Automatic take-up device of automobile charging pile and control method

Abstract

The invention relates to the technical field of charging piles, in particular to an automatic take-up device of an automobile charging pile and a control method.The automatic take-up device comprises a charging pile shell, a charging pile component, a charging pile operation panel, a charging gun, a charging wire, a take-up unit and a homing assembly; the homing assembly comprises two jacking blocks, two linkage units, two lifting units and two merging units, when the charging gun gets close to the charging pile shell, the jacking blocks drive the two linkage units to move and then drive the lifting units to operate, the lifting units drive the merging units to be located above the charging gun, at the moment, the merging units are started, and the charging gun is started; merging is completed above the charging gun, and then the merging unit moves downwards to drive the charging gun to be folded downwards for storage; therefore, by means of movement of the charging gun, the linkage unit can be driven to operate through the jacking block, the follow-up merging unit is located above the charging gun, folding operation is conducted on the charging gun, and winding and returning of the charging gun are automatically completed in a linkage mode.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to an automatic wire-winding device and a control method for a vehicle charging pile. Background Art

[0002] When using a car charging pile, the user is required to hold the charging gun, pull it out of the charging pile, and then insert the charging gun into the charging port of the electric vehicle for use. However, existing charging piles generally use a manual wire winding method, and the user needs to manually wind the charging cable and fix the charging gun. There are problems such as cumbersome operation, easy entanglement and knotting of the cable, and wear of the interface after long-term use. Especially in bad weather or at night, the manual wire winding experience is poor. Therefore, in order to improve the user experience, a motor is currently set inside the charging pile. After charging is completed, the user pulls out the charging gun. At this time, the control system controls the motor to rotate, driving the winding shaft to rotate, so that the wire is automatically wound.

[0003] In the aforementioned existing technology, after completing the automatic winding, some users may leave directly; at this time, the charging gun has only completed the winding, and the gun body has not returned to its original position, and is still perpendicular to the charging pile; even a small part is not completely wound up, which will cause the charging gun to hang outside the charging pile, ultimately affecting the appearance of the charging pile, and also causing the charging gun to be easily damaged by collision. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic wire-winding device and control method for a car charging pile, so as to solve the problem in the prior art that after completing the automatic wire-winding, some users may leave directly; at this time, the charging gun has only completed the winding, and the gun body has not returned to its original position and is still perpendicular to the charging pile; even a small part is not completely wound up, which will cause the charging gun to hang outside the charging pile, ultimately affecting the appearance of the charging pile and causing the charging gun to be easily damaged by collision.

[0005] To achieve the above objectives, the present invention provides an automatic wire-winding device for a car charging pile, comprising a charging pile housing, charging pile components, a charging pile operation panel, a charging gun, a charging cable, a winding unit, and a homing assembly, wherein the charging pile components are disposed inside the charging pile housing, the winding unit is electrically connected to the charging pile components, the charging pile operation panel is disposed on one side of the charging pile housing, the charging cable is disposed on the winding unit, and the charging gun is disposed at one end of the charging cable;

[0006] The homing assembly includes two pushing blocks, two linkage units, two lifting units and two merging units. The two pushing blocks are symmetrically arranged at one end of the charging gun, the two linkage units are symmetrically arranged inside the charging pile shell, the two lifting units are respectively arranged on the corresponding linkage units, and the two merging units are respectively arranged on the corresponding lifting units.

[0007] Among them, the winding unit includes a winding component, a winding shaft and an energy storage mechanism. The winding component is arranged inside the charging pile shell, the winding shaft is rotatably connected to the charging pile shell, the output end of the winding component is fixedly connected to the winding shaft, and the energy storage mechanism is arranged above the winding shaft.

[0008] In which, the energy storage mechanism includes a wear-resistant layer, an energy storage rotating plate, an energy storage rotating shaft, a torsion spring, a clamping block, a clamping slot and a limiting telescopic component. The wear-resistant layer is sleeved on the outside of the energy storage rotating plate, one end of the energy storage rotating shaft is rotatably connected to the inner wall of the charging pile shell, and the other end of the energy storage rotating shaft is fixedly connected to the energy storage rotating plate. The torsion spring is sleeved on the outside of the energy storage rotating shaft, the clamping block is arranged on the outside of the wear-resistant layer, and the limiting telescopic component is arranged on one side of the wear-resistant layer. The output end of the limiting telescopic component is fixedly connected to the clamping slot, and the clamping slot and the clamping block are adapted to each other.

[0009] In which, the linkage unit includes a rack, a gear, a first bevel gear, a second bevel gear, a bevel gear support shaft, a threaded rod and a threaded block, the charging pile housing has a winding port, the rack is located inside the winding port, the gear is arranged inside the charging pile housing, the gear and the rack are meshed with each other, the first bevel gear is arranged on one side of the gear, the second bevel gear and the first bevel gear are meshed with each other, the two ends of the bevel gear support shaft are respectively rotatably connected to the inner top wall of the charging pile housing and the second bevel gear, one end of the threaded rod is fixedly connected to the bottom of the second bevel gear, and the other end of the threaded rod is rotatably connected to the inside of the charging pile housing, the threaded block and the threaded rod are adapted to each other, and the charging pile housing also has a lifting slide, and the threaded block is slidably connected to the lifting slide.

[0010] Among them, the lifting unit includes a folding plate, a folding driving component, a stabilizing slide groove and a slider. The folding plate is rotatably connected to the threaded block through the folding driving component. The stabilizing slide groove is fixedly connected to the charging pile shell and is located on one side of the threaded rod. One end of the slider is slidably connected to the stabilizing slide groove, and the other end of the slider is fixedly connected to the threaded block.

[0011] Wherein, the merging unit includes a merging support shell, a merging drive component and a merging block, the merging support shell is arranged at one end of the folding plate, the merging drive component is arranged inside the merging support shell, and the output end of the merging drive component is fixedly connected to the merging block.

[0012] Among them, the homing assembly also includes an electromagnetic locking mechanism, a microswitch, a placement plate, two buffer mechanisms, two longitudinal limit shafts, two transverse limit shafts, two rack reset mechanisms and a placement slot. The electromagnetic locking mechanism is arranged above the charging gun, the microswitch is arranged inside the charging gun, the placement plate is arranged below the two racks, the charging gun is placed above the placement plate, the placement plate is rotatably connected to the two racks through a spring hinge, a pressure sensor is provided on the placement plate, the two buffer mechanisms are symmetrically arranged at one end of the charging gun, the two longitudinal limit shafts and the two transverse limit shafts are sequentially arranged inside the charging pile shell and distributed on the outside of the charging cable, the two rack reset mechanisms are respectively arranged below the corresponding racks, the placement slot is arranged on one side of the charging pile shell, and the placement slot and the charging gun are adapted to each other.

[0013] Among them, the buffer mechanism includes a buffer mounting plate and a plurality of damping buffer rods. The buffer mounting plate is arranged at one end of the charging gun. The plurality of damping buffer rods are arranged in sequence inside the buffer mounting plate. The telescopic ends of the plurality of damping buffer rods are fixedly connected to the pushing block, and the pushing block and the rack are supported against each other.

[0014] Among them, the rack reset mechanism includes a rack reset component and a connecting rod. The rack reset component is arranged on the inner side wall of the charging pile housing. The output end of the rack reset component is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the rack.

[0015] The present invention also provides an automatic wire-winding control method for a car charging pile, which uses the automatic wire-winding device for the car charging pile described above, and includes the following steps:

[0016] The user can use any of the charging pile operation panels, which have buttons and voice commands, or send a line retraction command through the mobile phone APP;

[0017] The main control module built into the charging pile component verifies the charging status, and if it is charging, refuses to execute and prompts;

[0018] If charging is not performed, the electromagnetic locking mechanism is powered off, the charging gun is released, and the winding unit starts low-speed pre-winding;

[0019] The reel is equipped with a torque sensor, which switches to high-speed reeling mode when a sudden change in cable tension is detected;

[0020] The charging pile component has a built-in encoder. When the remaining length of the detection cable is ≤0.5m, the winding unit gradually slows down to a stop.

[0021] The energy storage mechanism is activated to assist the charging cable in completing the last 0.5m of line retraction, ensuring that the gun head is completely returned to its original position;

[0022] The winding unit is self-locked, the gun head is locked, and the system enters a standby state.

[0023] The present invention provides an automatic wire-winding device and control method for a car charging pile. The user can control the winding unit to start through the charging pile operation panel, thereby winding the charging wire and driving the charging gun to move. When the charging gun approaches the charging pile shell, the pushing block drives the two linkage units to move, thereby driving the lifting unit to operate. The lifting unit drives the merging unit to be located above the charging gun. At this time, the merging unit is started and completes merging above the charging gun. Then, the merging unit moves downward, driving the charging gun to fold down and be stored. Thus, by utilizing the movement of the charging gun, the linkage unit can be driven by the pushing block to operate, so that the subsequent merging unit is located above the charging gun to perform the folding operation of the charging gun. Finally, the winding and returning of the charging gun are automatically completed in a linkage manner. There is no need for the user to deliberately place the charging gun, thus avoiding the charging gun hanging outside the charging pile, ensuring the appearance of the charging pile, and avoiding the charging gun and the charging pile being perpendicular to each other, causing it to be too protruding and damaged by accidental contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0025] Figure 1 It is a structural schematic diagram of the automatic wire-reeling device of the automobile charging pile of the present invention.

[0026] Figure 2 It is a cross-sectional view of the automatic wire-reeling device of the automobile charging pile of the present invention.

[0027] Figure 3 The present invention Figure 2 A magnified view of the local structure at point A.

[0028] Figure 4 The present invention Figure 2 A magnified view of the local structure at point B.

[0029] Figure 5 It is a diagram of the internal structure of the charging pile housing of the present invention.

[0030] Figure 6 It is a structural schematic diagram of the linkage unit of the present invention.

[0031] Figure 7 It is a side view of the linkage unit of the present invention.

[0032] Figure 8 The present invention Figure 7 CC line cross-sectional view.

[0033] Figure 9 The present invention Figure 7 A magnified view of the local structure at point D.

[0034] Figure 10 The present invention is a flowchart of the steps of the automatic wire-winding control method of the automobile charging pile.

[0035] 1-charging pile shell, 2-charging pile components, 3-charging pile operation panel, 4-charging gun, 5-charging line, 6-top block, 7-winding component, 8-winding shaft, 9-wear-resistant layer, 10-energy storage rotating plate, 11-energy storage rotating shaft, 12-torsion spring, 13-block, 14-slot, 15-limiting telescopic component, 16-rack, 17-gear, 18-first bevel gear, 19-second bevel gear, 20-bevel gear support shaft, 21-threaded rod, 22-threaded block, 23-winding mouth, 24-lifting slide, 25-folding plate, 26-folding drive component, 27-stable slide, 28-slider, 29-merging support shell, 30-merging drive component, 31-merging block, 32-electromagnetic locking mechanism, 33-micro switch, 34-placement plate, 35-longitudinal limit shaft, 36-lateral limit shaft, 37-placement groove, 38-pressure sensor, 39-buffer mounting plate, 40-damping buffer rod, 41-rack reset component, 42-connecting rod, 43-torque sensor, 44-stroke sensor, 45-spring hinge. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] See also Figures 1 to 9The present invention provides an automatic wire-winding device for a car charging pile, comprising a charging pile housing 1, a charging pile component 2, a charging pile operation panel 3, a charging gun 4, a charging line 5, a winding unit and a homing assembly, wherein the homing assembly comprises two jacking blocks 6, two linkage units, two lifting units and two merging units, the winding unit comprises a winding component 7, a winding shaft 8 and an energy storage mechanism, the energy storage mechanism comprises a wear-resistant layer 9, an energy storage rotating plate 10, an energy storage rotating shaft 11, a torsion spring 12, a clamping block 13, a clamping slot 14 and a limiting telescopic component 15, the linkage unit comprises a rack 16, a gear 17, a first bevel gear 18, a second bevel gear 19, a bevel gear support shaft 20, The threaded rod 21 and the threaded block 22, the charging pile housing 1 has a winding mouth 23, the lifting unit includes a folding plate 25, a folding drive component 26, a stabilizing slide 27 and a slider 28, the merging unit includes a merging support shell 29, a merging drive component 30 and a merging block 31, the homing assembly also includes an electromagnetic locking mechanism 32, a micro switch 33, a placement plate 34, two buffer mechanisms, two longitudinal limit shafts 35, two transverse limit shafts 36, two rack 16 reset mechanisms and a placement groove 37, the buffer mechanism includes a buffer mounting plate 39 and multiple damping buffer rods 40, and the rack 16 reset mechanism includes a rack reset component 41 and a connecting rod 42.

[0038] The charging pile components 2 are disposed inside the charging pile housing 1, the reeling unit is electrically connected to the charging pile components 2, the charging pile operation panel 3 is disposed on one side of the charging pile housing 1, the charging cable 5 is disposed on the reeling unit, the charging gun 4 is disposed at one end of the charging cable 5, two push blocks 6 are symmetrically disposed at one end of the charging gun 4, two linkage units are symmetrically disposed inside the charging pile housing 1, two lifting units are respectively disposed on corresponding linkage units, and two merging units are respectively disposed on corresponding lifting units. A user can control the reeling unit to start through the charging pile operation panel 3, thereby reeling the charging cable 5 and moving the charging gun 4. When the charging gun 4 approaches the charging pile housing 1, the push block 6 drives the two linkage units to move, thereby driving the lifting unit to operate. The lifting unit drives the merging unit to be located above the charging gun 4. At this time, the merging unit starts, completes merging above the charging gun 4, and then moves downward, driving the charging gun 4 to fold downward and be stored.

[0039] Secondly, the winding component 7 is arranged inside the charging pile housing 1, the winding shaft 8 is rotatably connected to the charging pile housing 1, the output end of the winding component 7 is fixedly connected to the winding shaft 8, and the energy storage mechanism is arranged above the winding shaft 8. The winding component 7 is a self-locking motor. When the winding component 7 is started, it drives the winding shaft 8 to rotate, and then reels the charging cable 5. In addition, when unwinding, the winding shaft 8 is driven by the charging cable 5 to rotate and unwind, and the energy storage mechanism is activated to store energy at this time. In addition, in order to further improve the safety of the winding device, a torque sensor 43 is provided on the winding component 7, which can detect the torque and perform dynamic protection against torque overload. By real-time monitoring of the motor output torque, the shutdown protection and alarm are automatically triggered under abnormal working conditions to avoid damage to the cable or mechanical structure. The specific operation is: first cut off the motor drive power supply; then activate the electromagnetic locking mechanism to prevent the gun head from falling off; at this time, an audible and visual alarm is issued through the buzzer (1kHz / 3 seconds) and the charging pile LED light strip (flashing red); finally, the "winding resistance is abnormal, please check the cable" prompt is pushed to the user APP.

[0040] At the same time, the wear-resistant layer 9 is sleeved on the outside of the energy storage rotary plate 10, one end of the energy storage shaft 11 is rotatably connected to the inner wall of the charging pile housing 1, and the other end of the energy storage shaft 11 is fixedly connected to the energy storage rotary plate 10, the torsion spring 12 is sleeved on the outside of the energy storage shaft 11, the clamping block 13 is arranged on the outside of the wear-resistant layer 9, and the limiting telescopic component 15 is arranged on one side of the wear-resistant layer 9, and the output end of the limiting telescopic component 15 is fixedly connected to the clamping slot 14, and the clamping slot 14 and the clamping block 13 are adapted to each other. When the reel 8 is unwinding and rotating, it contacts the wear-resistant layer 9, thereby driving the energy storage rotating plate 10 and the energy storage rotating shaft 11 to rotate, and storing energy through the torsion spring 12. After the block 13 is located on one side of the card slot 14, the limiting telescopic component 15 is started to drive the card slot 14 to move and cooperate with the block 13 to limit the position. At this time, the energy storage rotating plate 10 cannot continue to rotate, thereby playing a role of storing energy and waiting to be released during subsequent rewinding; at this time, if the reel 8 continues to unwind and rotate, it will slip between the wear-resistant layer 9. Although it will increase a certain amount of resistance, since the wear-resistant layer 9 and the reel 8 are not tightly fitted, it will not hinder the pulling out of the charging gun 4. The user only needs to slightly By slightly increasing the pulling force, the charging gun 4 can be pulled out smoothly; in addition, after the charging cable 5 is wound up, the card slot 14 is moved out of the card block 13, and the torsion spring 12 rebounds, releasing the stored energy, so that the energy storage turn plate 10 rotates, and the wear-resistant layer 9 contacts the freely movable winding shaft 8, thereby driving the winding shaft 8 to rotate and wind up, assisting in completing the last 0.5m of the charging cable 5, ensuring that the gun head is completely returned to its position, and reducing the motor load while increasing the winding speed; in addition, the material of the wear-resistant layer 9 is chrome-plated steel, which has strong wear resistance. After the wear-resistant layer 9 stops rotating, the winding shaft 8 can still be forced to rotate. Over time, the wear-resistant layer 9 will be subject to certain wear, so it needs to be maintained and replaced regularly.

[0041] In addition, the charging pile housing 1 has a winding port 23, the rack 16 is located inside the winding port 23, the gear 17 is arranged inside the charging pile housing 1, the gear 17 and the rack 16 are meshed with each other, the first bevel gear 18 is arranged on one side of the gear 17, the second bevel gear 19 and the first bevel gear 18 are meshed with each other, the two ends of the bevel gear support shaft 20 are respectively rotatably connected to the inner top wall of the charging pile housing 1 and the second bevel gear 19, one end of the threaded rod 21 is fixedly connected to the bottom of the second bevel gear 19, and the other end of the threaded rod 21 is rotatably connected to the inside of the charging pile housing 1, the threaded block 22 and the threaded rod 21 are adapted to each other, and the charging pile housing 1 also has a lifting slide 24, and the threaded block 22 is slidably connected to the lifting slide 24. When the pushing block 6 moves, the rack 16 is pushed to move, thereby driving the gear 17 to rotate, the gear 17 drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the second bevel gear 19 to rotate, the bevel gear support shaft 20 reinforces and supports the second bevel gear 19, the second bevel gear 19 drives the threaded rod 21 to rotate, and the threaded rod 21 drives the threaded block 22 to move upward.

[0042] Then, the folding plate 25 is rotatably connected to the threaded block 22 via the folding drive component 26. The stabilizing groove 27 is fixedly connected to the charging pile housing 1 and is located on one side of the threaded rod 21. One end of the slider 28 is slidably connected to the stabilizing groove 27, and the other end of the slider 28 is fixedly connected to the threaded block 22. The threaded block 22 drives the folding plate 25 to move upward, thereby positioning the merging unit above the charging gun 4. When the merging unit completes merging above the charging gun 4, the folding drive component 26 is activated, driving the folding plate 25 to rotate and fold downward, thereby driving the merging unit to fold and store the charging gun 4 downward. At the same time, when the threaded block 22 moves, the slider 28 slides in the stabilizing groove 27, thereby increasing stability. In addition, the folding drive component 26 is a self-locking motor.

[0043] Again, the merging support shell 29 is provided at one end of the folding plate 25, and the merging drive component 30 is provided inside the merging support shell 29. The output end of the merging drive component 30 is fixedly connected to the merging block 31. The merging support shell 29 supports the internal components, and the merging drive component 30 is a self-locking electric push rod. When the merging drive component 30 is activated, it drives the merging block 31 to move, and then the two merging blocks 31 are docked and merged above the charging gun 4, and then driven downward by the folding plate 25, thereby driving the charging gun 4 to fold downward and be stored. Therefore, through the movement of the push block 6 and the operation of the linkage unit, the merging block 31 can be quickly moved to the top of the charging gun 4. The operation is simple and fast, and the charging gun 4 can be quickly stored and folded.

[0044] In addition, the electromagnetic locking mechanism 32 is arranged above the charging gun 4, the micro switch 33 is arranged inside the charging gun 4, the placing plate 34 is arranged below the two racks 16, the charging gun 4 is placed above the placing plate 34, and the placing plate 34 is rotatably connected to the two racks 16 through a spring hinge 45. A pressure sensor 38 is provided on the placing plate 34, and the two buffer mechanisms are symmetrically arranged at one end of the charging gun 4. The two longitudinal limit shafts 35 and the two transverse limit shafts 36 are sequentially arranged inside the charging pile housing 1 and distributed on the outside of the charging cable 5. The two rack 16 reset mechanisms are respectively arranged below the corresponding racks 16, and the placing groove 37 is arranged on one side of the charging pile housing 1, and the placing groove 37 is adapted to the charging gun 4. When the charging gun 4 is inserted into the car charging port, the electromagnetic locking mechanism 32 is started to limit the position to prevent the charging gun 4 from falling. The micro switch 33 can detect whether the charging gun 4 is inserted in place. When it is detected that it is in place, the electromagnetic locking mechanism 32 can be started to operate; after the user has used the charging gun 4, the charging gun 4 must be placed on the placement plate 34. At this time, the pressure value of the pressure sensor 38 changes, indicating that the user has completed the placement, and then the winding operation and the user's checkout operation can be performed. Otherwise, the system can issue a reminder to the user, thereby preventing the user from randomly abandoning the charging gun 4 on the ground, resulting in winding failure or jamming. During winding, the buffer mechanism can provide a buffering effect to prevent the charging gun 4 from quickly contacting the rack 16 and causing damage, through the cooperation of the longitudinal limit shaft 35 and the transverse limit shaft 36. , completing the longitudinal and lateral limiting of the charging cable 5, making its winding and unwinding more stable, the rack 16 reset mechanism can facilitate the resetting and extension of the rack 16, and then when the charging gun 4 is stored, it is convenient for the push block 6 to contact the rack 16 again, and the placement groove 37 is used to store the folded charging gun 4. After storage, the charging gun 4 will no longer be perpendicular to the charging gun 4 shell, thereby reducing the protruding area, avoiding damage caused by collision with unknown objects, and improving the overall appearance of the charging pile; in addition, when the charging gun 4 is folded and stored, the placement plate 34 can be rotated downward to avoid hindering the folding operation of the charging gun 4. When the charging gun 4 is removed for use, the placement plate 34 is reset by the action of the spring hinge 45, so as to temporarily place and support the charging gun 4 again.

[0045] Thus, the buffer mounting plate 39 is mounted at one end of the charging gun 4, and a plurality of damping and buffering rods 40 are sequentially mounted within the buffer mounting plate 39. The telescopic ends of the damping and buffering rods 40 are fixedly connected to the push block 6, and the push block 6 and the rack 16 abut against each other. The buffer mounting plate 39 supports the damping and buffering rods 40. When the push block 6 contacts the rack 16, the damping and buffering rods 40 act as a buffer, preventing damage to the charging gun 4 caused by excessive force.

[0046] Finally, the rack reset component 41 is arranged on the inner wall of the charging pile housing 1 , and the output end of the rack reset component 41 is fixedly connected to one end of the connecting rod 42 , and the other end of the connecting rod 42 is fixedly connected to the rack 16 . The rack reset component 41 is a non-self-locking electric push rod, and when the power is off, after the rack 16 is pushed, it can drive the connecting rod 42 to move, thereby making the rack reset component 41 extend and retract, and supporting the rack 16. After power is turned on, the output end can be extended and retracted; thereby, the rack 16 can be driven by the connecting rod 42 to enter the charging pile housing 1 for storage, reducing the protruding area outside the charging pile when not in use, and can also drive the rack 16 to move out of the interior of the charging pile housing 1 so that it can subsequently contact the pushing block 6; in addition, a stroke sensor 44 is also provided on the rack reset component 41, which can detect the distance moved by the connecting rod 42, thereby detecting the moving stroke of the rack 16. When the preset stroke is reached, it indicates that the charging gun 4 has been completely moved to the foldable storage position, and the merging unit can be started through the control system.

[0047] When using the automatic wire-winding device of a car charging pile of this embodiment, the user can control the winding unit to start through the charging pile operation panel 3, thereby winding the charging wire 5 and driving the charging gun 4 to move; when the charging gun 4 approaches the charging pile housing 1, the push block 6 drives the two linkage units to move, thereby driving the lifting unit to operate, and the lifting unit drives the merging unit to be located above the charging gun 4. At this time, the merging unit starts and completes the merging above the charging gun 4, and then the merging unit moves downward, driving the charging gun 4 to fold downward for storage;

[0048] With the above-mentioned structural arrangement, the movement of the charging gun 4 can be used to drive the linkage unit to operate through the push block 6, so that the subsequent merging unit is located above the charging gun 4, so as to perform the folding operation of the charging gun 4. Finally, the retraction and return of the charging gun 4 are automatically completed through linkage, without the user having to deliberately place the charging gun 4, thus preventing the charging gun 4 from being hung outside the charging pile, ensuring the appearance of the charging pile, and preventing the charging gun 4 from being perpendicular to the charging pile and protruding too much and being damaged by accidental contact;

[0049] In addition, a torque sensor 43 is provided on the winding shaft 8, which can monitor the tension of the charging cable 5 in real time and dynamically adjust the motor output power to avoid overload or jamming of the winding. The winding component 7 also integrates a planetary reduction motor with a rated torque ≥5N·m, which supports forward and reverse operation; an emergency stop button is also provided on the charging pile operation panel 3 to stop the winding of the charging gun 4 in time in an emergency. At the same time, an overcurrent protection function is also provided to improve charging safety. The micro switch 33 can also be used to detect the position of the gun head of the charging gun 4 and prevent accidental touch locking function; through the charging pile operation panel 3, the charging pile has a one-button human-computer interaction interface. At the same time, the charging pile operation panel 3 also integrates three operation modes: physical buttons, voice control and mobile phone APP remote triggering, which is convenient for users to use and significantly improves the user experience.

[0050] See also Figure 10 The present invention also provides an automatic wire-winding control method for a car charging pile, comprising the following steps:

[0051] S1: The user uses any of the charging pile operation panels 3, which have buttons and voice commands, or can send a line retraction command through the mobile phone APP;

[0052] S2: The main control module built into the charging pile component 2 verifies the charging status. If the charging is in progress, the execution is rejected and a prompt is given;

[0053] S3: If charging is not performed, the electromagnetic locking mechanism is powered off, the charging gun 4 is released, and the winding unit starts low-speed pre-winding;

[0054] S4: The reel 8 is provided with a torque sensor 43, which switches to a high-speed reeling mode when a sudden change in cable tension is detected;

[0055] S5: The charging pile component 2 has a built-in encoder. When the remaining length of the detection cable is ≤0.5m, the winding unit gradually slows down to a stop.

[0056] S6: The energy storage mechanism is activated to assist the charging cable 5 in completing the last 0.5m of winding, ensuring that the gun head is completely returned to its original position;

[0057] S7: The winding unit is self-locked, the gun head is locked, and the system enters the standby state.

[0058] Among them, the user uses any of the charging pile operation panels 3, which has buttons and voice, and can also send winding instructions through the APP on the mobile phone; the main control module built into the charging pile component 2 verifies the charging status, and if it is charging, it refuses to execute and prompts; if it is not charging, the electromagnetic locking mechanism is powered off, releasing the charging gun 4, and at the same time the winding unit starts low-speed pre-winding; the winding shaft 8 is equipped with a torque sensor 43, which switches to high-speed winding mode when a sudden change in cable tension is detected; the charging pile component 2 has a built-in encoder, and when the remaining length of the cable is detected to be ≤0.5m, the winding unit gradually slows down to stop; the energy storage mechanism starts to assist the charging cable 5 to complete the last 0.5m of winding, ensuring that the gun head is fully returned to its position; the winding unit self-locks, locks the gun head, and the system enters standby mode.

[0059] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. An automatic wire-winding device for a car charging pile, comprising a charging pile housing, charging pile components, a charging pile operation panel, a charging gun, a charging wire, and a winding unit, wherein the charging pile components are arranged inside the charging pile housing, the winding unit is electrically connected to the charging pile components, the charging pile operation panel is arranged on one side of the charging pile housing, the charging wire is arranged on the winding unit, and the charging gun is arranged at one end of the charging wire, characterized in that: Also included is a homing component; The homing assembly includes two pushing blocks, two linkage units, two lifting units and two merging units. The two pushing blocks are symmetrically arranged at one end of the charging gun, the two linkage units are symmetrically arranged inside the charging pile shell, the two lifting units are respectively arranged on the corresponding linkage units, and the two merging units are respectively arranged on the corresponding lifting units.

2. The automatic wire-winding device for a car charging pile according to claim 1, characterized in that: The winding unit includes a winding component, a winding shaft and an energy storage mechanism. The winding component is arranged inside the charging pile shell, the winding shaft is rotatably connected to the charging pile shell, the output end of the winding component is fixedly connected to the winding shaft, and the energy storage mechanism is arranged above the winding shaft.

3. The automatic wire-winding device for a car charging pile according to claim 2, characterized in that: The energy storage mechanism includes a wear-resistant layer, an energy storage rotating plate, an energy storage rotating shaft, a torsion spring, a clamping block, a clamping slot and a limiting telescopic component. The wear-resistant layer is sleeved on the outside of the energy storage rotating plate, one end of the energy storage rotating shaft is rotatably connected to the inner wall of the charging pile shell, and the other end of the energy storage rotating shaft is fixedly connected to the energy storage rotating plate. The torsion spring is sleeved on the outside of the energy storage rotating shaft, the clamping block is arranged on the outside of the wear-resistant layer, and the limiting telescopic component is arranged on one side of the wear-resistant layer. The output end of the limiting telescopic component is fixedly connected to the clamping slot, and the clamping slot and the clamping block are adapted to each other.

4. The automatic wire-winding device for a car charging pile according to claim 3, characterized in that: The linkage unit includes a rack, a gear, a first bevel gear, a second bevel gear, a bevel gear support shaft, a threaded rod and a threaded block. The charging pile housing has a winding port, the rack is located inside the winding port, the gear is arranged inside the charging pile housing, the gear and the rack are meshed with each other, the first bevel gear is arranged on one side of the gear, the second bevel gear and the first bevel gear are meshed with each other, the two ends of the bevel gear support shaft are respectively rotatably connected to the inner top wall of the charging pile housing and the second bevel gear, one end of the threaded rod is fixedly connected to the bottom of the second bevel gear, and the other end of the threaded rod is rotatably connected to the inside of the charging pile housing, the threaded block and the threaded rod are adapted to each other, and the charging pile housing also has a lifting slide, and the threaded block is slidably connected to the lifting slide.

5. The automatic wire-winding device for a car charging pile according to claim 4, characterized in that: The lifting unit includes a folding plate, a folding driving component, a stabilizing slide groove and a slider. The folding plate is rotatably connected to the threaded block through the folding driving component. The stabilizing slide groove is fixedly connected to the charging pile housing and is located on one side of the threaded rod. One end of the slider is slidably connected to the stabilizing slide groove, and the other end of the slider is fixedly connected to the threaded block.

6. The automatic wire-winding device for a car charging pile according to claim 5, characterized in that: The merging unit includes a merging support shell, a merging drive component and a merging block. The merging support shell is arranged at one end of the folding plate, the merging drive component is arranged inside the merging support shell, and the output end of the merging drive component is fixedly connected to the merging block.

7. The automatic wire-winding device for a car charging pile according to claim 6, characterized in that: The homing assembly also includes an electromagnetic locking mechanism, a microswitch, a placement plate, two buffer mechanisms, two longitudinal limit shafts, two transverse limit shafts, two rack reset mechanisms and a placement groove. The electromagnetic locking mechanism is arranged above the charging gun, the microswitch is arranged inside the charging gun, the placement plate is arranged below the two racks, the charging gun is placed above the placement plate, the placement plate is rotatably connected to the two racks through a spring hinge, a pressure sensor is provided on the placement plate, the two buffer mechanisms are symmetrically arranged at one end of the charging gun, the two longitudinal limit shafts and the two transverse limit shafts are sequentially arranged inside the charging pile shell and distributed on the outside of the charging cable, the two rack reset mechanisms are respectively arranged below the corresponding racks, the placement groove is arranged on one side of the charging pile shell, and the placement groove and the charging gun are adapted to each other.

8. The automatic wire-reeling device for a car charging pile according to claim 7, characterized in that: The buffer mechanism includes a buffer mounting plate and multiple damping buffer rods. The buffer mounting plate is arranged at one end of the charging gun. The multiple damping buffer rods are sequentially arranged inside the buffer mounting plate. The telescopic ends of the multiple damping buffer rods are fixedly connected to the pushing block, and the pushing block and the rack are supported against each other.

9. The automatic wire-winding device for a car charging pile according to claim 8, characterized in that: The rack reset mechanism includes a rack reset component and a connecting rod. The rack reset component is arranged on the inner side wall of the charging pile housing. The output end of the rack reset component is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the rack.

10. A method for controlling automatic wire take-up of a car charging pile, using the automatic wire take-up device of the car charging pile according to claim 9, characterized in that: The steps include: The user can use any of the charging pile operation panels, which have buttons and voice commands, or send a line retraction command through the mobile phone APP; The main control module built into the charging pile component verifies the charging status, and if it is charging, refuses to execute and prompts; If charging is not performed, the electromagnetic locking mechanism is powered off, the charging gun is released, and the winding unit starts low-speed pre-winding; The reel is equipped with a torque sensor, which switches to high-speed reeling mode when a sudden change in cable tension is detected; The charging pile component has a built-in encoder. When the remaining length of the detection cable is ≤0.5m, the winding unit gradually slows down to a stop. The energy storage mechanism is activated to assist the charging cable in completing the last 0.5m of line retraction, ensuring that the gun head is completely returned to its original position; The winding unit is self-locked, the gun head is locked, and the system enters a standby state.

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