Wear-resistant, insulated charging cable

Abstract

The application belongs to the technical field of new energy automobile charging cable, in particular to a wear-resistant insulated charging cable; comprising a plurality of cores, a plurality of fixed rings are uniformly arranged on the outer surfaces of the cores, a transfer cavity is arranged in the fixed ring, an inner ring is movably connected in the transfer cavity; a first flow pipe is arranged through the center of the fixed ring, a plurality of second flow pipes are arranged through the inner part of the fixed ring; a movable cavity is uniformly arranged in the inner part of the inner ring, a flow leakage hole is connected to the side of the movable cavity close to the center, two communication holes are symmetrically arranged in the inner part of the movable cavity, two fixed blocks are symmetrically arranged in the communication hole; the wear-resistant insulated charging cable has high charging efficiency and good charging effect, can meet the charging demand of different new energy automobiles, is simple to operate, has strong regulation and control adaptability, safety and stability, and is continuously efficient.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle charging cable technology, specifically a wear-resistant and insulated charging cable. Background Technology

[0002] With the emergence of electric vehicles around the world, they have played a positive role in promoting the further popularization of electric vehicles. The charging cable for new energy vehicles is a key component connecting electric vehicles and charging facilities. It can effectively transmit the electrical energy in the charging pile to the new energy vehicle in a timely manner, thereby driving the new energy vehicle to drive normally. Therefore, the performance of the charging cable for new energy vehicles directly affects the safety and efficiency of charging.

[0003] Chinese invention patent CN114822957B discloses a cable for new energy vehicles, comprising: multiple conductors, each including a conductor core and an insulation layer covering the conductor core; axially arranged reinforcing ribs between the multiple conductors, the outer surface of the reinforcing ribs being in close contact with the outer surface of the conductors, and polypropylene filling between the conductors; this new energy vehicle charging cable has low charging efficiency and poor charging stability.

[0004] Chinese invention patent CN117438145B discloses a cable device for new energy vehicles, relating to the field of automotive cables, including: a cable core, the outside of which is wrapped with an insulation layer; a sheath, which is sleeved on the insulation layer, the sheath having a receiving cavity, and coolant placed inside the receiving cavity; the plugging and unplugging operation of this new energy vehicle charging cable is difficult and has low precision.

[0005] In actual use, if the outside temperature is too high at noon, the internal temperature of the charging cable will rise accordingly during charging, posing a safety risk. If the outside temperature is too low at night, the charging cable needs to be preheated and its heating efficiency improved during charging. Therefore, the charging cable lacks an adaptive adjustment function for the charging temperature, ultimately reducing charging efficiency and charging effect.

[0006] Meanwhile, when regulating the temperature of the charging cable, heat exchange is required using coolant, but this process is prone to heat loss, thereby reducing energy utilization and recycling efficiency.

[0007] When a charging cable is bent or deformed by external pressure during charging, failure to adjust the cable's own support force in time will not only damage the cable's structure, but also cause changes in the internal temperature of the cable, affecting charging efficiency.

[0008] Furthermore, the flexibility of the charging cable itself needs to vary during charging and plugging / unplugging. For example, the charging cable needs to be more flexible during plugging / unplugging to facilitate the operator's movement and plugging / unplugging of the charging cable, while it needs to be less flexible during charging to avoid the impact of external environmental forces on the normal operation of the charging cable.

[0009] Meanwhile, when the charging cable overheats and catches fire, existing technologies lack the function of rapid cooling and fire extinguishing at specific points inside the charging cable, which can easily cause the charging pile and new energy vehicle to catch fire simultaneously, resulting in significant safety and economic losses. Summary of the Invention

[0010] To address the above problems, this invention provides a wear-resistant and insulated charging cable.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a wear-resistant and insulated charging cable, comprising multiple cores, wherein multiple fixing rings are uniformly arranged on the outer surface of the multiple cores, and a transfer cavity is formed inside the fixing rings, wherein an inner ring is movably connected to the inside of the transfer cavity in a sealed manner;

[0012] A first flow tube is provided through the axis of the plurality of fixed rings, and a plurality of second flow tubes are provided through the interior of the plurality of fixed rings;

[0013] The inner ring has evenly spaced movable cavities inside. Each movable cavity has two symmetrically spaced connecting holes inside. Each connecting hole has two symmetrically spaced fixing blocks inside. A sliding plate is slidably connected between the two fixing blocks. A movable plate is provided on one side of the sliding plate. The side wall of the movable plate has two symmetrically spaced telescopic parts.

[0014] The telescopic section monitors the core temperature in real time. When the core temperature rises, the telescopic section moves the sliding plate, causing misalignment between the sliding plate and the fixed block. This increases the coolant flow rate at that location, thus improving the cooling effect. Simultaneously, when the core is bent, the heat increases accordingly, and the increased coolant flow rate improves its resistance to bending, ensuring the core continues to work stably. When the temperature is too high, the coolant is discharged directly through the lower through hole for fire suppression, further achieving adaptive safety protection for the core.

[0015] Preferably, the fixing ring has a central hole at its axis, the inner wall of the central hole is sealed to the outer surface of the first flow tube, and multiple matching holes are evenly provided on both sides of the transfer cavity, and both sides of the second flow tube are connected to two opposite matching holes.

[0016] Preferably, the fixed block has a plurality of flow holes evenly distributed inside, the sliding plate has a plurality of docking holes evenly distributed inside, the flow holes and docking holes are staggered, the end of the telescopic part away from the moving plate is fixedly connected to the side wall of the fixed block, and each telescopic part has an elastic part inside.

[0017] Preferably, the connecting hole is connected to the transfer cavity, and the multiple matching holes located at both ends and facing away from each other are provided with end caps, and the shaft hole located on one side of the end is provided with a plug cap.

[0018] Preferably, the end of the first flow tube is connected to the transfer cavity located at the end, and the end cap is provided with a plurality of blocking blocks evenly on the side near the connecting hole, and the plurality of blocking blocks are staggered from the fixing block.

[0019] Preferably, a drain hole is connected to one side of the movable cavity near the axis, and multiple receiving holes are evenly opened inside the fixed ring, the width of the receiving hole being smaller than the width of the drain hole.

[0020] Preferably, the sides of the plurality of receiving holes that are opposite to each other are matched with the side of the drain hole that is away from the active cavity. The side of the receiving hole that is away from the drain hole is connected to a side drain hole, and the bottom of the transfer cavity located at the end is connected to a lower through hole.

[0021] Preferably, the outer surface of the wire core is provided with an insulating layer, the outer surface of the plurality of fixing rings is provided with a protective sleeve, a plurality of filling layers are uniformly provided between the protective sleeve and the insulating layer, a plurality of mounting holes are uniformly opened inside the fixing ring and the inner ring, an isolation sleeve is provided on the inner wall of the mounting hole, the inner wall of the isolation sleeve is sealed to the outer surface of the insulating layer, and the outer surface of the isolation sleeve is connected to the interior of the transfer cavity.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention utilizes the cooperation of components such as wire core, insulation layer, filling layer, protective sleeve and cabinet to produce a wear-resistant and insulated charging cable with high charging efficiency and good charging effect, meeting the charging needs of different new energy vehicles. It is simple to operate, highly adaptable to control, safe and stable, and continuously efficient.

[0024] 2. This invention achieves precise temperature regulation of the wire core by setting up components such as a fixing block, flow hole, sliding plate, and docking hole in coordination to adjust the flow rate of coolant according to different ambient temperatures. This ensures that the conductive temperature of the wire core meets the requirements and improves the charging rate and charging effect.

[0025] 3. By setting up components such as the first flow tube and the second flow tube to cooperate with each other, the coolant is continuously circulated and reused inside the first flow tube and the second flow tube, thus turning energy from a harmful resource into a beneficial one and avoiding energy pollution and waste.

[0026] 4. By setting up telescopic parts and moving plates and other components in cooperation, the present invention adjusts the flow rate of coolant inside the first and second flow tubes according to different usage scenarios during the movement and charging of the charging cable. This effectively achieves the tension adjustment of the charging cable itself. While meeting the operator's needs for convenient and efficient movement of the charging cable, it can also ensure the stability of the charging cable and avoid the impact of external environmental forces on the normal plugging and charging of the charging cable.

[0027] 5. By setting up components such as drain holes and side drain holes in cooperation, when a short circuit occurs in the wire core and a fire occurs, the coolant flows efficiently and precisely along the second flow pipe to extinguish the fire, effectively preventing the fire from causing damage to the charging pile or new energy vehicle, reducing the occurrence of major safety and economic accidents, and ensuring the safety and stability of the charging cable. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of the cable of the present invention;

[0029] Figure 2 This is a rear-view three-dimensional structural diagram of the cable of the present invention;

[0030] Figure 3 This is a frontal view of the internal three-dimensional structure of the cable of the present invention;

[0031] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the cable in the present invention, viewed from the left.

[0033] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 This is a top view of the internal three-dimensional structure of the cable of the present invention;

[0035] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0036] Figure 9 This is a three-dimensional exploded view of the internal structure of the fixed ring of the present invention;

[0037] Figure 10 This is a three-dimensional structural diagram of the charging pile of the present invention;

[0038] Figure 11 This is a frontal three-dimensional view of the internal structure of the charging pile of the present invention.

[0039] In the diagram: 1. Core wire; 2. Insulation layer; 3. Filler layer; 4. Protective sleeve; 5. Retaining ring; 6. Shaft hole; 7. Mounting hole; 8. Movable cavity; 9. Connecting hole; 10. Fixing block; 11. Flow hole; 12. Slide plate; 13. Connecting hole; 14. Moving plate; 15. Telescopic part; 16. Elastic part; 17. Drain hole; 18. Side drain hole; 19. Transfer cavity; 20. Matching hole; 21. First flow tube; 22. Second flow tube; 23. End cap 24. Plug cap; 25. Lower through hole; 26. Isolation sleeve; 27. Inner ring; 28. Receiving hole; 29. ​​Blocking block; 30. Radiator; 31. Operating button; 32. Inner cavity; 33. Connecting bracket; 34. Storage cavity; 35. Partition plate; 36. Condenser; 37. Circulating pump; 38. Distribution cabinet; 39. Top pipe; 40. Bottom pipe; 41. Perforation; 42. Gun head; 43. Cabinet; 44. Control panel; 45. Hook; 46. Base box. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] A wear-resistant and insulated charging cable includes multiple cores 1 for transmitting power. Multiple fixing rings 5 ​​are evenly distributed on the outer surface of the cores 1, dividing the long cable into multiple sections and precisely adjusting the heat dissipation and support effects of the cores 1 at different positions according to actual conditions. An insulation layer 2, made of polyvinyl chloride (PVC), is provided on the outer surface of the cores 1, wrapping and protecting the internal cores 1 to further improve the stability and efficiency of power transmission. A protective sleeve 4, also made of PVC, is provided on the outer surface of the fixing rings 5, serving as the outermost protective structure and possessing wear-resistant and insulating functions. Multiple filling layers 3, made of fiber material, are evenly distributed between the protective sleeve 4 and the insulation layer 2, ensuring the protective sleeve 4 provides support and protection for the internal cores 1.

[0042] The fixed ring 5 has a transfer cavity 19 inside, where coolant flows, further providing fixed-point heat dissipation support for the wire core 1. The transfer cavity 19 is sealed and movably connected to an inner ring 27, which changes accordingly with the flow direction of the coolant, thereby achieving efficient use of energy, turning harm into benefit, and avoiding waste.

[0043] Multiple fixing rings 5 ​​have a first flow tube 21 running through their axis, and multiple fixing rings 5 ​​have multiple second flow tubes 22 running through their interiors. The coolant inside the first flow tube 21 and the second flow tube 22 circulates continuously, which not only achieves heat exchange at the apex of the wire core 1, but also adjusts the support performance of the wire core 1 at different positions, thereby improving the support and stability for charging new energy vehicles.

[0044] Multiple mounting holes 7 are evenly provided inside the fixing ring 5 and the inner ring 27. The inner wall of the mounting hole 7 is provided with an isolation sleeve 26. The mounting hole 7 supports and fixes the inner isolation sleeve 26. The inner wall of the isolation sleeve 26 is sealed to the outer surface of the insulation layer 2, which further improves the installation efficiency of the insulation layer 2 and the wire core 1 inside the isolation sleeve 26. The outer surface of the isolation sleeve 26 is connected to the inside of the transfer cavity 19, and the coolant inside the transfer cavity 19 flows on the outer surface of the isolation sleeve 26 to ensure the heat exchange efficiency of the inner wire core 1.

[0045] A central hole 6 is provided at the center of the fixed ring 5. The inner wall of the central hole 6 is sealed to the outer surface of the first flow tube 21. The central hole 6 is used to install and fix the first flow tube 21. Multiple matching holes 20 are evenly provided on both sides of the transfer cavity 19. Both sides of the second flow tube 22 are connected to two opposite matching holes 20. The matching holes 20 are used to install and fix the second flow tube 22.

[0046] The inner ring 27 has evenly distributed movable cavities 8. The movable cavities 8 are circumferentially distributed. One side of the movable cavity 8 is connected to a drain hole 17 near the axis. The drain hole 17 is designed so that when the temperature of the wire core 1 is too high, the coolant can directly enter the interior of the movable cavity 8 and be quickly discharged along the drain hole 17 to extinguish the fire, thus avoiding the wire core 1 from overheating and causing major safety accidents such as fire.

[0047] The active cavity 8 has two symmetrically arranged connecting holes 9, which are connected to the transfer cavity 19 and correspond to the matching hole 20. The coolant inside the second flow tube 22 can flow into the connecting hole 9 through the matching hole 20. The connecting hole 9 has two symmetrically arranged fixed blocks 10, which remain in the same position. A sliding plate 12 is sealed and slidably connected between the two fixed blocks 10. The sliding plate 12 moves between the two fixed blocks 10 to adjust the coolant flow rate. The fixed blocks 10 have multiple flow holes 11 evenly arranged inside, and the sliding plate 12 has multiple docking holes 13 evenly arranged inside. The flow holes 11 and docking holes 13 are staggered. That is, the larger the overlapping area of ​​the flow holes 11 and docking holes 13, the larger the amount of coolant that the second flow tube 22 conveys backward. The heat exchange efficiency between the coolant and the core 1 at that position is greater, thereby achieving fixed-point heat exchange of the core 1 at different positions and ensuring the constant temperature of the core 1.

[0048] A movable plate 14 is provided on one side of the slide plate 12. When the movable plate 14 moves, it synchronously drives the slide plate 12 to move between two fixed blocks 10. Two telescopic parts 15 are symmetrically provided on the side wall of the movable plate 14. The telescopic parts 15 can be corrugated sleeve structures. The end of the telescopic part 15 away from the movable plate 14 is fixedly connected to the side wall of the fixed block 10. The inside of the telescopic part 15 is a thermal expansion material. The thermal expansion material has the principle of thermal expansion and contraction. When the temperature of the wire core 1 at this position rises, the thermal expansion material inside the telescopic part 15 increases in volume under the principle of thermal expansion and contraction and drives the movable plate 14 to move. The movable plate 14 drives the slide plate 12 to move between the two fixed blocks 10. Each telescopic part 15 is provided with an elastic part 16. The elastic part 16 can be a spring structure. The setting of the elastic part 16 further realizes the elastic reset performance of the telescopic part 15 and the movable plate 14, ensuring the stability and accuracy of the slide plate 12 moving between the fixed blocks 10.

[0049] Multiple matching holes 20 located at both ends and facing each other are provided with end caps 23. The end caps 23 block the matching holes 20 located at the ends to prevent the matching holes 20 at the ends from being disconnected by the second flow tubes 22 and causing the coolant to be discharged. The axial hole 6 located on one side of the end is provided with a blocking cap 24. The end of the first flow tube 21 is connected to the transfer cavity 19 located at the end. When the coolant inside the first flow tube 21 reaches the end, it flows back into the transfer cavity 19 under the blocking effect of the blocking cap 24, and finally enters the matching hole 20 along multiple flow holes 11 and docking holes 13, thereby realizing the flow in the subsequent multiple second flow tubes 22 and accurately adjusting and cooling the core 1.

[0050] Multiple blocking blocks 29 are evenly provided on the side of the end cap 23 near the connecting hole 9. The multiple blocking blocks 29 are all staggered with the fixed block 10. The multiple blocking blocks 29 block the inner ring 27, so as to prevent the inner ring 27 located at both ends from sticking to the inner wall of the transfer cavity 19 under the pushing action of the coolant and affecting the normal flow and cooling of the coolant.

[0051] The bottom of the transfer cavity 19 at the end is connected to a lower through hole 25. The coolant inside the transfer cavity 19 at the very end can flow directly along the lower through hole 25, thereby realizing the recirculation of the coolant, improving the fluidity of the coolant, and turning energy from waste into benefit. The fixed ring 5 has multiple receiving holes 28 evenly distributed inside. The position of the receiving holes 28 remains unchanged. The width of the receiving holes 28 is smaller than the width of the drain hole 17. The multiple receiving holes 28 are all matched with the side of the drain hole 17 away from the moving cavity 8 when they face away from each other. Therefore, when the inner ring 27 moves inside the transfer cavity 19, the drain hole 17 is always aligned with the receiving holes 28. The receiving hole 28 is connected to a side drain hole 18 on the side away from the drain hole 17. Both sides of the side drain hole 18 pass through the fixing ring 5 and are connected to the inside of the filling layer 3. When the coolant inside the movable cavity 8 is discharged downward along the drain hole 17, the coolant inside the drain hole 17 enters the side drain hole 18 through the receiving hole 28. Then the coolant inside the side drain hole 18 flows continuously to both sides and enters the filling layer 3, which further realizes the rapid flushing and cooling of the wire core 1, avoiding the wire core 1 from overheating at this position and causing fire or other dangers to the surrounding charging piles or vehicles, thereby improving the safety and stability of actual use.

[0052] The specific application of this wear-resistant and insulated charging cable in a charging pile is as follows: The charging pile includes a cabinet 43, with a bottom box 46 at the bottom of the cabinet 43. An inner cavity 32 is opened inside the cabinet 43, which mainly stores various electrical equipment. Multiple connecting frames 33 are evenly arranged on the inner wall of the inner cavity 32, and multiple distribution cabinets 38 are evenly arranged above the connecting frames 33. The setting of the connecting frames 33 improves the support and fixation effect of the multiple distribution cabinets 38. The input end of the wire core 1 is connected to the output end of the distribution cabinet 38. Two through holes 41 are symmetrically arranged inside the cabinet 43. The end of the wire core 1 away from the distribution cabinet 38 passes through the through hole 41 and is equipped with a gun head 42. The through hole 41 fixes and protects the cable, while the power inside the distribution cabinet 38 reaches the gun head 42 along the wire core 1 and enters the new energy vehicle for charging along the gun head 42.

[0053] A control panel 44 is provided on one side of the cabinet 43. Multiple operation buttons 31 are evenly arranged on both sides of the control panel 44. The control panel 44 electrically controls various electrical components. Multiple heat sinks 30 are evenly arranged on the other side of the cabinet 43. The heat sinks 30 improve the heat dissipation effect inside the inner cavity 32. Multiple hooks 45 are evenly arranged on both sides of the cabinet 43. The hooks 45 match the wire core 1. The hooks 45 improve the hanging and support effect of the cable.

[0054] Two condensers 36 are symmetrically arranged on the inner wall of the inner cavity 32. The condensers 36 cool the coolant. A circulation pump 37 is provided at the bottom output end of the condenser 36. A top tube 39 is provided at the bottom output end of the circulation pump 37. The bottom output end of the top tube 39 passes through the charging cable of the new energy vehicle and is connected to the end of the first flow tube 21. The top tube 39 does not obstruct the normal operation of multiple cores 1. The circulation pump 37 starts in the forward direction and passes the low temperature coolant inside the condenser 36 into the first flow tube 21 along the top tube 39 and circulates it. It then flows back to the multiple second flow tubes 22 along the first flow tube 21, further improving the cooling effect on the top of the core 1.

[0055] The bottom box 46 has a storage chamber 34 inside, which is used to store the high-temperature coolant after heat exchange of the wire core 1. A partition 35 is provided at the center of the storage chamber 34, which divides the storage chamber 34 into two spaces. The two spaces are matched with the corresponding circulation pumps 37, so as to realize the separate control and adjustment of the two charging cables. Two bottom tubes 40 are symmetrically arranged inside the storage chamber 34. The top of the bottom tube 40 passes through the bottom box 46 and the cabinet 43 and is connected to the bottom of the lower through hole 25. When the outside environment is low temperature, the circulation pump 37 applies a suction force to the storage chamber 34 when it starts in reverse. The high-temperature coolant inside the storage chamber 34 enters the second flow tube 22 along the bottom tube 40 and flows back to the first flow tube 21 along the second flow tube 22 to wait for subsequent condensation and cooling. At the same time, the high-temperature coolant can also preheat the wire core 1 in the low temperature environment when it flows, thereby improving the subsequent power carrying efficiency of the wire core 1 in the low temperature environment.

[0056] In actual use, the aforementioned wear-resistant and insulated new energy vehicle cables face several challenges. If the ambient temperature is too high at midday, the internal temperature of the charging cable will rise accordingly during charging, posing a safety risk. Conversely, if the ambient temperature is too low at night, the charging cable needs preheating to improve heating efficiency. Current technologies lack adaptive temperature control for the charging cable, ultimately reducing charging efficiency and effectiveness. Furthermore, temperature regulation of the charging cable using coolant for heat exchange can easily lead to energy loss, reducing energy utilization and recycling efficiency. Additionally, if the charging cable is bent or subjected to external pressure during charging, the inability to adjust the cable temperature promptly will further exacerbate the problem. The self-supporting force will not only damage the structure of the charging cable, but also cause changes in the internal temperature of the charging cable, affecting the charging efficiency. Furthermore, the charging cable needs different flexibility during charging and plugging / unplugging. For example, the charging cable needs greater flexibility during plugging / unplugging to facilitate the operator's movement and plugging / unplugging of the charging cable, while it needs less flexibility during charging to avoid the external environment affecting the normal operation of the charging cable. At the same time, when the charging cable temperature is too high and there is a risk of fire, if there is no targeted rapid cooling and fire extinguishing function inside the charging cable, it is easy to cause the charging pile and new energy vehicle to catch fire simultaneously, resulting in significant safety and economic losses.

[0057] To solve the above problems, in actual use, the wear-resistant and insulated charging cable is assembled according to the above process. At the same time, the operator connects the gun head 42 to the charging port of the new energy vehicle and controls the charging pile to start with the help of the control panel 44. The power inside the distribution cabinet 38 enters the new energy vehicle through the gun head 42 along the core 1 for charging.

[0058] Under the high temperature of midday, the control panel 44 controls the condenser 36 to start, and at the same time the circulation pump 37 starts in the forward direction and introduces the low temperature coolant into the first flow tube 21 along the top tube 39. The low temperature coolant in the first flow tube 21 continuously flows towards the nozzle 42 and rapidly cools the wire core 1. At the same time, when the low temperature coolant in the first flow tube 21 reaches the nozzle 42, it enters the transfer chamber 19 under the obstruction of the blocking cover 24. At this time, the low temperature coolant reaches the matching hole 20 along the overlapping position of the flow hole 11 and the docking hole 13, and enters the second flow tube 22 along the matching hole 20 to continue flowing backward to cool the top of the wire core 1. At the same time, after passing through multiple second flow tubes 22, the low temperature coolant reaches the bottom tube 40 along the lower through hole 25, and finally enters the storage chamber 34 along the bottom tube 40 for temporary storage.

[0059] Simultaneously, when the cryogenic coolant flows inside the transfer chamber 19, it correspondingly pushes the inner ring 27 to move along the flow direction inside the transfer chamber 19. The matching hole 20 corresponds to the second flow tube 22, thereby ensuring that the cryogenic coolant after passing through the flow hole 11 and the docking hole 13 directly enters the subsequent second flow tube 22 for flow and cooling. Furthermore, the cryogenic coolant undergoes rapid heat exchange with the wire core 1, thereby ensuring that the working temperature of the wire core 1 remains stable at all times. At the same time, the temperature of the cryogenic coolant rises after heat exchange and is temporarily stored inside the storage chamber 34. This not only ensures rapid and efficient use when preheating the wire core 1, but also allows the high-temperature coolant inside the storage chamber 34 to dry the bottom of the base box 46, preventing the charging pile from reaching the inner cavity 32 in a humid outdoor environment and causing corrosion damage to the distribution cabinet 38. This effectively achieves the repeated and efficient use of energy, turning heat from a harmful resource into a beneficial one and ensuring that the required energy is used efficiently and with low loss.

[0060] Simultaneously, when the external high temperature increases the amount of heat applied to a certain core 1 at noon, or when the core 1 is damaged during its own charging process, the temperature of the core 1 at the corresponding position rises. As a result, the temperature of the thermal expansion material inside the telescopic part 15 rises and its volume increases. The telescopic part 15 then drives the moving plate 14 to move away from the fixed block 10. The moving plate 14 simultaneously drives the sliding plate 12 to move between the two fixed blocks 10. The sliding plate 12 then drives multiple docking holes 13 to move. The overlapping area of ​​the docking holes 13 and the flow holes 11 increases. The flow rate of the low-temperature coolant inside the transfer chamber 19 into the second flow tube 22 along the docking holes 13 and the flow holes 11 increases. Consequently, the heat exchange efficiency of the low-temperature coolant inside the second flow tube 22 on the core 1 at that position is enhanced, further improving the cooling effect on the core 1 at that position and ensuring that the working temperature of the core 1 remains stable at all times, thereby improving the stability and efficiency of charging.

[0061] Meanwhile, as the outside temperature drops at night, the thermal expansion material inside the telescopic part 15 decreases in volume due to thermal expansion and contraction. The telescopic part 15 drives the moving plate 14 to move closer to the fixed block 10. The moving plate 14 simultaneously drives the sliding plate 12 to move between the two fixed blocks 10. Since the number of docking holes 13 inside the sliding plate 12 is greater than the number of flow holes 11 inside the fixed block 10, the docking holes 13 and flow holes 11 continue to move after being blocked, and the subsequent overlapping area gradually increases. At the same time, the control panel 44 controls the condenser 36 to stop working, the circulation pump 37 starts in reverse and applies suction force to the bottom pipe 40, storing... The high-temperature coolant inside cavity 34 flows upward along bottom pipe 40 and lower through hole 25 to the transfer cavity 19. At this time, under the pushing action of the high-temperature coolant, the inner ring 27 moves in another direction inside the transfer cavity 19. The high-temperature coolant enters the second flow pipe 22 through the overlapping position of flow hole 11 and docking hole 13, and reaches the transfer cavity 19 at the end through multiple second flow pipes 22 and continues to flow back to the first flow pipe 21. After passing through the first flow pipe 21, it flows back to the condenser 36 along top pipe 39 to wait for subsequent condensation, thereby realizing the circulation of coolant and ensuring continuous, stable and efficient heat exchange of coolant.

[0062] Simultaneously, the high-temperature coolant exchanges heat with the core 1 as it passes through the first flow tube 21 and the second flow tube 22, thereby increasing the temperature of the core 1 and preheating it. This prevents direct power transmission into the core 1 and avoids power loss. As the temperature of the core 1 at a certain position continues to decrease, the thermal expansion material inside the telescopic part 15 continues to decrease in volume due to thermal expansion and contraction. The telescopic part 15 drives the moving plate 14 to move closer to the fixed block 10. The moving plate 14 simultaneously drives the sliding plate 12 to move between the two fixed blocks 10. The overlapping area of ​​the flow hole 11 and the docking hole 13 increases, and the flow rate of the high-temperature coolant in the transfer cavity 19 into the second flow tube 22 along the flow hole 11 and the docking hole 13 increases. This improves the heat exchange efficiency of the high-temperature coolant on the core 1, further improving the preheating efficiency of the core 1 and ensuring that the temperature of the core 1 is always at its optimal state, thereby improving the electrical stability and efficiency of the core 1.

[0063] When the charging cable is bent more or squeezed, the resistance of the wire core 1 inside the charging cable increases, and the temperature at the corresponding position rises. As mentioned above, the thermal expansion material inside the telescopic part 15 increases in volume due to its own thermal expansion and contraction. The telescopic part 15 drives the moving plate 14 to move away from the fixed block 10. The overlapping area of ​​the flow hole 11 inside the fixed block 10 and the docking hole 13 inside the sliding plate 12 increases, and the flow rate of the coolant inside the second flow tube 22 at the corresponding position increases. At this time, the coolant not only achieves fixed-point temperature regulation of the wire core 1, but also increases the tension of the inner wall of the second flow tube 22 by its own impact force when flowing. The second flow tube 22 increases the tension on the protective sleeve 4. Under this force, the protective sleeve 4 continuously reverses to restore the straight state, thereby ensuring the non-bending state of the protective sleeve 4 and the internal wire core 1, and improving the conductivity stability and conductivity of the wire core 1.

[0064] Similarly, when the charging cable is in the plugged-in / plugged-out state, if the charging cable has too low flexibility, the operator cannot hold the gun head 42 and rotate the charging cable. At this time, because the control panel 44 controls the circulation pump 37 to stop working, the coolant cannot flow inside the first flow tube 21 and the second flow tube 22. The impact force of the coolant on the inner wall of the first flow tube 21 and the second flow tube 22 is zero, and the tension of the first flow tube 21 and the second flow tube 22 is minimal. Therefore, it is convenient for the operator to hold the gun head 42 and rotate the charging cable to perform the required plugging and unplugging process with the charging port of the new energy vehicle.

[0065] When the plugging and unplugging are completed and charging begins, the circulation pump 37 starts and causes coolant to flow inside the first flow tube 21 and the second flow tube 22. The coolant exerts an impact force on the inner walls of the first flow tube 21 and the second flow tube 22. The first flow tube 21 and the second flow tube 22 exert a supporting force on the inner wall of the protective sleeve 4 through the filling layer 3, which correspondingly increases the tension of the charging cable itself. This effectively improves the resistance of the charging cable to external forces and effectively avoids problems such as the charging cable pulling the gun head 42 out of the charging port of the new energy vehicle, thus ensuring the continuity and stability of charging.

[0066] When a short circuit or other problem occurs in the wire core 1, causing the temperature at the telescopic section 15 to rise continuously and reach its maximum value, resulting in a fire, the control panel 44 first controls the power distribution cabinet 38 to cut off the power, and the wire core 1 is no longer energized. Simultaneously, the thermal expansion material inside the telescopic section 15 continuously increases in volume due to thermal expansion and contraction, reaching its maximum value. The telescopic section 15 drives the moving plate 14 to move to the maximum distance away from the fixed block 10. Simultaneously, the moving plate 14 drives the sliding plate 12 to move to the maximum distance between the two fixed blocks 10. The end of the sliding plate 12 away from the moving plate 14 moves between the two fixed blocks 10, and the coolant inside the first flow pipe 21 and the second flow pipe 22... The cold coolant enters the transfer chamber 19 at the location of the fire. The cold coolant inside the transfer chamber 19 flows through the flow hole 11 into the space between the two fixed blocks 10 inside the movable chamber 8, and continues to reach the drain hole 17 inside the movable chamber 8. At this time, the cold coolant continues to enter the side drain hole 18 through the receiving hole 28, and flows to both sides of the side drain hole 18 into the filling layer 3. The cold coolant can quickly and efficiently flush and extinguish the fire at the fire end of the wire core 1 inside the filling layer 3, preventing the fire from spreading along the wire core 1 to the charging pile or new energy vehicle end and causing a major economic and safety accident. This effectively cuts off the fire from the source and improves the safety protection requirements.

[0067] After the power outage and fire extinguishing are completed, cut off the damaged part of the charging cable and reconnect the new charging cable. Then, follow the above process to charge the new energy vehicle using the wear-resistant and insulated charging cable.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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.

[0069] 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 wear-resistant and insulated charging cable, characterized in that, It includes multiple wire cores, and multiple fixing rings are evenly provided on the outer surface of the multiple wire cores. A transfer cavity is opened inside the fixing ring, and an inner ring is movably connected to the inside of the transfer cavity in a sealed manner. A first flow tube is provided through the axis of the plurality of fixed rings, and a plurality of second flow tubes are provided through the interior of the plurality of fixed rings; The inner ring has evenly spaced movable cavities inside. Each movable cavity has two symmetrically spaced connecting holes inside. Each connecting hole has two symmetrically spaced fixing blocks inside. A sliding plate is slidably connected between the two fixing blocks. A movable plate is provided on one side of the sliding plate. The side wall of the movable plate has two symmetrically spaced telescopic parts. The fixed ring has a central hole at its center, and the inner wall of the central hole is sealed to the outer surface of the first flow tube. Multiple matching holes are evenly provided on both sides of the transfer cavity, and both sides of the second flow tube are connected to two opposite matching holes. The fixed block has multiple flow holes evenly distributed inside, and the sliding plate has multiple docking holes evenly distributed inside. The flow holes and docking holes are staggered. The end of the telescopic part away from the moving plate is fixedly connected to the side wall of the fixed block. Each telescopic part has an elastic part inside. The connecting hole is connected to the transfer cavity. The multiple matching holes located at both ends and facing away from each other are provided with end caps. The shaft hole located on one side of the end is provided with a plug cap. The end of the first flow tube is connected to the transfer cavity located at the end. The end cap is provided with a plurality of blocking blocks evenly on the side near the connecting hole, and the plurality of blocking blocks are staggered from the fixing block.

2. The wear-resistant and insulated charging cable according to claim 1, characterized in that, A drain hole is connected to one side of the movable cavity near the axis, and multiple receiving holes are evenly opened inside the fixed ring. The width of the receiving hole is smaller than the width of the drain hole.

3. The wear-resistant insulated charging cable according to claim 2, characterized in that, The multiple receiving holes are all matched with the side of the drain hole away from the active cavity on opposite sides. The side of the receiving hole away from the drain hole is connected to a side drain hole, and the bottom of the transfer cavity at the end is connected to a lower through hole.

4. The wear-resistant and insulated charging cable according to claim 1, characterized in that, The outer surface of the core wire is provided with an insulating layer, and the outer surface of the plurality of fixing rings is provided with a protective sleeve. A plurality of filling layers are uniformly provided between the protective sleeve and the insulating layer. A plurality of mounting holes are uniformly opened inside the fixing rings and the inner ring. An isolation sleeve is provided on the inner wall of the mounting hole. The inner wall of the isolation sleeve is sealed to the outer surface of the insulating layer. The outer surface of the isolation sleeve is connected to the interior of the transfer cavity.

Images