A smart cable safety management charging pile

Abstract

This invention provides an intelligent cable safety management charging pile, aiming to solve the overheating problem and potential safety hazards caused by cable entanglement during electric vehicle charging. The device includes a housing, a fixed shaft, a winding drum, a charging cable, and a charging gun, all mounted on the charging pile. Its core design lies in the cooperation of a spiral groove and a linked charging starter, ensuring that current is allowed to flow and charging begins only when the charging cable is fully extended, thus effectively avoiding overheating caused by charging when the cable is mostly entangled. In addition, it integrates an automatic retraction function, using a spring-loaded mechanism to automatically retract the charged cable, and is equipped with a centrifugal brake to control the retraction speed and prevent danger caused by excessively rapid retraction. This invention not only improves the safety and convenience of the charging process but also extends the cable's lifespan, providing electric vehicle users with more reliable charging protection.

Description

Technical Field

[0001] This invention belongs to the field of charging pile technology, specifically relating to an intelligent cable safety management charging pile. Background Technology

[0002] With the increasing prevalence of electric vehicles (EVs), the development of charging infrastructure has become crucial. As a key node for EV energy replenishment, charging stations face numerous technical challenges while ensuring efficient and convenient charging services. Among these, the safety and durability of charging cables during use and storage are particularly prominent. Currently, despite continuous advancements in charging technology, a significant technical problem remains: when the charging cable is mostly wound around the spool and begins to conduct electricity, it causes the internal temperature of the cable to rise, leading to overheating. This overheating not only accelerates the aging of the cable materials and shortens its lifespan but may also pose safety hazards such as fire or electric shock risks.

[0003] Current market solutions have not fully solved this problem. For example, some designs attempt to reduce heat generation by improving cable materials or adding heat dissipation mechanisms, but these methods often only provide temporary relief and do not eliminate the risk at its root. In addition, while the application of automatic winding devices improves ease of use, the problem of heat generation is still unavoidable when current passes through a large number of wound cables. Summary of the Invention

[0004] This invention aims to provide a smart cable safety management charging station that solves the technical problem of overheating during charging caused by most charging cables being wrapped around the spool.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A smart cable safety management charging pile includes an outer shell, a fixed shaft installed inside the outer shell, a winding drum rotatably mounted on the fixed shaft via a bearing, a charging cable wound on the winding drum, one end of the charging cable passing out of the outer shell and connected to a charging gun, and the other end of the charging cable connected to the charging pile.

[0007] One end face of the winding drum is provided with a spiral groove, and a linkage charging starter is installed at the end of the fixed shaft. The linkage charging starter includes a starting frame, which is fixed to the end of the fixed shaft. A slide rail is provided on the starting frame, and a slider is slidably installed on the slide rail. A protrusion is provided on the slider, which is located in the spiral groove. A micro switch is also installed on the starting frame, and the micro switch is connected to the CP charging cable of the charging pile.

[0008] With the side closer to the fixed axis as the inside and the side farther from the fixed axis as the outside, when the slider moves to the outer end of the slide rail, the slider can contact the micro switch.

[0009] Furthermore, the lower part of the outer casing is provided with a storage slot for inserting the charging gun.

[0010] Furthermore, a limit spring is connected between the slider and the inner end of the slide rail.

[0011] Furthermore, a ring is provided on the other end face of the winding drum, a spring is provided between the end of the ring and the fixed shaft, and an end cap is fastened to the outside of the ring.

[0012] Furthermore, a centrifugal brake is installed between the end of the fixed shaft and the ring body.

[0013] Furthermore, a ratchet mechanism and an electric ratchet release mechanism are also installed inside the housing. When the charging cable is pulled out, the winding drum rotates, and the spring at the end of the winding drum is tightened. At this time, the ratchet mechanism acts on the winding drum to prevent the winding drum from rotating back. After charging is completed, the winding drum obtains torque under the action of the spring. At this time, the electric ratchet release mechanism releases the ratchet mechanism's restriction on the rotation of the winding drum, and the winding drum begins to retract the charging cable.

[0014] Furthermore, the ratchet mechanism includes a ratchet ring and a pawl. The ratchet ring is disposed on the end face of the winding drum, and the pawl is hinged to the inner wall of the outer casing by a pin. The pawl cooperates with the ratchet ring.

[0015] An electric ratchet release mechanism is installed on the inner wall of the housing. The electric ratchet release mechanism includes an electric push-pull mechanism and two guide rails. Movable blocks are slidably mounted on the two guide rails. A push-pull rod is fixed on the movable block. An elongated hole is opened on the push-pull rod. A bolt is provided at the end of the ratchet pawl. The bolt passes through the elongated hole and a nut is provided at the end of the bolt. The bolt can move in the elongated hole. A spring connecting screw is provided on the push-pull rod. A compression spring is connected between the spring connecting screw and the bolt. Under the elastic force of the compression spring, the bolt is located at the end of the elongated hole.

[0016] The electric push-pull mechanism is used to push and pull the movable block. When the electric push-pull mechanism pulls the movable block, the movable block moves in conjunction with the push-pull rod. The push-pull rod pulls the end of the pawl through the bolt, causing the pawl to rotate around the pin. The other end of the pawl disengages from the ratchet ring, finally releasing the restriction on the ratchet ring, and the winding drum can then rotate freely.

[0017] Furthermore, the electric push-pull mechanism includes a servo motor and a lead screw. The servo motor is installed inside the housing, and the lead screw is rotatably installed on the inner wall of the housing through two bearing seats and bearings. The servo motor is connected to the end of the lead screw through a coupling, and a nut is fixed on the movable block. The lead screw and the nut are threaded together.

[0018] Compared with existing technologies, the beneficial effects of this invention are as follows: This intelligent cable safety management charging pile effectively solves the problem of overheating caused by the extensive winding of the charging cable during the charging process through a series of innovative designs, improving the safety of use and the service life of the cable. Its core feature is that charging only begins after the charging cable is fully pulled out, fundamentally avoiding the risk of cable overheating. Furthermore, the device integrates an automatic retraction function and optimizes the cable retraction process through components such as a spring, centrifugal brake, and ratchet mechanism, preventing safety hazards caused by excessively fast retraction speed. The application of an electric ratchet release mechanism further ensures the safety and reliability of operation, making the entire charging process more efficient, convenient, and safe, providing an ideal charging solution for electric vehicle users. Attached Figure Description

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is an installation diagram of a smart cable safety management charging pile according to the present invention;

[0021] Figure 2 A schematic diagram of a smart cable safety management charging pile;

[0022] Figure 3 This is an end view of the winding drum;

[0023] Figure 4 A schematic diagram of the linkage charging starter;

[0024] Figure 5 This is a schematic diagram showing the positions of the spring and ratchet mechanism.

[0025] Figure 6 This is a schematic diagram showing the connection between the ratchet mechanism and the electric ratchet release mechanism. Detailed Implementation

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The present invention will be further described in detail below with reference to the embodiments.

[0028] like Figure 1-3As shown, a specific embodiment 1 of the intelligent cable safety management charging pile provided by the present invention is as follows:

[0029] A smart cable safety management charging pile includes an outer shell 1, which is installed on a charging pile 2. A fixed shaft 3 is installed inside the outer shell 1. A winding drum 4 is rotatably mounted on the fixed shaft 3 via a bearing. A charging cable 5 is wound on the winding drum 4. One end of the charging cable 5 extends out of the outer shell 1 and is connected to a charging gun 6. The other end of the charging cable 5 is connected to the charging pile 2.

[0030] A spiral groove 7 is provided on one end face of the winding drum 4, and a linkage charging starter 8 is installed at the end of the fixed shaft 3; for example Figure 4 The diagram shows a linkage charging starter 8 facing the spiral groove 7. The linkage charging starter 8 includes a starting frame 9, which is fixed to the end of the fixed shaft 3. A slide rail 10 is provided on the starting frame 9, and a slider 11 is slidably mounted on the slide rail 10. A protrusion 12 is provided on the slider 11 and is located in the spiral groove 7. A micro switch 13 is also installed on the starting frame 9 and is connected to the CP charging line of the charging pile 2.

[0031] With the side closer to the fixed shaft 3 as the inside and the side farther from the fixed shaft 3 as the outside, when the slider 11 moves to the outer end of the slide rail 10, the slider 11 can contact the micro switch 13. After the micro switch 13 is closed, the CP charging line of the charging pile 2 is connected, and the charging cable 5 and the charging gun 6 begin to charge the car.

[0032] When using the intelligent cable safety management charging pile of this embodiment, the entire charging cable 5 is wound around the winding drum 4. Only after the entire charging cable 5 is pulled out will a charging signal flow through, thus starting to charge the new energy vehicle. This avoids the risk of overheating caused by charging the charging cable 5 while it is mostly wound around the winding drum 4. The specific working principle is as follows: the user pulls the charging gun 6 to pull the charging cable 5 out of the winding drum 4. As it is pulled out, the winding drum 4 rotates on the fixed shaft 3, and the spiral groove 7 on the end face of the winding drum 4 begins to wind. Its center rotates, and the protruding post 12 is located in the spiral groove 7. As the spiral groove 7 rotates, the spiral groove 7 acts on the protruding post 12, that is, pushes the protruding post 12 to move in the radial direction along the end face of the winding drum 4. The protruding post 12 is set on the slider 11, and finally the slider 11 is linked. The slider 11 moves to the outer end on the slide rail 10. At this time, the charging cable 5 is completely pulled out from the winding drum 4, and the slider 11 contacts the micro switch 13. The micro switch 13 closes, the CP charging line of the charging pile 2 is connected, and the new energy vehicle begins to be charged through the charging cable 5 and the charging gun 6.

[0033] The intelligent cable safety management charging pile of this embodiment can be further optimized. For example, a storage groove 14 can be provided at the lower part of the outer shell 1. When the charging gun 6 is not used, the storage groove 14 is used to insert the charging gun 6. In addition, when the slider 11 moves to the inner end of the slide rail 10, in order to prevent the protrusion 12 on the slider 11 from disengaging from the spiral groove 7, a limiting spring 15 can be provided between the slider 11 and the inner end of the slide rail 10. The limiting spring 15 limits the stroke of the slider 11.

[0034] Specific embodiment 2 of the intelligent cable safety management charging pile provided by the present invention:

[0035] The difference from Specific Embodiment 1 is that this embodiment also provides a structure for automatically retrieving the charging cable, specifically, as follows: Figure 5 As shown, a ring 16 is provided on the other end face of the winding drum 4, and a spring 17 is provided between the end of the ring 16 and the fixed shaft 3. An end cap 18 is attached to the outside of the ring 16. When the charging cable 5 is pulled out, the spring 17 begins to store energy. After charging is completed, the user disconnects the charging gun 6, and the spring 17 provides torque to the winding drum 4, causing the winding drum 4 to rotate, thereby automatically winding and retracting the charging cable 5.

[0036] Specific embodiment 3 of the intelligent cable safety management charging pile provided by the present invention:

[0037] This embodiment is a further optimization of embodiment 2. In embodiment 2, the charging cable 5 is automatically retracted by the spring 17. However, the characteristics of the spring 17 may cause the charging cable 5 to retract too quickly, which may cause the charging gun 6 to injure the user or damage the charging gun 6, posing a certain safety hazard. Therefore, this embodiment is equipped with a damping braking structure to control the retraction speed. This damping braking structure is a centrifugal brake. The centrifugal brake is installed between the end of the fixed shaft 3 and the ring 16. The centrifugal brake acts on the ring 16. Since the centrifugal brake is a conventional technology, its specific structure and working principle will not be described in detail.

[0038] Specific embodiment 4 of the intelligent cable safety management charging pile provided by the present invention:

[0039] The difference from Embodiment 3 is that this embodiment has a ratchet mechanism and an electric ratchet release mechanism 20 installed inside the outer casing 1. When the charging cable 5 is pulled out, the winding drum 4 rotates, and the spring 17 at the end of the winding drum 4 is tightened. At this time, the ratchet mechanism acts on the winding drum 4 to prevent the winding drum 4 from rotating back. After charging is completed, the winding drum 4 obtains torque under the action of the spring 17, such as... Figure 5 As shown, at this time, the electric ratchet release mechanism 20 needs to release the ratchet mechanism from the restriction on the rotation of the winding drum 4, and the winding drum 4 begins to retract the charging cable 5.

[0040] The ratchet mechanism includes a ratchet ring 21 and a pawl 22. The ratchet ring 21 is disposed on the end face of the winding drum 4, and the pawl 22 is hinged to the inner wall of the outer casing 1 by a pin 23. The pawl 22 cooperates with the ratchet ring 21.

[0041] like Figure 6 As shown, the electric ratchet release mechanism 20 is installed on the inner wall of the outer casing 1. The electric ratchet release mechanism 20 includes an electric push-pull mechanism and two guide rails 24. Movable blocks 25 are slidably mounted on the two guide rails 24. A push-pull rod 26 is fixed on the movable block 25. An elongated hole 27 is provided on the push-pull rod 26. A bolt 28 is provided at the end of the pawl 22. The bolt 28 passes through the elongated hole 27, and a nut is provided at the end of the bolt 28. The bolt 28 can move within the elongated hole 27. A spring connecting screw 29 is provided on the push-pull rod 26. A compression spring 30 connects the spring connecting screw 29 and the bolt 28. Under the elastic force of the compression spring 30, the bolt 28 is located at the end of the elongated hole 27. Figure 5 As shown, when the winding drum 4 rotates clockwise, the charging cable 5 begins to be released. At this time, the pawl 22 will not affect the rotation of the ratchet ring 21. It should be noted that when the pawl 22 passes over the ratchet of the ratchet ring 21, the pawl 22 will rotate slightly counterclockwise. The other end of the pawl 22 has a small displacement on the push-pull rod 26. After the action of passing over the ratchet ring 21 is completed, under the elastic force of the compression spring 30, the end of the pawl 22 is always in contact with the ratchet ring 21.

[0042] The electric push-pull mechanism is used to push and pull the movable block 25. When the electric push-pull mechanism pulls the movable block 25, the movable block 25 moves in conjunction with the push-pull rod 26. The push-pull rod 26 pulls the end of the pawl 22 through the bolt 28, causing the pawl 22 to rotate around the pin 23. The other end of the pawl 22 disengages from the ratchet ring 21, finally releasing the restriction on the ratchet ring 21, allowing the winding drum 4 to rotate freely. The electric push-pull mechanism includes a servo motor 31 and a lead screw 32. The servo motor 31 is installed inside the outer casing 1. The lead screw 32 is rotatably installed on the inner wall of the outer casing 1 through two bearing seats and bearings. The servo motor 31 is connected to the end of the lead screw 32 through a coupling. A nut 33 is fixed on the movable block 25, and the lead screw 32 and the nut 33 are threadedly engaged.

[0043] When the charging cable 5 is rewound, the winding drum 4 rotates counterclockwise. At this time, the servo motor 31 starts and drives the lead screw 32 to rotate through the coupling. Since the lead screw 32 is threadedly engaged with the nut 33, the rotation of the lead screw 32 will inevitably pull the nut 33. The nut 33 is set on the movable block 25, which eventually pulls the movable block 25 to move on the two guide rails 24. The push-pull rod 26 is also fixedly connected to the movable block 25. Finally, the push-pull rod 26 is linked, so that the push-pull rod 26 pulls the end of the pawl 22 through the bolt 28. The pawl 22 rotates counterclockwise, and the end of the pawl 22 disengages from the ratchet ring 21. The pawl 22 no longer restricts the rotation of the ratchet ring 21, and the winding drum 4 can rotate freely to retract the charging cable 5. After the retraction is completed, the servo motor 31 reverses and indirectly pushes the push-pull rod 26, so that the pawl 22 resets and continues to abut against the ratchet ring 21.

[0044] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart cable safety management charging pile, characterized in that: Includes an outer shell, a fixed shaft is installed inside the outer shell, a winding drum is rotatably mounted on the fixed shaft via bearings, a charging cable is wound on the winding drum, one end of the charging cable passes out of the outer shell and is connected to a charging gun, and the other end of the charging cable is connected to a charging pile. One end face of the winding drum is provided with a spiral groove, and a linkage charging starter is installed at the end of the fixed shaft. The linkage charging starter includes a starting frame, which is fixed to the end of the fixed shaft. A slide rail is provided on the starting frame, and a slider is slidably installed on the slide rail. A protrusion is provided on the slider, which is located in the spiral groove. A micro switch is also installed on the starting frame, and the micro switch is connected to the CP charging cable of the charging pile. With the side closer to the fixed axis as the inside and the side farther from the fixed axis as the outside, when the slider moves to the outer end of the slide rail, the slider can contact the micro switch.

2. The intelligent cable safety management charging pile according to claim 1, characterized in that: The lower part of the outer casing is provided with a storage slot for inserting the charging gun.

3. The intelligent cable safety management charging pile according to claim 1, characterized in that: A limit spring is connected between the slider and the inner end of the slide rail.

4. The intelligent cable safety management charging pile according to claim 1, characterized in that: A ring is provided on the other end face of the winding drum, a spring is provided between the end of the ring and the fixed shaft, and an end cap is attached to the outside of the ring.

5. The intelligent cable safety management charging pile according to claim 4, characterized in that: A centrifugal brake is also installed between the end of the fixed shaft and the ring body.

6. The intelligent cable safety management charging pile according to claim 5, characterized in that: The housing also houses a ratchet mechanism and an electric ratchet release mechanism. When the charging cable is pulled out, the winding drum rotates, and the spring at the end of the winding drum is tightened. At this time, the ratchet mechanism acts on the winding drum to prevent it from rotating back. After charging is completed, the winding drum gains torque under the action of the spring. At this time, the electric ratchet release mechanism releases the ratchet mechanism's restriction on the rotation of the winding drum, and the winding drum begins to retract the charging cable.

7. The intelligent cable safety management charging pile according to claim 6, characterized in that: The ratchet mechanism includes a ratchet ring and a pawl. The ratchet ring is disposed on the end face of the winding drum, and the pawl is hinged to the inner wall of the outer casing by a pin. The pawl cooperates with the ratchet ring. An electric ratchet release mechanism is installed on the inner wall of the housing. The electric ratchet release mechanism includes an electric push-pull mechanism and two guide rails. Movable blocks are slidably mounted on the two guide rails. A push-pull rod is fixed on the movable block. An elongated hole is opened on the push-pull rod. A bolt is provided at the end of the ratchet pawl. The bolt passes through the elongated hole and a nut is provided at the end of the bolt. The bolt can move in the elongated hole. A spring connecting screw is provided on the push-pull rod. A compression spring is connected between the spring connecting screw and the bolt. Under the elastic force of the compression spring, the bolt is located at the end of the elongated hole. The electric push-pull mechanism is used to push and pull the movable block. When the electric push-pull mechanism pulls the movable block, the movable block moves in conjunction with the push-pull rod. The push-pull rod pulls the end of the pawl through the bolt, causing the pawl to rotate around the pin. The other end of the pawl disengages from the ratchet ring, finally releasing the restriction on the ratchet ring, and the winding drum can then rotate freely.

8. The intelligent cable safety management charging pile according to claim 7, characterized in that: The electric push-pull mechanism includes a servo motor and a lead screw. The servo motor is installed inside the housing, and the lead screw is rotatably mounted on the inner wall of the housing through two bearing seats and bearings. The servo motor is connected to the end of the lead screw through a coupling. A nut is fixed on the movable block, and the lead screw and the nut are threaded together.

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