New energy automobile charging cable with heat dissipation performance

Abstract

The invention relates to the technical field of new energy automobile charging cables, and discloses a new energy automobile charging cable with heat dissipation performance, the automobile charging cable is composed of a cable body and a plurality of heat dissipation pieces, and the plurality of heat dissipation pieces are distributed in a linear array along the length direction of the cable body; wherein each heat dissipation piece comprises a cooling pipe, a trigger pipe and a sleeve, the cooling pipe and the trigger pipe are both arranged on the cable body in a sleeving mode, the sleeve is also arranged on the cable body in a sleeving mode, the cooling pipe and the trigger pipe are both arranged in the sleeve, and trigger media are accumulated in the trigger pipe. According to the designed heat dissipation piece, the continuous cooling effect of the cooling pipe and the cooling liquid in the cooling pipe on the cable body is guaranteed, the heat dissipation efficiency is improved through an automatic circulation mechanism, and therefore the heat dissipation performance and stable operation of the cable body are effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging cables, and in particular to a new energy vehicle charging cable with heat dissipation performance. Background Art

[0002] New energy vehicle charging cables are generally multi-core integrated cables, including power cores and signal control cores. The power cores are usually composed of multiple strands of soft copper wire twisted conductors, covered with a rubber insulation layer, and may be wrapped with Teflon tape to increase insulation performance. The signal control core is used for signal transmission and control, and may include structures such as tinned copper braided layers to improve signal transmission stability and anti-interference capabilities. The outside of the cable may also include a waterproof resin coating, a shielding wrapping layer and a rubber outer sheath to enhance the cable's waterproof, anti-electromagnetic interference, wear resistance and other properties.

[0003] After searching, the Chinese patent with publication number CN110033893A discloses a composite cable, including a cable outer layer, the inner part of the cable outer layer has a cable cavity, an inner core wire is suspended in the middle of the cable cavity, the inner core wire includes more than one core wire and an inner protective layer wrapped around the outside of each core wire, two metal sheet layers are symmetrically arranged in the cable outer layer, the metal sheet layers extend along the length direction of the cable outer layer, more than one protective rod is vertically arranged on the inner side of the metal sheet layer, the protective rods between the upper and lower metal sheet layers are staggered, and each protective rod has an active cavity. The composite cable proposed in the above scheme adopts a suspended setting mode, which can be effectively used in active dragging occasions, has very good shear resistance and heat dissipation performance, and can well protect the internal core wire. However, the above scheme still has the following shortcomings when it is actually used:

[0004] The cable proposed in the above scheme does not have the function of heat dissipation. First, the cable will generate a certain amount of heat during the charging process. If there is no effective heat dissipation mechanism, the heat will accumulate inside the cable, causing the cable temperature to rise. High temperature will accelerate the aging process of the internal materials of the cable, including the conductor, insulation layer and sheath, thereby reducing the service life of the cable. Long-term high-temperature operation may also cause the mechanical properties of the cable to deteriorate and increase the risk of cable breakage or damage. Secondly, the increase in cable temperature may also affect the charging efficiency. Under high temperature conditions, the resistance of the cable will increase, resulting in increased losses during the transmission of electric energy, thereby reducing the charging efficiency. This will not only prolong the charging time, but may also increase the charging cost because more electric energy is required to complete the charging process. In addition, high temperature may also cause safety problems. If the cable temperature is too high, it may trigger the overheating protection mechanism, resulting in charging interruption or charging pile shutdown. In extreme cases, high temperature may also cause the cable to catch fire or explode, posing a serious threat to personnel and property.

[0005] Therefore, it is necessary to design a new energy vehicle charging cable with heat dissipation performance to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a new energy vehicle charging cable with heat dissipation performance.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A new energy vehicle charging cable with heat dissipation performance, the vehicle charging cable is composed of a cable body and a plurality of heat dissipation components, wherein the plurality of heat dissipation components are distributed in a linear array along the length direction of the cable body;

[0009] Each of the heat sinks includes a cooling tube, a trigger tube and a sleeve. The cooling tube and the trigger tube are sleeved on the cable body. The sleeve is also sleeved on the cable body. The cooling tube and the trigger tube are placed inside the sleeve. The trigger tube has a trigger medium stored inside.

[0010] Wherein, each sleeve is provided with a pumping structure and a cooling structure.

[0011] As a preferred technical solution of the present invention, the pumping structure includes:

[0012] A sealing box, fixed on the outer peripheral surface of the sleeve;

[0013] A sliding plug, sealingly and slidingly connected inside the sealing box;

[0014] A connecting tube, one end of which is connected to the sealing box, and the other end of which is connected to the trigger tube;

[0015] A spring, one end of which is connected to the inner surface of the sealing box, and the other end of which is connected to the sliding plug;

[0016] Two installation tubes, one end of each of which is connected to the sealing box, and one end of one of the installation tubes away from the sealing box is connected to the cooling tube;

[0017] Two one-way valves are respectively installed on the two installation pipes.

[0018] As a preferred technical solution of the present invention, the flow limiting directions of the two one-way valves are opposite.

[0019] As a preferred technical solution of the present invention, the cooling structure includes:

[0020] A cooling box is fixed on the outer peripheral surface of the sleeve, and a cooling liquid is stored in the cooling box. The cooling box is connected to the other end of the cooling pipe through a connecting pipe.

[0021] An assembly port is provided on a side of the cooling box;

[0022] A semiconductor refrigeration sheet is installed in the assembly opening, and a heat-conducting surface of the semiconductor refrigeration sheet faces the outside of the cooling box.

[0023] As a preferred technical solution of the present invention, each of the sleeves is provided with an inflation structure and a limiting structure, and both ends of each of the sleeves are provided with a clamping structure;

[0024] The inflatable structure comprises:

[0025] A fixing ring, a fixing sleeve is arranged at the end of the sleeve;

[0026] A sliding ring, which is slidably mounted on the sleeve;

[0027] Two air bags are both arranged between the fixed ring and the sliding ring.

[0028] As a preferred technical solution of the present invention, the limiting structure includes:

[0029] A fixing plate fixed on a side of the cooling box;

[0030] A slideway, provided on the fixed plate;

[0031] A slide rod is fixed on the slide ring, and one end of the slide rod away from the slide ring extends into the slideway;

[0032] An end cap is fixed to an end of the sliding rod away from the sliding ring;

[0033] A tension spring has one end connected to the sleeve and the other end connected to the slide bar.

[0034] As a preferred technical solution of the present invention, the pressing structure includes:

[0035] A plurality of connection capsules are fixed on the inner surface of the sleeve, the plurality of connection capsules are distributed in a circumferential array around the axis of the sleeve, and each of the connection capsules is connected to one of the airbags;

[0036] A plurality of pressing blocks are respectively fixed on a plurality of the connecting capsules.

[0037] As a preferred technical solution of the present invention, the surface of each of the pressing blocks is provided with anti-slip grooves.

[0038] As a preferred technical solution of the present invention, there is a gap between the cable body and the sleeve.

[0039] As a preferred technical solution of the present invention, the slide includes a first opening, a second opening and a third opening, the first opening and the third opening are connected through the second opening, the first opening and the third opening are parallel to each other, and the first opening and the second opening are perpendicular to each other.

[0040] The present invention has the following beneficial effects:

[0041] 1. This design realizes the circulation of coolant between the cooling tube, cooling box and sealing box through the reciprocating movement of two one-way valves with opposite flow limiting directions and the sliding plug. When the surface temperature of the cable body rises, the gaseous trigger medium pushes the sliding plug to push the coolant into the cooling tube for cooling; when the surface temperature of the cable body drops, the trigger medium liquefies, and the sliding plug resets under the action of the spring and extracts the coolant in the cooling tube. In this process, the coolant circulates continuously, and when passing through the cooling box, the semiconductor refrigeration plate can further reduce its temperature, ensuring that the cooling tube is always filled with low-temperature coolant. This design not only ensures the continuous cooling effect of the cooling tube and its internal coolant on the cable body, but also improves the heat dissipation efficiency through the automatic circulation mechanism, thereby effectively ensuring the heat dissipation performance and stable operation of the cable body;

[0042] 2. The clamping structure at both ends of the sleeve squeezes the airbag through the sliding ring, so that the connecting bag is inflated and expands, and drives the clamping block to clamp the cable body, so as to achieve the rapid fixation of the sleeve. This design not only simplifies the installation process and reduces the difficulty of operation for the staff, but also improves the installation efficiency, so that the sleeve can be quickly and firmly fixed on the cable body, which is convenient for subsequent maintenance and disassembly;

[0043] 3. The gap formed between the sleeve and the cable body serves as an airflow channel, allowing airflow to flow freely between the cable body and the sleeve. This design makes full use of the principle of natural convection heat dissipation, effectively enhances the heat dissipation on the surface of the cable body, and reduces the temperature of the cable, thereby ensuring the heat dissipation performance of the cable body and long-term stable operation;

[0044] 4. This design realizes the precise control and fixation of the position of the sliding ring by moving and rotating the sliding rod on the sliding ring between the first opening, the second opening and the third opening. During the clamping process, the movement path of the sliding rod is precisely planned to ensure that the sliding ring can be stably stuck after reaching a specific position, thereby ensuring the continuous and uniform clamping effect of several clamping blocks on the cable body. This design not only improves the reliability of clamping, but also avoids damage to the cable body caused by uneven clamping. At the same time, when the sleeve needs to be removed, the staff only needs to push and rotate the sliding ring in the opposite order of operation to easily slide the sliding rod back into the first opening, thereby realizing the quick disassembly and assembly of the sleeve. This design not only simplifies the disassembly and assembly process and reduces the difficulty of operation, but also improves work efficiency, making the maintenance and replacement of the sleeve more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the structure of a new energy vehicle charging cable with heat dissipation performance proposed by the present invention;

[0046] Figure 2 It is a schematic diagram of the structure of the cable body, cooling tube and trigger tube;

[0047] Figure 3 is a schematic diagram of the structure of the sleeve;

[0048] Figure 4 It is a structural schematic diagram of the sleeve and the cooling structure;

[0049] Figure 5 It is a structural schematic diagram of the pumping structure;

[0050] Figure 6 is a structural schematic diagram of the compression structure;

[0051] Figure 7 It is a schematic diagram of the cross-sectional structure of the cooling box;

[0052] Figure 8 for Figure 4 A magnified view of the structure at A.

[0053] In the figure: 1. cable body; 2. cooling tube; 3. trigger tube; 4. sleeve; 51. sealing box; 52. sliding plug; 53. connecting tube; 54. spring; 55. mounting tube; 56. one-way valve; 61. cooling box; 62. assembly port; 63. semiconductor cooling plate; 71. fixing ring; 72. sliding ring; 73. air bag; 81. connecting bag; 82. clamping block; 91. fixing plate; 92. slideway; 93. sliding rod; 94. end cap; 95. tension spring. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0055] Reference Figure 1-8 A new energy vehicle charging cable with heat dissipation performance, the vehicle charging cable is composed of a cable body 1 and a plurality of heat dissipation components, the plurality of heat dissipation components are distributed in a linear array along the length direction of the cable body 1; wherein each heat dissipation component includes a cooling tube 2, a trigger tube 3 and a sleeve 4, the cooling tube 2 and the trigger tube 3 are both sleeved on the cable body 1, the sleeve 4 is also sleeved on the cable body 1, there is a gap between the cable body 1 and the sleeve 4, the cooling tube 2 and the trigger tube 3 are both placed inside the sleeve 4, and a trigger medium is accumulated inside the trigger tube 3.

[0056] Each sleeve 4 is provided with a pumping structure and a cooling structure, and the pumping structure includes: a sealing box 51 fixed on the outer peripheral surface of the sleeve 4; a sliding plug 52, sealingly and slidingly connected inside the sealing box 51; a connecting pipe 53, one end of which is connected to the sealing box 51, and the other end is connected to the trigger tube 3; a spring 54, one end of which is connected to the inner surface of the sealing box 51, and the other end is connected to the sliding plug 52; two mounting pipes 55, one end of which is connected to the sealing box 51, and one end of one mounting pipe 55 away from the sealing box 51 is connected to the cooling pipe 2; two one-way valves 56, which are respectively installed on the two mounting pipes 55, and the flow limiting directions of the two one-way valves 56 are opposite. When the temperature inside the trigger tube 3 reaches the boiling point of the trigger medium, the trigger medium will evaporate and vaporize. For the same mass of substances, the volume in the gaseous state is usually larger than the volume in the liquid state. This is because the distance between the molecules of the substance in the gaseous state is much larger than the distance between the molecules in the liquid state. In the liquid state, the interaction between molecules is strong, and the molecules are arranged relatively tightly, so the space occupied is small, and the volume is relatively small. In the gaseous state, the interaction between molecules is weak, and the molecules can move freely and occupy a larger space, resulting in an increase in volume. Therefore, for the same mass of a substance, the volume in the gaseous state will be larger than the volume in the liquid state. Therefore, when the trigger medium evaporates, the gaseous trigger medium will be filled into the interior of the sealing box 51 through the connecting pipe 53 and push the sliding plug 52 to move.

[0057] The cooling structure includes: a cooling box 61 fixed on the outer peripheral surface of the sleeve 4, the cooling box 61 has a cooling liquid stored inside, and the cooling box 61 is connected to the other end of the cooling tube 2 through a connecting tube; an assembly port 62 opened on the side of the cooling box 61; a semiconductor cooling sheet 63 installed in the assembly port 62, and the heat conducting surface of the semiconductor cooling sheet 63 faces the outside of the cooling box 61. When the cooling liquid passes through the cooling box 61, the semiconductor cooling sheet 63 installed on the cooling box 61 can cool the cooling liquid, so that the inside of the cooling tube 2 can always be filled with low-temperature cooling liquid. This design can ensure that the cooling tube 2 and the cooling liquid inside it have a cooling effect on the cable body 1. For the semiconductor cooling sheet 63, it is installed in the assembly port 62, and the heat conducting surface of the semiconductor cooling sheet 63 faces the outside of the sealing box 51, so that the semiconductor cooling sheet 63 can normally dissipate heat during the power-on process.

[0058] Each sleeve 4 is provided with an inflation structure and a limiting structure, and both ends of each sleeve 4 are provided with a clamping structure; the inflation structure includes: a fixed ring 71, which is fixedly sleeved at the end position of the sleeve 4; a sliding ring 72, which is slidably sleeved on the sleeve 4; two air bags 73, which are both arranged between the fixed ring 71 and the sliding ring 72, and the limiting structure includes: a fixed plate 91, which is fixed to the side of the cooling box 61; a slide 92, which is opened on the fixed plate 91, and the slide 92 includes a first opening, a second opening and a third opening, the first opening and the third opening are connected through the second opening, the first opening and the third opening are parallel to each other, and the first opening and the second opening are perpendicular to each other; a sliding rod 93, which is fixed on the sliding ring 72, and the end of the sliding rod 93 away from the sliding ring 72 extends into the slide 92; an end cap 94, which is fixed on the end of the sliding rod 93 away from the sliding ring 72; a tension spring 95, one end of which is connected to the sleeve 4, and the other end of which is connected to the sliding rod 93. When the sliding ring 72 moves, the sliding rod 93 on the sliding ring 72 will move accordingly. In this process, the sliding rod 93 will first move in the first opening. When the sliding rod 93 moves to the connecting position between the first opening and the second opening, the sliding rod 93 cannot move further. At this time, the staff rotates the sliding ring 72 so that the sliding ring 72 drives the sliding rod 93 to rotate. In this process, the sliding rod 93 will move in the second opening until the sliding rod 93 moves to the connecting position between the second opening and the third opening. At this time, the sliding rod 93 cannot move further and the sliding ring 72 cannot rotate further. Finally, the staff releases the sliding ring 72 so that the sliding rod 93 is reset under the elastic force of the tension spring 95. When the sliding rod 93 is reset, it can move in the third opening until the sliding rod 93 moves to the end of the third opening away from the second opening. In this case, the sliding rod 93 will be stuck in the third opening under the elastic force of the tension spring 95, and the position of the sliding ring 72 is fixed accordingly.

[0059] The clamping structure includes: a plurality of connection capsules 81, all fixed on the inner surface of the sleeve 4, the plurality of connection capsules 81 are distributed in a circumferential array around the axis of the sleeve 4, and each connection capsule 81 is connected to one of the airbags 73; a plurality of clamping blocks 82, respectively fixed on the plurality of connection capsules 81, and the surface of each clamping block 82 is provided with anti-slip grooves. When the connection capsules 81 are inflated, the clamping blocks 82 can move and press the cable body 1, so when the sliding ring 72 squeezes the airbag 73, the plurality of clamping blocks 82 can clamp the cable body 1 together to fix the sleeve 4.

[0060] The specific working principle of the present invention is as follows:

[0061] When the new energy vehicle charging cable with heat dissipation performance proposed by the present invention is in use, a plurality of heat sinks are arranged on the cable body 1, which can dissipate heat for the cable body 1, prevent the cable body 1 from overheating during operation, and protect the cable body 1. For the heat sink, when the cable body 1 transmits current, the semiconductor refrigeration sheet 63 is energized synchronously, and when the semiconductor refrigeration sheet 63 is energized, it can cool and cool the coolant inside the cooling box 61. Furthermore, during the operation of the cable body 1, the surface temperature of the cable body 1 will gradually rise, which makes the temperature of the trigger tube 3 sleeved on the cable body 1 gradually rise. When the temperature inside the trigger tube 3 reaches the boiling point of the trigger medium, the trigger medium will evaporate and vaporize. For substances of the same mass, the volume in the gaseous state is usually larger than the volume in the liquid state. This is because the distance between molecules of the substance in the gaseous state is much larger than the distance between molecules in the liquid state. In the liquid state, the interaction between molecules is strong, and the molecules are arranged relatively tightly, so the space occupied is small, and the volume is relatively small. In the gaseous state, the interaction between molecules is weak, and the molecules can move freely and occupy a larger space, resulting in an increase in volume. Therefore, for the same mass of a substance, the volume in the gaseous state will be larger than the volume in the liquid state. Therefore, when the trigger medium evaporates, the gaseous trigger medium will be filled into the interior of the sealing box 51 through the connecting pipe 53 and push the sliding plug 52 to move.

[0062] For the sealing box 51, the two one-way valves 56 thereon have opposite flow limiting directions. Specifically, one of the one-way valves 56 limits the liquid to only enter the sealing box 51, and the other one-way valve 56 limits the liquid to only flow out of the sealing box 51. When the sliding plug 52 moves toward one end of the sealing box 51, the sliding plug 52 can press the coolant in the sealing box 51 into the cooling tube 2 through the corresponding mounting tube 55. When the sliding plug 52 moves toward the other end of the sealing box 51, the sliding plug 52 can extract the coolant in the cooling tube 2. Therefore, when the gaseous triggering medium is filled into the interior of the sealing box 51, the sliding plug 52 will move and push the coolant into the interior of the cooling tube 2. When the coolant enters the interior of the cooling tube 2, the cooling tube 2 can cool the cable body 1, so that the surface temperature of the cable body 1 is reduced.

[0063] When the surface temperature of the cable body 1 drops, the temperature of the trigger tube 3 and the trigger medium inside it will also drop. When the temperature drops below the boiling point of the trigger medium, the trigger medium will cool and liquefy, and change from gas to liquid. In this case, the gaseous trigger medium no longer applies thrust to the slide plug 52. Under the elastic force of the spring 54, the slide plug 52 will reset and push the trigger medium back to the inside of the trigger tube 3. In this process, the slide plug 52 can perform a pumping action and extract the low-temperature coolant in the cooling tube 2. Further, when the surface temperature of the cable body 1 rises again, the trigger medium will evaporate and vaporize again, and push the slide plug 52 to move again. Based on the above process, during the operation of the cable body 1, the slide plug 52 will reciprocate inside the sealing box 51 under the change of the surface temperature of the cable body 1, and continuously perform the action of pumping and discharging liquid, which makes the coolant circulate between the cooling tube 2, the cooling box 61 and the sealing box 51. When the coolant passes through the cooling box 61, the semiconductor refrigeration plate 63 installed on the cooling box 61 can cool the coolant, so that the interior of the cooling tube 2 can always be filled with low-temperature coolant. This design can ensure the cooling effect of the cooling tube 2 and the coolant inside it on the cable body 1, thereby ensuring the heat dissipation performance of the cable body 1.

[0064] It should be noted that the semiconductor refrigeration chip 63 is installed in the assembly port 62, and the heat-conducting surface of the semiconductor refrigeration chip 63 faces the outside of the sealing box 51, so that the semiconductor refrigeration chip 63 can dissipate heat normally during power-on operation. In addition, the trigger medium is a liquid with a boiling point of about 70°C.

[0065] For the sleeve 4, both ends of the sleeve 4 are provided with a clamping structure, which facilitates the fixing of the sleeve 4 on the cable body 1. When fixing the sleeve 4, the staff first passes the cable body 1 through the sleeve 4, and then pulls the sliding ring 72 to move the sliding ring 72 toward the direction of the fixing ring 71. The sliding ring 72 can squeeze the airbag 73 when moving, so that the gas inside the airbag 73 can enter the interior of the several connecting bags 81 at the end of the sleeve 4, thereby inflating the several connecting bags 81. When the connecting bags 81 are inflated, the clamping block 82 can move and press the cable body 1. Therefore, when the sliding ring 72 squeezes the airbag 73, the several clamping blocks 82 can clamp the cable body 1 together to fix the sleeve 4, which is convenient for the staff to quickly disassemble and assemble the sleeve 4. In addition, when the sleeve 4 is installed in place, there is a gap between the sleeve 4 and the cable body 1, and the gap forms an air flow channel, allowing air flow to flow between the cable body 1 and the sleeve 4. This design is conducive to the heat dissipation of the surface of the cable body 1, thereby ensuring the heat dissipation performance of the cable body 1.

[0066] A fixing plate 91 is also fixed on the cooling box 61. When the sliding ring 72 moves, the sliding rod 93 on the sliding ring 72 will move accordingly. In this process, the sliding rod 93 will first move in the first opening. When the sliding rod 93 moves to the connecting position between the first opening and the second opening, the sliding rod 93 cannot move further. At this time, the staff rotates the sliding ring 72 so that the sliding ring 72 drives the sliding rod 93 to rotate. In this process, the sliding rod 93 will move in the second opening until the sliding rod 93 moves to the connecting position between the second opening and the third opening. At this time, the sliding rod 93 cannot move further and the sliding ring 72 cannot rotate further. Finally, the staff releases the sliding ring 72 so that the sliding rod 93 is reset under the elastic force of the tension spring 95. When the sliding rod 93 is reset, it can move in the third opening until the sliding rod 93 moves to the end of the third opening away from the second opening. In this case, the slide rod 93 will be stuck in the third opening under the elastic force of the tension spring 95, and the position of the sliding ring 72 will be fixed accordingly. This design can ensure the clamping effect of the plurality of clamping blocks 82 on the cable body 1. When the sleeve 4 needs to be removed, the staff only needs to push and rotate the sliding ring 72 in the opposite direction to make the slide rod 93 slide back into the first opening.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy vehicle charging cable with heat dissipation performance, characterized in that: The automobile charging cable is composed of a cable body (1) and a plurality of heat sinks, wherein the plurality of heat sinks are distributed in a linear array along the length direction of the cable body (1); Each of the heat sinks comprises a cooling tube (2), a trigger tube (3) and a sleeve (4); the cooling tube (2) and the trigger tube (3) are both sleeved on the cable body (1); the sleeve (4) is also sleeved on the cable body (1); the cooling tube (2) and the trigger tube (3) are both placed inside the sleeve (4); and a trigger medium is stored inside the trigger tube (3); Wherein, each of the sleeves (4) is provided with a pumping structure and a cooling structure.

2. The new energy vehicle charging cable with heat dissipation performance according to claim 1, characterized in that: The pumping structure comprises: A sealing box (51) fixed on the outer peripheral surface of the sleeve (4); A sliding plug (52) is sealingly and slidably connected inside the sealing box (51); A connecting tube (53), one end of which is connected to the sealing box (51) and the other end of which is connected to the trigger tube (3); A spring (54), one end of which is connected to the inner surface of the sealing box (51), and the other end of which is connected to the sliding plug (52); Two installation tubes (55), one end of each of which is connected to the sealing box (51), and one end of one of the installation tubes (55) away from the sealing box (51) is connected to the cooling tube (2); Two one-way valves (56) are respectively installed on the two installation pipes (55).

3. The new energy vehicle charging cable with heat dissipation performance according to claim 2, characterized in that: The flow limiting directions of the two one-way valves (56) are opposite.

4. The new energy vehicle charging cable with heat dissipation performance according to claim 2, characterized in that: The cooling structure comprises: A cooling box (61) is fixed on the outer peripheral surface of the sleeve (4), a cooling liquid is stored inside the cooling box (61), and the cooling box (61) is connected to the other end of the cooling pipe (2) through a connecting pipe; An assembly opening (62) is provided on a side surface of the cooling box (61); A semiconductor cooling sheet (63) is installed in the assembly opening (62), and a heat-conducting surface of the semiconductor cooling sheet (63) faces the outside of the cooling box (61).

5. The new energy vehicle charging cable with heat dissipation performance according to claim 4, characterized in that: Each of the sleeves (4) is provided with an inflation structure and a limiting structure, and both ends of each of the sleeves (4) are provided with a clamping structure; The inflatable structure comprises: A fixing ring (71) fixedly sleeved at the end of the sleeve (4); A sliding ring (72) is slidably mounted on the sleeve (4); The two air bags (73) are both arranged between the fixed ring (71) and the sliding ring (72).

6. The new energy vehicle charging cable with heat dissipation performance according to claim 5, characterized in that: The limiting structure comprises: A fixing plate (91) fixed on a side of the cooling box (61); A slideway (92) is provided on the fixing plate (91); A slide rod (93) is fixed on the slide ring (72), and one end of the slide rod (93) away from the slide ring (72) extends into the slideway (92); An end cap (94) is fixed to an end of the slide rod (93) away from the slide ring (72); A tension spring (95) has one end connected to the sleeve (4) and the other end connected to the slide bar (93).

7. The new energy vehicle charging cable with heat dissipation performance according to claim 5, characterized in that: The compression structure comprises: A plurality of connection capsules (81) are fixed on the inner surface of the sleeve (4), the plurality of connection capsules (81) are distributed in a circumferential array around the axis of the sleeve (4), and each of the connection capsules (81) is connected to one of the airbags (73); A plurality of pressing blocks (82) are respectively fixed on the plurality of connecting capsules (81).

8. The new energy vehicle charging cable with heat dissipation performance according to claim 7, characterized in that: The surface of each pressing block (82) is provided with anti-slip grooves.

9. The new energy vehicle charging cable with heat dissipation performance according to claim 1, characterized in that: There is a gap between the cable body (1) and the sleeve (4).

10. The new energy vehicle charging cable with heat dissipation performance according to claim 6, characterized in that: The slideway (92) comprises a first opening, a second opening and a third opening, the first opening and the third opening are connected via the second opening, the first opening and the third opening are parallel to each other, and the first opening and the second opening are perpendicular to each other.

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