A low-density, lightweight, high-performance charging pile cable

Abstract

The present invention discloses a low-density lightweight high-performance charging pile cable, which relates to the technical field of cables. An outer protection component is arranged outside the inner conductor. Middle support blocks are evenly sleeved outside the neutral wire. A buffer rubber tube is clamped between adjacent neutral wires. A flame-retardant tube is clamped between adjacent buffer rubber tubes. Heat dissipation grooves are evenly formed inside the outer insulation layer. Hollow balls are filled inside the inner buffer tube. Rubber balls are filled inside the outer wear-resistant tube. An active protection component is sleeved outside the outer insulation layer. In the present invention, the outer wear-resistant tube directly contacts and slides on the ground, avoiding the abrasion caused by the direct friction between the outer insulation layer and the ground. Moreover, the inner buffer tube is of a hollow rubber tube structure, and the inside of the buffer rubber tube is in a hollow state, making the overall density of the cable lower. When the cable catches fire due to overheating, the high-temperature and high-pressure gas generated flows along the rupture, enters the heat dissipation tube through the communication holes, and is discharged from the one-way valve tubes at both ends of the cable, preventing the problem of electric leakage caused by the rupture of the outer insulation layer.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and particularly to a low-density, light-weight, and high-performance charging pile cable. Background Art

[0002] The power source of new energy electric vehicles is a storage battery, and the capacity and charging time of its storage battery have become key indicators for evaluating the performance of a new energy electric vehicle. Currently, new energy electric vehicles are generally charged on specific charging piles, and a connector and a charging pile cable are used to connect the charging pile and the new energy electric vehicle. The charging pile cable is usually three-core or five-core, and sometimes wires for data transmission are added to facilitate data transmission.

[0003] In the patent with the application number 202122389001.8, the "DC charging pile cable" is mentioned, which solves the problem of small rated load of the existing charging pile cable with the same cross-section, and the current-carrying capacity is 2.5 - 3 times that of the cable with the same cross-section. However, during the use of the charging pile cable, it often needs to be bent and wound and dragged on the ground. The positions that are often bent and rubbed against the ground are prone to damage, resulting in electric leakage. In order to improve the protection and flame retardancy performance, wrapping a thick protective layer will make the cable heavy and difficult to bend and drag, bringing inconvenience to use. After a high-temperature fire, the inside is prone to rupture and electric leakage due to excessive air pressure, causing safety problems. Summary of the Invention

[0004] The present invention provides a low-density, light-weight, and high-performance charging pile cable, which can effectively solve the problems raised in the above background art that during the use of the charging pile cable, it often needs to be bent and wound and dragged on the ground, the positions that are often bent and rubbed against the ground are prone to damage, resulting in electric leakage. In order to improve the protection and flame retardancy performance, wrapping a thick protective layer will make the cable heavy and difficult to bend and drag, bringing inconvenience to use. After a high-temperature fire, the inside is prone to rupture and electric leakage due to excessive air pressure, causing safety problems.

[0005] To achieve the above object, the present invention provides the following technical solution: A low-density, light-weight, and high-performance charging pile cable includes inner conductors, and an outer protection component is arranged outside several of the inner conductors. The outer protection component includes a center line;

[0006] A neutral wire is placed among the three inner wires. Middle support blocks are evenly sleeved outside the neutral wire. Buffer rubber tubes are clamped between adjacent neutral wires. A data cable is installed through the interior of one of the buffer rubber tubes. A flame-retardant tube is clamped between adjacent buffer rubber tubes. A flame-retardant bag is filled inside the flame-retardant tube. Both the buffer rubber tube and the flame-retardant tube are wrapped by an isolation layer. Rupture grooves are evenly opened on the outside of the isolation layer. An outer insulating layer is wrapped outside the isolation layer. Heat equalizing grooves are evenly opened on the inner side of the outer insulating layer. Heat equalizing tubes are inlaid inside the heat equalizing grooves. A communication hole is opened in the middle of the side of the heat equalizing tube close to the isolation layer. One-way valve tubes are inlaid at both ends of the outer insulating layer close to the heat equalizing tubes;

[0007] Inner buffer tubes are inlaid at both edges of the adjacent outer insulating layer. Hollow balls are filled inside the inner buffer tubes. Outer wear-resistant tubes are inlaid at the other two edges of the adjacent outer insulating layer. Rubber balls are filled inside the outer wear-resistant tubes.

[0008] According to the above technical solution, an adsorption groove is opened in the middle of one side of the outer insulating layer. An adsorption tube is bonded to the middle of the other side of the outer insulating layer. Negative pressure grooves are evenly opened on one side of the adsorption tube.

[0009] According to the above technical solution, arc-shaped grooves are opened on the outside of the middle support block corresponding to the inner wires. The inner sides of the arc-shaped grooves are fitted to the outer sides of the inner wires.

[0010] According to the above technical solution, the three buffer rubber tubes and the three flame-retardant tubes are spliced into a circular tube. The outer sides of the buffer rubber tubes and the flame-retardant tubes are closely fitted.

[0011] According to the above technical solution, the outer insulating layer is bent into a spiral shape. The cross-section of the outer insulating layer is a square with a circular hole opened in the middle. A protective outer film is bonded to the outside of the spiral-shaped outer insulating layer.

[0012] According to the above technical solution, both the inner buffer tube and the outer wear-resistant tube are spiral-shaped. The inner buffer tube is inside the spiral-shaped outer insulating layer. The outer wear-resistant tube is outside the spiral-shaped outer insulating layer. The inner buffer tube and the outer wear-resistant tube have the same diameter.

[0013] According to the above technical solution, a movable protection assembly is sleeved outside the outer insulating layer. The movable protection assembly includes an outer protection ring;

[0014] Outer protection rings are evenly sleeved outside the outer insulating layer. Folding retaining rings are bonded between adjacent outer protection rings. A reflective film is bonded to the outside of the folding retaining ring. A supporting rubber ring is bonded to the inside of the outer protection ring. Anti-slip cards are evenly bonded to the inside of the supporting rubber ring;

[0015] One side of the outer protective ring located at both ends is bonded with an end cover. An isolation ring is embedded in the middle of the end cover. A clamping groove is formed inside the isolation ring. A sealing ring is embedded inside the clamping groove. Sealing springs are bonded to the outside of the sealing ring inside the clamping groove. An anti-slip film is bonded to the inner side of the sealing ring.

[0016] According to the above technical solution, the cross-section of the folding retaining ring is V-shaped, and the outer protective ring and the folding retaining ring are combined into a cylindrical structure.

[0017] According to the above technical solution, the end face of the anti-slip card is U-shaped, and the inner width of the anti-slip card is equal to the outer diameter of the outer wear-resistant pipe.

[0018] According to the above technical solution, the end cover is funnel-shaped, and a reflective film is bonded to the outside of the end cover.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. An outer protection component is provided. The two ends of the cable are respectively connected to a charging pile and a charging connector. Since the cable is spiral, the cable is easier to extend and pull. During the process of dragging the cable, the outer insulating layers move away from each other, and the outer wear-resistant pipe directly contacts the ground and slides, avoiding the abrasion caused by the direct friction between the outer insulating layer and the ground;

[0021] When the cable is squeezed, the overall spiral structure is more likely to buffer the impact, and the inner buffer rubber tube, the outer wear-resistant pipe and the inner buffer pipe on the outside will all deform, further buffering and protecting to improve the protection effect, prevent the inner conductor and the data line from being damaged, and the inner buffer pipe is a hollow rubber tube structure with hollow balls filled inside, and the inside of the buffer rubber tube is hollow, so that the overall density of the cable is lower, reducing the overall weight of the cable and making it easier to pull the cable for charging operations;

[0022] When the cable catches fire due to local overheating, the flame retardant bag in the flame retardant pipe ruptures, and the aluminum hydroxide powder inside flows out. The aluminum hydroxide powder decomposes when heated, generating a large amount of water vapor. The generated high-temperature and high-pressure gas flows along the rupture, enters the heat equalizing pipe through the communication holes, and is discharged from the one-way valve pipes at both ends of the cable, preventing the problem of electric leakage caused by the rupture of the outer insulating layer. Moreover, the mist ejected from the one-way valve pipes can also indicate that the cable is damaged due to high temperature. The internal high temperature is discharged through the gas, reducing the probability of combustion damage, and also facilitating the prompt for the staff to perform maintenance and replacement, improving safety and convenience at the same time.

[0023] 2. An active protection component is provided. By pulling the active protection component, the cylindrical structure formed by the outer protection ring and the folding retaining ring is pulled to the bent position after the cable is stored. Two isolation rings are respectively sleeved on both ends of the bent position to protect the outer side of the overall bent part of the spiral cable. The isolation ring at the center of the end cover has a smaller diameter and is sleeved on the outer side of the cable. The anti-slip film of the sealing ring is pushed by the sealing spring to squeeze the outer side of the spiral cable, and the cylindrical structure formed by the outer protection ring and the folding retaining ring is fixed to prevent it from falling. The outer protection ring and the folding retaining ring prevent the problem of uneven wear of the overall cable caused by friction between the bent position and the outside world;

[0024] In summary, the outer protection component protects the cable in multiple aspects such as wear resistance, compression resistance, and flame retardancy, while the active protection component is used to protect the bent part of the cable, making the overall wear and aging of the cable more uniform and extending the service life of the cable. Brief Description of the Drawings

[0025] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0026] In the drawings:

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a schematic structural diagram of the outer protection component of the present invention;

[0029] Figure 3 is the present invention Figure 2 schematic structural diagram of Area A;

[0030] Figure 4 is a schematic installation structure diagram of the support block in the present invention;

[0031] Figure 5 is a schematic installation structure diagram of the isolation layer of the present invention;

[0032] Figure 6 is a schematic structural diagram of the active protection component of the present invention;

[0033] Figure 7 is a schematic installation structure diagram of the anti-slip card of the present invention;

[0034] Figure 8 is the present invention Figure 7 schematic structural diagram of Area B;

[0035] Reference numerals in the figure: 1, inner conductor;

[0036] 2. Outer protection component; 201. Center line; 202. Middle support block; 203. Buffer rubber tube; 204. Data line; 205. Flame retardant tube; 206. Flame retardant bag; 207. Isolation layer; 208. Rupture groove; 209. Outer insulation layer; 210. Heat equalizing groove; 211. Heat equalizing tube; 212. Communication hole; 213. Check valve tube; 214. Adsorption groove; 215. Adsorption tube; 216. Negative pressure groove; 217. Inner buffer tube; 218. Hollow ball; 219. Outer wear-resistant tube; 220. Rubber ball; 221. Protective outer film;

[0037] 3. Movable protection component; 301. Outer protection ring; 302. Folding retaining ring; 303. Reflective film; 304. Support rubber ring; 305. Anti-slip clamp; 306. End cover; 307. Isolation ring; 308. Clamping groove; 309. Sealing ring; 310. Sealing spring; 311. Anti-slip film. Detailed implementation mode

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0039] Embodiment: As Figures 1-8 shown, the present invention provides a technical solution for a low-density, light-weight and high-performance charging pile cable, including an inner conductor 1. An outer protection component 2 is arranged outside a plurality of inner conductors 1. The outer protection component 2 includes a center line 201, a middle support block 202, a buffer rubber tube 203, a data line 204, a flame retardant tube 205, a flame retardant bag 206, an isolation layer 207, a rupture groove 208, an outer insulation layer 209, a heat equalizing groove 210, a heat equalizing tube 211, a communication hole 212, a check valve tube 213, an adsorption groove 214, an adsorption tube 215, a negative pressure groove 216, an inner buffer tube 217, a hollow ball 218, an outer wear-resistant tube 219, a rubber ball 220 and a protective outer film 221;

[0040] A neutral wire 201 is placed between three inner conductors 1. Medium support blocks 202 are evenly sleeved outside the neutral wire 201. Arc-shaped grooves are provided at positions corresponding to the inner conductors 1 on the outside of the medium support blocks 202. The inner sides of the arc-shaped grooves are attached to the outer sides of the inner conductors 1, facilitating clamping the inner conductors 1 on the outside of the medium support blocks 202. A buffer rubber tube 203 is clamped between adjacent neutral wires 201. A data line 204 is installed through the inside of a buffer rubber tube 203. A flame-retardant tube 205 is clamped between adjacent buffer rubber tubes 203. A flame-retardant bag 206 is filled inside the flame-retardant tube 205. Both the buffer rubber tube 203 and the flame-retardant tube 205 are wrapped by an isolation layer 207. Three buffer rubber tubes 203 and three flame-retardant tubes 205 are spliced into a circular tube. The outer sides of the buffer rubber tube 203 and the flame-retardant tube 205 are closely attached to each other, facilitating wrapping the isolation layer 207 on the outside of the three buffer rubber tubes 203 and the three flame-retardant tubes 205. Rupture grooves 208 are evenly provided on the outside of the isolation layer 207. An outer insulating layer 209 is wrapped on the outside of the isolation layer 207. The outer insulating layer 209 is bent into a spiral shape. The cross-section of the outer insulating layer 209 is a square with a circular hole in the middle. A protective outer film 221 is bonded to the outside of the spiral-shaped outer insulating layer 209, better protecting the side of the spiral-shaped outer insulating layer 209 in contact with the outside. Heat dissipation grooves 210 are evenly provided on the inside of the outer insulating layer 209. Heat dissipation tubes 211 are embedded inside the heat dissipation grooves 210. A communication hole 212 is provided in the middle of the side of the heat dissipation tube 211 close to the isolation layer 207. Check valve tubes 213 are embedded at positions close to the heat dissipation tubes 211 at both ends of the outer insulating layer 209. An adsorption groove 214 is provided in the middle of one side of the outer insulating layer 209. An adsorption tube 215 is bonded to the middle of the other side of the outer insulating layer 209. Negative pressure grooves 216 are evenly provided on one side of the adsorption tube 215, enabling the mutually close sides to adsorb each other for temporary fixation when the outer insulating layer 209 is bent into a spiral shape, reducing the gap between the spirals;

[0041] Inner buffer tubes 217 are embedded at both adjacent edges of the outer insulating layer 209. Hollow balls 218 are filled inside the inner buffer tubes 217. Outer wear-resistant tubes 219 are embedded at the other two adjacent edges of the outer insulating layer 209. Both the inner buffer tubes 217 and the outer wear-resistant tubes 219 are spiral-shaped. The inner buffer tubes 217 are on the inside of the spiral-shaped outer insulating layer 209, and the outer wear-resistant tubes 219 are on the outside of the spiral-shaped outer insulating layer 209. The inner buffer tubes 217 and the outer wear-resistant tubes 219 have the same diameter. The inner buffer tubes 217 are made of rubber, and the outer wear-resistant tubes 219 are rubber tubes wrapped with polytetrafluoroethylene films. Rubber balls 220 are filled inside the outer wear-resistant tubes 219.

[0042] An active protection component 3 is sleeved on the outside of the outer insulating layer 209. The active protection component 3 includes an outer protection ring 301, a folding retaining ring 302, a reflective film 303, a support rubber ring 304, an anti-slip clamp 305, an end cover 306, an isolation ring 307, a clamping groove 308, a sealing ring 309, a sealing spring 310, and an anti-slip film 311;

[0043] An outer protection ring 301 is evenly sleeved outside the outer insulation layer 209. A folding retaining ring 302 is bonded between adjacent outer protection rings 301. The cross-section of the folding retaining ring 302 is V-shaped. The outer protection ring 301 and the folding retaining ring 302 are combined into a cylindrical structure to protect the helical cable bending part. A reflective film 303 is bonded to the outside of the folding retaining ring 302. A support rubber ring 304 is bonded to the inside of the outer protection ring 301. Anti-slip cards 305 are evenly bonded to the inside of the support rubber ring 304. The end face of the anti-slip card 305 is U-shaped. The internal width of the anti-slip card 305 is equal to the outer diameter of the outer wear-resistant tube 219, which is convenient for the anti-slip card 305 to be clamped on the outside of the outer wear-resistant tube 219 for temporary fixation;

[0044] On one side of the outer protection rings 301 at both ends, end covers 306 are bonded. The end covers 306 are funnel-shaped. Reflective films 303 are bonded to the outside of the end covers 306 to better protect the end covers 306 and the cables inside the end covers 306. An isolation ring 307 is embedded in the middle of the end cover 306. A clamping groove 308 is opened inside the isolation ring 307. A sealing ring 309 is embedded in the clamping groove 308. Sealing springs 310 are bonded to the outside of the sealing ring 309 at the position inside the clamping groove 308. An anti-slip film 311 is bonded to the inside of the sealing ring 309.

[0045] The working principle and usage process of the present invention: When producing a cable, the middle line 201 is straightened, the inner conductor 1 is clamped outside the middle support block 202, the data line 204 is inserted into the buffer rubber tube 203, and the number of data lines 204 is increased or decreased according to needs. The buffer rubber tube 203 is bonded into the gap between the inner conductors 1. The flame retardant bag 206 is filled with aluminum hydroxide powder, and the flame retardant bag 206 is filled into the flame retardant tube 205. The flame retardant tube 205 is bonded and fixed in the gap between adjacent buffer rubber tubes 203, so that the buffer rubber tube 203 and the flame retardant tube 205 are combined into a cylindrical shape and wrapped outside the inner conductor 1. Subsequently, the cylindrical combination of the buffer rubber tube 203 and the flame retardant tube 205 passes through a rubber extruder to wrap the isolation layer 207, and the heat equalizing tube 211 is bonded to the outside of the isolation layer 207. The communication holes 212 of the heat equalizing tube 211 are attached to the isolation layer 207. Then, the outer insulation layer 209 is wrapped outside the isolation layer 207 through an extruder. When the outer insulation layer 209 is not completely cooled, it is processed into a spiral shape, and then the movable protection assembly 3 is sleeved outside the spiral outer insulation layer 209 to complete the processing process;

[0046] The two ends of the cable are respectively connected to a charging pile and a charging connector. Since the cable is spiral, it is easier for the cable to extend and be pulled. During the process of dragging the cable, the outer insulation layers 209 move away from each other, while the outer wear-resistant tubes 219 directly contact and slide on the ground, avoiding the abrasion caused by the direct friction between the outer insulation layers 209 and the ground. When the cable is squeezed, the overall spiral structure is more likely to buffer the impact, and the buffer rubber tube 203 inside, the outer wear-resistant tubes 219 and the inner buffer tubes 217 on the outside will all deform, further buffering and protecting to improve the protection effect, prevent the inner conductors 1 and the data lines 204 from being damaged, and the inner buffer tubes 217 are hollow rubber tube structures with hollow balls 218 filled inside. The buffer rubber tubes 203 are hollow inside, making the overall density of the cable lower, reducing the overall weight of the cable, and making it easier to pull the cable for charging operations;

[0047] When the cable catches fire due to local overheating, the flame retardant bags 206 inside the flame retardant tubes 205 burst, and the aluminum hydroxide powder inside flows out. The aluminum hydroxide powder decomposes when heated, generating a large amount of water vapor, making the air pressure inside the isolation layer 207 too high. The continuously increasing pressure will cause the rupture grooves 208 to burst, and the generated high-temperature and high-pressure gas flows along the rupture, enters the heat equalizing tube 211 through the communication holes 212, and is discharged from the one-way valve tubes 213 at both ends of the cable. During this process, the temperature at the fire point of the cable will also be reduced, preventing the combustion from proceeding, and at the same time, it can also prevent the problem of electric leakage caused by the rupture of the outer insulation layer 209. Moreover, the mist ejected through the one-way valve tubes 213 can also indicate that the cable is damaged due to high temperature inside. The internal high temperature is discharged through the gas, reducing the probability of combustion damage, and also facilitating the prompt for the staff to carry out maintenance and replacement, improving safety while also enhancing convenience;

[0048] When the charging pile cable is in a stored state, the outer insulation layers 209 of the spiral cable approach each other, and the adsorption tubes 215 are embedded in the adsorption grooves 214 and adsorbed by the negative pressure grooves 216, making the outer insulation layers 209 lean against each other and the structure more compact. Liquids and the like are not easily introduced into the cylindrical interior of the cable spiral. The inner buffer tubes 217 approach and squeeze each other, and the outer wear-resistant tubes 219 approach and squeeze each other. When the cable is stored after use, only the side of the protective outer film 221 of the outer insulation layer 209 faces outward, and the other surfaces of the outer insulation layer 209 are all on the inner side. Light, liquids, etc. are not easily in contact with the other surfaces of the cable, reducing the use of the protection structure while delaying the aging of the cable;

[0049] Only outside the bending position, the insulating layers 209 move away from each other. Pull the movable protection component 3 to pull the cylindrical structure formed by the outer protection ring 301 and the folding retaining ring 302 to the bending position of the cable. The two isolation rings 307 are respectively sleeved on both ends of the bending position. The support rubber ring 304 deforms and the anti-slip clamp 305 is clamped on the outer side of the outer wear-resistant tube 219. The folding retaining rings 302 are evenly distributed on the outer side of the cable to protect the entire outer side of the spiral cable. The diameter of the isolation ring 307 at the center of the end cover 306 is smaller and it is sleeved on the outer side of the cable. The sealing spring 310 pushes the anti-slip film 311 of the sealing ring 309 to squeeze the outer side of the spiral cable, and fixes the cylindrical structure formed by the outer protection ring 301 and the folding retaining ring 302 to prevent it from falling. The outer protection ring 301 and the folding retaining ring 302 prevent the problem that the overall wear of the cable is uneven due to friction between the bending position and the outside world;

[0050] The outer protection component 2 protects the cable in multiple aspects such as wear resistance, pressure resistance, and flame retardancy, while the movable protection component 3 is used to protect the bent part of the cable, making the overall wear and aging of the cable more uniform and extending the service life of the cable.

[0051] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-density, lightweight, high-performance charging pile cable, comprising an inner conductor (1), characterized in that: An outer protective component (2) is arranged outside the plurality of inner conductive wires (1), and the outer protective component (2) comprises a center line (201); A center line (201) is placed between the three inner conductors (1), a center support block (202) is evenly sleeved on the outside of the center line (201), a buffer hose (203) is clamped between adjacent center lines (201), a data line (204) is installed inside one of the buffer hoses (203), a flame retardant tube (205) is clamped between adjacent buffer hoses (203), the flame retardant tube (205) is filled with a flame retardant bag (206), and the buffer hose (203) and the flame retardant tube (205) are both separated by an isolation layer ( 207), the outer side of the isolation layer (207) is uniformly provided with rupture grooves (208), the outer side of the isolation layer (207) is wrapped with an outer insulating layer (209), the inner side of the outer insulating layer (209) is uniformly provided with heat equalizing grooves (210), the inner side of the heat equalizing groove (210) is inlaid with a heat equalizing pipe (211), a connecting hole (212) is formed in the middle of one side of the heat equalizing pipe (211) close to the isolation layer (207), and one-way valve pipes (213) are inlaid at both ends of the outer insulating layer (209) close to the heat equalizing pipe (211); Two adjacent edges of the outer insulating layer (209) are inlaid with inner buffer tubes (217), the interior of the inner buffer tubes (217) is filled with hollow balls (218), and the other two adjacent edges of the outer insulating layer (209) are inlaid with outer wear-resistant tubes (219), the interior of the outer wear-resistant tubes (219) is filled with rubber balls (220); A movable protection component (3) is sleeved on the outside of the outer insulating layer (209), and the movable protection component (3) comprises an outer protective ring (301); An outer protective ring (301) is evenly sleeved on the outer side of the outer insulating layer (209), folding retaining rings (302) are bonded between adjacent outer protective rings (301), a reflective film (303) is bonded on the outer side of the folding retaining ring (302), a supporting rubber ring (304) is bonded on the inner side of the outer protective ring (301), and an anti-slip card (305) is evenly bonded on the inner side of the supporting rubber ring (304); An end cover (306) is bonded to one side of the outer protective ring (301) at both ends, an isolation ring (307) is embedded in the middle of the end cover (306), a clamping groove (308) is opened inside the isolation ring (307), a sealing ring (309) is embedded inside the clamping groove (308), a sealing spring (310) is bonded to the outside of the sealing ring (309) and inside the clamping groove (308), and an anti-slip film (311) is bonded to the inside of the sealing ring (309).

2. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: An adsorption groove (214) is provided in the middle of one side of the outer insulating layer (209), an adsorption tube (215) is bonded to the middle of the other side of the outer insulating layer (209), and negative pressure grooves (216) are evenly provided on one side of the adsorption tube (215).

3. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: An arc-shaped groove is provided on the outer side of the middle support block (202) corresponding to the inner conductor (1), and the inner side of the arc-shaped groove fits the outer side of the inner conductor (1).

4. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: The three buffer rubber hoses (203) and the three flame-retardant hoses (205) are spliced into a circular tube, and the outer sides of the buffer rubber hoses (203) and the flame-retardant hoses (205) are closely attached to each other.

5. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: The outer insulating layer (209) is bent into a spiral shape. The cross-section of the outer insulating layer (209) is a square with a circular hole in the middle, and a protective outer film (221) is bonded to the outside of the spiral-shaped outer insulating layer (209).

6. A low-density, lightweight, high-performance charging pile cable according to claim 5, characterized in that: Both the inner buffer tube (217) and the outer wear-resistant tube (219) are spiral-shaped. The inner buffer tube (217) is inside the spiral-shaped outer insulating layer (209), and the outer wear-resistant tube (219) is outside the spiral-shaped outer insulating layer (209). The inner buffer tube (217) and the outer wear-resistant tube (219) have the same diameter.

7. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: The cross-section of the folding retaining ring (302) is V-shaped, and the outer retaining ring (301) and the folding retaining ring (302) are combined into a cylindrical structure.

8. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: The end face of the anti-slip clamp (305) is U-shaped, and the inner width of the anti-slip clamp (305) is equal to the outer diameter of the outer wear-resistant tube (219).

9. A low-density, lightweight, high-performance charging pile cable according to claim 1, characterized in that: The end cover (306) is funnel-shaped, and a reflective film (303) is bonded to the outside of the end cover (306).

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