A new energy charging wire and a charging wire telescopic assembly thereof
Patent Information
- Application Number
- CN202522239850.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-23
AI Technical Summary
然而，现有新能源充电线在实际应用中存在以下突出问题：一方面，由于不同用户的操作习惯存在差异，拉出充电线时的用力大小各不相同，当拉力过大时，充电线内部的导电芯线易被过度拉扯而发生断裂，直接导致充电功能失效；同时，外部绝缘层会因拉伸变形出现裂纹或破损，不仅降低线缆的绝缘性能，还可能引发漏电、短路等安全事故；另一方面，充电线在传输大电流过程中本身会产生热量，尤其在夏季高温环境下，外界环境温度与线缆自身发热叠加，易导致线缆温度急剧升高
通过充电枪与线缆连接处的拉力传感器实时监测拉力，结合驱动组件与摩擦辊的协同作用，能在拉力超过预设阈值时迅速介入：电动推杆推动顶块挤压斜槽，使摩擦辊向收放筒移动并产生摩擦力，既通过反馈提醒使用者减小拉力，又从机械层面限制收放筒过度转动，避免线缆内部芯线断裂和外部绝缘层破损，显著提升了线缆的耐用性；
Smart Images
Figure CN224781775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy charging equipment, and in particular to a new energy charging cable and its charging cable extension component. Background Technology
[0002] With the rapid development of the new energy vehicle industry, charging piles, as an important supporting infrastructure, are receiving increasing attention for their ease of use and safety. Currently, most charging piles on the market are equipped with charging cables and charging guns. During use, users need to manually pull the charging cable out of the charging pile and then connect the charging gun to the vehicle's charging port to complete charging. After charging is completed, the charging cable needs to be manually retracted or reset using a simple winding structure. However, existing new energy charging cables have the following prominent problems in practical applications: On the one hand, due to differences in operating habits among different users, the force applied when pulling out the charging cable varies. When the pulling force is too great, the conductive core wire inside the charging cable is easily stretched and broken, directly causing the charging function to fail. At the same time, the outer insulation layer may crack or break due to stretching deformation, which not only reduces the insulation performance of the cable but may also cause safety accidents such as leakage and short circuits. On the other hand, the charging cable itself generates heat during the transmission of high current. Especially in the high-temperature environment of summer, the combined effect of the ambient temperature and the cable's own heat generation can easily cause the cable temperature to rise sharply. If the heat cannot be dissipated in time, it will degrade the performance of the internal insulation material of the cable, reducing its aging resistance and insulation strength. Long-term use may cause cable overheating failure, or even cause charging interruption or equipment damage, affecting charging efficiency and safety.
[0003] Therefore, it is necessary to provide a new type of new energy charging cable and its extension assembly to solve the above-mentioned technical problems. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a new energy charging cable and its charging cable telescopic component.
[0005] The new energy charging cable and its telescopic assembly provided by this utility model include: a charging pile, a take-up and release tube, a friction roller, a drive assembly, a cooling box, and a heat dissipation assembly. A cable is installed inside the charging pile, and a charging gun is installed at the other end of the cable. A take-up and release tube for winding the cable is installed inside the charging pile. A friction roller is installed inside the take-up and release tube. A drive assembly is installed between the take-up and release tube and the friction roller. The drive assembly drives the friction roller to move to limit the tension on the cable. A cooling box is installed inside the charging pile. A cooling assembly is installed between the cooling box and the cable. The heat dissipation assembly is used to dissipate heat from the inside of the cable.
[0006] Preferably, the drive assembly includes: an electric push rod, a top block, and a sloping groove. An installation cover is installed inside the charging pile. An electric push rod is fixedly connected to the inner wall of the installation cover. A top block is fixedly connected to the output end of the electric push rod. A sloping groove is opened on the outer wall of the end of the friction roller away from the take-up and release cylinder. The top block is placed inside the sloping groove and contacts its inner wall.
[0007] Preferably, a slide rod is fixedly connected to the end of the friction roller, a sleeve is fixedly connected to the inner wall of the mounting cover, the slide rod is placed inside the sleeve and slidably connected to its inner wall, and a tension spring is sleeved on the outside of the sleeve, one end of the tension spring is fixedly connected to the inner wall of the mounting cover, and the other end is fixedly connected to the friction roller.
[0008] Preferably, the axis of the take-up and release tube is rotatably connected to the inner wall of the mounting cover, and a spiral spring is installed at the end of the take-up and release tube away from the friction roller.
[0009] Preferably, the heat dissipation assembly includes: a pump body, an inlet pipe, and an outlet pipe. The pump body is fixedly connected to the inner wall of the mounting cover. The input end of the pump body is connected to the cooling box through a connecting pipe. The output end of the pump body is connected to the inlet pipe. A cooling pipe is installed inside the cable. The other end of the inlet pipe is connected to the inlet of the cooling pipe. The outlet of the cooling pipe is connected to the outlet pipe. The other end of the outlet pipe is connected to the cooling box.
[0010] Preferably, a tension sensor is installed at the connection between the charging gun and the cable.
[0011] Compared with related technologies, the new energy charging cable and its telescopic component provided by this utility model have the following beneficial effects: The tension sensor at the connection between the charging gun and the cable monitors the tension in real time. Combined with the synergistic effect of the drive component and the friction roller, it can quickly intervene when the tension exceeds the preset threshold: the electric push rod pushes the top block to squeeze the inclined groove, causing the friction roller to move towards the take-up and release drum and generate friction. This not only reminds the user to reduce the tension through feedback, but also limits the excessive rotation of the take-up and release drum from a mechanical perspective, avoiding the breakage of the internal core wire and the damage to the external insulation layer of the cable, thus significantly improving the durability of the cable. During the charging phase, the electric push rod further drives the friction roller to fit tightly against the take-up and release tube, using friction force greater than the spring force of the spiral spring to lock the cable, preventing the charging gun from falling off due to the spring force, thus ensuring the stability of the charging connection. The heat dissipation component uses coolant circulating in the cooling pipes to remove the heat generated by the high current transmission of the cable in a timely manner, avoiding safety hazards such as insulation degradation and short circuits caused by excessive cable temperature in high-temperature environments in summer. Attached Figure Description
[0012] Figure 1 A schematic diagram of the structure of the new energy charging cable and its telescopic component provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the mounting cover. Figure 3 for Figure 2 The diagram shown is a partially enlarged structural schematic of the mounting cover. Figure 4 for Figure 3 The diagram shows the structure at point A. Figure 5 for Figure 3 The diagram shows the structural schematic of the side of the mounting cover; Figure 6 for Figure 5 The diagram shows a partial cross-sectional view of the cable. Figure 7 for Figure 6 The diagram shows the structure at point B. Figure 8 for Figure 6 The diagram shows a cross-sectional view of the take-up and take-down cylinder.
[0013] The following are the labels in the diagram: 1. Charging pile; 2. Cable; 3. Charging gun; 4. Retractor; 5. Friction roller; 6. Cooling box; 7. Electric push rod; 8. Top block; 9. Inclined groove; 10. Slide rod; 11. Sleeve; 12. Tension spring; 13. Mounting cover; 14. Scroll spring; 15. Pump body; 16. Inlet pipe; 17. Outlet pipe; 18. Cooling pipe; 19. Tension sensor. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages 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 merely illustrative of the present utility model and are not intended to limit the present utility model.
[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0016] Please see Figures 1 to 8A new energy charging cable and its telescopic assembly are disclosed. The new energy charging cable and its telescopic assembly include: a charging pile 1, a take-up and release tube 4, a friction roller 5, a drive assembly, a cooling box 6, and a heat dissipation assembly. A cable 2 is installed inside the charging pile 1, and a charging gun 3 is installed at the other end of the cable 2. The take-up and release tube 4 for winding the cable 2 is installed inside the charging pile 1. The friction roller 5 is installed inside the take-up and release tube 4. A drive assembly is installed between the take-up and release tube 4 and the friction roller 5. The drive assembly drives the friction roller 5 to move to limit the tension on the cable 2. The cooling box 6 is installed inside the charging pile 1. A cooling assembly is installed between the cooling box 6 and the cable 2. The heat dissipation assembly is used to dissipate heat from the inside of the cable 2. The drive assembly includes: an electric push rod 7, a top block 8, and a slant. 9. An installation cover 13 is installed inside the charging pile 1. An electric push rod 7 is fixedly connected to the inner wall of the installation cover 13. A top block 8 is fixedly connected to the output end of the electric push rod 7. An inclined groove 9 is opened on the outer wall of the end of the friction roller 5 away from the take-up and release cylinder 4. The top block 8 is placed inside the inclined groove 9 and contacts its inner wall. A sliding rod 10 is fixedly connected to the end of the friction roller 5. A sleeve 11 is fixedly connected to the inner wall of the installation cover 13. The sliding rod 10 is placed inside the sleeve 11 and is slidably connected to its inner wall. A tension spring 12 is sleeved on the outside of the sleeve 11. One end of the tension spring 12 is fixedly connected to the inner wall of the installation cover 13, and the other end is fixedly connected to the friction roller 5. The axis of the take-up and release cylinder 4 is rotatably connected to the inner wall of the installation cover 13. A spiral spring 14 is installed at the end of the take-up and release cylinder 4 away from the friction roller 5.
[0017] It should be noted that: the electric push rod 7 is an existing mature device; when the user applies excessive force, causing the pulling force to exceed the preset safety threshold, the control system immediately triggers the drive component to start: the output end of the electric push rod 7 extends downward, driving the top block 8 fixed at its end to move synchronously; since the top block 8 is embedded in the inclined groove 9 at the end of the friction roller 5 and is in close contact with the inner wall of the inclined groove 9, the top block 8 will generate lateral squeezing force on the inner wall of the inclined groove 9 during the movement, forcing the friction roller 5 to move inward toward the inside of the take-up and release cylinder 4; when the friction roller 5 moves, its other end is fixed The slide bar 10 slides axially along the sleeve 11 fixed to the inner wall of the mounting cover 13. The sleeve 11 guides the slide bar 10, ensuring that the friction roller 5 always moves smoothly in a straight line. At the same time, the tension spring 12 sleeved on the outside of the sleeve 11 is stretched, generating a reverse tension force. As the friction roller 5 gradually approaches the take-up and release tube 4, its outer wall contacts the inner wall of the take-up and release tube 4 and generates friction. This friction force will hinder the rotation of the take-up and release tube 4 and is fed back to the user through the cable 2, reminding the user to reduce the tension and avoid damage to the cable 2 due to excessive stretching.
[0018] Please see Figure 3 , Figure 6 and Figure 7The heat dissipation assembly includes: a pump body 15, an inlet pipe 16, and an outlet pipe 17. The pump body 15 is fixedly connected to the inner wall of the mounting cover 13. The input end of the pump body 15 is connected to the cooling box 6 through a connecting pipe. The output end of the pump body 15 is connected to the inlet pipe 16. A cooling pipe 18 is installed inside the cable 2. The other end of the inlet pipe 16 is connected to the inlet of the cooling pipe 18. The outlet of the cooling pipe 18 is connected to the outlet pipe 17. The other end of the outlet pipe 17 is connected to the cooling box 6. A tension sensor 19 is installed at the connection between the charging gun 3 and the cable 2. It should be noted that: the pump body 15 is an existing mature device; the charging pile 1 is equipped with a temperature sensor to monitor the temperature of the cable 2 in real time, and controls the start of the heat dissipation component through the control system.
[0019] The working principle of the new energy charging cable and its telescopic component provided by this utility model is as follows: When the user pulls out the charging gun 3, the charging gun 3 drives the cable 2 to extend out from inside the charging pile 1, and the take-up and release tube 4 starts to rotate as the cable 2 is pulled. At this time, the spiral spring 14 at the end of the take-up and release tube 4 away from the friction roller 5 is compressed due to the rotation of the take-up and release tube 4, gradually accumulating elastic potential energy to prepare for the automatic retraction of the cable 2 in the future. During this process, the friction roller 5 initially remains separated from the inner wall of the take-up and release tube 4, generating no friction force, ensuring that the cable 2 can be pulled out smoothly. At the same time, the tension sensor 19 installed at the connection between the charging gun 3 and the cable 2 monitors the tension force on the cable 2 in real time and transmits the detection data to the control system. When the user applies too much force, causing the tension force to exceed the preset safety threshold, the control system immediately triggers the start of the drive component: the output end of the electric push rod 7 extends downward, driving the top block 8 fixed at its end to move synchronously. Since the top block 8 is embedded in the inclined groove 9 at the end of the friction roller 5 and is in close contact with the inner wall of the inclined groove 9, the top block 8 will generate a lateral squeezing force on the inner wall of the inclined groove 9 during the movement, forcing the friction roller 5 to move inward toward the inside of the take-up and release tube 4. When the friction roller 5 moves, the slide rod 10 fixed at its other end slides axially along the sleeve 11 fixed on the inner wall of the mounting cover 13. The sleeve 11 guides the slide rod 10, ensuring that the friction roller 5 always moves smoothly in a straight line. At the same time, the tension spring 12 sleeved on the outside of the sleeve 11 is stretched, generating a reverse tension force. As the friction roller 5 gradually approaches the take-up and release tube 4, its outer wall contacts the inner wall of the take-up and release tube 4 and generates friction. This friction force will hinder the rotation of the take-up and release tube 4 and is fed back to the user through the cable 2, reminding the user to reduce the tension and avoid damage to the cable 2 due to excessive stretching. When the cable 2 is pulled to the appropriate length, and the user connects the charging gun 3 to the car charging port, the control system issues another command, and the electric push rod 7 extends further, pushing the top block 8 to continue squeezing the inclined groove 9, so that the friction roller 5 completely fits against the inner wall of the take-up and release tube 4 and forms a tight squeeze; at this time, the frictional force generated between the friction roller 5 and the take-up and release tube 4 is greater than the elastic potential energy of the spiral spring 14, and the take-up and release tube 4 is locked and cannot rotate, thereby effectively preventing the cable 2 from retracting on its own due to the rebound force of the spiral spring 14 during the charging process, ensuring the stability of the charging connection; If the temperature of cable 2 exceeds the preset value due to high current transmission or excessively high ambient temperature during charging, the heat dissipation component will automatically start: the pump body 15 will start working, drawing coolant from the cooling tank 6 through the connecting pipe and delivering it to the pre-embedded cooling pipe 18 inside the cable 2 through the inlet pipe 16; when the coolant flows in the cooling pipe 18, it will fully contact the heat-generating components inside the cable 2, absorb heat, and then flow back to the cooling tank 6 through the outlet pipe 17, forming a circulating heat dissipation loop; once the temperature of cable 2 drops to a safe range, the pump body 15 will automatically shut off, stopping heat dissipation, thus ensuring heat dissipation efficiency and avoiding energy waste; When charging is complete, the user pulls the charging gun 3 out of the car charging port and inserts it back into the top of the charging pile 1. The control system detects a reset signal and the electric push rod 7 in the drive assembly starts to retract, driving the top block 8 to move in the opposite direction along the inclined groove 9. At this time, the tension of the tension spring 12 is released, pulling the friction roller 5 to move a small distance away from the take-up and release cylinder 4 in the opposite direction, so that the pressure between the friction roller 5 and the inner wall of the take-up and release cylinder 4 is reduced, and the friction between the two is reduced and is less than the elastic potential energy of the spiral spring 14. The spiral spring 14 begins to release the accumulated elastic potential energy, causing the take-up and release drum 4 to rotate in the opposite direction, gradually winding the cable 2 around the outside of the take-up and release drum 4, completing the automatic take-up of the cable 2; during this process, the slide bar 10 slides in the opposite direction along the sleeve 11 as the friction roller 5 resets, the tension spring 12 returns to its initial state, and the entire assembly returns to the standby state, waiting for the next use.
[0020] All standard parts used above can be purchased from the market. Irregular parts can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. In addition, the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.
[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A new energy charging cable and its telescopic charging cable assembly, characterized in that, include: The charging pile (1) has a cable (2) installed inside it, and a charging gun (3) is installed at the other end of the cable (2). The charging pile (1) is equipped with a winding tube (4) for winding cables (2). Friction roller (5), the inside of the take-up and release cylinder (4) is equipped with friction roller (5); A drive assembly is installed between the take-up and take-down cylinder (4) and the friction roller (5). The drive assembly drives the friction roller (5) to move in order to limit the tension on the cable (2). Cooling box (6), the charging pile (1) is equipped with a cooling box (6); A heat dissipation component is installed between the cooling box (6) and the cable (2). The heat dissipation component is used to dissipate heat from the inside of the cable (2).
2. The new energy charging cable and its telescopic assembly according to claim 1, characterized in that, The drive assembly includes an electric push rod (7), a top block (8), and a sloping groove (9). An installation cover (13) is installed inside the charging pile (1). An electric push rod (7) is fixedly connected to the inner wall of the installation cover (13). The top block (8) is fixedly connected to the output end of the electric push rod (7). A sloping groove (9) is opened on the outer wall of the end of the friction roller (5) away from the take-up and release cylinder (4). The top block (8) is placed inside the sloping groove (9) and is in contact with its inner wall.
3. The new energy charging cable and its telescopic assembly according to claim 2, characterized in that, A slide rod (10) is fixedly connected to the end of the friction roller (5), and a sleeve (11) is fixedly connected to the inner wall of the mounting cover (13). The slide rod (10) is placed inside the sleeve (11) and is slidably connected to its inner wall. A tension spring (12) is sleeved on the outside of the sleeve (11). One end of the tension spring (12) is fixedly connected to the inner wall of the mounting cover (13), and the other end is fixedly connected to the friction roller (5).
4. The new energy charging cable and its telescopic assembly according to claim 1, characterized in that, The axis of the take-up and release tube (4) is rotatably connected to the inner wall of the mounting cover (13), and a spiral spring (14) is installed at the end of the take-up and release tube (4) away from the friction roller (5).
5. The new energy charging cable and its telescopic assembly according to claim 1, characterized in that, The heat dissipation assembly includes: a pump body (15), an inlet pipe (16), and an outlet pipe (17). The pump body (15) is fixedly connected to the inner wall of the mounting cover (13). The input end of the pump body (15) is connected to the cooling box (6) through a connecting pipe. The output end of the pump body (15) is connected to the inlet pipe (16). A cooling pipe (18) is installed inside the cable (2). The other end of the inlet pipe (16) is connected to the inlet of the cooling pipe (18). The outlet of the cooling pipe (18) is connected to the outlet pipe (17). The other end of the outlet pipe (17) is connected to the cooling box (6).
6. The new energy charging cable and its telescopic assembly according to claim 1, characterized in that, A tension sensor (19) is installed at the connection between the charging gun (3) and the cable (2).