A direct current charging pile of a telescopic cable and a charging station

Abstract

The application discloses a telescopic cable direct-current charging pile and charging station, relates to the technical field of charging piles, and comprises a cable, a cable box, a cable sleeve, an arrangement plate and a driving wheel, the cable is arranged in the cable box in a double-row serpentine bending mode, the cable sleeve comprises a side cable sleeve and a plurality of connecting cable sleeves, the connecting cable sleeves are sleeved at the turning points of the wave crests and the wave troughs of the double-row serpentine bending cable, and the telescopic cable direct-current charging pile is characterized in that the cable is arranged in the cable box in a double-row serpentine bending mode, the cable sleeve, the arrangement plate and the driving wheel are cooperated, the dynamic winding and unwinding guidance and the bending mode locking of the cable are realized, the complex rotation of the cable connection part caused by the frequent winding and unwinding of the cable is avoided, the dependence on the rotary joint is reduced, and the abrasion of the brush and the conductive ring caused by the frequent rotation of the rotary joint is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging piles, in particular to a direct-current charging pile with telescopic cable and a charging station. BACKGROUND

[0002] A direct-current charging pile is a charging device that can directly provide direct-current power for the battery of an electric vehicle, commonly known as a "fast charging pile". A direct-current charging station is a place that provides fast charging services for electric vehicles, which is equipped with multiple direct-current charging piles with telescopic cables.

[0003] A direct-current charging pile system with telescopic cable is disclosed in Chinese Patent No. CN118269723A, which includes a direct-current charging pile body with telescopic cable for providing power supply for electric vehicles, and a support mechanism for providing a support base for the direct-current charging pile body with telescopic cable, which is arranged below the direct-current charging pile body with telescopic cable. By controlling two groups of blocking pieces to be in an open state through a second driving mechanism, and then driving the blowing mechanism to make circular motion around the cable in the support through a first driving mechanism, the blowing mechanism can uniformly perform hot air blowing operation on the charging plug of the cable to achieve the effect of quickly drying the charging plug. At the same time, the use of a humidity sensor and a controller enables the humidity sensor to monitor the moisture content in the inner cavity of the support shell and transmit the signal to the controller. When the moisture content in the support shell is higher than the set value, the controller controls the second motor, the first motor, the electric fan, and the heating element to work, thereby achieving the effect of automatic drying without the need for the user to perform manual drying before use, effectively avoiding the phenomenon of the user forgetting to dry, and thus effectively ensuring the safety of the use of the direct-current charging pile system with telescopic cable.

[0004] During the winding and unwinding process of the cable of the charging pile, a rotary joint is usually used to realize electrical connection at one end connected to the power conversion module. The rotary joint is a special electromechanical device that allows the cable to rotate while maintaining stable electrical signal and power transmission. The brush and conductive ring in the rotary joint are key wear-prone components. During frequent cable winding and unwinding, the brush and the conductive ring are constantly rubbed against each other. When the brush wears to a certain extent, the contact pressure between the brush and the conductive ring decreases, resulting in an increase in contact resistance. This not only causes energy loss during electrical energy transmission, but also may cause local overheating. Once the local temperature is too high, it will further accelerate the damage of the brush and the conductive ring, and may even cause electrical faults such as short circuit or open circuit.

[0005] Therefore, the direct-current charging pile with telescopic cable and the charging station are proposed to solve the above problems. SUMMARY

[0006] In view of the problems existing in the prior art, the present application is proposed.

[0007] To solve the above technical problems, the application provides the following technical solutions: a DC charging pile with telescopic cable, comprising:

[0008] A charging component, comprising a cable box, the surface of the cable box is configured with an inlet and an outlet;

[0009] A cable arranged in double-row serpentine bending in the cable box;

[0010] A cable sleeve, comprising a side cable sleeve and a plurality of connection cable sleeves, the plurality of connection cable sleeves are symmetrically distributed along the left and right side walls of the cable box, and the plurality of connection cable sleeves are sleeved at the turning points of the wave crests and troughs of the double-row serpentine bending cable; the number of the side cable sleeves is two groups, which are arranged on the front and rear side walls of the cable box and correspond to the inlet and outlet of the cable box respectively, and are used for leading out and leading in the cable;

[0011] An arrangement plate, comprising an upper arrangement plate and a lower arrangement plate, the connection cable sleeves of the wave crest and trough sections of the double-row serpentine bending cable are guided by the upper arrangement plate and the lower arrangement plate to be arranged in linear array, and each column of the wave crest and trough sections of the cable is independently configured with a single-row connection cable sleeve group;

[0012] A plurality of drive wheels are arranged in the single-row connection cable sleeve group, the drive wheels are embedded in the radial distance between two adjacent connection cable sleeves, the rotation shaft of the drive wheel is perpendicular to the cable running direction, and the rim of the drive wheel forms rolling contact with the surface of the cable.

[0013] As a preferred scheme of the DC charging pile with telescopic cable, both ends of the plurality of upper arrangement plates and the plurality of lower arrangement plates are fixedly provided with linkage adjustment plates.

[0014] As a preferred scheme of the DC charging pile with telescopic cable, the mobile assembly comprises a high-rigidity linear guide rail, a double-drive module and a servo driving mechanism, the servo driving mechanism drives the two linkage adjustment plates to move through the double-drive module, so that the upper arrangement plate and the lower arrangement plate connected with the linkage adjustment plates move towards or away from each other under the guidance of the high-rigidity linear guide rail, so as to adjust the effective arrangement length of the cable in the cable box.

[0015] As a preferred scheme of the DC charging pile with telescopic cable, the high-rigidity linear guide rail is configured as four guide rails distributed longitudinally in the cable box, the four guide rails are symmetrically arranged in the inner walls of the two sides of the cable box, and the two ends of the guide rails are firmly connected with the inner walls of the cable box through high-strength bolts.

[0016] As a preferred scheme of the DC charging pile of the telescopic cable described in the application, wherein: the double transmission module comprises a mounting base, transmission gears, elastic telescopic pipes and pull ropes, the number of the transmission gears is two groups, which are symmetrically installed on both sides of the mounting base, the number of the elastic telescopic pipes is two groups, which are respectively vertically connected with the upper arrangement plate and the mounting base and the lower arrangement plate and the mounting base, the pull ropes are arranged inside the elastic telescopic pipes, and two ends of the pull ropes are respectively fixed on the shaft body of the transmission gear and the arrangement plate.

[0017] As a preferred scheme of the DC charging pile of the telescopic cable described in the application, wherein: the servo drive mechanism comprises a double-shaft motor, two screw rods and a controller; wherein the double-shaft motor is fixedly installed at the middle position of the cable box, the output shafts thereof extend to the left and right sides, are connected with one end of the two screw rods, and the threads of the screw rods are matched with the tooth shapes of the transmission gears, the double-shaft motor accurately adjusts the output power and the rotation direction according to the instruction of the controller to drive the transmission gears to rotate.

[0018] As a preferred scheme of the DC charging pile of the telescopic cable described in the application, wherein: the upper arrangement plate or the lower arrangement plate comprises an upper parallel plate and a lower parallel plate, the upper parallel plate and the lower parallel plate jointly constrain and position the driving wheel and the connecting cable hoop; the connecting cable hoop is configured as a cylindrical structure matched with the cable, two symmetrical connecting shafts are extended from the surface of the connecting cable hoop, and the connecting cable hoop is fixedly assembled to the upper parallel plate and the lower parallel plate through the connecting shafts.

[0019] The axial direction of the connecting cable hoop is perpendicular to the arrangement plate, so that the cable passes through the connecting cable hoop in a direction perpendicular to the arrangement plate; a through groove is formed in the side surface of the connecting cable hoop, and the rim of the driving wheel is arranged to extrude the cable through the through groove.

[0020] As a preferred scheme of the DC charging pile of the telescopic cable described in the application, wherein: the connecting shafts extend downward through the lower parallel plate, and a group of linkage gears are embedded in the end portions of the connecting shafts; the driving wheel comprises a waist-shaped wheel body and a center extension shaft, the center extension shaft extends out of the waist-shaped wheel body, is clamped and penetrates through the upper parallel plate and the lower parallel plate, one end of the center extension shaft penetrating through the lower parallel plate is connected with a driving gear, the driving gear and the linkage gears are staggered, in the two adjacent groups of linkage gears, the group of linkage gears closer to the driving gear directly forms meshing connection with the driving gear, and the other group of linkage gears is driven by the driving gear through the transmission belt.

[0021] As a preferred scheme of the DC charging pile with the telescopic cable described in the application, a set of helical gears is arranged on the central extension shaft of the driving wheel at the side edge, the surface of the helical gears engages with a set of driven mechanisms, and the helical gears are driven to rotate through the driven mechanisms; wherein the driven mechanisms include straight gears and combination wheels, the number of the straight gears is multiple, the straight gears are fixed to the inner wall of the cable box, and are arranged at both side ends of each column of the connecting cable hoop set, the number of the combination wheels is multiple, the combination wheels correspond to the straight gears, and rotate on the linkage adjusting plate.

[0022] The combination wheel includes two sets of coaxial driven gears, and the two sets of driven gears are in meshing transmission with the straight gears and the helical gears, respectively.

[0023] A charging station includes a sunshade and a plurality of DC charging piles with telescopic cables, and the plurality of DC charging piles with telescopic cables are arranged in rows within the coverage range of the sunshade.

[0024] The DC charging pile with the telescopic cable of the application realizes dynamic winding and unwinding guidance and bending form locking of the cable by arranging the cable in a double-column serpentine shape in the cable box, and cooperating with the cable hoop, the arrangement plate and the driving wheel, avoids the complex rotation of the cable connection part caused by the frequent winding and unwinding of the cable, thereby reducing the dependence on the rotary joint, avoiding the wear of the brush and the conductive ring caused by the frequent rotation of the rotary joint; secondly, through the cooperative interaction unit of “cable hoop-driving wheel-cable hoop”, the rim of the driving wheel forms rolling contact with the surface of the cable to realize the winding and unwinding of the cable, instead of transmitting power through friction contact like the rotary joint, effectively avoiding the energy loss and local overheating phenomenon caused by the increase of contact resistance, thereby avoiding the risk of accelerated component damage and electrical faults such as short circuit and open circuit caused by local high temperature, and improving the stability and safety of the electrical connection of the charging pile. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is the overall structure schematic diagram of the charging station in the application;

[0027] Figure 2 It is the overall structure schematic diagram of the charging part in the application;

[0028] Figure 3 It is the display schematic diagram of the double-column serpentine cable in the application;

[0029] Figure 4 is a display axonometric view of a double-helix cable in the present application;

[0030] Figure 5 is an enlarged view of the A part structure of Figure 4

[0031] Figure 6 is a display view of the arrangement of the driving wheel and the connecting cable clamp in the present application;

[0032] Figure 7 is an enlarged view of the B part structure of Figure 6

[0033] Figure 8 is an enlarged view of the C part structure of Figure 6

[0034] Figure 9 is an enlarged view of the D part structure of Figure 6

[0035] is a schematic view of the detailed structure at the driving wheel in the present application. Figure 10

[0036] Reference signs: 100, charging component; 110, shell; 120, cable box; 130, cable; 200, cable clamp; 210, side cable clamp; 220, connecting cable clamp; 221, connecting shaft; 222, through slot; 223, linkage gear; 300, arrangement plate; 310, upper parallel plate; 320, lower parallel plate; 330, connecting base; 400, driving wheel; 410, waist-shaped wheel body; 420, center extension shaft; 421, helical gear; 430, acting gear; 500, mounting base; 600, linkage adjustment plate; 700, moving assembly; 710, high-rigidity linear guide rail; 720, double-drive module; 721, mounting base plate; 722, drive gear; 723, elastic telescopic tube; 724, pull rope; 730, servo drive mechanism; 731, double-shaft motor; 732, screw rod; 800, transmission belt; 900, driven mechanism; 910, straight bar gear; 920, combined wheel; 921, first driven gear; 922, second driven gear. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in combination with the drawings of the specification.

[0038] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.​​​​

[0039] Second, the "one embodiment" or "an embodiment" referred to herein means a specific feature, structure, characteristic, or combination of features and / or characteristics described in at least one implementation of the application. The various appearances of "in one embodiment" or "an embodiment" in the specification are not necessarily all referring to the same embodiment.

[0040] Embodiment 1

[0041] Referring to Figures 1-10 As shown in the figure, the first embodiment of the application provides a DC charging pile of a telescopic cable, which comprises a charging component 100, a cable sleeve 200, an arrangement plate 300, a driving wheel 400, and a moving assembly 700. Wherein:

[0042] The charging component 100 comprises a shell 110 and a cable box 120 arranged in front of the shell 110. There is a certain gap between the cable box 120 and the shell 110, which facilitates the outward emission of heat from the cable box 120 or the shell 110. A group of cables 130 is led out from the shell 110. The cables 130 are inserted through the wire inlet arranged on the surface of the cable box 120, arranged in double-row serpentine in the cable box 120, and then led out through the wire outlet arranged on the surface of the cable box 120. The end of the cable 130 led out of the cable box 120 is connected with a charging gun, which is inserted into the special gun seat slot arranged on the surface of the shell 110.

[0043] The cable sleeve 200 comprises a side cable sleeve 210 and a connecting cable sleeve 220. The number of the connecting cable sleeve 220 is multiple, which is arranged on the left and right side walls of the cable box 120 and symmetrically distributed along the left and right side walls of the cable box 120. The multiple connecting cable sleeves 220 are sleeved on the turning points of the peaks and valleys of the double-row serpentine cable 130. The number of the side cable sleeve 210 is two groups, which is arranged on the front and rear side walls of the cable box 120, corresponding to the wire inlet and the wire outlet of the cable box 120 respectively. The rigid positioning is used to realize the directional guidance of the cable 130 leading-in and leading-out route, so as to avoid the displacement of the end of the cable 130 due to external force pulling.

[0044] In an embodiment, although the conventional charging pile adopts the winding reel to accommodate the cable 130 by arranging the winding reel inside, the spiral winding mode of the winding reel makes the layers of the cable 130 closely adhere to each other, which causes the heat between the cables 130 to be difficult to dissipate, and easily causes the risk of local overheating. However, the cable 130 arranged in a serpentine shape in the present application forms a through heat dissipation channel in the axial direction, and the heat flow can be quickly conducted out along the bending gap of the cable 130. In addition, a plurality of heat dissipation holes are arranged on the surface of the cable box 120, and the plurality of heat dissipation holes are configured as a gradually expanding waist-shaped hole array design, the cross section of which is arranged in a horn-shaped structure, the flared end of which faces the outside of the cable box 120, and is staggered arranged along the left and right side walls of the cable box 120, so as to make the external cold air flow into the heat dissipation holes through the large opening outside the heat dissipation holes, and realize heat exchange.

[0045] The arrangement plate 300 includes an upper arrangement plate and a lower arrangement plate, and the connecting cable 220 of the double-row serpentine curved cable 130 wave peak segment and wave valley segment is guided by the upper arrangement plate and the lower arrangement plate to be arranged in a linear array, and each row of wave peak segment and wave valley segment of the cable 130 is independently configured with a single-row connecting cable group;

[0046] The driving wheel 400 is arranged in the single-row connecting cable group, the number of the driving wheel 400 is multiple, the driving wheel 400 is embedded in the radial distance between the adjacent two connecting cables 220, the rotating shaft of the driving wheel 400 is perpendicular to the direction of the cable 130, the rim of the driving wheel 400 forms rolling contact with the surface of the cable 130, and forms a cooperative interaction unit of “cable-cable driving wheel 400-cable”, and simultaneously realizes the functions of cable bending mode locking and dynamic winding and unwinding guidance.

[0047] Specifically, when the driving wheel 400 is controlled to rotate, the cable 130 produces rolling friction with the rim of the driving wheel 400 under the limiting guidance of the connecting cable 220, the surface of the cable 130 is subjected to radial extrusion to form directional slip, and the low-resistance movement of the cable 130 along the serpentine path is realized; when the driving wheel 400 stops rotating, the cable 130 is subjected to the rigid clamping force and friction force of the connecting cable 220 and the driving wheel 400, forming a bidirectional mechanical constraint, and completely inhibiting the axial movement of the cable 130.

[0048] For example, the surface of the side cable 210 is nested with a mounting base 500, and the side cable 210 is mounted on the front and rear side walls of the cable box 120 through the mounting base 500.

[0049] Embodiment 2

[0050] Referring to Figures 3-6 As shown in the figure, the second embodiment of the present application is based on the previous embodiment, and the difference is that the two ends of the plurality of upper arrangement plates and the plurality of lower arrangement plates are fixedly provided with linkage adjustment plates 600.

[0051] The moving assembly 700 includes a high-rigidity linear guide rail 710, a double transmission module 720, and a servo driving mechanism 730. The servo driving mechanism 730 drives the two linkage adjustment plates 600 to move through the double transmission module 720, so that the upper and lower arrangement plates connected with the linkage adjustment plates 600 move towards or away from each other under the guidance of the high-rigidity linear guide rail 710, to adjust the effective arrangement length of the serpentine bending section cable 130 in the cable box 120.

[0052] The high-rigidity linear guide rail 710 is configured as four guide rails longitudinally distributed in the cable box 120, which are symmetrically arranged on the inner walls of the left and right sides of the cable box 120, and the two ends of the guide rails are firmly connected to the inner walls of the cable box 120 through high-strength bolts.

[0053] The double transmission module 720 includes two groups of installation base plates 721, two groups of transmission gears 722, two groups of elastic expansion tubes 723, and two groups of pull ropes 724. The two groups of transmission gears 722 are symmetrically arranged on the two sides of the installation base plate 721. The two groups of elastic expansion tubes 723 are respectively connected to the upper arrangement plate and the installation base plate 721, and the lower arrangement plate and the installation base plate 721. The pull rope 724 is arranged inside the elastic expansion tube 723, and the two ends are respectively fixed to the shaft of the transmission gear 722 and the arrangement plate 300.

[0054] Specifically, when the servo driving mechanism 730 drives the transmission gear 722 to rotate, the pull rope 724 is wound around the shaft of the transmission gear 722 and is pulled to move the upper and lower arrangement plates towards each other against the contraction force of the elastic expansion tube 723. When reversed, the gear releases the pull rope 724, and the elastic expansion tube 723 relies on its own elasticity to reset and push the upper and lower arrangement plates to move away from each other to reset. By controlling the number of gear rotation, the distance between the arrangement plates 300 is accurately adjusted, thereby changing the expansion amount of the serpentine bending section of the cable 130.

[0055] The servo driving mechanism 730 includes a double-shaft motor 731, two screws 732, and a controller. The double-shaft motor 731 is fixedly installed at the middle position of the cable box 120, and the output shafts extend to the left and right sides and are connected to one end of the two screws 732. The threads of the screws 732 are matched with the teeth of the transmission gears 722. The double-shaft motor 731 accurately adjusts the output power and rotation direction according to the instructions of the controller to drive the transmission gears 722 to rotate.

[0056] Specifically, the controller adopts a programmable logic controller, which is connected with the double-shaft motor 731 through a signal line, and can monitor and control the running state of the double-shaft motor 731 in real time. The controller can accurately adjust the rotating speed, rotating direction and running time of the double-shaft motor 731 according to the externally input instructions. For example, when it is needed to shorten the effective arrangement length of the cable 130, the controller sends a forward rotation instruction to the double-shaft motor 731, and the double-shaft motor 731 drives the screw rod 732 to rotate forward. Since the screw rod 732 is engaged with the transmission gear 722, the transmission gear 722 rotates with it, and the pull rope 724 starts to be wound on the shaft body of the transmission gear 722 to be rolled up, overcoming the contraction force of the elastic expansion pipe 723, and pulling the upper and lower arrangement plates to move towards each other.

[0057] Conversely, when it is needed to increase the effective arrangement length of the cable 130 serpentine bending section, the controller sends a reverse rotation instruction to the double-shaft motor 731, and the double-shaft motor 731 drives the screw rod 732 to rotate reversely, and the transmission gear 722 rotates reversely and releases the pull rope 724, and the elastic expansion pipe 723 relies on its own elasticity to reset and push the upper and lower arrangement plates to move away from each other to reset.

[0058] By accurately controlling the number of rotations of the double-shaft motor 731, the rotating angle of the transmission gear 722 can be accurately controlled, and then the distance between the arrangement plates 300 can be accurately adjusted, and the extension and contraction amount of the cable 130 serpentine bending section can be changed.

[0059] Among them, a button for controlling the controller is arranged outside the cable box 120, and the button module is embedded in the protective panel of the right side wall of the cable box 120 in an embedded installation manner. The button module integrates three kinds of function keys: an adjusting button and an emergency stop button. The adjusting button adopts a double-arrow design, corresponding to the "lengthen" and "shorten" directions respectively. When the button with the upward arrow is pressed, the controller drives the double-shaft motor 731 to rotate reversely, and the screw rod 732 drives the transmission gear 722 to make the cable 130 serpentine bending section lengthen. When the button with the downward arrow is pressed, the controller operates in the forward direction, and the cable 130 shortens. In addition, a micro LED state display screen is also arranged beside the button module, which can display the extension and contraction state, working mode, fault code and other information of the current cable 130 in real time.

[0060] Embodiment 3

[0061] Reference Figures 3-10For the third embodiment of the present application, which is based on the previous embodiment, the difference is that the upper or lower arrangement plate comprises an upper parallel plate 310 and a lower parallel plate 320, which jointly constrain and position the driving wheel 400 and the connecting cable hoop 220, which is configured as a cylindrical structure that is adapted to the cable 130, and two symmetrical connecting shafts 221 extend from the surface of the connecting cable hoop 220, and the connecting cable hoop 220 is fixedly assembled to the upper parallel plate 310 and the lower parallel plate 320 through the connecting shafts 221;

[0062] The axis direction of the connecting cable hoop 220 is perpendicular to the arrangement plate 300, so that the cable 130 passes through the connecting cable hoop 220 in a direction perpendicular to the arrangement plate 300; the side surface of the connecting cable hoop 220 is provided with a through slot 222, and the rim of the driving wheel 400 extrudes the cable 130 through the through slot 222.

[0063] The inner wall of the connecting cable hoop 220 and the surface of the through slot 222 are both smooth, which reduces the friction coefficient between the connecting cable hoop 220 and the cable 130 and improves the smoothness of the movement of the cable 130.

[0064] The connecting shafts 221 extend downward through the lower parallel plate 320, and a set of linkage gears 223 are nested at the end portions thereof; the rod body surface of the linkage gears 223 is embedded with a transmission belt 800; the driving wheel 400 comprises a waist-shaped wheel body 410 and a center extension shaft 420, which extends out from the inside of the waist-shaped wheel body 410 and is clamped and penetrates through the upper parallel plate 310 and the lower parallel plate 320; the center extension shaft 420 is connected with an action gear 430 at the end thereof that penetrates through the lower parallel plate 320; the action gear 430 and the linkage gears 223 are staggered arranged; in the two adjacent sets of linkage gears 223, the set of linkage gears 223 that is closer to the action gear 430 directly forms meshing connection with the action gear 430, and the other set of linkage gears 223 achieves transmission with the action gear 430 through the transmission belt 800. This staggered transmission layout enables the action gear 430 to simultaneously control the running state of multiple transmission paths.

[0065] A set of bevel gears 421 are assembled on the center extension shaft 420 of the driving wheel 400 located at the side edge, the surface of the bevel gears 421 is engaged with a set of driven mechanisms 900, and the bevel gears 421 are driven to rotate through the driven mechanisms 900; wherein the driven mechanisms 900 comprise straight bar gears 910 and combination wheels 920, the number of the straight bar gears 910 is multiple, which are fixed to the inner wall of the cable box 120 and are arranged at the two side ends of each column of connecting cable hoop groups, and the number of the combination wheels 920 is multiple, which correspond to the straight bar gears 910 and rotate on the linkage adjustment plate 600;

[0066] The combination wheel 920 includes two coaxial sets of driven gears, which are in meshing transmission with the straight gear 910 and the helical gear 421 respectively. The two sets of driven gears are a first driven gear 921 and a second driven gear 922 respectively, the first driven gear 921 is in meshing transmission with the straight gear 910, and the second driven gear 922 is in meshing transmission with the helical gear 421.

[0067] Exemplarily, a set of connecting bases 330 are fastened to the two sides of the upper parallel plate 310 and the lower parallel plate 320, and the connecting bases 330 are installed on the linkage adjusting plate 600.

[0068] A charging station includes a direct-current charging pile with a retractable cable, and also includes a sunshade and a plurality of direct-current charging piles with retractable cables arranged in a row within the coverage range of the sunshade.

[0069] Working principle: when the user selects the "shorten" instruction through the button module, the controller receives the electrical signal and starts the cable 130 recovery process. At this time, the double-shaft motor 731 starts to rotate forward according to the preset program, and its output shaft drives the left and right screw rods 732 to rotate clockwise synchronously. The threads of the screw rods 732 are in close meshing with the teeth of the transmission gear 722, and the transmission gear 722 is forced to rotate counterclockwise around its own axis under the drive of the screw rods 732. This rotating action directly acts on the pull rope 724 wound on the shaft body of the transmission gear 722, and the pull rope 724 is gradually tightened under the winding action of the transmission gear 722, and overcomes the contraction resistance of the elastic expansion pipe 723, generating a sustained pulling force.

[0070] Under the action of this pulling force, the upper arrangement plate and the lower arrangement plate move towards each other along the guide path of the high-rigidity linear guide rail 710 through the linkage adjusting plate 600. The four longitudinally distributed guide rails are fixed to the inner wall of the cable box 120 through high-strength bolts, providing rigid support for the linear movement of the arrangement plate 300, ensuring the accuracy of the movement trajectory and avoiding deflection or jamming. As the distance between the arrangement plates 300 decreases, the combination wheel 920 fixed to the side edges of the arrangement plates 300 translates towards the middle of the cable box 120. The first driven gear 921 of the combination wheel 920 is always in meshing state with the straight gear 910 fixed to the inner wall of the cable box 120.

[0071] Reference Figure 5 When the combination wheel 920 moves longitudinally downward, the first driven gear 921 is forced to roll clockwise along the tooth surface of the straight gear 910, thereby driving the combination wheel 920 to rotate counterclockwise around its own axis.

[0072] The second driven gear 922 of the combination wheel 920 is in spatial orthogonal engagement with the helical gear 421 at the end of the center extension shaft 420 of the drive wheel 400. When the combination wheel 920 rotates counterclockwise, the second driven gear 922 transmits the rotating torque to the helical gear 421, forcing the helical gear 421 to rotate clockwise around the axis of the drive wheel 400. The waist-shaped wheel body 410 of the drive wheel 400 rotates synchronously with the helical gear 421 through the center extension shaft 420, and its rim passes through the through slot 222 on the side of the connection cable hoop 220, exerting radial extrusion force on the surface of the cable 130. The cable 130, guided by the limiting guide of the connection cable hoop 220, generates rolling friction with the rim of the drive wheel 400, and slides along the serpentine path to the middle of the cable box 120, the distance between the crests and troughs of the serpentine bending section gradually decreases, and the effective arrangement length shortens accordingly.

[0073] At the same time, the active gear 430 at the end of the center extension shaft 420 of the drive wheel 400 links the adjacent gears in two ways: for the closest linkage gear 223 to the active gear 430, the active gear 430 directly engages with it, forming rigid transmission; for the farther linkage gear 223, flexible linkage is achieved through the transmission belt 800 embedded in the surface of the rod body. This staggered transmission layout ensures that the rotational speed of all drive wheels 400 is synchronized, avoiding the twisting or jamming of the cable 130 due to local resistance differences. When the cable 130 shortens to the target length, the controller controls the double-shaft motor 731 to stop running, the drive wheel 400 is stationary, and the cable 130 is subjected to bidirectional mechanical constraints under the combined action of the rigid clamping of the connection cable hoop 220 and the friction force of the rim of the drive wheel 400, completely suppressing axial movement.

[0074] When the user presses the "elongation" button, the controller sends a reverse rotation instruction to the double-shaft motor 731, and the output shaft of the motor rotates counterclockwise. The two screws 732 rotate synchronously counterclockwise under the drive of the motor, and the transmission gear 722 engaged with them is forced to rotate clockwise, and the pull rope 724 wound on the shaft of the transmission gear 722 is gradually loosened. The elastic expansion tube 723 resets itself by relying on its own elasticity, pushing the upper and lower arrangement plates to move away, to expand the distance between the arrangement plates 300.

[0075] The back of the upper and lower arrangement plates drives the combination wheel 920 to move towards the upper and lower sides of the cable box 120. At this time, the first driven gear 921 of the combination wheel 920 rolls along the straight gear 910 tooth surface counterclockwise, forcing the combination wheel 920 to rotate clockwise as a whole around its own axis. The second driven gear 922 of the combination wheel 920 transmits the clockwise rotation torque to the bevel gear 421 of the drive wheel 400, driving the bevel gear 421 to rotate counterclockwise. The waist-shaped wheel body 410 of the drive wheel 400 rotates counterclockwise synchronously with the bevel gear 421, and the flange thereof exerts extrusion on the cable 130 skin, promoting the cable 130 to move in the connecting cable hoop 220. The smooth treatment of the inner wall of the connecting cable hoop 220 and the surface of the through slot 222 further reduces the frictional resistance, so that the cable 130 naturally extends along the serpentine path, the distance between the wave crests and troughs of the serpentine section increases, and the effective arrangement length is effectively extended.

[0076] The connecting cable hoop 220 of the device is fixed at the turning points of the wave crests and troughs of the serpentine cable 130, and the bending shape of the cable 130 is constrained by rigid positioning; the drive wheel 400 is embedded between adjacent connecting cable hoops 220, and dynamic driving force is provided by the rolling contact between the flange and the cable 130. When the drive wheel 400 rotates, the cable 130 slides directionally under the guidance of the connecting cable hoop 220; when the drive wheel 400 is stationary, the cable 130 is locked by the clamping of the connecting cable hoop 220 and the friction of the drive wheel 400, forming a double control mechanism of "dynamic driving-static locking".

[0077] The elastic expansion tube 723 of the device serves as a buffer medium for the transmission of the pull rope 724, absorbs mechanical impact when the pull rope 724 is wound, and ensures smooth movement of the arrangement plate 300; when the pull rope 724 is released, the elastic expansion tube 723 resets the arrangement plate 300 by its own elasticity, avoiding dependence on external power. This design not only reduces the requirement for motor power, but also improves the system reliability.

[0078] Of course, the above content is only a preferred embodiment of the present application, and cannot be considered as limiting the scope of the embodiments of the present application. The present application is also not limited to the above examples, and equivalent changes and improvements made by those skilled in the art within the essential scope of the present application should be attributed to the scope of the patent of the present application.

[0079] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0080] Secondly, the drawings of the embodiments disclosed in the application only involve structures related to the embodiments disclosed in the application, other structures can be referred to the general design, and in the case of no conflict, the same embodiments and different embodiments of the application can be combined with each other.

[0081] Finally, the above is only the preferred embodiment of the application, and is not used to limit the application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A DC charging station with a retractable cable, characterized in that, include: The charging component (100) includes a cable box (120) with a cable inlet and a cable outlet on its surface; Cable (130) is arranged in a double row of serpentine bends inside the cable box (120); The cable clamp (200) includes a side clamp (210) and multiple connecting clamps (220). The multiple connecting clamps (220) are symmetrically distributed along the left and right side walls of the cable box (120). The multiple connecting clamps (220) are fitted onto the crests and troughs of the double-row serpentine cable (130). There are two sets of side clamps (210), which are set on the front and rear side walls of the cable box (120) and correspond to the cable inlet and outlet of the cable box (120) respectively, for leading out and leading in the cable (130). The arrangement plate (300) includes an upper arrangement plate and a lower arrangement plate. The connecting clamps (220) of the peak and trough sections of the double-row serpentine cable (130) are guided by the upper and lower arrangement plates to be arranged in a linear array. Each column of the cable (130) with peak and trough sections is independently configured with a single row of connecting clamps. Multiple drive wheels (400) are arranged in a single row of the connecting wire clamps. The drive wheels (400) are embedded within the radial distance between two adjacent connecting wire clamps (220). The shaft of the drive wheel (400) is perpendicular to the direction of the cable (130), and its rim forms a rolling contact with the surface of the cable (130). The upper or lower arrangement plate includes an upper parallel plate (310) and a lower parallel plate (320), which together constrain and position the drive wheel (400) and the connecting clamp (220); the connecting clamp (220) is configured as a cylindrical structure adapted to the cable (130), and two symmetrical connecting shafts (221) extend from the surface of the connecting clamp (220), which are fixedly assembled to the upper parallel plate (310) and the lower parallel plate (320) through the connecting shafts (221). The axial direction of the connecting clamp (220) is perpendicular to the arrangement plate (300), so that the cable (130) passes through the connecting clamp (220) in a direction perpendicular to the arrangement plate (300); a through groove (222) is provided on the side of the connecting clamp (220), and the rim of the drive wheel (400) passes through the through groove (222) to squeeze the cable (130).

2. The DC charging pile with retractable cable as described in claim 1, characterized in that: Both ends of the upper and lower arrangement plates are fixedly provided with linkage adjustment plates (600).

3. The DC charging pile with retractable cable as described in claim 2, characterized in that, It also includes a moving assembly (700); the moving assembly (700) includes a high-rigidity linear guide rail (710), a dual transmission module (720) and a servo drive mechanism (730). The servo drive mechanism (730) drives two linkage adjustment plates (600) to move through the dual transmission module (720), so that the upper and lower arrangement plates connected to the linkage adjustment plates (600) move towards each other or away from each other under the guidance of the high-rigidity linear guide rail (710) to adjust the effective arrangement length of the cables (130) in the cable box (120).

4. The DC charging pile with retractable cable as described in claim 3, characterized in that: The high-rigidity linear guide rail (710) is configured as four longitudinally distributed guide rails inside the cable box (120). The four guide rails are symmetrically arranged on both sides of the inner wall of the cable box (120), and the two ends of the guide rails are firmly connected to the inner wall of the cable box (120) by high-strength bolts.

5. The DC charging pile with retractable cable as described in claim 4, characterized in that: The dual transmission module (720) includes a mounting base plate (721), transmission gears (722), elastic telescopic tubes (723), and pull ropes (724). There are two sets of transmission gears (722), which are symmetrically installed on both sides of the mounting base plate (721). There are two sets of elastic telescopic tubes (723), which are vertically connected to the upper arrangement plate and the mounting base plate (721) and the lower arrangement plate and the mounting base plate (721), respectively. The pull ropes (724) are inserted inside the elastic telescopic tubes (723), and their two ends are fixed to the shaft of the transmission gears (722) and the arrangement plate (300), respectively.

6. The DC charging pile with retractable cable as described in claim 5, characterized in that; The servo drive mechanism (730) includes a dual-axis motor (731), two screws (732), and a controller. The dual-axis motor (731) is fixedly installed in the middle of the cable box (120), and its output shaft extends to the left and right sides respectively, connecting to one end of the two screws (732). The threads of the screws (732) are adapted to the tooth profile of the transmission gear (722). The dual-axis motor (731) precisely adjusts its output power and rotation direction according to the instructions of the controller to drive the transmission gear (722) to rotate.

7. The DC charging pile with a retractable cable as described in claim 6, characterized in that: The connecting shaft (221) extends downward through the lower parallel plate (320), and a set of linkage gears (223) is nested at its end. A transmission belt (800) is embedded in the surface of the rod of the linkage gear (223). The drive wheel (400) includes a waist-shaped wheel body (410) and a central extension shaft (420). The central extension shaft (420) extends from the inside of the waist-shaped wheel body (410), and is engaged and passes through the upper parallel plate (310) and the lower parallel plate (320). The central extension shaft (420) passes through one end of the lower parallel plate (320) and is connected to an action gear (430). The action gear (430) and the linkage gear (223) are arranged alternately. In two adjacent sets of linkage gears (223), the set of linkage gears (223) that is closer to the action gear (430) directly meshes with the action gear (430), and the other set of linkage gears (223) is driven by the action gear (430) through the transmission belt (800).

8. The DC charging pile with retractable cable as described in claim 7, characterized in that: A set of helical gears (421) is mounted on the central extension shaft (420) of a set of drive wheels (400) located on the side. A set of driven mechanisms (900) meshes with the surface of the helical gears (421), and the helical gears (421) are driven to rotate by the driven mechanisms (900). The driven mechanism (900) includes a straight gear (910) and a combination wheel (920). There are multiple sets of straight gears (910), which are fixed to the inner wall of the cable box (120) and are set on both sides of each row of connecting wire clamps. There are multiple sets of combination wheels (920), which correspond to the straight gears (910) and rotate on the linkage adjustment plate (600). The combined wheel (920) includes two sets of coaxial driven gears, which are respectively meshed with a straight gear (910) and a helical gear (421).

9. A charging station comprising a DC charging pile with a retractable cable as described in any one of claims 1-8, characterized in that: It also includes a sunshade and multiple DC charging stations with retractable cables, with the multiple retractable DC charging stations arranged in rows within the coverage area of ​​the sunshade.

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