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CN-122025271-A - New energy automobile fills electric pile special cable

CN122025271ACN 122025271 ACN122025271 ACN 122025271ACN-122025271-A

Abstract

The invention belongs to the technical field of charging cables, and particularly discloses a special cable for a charging pile of a new energy automobile, which comprises a plurality of conductors; the insulating sleeve is uniformly sleeved on the outer sides of the conductors, the wrapping belt is uniformly sleeved on the outer sides of the plurality of conductors, the sheath is sleeved on the outer sides of the wrapping belt, and a heat dissipation device for dissipating heat of the plurality of conductors is arranged on the inner side of the sheath and comprises a central guide pipe, a heat dissipation guide pipe, a separation assembly and a sealing assembly. According to the invention, the heat radiating device is arranged, and in the using process of the cable, heat generated by the conductor can be transferred into cooling liquid in the heat radiating guide pipe through the central guide pipe, so that the heat of the conductor is quickly absorbed by means of heat conduction and convection, the heat conducting component transfers the heat of the heat radiating guide pipe to the drying pipe, and the air exchange auxiliary heat radiation is realized by combining with the design of the filter screen of the sealing component, so that the high-power charging and heating problems are solved, and the reduction of the insulating property and the attenuation of the conductor are avoided.

Inventors

  • ZHOU XIN
  • YANG ZEQIANG
  • ZHANG HAOHAO
  • CHENG DONGXU
  • ZENG YUCHAO

Assignees

  • 广州市新兴电缆实业有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (10)

  1. 1. The utility model provides a new energy automobile fills electric pile special cable which characterized in that includes: a conductor (1), and the number of the conductors (1) is a plurality; the insulating sleeve (2) is uniformly sleeved on the outer side of the conductor (1); the wrapping belt (3) is uniformly sleeved on the outer sides of the plurality of conductors (1); Sheath (4), cup joint in around the outside of band (3), and sheath (4) inboard is provided with and is used for a plurality of conductor (1) carries out radiating heat abstractor, heat abstractor includes central honeycomb duct (5), heat dissipation pipe (6), separation subassembly and seal assembly, central honeycomb duct (5) are located the axle center department of sheath (4), the quantity of heat dissipation pipe (6) is a plurality of, a plurality of heat dissipation pipe (6) are followed central honeycomb duct (5) length direction evenly fixed connection is in on the inner wall of central honeycomb duct (5), just heat dissipation pipe (6) inside is filled with the coolant liquid, separation subassembly evenly annular distributes in the outside of central honeycomb duct (5) is used for a plurality of conductor (1) separate, the quantity of seal assembly is two seal assembly installs respectively the both ends of sheath (4).
  2. 2. The special cable for the charging pile of the new energy automobile according to claim 1, wherein the separation assembly comprises a separation plate (7), a support plate (8) and a connecting pipe (9), the side view of the separation plate (7) is of a U-shaped design, the length of the separation plate (7) is matched with the length of the sheath (4), two ends of the separation plate (7) in the side view direction incline towards each other, the middle protruding part of the separation plate (7) is opposite to and attached to the central flow guide pipe (5), the insulating sleeve (2) of the conductor (1) can be attached to the side surface of the separation plate (7), fillers are uniformly arranged between the outer side of the separation plate (7) and the insulating sleeve (2) of the conductor (1), the plurality of support plates (8) are uniformly arranged on the inner side of the separation plate (7) and used for supporting the inner side of the separation plate (7), a plurality of connecting holes are uniformly distributed on the support plate (8), the number of the connecting pipe (9) is equal to the number of the flow guide pipes (9), and the connecting pipe (9) are uniformly connected with the center of the separation plate (5).
  3. 3. The special cable for the charging pile of the new energy automobile according to claim 2, wherein the sealing assembly comprises an end cover (10), a drying pipe (11), a rubber plug (12) and a sealing cover (13), the end cover (10) is detachably sleeved at the end part of the sheath (4), a plurality of jacks corresponding to the conductors (1) one by one are formed in the end cover (10) in a penetrating mode, the conductors (1) are respectively inserted into the jacks in a penetrating mode, the drying pipe (11) is inserted into the center of the end cover (10), the drying pipe (11) is internally filled with a solid drying agent, one end of the drying pipe (11) located in the sheath (4) is of a closed design, one end of the drying pipe (11) is inserted into the central guide pipe (5), the rubber plug (12) is of an annular shape, the outer side of the rubber plug (12) is in interference fit with the inner wall of the central guide pipe (5), and the drying pipe (11) is provided with one end of the sealing cover (13) in a detachable mode, and the sealing cover (13) is arranged at one end of the sealing cover.
  4. 4. The special cable for the charging pile of the new energy automobile according to claim 3, wherein the opening edge of the end cover (10) is fixedly connected with a sealing sleeve (14) coaxial with the opening edge, the sealing sleeve (14) has elasticity, and the inner wall of the sealing sleeve (14) can be attached to the outer wall of the sheath (4).
  5. 5. The special cable for the charging pile of the new energy automobile according to claim 4, wherein arc-shaped protrusions (15) matched with the length of the arc-shaped protrusions are annularly distributed on the inner wall of the sheath (4), and the middle parts of the arc-shaped protrusions (15) protrude towards the direction close to the central flow guide pipe (5) and are attached to the wrapping belt (3).
  6. 6. The special cable for the new energy automobile charging pile according to claim 5, wherein the closed end of the drying pipe (11) is provided with a heat conducting component, the heat conducting component comprises a heat conducting column (16), a plurality of heat conducting pipes (17) and heat conducting rods (18), the heat conducting column (16) is of a hollow design, the heat conducting column (16) is inserted into the central guide pipe (5), the outer side surface of the heat conducting column (16) is attached to the plurality of heat radiating pipes (6), the heat conducting pipes (17) are vertically and fixedly connected to the position, close to the axis of one end of the drying pipe (11), of the heat conducting column (16), the heat conducting pipes (17) vertically penetrate through the axis of the drying pipe (11), the heat conducting rods (18) are multiple, and the heat conducting rods (18) are uniformly and vertically and fixedly connected to the surface, located on the inner side of the drying pipe (11), of the heat conducting pipes (17).
  7. 7. The special cable for the charging pile of the new energy automobile according to claim 6, wherein one end of the heat conducting column (16) far away from the drying pipe (11) is in a conical surface design, and the heat conducting column (16), the heat conducting pipe (17) and the heat conducting rod (18) are all made of high-heat-conductivity metal materials.
  8. 8. The special cable for the charging pile of the new energy automobile according to claim 7, wherein one end of the opening of the drying pipe (11) is fixedly connected with a pressing ring (19), the edge of the pressing ring (19) protrudes towards the direction close to the end cover (10), one side of the pressing ring (19) close to the end cover (10) is provided with a plurality of sealing rings (20) coaxial with the pressing ring (19), and the sealing rings (20) are attached to the surface of the end cover (10).
  9. 9. The special cable for the charging pile of the new energy automobile according to claim 8, wherein a plurality of groups of supporting bars (21) are axially arranged on the outer side of the sheath (4) respectively, the number of each group of supporting bars (21) is multiple, the supporting bars (21) are uniformly distributed on the outer side of the sheath (4), a plurality of supporting rings (22) are arranged between two adjacent groups of supporting bars (21), the supporting rings (22) are uniformly sleeved on the outer side of the sheath (4), and the surface of the outer diameter of the supporting ring (22) is flush with one side, far away from the sheath (4), of the supporting bars (21).
  10. 10. The special cable for the charging pile of the new energy automobile according to claim 9, wherein a U-shaped protrusion (23) is fixedly connected to the outer side surface of the sealing cover (13), and one side of the U-shaped protrusion (23) away from the sealing cover (13) protrudes out of one end of the opening of the drying pipe (11).

Description

New energy automobile fills electric pile special cable Technical Field The invention belongs to the technical field of charging cables, and particularly relates to a special cable for a charging pile of a new energy automobile. Background In recent years, global energy structure transformation is accelerated, and electric automobiles are taken as important carriers for green traffic, so that the market scale of the electric automobiles shows explosive growth. Along with the popularization of electric vehicles, the construction of charging and replacing supporting facilities becomes a core support for industry development, wherein charging piles are used as key equipment for daily energy supplement of the electric vehicles, and the number and coverage range of the charging piles are continuously enlarged. In the use process of the charging pile, the cable is used as a core component for electric energy transmission, and the performance of the cable directly influences the charging efficiency and the safety. Along with the improvement of the battery capacity of the electric automobile, in order to shorten the charging time, a high-power charging pile (such as a direct-current quick charging pile) becomes a main stream, and the charging power is gradually increased to 120kW and 200kW from 60kW at an early stage, and part of the ultra-quick charging pile even reaches more than 480 kW. However, a significant problem with high power charging is that the cable heats up more—according to joule's law, the current passing through the conductor generates heat from the resistance, and the heat is proportional to the square of the current. The traditional structure is adopted in the current electric pile cable that fills, only relies on the sheath to dispel the heat naturally, and radiating efficiency is extremely low, can't satisfy the heat dissipation demand when high-power charges. Excessive temperatures can cause the following problems: the insulation performance is reduced, namely the aging and cracking of the insulation sleeve can be accelerated at a high temperature for a long time, so that the insulation resistance value is reduced, even leakage accidents are caused, and the personal safety and the equipment safety are threatened; the conductor performance is attenuated, namely the conductor resistance is increased due to high temperature, the electric energy loss is increased (namely 'line loss'), the charging efficiency is reduced, the oxidation of the conductor is accelerated, and the service life of the cable is shortened; The potential safety hazard is prominent, if the temperature is continuously increased, combustible materials around the cable can be ignited to cause fire, and the risk is higher especially in the scenes of underground garages, closed charging cabins and the like. Therefore, the heat dissipation defect of the existing charging pile cable becomes a key bottleneck for restricting the popularization of the high-power charging technology, and the development of the special cable for the charging pile of the new energy automobile, which has a high-efficiency heat dissipation structure and can adapt to a high-power charging scene, has important practical significance and market value. Therefore, it is necessary to invent a cable special for a charging pile of a new energy automobile to solve the above problems. Disclosure of Invention The invention provides a special cable for a charging pile of a new energy automobile, aiming at solving one of the problems in the background technology. In order to achieve the purpose, the invention provides the technical scheme that the special cable for the charging pile of the new energy automobile comprises the following components: the electrical conductor is provided with a plurality of conductors, and the number of the conductors is a plurality; The insulating sleeve is uniformly sleeved on the outer side of the conductor; The wrapping belt is uniformly sleeved on the outer sides of the conductors; Sheath cup joints in around the outside of band, and the sheath inboard is provided with and is used for a plurality of radiating heat abstractor is carried out to the conductor, heat abstractor includes central honeycomb duct, heat dissipation pipe, separation subassembly and seal assembly, central honeycomb duct is located the axle center department of sheath, the quantity of heat dissipation pipe is a plurality of, a plurality of heat dissipation pipe is followed central honeycomb duct length direction evenly fixed connection is in on the inner wall of central honeycomb duct, and the inside packing of heat dissipation pipe has the coolant liquid, separation subassembly evenly annular distributes is in the outside of central honeycomb duct is used for a plurality of the conductor separates, the quantity of seal assembly is two, two seal assembly installs respectively the both ends of sheath. Further, the separation subassembly includes division board, backu