A new energy vehicle charging cable with heat dissipation performance

Abstract

The present invention relates to the technical field of new energy vehicle charging cables, and discloses 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, and the plurality of heat dissipation components are linearly arrayed along the length direction of the cable body; wherein, each heat dissipation component includes a cooling tube, a trigger tube and a sleeve. Both the cooling tube and the trigger tube are sleeved on the cable body, and the sleeve is also sleeved on the cable body. The cooling tube and the trigger tube are both placed inside the sleeve, and a trigger medium is stored inside the trigger tube. The heat dissipation component designed by the present invention not only ensures the continuous cooling effect of the cooling tube and the coolant inside it on the cable body, but also improves the heat dissipation efficiency through an automatic circulation mechanism, thereby effectively ensuring the heat dissipation performance and stable operation of the cable body.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging cables, and particularly 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 stranded conductors of multiple soft copper wires, covered with a rubber insulation layer, and may be wrapped with Teflon tape to increase insulation performance. The signal control cores are used for signal transmission and control, and may include structures such as tinned copper braided layers to improve the stability and anti-interference ability of signal transmission. The outside of the cable may also include a waterproof resin coating, a shielding wrap layer, and a rubber outer sheath, etc., to enhance the waterproof, electromagnetic interference protection, abrasion resistance and other performances of the cable.

[0003] After retrieval, a Chinese patent with the publication number CN110033893A discloses a composite cable, including a cable outer sheath. There is a cable cavity inside the cable outer sheath. A core wire is suspended in the middle of the cable cavity. The 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 inside the cable outer sheath. The metal sheet layers extend along the length direction of the cable outer sheath. More than one protective rod is vertically arranged on the inner side surface of the metal sheet layer. The protective rods between the upper and lower metal sheet layers are arranged in a staggered manner. Each protective rod has an activity cavity inside. The proposed composite cable in the above solution adopts a suspended setting method, which can be effectively applied in movable dragging occasions, has very good anti-shearing and heat dissipation performances, and can well protect the internal core wires. However, when the above solution is actually used, there are still the following deficiencies:

[0004] The cable proposed in the above solution does not have a heat dissipation function. First of all, a certain amount of heat will be generated in the cable during the charging process. Without an effective heat dissipation mechanism, this heat will accumulate inside the cable, resulting in an increase in the cable temperature. High temperature will accelerate the aging process of the internal materials of the cable, including conductors, insulation layers, and sheaths, etc., thereby reducing the service life of the cable. Long-term operation at high temperature may also cause the mechanical properties of the cable to decline, increasing the risk of cable fracture or damage. Secondly, the increase in cable temperature may also affect the charging efficiency. In a high-temperature environment, the resistance of the cable will increase, resulting in an increase in power loss during the power transmission process, thereby reducing the charging efficiency. This will not only prolong the charging time, but also may 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 an overheat 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 deficiencies existing in the prior art, and a new energy vehicle charging cable with heat dissipation performance is proposed.

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

[0008] A new energy vehicle charging cable with heat dissipation performance, which is composed of a cable body and several heat dissipation components. The several heat dissipation components are linearly arrayed along the length direction of the cable body;

[0009] Among them, each heat dissipation component includes a cooling pipe, a trigger pipe and a sleeve. Both the cooling pipe and the trigger pipe are sleeved on the cable body, and the sleeve is also sleeved on the cable body. The cooling pipe and the trigger pipe are both placed inside the sleeve, and a trigger medium is stored inside the trigger pipe;

[0010] Among them, a pumping structure and a cooling structure are provided on each sleeve.

[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 slidably connected inside the sealing box;

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

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

[0016] Two mounting pipes, one end of each of which is connected to the sealing box. One of the mounting pipes is connected to the cooling pipe at the end far from the sealing box;

[0017] Two one-way valves, respectively installed on the two mounting 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, fixed on the outer peripheral surface of the sleeve. The cooling box stores coolant inside, and the cooling box is connected to the other end of the cooling pipe through a connecting pipe;

[0021] The assembly port is opened on the side of the cooling box;

[0022] The semiconductor refrigeration sheet is installed in the assembly port, and the 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, an inflation structure and a limiting structure are provided on each of the sleeves, and pressing structures are provided at both ends of each sleeve;

[0024] The inflation structure includes:

[0025] The fixed ring is fixedly sleeved at the end of the sleeve;

[0026] The sliding ring is slidably sleeved 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] The fixed plate is fixed on the side of the cooling box;

[0030] The slideway is opened on the fixed plate;

[0031] The slide bar is fixed on the sliding ring, and the end of the slide bar away from the sliding ring extends into the slideway;

[0032] The end cap is fixed at the end of the slide bar away from the sliding ring;

[0033] One end of the tension spring is connected to the sleeve, and the other end is connected to the slide bar.

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

[0035] A plurality of connecting air bags are all fixed on the inner surface of the sleeve, and the plurality of connecting air bags are circumferentially arranged around the axis of the sleeve, and each connecting air bag is communicated with one of the air bags;

[0036] A plurality of pressing blocks are respectively fixed on the plurality of connecting air bags.

[0037] As a preferred technical solution of the present invention, anti-slip lines are provided on the surface of each pressing block.

[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 slideway 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. Through the reciprocating movement of two one-way valves with opposite current-limiting directions and the slide plug, the circulation of the coolant among the cooling pipe, the cooling box and the sealing box is realized. When the surface temperature of the cable body rises, the gaseous triggering medium pushes the slide plug to press the coolant into the cooling pipe for cooling; when the surface temperature of the cable body drops, the triggering medium liquefies, and the slide plug resets under the action of the spring and extracts the coolant in the cooling pipe. During this process, the coolant circulates continuously, and when passing through the cooling box, the semiconductor refrigeration sheet can further reduce its temperature, ensuring that the inside of the cooling pipe is always filled with low-temperature coolant. This design not only ensures the continuous cooling effect of the cooling pipe and the coolant inside on the cable body, but also improves the heat dissipation efficiency through the automatic circulation mechanism, thus effectively ensuring the heat dissipation performance and stable operation of the cable body;

[0042] 2. The pressing structures provided at both ends of the sleeve, through the extrusion of the sliding ring on the airbag, cause the connecting airbag to inflate and drive the pressing block to clamp the cable body, realizing the rapid fixation of the sleeve. This design not only simplifies the installation process, reduces the operation difficulty of the staff, but also improves the installation efficiency, enabling the sleeve to be quickly and firmly fixed on the cable body, facilitating subsequent maintenance, disassembly and assembly work;

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

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

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

[0046] Figure 2 FIG. is a schematic structural diagram of the cable body, the cooling pipe, and the trigger pipe;

[0047] Figure 3 FIG. is a schematic structural diagram of the sleeve;

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

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

[0050] Figure 6 FIG. is a schematic structural diagram of the pressing structure;

[0051] Figure 7 FIG. is a schematic cross-sectional structural diagram of the cooling box;

[0052] Figure 8 FIG. is Figure 4 an enlarged view of the structure at A of

[0053] In the figure: 1. Cable body; 2. Cooling pipe; 3. Trigger pipe; 4. Sleeve; 51. Sealing box; 52. Slide plug; 53. Connecting pipe; 54. Spring; 55. Installation pipe; 56. Check valve; 61. Cooling box; 62. Assembly port; 63. Semiconductor refrigeration sheet; 71. Fixed ring; 72. Sliding ring; 73. Airbag; 81. Connecting bladder; 82. Pressing block; 91. Fixed plate; 92. Slideway; 93. Slide bar; 94. End cap; 95. Tension spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0055] Referring to Figures 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 linearly arrayed along the length direction of the cable body 1. Among them, each heat dissipation component includes a cooling tube 2, a trigger tube 3 and a sleeve 4. Both the cooling tube 2 and the trigger tube 3 are sleeved on the cable body 1, and the sleeve 4 is also sleeved on the cable body 1. There is a gap between the cable body 1 and the sleeve 4. Both the cooling tube 2 and the trigger tube 3 are placed inside the sleeve 4, and a trigger medium is stored inside the trigger tube 3.

[0056] Among them, each sleeve 4 is provided with a pumping structure and a cooling structure. The pumping structure includes: a sealing box 51 fixed on the outer peripheral surface of the sleeve 4; a sliding plug 52 sealingly and slidably connected inside the sealing box 51; a communication pipe 53 with one end communicating with the sealing box 51 and the other end communicating with the trigger tube 3; a spring 54 with one end connected to the inner surface of the sealing box 51 and the other end connected to the sliding plug 52; two mounting pipes 55 with one end of each communicating with the sealing box 51, and one of the mounting pipes 55 away from the sealing box 51 communicating with the cooling tube 2; two one-way valves 56 respectively installed on the two mounting pipes 55, and the current-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 a substance, the volume in the gaseous state is usually larger than that in the liquid state. This is because when a substance is in the gaseous state, the distance between its molecules is much larger than that in the liquid state. In the liquid state, the intermolecular interaction force is stronger, the molecules are arranged relatively closely, so the occupied space is smaller and the volume is relatively smaller. While in the gaseous state, the intermolecular interaction force is weaker, 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 is larger than that in the liquid state. So, when the trigger medium evaporates and vaporizes, the gaseous trigger medium will be filled into the inside of the sealing box 51 through the communication 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, with coolant stored inside the cooling box 61, and the cooling box 61 is communicated with the other end of the cooling pipe 2 through a connecting pipe; an assembly port 62 opened on the side of the cooling box 61; a thermoelectric cooler 63 installed in the assembly port 62, and the heat conducting surface of the thermoelectric cooler 63 faces the outside of the cooling box 61. When the coolant passes through the cooling box 61, the thermoelectric cooler 63 installed on the cooling box 61 can cool down the coolant, so that the inside of the cooling pipe 2 can always be filled with low-temperature coolant. This design can ensure the cooling effect of the cooling pipe 2 and the coolant inside it on the cable body 1. For the thermoelectric cooler 63, it is installed in the assembly port 62, and the heat conducting surface of the thermoelectric cooler 63 faces the outside of the sealing box 51, which enables the thermoelectric cooler 63 to dissipate heat normally during the energized operation.

[0058] An inflation structure and a limiting structure are provided on each sleeve 4, and a pressing structure is provided at both ends of each sleeve 4; the inflation structure includes: a fixing ring 71 fixedly sleeved on the end of the sleeve 4; a sliding ring 72 slidably sleeved on the sleeve 4; two air bags 73 both arranged between the fixing ring 71 and the sliding ring 72, and the limiting structure includes: a fixing plate 91 fixed on the side of the cooling box 61; a slideway 92 opened on the fixing plate 91, and the slideway 92 includes a first opening, a second opening and a third opening, and the first opening and the third opening are communicated 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 slide bar 93 fixed on the sliding ring 72, and the end of the slide bar 93 away from the sliding ring 72 extends into the slideway 92; an end cap 94 fixed on the end of the slide bar 93 away from the sliding ring 72; a tension spring 95 with one end connected to the sleeve 4 and the other end connected to the slide bar 93. When the sliding ring 72 moves, the slide bar 93 on the sliding ring 72 will move accordingly. During this process, the slide bar 93 will first move in the first opening. When the slide bar 93 moves to the communicating position of the first opening and the second opening, the slide bar 93 cannot move any further. At this time, the staff rotates the sliding ring 72, so that the sliding ring 72 drives the slide bar 93 to rotate. During this process, the slide bar 93 will move in the second opening until the slide bar 93 moves to the communicating position of the second opening and the third opening. At this time, the slide bar 93 cannot move any further, and the sliding ring 72 cannot rotate any further. Finally, the staff releases the sliding ring 72, so that the slide bar 93 is reset under the elastic force of the tension spring 95. When the slide bar 93 is reset, it can move in the third opening until the slide bar 93 moves to the end of the third opening away from the second opening. In this case, the slide bar 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 pressing structure includes: a plurality of connecting sacs 81, all fixed on the inner surface of the sleeve 4, the plurality of connecting sacs 81 being circumferentially arrayed around the axis of the sleeve 4, and each connecting sac 81 communicating with one of the air bags 73; a plurality of pressing blocks 82, respectively fixed on the plurality of connecting sacs 81, and anti-slip lines being provided on the surface of each pressing block 82. When the connecting sacs 81 are inflated and expanded, the pressing blocks 82 can move and press against the cable body 1. Therefore, when the sliding ring 72 squeezes the air bag 73, the plurality of pressing blocks 82 can jointly clamp the cable body 1 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 dissipation components are provided on the cable body 1, and the heat dissipation components can dissipate heat from the cable body 1, avoiding overheating of the cable body 1 during operation and protecting the cable body 1. For the heat dissipation components, when the cable body 1 transmits current, the semiconductor refrigeration sheet 63 is synchronously powered on, and when the semiconductor refrigeration sheet 63 is powered on, it can refrigerate and cool the coolant inside the cooling box 61. Further, during the operation of the cable body 1, the surface temperature of the cable body 1 will gradually rise, which causes the temperature of the trigger tube 3 sleeved on the cable body 1 to 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 that in the liquid state because when a substance is in the gaseous state, the distance between its molecules is much larger than that in the liquid state. In the liquid state, the intermolecular interaction force is stronger, the molecules are arranged relatively closely, so the occupied space is smaller and the volume is relatively smaller, while in the gaseous state, the intermolecular interaction force is weaker, the molecules can move freely and occupy a larger space, resulting in an increase in volume. Therefore, for substances of the same mass, the volume in the gaseous state is larger than that in the liquid state. Thus, when the trigger medium evaporates and vaporizes, the gaseous trigger medium will be filled into the inside of the sealed box 51 through the connecting pipe 53 and push the sliding plug 52 to move.

[0062] For the sealed box 51, the current-limiting directions of the two one-way valves 56 on it are opposite. Specifically, one of the one-way valves 56 restricts the liquid to only enter the sealed box 51, and the other one-way valve 56 restricts the liquid to only flow out of the sealed box 51. When the sliding plug 52 moves towards one end of the sealed box 51, the sliding plug 52 can press the coolant in the sealed box 51 into the cooling pipe 2 through the corresponding installation pipe 55. When the sliding plug 52 moves towards the other end of the sealed box 51, the sliding plug 52 can extract the coolant in the cooling pipe 2. Therefore, when the gaseous trigger medium is filled into the interior of the sealed box 51, the sliding plug 52 will move and push the coolant into the interior of the cooling pipe 2. When the coolant enters the interior of the cooling pipe 2, the cooling pipe 2 can cool down the cable body 1, causing the surface temperature of the cable body 1 to drop.

[0063] When the surface temperature of the cable body 1 drops, the temperature of the trigger pipe 3 and the trigger medium inside it will also drop accordingly. When the temperature drops below the boiling point of the trigger medium, the trigger medium will cool and liquefy, changing from gaseous to liquid state. In this case, the gaseous trigger medium no longer exerts a thrust on the sliding plug 52. Under the elastic force of the spring 54, the sliding plug 52 will reset and push the trigger medium back into the interior of the trigger pipe 3. During this process, the sliding plug 52 can perform a liquid extraction action and extract the low-temperature coolant in the cooling pipe 2. Further, when the surface temperature of the cable body 1 rises again, the trigger medium will evaporate and vaporize again and push the sliding plug 52 to move again. Based on the above process, during the operation of the cable body 1, the sliding plug 52 will reciprocate inside the sealed box 51 under the change of the surface temperature of the cable body 1 and continuously perform the actions of liquid extraction and liquid discharge, which enables the coolant to circulate between the cooling pipe 2, the cooling box 61 and the sealed box 51. When the coolant passes through the cooling box 61, the semiconductor refrigeration chip 63 installed on the cooling box 61 can cool down the coolant, ensuring that the interior of the cooling pipe 2 is always filled with low-temperature coolant. This design can ensure the cooling effect of the cooling pipe 2 and the coolant inside it on the cable body 1, and thus ensure the heat dissipation performance of the cable body 1.

[0064] It should be noted that for the semiconductor refrigeration chip 63, it is installed in the assembly port 62, and the heat-conducting surface of the semiconductor refrigeration chip 63 faces the outside of the sealed box 51, which enables the semiconductor refrigeration chip 63 to dissipate heat normally during the energized operation. In addition, the trigger medium is selected as a liquid with a boiling point of about 70 °C.

[0065] For the sleeve 4, pressing structures are provided at both ends of the sleeve 4, 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 make the sliding ring 72 move towards the fixed ring 71. When the sliding ring 72 moves, it can squeeze the airbag 73, so that the gas inside the airbag 73 can enter several connecting bags 81 at the end of the sleeve 4, and then several connecting bags 81 are inflated and expanded. When the connecting bags 81 are inflated and expanded, the pressing blocks 82 can move and press against the cable body 1. Therefore, when the sliding ring 72 squeezes the airbag 73, several pressing blocks 82 can jointly clamp the cable body 1 to fix the sleeve 4, which facilitates 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 this 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 from the surface of the cable body 1, so as to ensure 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 within the first opening. When the sliding rod 93 moves to the communication position between the first opening and the second opening, the sliding rod 93 cannot continue to move. At this time, the staff rotates the sliding ring 72 to make the sliding ring 72 drive the sliding rod 93 to rotate. In this process, the sliding rod 93 will move within the second opening until the sliding rod 93 moves to the communication position between the second opening and the third opening. At this time, the sliding rod 93 cannot continue to move, and the sliding ring 72 cannot continue to rotate. 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 within 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 will be fixed accordingly. This design can ensure the pressing effect of several pressing blocks 82 on the cable body 1. When the sleeve 4 needs to be disassembled, the staff only needs to push and rotate the sliding ring 72 in the reverse direction to make the sliding rod 93 slide back into the first opening.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and 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 vehicle charging cable is composed of a cable body (1) and a number of heat dissipation components, and the number of the heat dissipation components are linearly arrayed along the length direction of the cable body (1); Wherein, each of the heat dissipation components 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), 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, the pumping structure includes: a sealing box (51), fixed on the outer peripheral surface of the sleeve (4); a sliding plug (52), hermetically and slidably connected inside the sealing box (51); a communicating pipe (53), one end of which is communicated with the sealing box (51) and the other end of which is communicated with 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 mounting pipes (55), one end of each of which is communicated with the sealing box (51), and one of the mounting pipes (55) is communicated with the cooling tube (2) at the end away from the sealing box (51); two one-way valves (56), respectively installed on the two mounting pipes (55), the cooling structure includes: a cooling box (61), fixed on the outer peripheral surface of the sleeve (4), a coolant is stored inside the cooling box (61), and the other end of the cooling box (61) is communicated with the cooling tube (2) through a connecting pipe; an assembly port (62), opened on the side surface of the cooling box (61); a semiconductor refrigeration sheet (63), installed in the assembly port (62), and the heat conducting surface of the semiconductor refrigeration sheet (63) faces the outside of the cooling box (61).

2. The new energy vehicle charging cable with heat dissipation performance according to claim 1, characterized in that, The current limiting directions of the two one-way valves (56) are opposite.

3. The new energy vehicle charging cable with heat dissipation performance according to claim 2, characterized in that, Each of the sleeves (4) is provided with an inflation structure and a limiting structure, and a pressing structure is provided at both ends of each of the sleeves (4); The inflation structure includes: A fixed ring (71), fixedly sleeved at the end position of the sleeve (4); A sliding ring (72), slidably sleeved on the sleeve (4); Two air bags (73), both arranged between the fixed ring (71) and the sliding ring (72).

4. The new energy vehicle charging cable with heat dissipation performance according to claim 3, characterized in that, The limiting structure includes: A fixing plate (91), fixed on the side surface of the cooling box (61); A slideway (92), opened on the fixing plate (91); A slide bar (93), fixed on the sliding ring (72), and the end of the slide bar (93) away from the sliding ring (72) extends into the slideway (92); An end cap (94), fixed at the end of the slide bar (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 slide bar (93).

5. The new energy vehicle charging cable with heat dissipation performance according to claim 3, characterized in that, The pressing structure includes: A number of connecting sacs (81), all fixed to the inner surface of the sleeve (4), and a number of the connecting sacs (81) are circumferentially arrayed around the axis of the sleeve (4), and each of the connecting sacs (81) is communicated with one of the air bags (73); A number of pressing blocks (82), respectively fixed to the number of connecting sacs (81).

6. The new energy vehicle charging cable with heat dissipation performance according to claim 5, characterized in that, The surface of each pressing block (82) is provided with anti-slip lines.

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

8. The new energy vehicle charging cable with heat dissipation performance according to claim 4, wherein, The slideway (92) includes a first opening, a second opening and a third opening, the first opening and the third opening are communicated 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.

Images