Intelligent cable safety management charging pile

Abstract

The invention provides an intelligent cable safety management charging pile, and aims to solve the problem of heating and potential safety hazards caused by cable winding in the charging process of an electric vehicle. The device comprises an outer shell, a fixed shaft, a furling cylinder, a charging cable, a charging gun and other assemblies which are mounted on the charging pile; according to the core design, through cooperation of the spiral line groove and the linkage charging starter, it is ensured that current is allowed to pass and charging is started only when a charging cable is completely pulled out, and therefore the overheating phenomenon caused by charging when the cable is mostly wound is effectively avoided; in addition, an automatic recycling function is integrated, a clockwork spring is used for achieving automatic cable storage after charging, a centrifugal brake is arranged to control the recycling speed, and danger caused by too fast recycling is prevented. According to the invention, the safety and convenience of the charging process are improved, the service life of the cable is prolonged, and a more reliable charging guarantee is provided for an electric vehicle user.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging piles, and particularly relates to an intelligent cable safety management charging pile. Background Art

[0002] With the popularization of electric vehicles (EVs), the development of charging infrastructure has become crucial. As a key node for the energy supply of electric vehicles, charging piles face many technical challenges while ensuring efficient and convenient charging services. Among them, the safety and durability issues of charging cables during use and storage are particularly prominent. Currently, although charging technologies are constantly advancing, there is still a significant technical problem: when current starts to flow while most of the charging cable is wound around a spool, it will cause the temperature inside the cable to rise, leading to a heating phenomenon. This heating not only accelerates the aging of the cable material and shortens its service life but may also pose safety hazards such as fire or electric shock risks.

[0003] Existing solutions on the market currently cannot completely solve this problem. For example, some designs attempt to alleviate the heating phenomenon by improving the cable material or adding a heat dissipation mechanism, but these methods often only provide relief and cannot fundamentally eliminate the risks. In addition, although the application of automatic winding devices improves the convenience of use, when current passes through a large number of wound cables, the problem of heating is still inevitably faced. Summary of the Invention

[0004] The present invention aims to provide an intelligent cable safety management charging pile to solve the technical problem of charging heating caused by most of the charging cable being wound around a spool.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An intelligent cable safety management charging pile includes an outer housing. A fixed shaft is installed inside the outer housing. A winding drum is rotatably installed on the fixed shaft through a bearing. A charging cable is wound around the winding drum. One end of the charging cable passes out of the outer housing and is connected to a charging gun, and the other end of the charging cable is connected to the charging pile.

[0007] A spiral wire groove is provided on one end face of the winding drum, and a linkage charging starter is installed at the end of the fixed shaft. The linkage charging starter includes a starter frame fixed at the end of the fixed shaft. A slide rail is provided on the starter frame. A slider is slidably installed on the slide rail. A convex column is provided on the slider and is located in the spiral wire groove. A microswitch is also installed on the starter frame and is connected to the CP charging line of the charging pile.

[0008] Taking the side close to the fixed shaft as the inner side and the side far from the fixed shaft as the outer side, when the slider moves to the outer end of the slide rail, the slider can contact the microswitch.

[0009] Furthermore, a storage groove is provided at the lower part of the outer housing, and the storage groove is used for inserting a charging gun.

[0010] Furthermore, a limiting spring is connected between the inner end of the sliding block and the sliding rail.

[0011] Furthermore, a ring body is provided on the other end face of the winding drum, a clockwork spring is provided between the ring body and the end of the fixed shaft, and an end cover is buckled outside the ring body.

[0012] Furthermore, a centrifugal brake is also 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 in the outer housing. When the charging cable is pulled out, the winding drum rotates, and the clockwork 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, under the action of the clockwork spring, the winding drum obtains torque. At this time, the electric ratchet release mechanism releases the restriction of the ratchet mechanism on the rotation of the winding drum, and the winding drum starts to retract the charging cable.

[0014] Furthermore, the ratchet mechanism includes a ratchet ring and a ratchet pawl. The ratchet ring is provided on the end face of the winding drum, and the ratchet pawl is hinged to the inner wall of the outer housing through a pin shaft, and the ratchet pawl is matched with the ratchet ring;

[0015] The electric ratchet release mechanism is installed on the inner wall of the outer housing. The electric ratchet release mechanism includes an electric push-pull mechanism and two guide rails. A movable block is slidably installed on the two guide rails. A push rod is fixed on the movable block. A long hole is provided in the push rod. A bolt is provided at the end of the ratchet pawl, and the bolt passes through the long hole, and a nut is provided at the end of the bolt. The bolt can move in the long hole. A spring connecting screw is provided on the push rod, and 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 long 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 drives the push rod to move. The push rod pulls the end of the ratchet pawl through the bolt, so that the ratchet pawl rotates around the pin shaft, and the other end of the ratchet pawl disengages from the ratchet ring, and finally the restriction on the ratchet ring is released, and the winding drum can rotate freely.

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

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: An intelligent cable safety management charging pile of the present invention effectively solves the problem of heat generation caused by most of the winding of the charging cable during the charging process through a series of innovative designs, improves the safety of use and the service life of the cable. The core lies in that charging will only start when the charging cable is completely pulled out, fundamentally avoiding the risk of cable overheating. In addition, the device integrates an automatic recycling function and optimizes the cable storage process through components such as a clockwork spring, a centrifugal brake, and a ratchet mechanism, preventing potential safety hazards caused by too fast recycling speed. The application of the electric ratchet release mechanism further ensures the safety and reliability of the operation, making the entire charging process more efficient, convenient, and safe, providing an ideal charging solution for electric vehicle users. BRIEF DESCRIPTION OF THE DRAWINGS

[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, but do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is an installation schematic diagram of an intelligent cable safety management charging pile of the present invention;

[0021] Figure 2 is a structural schematic diagram of an intelligent cable safety management charging pile;

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

[0023] Figure 4 is a structural schematic diagram of the linkage charging starter;

[0024] Figure 5 is a schematic diagram of the positions of the clockwork spring and the ratchet mechanism;

[0025] Figure 6 is a connection schematic diagram of the ratchet mechanism and the electric ratchet release mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] The following further describes the present invention in detail in conjunction with the embodiments.

[0028] As Figures 1-3As shown in the figure, Specific Embodiment 1 of an intelligent cable safety management charging pile provided by the present invention:

[0029] An intelligent cable safety management charging pile includes a housing 1, the housing 1 is installed on the charging pile 2, a fixed shaft 3 is installed inside the housing 1, a winding drum 4 is rotatably installed on the fixed shaft 3 through a bearing, a charging cable 5 is wound around the winding drum 4, one end of the charging cable 5 passes out of the housing 1 and is connected to a charging gun 6, and the other end of the charging cable 5 is connected to the charging pile 2;

[0030] A spiral wire 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; As Figure 4 shown, it is a schematic diagram of the linkage charging starter 8 facing the spiral wire groove 7. The linkage charging starter 8 includes a starter frame 9, the starter frame 9 is fixed at the end of the fixed shaft 3, a slide rail 10 is provided on the starter frame 9, a slider 11 is slidably installed on the slide rail 10, a convex column 12 is provided on the slider 11, the convex column 12 is located in the spiral wire groove 7, and a microswitch 13 is also installed on the starter frame 9, and the microswitch 13 is connected to the CP charging line of the charging pile 2;

[0031] Taking the side close to the fixed shaft 3 as the inner side and the side far from the fixed shaft 3 as the outer side, when the slider 11 moves to the outer end of the slide rail 10, the slider 11 can contact the microswitch 13. After the microswitch 13 is closed, the CP charging line of the charging pile 2 is connected, and the charging cable 5 and the charging gun 6 start to charge the car.

[0032] When using an intelligent cable safety management charging pile of this embodiment, the whole charging cable 5 is wound around the winding drum 4. Only after the whole charging cable 5 is pulled out, will a charging signal flow through, and then start to charge the new energy vehicle. This can avoid the heating risk caused by charging when most of the charging cable 5 is wound around the winding drum 4; The specific working principle is as follows: The user pulls the charging gun 6 to pull out the charging cable 5 from the winding drum 4. During the pulling process, the winding drum 4 rotates on the fixed shaft 3, and the spiral wire groove 7 on the end face of the winding drum 4 starts to rotate around its center. The convex column 12 is located in the spiral wire groove 7. As the spiral wire groove 7 rotates, the spiral wire groove 7 acts on the convex column 12, that is, pushes the convex column 12 to move in the radial direction of the end face of the winding drum 4. The convex column 12 is arranged 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 microswitch 13. The microswitch 13 is closed, the CP charging line of the charging pile 2 is connected, and the new energy vehicle is charged through the charging cable 5 and the charging gun 6.

[0033] The intelligent cable safety management charging pile of this embodiment can also be further optimized. For example, a storage slot 14 can be provided at the lower part of the outer housing 1. When the charging gun 6 is not in use, the storage slot 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 convex column 12 on the slider 11 from disengaging from the spiral wire groove 7, a limiting spring 15 can be provided between the slider 11 and the inner end of the slide rail 10, and 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 retracting the charging cable. Specifically, as Figure 5 shown, a ring body 16 is provided on the other end face of the winding drum 4, a clockwork spring 17 is provided between the ring body 16 and the end of the fixed shaft 3, and an end cover 18 is buckled outside the ring body 16. When the charging cable 5 is pulled out, the clockwork spring 17 starts to store energy. After charging is completed, the user disconnects the charging gun 6, and the clockwork 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 clockwork spring 17. However, the characteristics of the clockwork spring 17 may cause the charging cable 5 to be retracted too quickly, resulting in the charging gun 6 injuring the user or damaging the charging gun 6, presenting certain safety hazards. Therefore, this embodiment provides a damping braking structure to control the retraction speed. This damping braking structure is a centrifugal brake, which is installed between the end of the fixed shaft 3 and the ring body 16, and the centrifugal brake acts on the ring body 16. Since the centrifugal brake is a conventional existing technology, its specific structure and working principle will not be elaborated.

[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 installs a ratchet mechanism and an electric ratchet release mechanism 20 in the outer housing 1. When the charging cable 5 is pulled out, the winding drum 4 rotates, and the clockwork 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, under the action of the clockwork spring 17, the winding drum 4 obtains torque. As Figure 5 shown, at this time, the electric ratchet release mechanism 20 needs to release the restriction of the ratchet mechanism on the rotation of the winding drum 4, and the winding drum 4 starts to retract the charging cable 5.

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

[0041] As Figure 6 shown, the electric ratchet release mechanism 20 is installed on the inner wall of the outer housing 1. The electric ratchet release mechanism 20 includes an electric push-pull mechanism and two guide rails 24. A movable block 25 is slidably installed on the two guide rails 24. A push-pull rod 26 is fixed on the movable block 25. A long hole 27 is formed in the push-pull rod 26. A bolt 28 is arranged at the end of the ratchet pawl 22. The bolt 28 passes through the long hole 27, and a nut is arranged at the end of the bolt 28. The bolt 28 can move in the long hole 27. A spring connecting screw 29 is arranged on the push-pull rod 26. A compression spring 30 is connected between 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 long hole 27. As Figure 5 shown, when the winding drum 4 rotates clockwise, the charging cable 5 starts to be released. At this time, the ratchet pawl 22 does not affect the rotation of the ratchet ring 21. It should be noted that when the ratchet pawl 22 crosses the ratchet teeth of the ratchet ring 21, the ratchet pawl 22 will rotate slightly counterclockwise, and the other end of the ratchet pawl 22 has a small displacement on the push-pull rod 26. After the action of crossing the ratchet ring 21 is completed, under the elastic force of the compression spring 30, the end of the ratchet 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 drives the push-pull rod 26 to move. The push-pull rod 26 pulls the end of the ratchet pawl 22 through the bolt 28, so that the ratchet pawl 22 rotates around the pin shaft 23, and the other end of the ratchet pawl 22 disengages from the ratchet ring 21, and finally the restriction on the ratchet ring 21 is released, and the winding drum 4 can rotate freely. The electric push-pull mechanism includes a servo motor 31 and a lead screw 32. The servo motor 31 is installed in the outer housing 1. The lead screw 32 is rotatably installed on the inner wall of the outer housing 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 member 33 is fixed on the movable block 25, and the lead screw 32 is in threaded cooperation with the nut member 33.

[0043] When the charging cable 5 is rewound, the reel 4 rotates counterclockwise. At this time, the servo motor 31 is started. The servo motor 31 drives the lead screw 32 to rotate through a coupling. Since the lead screw 32 is in threaded engagement with the nut member 33, the rotation of the lead screw 32 will inevitably pull the nut member 33. The nut member 33 is arranged on the movable block 25, and finally the movable block 25 is pulled to move on the two guide rails 24. The push rod 26 is also fixedly connected to the movable block 25. Finally, the push rod 26 is linked, so that the push rod 26 pulls the end of the pawl 22 through the bolt 28, and the pawl 22 rotates counterclockwise. The end of the pawl 22 is disengaged from the ratchet ring 21, and the pawl 22 no longer restricts the rotation of the ratchet ring 21, and the reel 4 can rotate freely to recover the charging cable 5. After the recovery is completed, the servo motor 31 reverses to indirectly push the push rod 26, so that the pawl 22 is reset and continues to abut against the ratchet ring 21.

[0044] It should be noted that in this article, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. An intelligent cable safety management charging pile, characterized by: It includes an outer shell, a fixed shaft is installed in the outer shell, a reel is rotatably installed on the fixed shaft through a bearing, a charging cable is wound on the reel, 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; A spiral groove is provided on one end face of the reel, 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 at the end of the fixed shaft, and a slide rail is provided on the starting frame, a slider is slidably installed on the slide rail, and a convex column is provided on the slider, and the convex column 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 line of the charging pile; The side close to the fixed axis is the inner side, and the side far from the fixed axis is the outer side. When the slider moves to the outer end of the slide rail, the slider can contact the micro switch.

2. According to claim 1, the intelligent cable safety management charging pile is characterized by: A storage groove is provided at the lower part of the outer shell, and the storage groove is used for inserting the charging gun.

3. According to claim 1, the intelligent cable safety management charging pile is characterized by: 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 body is arranged on the other end surface of the winding drum, a spring is arranged between the ring body and the end of the fixed shaft, and an end cover is buckled outside the ring body.

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: A ratchet mechanism and an electric ratchet release mechanism are also installed in the outer shell. When the charging cable is pulled out, the reel rotates and the spring at the end of the reel is tightened. At this time, the ratchet mechanism acts on the reel to prevent the reel from rotating. After charging is completed, the reel obtains torque under the action of the spring. At this time, the electric ratchet release mechanism releases the restriction of the ratchet mechanism on the rotation of the reel, and the reel starts 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, wherein the ratchet ring is arranged on the end surface of the reel, and the pawl is hinged to the inner wall of the outer shell through a pin shaft, and the pawl cooperates with the ratchet ring; The electric ratchet release mechanism is installed on the inner wall of the outer shell, and the electric ratchet release mechanism includes an electric push-pull mechanism and two guide rails, on which movable blocks are slidably installed, and a push-pull rod is fixed on the movable block, and a long hole is opened on the push-pull rod, and a bolt is arranged at the end of the ratchet, and the bolt is penetrated in the long hole, and a nut is arranged at the end of the bolt, and the bolt can move in the long hole, and a spring connecting screw is arranged on the push-pull rod, and a compression spring is connected between the spring connecting screw and the bolt, and under the elastic force of the compression spring, the bolt is located at the end of the long 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 is linked to the push-pull rod to move. The push-pull rod pulls the end of the pawl through the bolt, causing the pawl to rotate around the pin shaft, and the other end of the pawl disengages from the ratchet ring, eventually releasing the restriction on the ratchet ring, and the winding drum can 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 screw rod. The servo motor is installed in the outer shell. The screw rod is rotatably installed on the inner wall of the outer shell through two bearing seats and bearings. The servo motor is connected to the end of the screw rod through a coupling. A nut piece is fixed on the movable block, and the screw rod and the nut piece are threadedly matched.

Images