CN216849357U - Heavy-current soft charging pile quick-charging external connection cable - Google Patents

Abstract

The utility model discloses a light and soft type of heavy current fills electric pile and fills external connection cable soon, the outer fluoroplastics of the cooling tube of its main heart yearn plays temperature resistant, insulating effect, the foaming polyethylene of inlayer foaming degree 65-85% has both increased the volume of coolant liquid and can also play effectual supporting role, more importantly, when the hollow flexible conductor of preparation main heart yearn, because the resistance to compression of cooling tube improves, so after having carried out grouping beam silk with all conductor silk, can the cooling tube for supporting the formation of stranded conductor again, can the effectual softness that increases the cable, it is installed more easily than the cable of conventional cooling device, the bending radius is little, the current-carrying capacity is big; in addition, the temperature sensing optical fiber is added during the forming of the hollow flexible conductor, so that the flow rate of the cooling liquid can be controlled according to the feedback temperature, and the temperature of the cable is constant; above many-sided effect make cable charge speed greatly promote, and the cable problem of generating heat is greatly improved, effectively alleviates insulating ageing speed, increases cable life, and the product compliance is better.

Description

Heavy-current soft charging pile quick-charging external connection cable

Technical Field

The utility model relates to a new energy automobile technical field especially relates to a heavy current gentle type fills electric pile and fills external connection cable soon.

Background

Along with electric automobile's rise under the big environment, fill electric pile charge speed and tentatively realize to 1 hour quick charge from 8 hours, still can not satisfy user's demand because fill electric pile connecting wire and need satisfy lightly, the compliance is high to the electric current that has restricted the charging cable and the high temperature high fever scheduling problem that produces under the high current state. At present, a charging pile cable mainly adopts a sixth-class circular stranded conductor structure, heating is easily caused to reduce the current-carrying capacity in use, short circuit fire may be caused in serious cases, and a wire gauge needs to be added to achieve a safe current-carrying capacity state, so that the weight and the cost are increased, resources are wasted, a charger is under heavy load, and a cable with the overlarge current-carrying capacity without the wire gauge is urgently needed in the market at present.

In the prior art, there is proposed to design an electric vehicle charging cable with a cooling pipe, for example, a patent with a patent number zl201720377398.x, but the conventional conductor is sleeved outside or twisted with the cooling pipe, but the electric vehicle charging cable has a specific requirement on flexibility, so that in the prior art, although a cable with an extra large current-carrying capacity can be realized without increasing a wire gauge, the prepared cable is not flexible enough, and is not ideal in practical application. In addition, although the current cooling scheme can alleviate the heating problem to a certain extent, the severe change of the cable temperature still has certain influence on the working stability of the cable. In a word, the charging speed of the existing charging cable for the automobile is not enough, the heating problem of the cable cannot be effectively improved, the insulation aging speed cannot be effectively reduced, and the flexibility of the product is not enough.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide the gentle type of heavy current and fill electric pile and fill external connection cable soon.

The utility model provides a technical scheme that its technical problem adopted is: the high-current soft type charging pile quick-charging external connection cable comprises a sheath and a stranded cable positioned in the sheath, wherein the stranded cable comprises a main core wire and various auxiliary core wires, each auxiliary core wire comprises a conventional stranded conductor meeting the requirement of a 6 th conductor and an insulating layer coated outside the conventional stranded conductor, the main core wire comprises a cooling pipe for injecting cooling liquid, a hollow flexible conductor wrapped around the cooling pipe and an insulating layer coated outside the hollow flexible conductor, the hollow flexible conductor is obtained by carrying out stranded wire production on a plurality of strands of stranded wire conductors and temperature-sensing optical fibers together by a frame stranding machine after the cooling pipe is placed on a central layer for supporting, each stranded wire conductor is formed by adding an aramid fiber reinforced structure in a group of conductors and carrying out stranded wire forming on the stranded wire machine, and the number of conductor wires in the hollow flexible conductor and the diameter of a single conductor wire meet the requirement of the 6 th conductor, the cooling pipe is obtained by double-layer co-extrusion of outer-layer fluoroplastic and inner-layer polyethylene with the foaming degree of 65-85% by adopting an extruder.

Preferably, the thickness of the outer fluoroplastic is 1.0 +/-0.2 mm, and the outer diameter is 15 +/-0.3 mm; the thickness of the polyethylene with the inner layer foaming degree of 65-85% is 1.5mm plus or minus 0.2 mm.

Preferably, each of the auxiliary core wires in the stranded cable includes eight signal wires, two control wires, one ground wire and two low-voltage auxiliary power wires, and the two main core wires in the stranded cable.

Preferably, the stranded cable is formed by cabling two main core wires, eight cabled signal wires, two cabled control wires, a ground wire and two low-voltage auxiliary power wires together.

Preferably, the eight cabled signal wires are filled with filling ropes, and the belting layer and the shielding layer are sequentially wrapped outside the eight cabled signal wires; two control lines of the cabling are cabled together with two filling strips and are filled by adopting filling ropes, a belting layer and a shielding layer are sequentially wrapped outside the two control lines and the two filling strips after the cabling, and the filling strips are of a solid structure extruded by flexible PVC.

Preferably, eight cabled signal wires and two cabled control wires are located on the same side of the two main core wires, the grounding wire and the two low-voltage auxiliary power wires are located on the other same side of the two main core wires, and the grounding wire is located between the two low-voltage auxiliary power wires.

Preferably, the filling rope is made of aramid fiber.

Preferably, the wrapping layer is made of non-woven fabrics.

Preferably, the sheath is made of TPU.

Preferably, the insulation layer is insulated with radiation cross-linked polyolefin.

The utility model discloses a soft type of heavy current fills electric pile and fills external connection cable soon has following beneficial effect: on one hand, the outer fluoroplastic in the cooling pipe can play a role in temperature resistance and insulation, the inner foamed polyethylene plays a role in supporting, the whole cooling pipe can realize compression resistance, temperature resistance and insulation, and when the cooling pipe is used, the foamed polyethylene with the inner foaming degree of 65-85% not only increases the volume of cooling liquid, but also can play an effective supporting role, and more importantly, the compression resistance of the cooling pipe is improved so as to facilitate subsequent hollow flexible conductor stranding and forming; secondly, the number of the conductor wires and the diameter of a single conductor wire are determined according to the 6 th conductor requirement when the hollow flexible conductor is prepared, and the compression resistance of the cooling pipe is improved, so that after all the conductor wires are bundled in groups, the cooling pipe can be used for supporting and forming a stranded wire, the flexibility of the cable can be effectively improved, and the cable is easier to install than the cable of a conventional cooling device, small in bending radius and large in current-carrying capacity; in the third aspect, the temperature sensing optical fiber is added when the hollow flexible conductor is molded, the temperature is sensed by the temperature sensing optical fiber and then is transmitted to the externally connected controller, and the controller can control the flow rate of the cooling liquid according to the feedback temperature, so that the temperature of the cable is constant, the heating temperature of the product caused by current is reduced, the cable can keep the state of super-large current at low temperature, and the insulating layer can be prevented from aging, thereby achieving the effect of prolonging the service life; above three aspect influences each other jointly, under the combined action of this three aspect, the utility model discloses a cable charging speed obtains greatly promoting, and the cable problem of generating heat obtains very big improvement, thereby can effectively alleviate the life of insulating ageing speed increase cable, and the product compliance is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:

fig. 1 is the utility model discloses the gentle type of heavy current fills electric pile and fills external connection cable's schematic structure soon.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various components, but the components are not limited by the terms. These terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named as a second component, and similarly, a second component may also be named as a first component, without departing from the scope of the present invention.

The utility model discloses general thinking is: on one hand, the cooling pipe is made of polyethylene with 65-85% of inner foaming degree and outer fluoroplastic, the outer fluoroplastic can play a role in temperature resistance and insulation, the inner foamed polyethylene plays a role in supporting, the whole cooling pipe can realize compression resistance, temperature resistance and insulation, and the foamed polyethylene with 65-85% of inner foaming degree not only increases the volume of cooling liquid but also can play an effective supporting role when in use, and more importantly, the compression resistance of the cooling pipe is improved so as to facilitate the subsequent hollow flexible conductor stranding and forming; in the second aspect, the hollow flexible conductor meets the requirements of the 6 th conductor, and the compression resistance of the cooling pipe is improved, so that after all conductor wires are bundled in groups, the cooling pipe can be used for supporting and forming a stranded wire, and the flexibility of the cable can be effectively improved, and the cable is easier to mount, small in bending radius and large in current-carrying capacity than the cable of a conventional cooling device; in the third aspect, the temperature sensing optical fiber is added during the forming of the hollow flexible conductor, the temperature is sensed by the temperature sensing optical fiber and then transmitted to the controller connected with the outside, and the controller can control the flow rate of the cooling liquid according to the fed back temperature, so that the temperature of the cable is constant, the heating temperature of the product due to current is reduced, the cable can keep the state of super-high current at low temperature, the insulating layer can be prevented from aging, and the effect of prolonging the service life is achieved. Above three aspect influences each other jointly, under the combined action of this three aspect, the utility model discloses a cable charging speed obtains greatly promoting, and the cable problem of generating heat obtains very big improvement, thereby can effectively alleviate the life of insulating ageing speed increase cable, and the product compliance is better.

In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the specific features in the embodiments and examples of the present invention are detailed descriptions of the technical solutions of the present application, but not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present invention can be combined with each other without conflict.

Referring to fig. 1, the external connection cable for fast charging of the large-current light and flexible charging pile of the present embodiment includes a sheath 27 and a stranded cable inside the sheath 27.

Wherein the stranded cable includes a main core and various auxiliary cores. Each auxiliary core wire in the stranded cable comprises eight signal wires, two control wires, one grounding wire and two low-voltage auxiliary power wires, and the stranded cable comprises two main core wires. More specifically, the stranded cable is formed by cabling two main core wires, eight cabled signal wires, two cabled control wires, a grounding wire and two low-voltage auxiliary power wires together. And the eight cabled signal wires are filled by adopting the filling ropes 26 during cabling, two control wires of the cabling are cabled together with the two filling strips 23, and the filling ropes 26 are used for filling during cabling. The filling strip 23 is a solid structure extruded by flexible PVC, and the filling rope 26 is made of aramid fiber.

Two main core line sets up side by side, and 8 fonts are constituteed jointly to both cross-sections, eight signal lines of stranding in the stranded cable, two control lines of stranding all are located two the homonymy (for example the upside of 8 fonts in the picture) of main core line, earth connection and two low pressure auxiliary power lines all are located two another homonymy (for example the downside of 8 fonts in the picture) of main core line, and the earth connection is located two between the low pressure auxiliary power line.

Wherein the auxiliary core wire comprises a conventional stranded conductor 21 meeting the requirement of the 6 th conductor and an insulating layer 22 coated outside the conventional stranded conductor 21. Specifically, the eight cabled signal lines are filled with filling ropes 26, and the wrapping tape layer 24 and the shielding layer 25 are sequentially wrapped outside the eight cabled signal lines. The two control lines and the two filling strips 23 are cabled, the two control lines and the two filling strips 23 of the cabled lines are filled by filling ropes 26, and the belting layer and the shielding layer 25 are sequentially wrapped outside the two control lines and the two filling strips 23 after the cabled lines are cabled.

The main core wire comprises a cooling pipe for injecting cooling liquid, a hollow flexible conductor 14 which is wrapped around the cooling pipe and meets the requirement of the 6 th conductor, and an insulating layer 15 which is wrapped outside the hollow flexible conductor 14.

Specifically, the hollow flexible conductor 14 is obtained by carrying out stranded wire production on a plurality of strands of strand conductors and the temperature-sensitive optical fiber 13 together by a frame stranding machine after the cooling pipe is placed at the center and supported, each strand of strand conductor is formed by adding an aramid fiber reinforcing structure in a group of conductors and stranding the strand conductors in the strand machine, the number of the conductor wires in the hollow flexible conductor 14 and the diameter of a single conductor wire meet the requirement of the 6 th conductor, the cooling pipe is obtained by carrying out double-layer co-extrusion on an outer-layer fluoroplastic 12 and a polyethylene 11 with the inner-layer foaming degree of 65-85% by adopting an extruder, namely the cooling pipe is a double-layer pipe with the outer-layer fluoroplastic 12 and the polyethylene 11 with the inner-layer foaming degree of 65-85%. The thickness of the outer fluoroplastic 12 is controlled to be 1.0 +/-0.2 mm, and the outer diameter is controlled to be 15 +/-0.3 mm; the thickness of the polyethylene 11 with the inner layer foaming degree of 65-85 percent is controlled to be 1.5 +/-0.2 mm.

The specific structure of the external connection cable for quick charging is described in detail below with reference to the preparation method of the large-current light and flexible charging pile quick charging external connection cable shown in fig. 1, and the preparation method is as follows:

s101: a cooling pipe with an outer layer of fluoroplastic 12 and an inner layer of polyethylene 11 with the foaming degree of 65-85% is prepared for a main core wire through which a large current passes.

For example, an extruder is used for carrying out double-layer coextrusion of the outer fluoroplastic 12 and the polyethylene 11 with the inner foaming degree of 65-85 percent to obtain the cooling pipe of the polyethylene 11 with the inner foaming degree of 65-85 percent and the outer fluoroplastic 12. The outer fluoroplastic 12 can play a role in temperature resistance and insulation, and the inner foamed polyethylene 11 plays a role in supporting. Specifically, a first extruder is used for extruding the outer fluoroplastic 12, the temperature of the first extruder is controlled to be 280 +/-10 ℃ in a feeding section, 320 +/-10 ℃ in a compression section, 370 +/-10 ℃ in a metering section and 385 +/-10 ℃ in a die head (in the embodiment, the temperature of the feeding section is controlled to be 280 ℃, the temperature of the compression section is controlled to be 320 ℃, the temperature of the metering section is controlled to be 370 ℃ and the temperature of the die head is controlled to be 385 ℃), the thickness of the fluoroplastic 12 is controlled to be 1.0 +/-0.2 mm, the outer diameter is controlled to be 15 +/-0.3 mm, and the eccentricity is less than or equal to 5%. The polyethylene 11 with the inner layer foaming degree of 65-85% (70% is specifically adopted in the embodiment) is extruded by a second extruder, the temperature of the second extruder is controlled at 100 +/-5 ℃ of the feeding section, 120 +/-5 ℃ of the compression section, 145 +/-5 ℃ of the metering section and 150 +/-5 ℃ of the die head (specifically adopted in the embodiment are 100 ℃ of the feeding section, 120 ℃ of the compression section, 145 ℃ of the metering section and 150 ℃ of the die head), the thickness of the foamed polyethylene 11 is controlled at 1.5 +/-0.2 mm, and the eccentricity is less than or equal to 5%. The extrusion speed of the first extruder and the second extruder is 20 m/min.

S102: a hollow flexible conductor 14 is prepared for the main core wire and a corresponding conventional stranded conductor 21 meeting the requirements of the type 6 conductor is prepared for each of the auxiliary core wires.

The auxiliary core wire is a stranded conductor generated by a conductor wire and an aramid fiber reinforced structure stranded wire, and meets the 6 th conductor requirement in GB/T3956.

Wherein the preparation of the hollow flexible conductor 14 comprises:

1) determining the number of conductor wires (soft copper wires) and the diameter of a single conductor wire according to the requirements of the 6 th conductor, and dividing all the conductor wires into a plurality of groups;

2) firstly, adding an aramid fiber reinforcing structure in each group of conductors, and performing wire binding on a wire binding machine to form a wire binding conductor, wherein the wire binding pitch ratio of the wire binding machine during wire binding is not more than 16 times of the diameter of the wire binding conductor.

3) Then the cooling pipe is placed in the center for supporting, all the bundle wire conductors and the temperature sensing optical fibers 13 are stranded together by adopting a frame stranding machine to form a hollow flexible conductor 14 wrapping the cooling pipe, so that the roundness of the conductor can be effectively controlled to be not less than 10%. The strand pitch ratio of the frame stranding machine during strand production does not exceed 12 times of the diameter of the hollow flexible conductor.

The temperature sensing optical fiber 13 is used for being connected with a charging pile controller, and the controller is used for controlling the flow rate of the cooling liquid in the cooling pipe according to the temperature fed back by the temperature sensing optical fiber 13 so as to keep the fed-back temperature constant. For example, a constant temperature range (for example, keeping the temperature within 5 ± 3 ℃ in winter and keeping the temperature within 15 ± 3 ℃ in summer) to be maintained by the cooling liquid may be set in advance in the controller, and then the controller compares the fed-back temperature with the set temperature range in real time, and if the fed-back temperature is lower than the set temperature range, the flow rate of the cooling liquid in the cooling pipe is controlled to be reduced; if the temperature fed back is higher than the set temperature range, the flow rate of the cooling liquid in the cooling pipe is controlled to be increased.

S103: the main core wire is obtained by preparing an insulating layer outside the hollow flexible conductor 14, and the auxiliary core wire is obtained by preparing an insulating layer outside the various conventional stranded conductors 21.

The insulating layer can be made of radiation cross-linked polyolefin with the temperature of 125 ℃. When the insulating layer is prepared, an extruder is adopted for production, the temperature of the equipment is controlled to 147 +/-5 ℃ of the feeding section, 156 +/-5 ℃ of the compression section, 160 +/-5 ℃ of the metering section and 160 +/-5 ℃ of the die head (in the embodiment, 147 ℃ of the feeding section, 156 ℃ of the compression section, 160 ℃ of the metering section and 160 ℃ of the die head), the speed is 10 m/min, the insulating layer is cooled by a water tank, the integrity of the insulating layer is verified by a spark machine, the non-roundness and the eccentricity are controlled to be less than or equal to 10% by a thickness gauge and an outer diameter tester, the manufactured core wire needs to enter irradiation equipment for irradiation, the linear insulating material is changed into a net structure after irradiation, and the crosslinking performance of the insulating layer is improved.

S104: cabling the main core wire and various auxiliary core wires to obtain a stranded cable wire;

the method specifically comprises the following two steps:

1) and cabling the auxiliary core wires with the number larger than one according to the corresponding number, wherein the cabling pitch ratio does not exceed 16 times of the cabling diameter. The method specifically comprises the following steps: selecting eight signal wires for cabling manufacture, filling the eight signal wires by using filling ropes 26 during cabling, wrapping a wrapping tape layer 24 after cabling, and wrapping a shielding layer 25 outside the wrapping tape layer 24; and selecting two control wires and two filling strips 23 for cabling manufacture, filling the control wires and the filling strips with filling ropes 26 during cabling, wrapping the belting layer 24 after cabling, and wrapping the shielding layer 25 outside the belting layer 24.

The filling strip 23 is a solid structure extruded by flexible PVC, and the filling rope 26 is made of aramid fiber. The wrapping layer 24 is made of non-woven fabric.

2) According to the manufactured two main core wires (2 strands in total), the auxiliary core wires (5 strands in total, namely 1 strand of a grounding wire, 2 strands of a low-voltage auxiliary power wire, 1 strand of eight signal wires of a cabling, 1 strand of two control wires of the cabling) and 7 strands in total, cabling is performed according to the corresponding structure of a required cable (specifically, the signal wires and the control wires are positioned on the same sides of the two main core wires, the grounding wire and the two low-voltage auxiliary power wires are positioned on the other same side of the two main core wires, and the grounding wire is positioned between the two low-voltage auxiliary power wires), a filling rope 26 is added at a cabling gap for filling, a belt is adopted for fastening after cabling, and the cabling pitch ratio is not more than 16 times of cabling diameter.

In the cabling step, the equipment adopts the cabling equipment with the functions of full back-twist and active paying-off, so that the cable can be effectively prevented from being pre-twisted after cabling, and the flexibility of the cable is kept.

S105: a sheath 27 is prepared that surrounds the stranded cable.

The production is carried out by adopting a sheath extruder, and the TPU material has the excellent characteristics of light weight, high flexibility, wear resistance, ultraviolet resistance, water resistance, low temperature resistance, corrosion resistance and the like.

In the above embodiment, the cooling pipe composed of the inner foamed polyethylene 11 and the fluoroplastic 12 has multiple functions of compression resistance, facilitating twisting and forming of the conductor, temperature resistance and insulation, the temperature-sensitive optical fiber 13 can transmit the temperature of the conductor to the external controller in real time, the flow rate of the cooling liquid is controlled by analyzing the controller, the conductor 14 is in a constant temperature state, the current of the main core wire is effectively increased at the constant temperature, and then the insulation layer 15 can be effectively prevented from aging at the constant temperature state, so as to achieve the effect of prolonging the service life, other control, grounding, induction and other functions of the charging pile can be realized by matching with the conductor 21, the insulation layer 22, the filling strip 23 and the shielding layer 25, the cable is round and tensile by using the temperature-resistant and tensile aramid fiber filling rope 26, the cable structure is kept stable by using the light non-woven fabric wrapping belt 24, and finally, the light weight, high flexibility, wear resistance, ultraviolet resistance, waterproof performance, water resistance, and insulation, And the low-temperature-resistant and corrosion-resistant TPU sheath 27 is subjected to coating molding.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (10)

1. The utility model provides a light type of heavy current fills electric pile external connection cable that fills soon which characterized in that, includes the sheath and is located stranded cable in the sheath, stranded cable includes main heart yearn and multiple supplementary heart yearn, supplementary heart yearn includes the conventional stranded conductor who accords with 6 th conductor requirement and wraps in the insulating layer outside the conventional stranded conductor, main heart yearn includes the cooling tube that is used for pouring into the coolant liquid, wraps around the hollow flexible conductor of cooling tube and wraps in the insulating layer outside the hollow flexible conductor, the hollow flexible conductor is that the center layer is placed the cooling tube and is supported the back and is carried out stranded conductor production with a plurality of strand silk conductors and temperature sensing optic fibre together by the frame winch and obtain, each strand silk conductor is carried out the bundle silk by increasing aramid fiber reinforced structure in a set of conductor and is formed at the bundle silk machine, and the conductor silk number in the hollow flexible conductor and the diameter of single conductor silk accord with 6 th conductor requirement, the cooling pipe is a double-layer pipe with an outer layer of fluoroplastic and an inner layer of polyethylene with the foaming degree of 65-85%.

2. The quick-charging external connection cable for the large-current light and flexible charging pile according to claim 1, wherein the thickness of the outer fluoroplastic is 1.0 +/-0.2 mm, and the outer diameter is 15 +/-0.3 mm; the thickness of the polyethylene with the inner layer foaming degree of 65-85% is 1.5mm plus or minus 0.2 mm.

3. The high-current light-flexible charging pile quick-charging external connection cable according to claim 1, wherein the multiple auxiliary core wires in the stranded cable comprise eight cabled signal wires, two cabled control wires, one ground wire and two low-voltage auxiliary power wires, and the stranded cable comprises two main core wires.

4. The high-current soft type charging pile quick-charging external connection cable according to claim 3, wherein the stranded cable is formed by cabling two main core wires, eight cabled signal wires, two cabled control wires, a ground wire and two low-voltage auxiliary power wires together.

5. The high-current soft charging pile quick-charging external connecting cable according to claim 4, characterized in that eight cabled signal wires are filled with filling ropes, and a wrapping tape layer and a shielding layer are sequentially wrapped outside the cabled signal wires; two control lines of the cabling are cabled together with two filling strips and are filled by adopting filling ropes, a belting layer and a shielding layer are sequentially wrapped outside the two control lines and the two filling strips after the cabling, and the filling strips are of a solid structure extruded by flexible PVC.

6. The high-current light-flexible charging pile quick-charging external connection cable according to claim 5, wherein eight cabled signal wires and two cabled control wires are located on the same side of the two main core wires, the grounding wire and the two low-voltage auxiliary power wires are located on the other same side of the two main core wires, and the grounding wire is located between the two low-voltage auxiliary power wires.

7. The high-current light-flexible charging pile quick-charging external connection cable according to claim 5, wherein the filling rope is made of aramid fiber.

8. The external connection cable is filled soon to light flexible type of heavy current electric pile of claim 5, characterized in that, band layer is the non-woven fabrics material.

9. The high-current light-flexible charging pile quick-charging external connection cable according to claim 5, wherein the sheath is made of TPU.

10. The quick-charging external connection cable for the large-current light-flexible charging pile according to claim 5, wherein the insulating layer is insulated by irradiation cross-linked polyolefin.

Images