Charging cable for new energy automobile and preparation method thereof

Abstract

The invention provides a charging cable for a new energy automobile and a preparation method thereof. The charging cable for the new energy automobile comprises a cable skin; the tensile layer is arranged on the inner surface of the cable skin, a cooling copper pipe is wound on the inner surface of the tensile layer, a heat conduction layer is arranged on the inner surface of the cooling copper pipe, and a filling layer is arranged on the inner surface of the heat conduction layer; and the plurality of shielding layers are arranged in the filling layer, and the inner surface of each shielding layer is provided with a second insulating layer. According to the charging cable for the new energy automobile, the cooling copper pipe is spirally installed between the filling layer and the cable skin through the design, the heat dissipation effect is improved through the heat conduction layer, meanwhile, the toughness of the cable is improved through the tensile layer, the probability that the cooling copper pipe is damaged by a hand buggy or bending is reduced, cooling liquid is filled in the cooling copper pipe, and the cooling effect is improved. The heat dissipation efficiency of the cable during operation can be improved, and the service life of the cable can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air ventilation, and in particular to a charging cable for a new energy vehicle and a preparation method thereof. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source or use conventional automotive fuels, adopt new on-board power devices, and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures.

[0003] New energy vehicles need to replenish electricity during use, so they need to use new energy vehicle chargers made of cables. During the cable manufacturing process, multiple single-wire conductors will be twisted together in a certain direction and rules to form an overall twisted wire core. Then a layer of insulating material is put on the outer surface of the twisted wire core, and a filling layer is set between the twisted wire cores and between the insulating materials.

[0004] The cable will generate heat during use. Although some high-temperature resistant materials are used in the cable manufacturing process, if the heat generated by the cable is not dissipated in time, the internal twisted wire core will work in a high-temperature environment for a long time, which will reduce the service life of the twisted wire core.

[0005] Therefore, it is necessary to provide a charging cable for new energy vehicles and a preparation method thereof to solve the above technical problems. Summary of the invention

[0006] The present invention provides a charging cable for new energy vehicles and a preparation method thereof, which solves the problem that a large amount of heat will be generated during use of the charging cable for new energy vehicles. If the heat is not dissipated in time, the twisted wire core will be exposed to a high temperature environment for a long time, thereby reducing the service life of the twisted wire core.

[0007] In order to solve the above technical problems, the present invention provides a charging cable for new energy vehicles, comprising: a cable sheath;

[0008] A tensile layer, wherein the tensile layer is arranged on the inner surface of the cable skin, a cooling copper tube is wound around the inner surface of the tensile layer, a heat-conducting layer is arranged on the inner surface of the cooling copper tube, and a filling layer is arranged on the inner surface of the heat-conducting layer;

[0009] A plurality of shielding layers are arranged inside the filling layer, a second insulating layer is arranged on the inner surface of each shielding layer, and a wire core is arranged on the inner surface of each second insulating layer.

[0010] The cooling copper tube is wound around the inner surface of the tensile layer to form a spiral cylinder. The heat conducting layer is located on the inner surface of the spiral cylinder formed by the cooling copper tube. For details, please refer to Figure 1The number of wire cores depends on the charging requirements. The shielding layer can prevent mutual influence between currents. The second insulating layer is to prevent short circuit between wire cores. The tensile layer increases the tensile resistance of the cable and can provide certain protection for the wire core and the cooling copper tube. The thermal conductive layer can increase the thermal conductivity. The cooling liquid can be injected into the cooling copper tube. The tensile layer is a polyimide film and the thermal conductive layer is an aluminum film.

[0011] Preferably, injection heads are installed at both ends of the cooling copper tube, and the cooling copper tube is a hollow tube made of copper.

[0012] The injection head has a sealing plug, which can seal both ends after injecting cooling liquid into the cooling copper tube.

[0013] Preferably, a first insulating layer is arranged inside the filling layer, and a signal line is arranged on the inner surface of the first insulating layer.

[0014] The signal line is used to transmit signals. The first insulating layer and the second insulating layer are made of the same material and can be made of asbestos or mica.

[0015] A method for preparing a charging cable for a new energy vehicle, comprising the charging cable for a new energy vehicle, wherein the preparation method for the charging cable for a new energy vehicle requires use during the preparation of the charging cable for a new energy vehicle, and comprises the following steps:

[0016] S1: First, use a winding device to wrap a shielding layer around the outer surface of each wire core with a second insulation layer, then arrange multiple wound wire cores according to corresponding positions, and fill a filling layer between each wire core wrapped with a shielding layer;

[0017] S2: Then, the whole roll of the heat-conducting layer is installed on the sleeve rod by using the limiting disk, and one end of the heat-conducting layer is wound around the outer surface of the filling layer on the wire core, and then the driving motor is started to use the driving wheel to drive the winding ring between the four limiting wheels to rotate, so that the heat-conducting layer can be wound around the outer surface of the filling layer, and at the same time, the rolled cooling copper tube is installed on the first winding structure in the same way, and the cooling copper tube is evenly wound around the outer surface of the heat-conducting layer by using the winding ring on the first winding structure. Before the cooling copper tube is wound, the rolled tensile layer needs to be installed on the second winding structure in the same way, and the tensile layer is wound around the outer surface of the ring formed by winding the cooling copper tube by using the winding ring on the second winding structure;

[0018] S3: After winding is completed, the wound wire core is transported to the extruder by using the conveying structure. The cable sheath material heated by the extruder is extruded through the outlet of the extruder so that the liquefied cable sheath is wrapped around the outer surface of the tensile layer. Then, the cable sheath is cooled by using a cooling pool. After the cooling is completed, the winding structure can be used to wind up the produced cable.

[0019] Preferably, the winding equipment used in the preparation process of the charging cable for new energy vehicles includes: a chassis;

[0020] A winding table, the winding table is fixedly connected to the top of the base frame, the top of the winding table is fixedly connected to a support plate, one side of the support plate near the front and back sides is rotatably connected to four limiting wheels through a rotating bolt, a winding ring is arranged between the four limiting wheels, a driving motor is installed at the other side of the support plate near the bottom, a driving wheel is installed at the output end of the driving motor, a first winding structure is installed at the top of the winding table near the middle, and a second winding structure is installed at the top of the winding table near the other side.

[0021] The driving wheel contacts the outer surface of the winding ring, and the four limiting wheels also contact the outer surface of the winding ring. The support plate and the winding ring are provided with openings for the cable to pass through. Figure 3 The structures on the first winding structure and the second winding structure are the same, both of which are structures on the support plate. The structure on the support plate, the first winding structure and the second winding structure are wound with the thermal conductive layer, the cooling copper tube and the tensile layer in sequence. The wire core with the filling layer passes through the support plate and the winding ring to wind the thermal conductive layer, the cooling copper tube and the tensile layer in sequence.

[0022] Preferably, a mounting plate is installed at one end of the winding ring, a mounting bolt is fixedly connected to the other side of the mounting plate, a sleeve rod is fixedly connected to the other end of the mounting bolt, and a limit plate is installed at the other end of the sleeve rod.

[0023] The coil wound with the heat-conducting layer, the tensile layer and the cooling copper tube is put on the sleeve rod and fixed by the limit plate. It can be wound on the cable as the winding ring rotates.

[0024] Preferably, a conveying structure is installed at the top of the winding table at the other side, and the conveying structure includes a support frame, and two conveying frames are installed on the top of the support frame, and the front side of one of the conveying frames is rotatably connected to a plurality of driven guide wheels.

[0025] The adjacent sides of the two conveying racks are each provided with openings for installing a driven guide wheel and a driving guide wheel.

[0026] Preferably, a mounting shell with air holes is installed on the front of the other conveying rack, a driving motor is installed inside the mounting shell, a transmission shell is installed on the top of the other conveying rack, and a plurality of driving guide wheels are installed on the back of the other conveying rack.

[0027] A transmission structure is installed inside the transmission housing, which can synchronously drive multiple driving guide wheels to rotate. The output end of the driving motor can be connected to one of the gears inside the transmission housing by alternating chains and gears.

[0028] Preferably, a control box with a door is installed on one side of the base frame, a control switch is installed on the front of the winding table through a mounting base, and a protective shell with heat dissipation holes is installed on the other side of the support plate.

[0029] A power switch is installed inside the control box, a lock is arranged on the box door, and a protective shell is covered on the outer surface of the driving motor.

[0030] Preferably, two mounting brackets are installed on one side of the top of the winding table, and mounting openings are provided on adjacent sides of the two mounting brackets. The interiors of the two mounting openings are rotatably connected to guide wheels via rotating rods.

[0031] The guide wheel serves to limit the position of the cable, but does not affect the normal transmission and winding of the cable.

[0032] Compared with the related art, the charging cable for new energy vehicles and the preparation method thereof provided by the present invention have the following beneficial effects:

[0033] The present invention provides a charging cable for new energy vehicles. In order to increase the heat dissipation effect of the charging cable for the new energy vehicle, a shielding layer is firstly wound on the outer surface of each wire core with a second insulating layer by using a winding device, and then a plurality of wound wire cores are arranged according to corresponding positions, and a filling layer is filled between each wire core wound with the shielding layer, and then the whole roll of the heat-conducting layer is installed on the sleeve rod by using a limiting disk, and one end of the heat-conducting layer is wound on the outer surface of the filling layer on the wire core, and then a driving motor is started to drive the winding ring between four limiting wheels to rotate by using a driving wheel, so that the heat-conducting layer can be wound on the outer surface of the filling layer, and at the same time, a rolled cooling copper tube is installed on the first winding structure in the same way, and the cooling copper tube is evenly wound on the outer surface of the heat-conducting layer by using the winding ring on the first winding structure, and before the cooling copper tube is wound, the rolled tensile strength The second winding structure is installed in the same way as the filling layer, and the winding ring on the second winding structure is used to wind the tensile layer around the outer surface of the ring formed by winding the cooling copper tube. Then, the conveying structure is used to convey the wound wire core to the extruder. The cable sheath material heated by the extruder is extruded through the outlet of the extruder to allow the liquefied cable sheath to be wrapped around the outer surface of the tensile layer. Then, the cable sheath is cooled by the cooling pool. After the cooling is completed, the winding structure can be used to wind up the produced cable. Through this design, the cooling copper tube is spirally installed between the filling layer and the cable sheath, and the heat conductive layer is used to increase the heat dissipation effect. At the same time, the tensile layer is used to increase the toughness of the cable, and the probability of damage to the cooling copper tube due to trolley or bending is reduced. Cooling liquid is filled into the cooling copper tube to improve the heat dissipation efficiency of the cable during operation, which is beneficial to extending the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a charging cable for a new energy vehicle provided by the present invention;

[0035] Figure 2 A schematic structural diagram of a cooling copper tube is provided for the present invention;

[0036] Figure 3 A schematic diagram of the structure of the base frame is provided for the present invention;

[0037] Figure 4 A structural schematic diagram of a conveying structure is provided for the present invention;

[0038] Figure 5 The present invention provides Figure 4 An enlarged view of point A is shown;

[0039] Figure 6 A schematic diagram of the structure of a drive motor is provided for the present invention;

[0040] Figure 7 A structural schematic diagram of a driving motor is provided for the present invention.

[0041] Numbers in the figure: 1. Cable skin, 2. Signal line, 3. First insulation layer, 4. Cooling copper tube, 5. Shielding layer, 6. Wire core, 7. Second insulation layer, 8. Filling layer, 9. Heat conductive layer, 10. Tensile layer, 11. Injection head, 12. Base frame, 13. Winding table, 14. Control box, 15. Box door, 16. Guide wheel, 17. Mounting frame, 18. Mounting port, 19. Rotating rod, 20. Support plate, 21. First winding structure, 22. Second winding structure, 23. Conveying Structure, 231, support frame, 232, mounting shell, 233, transmission shell, 234, driving guide wheel, 235, driven guide wheel, 236, conveying frame, 237, air vent, 238, driving motor, 24, control switch, 25, mounting base, 26, protective shell, 27, heat dissipation hole, 28, rotating bolt, 29, limiting wheel, 30, winding ring, 31, driving wheel, 32, sleeve rod, 33, limiting disk, 34, mounting bolt, 35, mounting plate, 36, driving motor. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 ,in, Figure 1 A schematic diagram of the structure of a charging cable for a new energy vehicle provided by the present invention; Figure 2 A schematic structural diagram of a cooling copper tube is provided for the present invention; Figure 3 A schematic diagram of the structure of the base frame is provided for the present invention; Figure 4 A structural schematic diagram of a conveying structure is provided for the present invention; Figure 5 The present invention provides Figure 4 An enlarged view of point A is shown; Figure 6 A schematic diagram of the structure of a drive motor is provided for the present invention; Figure 7 The present invention provides a schematic diagram of the structure of a driving motor. A charging cable for a new energy vehicle comprises: a cable sheath 1;

[0044] A tensile layer 10, wherein the tensile layer 10 is arranged on the inner surface of the cable skin 1, a cooling copper tube 4 is wound around the inner surface of the tensile layer 10, a heat-conducting layer 9 is arranged on the inner surface of the cooling copper tube 4, and a filling layer 8 is arranged on the inner surface of the heat-conducting layer 9;

[0045] A plurality of shielding layers 5 are arranged inside the filling layer 8 , a second insulating layer 7 is arranged on the inner surface of each shielding layer 5 , and a wire core 6 is arranged on the inner surface of each second insulating layer 7 .

[0046] The cooling copper tube 4 is wound around the inner surface of the tensile layer 10 to form a spiral cylinder. The heat conducting layer 9 is located on the inner surface of the spiral cylinder formed by the cooling copper tube 4. Figure 1 The number of cores 6 is determined according to the charging demand. The shielding layer 5 can prevent the currents from influencing each other. The second insulating layer 7 is to prevent the cores 6 from short circuiting. The tensile layer 10 increases the tensile resistance of the cable and can provide a certain degree of protection for the cores 6 and the cooling copper tube 4. The thermal conductive layer 9 can increase the thermal conductivity. The cooling copper tube 4 can be injected with cooling liquid. The tensile layer 10 is a polyimide film, and the thermal conductive layer 9 is an aluminum film.

[0047] Injection heads 11 are installed at both ends of the cooling copper tube 4, and the cooling copper tube 4 is a hollow tube made of copper.

[0048] The injection head 11 has a sealing plug, which can seal both ends after the cooling liquid is injected into the cooling copper tube 4.

[0049] A first insulating layer 3 is disposed inside the filling layer 8 , and a signal line 2 is disposed on an inner surface of the first insulating layer 3 .

[0050] The signal line 2 is used for transmitting signals. The first insulating layer 3 and the second insulating layer 7 are made of the same material, which may be asbestos or mica.

[0051] A method for preparing a charging cable for a new energy vehicle, comprising the charging cable for a new energy vehicle, wherein the preparation method for the charging cable for a new energy vehicle requires use during the preparation of the charging cable for a new energy vehicle, and comprises the following steps:

[0052] S1: First, a shielding layer 5 is wound around the outer surface of each wire core 6 with a second insulating layer 7 by a winding device, and then a plurality of wound wire cores 6 are arranged according to corresponding positions, and a filling layer 8 is filled between each wire core 6 wound with a shielding layer 5;

[0053] S2: Afterwards, the whole roll of heat-conducting layer 9 is installed on the sleeve rod 32 by means of the limiting disk 33, and one end of the heat-conducting layer 9 is wound around the outer surface of the filling layer 8 on the wire core 6, and then the driving motor 36 is started to use the driving wheel 31 to drive the winding ring 30 between the four limiting wheels 29 to rotate, so that the heat-conducting layer 9 can be wound around the outer surface of the filling layer 8, and at the same time, the rolled cooling copper tube 4 is installed on the first winding structure 21 in the same way, and the cooling copper tube 4 is evenly wound around the outer surface of the heat-conducting layer 9 by means of the winding ring 30 on the first winding structure 21, and before the cooling copper tube 4 is wound, the rolled tensile layer 10 needs to be installed on the second winding structure 22 in the same way, and the tensile layer 10 is wound around the outer surface of the ring formed by winding the cooling copper tube 4 by means of the winding ring 30 on the second winding structure 22;

[0054] S3: After the winding is completed, the wound wire core 6 is transported to the extruder by the conveying structure 23. The cable sheath 1 material heated by the extruder is extruded through the outlet of the extruder so that the liquefied cable sheath 1 is wrapped around the outer surface of the tensile layer 10. The cable sheath 1 is then cooled by the cooling pool. After the cooling is completed, the winding structure can be used to wind up the produced cable.

[0055] The winding device used in the preparation process of the charging cable for new energy vehicles includes: a chassis 12;

[0056] A winding table 13, wherein the winding table 13 is fixedly connected to the top of the base frame 12, a support plate 20 is fixedly connected to the top of the winding table 13, one side of the support plate 20 is rotatably connected to four limiting wheels 29 through a rotating bolt 28 near the front and back sides, a winding ring 30 is arranged between the four limiting wheels 29, a driving motor 36 is installed near the bottom of the other side of the support plate 20, a driving wheel 31 is installed at the output end of the driving motor 36, a first winding structure 21 is installed near the middle of the top of the winding table 13, and a second winding structure 22 is installed near the other side of the top of the winding table 13.

[0057] The driving wheel 31 contacts the outer surface of the winding ring 30, and the four limiting wheels 29 also contact the outer surface of the winding ring 30. The support plate 20 and the winding ring 30 are provided with openings for the cable to pass through. Figure 3The structures of the first winding structure 21 and the second winding structure 22 are the same, and are both structures on the support plate 20. The structure on the support plate 20, the first winding structure 21 and the second winding structure 22 are wound around the thermal conductive layer 9, the cooling copper tube 4 and the tensile layer 10 in sequence. The wire core 6 with the filling layer 8 passes through the support plate 20 and the winding ring 30 to wind the thermal conductive layer 9, the cooling copper tube 4 and the tensile layer 10 in sequence.

[0058] A mounting plate 35 is installed at one end of the winding ring 30 , a mounting bolt 34 is fixedly connected to the other side of the mounting plate 35 , a sleeve rod 32 is fixedly connected to the other end of the mounting bolt 34 , and a limit plate 33 is installed at the other end of the sleeve rod 32 .

[0059] The coil wound with the heat conducting layer 9 , the tensile layer 10 and the cooling copper tube 4 is sleeved on the sleeve rod 32 and fixed by the limit plate 33 , and can be wound on the cable as the winding ring 30 rotates.

[0060] A conveying structure 23 is installed at the top of the winding table 13 at the other side. The conveying structure 23 includes a support frame 231. Two conveying frames 236 are installed on the top of the support frame 231. The front side of one of the conveying frames 236 is rotatably connected to a plurality of driven guide wheels 235.

[0061] The adjacent sides of the two conveying racks 236 are each provided with openings for installing the driven guide wheel 235 and the driving guide wheel 234 .

[0062] A mounting shell 232 with a vent hole 237 is installed on the front of the other conveying rack 236, a driving motor 238 is installed inside the mounting shell 232, a transmission shell 233 is installed on the top of the other conveying rack 236, and a plurality of driving guide wheels 234 are installed on the back of the other conveying rack 236.

[0063] A transmission structure is installed inside the transmission housing 233 that can synchronously drive multiple driving guide wheels 234 to rotate. The output end of the driving motor 238 is connected to one of the gears inside the transmission housing 233 by alternatingly connecting chains and gears.

[0064] A control box 14 with a box door 15 is installed on one side of the base frame 12, a control switch 24 is installed on the front of the winding table 13 through a mounting base 25, and a protective shell 26 with heat dissipation holes 27 is installed on the other side of the support plate 20.

[0065] A power switch is installed inside the control box 14 , a lock is provided on the box door 15 , and the protective shell 26 is sleeved on the outer surface of the driving motor 36 .

[0066] Two mounting brackets 17 are installed on one side of the top of the winding platform 13 , and mounting openings 18 are provided on adjacent sides of the two mounting brackets 17 . The insides of the two mounting openings 18 are rotatably connected to guide wheels 16 via rotating rods 19 .

[0067] The guide wheel 16 serves to limit the position of the cable, but does not affect the normal transportation and winding of the cable.

[0068] The working principle of the charging cable for new energy vehicles and the preparation method thereof provided by the present invention is as follows:

[0069] First, the shielding layer 5 is wound around the outer surface of each wire core 6 with the second insulating layer 7 by using a winding device, and then the multiple wound wire cores 6 are arranged according to corresponding positions, and the filling layer 8 is filled between each wire core 6 wound with the shielding layer 5, and then the whole roll of heat-conducting layer 9 is installed on the sleeve rod 32 by using the limiting disk 33, and one end of the heat-conducting layer 9 is wound around the outer surface of the filling layer 8 on the wire core 6, and then the driving motor 36 is started to use the driving wheel 31 to drive the winding ring 30 between the four limiting wheels 29 to rotate, so that the heat-conducting layer 9 can be wound around the outer surface of the filling layer 8, and at the same time, the rolled cooling copper tube 4 is installed on the first winding structure 21 in the same way, and the first winding structure 21 is used to The winding ring 30 on the cooling copper tube 4 is evenly wound around the outer surface of the heat-conducting layer 9. Before the cooling copper tube 4 is wound, the rolled tensile layer 10 needs to be installed on the second winding structure 22 in the same way, and the winding ring 30 on the second winding structure 22 is used to wind the tensile layer 10 around the outer surface of the ring formed by winding the cooling copper tube 4. Then, the wound wire core 6 is transported to the extruder by the conveying structure 23. The cable sheath 1 material heated by the extruder is extruded through the outlet of the extruder so that the liquefied cable sheath 1 is wrapped around the outer surface of the tensile layer 10. Then, the cable sheath 1 is cooled by the cooling pool. After the cooling is completed, the winding structure can be used to wind up the produced cable.

[0070] Compared with the related art, the charging cable for new energy vehicles and the preparation method thereof provided by the present invention have the following beneficial effects:

[0071] In order to increase the heat dissipation effect of the charging cable for XiNeng Energy vehicles, first, the shielding layer 5 is wound on the outer surface of each wire core 6 with the second insulating layer 7 by using a winding device, and then the multiple wound wire cores 6 are arranged according to the corresponding positions, and the filling layer 8 is filled between each wire core 6 wrapped with the shielding layer 5, and then the whole roll of thermal conductive layer 9 is installed on the sleeve rod 32 by using the limiting disk 33, and one end of the thermal conductive layer 9 is wound on the outer surface of the filling layer 8 on the wire core 6, and then the driving motor 36 is started to use the driving wheel 31 to drive the winding ring 30 between the four limiting wheels 29 to rotate, so that the thermal conductive layer 9 can be wound on the outer surface of the filling layer 8, and at the same time, the rolled cooling copper tube 4 is installed on the first winding structure 21 in the same way, and the cooling copper tube 4 is evenly wound on the outer surface of the thermal conductive layer 9 by using the winding ring 30 on the first winding structure 21. Before the cooling copper tube 4 is wound, the rolled tensile layer 10 needs to be installed The same method is used to install it on the second winding structure 22, and the winding ring 30 on the second winding structure 22 is used to wind the tensile layer 10 on the outer surface of the ring formed by winding the cooling copper tube 4, and then the conveying structure 23 is used to convey the wound wire core 6 to the extruder, and the cable sheath 1 material heated by the extruder is extruded through the outlet of the extruder to allow the liquefied cable sheath 1 to be wrapped on the outer surface of the tensile layer 10, and then the cable sheath 1 is cooled by the cooling pool. After the cooling is completed, the winding structure can be used to wind up the produced cable. Through this design, the cooling copper tube 4 is spirally installed between the filling layer 8 and the cable sheath 1, and the heat conductive layer 9 is used to increase the heat dissipation effect. At the same time, the tensile layer 10 is used to increase the toughness of the cable, and the probability of damage to the cooling copper tube 4 due to hand-pulling or bending is reduced. Cooling liquid is filled in the cooling copper tube 4 to improve the heat dissipation efficiency of the cable during operation, which is beneficial to extend the service life of the cable.

[0072] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A charging cable for new energy vehicles, characterized in that: include: Cable sheath; A tensile layer, wherein the tensile layer is arranged on the inner surface of the cable skin, a cooling copper tube is wound around the inner surface of the tensile layer, a heat-conducting layer is arranged on the inner surface of the cooling copper tube, and a filling layer is arranged on the inner surface of the heat-conducting layer; A plurality of shielding layers are arranged inside the filling layer, a second insulating layer is arranged on the inner surface of each shielding layer, and a wire core is arranged on the inner surface of each second insulating layer.

2. The charging cable for new energy vehicles according to claim 1, characterized in that: Injection heads are installed at both ends of the cooling copper tube, and the cooling copper tube is a hollow tube made of copper.

3. The charging cable for new energy vehicles according to claim 1, characterized in that: A first insulating layer is disposed inside the filling layer, and a signal line is disposed on an inner surface of the first insulating layer.

4. A method for preparing a charging cable for a new energy vehicle, characterized in that: The invention comprises a charging cable for a new energy vehicle as claimed in any one of claims 1 to 3, wherein the preparation method of the charging cable for a new energy vehicle requires use during the preparation of the charging cable for a new energy vehicle, and the preparation method comprises the following steps: S1: First, use a winding device to wrap a shielding layer around the outer surface of each wire core with a second insulation layer, then arrange multiple wound wire cores according to corresponding positions, and fill a filling layer between each wire core wrapped with a shielding layer; S2: Then, the whole roll of heat-conducting layer is installed on the sleeve rod by using the limiting disk, and one end of the heat-conducting layer is wound around the outer surface of the filling layer on the wire core, and then the driving motor is started to use the driving wheel to drive the winding ring between the four limiting wheels to rotate, so that the heat-conducting layer can be wound around the outer surface of the filling layer, and at the same time, the rolled cooling copper tube is installed on the first winding structure in the same way, and the cooling copper tube is evenly wound around the outer surface of the heat-conducting layer by using the winding ring on the first winding structure. Before the cooling copper tube is wound, the rolled tensile layer needs to be installed on the second winding structure in the same way, and the tensile layer is wound around the outer surface of the ring formed by winding the cooling copper tube by using the winding ring on the second winding structure; S3: After winding is completed, the wound wire core is transported to the extruder by using the conveying structure. The cable sheath material heated by the extruder is extruded through the outlet of the extruder so that the liquefied cable sheath is wrapped around the outer surface of the tensile layer. Then, the cable sheath is cooled by using a cooling pool. After the cooling is completed, the winding structure can be used to wind up the produced cable.

5. According to a method for preparing a charging cable for a new energy vehicle, it is characterized in that: Winding equipment used in the preparation of charging cables for new energy vehicles, including: chassis; A winding table, the winding table is fixedly connected to the top of the base frame, the top of the winding table is fixedly connected to a support plate, one side of the support plate near the front and back sides is rotatably connected to four limiting wheels through a rotating bolt, a winding ring is arranged between the four limiting wheels, a driving motor is installed at the other side of the support plate near the bottom, a driving wheel is installed at the output end of the driving motor, a first winding structure is installed at the top of the winding table near the middle, and a second winding structure is installed at the top of the winding table near the other side.

6. The charging cable for new energy vehicles according to claim 5, characterized in that: A mounting plate is installed at one end of the winding ring, a mounting bolt is fixedly connected to the other side of the mounting plate, a sleeve rod is fixedly connected to the other end of the mounting bolt, and a limit plate is installed at the other end of the sleeve rod.

7. The charging cable for new energy vehicles according to claim 5, characterized in that: A conveying structure is installed at the top of the winding table at the other side. The conveying structure includes a support frame. Two conveying frames are installed on the top of the support frame. The front side of one of the conveying frames is rotatably connected to a plurality of driven guide wheels.

8. The charging cable for new energy vehicles according to claim 7, characterized in that: A mounting shell with air holes is installed on the front of another conveying rack, a driving motor is installed inside the mounting shell, a transmission shell is installed on the top of another conveying rack, and a plurality of driving guide wheels are installed on the back of another conveying rack.

9. The charging cable for new energy vehicles according to claim 5, characterized in that: A control box with a door is installed on one side of the base frame, a control switch is installed on the front of the winding table through a mounting base, and a protective shell with heat dissipation holes is installed on the other side of the support plate.

10. The charging cable for new energy vehicles according to claim 5, characterized in that: Two mounting frames are installed at one side of the top of the winding table, and mounting openings are provided on adjacent sides of the two mounting frames. The insides of the two mounting openings are rotatably connected to guide wheels through rotating rods.

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