Smart charging station with automatically retractable charging cable

Abstract

This utility model belongs to the field of charging piles, specifically relating to an intelligent charging pile with automatic retractable charging cables. It includes a housing, an intelligent control circuit board, a cable reel, a conductive slip ring, and a drive mechanism. The conductive slip ring is located on the central axis of the cable reel and electrically connected to the charging cable. The drive mechanism is located inside the housing and is connected to the cable reel for driving the cable reel to perform the action of winding and unwinding the charging cable. One side of the cable reel has an axially outwardly extending convex ring. Multiple rolling positioning components are circumferentially distributed around the convex ring inside the housing. Each rolling positioning component rolls in contact with the edge of the convex ring away from the center of the cable reel to jointly limit the rotation of the cable reel radially and axially. The multiple positioning roller components can achieve radial and axial limiting of the rotation of the cable reel, ensuring that the cable reel does not wobble left or right or jump radially when operating at high speed or with frequent start-stop cycles, ensuring that the cable can be tightly and smoothly wound.

Description

Technical Field

[0001] This utility model belongs to the field of charging pile technology, specifically relating to an intelligent charging pile with an automatically retractable charging cable. Background Technology

[0002] Charging piles, also known as electric vehicle charging stations or electric vehicle power supply equipment, are devices that provide electrical energy to electric vehicles, enabling them to store enough electricity to support their operation. When charging an electric vehicle, the charging gun needs to be pulled out of the charging pile's mounting box. Because the car's charging interface is low to the ground, using the charging gun requires dragging the charging cable, which is long and heavy, making it time-consuming, laborious, and difficult to operate. Furthermore, each time the cable is charged, its insulation layer rubs against the ground, causing damage and shortening its lifespan, potentially leading to safety hazards. Therefore, smart charging piles with automatically retractable charging cables have emerged on the market.

[0003] Existing smart charging stations with automatic retractable charging cables cannot ensure that the charging cable of the charging gun is neatly coiled on the reel, which easily leads to problems such as knots and tangles in the charging cable, causing the charging cable of the charging gun to be unable to retract and be used normally. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an intelligent charging station with an automatically retractable charging cable, which avoids the charging cable from getting tangled or messy and ensures that the charging cable can be used normally.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an intelligent charging pile with automatic retractable charging cable, comprising a housing, an intelligent control circuit board, a reel rotatably disposed within the housing, a conductive slip ring, and a drive mechanism. The conductive slip ring is disposed at the central axis of the reel and electrically connected to the charging cable. The drive mechanism is disposed within the housing and is connected to the reel for transmission, thereby driving the reel to perform the action of retracting and extending the charging cable. One side of the reel has a convex ring extending axially outward. Multiple rolling positioning components are circumferentially distributed around the convex ring within the housing. Each rolling positioning component rolls in contact with the edge of the convex ring away from the center of the reel, thereby jointly limiting the rotation of the reel radially and axially.

[0006] In some embodiments, the rolling positioning assembly includes a positioning shaft and a bushing fixedly disposed in the housing. The bushing is rotatably sleeved on the positioning shaft, and the outer peripheral wall of the bushing is provided with an annular groove for rolling contact that contacts the outer edge of the convex ring.

[0007] In some embodiments, the housing is provided with a cable laying mechanism that is drivenly connected to the cable reel. The cable laying mechanism includes a support frame, a lead screw, and a cable laying plate. The support frame is disposed inside the housing, and the lead screw is rotatably mounted on the support frame. The axial direction of the lead screw is parallel to the axial direction of the cable reel. The driving force of the cable reel can drive the lead screw to rotate synchronously. The cable laying plate is slidably disposed on the support frame and threadedly connected to the lead screw, and slides back and forth along its axial direction under the drive of the lead screw. The cable laying plate has a guide groove for guiding the charging cable. The guide groove is used to guide and constrain the charging cable during the cable laying process.

[0008] In some embodiments, a gear is provided on the lead screw, and a transmission gear that meshes with the gear is provided on the winding reel.

[0009] In some embodiments, a limit detection component is provided on the support frame at one side corresponding to the lead screw. The limit detection component includes a take-up limit switch and a release limit switch. The take-up limit switch and the release limit switch are respectively fixed on the support frame at the two ends of the lead screw and are electrically connected to the control circuit board module. When the cable tray is at two extreme positions during the reciprocating sliding process, it actuates the take-up limit switch or the release limit switch to send a limit signal to the control circuit board module.

[0010] In some embodiments, the drive mechanism includes a motor and a transmission assembly. The intelligent control circuit board is disposed inside the housing and is electrically connected to the motor, and is used to control the start, stop and direction of the motor. The transmission assembly is connected between the output shaft of the motor and the winding reel, and is used to transmit the power of the motor to the winding reel.

[0011] In some embodiments, the transmission assembly includes a drive gear disposed on the output shaft of the motor, and the drive gear meshes with the transmission gear of the winding reel.

[0012] In some embodiments, the outer peripheral wall of the reel has a winding space for winding a charging cable, one end of the charging cable is connected to a pressure block in the winding space, and the other end of the charging cable is connected to a charging gun.

[0013] In some embodiments, a spiral isolation strip is provided on the inner wall of the winding space along the axial direction of the winding reel, and the isolation strip and the winding space together form a spiral cable placement groove for orderly accommodating charging cables.

[0014] In some embodiments, a positioning turntable is fixedly installed inside the housing at the central axis position corresponding to the winding reel, the conductive slip ring is fixed on the positioning turntable, a rotating disk is fixedly installed at the central axis position of the winding reel, and a ball bearing is provided between the positioning turntable and the rotating disk.

[0015] The beneficial effects of this invention are as follows: Multiple rolling positioning components are added inside the housing. These components roll in contact with the edge of the convex ring furthest from the center of the cable reel. The multiple positioning rollers can radially and axially limit the rotation of the cable reel, ensuring that the reel does not wobble or jump radially during high-speed or frequent start-stop operation. This ensures the cable is tightly and smoothly wound, while reducing noise and wear. It also prevents the charging cable from tangling or becoming twisted, ensuring normal extension and retraction of the charging cable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model; Figure 3 This is an exploded view of an embodiment of the present utility model; Figure 4 This is an internal structural diagram of an embodiment of the present utility model; Figure 5 This is a perspective view of the wiring mechanism according to an embodiment of the present utility model. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments: like Figure 1-3 As shown, an intelligent charging station with automatic retractable charging cable includes a housing 1, an intelligent control circuit board 2, a reel 3 rotatably disposed within the housing 1, a conductive slip ring 4, and a drive mechanism 5. The conductive slip ring 4 is disposed at the central axis of the reel 3 and electrically connected to the charging cable 6. The drive mechanism 5 is disposed within the housing 1 and is drively connected to the reel 3 to drive the reel 3 to perform the action of retracting and extending the charging cable 6. One side of the reel 3 has an axially outwardly extending protruding ring portion 31. Multiple rolling positioning components 7 are circumferentially distributed around the protruding ring portion 31 within the housing 1. Each rolling positioning component 7 makes rolling contact with the edge of the protruding ring portion 31 away from the center of the reel 3, so as to jointly limit the rotation of the reel 3 radially and axially. The rolling positioning component 7 includes a positioning shaft 71 and a bushing 72 fixedly disposed within the housing 1. The bushing 72 is rotatably sleeved on the positioning shaft 71. The outer peripheral wall of the bushing 72 is provided with an annular groove 721 that makes rolling contact with the outer edge of the protruding ring portion 31. The annular groove of the bushing provides radial and axial restraint on the outer edge of the convex ring, ensuring that the winding reel does not wobble left and right or jump radially when the reel is running at high speed or with frequent start and stop, ensuring that the cable can be wound tightly and flat, while reducing noise and wear.

[0022] like Figure 3-5As shown, a cable laying mechanism 8, which is connected to the reel 3, is installed inside the housing 1. The cable laying mechanism 8 includes a support frame 81, a lead screw 82, and a cable laying plate 83. The support frame 81 is installed inside the housing 1, and the lead screw 82 is rotatably mounted on the support frame 81. The axial direction of the lead screw 82 is parallel to the axial direction of the reel 3. The driving force of the reel 3 can drive the lead screw 82 to rotate synchronously. The cable laying plate 83 is slidably mounted on the support frame 81 and threadedly connected to the lead screw 82, and slides back and forth along its axial direction under the drive of the lead screw 82. A guide groove 831 for guiding the charging cable 6 is provided on the cable laying plate 83. The guide groove 831 is used to guide and constrain the charging cable 6 during the cable laying process. A guide rod 811 is provided on the support frame 81, and the cable laying plate 83 has a guide hole 832 sleeved on the guide rod 811. The cable winding mechanism employs a screw drive structure design. The cable winding plate guides the cable winding and unwinding, ensuring that the charging cable remains neatly and orderly wound on the reel during repeated winding and unwinding processes. This effectively prevents tangling and tangling, ensuring the normal extension and retraction of the charging cable and improving winding and unwinding efficiency. A gear 821 is linked to the screw 82, and a transmission gear 32 meshes with the gear 821 on the reel 3. The gear structure drives the reel and screw, ensuring reliable rotation of the screw and making the transmission more reliable and stable. A limit detection component 84 is provided on the support frame 81 on one side corresponding to the lead screw 82. The limit detection component 84 includes a take-up limit switch 841 and a release limit switch 842. The take-up limit switch 841 and the release limit switch 842 are respectively fixed on the support frame 81 at the two ends of the lead screw 82 and are electrically connected to the control circuit board module 2. When the cable tray 83 is at two extreme positions during the reciprocating sliding process, it actuates the take-up limit switch 841 or the release limit switch 842 to send a limit signal to the control circuit board module 2. The take-up limit switch and the release limit switch can monitor the take-up limit position and the release limit position of the cable tray, thereby realizing the control of the take-up and release limit positions of the cable reel, which helps to improve the reliability of take-up and release. When the charging cable is retracted to its limit position (fully retracted), the cable tray triggers the take-up limit switch. This switch sends a detected limit signal to the intelligent control circuit board, which then stops the motor, thus stopping the cable reel from taking up the cable. Conversely, when the charging cable is extended to its limit position (fully extended), the cable tray triggers the release limit switch. This switch sends a detected release limit signal to the intelligent control circuit board, which then stops the motor, thus stopping the cable reel from releasing the cable.

[0023] like Figure 2 , 5As shown, the outer peripheral wall of the cable reel 3 has a winding space 30 for winding the charging cable. One end of the charging cable 6 is connected to the wire clamping block 33 within the winding space 30, and the other end of the charging cable 6 is connected to the charging gun 61. The winding space on the cable reel ensures that the charging cable can be reliably wound on the reel, which helps improve the efficiency of cable winding and unwinding. A spiral-shaped isolation strip 34 is provided on the inner wall of the winding space 30 along the axial direction of the cable reel 3. The isolation strip 34 and the winding space 30 together form a spiral-shaped cable placement groove 300 for orderly accommodating the charging cable 6. The spiral-shaped cable placement groove within the winding space can orderly accommodate the charging cable, effectively preventing knots and tangles, ensuring the normal extension and retraction of the charging cable, and improving the efficiency of cable winding and unwinding.

[0024] like Figure 3 and 4 As shown, the drive mechanism 5 includes a motor 51 and a transmission assembly 52. ​​An intelligent control circuit board 2 is housed inside the housing 1 and is electrically connected to the motor 51, controlling its start, stop, and direction. The transmission assembly 52 connects the output shaft of the motor 51 to the winding reel 3, transmitting power from the motor 51 to the reel 3. The transmission assembly 52 includes a drive gear 521 mounted on the output shaft of the motor 51 and a transmission gear 32 mounted on one side of the winding reel 3 and meshing with the drive gear 521. The motor drives the winding reel via gears, ensuring more reliable transmission between the motor and the winding reel.

[0025] like Figure 2 As shown, a positioning turntable 11 is fixedly installed inside the housing 1 at the central axis position corresponding to the winding reel 3. A conductive slip ring 4 is fixed on the positioning turntable 11. A rotating disk 35 is fixedly installed at the central axis position of the winding reel 3. A ball bearing 36 is installed between the positioning turntable 11 and the rotating disk 35. The winding reel is rotated on the positioning turntable inside the housing via the rotating disk, ensuring that the winding reel can rotate reliably inside the housing.

[0026] Multiple rolling positioning components are added inside the housing. These components roll in contact with the edge of the convex ring furthest from the center of the cable reel. These multiple positioning rollers provide radial and axial limiting of the cable reel's rotation, ensuring that the reel does not wobble or jump radially during high-speed operation or frequent start-stop cycles. This ensures the cable is tightly and smoothly wound, while reducing noise and wear. It also prevents the charging cable from tangling or becoming twisted, ensuring normal extension and retraction. The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A smart charging station with an automatically retractable charging cable, characterized in that: The device includes a housing, an intelligent control circuit board, a rotatable reel inside the housing, a conductive slip ring, and a drive mechanism. The conductive slip ring is located on the central axis of the reel and is electrically connected to the charging cable. The drive mechanism is located inside the housing and is connected to the reel for driving the reel to perform the winding and unwinding of the charging cable. One side of the reel has a convex ring extending outward axially. Multiple rolling positioning components are circumferentially distributed around the convex ring inside the housing. Each rolling positioning component makes rolling contact with the edge of the convex ring away from the center of the reel to jointly limit the rotation of the reel radially and axially.

2. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: The rolling positioning assembly includes a positioning shaft and a bushing fixedly disposed in the housing. The bushing is rotatably sleeved on the positioning shaft, and the outer peripheral wall of the bushing is provided with a rolling contact annular groove that contacts the outer edge of the convex ring.

3. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: The housing contains a cable routing mechanism that is connected to the cable reel. The cable routing mechanism includes a support frame, a lead screw, and a cable routing plate. The support frame is located inside the housing, and the lead screw is rotatably mounted on the support frame. The axial direction of the lead screw is parallel to the axial direction of the cable reel. The driving force of the cable reel can drive the lead screw to rotate synchronously. The cable routing plate is slidably mounted on the support frame and threadedly connected to the lead screw, and slides back and forth along its axial direction under the drive of the lead screw. The cable routing plate has a guide groove for guiding the charging cable. The guide groove is used to guide and constrain the charging cable during the cable routing process.

4. The intelligent charging pile with automatic retractable charging cable according to claim 3, characterized in that: The lead screw is equipped with a gear, and the winding reel is equipped with a transmission gear that meshes with the gear.

5. The intelligent charging pile with automatic retractable charging cable according to claim 3 or 4, characterized in that: A limit detection component is provided on the support frame corresponding to one side of the lead screw. The limit detection component includes a take-up limit switch and a release limit switch. The take-up limit switch and the release limit switch are respectively fixed on the support frame at the two ends of the lead screw and are electrically connected to the control circuit board module. When the cable tray is at two extreme positions during the reciprocating sliding process, it actuates the take-up limit switch or the release limit switch to send a limit signal to the control circuit board module.

6. The intelligent charging pile with automatic retractable charging cable according to claim 4, characterized in that: The drive mechanism includes a motor and a transmission assembly. The intelligent control circuit board is installed inside the housing and is electrically connected to the motor. It is used to control the start, stop and direction of the motor. The transmission assembly is connected between the output shaft of the motor and the winding reel and is used to transmit the power of the motor to the winding reel.

7. The intelligent charging pile with automatic retractable charging cable according to claim 6, characterized in that: The transmission assembly includes a drive gear, which is mounted on the output shaft of the motor and meshes with the transmission gear of the winding reel.

8. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: The outer peripheral wall of the coil has a winding space for winding the charging cable. One end of the charging cable is connected to the pressure block in the winding space, and the other end of the charging cable is connected to the charging gun.

9. The intelligent charging pile with automatic retractable charging cable according to claim 8, characterized in that: The inner wall of the winding space is provided with a spiral isolation strip along the axial direction of the winding reel. The isolation strip and the winding space together form a spiral cable placement groove for orderly accommodating charging cables.

10. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: A positioning turntable is fixedly installed inside the box at the central axis position corresponding to the winding reel. The conductive slip ring is fixed on the positioning turntable. A rotating disk is fixedly installed at the central axis position of the winding reel. A ball bearing is provided between the positioning turntable and the rotating disk.

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