magnetic cores 2 are symmetrically fixedly connected to the upper end of the base 1, windings 3 are fixedly sleeved on the side walls of the two magnetic cores 2, pins 4 are fixedly connected to the lower end of the winding 3, and a shielding cover 5 is fixedly connected to the upper end of the base 1. The magnetic core 2 is made of sendust material with low loss, high saturation magnetic flux density and stable magnetic permeability, and the base 1 is made of a material with good thermal conductivity; It should be noted that, as Fig.10 As shown, the magnetic core 2 is provided with an annular opening to facilitate installation of the winding 3 .

[0021] The heat dissipation mechanism includes an air inlet 6 and an air outlet 7 provided on the side wall of the shielding cover 5. The side wall of the shielding cover 5 is fixedly connected to an L-shaped plate 8. The side wall of the L-shaped plate 8 is rotatably connected to a first spline sleeve 9. One end of the first spline sleeve 9 extends to the inner wall of the air inlet 6 and is fixedly connected to a plurality of fan blades 10. The upper end of the base 1 is fixedly connected to a micro motor 11. The output end of the micro motor 11 is fixedly connected to a driving wheel 12. The side wall of the first spline sleeve 9 is fixedly connected to a driven wheel 13. The driving wheel 12 is connected to the driven wheel 13 through a synchronous belt. The air extraction mechanism includes a first slide cylinder 14 fixedly connected to the upper end of the base 1, a first slide plug 15 is sealingly and slidably connected to the inner wall of the first slide cylinder 14, a one-way exhaust pipe 16 is fixedly connected to the inner wall of the first slide cylinder 14, the one-way exhaust pipe 16 only allows the air in the first slide cylinder 14 to be discharged, the first slide cylinder 14 is connected to the inside of the shielding cover 5 through a one-way exhaust pipe 17, and the one-way exhaust pipe 17 only allows the air in the shielding cover 5 to enter the first slide cylinder 14; A cooling mechanism for cooling the high-frequency filter inductor is installed in the shield case 5 .

[0022] Furthermore, when the micro motor 11 is powered on and started, it will drive the driving wheel 12 to rotate, and then drive the driven wheel 13 to rotate, drive the first spline sleeve 9 to rotate, and drive the multiple fan blades 10 to rotate. Under the action of the fan blades 10, the external cold air will enter the shielding cover 5 through the air inlet 6, and then the hot air in the shielding cover 5 will be discharged through the exhaust port 7, thereby accelerating the air circulation inside the shielding cover 5 and playing a role in heat dissipation.

[0023] The air extraction mechanism also includes a first vertical plate 18 fixedly connected to the upper end of the base 1, and the side wall of the first vertical plate 18 is rotatably connected to the second spline sleeve 19, the inner wall of the first spline sleeve 9 is sealingly and slidably connected to the first spline shaft 20, one end of the first spline shaft 20 is fixedly connected to the second spline shaft 21, the side wall of the second spline shaft 21 is slidably connected to the inner wall of the second spline sleeve 19, the upper end of the first sliding plug 15 is fixedly connected to the first T-bar 22, the upper end of the first T-bar 22 passes through the upper end of the first slide cylinder 14, the side wall of the first T-bar 22 is sleeved with a first spring 23, the two ends of the first spring 23 are respectively fixedly connected to the upper end of the first slide cylinder 14 and the first T-bar 22, the side wall of the second spline sleeve 19 is fixedly connected to the first cam 24, and the lower end of the first cam 24 slides against the first T-bar 22.

[0024] The cooling mechanism includes a cooling tube 25 fixedly connected to the top of the shielding cover 5 through a fixed shaft, the cooling tube 25 is made of a material with good thermal conductivity, a cooling box 26 is fixedly connected to the lower end of the base 1, and the cooling box 26 stores a coolant, a second slide cylinder 27 is fixedly connected to the upper end of the base 1, and a second slide plug 28 is sealed and slidably connected to the inner wall of the second slide cylinder 27, the second slide cylinder 27 is connected to the cooling box 26 through a one-way liquid inlet pipe 29, and the one-way liquid inlet pipe 29 only allows the coolant in the cooling box 26 to enter the second slide cylinder 27, the second slide cylinder 27 is connected to the cooling tube 25 through a one-way liquid outlet pipe 30, and the one-way liquid outlet pipe 30 only allows the coolant in the second slide cylinder 27 to enter the cooling tube 25, the base 1 The upper end is fixedly connected to a second vertical plate 31, and the side wall of the second vertical plate 31 is rotatably connected to a third spline sleeve 32. The end of the second spline shaft 21 close to the third spline sleeve 32 is fixedly connected to a third spline shaft 33, and the side wall of the third spline shaft 33 is slidably connected to the inner wall of the third spline sleeve 32. The upper end of the second sliding plug 28 is fixedly connected to a second T-bar 34, and the upper end of the second T-bar 34 passes through the upper end of the second slide cylinder 27. The side wall of the second T-bar 34 is sleeved with a second spring 35, and the two ends of the second spring 35 are respectively fixedly connected to the upper end of the second slide cylinder 27 and the second T-bar 34. The side wall of the third spline sleeve 32 is fixedly connected to a second cam 36, and the lower end of the second cam 36 slides against the second T-bar 34.

[0025] It should be noted that both the second spline shaft 21 and the third spline shaft 33 are composed of a spline portion and a smooth portion, and the smooth portion of the third spline shaft 33 is larger than the smooth portion of the second spline shaft 21 .

[0026] A cutting mechanism is installed at the lower end of the base 1, and the cutting mechanism includes two mounting blocks 37 symmetrically fixedly connected to the lower end of the base 1. The side walls of the two mounting blocks 37 are both provided with a slide groove 38, and a cutter 39 is sealingly and slidably connected to the inner wall of the slide groove 38. A plurality of third springs 40 are commonly and fixedly connected between the inner wall of the slide groove 38 and the cutter 39. Two abutment plates 41 are symmetrically and fixedly connected to the lower end of the base 1, and the side walls of the abutment plates 41 are fitted with the pin 4. The third spline sleeve 32 is connected to the slide groove 38 through a one-way air outlet pipe 42, and the one-way air outlet pipe 42 only allows the air in the third spline sleeve 32 to enter the slide groove 38. A pressure relief valve is installed on the inner wall of the one-way air outlet pipe 42, and a one-way air inlet hole 43 is opened on the inner wall of the third spline sleeve 32. The one-way air inlet hole 43 only allows external air to enter the third spline sleeve 32. An exhaust hole 65 is opened on the inner wall of the slide groove 38, and an electromagnetic valve (such as Fig. 9 As shown in the figure), by energizing the solenoid valve to open it, the air in the slide groove 38 will be discharged through the exhaust hole 65, and then the cutter 39 will be reset under the action of the third spring 40.

[0027] It should be noted that when the third spline shaft 33 completely enters the third spline sleeve 32, the first spline shaft 20 is still in the first spline sleeve 9, and the second spline shaft 21 is still in the second spline sleeve 19, and when the third spline shaft 33 enters the third spline sleeve 32, the third spline shaft 33 will slide sealed in the third spline sleeve 32.

[0028] The base 1 is provided with a starting mechanism, which includes a cavity 44 opened in the base 1, the inner wall of the cavity 44 is sealed and fixedly connected with a sealing plate 45, the sealing plate 45 divides the interior of the cavity 44 into two parts: a liquid storage chamber 451 and a pump air chamber 452, the liquid storage chamber 451 is filled with dichloromethane 46, the inner wall of the liquid storage chamber 451 is sealed and slidably connected with a first slide plate 47, and the dichloromethane 46 is filled in the left space of the first slide plate 47 (such as the attached Figure 3 As shown), the inner wall of the pump air chamber 452 is sealed and slidably connected to the second slide plate 48, the side wall of the first slide plate 47 is fixedly connected to the connecting rod 49, one end of the connecting rod 49 passes through the side wall of the sealing plate 45 and is fixedly connected to the second slide plate 48, the side wall of the connecting rod 49 is sleeved with a fourth spring 50, the two ends of the fourth spring 50 are respectively fixedly connected to the side wall of the first slide plate 47 and the side wall of the sealing plate 45, the upper end of the base 1 is fixedly connected to the rotary joint 51 through the bracket, one end of the first spline sleeve 9 is fixedly connected to the rotary joint 51, the inner wall of the cavity 44 is fixedly connected to the connecting pipe 52, and the other end of the connecting pipe 52 is fixedly connected to the rotary joint 51.

[0029] Furthermore, if the heat dissipation effect by accelerating the air circulation is not ideal, the temperature in the shielding cover 5 continues to rise. At this time, the heat will be transferred to the dichloromethane 46 through the base 1, and the dichloromethane 46 will begin to absorb heat. When the temperature of the dichloromethane 46 reaches the boiling point, the dichloromethane 46 will begin to evaporate and change from liquid to gas. The pressure increases, which will push the first slide plate 47 to slide to the right in a sealed manner (such as the attached Figure 3As shown), the connecting rod 49 is driven to move rightward, and the second slide plate 48 is driven to slide rightward in a sealed manner. The air in the pump air chamber 452 is squeezed into the first spline sleeve 9 through the connecting pipe 52, and the first spline shaft 20 is pushed to move rightward. When the first spline shaft 20 moves into the second spline sleeve 19, the first spline shaft 20 drives the second spline sleeve 19 to rotate, and the first cam 24 is driven to rotate. The first cam 24 cooperates with the first spring 23 to drive the first T-bar 22 to move up and down, and the first slide plug 15 is driven to slide back and forth in a sealed manner. At this time, the hot air in the shielding cover 5 is drawn into the first slide cylinder 14 through the one-way exhaust pipe 17, and then the hot air in the first slide cylinder 14 is passed through The one-way exhaust pipe 16 is discharged, which can further accelerate the discharge of hot air in the shielding cover 5, thereby further improving the heat dissipation effect. If the temperature in the shielding cover 5 begins to decrease at this time, the dichloromethane 46 will cool down and then change from gas to liquid, and the pressure will decrease. Under the action of the fourth spring 50, the second slide plate 48 will move to the left and reset, and then the air in the first spline sleeve 9 will be drawn out through the connecting pipe 52, and the first spline shaft 20 will drive the second spline shaft 21 to reset, and then it will be transformed into a separate fan blade 10 to rotate for ventilation and heat dissipation. In this way, the temperature in the shielding cover 5 can be maintained in an approximately constant range, and the temperature in the shielding cover 5 will not be too high, affecting the operation of the filter inductor.

[0030] Furthermore, if the temperature in the shielding cover 5 continues to rise on the basis of the rotation of the fan blades 10 and the exhaust and heat dissipation, the dichloromethane 46 will continue to evaporate, and then more air will be squeezed into the first spline sleeve 9, so that the first spline shaft 20 continues to move, driving the second spline shaft 21 to continue to move, and then driving the third spline shaft 33 to move. When the third spline shaft 33 moves into the third spline sleeve 32, the third spline shaft 33 will drive the third spline sleeve 32 to rotate, driving the second cam 36 to rotate, and the second cam 36 cooperates with the second spring 35 to drive the second T-bar 34 to move up and down, thereby driving The second slide plug 28 slides in a sealed manner. At this time, the coolant in the cooling box 26 will be pumped into the second slide cylinder 27 through the one-way liquid inlet pipe 29, and then the coolant in the second slide cylinder 27 will enter the cooling pipe 25 through the one-way liquid outlet pipe 30. The coolant flows in the cooling pipe 25, and will produce heat exchange with the inside of the shielding cover 5, thereby cooling and reducing the temperature, thereby once again improving the cooling and reducing the temperature. If the temperature in the shielding cover 5 drops, it will be converted into the rotation of the fan blades 10 and exhaust cooling, so that the temperature in the shielding cover 5 is maintained in an approximately constant range, and the temperature in the shielding cover 5 will not be too high, affecting the operation of the filter inductor.

[0031] It is worth mentioning that if the temperature inside the shielding cover 5 continues to rise after the third-stage cooling is started, it may be that the current in the circuit is overloaded, causing the temperature inside the filter inductor to rise abnormally. At this time, as the dichloromethane 46 continues to evaporate, it will push the third spline shaft 33 to continue to slide to the right in the third spline sleeve 32 (as shown in the attached figure). Figure 3 As shown in the figure, when the third spline shaft 33 moves to the maximum limit, the pressure in the third spline sleeve 32 exceeds the threshold of the pressure relief valve installed on the inner wall of the one-way air outlet pipe 42. At this time, the pressure relief valve opens, and the air in the third spline sleeve 32 is quickly pumped into the slide groove 38 through the one-way air outlet pipe 42, so that the pressure in the slide groove 38 increases instantly, pushing the cutter 39 to move quickly, and cooperating with the abutment plate 41 to cut off the pin 4, thereby cutting off the power to avoid damage to the filter inductor due to continuous overload of current in the circuit.

[0032] A dehumidification mechanism is installed in the shielding cover 5, and the dehumidification mechanism includes a vertical cylinder 53 fixedly connected to the top of the shielding cover 5, a conductive plate 54 is slidably connected to the inner wall of the vertical cylinder 53, the lower end of the conductive plate 54 is fixedly connected to the vertical rod 55, the lower end of the vertical rod 55 passes through the lower end of the vertical cylinder 53 and is fixedly connected to a drying box 56, a plurality of ventilation holes 57 are opened on the side wall of the drying box 56, and the drying box 56 is filled with water-absorbing resin 58, a fifth spring 59 is sleeved on the side wall of the vertical rod 55, and the two ends of the fifth spring 59 are respectively fixedly connected to the lower end of the conductive plate 54 and the bottom of the vertical cylinder 53, a conductive ring 60 is fixedly connected to the bottom of the vertical cylinder 53, an electric heating ring 61 is fixedly connected to the inner wall of the air inlet 6, and the micro motor 11, the conductive plate 54, the conductive ring 60, the electric heating ring 61 and the power supply are electrically connected through wires.

[0033] Furthermore, when the filter inductor is not in use, the water-absorbing resin 58 will absorb the moisture in the air inside the shielding cover 5, thereby keeping the inside of the shielding cover 5 dry and preventing moisture from corroding the winding 3. When the water-absorbing resin 58 continues to absorb moisture, its weight will gradually increase, thereby driving the conductive plate 54 to move downward (as shown in the attached figure). Figure 8 As shown), when the water-absorbing resin 58 is saturated with water, the conductive plate 54 will contact the conductive ring 60, and the micro motor 11 and the electric heating ring 61 will be powered on and started, and the micro motor 11 will drive the fan blades 10 to rotate to blow air into the shielding cover 5, and the electric heating ring 61 will heat the blown air, thereby blowing in hot air to dry the water-absorbing resin 58 and take away the moisture, so that the water-absorbing resin 58 can be repeatedly dehumidified.

[0034] The inner walls of the air inlet 6 and the air outlet 7 are both fixedly connected with dustproof nets 62 , and the dustproof nets 62 can prevent dust in the external air from entering the shielding cover 5 .

[0035] A drain pipe 63 is fixedly connected to the side wall of the cooling box 26, and the other end of the drain pipe 63 is connected to the cooling pipe 25. A plurality of heat sinks 64 are fixedly embedded at the lower end of the cooling box 26, and the plurality of heat sinks 64 are made of materials with good heat dissipation performance. The coolant in the cooling pipe 25 will eventually flow back into the cooling box 26 through the drain pipe 63. The plurality of heat sinks 64 will dissipate the heat carried by the coolant, thereby reducing the temperature of the coolant, so that the coolant can circulate for cooling.

[0036] A method for manufacturing a high-frequency filter inductor for a new energy vehicle charging pile comprises the following steps: S1. Each winding 3 is taken up with a 35mm black sleeve. Each magnetic core 2 has two windings 3 assembled on both sides of the magnetic core 2 through the opening of the magnetic core 2, and the upper part of the magnetic core 2 is left empty; S2. Place composite paper at the bend of winding 3 to prevent the insulation layer of winding 3 from being scratched; S3, arranging the take-up wires of the assembled magnetic core 2 and winding 3 according to the opening position of the base 1 and passing the take-up wires through the base 1 to fix them, and tinning the take-up wires passing through the base 1; S4, glue filling treatment at the gap between the base 1 and the magnetic core 2; S5. Impregnation treatment.

[0037] In the present invention, current is connected through pin 4 to start the entire filter inductor. At this time, the micro motor 11 will also be powered on and started. The micro motor 11 will drive the driving wheel 12 to rotate, and then drive the driven wheel 13 to rotate, drive the first spline sleeve 9 to rotate, and drive the multiple fan blades 10 to rotate. Under the action of the fan blades 10, the external cold air will enter the shielding cover 5 through the air inlet 6, and then the hot air in the shielding cover 5 will be discharged through the exhaust port 7, thereby accelerating the air circulation inside the shielding cover 5 and playing a role in heat dissipation.

[0038] If the heat dissipation effect by accelerating the air circulation is not ideal, the temperature in the shielding cover 5 continues to rise. At this time, the heat will be transferred to the dichloromethane 46 through the base 1, and the dichloromethane 46 will begin to absorb heat. When the temperature of the dichloromethane 46 reaches the boiling point, the dichloromethane 46 will begin to evaporate and change from liquid to gas. The pressure increases, which will push the first slide plate 47 to slide to the right in a sealed manner (such as the attached Figure 3As shown), the connecting rod 49 is driven to move rightward, and the second slide plate 48 is driven to slide rightward in a sealed manner. The air in the pump air chamber 452 is squeezed into the first spline sleeve 9 through the connecting pipe 52, and the first spline shaft 20 is pushed to move rightward. When the first spline shaft 20 moves into the second spline sleeve 19, the first spline shaft 20 drives the second spline sleeve 19 to rotate, and the first cam 24 is driven to rotate. The first cam 24 cooperates with the first spring 23 to drive the first T-bar 22 to move up and down, and the first slide plug 15 is driven to slide back and forth in a sealed manner. At this time, the hot air in the shielding cover 5 is drawn into the first slide cylinder 14 through the one-way exhaust pipe 17, and then the hot air in the first slide cylinder 14 is passed through The one-way exhaust pipe 16 is discharged, which can further accelerate the discharge of hot air in the shielding cover 5, thereby further improving the heat dissipation effect. If the temperature in the shielding cover 5 begins to decrease at this time, the dichloromethane 46 will cool down and then change from gas to liquid, and the pressure will decrease. Under the action of the fourth spring 50, the second slide plate 48 will move to the left and reset, and then the air in the first spline sleeve 9 will be drawn out through the connecting pipe 52, and the first spline shaft 20 will drive the second spline shaft 21 to reset, and then it will be transformed into a separate fan blade 10 to rotate for ventilation and heat dissipation. In this way, the temperature in the shielding cover 5 can be maintained in an approximately constant range, and the temperature in the shielding cover 5 will not be too high, affecting the operation of the filter inductor.

[0039] If the temperature in the shielding cover 5 continues to rise on the basis of the rotation of the fan blades 10 and the exhaust and heat dissipation, the dichloromethane 46 will continue to evaporate, and more air will be squeezed into the first spline sleeve 9, so that the first spline shaft 20 continues to move, driving the second spline shaft 21 to continue to move, and then driving the third spline shaft 33 to move. When the third spline shaft 33 moves into the third spline sleeve 32, the third spline shaft 33 will drive the third spline sleeve 32 to rotate, driving the second cam 36 to rotate, and the second cam 36 cooperates with the second spring 35 to drive the second T-bar 34 to move up and down, thereby driving the second spline shaft 33 to move back and forth. The sliding plug 28 slides in a sealed manner. At this time, the coolant in the cooling box 26 will be pumped into the second slide cylinder 27 through the one-way liquid inlet pipe 29, and then the coolant in the second slide cylinder 27 will enter the cooling tube 25 through the one-way liquid outlet pipe 30. The coolant flows in the cooling tube 25, and will produce heat exchange with the inside of the shielding cover 5, thereby cooling and lowering the temperature, thereby once again improving the cooling and lowering effect. If the temperature in the shielding cover 5 drops, it will be converted into the rotation of the fan blades 10 and exhaust cooling, so that the temperature in the shielding cover 5 is maintained in an approximately constant range, and the temperature in the shielding cover 5 will not be too high, affecting the operation of the filter inductor.

[0040] The coolant in the cooling pipe 25 will eventually flow back into the cooling box 26 through the drain pipe 63, and the plurality of heat sinks 64 will dissipate the heat carried by the coolant, thereby reducing the temperature of the coolant, so that the coolant can circulate for cooling.

[0041] If the temperature inside the shielding cover 5 continues to rise after the third-stage cooling is started, it may be that the current in the circuit is overloaded, causing the temperature inside the filter inductor to rise abnormally. At this time, as the dichloromethane 46 continues to evaporate, it will push the third spline shaft 33 to continue to slide rightward in the third spline sleeve 32 (as shown in the attached figure). Figure 3 As shown in the figure, when the third spline shaft 33 moves to the maximum limit, the pressure in the third spline sleeve 32 exceeds the threshold of the pressure relief valve installed on the inner wall of the one-way air outlet pipe 42. At this time, the pressure relief valve opens, and the air in the third spline sleeve 32 is quickly pumped into the slide groove 38 through the one-way air outlet pipe 42, so that the pressure in the slide groove 38 increases instantly, pushing the cutter 39 to move quickly, and cooperating with the abutment plate 41 to cut off the pin 4, thereby cutting off the power to avoid damage to the filter inductor due to continuous overload of current in the circuit.

[0042] In addition, when the filter inductor is not in use, the water-absorbing resin 58 will absorb the moisture in the air inside the shielding cover 5, thereby keeping the inside of the shielding cover 5 dry and preventing moisture from corroding the winding 3. When the water-absorbing resin 58 continues to absorb moisture, its weight will gradually increase, thereby driving the conductive plate 54 to move downward (as shown in the attached figure). Figure 8 As shown), when the water-absorbing resin 58 is saturated with water, the conductive plate 54 will contact the conductive ring 60, and the micro motor 11 and the electric heating ring 61 will be powered on and started, and the micro motor 11 will drive the fan blades 10 to rotate to blow air into the shielding cover 5, and the electric heating ring 61 will heat the blown air, thereby blowing in hot air to dry the water-absorbing resin 58 and take away the moisture, so that the water-absorbing resin 58 can be repeatedly dehumidified.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-frequency filter inductor for a new energy vehicle charging pile, characterized in that: include: A base (1), wherein two magnetic cores (2) are symmetrically fixedly connected to the upper end of the base (1), windings (3) are fixedly sleeved on the side walls of the two magnetic cores (2), pins (4) are fixedly connected to the lower ends of the windings (3), and a shielding cover (5) is fixedly connected to the upper end of the base (1); A heat dissipation mechanism, the heat dissipation mechanism comprising an air inlet (6) and an air outlet (7) provided on a side wall of a shielding cover (5), the side wall of the shielding cover (5) being fixedly connected to an L-shaped plate (8), the side wall of the L-shaped plate (8) being rotatably connected to a first spline sleeve (9), one end of the first spline sleeve (9) extending to the inner wall of the air inlet (6) and being fixedly connected to a plurality of fan blades (10), the upper end of the base (1) being fixedly connected to a micro motor (11), the output end of the micro motor (11) being fixedly connected to a driving wheel (12), the side wall of the first spline sleeve (9) being fixedly connected to a driven wheel (13), the driving wheel (12) being connected to the driven wheel (13) via a synchronous belt; An air extraction mechanism, the air extraction mechanism comprising a first slide cylinder (14) fixedly connected to the upper end of the base (1), a first slide plug (15) being sealingly and slidably connected to the inner wall of the first slide cylinder (14), a one-way exhaust pipe (16) being fixedly connected to the inner wall of the first slide cylinder (14), and the first slide cylinder (14) being connected to the interior of the shielding cover (5) via the one-way exhaust pipe (17); A cooling mechanism for cooling the high-frequency filter inductor is installed in the shielding cover (5).

2. A high-frequency filter inductor for a new energy vehicle charging pile according to claim 1, characterized in that: in: The air extraction mechanism further comprises a first vertical plate (18) fixedly connected to the upper end of the base (1); a second spline sleeve (19) is rotatably connected to the side wall of the first vertical plate (18); a first spline shaft (20) is sealingly and slidably connected to the inner wall of the first spline sleeve (9); one end of the first spline shaft (20) is fixedly connected to the second spline shaft (21); a side wall of the second spline shaft (21) is slidably connected to the inner wall of the second spline sleeve (19); a first T-shaped rod (22) is fixedly connected to the upper end of the first sliding plug (15); the upper end of the first T-shaped rod (22) passes through the upper end of the first sliding cylinder (14); a first spring (23) is sleeved on the side wall of the first T-shaped rod (22); two ends of the first spring (23) are respectively fixedly connected to the upper end of the first sliding cylinder (14) and the first T-shaped rod (22); a first cam (24) is fixedly connected to the side wall of the second spline sleeve (19); a lower end of the first cam (24) is slidably abutted against the first T-shaped rod (22).

3. A high-frequency filter inductor for a new energy vehicle charging pile according to claim 2, characterized in that: in: The cooling mechanism comprises a cooling pipe (25) fixedly connected to the top of the shielding cover (5) via a fixed shaft, the lower end of the base (1) is fixedly connected to a cooling box (26), the upper end of the base (1) is fixedly connected to a second slide cylinder (27), the inner wall of the second slide cylinder (27) is sealingly and slidably connected to a second slide plug (28), the second slide cylinder (27) is connected to the cooling box (26) via a one-way liquid inlet pipe (29), the second slide cylinder (27) is connected to the cooling pipe (25) via a one-way liquid outlet pipe (30), the upper end of the base (1) is fixedly connected to a second vertical plate (31), the side wall of the second vertical plate (31) is rotatably connected to a third spline sleeve (32), the second spline shaft (21 ) is fixedly connected to one end of the second sliding plug (28) near the third spline sleeve (32), and the side wall of the third spline shaft (33) is slidably connected to the inner wall of the third spline sleeve (32). The upper end of the second sliding plug (28) is fixedly connected to a second T-shaped rod (34), and the upper end of the second T-shaped rod (34) passes through the upper end of the second sliding cylinder (27). The side wall of the second T-shaped rod (34) is sleeved with a second spring (35), and the two ends of the second spring (35) are respectively fixedly connected to the upper end of the second sliding cylinder (27) and the second T-shaped rod (34). The side wall of the third spline sleeve (32) is fixedly connected to a second cam (36), and the lower end of the second cam (36) slides against the second T-shaped rod (34).

4. A high-frequency filter inductor for a new energy vehicle charging pile according to claim 3, characterized in that: in: A cutting mechanism is installed at the lower end of the base (1), and the cutting mechanism comprises two mounting blocks (37) symmetrically fixedly connected to the lower end of the base (1). The side walls of the two mounting blocks (37) are each provided with a slide groove (38). The inner wall of the slide groove (38) is sealingly and slidably connected with a cutter (39). A plurality of third springs (40) are commonly and fixedly connected between the inner wall of the slide groove (38) and the cutter (39). Two abutment plates (41) are symmetrically and fixedly connected to the lower end of the base (1). The side wall of the abutment plate (41) is arranged to fit the pin (4). The third spline sleeve (32) is connected to the slide groove (38) through a one-way air outlet pipe (42). A pressure relief valve is installed on the inner wall of the one-way air outlet pipe (42). A one-way air inlet hole (43) is opened on the inner wall of the third spline sleeve (32). An exhaust hole (65) is opened on the inner wall of the slide groove (38). An electromagnetic valve is installed on the inner wall of the exhaust hole (65).

5. The high-frequency filter inductor for a new energy vehicle charging pile according to claim 1, characterized in that: in: The base (1) is provided with a starting mechanism, the starting mechanism comprising a cavity (44) provided in the base (1), the inner wall of the cavity (44) being sealed and fixedly connected to a sealing plate (45), the sealing plate (45) dividing the interior of the cavity (44) into two parts: a liquid storage chamber (451) and a pump air chamber (452), the interior of the liquid storage chamber (451) being filled with dichloromethane (46), the inner wall of the liquid storage chamber (451) being sealed and slidably connected to a first slide plate (47), the inner wall of the pump air chamber (452) being sealed and slidably connected to a second slide plate (48), and the side wall of the first slide plate (47) being fixedly connected to a connecting rod (49). A rod (49), one end of the connecting rod (49) passes through the side wall of the sealing plate (45) and is fixedly connected to the second slide plate (48), a fourth spring (50) is sleeved on the side wall of the connecting rod (49), two ends of the fourth spring (50) are respectively fixedly connected to the side wall of the first slide plate (47) and the side wall of the sealing plate (45), the upper end of the base (1) is fixedly connected to a rotating joint (51) through a bracket, one end of the first spline sleeve (9) is fixedly connected to the rotating joint (51), and the inner wall of the cavity (44) is fixedly connected to a connecting pipe (52), and the other end of the connecting pipe (52) is fixedly connected to the rotating joint (51).

6. A high-frequency filter inductor for a new energy vehicle charging pile according to claim 5, characterized in that: in: A dehumidification mechanism is installed in the shielding cover (5), and the dehumidification mechanism comprises a vertical tube (53) fixedly connected to the top of the shielding cover (5), a conductive plate (54) is slidably connected to the inner wall of the vertical tube (53), a vertical rod (55) is fixedly connected to the lower end of the conductive plate (54), the lower end of the vertical rod (55) passes through the lower end of the vertical tube (53) and is fixedly connected to a drying box (56), a plurality of ventilation holes (57) are provided on the side wall of the drying box (56), and the drying box (56) is filled with an absorbent A water resin (58), a fifth spring (59) is sleeved on the side wall of the vertical rod (55), two ends of the fifth spring (59) are respectively fixedly connected to the lower end of the conductive plate (54) and the inner bottom of the vertical tube (53), a conductive ring (60) is fixedly connected to the inner bottom of the vertical tube (53), an electric heating ring (61) is fixedly connected to the inner wall of the air inlet (6), and the micro motor (11), the conductive plate (54), the conductive ring (60), the electric heating ring (61) and the power supply are electrically connected via wires.

7. The high-frequency filter inductor for a new energy vehicle charging pile according to claim 1, characterized in that: in: The inner walls of the air inlet (6) and the air outlet (7) are both fixedly connected with dustproof nets (62).

8. The high-frequency filter inductor for a new energy vehicle charging pile according to claim 3, characterized in that: in: A drain pipe (63) is fixedly connected to the side wall of the cooling box (26), and the other end of the drain pipe (63) is in communication with the cooling pipe (25). A plurality of heat sinks (64) are fixedly embedded at the lower end of the cooling box (26), and the plurality of heat sinks (64) are all made of a material with good heat dissipation performance.

9. The high-frequency filter inductor for a new energy vehicle charging pile according to claim 1, characterized in that: in: The magnetic core (2) is made of sendust material, and the base (1) is made of a material with good thermal conductivity.

10. A method for manufacturing a high-frequency filter inductor for a new energy vehicle charging pile, comprising a high-frequency filter inductor for a new energy vehicle charging pile as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Each winding (3) is covered with a 35 mm black sleeve. Each magnetic core (2) has two windings (3) assembled on both sides of the magnetic core (2) through the opening of the magnetic core (2), and the upper part of the magnetic core (2) is left empty; S2. Composite paper is placed at the bend of the winding (3) to prevent the insulation layer of the winding (3) from being scratched; S3, arranging the take-up wires of the assembled magnetic core (2) and winding (3) according to the opening positions of the base (1) and passing the take-up wires through the base (1) to fix them, and tinning the take-up wires passing through the base (1); S4, the gap between the base (1) and the magnetic core (2) is filled with glue; S5. Impregnation treatment.

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