Wear-resistant insulating charging cable

Abstract

The invention belongs to the technical field of new energy automobile charging cables, and particularly relates to a wear-resistant insulating charging cable. Comprising a plurality of wire cores, a plurality of fixing rings are uniformly arranged on the outer surfaces of the wire cores, a transfer cavity is formed in each fixing ring, and an inner ring is movably connected to the interior of each transfer cavity in a sealed mode; a first flow pipe is arranged at the axis of the multiple fixing rings in a penetrating mode, and a plurality of second flow pipes are arranged in the multiple fixing rings in a penetrating mode. Movable cavities are uniformly formed in the inner ring, a drainage hole communicates with the position, close to the axis, of one side of each movable cavity, two communicating holes are symmetrically formed in each movable cavity, and two fixing blocks are symmetrically arranged in each communicating hole; the wear-resistant insulating charging cable is high in charging efficiency, good in charging effect, simple to operate, high in regulation and control adaptability, safe, stable, continuous and efficient, and meets the charging requirements of different new energy automobiles.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle charging cables, in particular to a charging cable with wear-resistant insulation. Background Art

[0002] Electric vehicles are emerging all over the world, which has played a positive role in promoting the further popularization of electric vehicles. New energy vehicle charging cables are key components connecting electric vehicles and charging facilities. They 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 run normally. Therefore, the performance of new energy vehicle charging cables directly affects the safety and efficiency of charging.

[0003] Chinese invention patent CN114822957B discloses a cable for new energy vehicles, comprising: multiple conductors, each comprising a conductor core and an insulating layer covering the conductor core; reinforcing ribs are axially arranged 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 is provided 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 outer side of which is wrapped with an insulating layer; a sheath, which is sleeved on the insulating layer, and the sheath has a receiving cavity, in which a coolant is placed; the new energy vehicle charging cable is difficult to plug and unplug and has low plug and unplug precision.

[0005] When the above-mentioned new energy vehicle cable is actually used, if the outside temperature is too high at noon, the internal temperature of the charging cable will rise accordingly during charging and there will be a safety risk. If the outside temperature is too low at night, the charging cable needs to be preheated during the charging process and the heating efficiency needs to be improved. Therefore, the process lacks the adaptive adjustment function of the charging temperature of the charging cable, which ultimately reduces the charging efficiency and charging effect.

[0006] At the same time, when adjusting the temperature of the charging cable, heat exchange is required with the help of coolant, but this process easily causes heat loss, thereby reducing energy utilization and recycling effects.

[0007] When the charging cable bends during charging or is deformed by external pressure, if the supporting force of the charging cable cannot be adjusted in time, not only will the structure of the charging cable be damaged, but the internal temperature of the charging cable will also change accordingly, affecting the charging efficiency.

[0008] In addition, the flexibility of the charging cable itself needs to be different during the charging and plugging and unplugging processes. For example, the charging cable needs to be more flexible during the plugging and unplugging process to facilitate the operator to move and plug and unplug the charging cable. The charging cable needs to be less flexible during the charging process to avoid the external environment's force affecting the normal operation of the charging cable.

[0009] At the same time, when the charging cable temperature is too high and a fire occurs, the existing technology lacks the function of quickly cooling and extinguishing the fire at a fixed point inside the charging cable, which can easily cause the charging pile and the new energy vehicle to catch fire simultaneously, thereby causing significant safety and economic losses. Summary of the Invention

[0010] In view of the above problems, the present invention provides a charging cable with wear-resistant insulation.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a wear-resistant insulated charging cable comprising a plurality of cores, wherein a plurality of fixing rings are evenly disposed on the outer surfaces of the cores, wherein a transfer cavity is defined within the fixing rings, and wherein the interior of the transfer cavity is sealed and movably connected to an inner ring; A first flow tube is provided through the axis of each of the plurality of fixing rings, and a second flow tube is provided through the interior of each of the plurality of fixing rings. The inner ring is evenly provided with movable cavities, the movable cavities are symmetrically provided with two communicating holes, the communicating holes are symmetrically provided with two fixed blocks, a slide is sealed and slidably connected between the two fixed blocks, a movable plate is provided on one side of the slide, and two telescopic parts are symmetrically provided on the side wall of the movable plate.

[0012] The telescopic part monitors the temperature of the wire core in real time. When the temperature of the wire core rises, the telescopic part drives the slide to move, and the slide is misaligned with the fixed block, so the flow of coolant at that position increases, thereby improving the cooling effect accordingly. At the same time, when the wire core is bent, the heat increases accordingly, and the increase in coolant flow increases its anti-bending effect, thereby ensuring that the wire core continues to work stably. When the temperature is too high, the coolant is directly discharged along the lower through hole to extinguish the fire, thereby further realizing adaptive safety protection of the wire core.

[0013] Preferably, an axial hole is opened at the axis center of the fixing ring, the inner wall of the axial hole is sealed and connected to the outer surface of the first flow tube, a plurality of matching holes are evenly opened on both sides of the transfer cavity, and both sides of the second flow tube are connected to the two facing matching holes.

[0014] Preferably, a plurality of flow holes are evenly opened inside the fixed block, a plurality of docking holes are evenly opened inside the slide plate, the flow holes and docking holes are staggered, the end of the telescopic part away from the movable plate is fixedly connected to the side wall of the fixed block, and an elastic part is provided inside the telescopic part.

[0015] Preferably, the communicating hole is connected to the transfer cavity, and end covers are provided inside the multiple matching holes located at both ends and facing each other, and a blocking cover is provided inside the axial hole located at one end side.

[0016] Preferably, the end of the first flow tube is communicated with the transfer cavity located at the end, and a plurality of blocking blocks are evenly provided on one side of the end cover close to the communicating hole, and the plurality of blocking blocks are staggered with the fixing blocks.

[0017] Preferably, a leakage hole is connected to one side of the movable cavity near the axis, and a plurality of receiving holes are evenly opened inside the fixing ring, and the width of the receiving holes is smaller than the width of the leakage hole.

[0018] Preferably, the sides of the multiple receiving holes facing away from each other match the side of the leakage hole away from the active cavity, the side of the receiving hole away from the leakage hole is connected to the side row hole, and the bottom of the transfer cavity at the end is connected to the lower through hole.

[0019] Preferably, an insulating layer is provided on the outer surface of the wire core, a protective cover is provided on the outer surface of the plurality of fixing rings, a plurality of filling layers are evenly provided between the protective cover and the insulating layer, a plurality of mounting holes are evenly opened inside the fixing ring and the inner ring, an insulating cover is provided on the inner wall of the mounting hole, the inner wall of the insulating cover is sealed with the outer surface of the insulating layer, and the outer surface of the insulating cover is communicated with the interior of the transfer cavity.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention relies on the mutual cooperation of components such as the wire core, insulation layer, filling layer, protective cover and cabinet body. The wear-resistant insulated charging cable has high charging efficiency and good charging effect, meets the charging needs of different new energy vehicles, is simple to operate, has strong control adaptability, is safe and stable, and is continuously efficient.

[0021] 2. The present invention adjusts the flow rate of the coolant according to the different external ambient temperatures by setting the mutual cooperation of components such as the fixed block, flow hole, slide plate and docking hole, thereby achieving fixed-point precise temperature regulation of the wire core, ensuring that the conductive temperature of the wire core meets the requirements, and improving the charging rate and charging effect.

[0022] 3. The present invention arranges the first flow tube and the second flow tube and other components to cooperate with each other, so that the coolant is continuously circulated back and forth inside the first flow tube and the second flow tube, thereby turning harm into benefit of energy and avoiding pollution and waste of energy.

[0023] 4. The present invention, through the coordination of components such as the telescopic portion and the movable plate, adjusts the coolant flow rate within the first and second flow tubes according to different usage scenarios during the movement and charging of the charging cable, effectively adjusting the tension of the charging cable itself. While satisfying the operator's convenient and efficient movement of the charging cable, it can also ensure the stability of the charging cable and prevent the forces of the external environment from affecting the normal insertion and charging of the charging cable.

[0024] 5. The present invention provides the mutual cooperation of components such as the drain hole and the side discharge hole. When a short circuit occurs in the wire core and a fire occurs, the coolant flows efficiently along the second flow tube to be discharged at a fixed point to extinguish the fire, effectively avoiding the fire 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the cable of the present invention; Figure 2 This is a schematic diagram of the rear-view stereoscopic structure of the cable of the present invention; Figure 3 This is a schematic diagram of the internal three-dimensional structure of the cable of the present invention; Figure 4 for Figure 3 A in the middle is an enlarged schematic diagram; Figure 5 This is a schematic diagram of the internal three-dimensional structure of the cable of the present invention from the left side; Figure 6 for Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 This is a schematic diagram of the internal three-dimensional structure of the cable of the present invention as viewed from above; Figure 8 for Figure 7 The enlarged schematic diagram of point C in the middle; Figure 9 This is a schematic diagram of the internal explosion three-dimensional structure of the fixing ring of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the charging pile of the present invention; Figure 11 This is a schematic diagram of the internal three-dimensional structure of the charging pile of the present invention when viewed from the front.

[0026] In the figure: 1. Wire core; 2. Insulation layer; 3. Filling layer; 4. Protective sleeve; 5. Fixing ring; 6. Axial hole; 7. Mounting hole; 8. Active cavity; 9. Connecting hole; 10. Fixing block; 11. Flow hole; 12. Slide plate; 13. Docking hole; 14. Moving plate; 15. Telescopic part; 16. Elastic part; 17. Drain hole; 18. Side discharge hole; 19. Transfer cavity; 20. Matching hole; 21. First flow tube; 22. Second flow tube; 23. End cap ; 24. Blocking cover; 25. Lower through hole; 26. Insulating sleeve; 27. Inner ring; 28. Receiving hole; 29. Blocking block; 30. Radiator; 31. Operation button; 32. Inner cavity; 33. Connecting frame; 34. Storage cavity; 35. Partition; 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. Bottom box. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] A wear-resistant and insulated charging cable comprises a plurality of cores 1, which are used to transmit electricity. A plurality of fixing rings 5 are evenly arranged on the outer surfaces of the plurality of cores 1. The plurality of fixing rings 5 are evenly arranged to divide a longer cable into multiple parts, and accurately adjust the heat dissipation and support effects of the cores 1 at different positions according to actual conditions. An insulating layer 2 is provided on the outer surface of the core 1. The insulating layer 2 is made of polyvinyl chloride material. The insulating layer 2 wraps and protects the internal core 1, further improving the stability and efficiency of the core 1 in power transmission. A protective cover 4 is provided on the outer surface of the plurality of fixing rings 5. The protective cover 4 is made of polyvinyl chloride material. The protective cover 4 serves as the outermost protective structure and has functions such as wear resistance and insulation. A plurality of filling layers 3 are evenly arranged between the protective cover 4 and the insulating layer 2. The filling layer 3 is made of fiber material. The setting of the filling layer 3 ensures the supporting and protective effect of the protective cover 4 on the internal core 1.

[0029] A transfer cavity 19 is provided inside the fixed ring 5, and coolant flows inside the transfer cavity 19, further realizing fixed-point heat dissipation support for the wire core 1. The internal seal of the transfer cavity 19 is movably connected with an inner ring 27, and the inner ring 27 changes accordingly with the flow direction of the coolant, thereby realizing effective utilization of energy, turning harm into benefit, and avoiding waste.

[0030] A first flow tube 21 is provided through the axis of multiple fixing rings 5, and multiple second flow tubes 22 are provided through the interior of multiple fixing rings 5. Cooling liquid continuously circulates inside the first flow tube 21 and the second flow tube 22, which not only realizes the vertex heat exchange of the wire core 1, but also can adjust the supporting performance of the wire core 1 at different positions, thereby improving the support and stability of charging of new energy vehicles.

[0031] A plurality of mounting holes 7 are evenly provided inside the fixing ring 5 and the inner ring 27. An insulating sleeve 26 is provided on the inner wall of the mounting hole 7. The mounting hole 7 supports and fixes the internal insulating sleeve 26. The inner wall of the insulating sleeve 26 is sealed and connected to the outer surface of the insulating layer 2, thereby further improving the installation efficiency of the subsequent insulating layer 2 and the wire core 1 inside the insulating sleeve 26. The outer surface of the insulating sleeve 26 is connected to the interior of the transfer cavity 19, and the coolant inside the transfer cavity 19 flows on the outer surface of the insulating sleeve 26 to ensure the heat exchange efficiency of the internal wire core 1.

[0032] An axial hole 6 is opened at the axis center of the fixing ring 5, and the inner wall of the axial hole 6 is sealed and connected to the outer surface of the first flow tube 21. The axial hole 6 installs and fixes the first flow tube 21. A plurality of matching holes 20 are evenly opened on both sides of the transfer chamber 19. Both sides of the second flow tube 22 are connected to the two facing matching holes 20. The matching holes 20 install and fix the second flow tube 22.

[0033] Active cavities 8 are evenly opened inside the inner ring 27, and the active cavities 8 are distributed circumferentially. A leakage hole 17 is connected to one side of the active cavity 8 near the axis. The setting of the leakage hole 17 allows the coolant to directly enter the active cavity 8 and be quickly discharged along the leakage hole 17 to extinguish the fire when the temperature of the wire core 1 is too high, thereby avoiding the wire core 1 from overheating and causing major safety accidents such as fire.

[0034] Two connecting holes 9 are symmetrically provided inside the active cavity 8. The connecting holes 9 are connected to the transfer cavity 19, and the connecting holes 9 correspond to the matching holes 20. Then, the coolant inside the second flow tube 22 can enter the connecting hole 9 along the matching holes 20 for circulation. Two fixed blocks 10 are symmetrically provided inside the connecting hole 9. The position of the fixed blocks 10 remains unchanged. A slide 12 is sealed and slidably connected between the two fixed blocks 10. The slide 12 moves between the two fixed blocks 10 to adjust the flow rate of the coolant. A plurality of flow holes 11 are evenly provided inside the fixed blocks 10, and a plurality of docking holes 13 are evenly provided inside the slide 12. The flow holes 11 and the docking holes 13 are staggered, that is, the larger the overlapping area of the flow holes 11 and the docking holes 13, the greater the amount of coolant transmitted backward by the second flow tube 22, and the greater the heat exchange efficiency between the coolant and the wire core 1 at this position, thereby realizing fixed-point heat exchange of the wire core 1 at different positions and ensuring the constant temperature of the wire core 1.

[0035] A movable plate 14 is provided on one side of the skateboard 12. When the movable plate 14 moves, it synchronously drives the skateboard 12 to move between the two fixed blocks 10. The side wall of the movable plate 14 is symmetrically provided with two telescopic parts 15. The telescopic part 15 can be a corrugated sleeve structure. 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 interior 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 skateboard 12 to move between the two fixed blocks 10. An elastic part 16 is provided inside the telescopic part 15. 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, thereby ensuring the stability and accuracy of the movement of the skateboard 12 between the fixed blocks 10.

[0036] End covers 23 are provided inside the multiple matching holes 20 located at the two side ends and facing each other. The end covers 23 block the matching holes 20 located at the ends to prevent the matching holes 20 at the ends from not being connected to the second flow tubes 22 and causing the discharge of coolant. A blocking cover 24 is provided inside the axial hole 6 located on one side of the end. The end of the first flow tube 21 is connected to the transfer cavity 19 located at the end. After the coolant inside the first flow tube 21 reaches the end, it flows back to the transfer cavity 19 under the blocking action of the blocking cover 24, and finally enters the matching hole 20 along the multiple flow holes 11 and the docking hole 13, thereby realizing the flow inside the subsequent multiple second flow tubes 22 and accurately adjusting the cooling of the wire core 1.

[0037] A plurality of blocking blocks 29 are evenly provided on one side of the end cover 23 close to the connecting hole 9. The plurality of blocking blocks 29 are staggered with the fixing block 10. The plurality of blocking blocks 29 block the inner ring 27 to prevent the inner ring 27 at the two side ends from adhering to the inner wall of the transfer cavity 19 under the push of the coolant and affecting the normal flow and cooling of the coolant.

[0038] The bottom of the transfer chamber 19 at the end is connected with a lower through hole 25. The coolant inside the transfer chamber 19 at the end can flow directly along the lower through hole 25, thereby realizing the reciprocating use of the coolant, improving the fluidity of the coolant, and realizing the transformation of energy from harm to benefit. A plurality of receiving holes 28 are evenly opened inside the fixed ring 5. The position of the receiving hole 28 remains unchanged. The width of the receiving hole 28 is smaller than the width of the leakage hole 17. The multiple receiving holes 28 are all matched with the side of the leakage hole 17 away from the active chamber 8 on the back side. Therefore, when the inner ring 27 moves inside the transfer chamber 19, the leakage hole 17 is always in contact with the receiving hole 28. The receiving hole 28 is connected to the side discharge hole 18 on the side away from the leakage hole 17. Both sides of the side discharge hole 18 pass through the fixing ring 5 and are connected to the inside of the filling layer 3. When the coolant in the active cavity 8 is discharged downward along the leakage hole 17, the coolant in the leakage hole 17 enters the side discharge hole 18 through the receiving hole 28. The coolant in the side discharge hole 18 continuously flows to both sides and enters the filling layer 3, further realizing rapid flushing and cooling of the wire core 1, avoiding the wire core 1 from being too hot at this position and causing fire, etc., which endangers the surrounding charging piles or vehicles, thereby improving the safety and stability of actual use.

[0039] The specific application of the wear-resistant insulated charging cable in the charging pile is as follows: the charging pile includes a cabinet 43, a bottom box 46 is provided at the bottom of the cabinet 43, and an inner cavity 32 is opened inside the cabinet 43. The inner cavity 32 is mainly used to store various electrical equipment. A plurality of connecting frames 33 are evenly provided on the inner wall of the inner cavity 32, and a plurality of distribution cabinets 38 are evenly provided 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 provided 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 provided with a gun head 42. The through-hole 41 fixes and protects the cable, and the electricity inside the distribution cabinet 38 reaches the gun head 42 along the wire core 1, and enters the new energy vehicle along the gun head 42 for charging.

[0040] A control panel 44 is provided on one side of the cabinet 43, and multiple operation buttons 31 are evenly provided on both sides of the control panel 44. The control panel 44 electrically controls various electrical components. Multiple radiators 30 are evenly provided on the other side of the cabinet 43. The setting of the radiator 30 improves the heat dissipation effect inside the inner cavity 32. Multiple hooks 45 are evenly provided on both sides of the cabinet 43. The hooks 45 match the wire core 1. The setting of the hooks 45 improves the hanging and supporting effect of the cable.

[0041] Two condensers 36 are symmetrically provided on the inner wall of the inner cavity 32. The condenser 36 cools the coolant. A circulating pump 37 is provided at the bottom output end of the condenser 36. A top pipe 39 is provided at the bottom output end of the circulating pump 37. The bottom output end of the top pipe 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 pipe 39 does not hinder the normal operation of the multiple cores 1. The circulating pump 37 is started in the forward direction and the low-temperature coolant inside the condenser 36 is passed into the first flow tube 21 along the top pipe 39 and circulates, and flows back along the first flow tube 21 to the multiple second flow tubes 22, further improving the top cooling effect of the core 1.

[0042] A storage chamber 34 is provided inside the bottom box 46. The storage chamber 34 is used to store high-temperature coolant after heat exchange in the wire core 1. A partition 35 is provided at the axis center inside the storage chamber 34. The setting of the partition 35 divides the storage chamber 34 into two spaces, and the two spaces are matched with corresponding circulation pumps 37 respectively, thereby realizing separate control and adjustment of the two charging cables. Two bottom pipes 40 are symmetrically provided inside the storage chamber 34. The top of the bottom pipe 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 world is in a low-temperature environment, the circulation pump 37 applies a suction force to the storage chamber 34 when it is started in reverse. The high-temperature coolant inside the storage chamber 34 enters the second flow tube 22 along the bottom pipe 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 a low-temperature environment while flowing, thereby improving the subsequent power-on efficiency of the wire core 1 in a low-temperature environment.

[0043] When the above-mentioned wear-resistant insulated new energy vehicle cable is actually used, if the outside temperature is too high at noon, the internal temperature of the charging cable will rise accordingly during charging and there will be a safety risk. If the outside temperature is too low at night, the charging cable needs to be preheated during the charging process and the heating efficiency needs to be improved. The existing technology lacks the function of adaptively adjusting the charging temperature of the charging cable, which ultimately reduces the charging efficiency and charging effect. At the same time, when the temperature of the charging cable is adjusted and heat is exchanged with the help of coolant, energy loss is easily caused, thereby reducing the energy utilization rate and recycling effect. When the charging cable is bent or subjected to external pressure during the charging process, how can the charging cable be adjusted in time? The self-supporting force will not only damage the structure of the charging cable, but also the internal temperature of the charging cable will change accordingly and affect the charging efficiency; and during the charging and plugging and unplugging process of the charging cable, the charging cable itself needs to have different flexibility. For example, when the charging cable is plugging and unplugging, it needs to be more flexible, which is convenient for the operator to move and plug and unplug the charging cable, while the charging cable needs to be less flexible during the charging process, thereby avoiding the external environment from affecting the normal operation of the charging cable; at the same time, when the temperature of the charging cable is too high and there is a fire risk, if there is a lack of fixed-point rapid cooling and fire extinguishing function inside the charging cable, it is easy to cause the charging pile and the new energy vehicle to catch fire simultaneously, thereby causing major safety and economic losses.

[0044] In order to solve the above problems, when the wear-resistant insulated charging cable is actually used, the various components are 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 uses the control panel 44 to control the start of the charging pile. The electricity inside the distribution cabinet 38 flows along the core 1 through the gun head 42 into the new energy vehicle for charging.

[0045] In the high temperature environment at noon, the control panel 44 controls the condenser 36 to start, and at the same time the circulating pump 37 starts forward and passes the low-temperature coolant into the first flow tube 21 along the top pipe 39. The low-temperature coolant inside the first flow tube 21 continuously flows toward the gun head 42 end and quickly cools the wire core 1. At the same time, when the low-temperature coolant inside the first flow tube 21 reaches the gun head 42 end, it enters the transfer chamber 19 under the blocking action of the blocking cover 24. At this time, the low-temperature coolant reaches the matching hole 20 end 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 and continues to flow backward to realize the top cooling of the wire core 1. At the same time, the low-temperature coolant passes through multiple second flow tubes 22 and 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.

[0046] At the same time, when the low-temperature coolant flows inside the transfer chamber 19, it will push the inner ring 27 to move along the flow direction inside the transfer chamber 19, and the matching hole 20 corresponds to the second flow tube 22, thereby ensuring that the low-temperature coolant after passing through the flow hole 11 and the docking hole 13 directly enters the subsequent second flow tube 22 for flow cooling, and the low-temperature coolant and the wire core 1 undergo rapid heat exchange, thereby ensuring that the working temperature of the wire core 1 is always in a stable state. At the same time, the temperature of the low-temperature coolant rises after the heat exchange and is temporarily stored inside the storage chamber 34, thereby not only ensuring that it can be used quickly and efficiently when the wire core 1 is preheated later, but also the high-temperature coolant inside the storage chamber 34 can also dry the bottom of the bottom box 46, avoiding the charging pile in the wild environment in a humid state. The environment reaches the inner cavity 32 along the bottom box 46 upward and causes corrosion damage to the distribution cabinet 38, effectively realizing the repeated and efficient utilization of energy, and turning heat into benefit and repeated recycling, ensuring that the required energy is efficient and low-loss.

[0047] At the same time, at noon, when the amount of high temperature applied to a certain wire core 1 by the external high temperature increases or the wire core 1 itself is damaged during the charging process, the temperature of the wire core 1 at the corresponding position increases, and the temperature of the thermal expansion material inside the telescopic part 15 increases and the volume increases. The telescopic part 15 drives the movable plate 14 to move away from the fixed block 10 end, and the movable plate 14 simultaneously drives the slide plate 12 to move between the two fixed blocks 10. The slide plate 12 drives the multiple docking holes 13 to move, and 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 cavity 19 into the second flow tube 22 along the docking holes 13 and the flow holes 11 increases, and then the heat exchange efficiency of the low-temperature coolant inside the second flow tube 22 on the wire core 1 at this position is enhanced, further improving the cooling effect of the wire core 1 at this position, ensuring that the working temperature of the wire core 1 remains stable at all times, and correspondingly improving the stability and efficiency of charging.

[0048] At the same time, when the outside temperature drops at night, the thermal expansion material inside the telescopic part 15 decreases in volume under the principle of thermal expansion and contraction, and the telescopic part 15 drives the movable plate 14 to move closer to the end of the fixed block 10, and the movable plate 14 simultaneously drives the slide plate 12 to move between the two fixed blocks 10. Since the number of the docking holes 13 inside the slide plate 12 is greater than the flow holes 11 inside the fixed block 10, the docking holes 13 and the 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, and the circulating pump 37 starts in reverse and applies suction to the bottom pipe 40, storing The high-temperature coolant inside the cavity 34 flows upward along the bottom tube 40 and the lower through hole 25 to the interior of the transfer cavity 19. At this time, under the push of the high-temperature coolant, the inner ring 27 moves in the other direction inside the transfer cavity 19. The high-temperature coolant enters the second flow tube 22 through the overlapping position of the flow hole 11 and the docking hole 13, and reaches the interior of the transfer cavity 19 at the end through multiple second flow tubes 22 and continues to flow back to the interior of the first flow tube 21. After passing through the first flow tube 21, it flows back along the top tube 39 to the interior of the condenser 36 to wait for subsequent condensation, thereby realizing the recycling of the coolant and ensuring continuous, stable and efficient heat exchange of the coolant.

[0049] At the same time, the high-temperature coolant exchanges heat with the wire core 1 when passing through the first flow tube 21 and the second flow tube 22 and correspondingly increases the temperature of the wire core 1, thereby realizing preheating of the wire core 1 and avoiding direct passage of electricity into the wire core 1 and causing loss. When the temperature of the wire core 1 at a certain position continues to decrease, the thermal expansion material inside the telescopic part 15 continues to decrease in volume under the action of thermal expansion and contraction, and the telescopic part 15 drives the movable plate 14 to move toward the end close to the fixed block 10. The movable plate 14 simultaneously drives the slide plate 12 to move between the two fixed blocks 10, and the overlapping area of the flow hole 11 and the docking hole 13 increases. The flow rate of the high-temperature coolant inside the transfer cavity 19 into the second flow tube 22 along the flow hole 11 and the docking hole 13 increases, and the heat exchange efficiency of the high-temperature coolant on the wire core 1 is improved, further realizing the preheating efficiency of the wire core 1, ensuring that the temperature of the wire core 1 is always kept in the optimal state, thereby improving the power-on stability and efficiency of the wire core 1.

[0050] When the charging cable is bent more or squeezed, the on-resistance of the wire core 1 inside the charging cable increases, and the temperature at the corresponding position rises. As can be seen from the above, the volume of the thermally expandable material inside the telescopic part 15 increases due to its own thermal expansion and contraction. The telescopic part 15 drives the movable 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 slide 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 position, but also increases the tension of the inner wall of the second flow tube 22 by its own impact force during flow. The second flow tube 22 correspondingly increases the tension on the protective cover 4. Under this force, the protective cover 4 continuously reverses and recovers to a straight state, thereby ensuring that the protective cover 4 and the internal wire core 1 are in a non-bent state, thereby improving the conductive stability and conductive flow of the wire core 1.

[0051] Similarly, when the charging cable is in the plug-in or unplug state, if the flexibility of the charging cable is too low, the operator cannot hold the gun head 42 and drive the charging cable to twist and move. At this time, since 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 twist the charging cable and perform the required plug-in and unplugging procedures with the new energy vehicle charging port.

[0052] When the plugging and unplugging is completed and charging is in progress, the circulating pump 37 is started and coolant flows 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 cover 4 through the filling layer 3, which correspondingly increases the tension of the charging cable itself, effectively improves the resistance and support effect of the charging cable to external forces, and effectively avoids the occurrence of problems such as the charging cable pulling the gun head 42 out of the charging port of the new energy vehicle, thereby ensuring the continuity and stability of charging.

[0053] When a short circuit or other problems occur in the wire core 1, causing the temperature at the telescopic part 15 to continue to rise and reach the maximum value and a fire occurs, the control panel 44 first controls the distribution cabinet 38 to cut off the power, and the wire core 1 is no longer energized. At the same time, the thermal expansion material inside the telescopic part 15 continues to increase in volume and reaches the maximum value under the principle of thermal expansion and contraction. The telescopic part 15 drives the movable plate 14 to move to the maximum distance away from the fixed block 10 end. The movable plate 14 simultaneously drives the slide plate 12 to move to the maximum distance between the two fixed blocks 10. The slide plate 12 moves away from the end of the movable plate 14 to between the two fixed blocks 10, and the coolant inside the first flow tube 21 and the second flow tube 22 is not The low-temperature coolant in the transfer chamber 19 continuously enters the transfer chamber 19 at the fire position along the flow hole 11 and continuously enters between the two fixed blocks 10 in the active chamber 8, and continues to reach the drain hole 17 along the active chamber 8. At this time, the low-temperature coolant continues to enter the side discharge hole 18 through the receiving hole 28, and flows to both sides along the side discharge hole 18 to the inside of the filling layer 3. The low-temperature coolant can quickly and efficiently flush and extinguish the fire end of the wire core 1 in the filling layer 3, thereby preventing the fire from spreading along the wire core 1 to the charging pile or the new energy vehicle end and causing major economic and safety accidents, thereby effectively cutting off the fire at the source and improving safety protection needs.

[0054] At the same time, after the power is cut off and the fire is extinguished, the damaged charging cable is cut off and a new charging cable is reconnected. Then, the new energy vehicle is charged with the wear-resistant insulated charging cable according to the above process.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant insulated charging cable, characterized in that: It comprises a plurality of wire cores, wherein a plurality of fixing rings are evenly arranged on the outer surfaces of the plurality of wire cores, a transfer cavity is opened inside the fixing ring, and the interior of the transfer cavity is sealed and movably connected to the inner ring; A first flow tube is provided through the axis of each of the plurality of fixing rings, and a second flow tube is provided through the interior of each of the plurality of fixing rings. The inner ring is evenly provided with movable cavities, the movable cavities are symmetrically provided with two communicating holes, the communicating holes are symmetrically provided with two fixed blocks, a slide is sealed and slidably connected between the two fixed blocks, a movable plate is provided on one side of the slide, and two telescopic parts are symmetrically provided on the side wall of the movable plate.

2. The wear-resistant insulated charging cable according to claim 1, characterized in that: An axial hole is opened at the axis center of the fixing ring, the inner wall of the axial hole is sealed with the outer surface of the first flow tube, multiple matching holes are evenly opened on both sides of the transfer cavity, and both sides of the second flow tube are connected to the two facing matching holes.

3. The wear-resistant insulated charging cable according to claim 1, characterized in that: A plurality of flow holes are evenly opened inside the fixed block, and a plurality of docking holes are evenly opened inside the slide plate. The flow holes and docking holes are staggered. One end of the telescopic part away from the movable plate is fixedly connected to the side wall of the fixed block, and an elastic part is provided inside the telescopic part.

4. The wear-resistant insulated charging cable according to claim 2, characterized in that: The communicating hole is connected with the transfer cavity, and end covers are provided inside the multiple matching holes located at both ends and facing each other, and a blocking cover is provided inside the axial hole located at one end side.

5. The wear-resistant insulated charging cable according to claim 4, characterized in that: The end of the first flow tube is communicated with the transfer cavity located at the end, and a plurality of blocking blocks are evenly arranged on one side of the end cover close to the communicating hole, and the plurality of blocking blocks are staggered with the fixing blocks.

6. The wear-resistant insulated charging cable according to claim 1, characterized in that: One side of the movable cavity is connected to a leakage hole near the axis, and a plurality of receiving holes are evenly opened inside the fixing ring. The width of the receiving holes is smaller than the width of the leakage hole.

7. The wear-resistant insulated charging cable according to claim 6, characterized in that: The sides of the receiving holes facing away from each other are matched with the side of the leakage hole away from the active cavity. The side of the receiving hole away from the leakage hole is connected with a side row hole, and the bottom of the transfer cavity at the end is connected with a lower through hole.

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

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