CN217719055U - Aluminum alloy core direct current fills electric pile cable - Google Patents

Abstract

The utility model discloses an aluminum alloy core direct current fills electric pile cable includes in proper order in the outside-in: the cable comprises an outer sheath, a wrapping layer and cable cores, wherein each cable core comprises a plurality of aluminum alloy power cores, a plurality of signal cores and a plurality of first filling ropes; the signal sinle silk includes a plurality of core, a plurality of second filling rope, insulating band layer, braided shield, aluminium foil band layer and inner sheath, and the core is stranded each other with the second filling rope to wrap up by insulating band layer, braided shield, aluminium foil band layer and inner sheath in proper order. The utility model discloses can save with high costs, reduce weight, can improve bending performance and life simultaneously.

Description

Aluminum alloy core direct current fills electric pile cable

Technical Field

The utility model relates to a charging cable technical field especially relates to an aluminum alloy core direct current fills electric pile cable.

Background

In recent years, with the increase of the holding capacity of electric automobiles, charging piles are more and more appeared in daily life. The electric automobile charging cable is used as a transmission facility for connecting the electric automobile charging device with a charging foundation. When the user charges, often buckle it or drag on the ground, and traditional electric pile cable that fills adopts the copper core conductor, and not only weight is big, the price is high, and the user of being not convenient for moves on the ground and pulls, and the performance of buckling of swaying of cable is poor moreover, the condition of swelling broken string easily appears for cable life is short.

For example, chinese utility model patent, the grant bulletin number is CN206685173U, discloses a multi-functional direct current of electric automobile fills electric pile cable, and it includes main power supply sinle silk, earth core, auxiliary power supply sinle silk, charging connection confirms the sinle silk, safety protection control sinle silk, shielding layer, around covering and restrictive coating, and the conductor is the copper conductor, and the insulating layer comprises the fire-retardant XLPO cable material of irradiation cross-linking low smoke and zero halogen, and the shielding layer is woven by the tinned copper wire and is formed, and the restrictive coating comprises thermoplastic polyurethane TPU material.

For the prior art, the cable adopts a bare copper conductor, so that the cost is high, the weight is heavy, meanwhile, the signal wire adopts a copper conductor, the swinging and bending performance is poor, and the cable inner sheath is directly sleeved on the braided layer, so that the braided burrs are easy to pierce the sheath, and the spark breakdown is caused; in summary, no effective solution is proposed at present how to reduce the cost and weight of the cable, and improve the bending performance and the service life.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide an aluminum alloy core dc charging pile cable, which solves the technical problems of high cost, heavy weight, poor bending performance and short service life of the cable in the prior art.

In order to achieve the technical purpose, the technical scheme of the utility model provide an aluminum alloy core direct current fills electric pile cable, the outside-in includes in proper order: the cable comprises an outer sheath, a wrapping layer and cable cores, wherein each cable core comprises a plurality of aluminum alloy power cores, a plurality of signal cores and a plurality of first filling ropes, and the aluminum alloy power cores, the signal cores and the first filling ropes are mutually twisted; the signal wire core comprises a plurality of cores, a plurality of second filling ropes, an insulating belting layer, a woven shielding layer, an aluminum foil belting layer and an inner sheath, wherein the cores are mutually twisted with the second filling ropes and are sequentially wrapped by the insulating belting layer, the woven shielding layer, the aluminum foil belting layer and the inner sheath.

Further, the core includes aluminum alloy conductor group, a plurality of aramid fiber silk, a plurality of copper foil silk and first TPE insulating layer, aluminum alloy conductor group aramid fiber silk with the copper foil silk intertwists each other and by first TPE insulating layer parcel.

Furthermore, the copper foil wire comprises an anti-bullet wire and a copper sheet wrapped outside the anti-bullet wire.

Furthermore, the cable core further comprises a protective grounding core and an auxiliary power core, wherein the protective grounding core, the auxiliary power core, the aluminum alloy power core, the signal core and the first filling rope are mutually twisted, and the protective grounding core sequentially comprises a protective grounding conductor and a second TPE insulating layer from inside to outside; the auxiliary power supply wire core sequentially comprises an auxiliary power supply wire conductor and a third TPE insulating layer from inside to outside.

Further, aluminum alloy power sinle silk is from inside to outside including many aluminum alloy conductor and fourth TPE insulating layer, many the mutual transposition of aluminum alloy conductor.

Further, the aluminum alloy conductors are divided into at least two groups, and the aluminum alloy conductors in each group are opposite to the aluminum alloy conductors in the adjacent groups in the twisting direction.

Further, the first and second stuffer cords are formed by twisting a polypropylene material.

Further, the insulating tape layer is a PTFE tape.

Further, the braided shielding layer is a tinned alloy braided shielding layer.

Further, the inner sheath and the outer sheath are both plastic elastomer TPE sheaths.

Compared with the prior art, the beneficial effects of the utility model are that: the first filling rope of a plurality of, aluminum alloy power sinle silk, signal sinle silk and the mutual transposition of filling rope, the core twists with the second filling rope each other to by insulating band layer, weave shielding layer, aluminium foil band layer and inner sheath parcel in proper order, through the aforesaid mode of setting up, can save with high costs, reduce weight, can improve bending performance and life simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of an aluminum alloy core dc charging pile cable according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a signal wire core according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a protection ground core according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an auxiliary power core according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an aluminum alloy power core according to an embodiment of the present invention;

in the figure: 1. the cable comprises an outer sheath, 2 degrees of wrapping layers, 3 degrees of cable cores, 31 degrees of aluminum alloy power supply cores, 32 degrees of signal cores, 321 degrees of cores, 3211 degrees of aluminum alloy conductor sets, 3212 degrees of aramid fiber yarns, 3213 degrees of copper foil yarns, 3214 degrees of first TPE insulating layers, 322 degrees of second filling ropes, 323 degrees of insulating wrapping layers, 324 degrees of woven shielding layers, 325 degrees of aluminum foil wrapping layers, 326 degrees of inner sheaths, 33 degrees of first filling ropes, 34 degrees of protective grounding wire cores, 341 degrees of protective grounding wire conductors, 342 degrees of second TPE insulating layers, 35 degrees of auxiliary power supply cores, 351 degrees of auxiliary power supply wire conductors, 352 degrees of third TPE insulating layers.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

As shown in fig. 1-5, the utility model provides an aluminum alloy core dc charging pile cable, including oversheath 1, around covering 2 and cable core 3 that the outside-in overlaps established in proper order, cable core 3 includes a plurality of aluminum alloy power sinle silk 31, a plurality of signal sinle silk 32, a plurality of first packing rope 33, and aluminum alloy power sinle silk 31, signal sinle silk 32 and first packing rope 33 transposition each other;

the signal wire core 32 includes a plurality of core bodies 321, a plurality of second filling ropes 322, an insulating tape covering layer 323, a braided shielding layer 324, an aluminum foil tape covering layer 325 and an inner sheath 326, wherein the core bodies 321 and the second filling ropes 322 are twisted with each other and are sequentially wrapped by the insulating tape covering layer 323, the braided shielding layer 324, the aluminum foil tape covering layer 325 and the inner sheath 326.

In the embodiment, the aluminum alloy power core 31 is adopted in the cable core 3, so that compared with the traditional copper core, the weight is reduced by half and the flexibility is better under the condition of equivalent current-carrying capacity; the first filling rope 33 is adopted in the cable core 3, the second filling rope 322 is adopted in the signal core 32, and the first filling rope and the second filling rope are connected in a twisted mode, so that compared with the traditional filler, the pitch-diameter ratio can be shortened, the round appearance can be ensured, the tensile capacity can be improved, the cable is not deformed in the using process, and the bulging and wire breaking are avoided; in addition, the aluminum foil belting layer 325 and the inner sheath 326 are sequentially sleeved outside the woven shielding layer 324, compared with the traditional woven shielding layer 324 outer extruded sheath, the aluminum foil belting layer 325 can enhance the shielding performance, meanwhile, burrs of the woven shielding layer 324 are prevented from piercing the inner sheath 326, and further the service life of the cable is prolonged.

Optionally, the braided shielding layer 324 is a tinned alloy braided shielding layer, the braiding density reaches more than 85%, the shielding effect is good, the insulation damage is small, and the sensitivity and stability of signal transmission of a client in the using process can be fully guaranteed.

Optionally, the first filling rope 33 and the second filling rope 322 are formed by twisting polypropylene materials, and have the advantages of stable forming and high mechanical strength.

Optionally, the insulating belting layer 323 is a PTFE belting layer, which has the advantages of high insulating property, flame retardance, high temperature resistance, aging resistance, chemical corrosion resistance, no toxicity and the like.

The structure of the core 321 is further defined in order to improve the rocking bending and tensile strength of the signal wire core 32.

Referring to fig. 2, the core 321 includes an aluminum alloy conductor set 3211, a plurality of aramid filaments 3212, a plurality of copper foil filaments 3213, and a first TPE insulating layer 3214, where the aluminum alloy conductor set 3211, the aramid filaments 3212, and the copper foil filaments 3213 are twisted with each other and wrapped by the first TPE insulating layer 3214.

Further, the copper foil wire 3213 includes an anti-elastic wire and a copper sheet wrapped around the anti-elastic wire.

Still further, the aluminum alloy conductor set 3211 is formed by stranding a plurality of class 6 aluminum alloy conductors.

In this embodiment, adopt aluminum alloy conductor group 3211, aramid fiber silk 3212 and copper foil silk 3213 to strand each other for signal core 32 electric conductive property is excellent, and oxidation resistance and pliability are stronger, and wherein copper foil silk 3213 is made by the bullet-proof silk with around the outer copper sheet of bullet-proof silk, compares in traditional polyester fiber's ordinary copper foil silk 3213, and the vertical pulling force that this scheme can bear is bigger, and copper foil silk 3213's the performance of buckling that sways is higher.

It should be noted that the cable core 3 further includes a protective grounding core 34 and an auxiliary power core 35, the protective grounding core 34, the auxiliary power core 35, the aluminum alloy power core 31, the signal core 32 and the first filling rope 33 are twisted with each other, wherein the protective grounding core 34 includes a plurality of protective grounding conductors 341 and a second TPE insulating layer 342 (see fig. 3) in sequence from inside to outside; the auxiliary power core 35 includes a plurality of auxiliary power conductors 351 and a third TPE insulating layer 352 (see fig. 4) in this order from the inside to the outside.

In order to make up for the defect of insufficient conductivity of the aluminum alloy power core 31, the structure of the aluminum alloy power core 31 is further limited.

Referring to fig. 5, the aluminum alloy power supply wire core 31 comprises a plurality of aluminum alloy conductors and a fourth TPE insulating layer from inside to outside, and the plurality of aluminum alloy conductors are twisted with each other; the aluminum alloy conductors are divided into at least two strands, and the twisting direction of the aluminum alloy conductor of each strand is opposite to that of the aluminum alloy conductor between the adjacent strands.

Further, the number of the aluminum alloy conductors is 532, the aluminum alloy conductors are uniformly divided into 7 strands, each strand of the aluminum alloy conductor is stranded in a forward mode, the 7 strands of the aluminum alloy conductor are stranded in a reverse mode, the pitch of the strands is preferably 38-42mm, and the cross section of each strand is 14.9mm²-16.1mm²The diameter of the aluminum alloy conductor is 0.2mm.

Still further, the ground wire protection conductor 341 is made of aluminum alloy conductors 343 in number, which are equally divided into 7 strands, each strand of aluminum alloy conductor is twisted in a forward direction, and the 7 strands of aluminum alloy conductors are twisted in a reverse direction, wherein the pitch of the strands is 30-34mm, and the cross section is 9.5mm²-10.2mm²The diameter of the aluminum alloy conductor is 0.2mm.

Furthermore, the auxiliary power line conductors 351 are made of 84 aluminum alloy conductors, and are uniformly divided into 7 strands, each strand of aluminum alloy conductor is twisted in a forward mode, the 7 strands of aluminum alloy conductors are twisted in a reverse mode, the pitch of the strands is 30-34mm, and the cross section of each strand is 2.27mm²-2.45mm²The diameter of the aluminum alloy conductor is 0.2mm.

In this embodiment, the aluminum alloy conductor, the protective ground wire conductor 341 and the auxiliary power wire conductor 351 are all twisted in a complex twisting manner (forward twisting and reverse twisting), and meanwhile, a compression technique is used, preferably, the compression coefficient reaches 0.93, and the maximum limit of compression is used to make up for the deficiency in the conductivity of the aluminum alloy conductor, so that the outer diameter of the core of the twisted conductor is reduced and the performance of the conductor is improved as a solid conductor.

Optionally, the thickness of the first TPE insulating layer 3214 is 0.42-0.8mm; the thickness of the second TPE insulating layer 342 is 0.8-1.0mm; the thickness of the third TPE insulating layer 352 is 0.62-0.8mm; the thickness of the fourth TPE insulating layer is 0.8-1.0mm.

As an optional implementation manner, the first TPE insulating layer 3214, the second TPE insulating layer 342, the third TPE insulating layer 352 and the fourth TPE insulating layer are all made of thermoplastic elastomer TPE insulating materials resistant to low temperature of-65 ℃ and high temperature of 125 ℃, and the thermoplastic elastomer TPE insulating material has the characteristics of excellent insulating property, good flexibility, light weight, environmental protection, recoverability, long service life, large processing change, flame retardance, oil resistance, corrosion resistance, high mechanical strength, safety in use and the like.

Compared with the prior art, the embodiment of the utility model provides an at least, following effect has:

1. corresponding to the problem that current cable is with high costs, weight is big, and it is poor to improve the performance of buckling simultaneously, aluminum alloy material is chooseed for use to this scheme cable core 3, signal sinle silk 32, protection earth core 34 and auxiliary power sinle silk 35 at least part, and wherein aluminum alloy power sinle silk 31, protection earth core 34 and auxiliary power sinle silk 35's aluminum alloy conductor adopt the mode of compound hank, make it than copper pliability height 30%, the elasticity is than copper 40% low.

Specifically, the bending radius of a general copper cable is 10-20 times of the outer diameter, while the bending radius of the cable is only 7 times of the outer diameter, so that the bending performance is better; the general copper core cable can only bear the dead weight of 2750 meters in length, but the cable can bear the dead weight of 4000 meters in the scheme, obviously, in the cables with the same specification, the dead weight bearing capacity of the aluminum alloy cable is far higher than that of the copper core cable; the scheme selects the tinned alloy braided shielding layer, and compared with the traditional tinned copper wire, the density of the tinned alloy wire is only 37% -40% of that of the tinned copper wire, the length of the tinned alloy wire is 2.45-2.65 times that of a pure copper wire with the same quality and the same diameter, and the production cost is reduced.

2. Corresponding to the short problem of current cable life, this scheme overlaps in proper order outside weaving shielding layer 324 and establishes aluminium foil belting layer 325 and inner sheath 326, compares with the crowded package sheath outward of traditional weaving shielding layer 324, and aluminium foil belting layer 325 can strengthen shielding performance, avoids weaving the burr of shielding layer 324 to pierce through inner sheath 326 simultaneously, and then extension cable life.

In addition, the first TPE insulating layer 3214, the second TPE insulating layer 342, the third TPE insulating layer 352, the fourth TPE insulating layer, the inner sheath 326 and the outer sheath 1 are made of high and low temperature resistant and environment-friendly halogen-free flame retardant thermoplastic elastomer, and the service life of the rubber is five times longer than that of the conventional rubber.

Those not described in detail in this specification are well within the skill of the art.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims (10)

1. The utility model provides an aluminum alloy core direct current fills electric pile cable, outside-in includes in proper order: the cable comprises an outer sheath, a wrapping layer and cable cores, and is characterized in that the cable cores comprise a plurality of aluminum alloy power cores, a plurality of signal cores and a plurality of first filling ropes, wherein the aluminum alloy power cores, the signal cores and the first filling ropes are mutually twisted;

the signal wire core comprises a plurality of cores, a plurality of second filling ropes, an insulating belting layer, a woven shielding layer, an aluminum foil belting layer and an inner sheath, wherein the cores are mutually twisted with the second filling ropes and are sequentially wrapped by the insulating belting layer, the woven shielding layer, the aluminum foil belting layer and the inner sheath.

2. The aluminum alloy core direct current charging pile cable according to claim 1, wherein the core body comprises an aluminum alloy conductor set, a plurality of aramid filaments, a plurality of copper foil filaments and a first TPE insulating layer, and the aluminum alloy conductor set, the aramid filaments and the copper foil filaments are twisted with each other and wrapped by the first TPE insulating layer.

3. The aluminum alloy core direct current charging pile cable according to claim 2, wherein the copper foil wires comprise anti-elastic wires and copper sheets wrapped outside the anti-elastic wires.

4. The aluminum alloy core direct current charging pile cable according to claim 1, wherein the cable core further comprises a protective grounding core and an auxiliary power core, the protective grounding core, the auxiliary power core, the aluminum alloy power core, the signal core and the first filling rope are twisted with each other, and the protective grounding core sequentially comprises a protective grounding conductor and a second TPE insulating layer from inside to outside; the auxiliary power supply wire core sequentially comprises an auxiliary power supply wire conductor and a third TPE insulating layer from inside to outside.

5. The aluminum alloy core direct current charging pile cable of claim 1, wherein the aluminum alloy power supply core comprises a plurality of aluminum alloy conductors and a fourth TPE insulating layer from inside to outside, and the plurality of aluminum alloy conductors are mutually twisted.

6. The aluminum alloy core direct current charging pile cable according to claim 5, wherein the plurality of aluminum alloy conductors are divided into at least two groups, and the aluminum alloy conductors of each group are twisted in the opposite direction to the aluminum alloy conductors between adjacent groups.

7. The aluminum alloy core dc charging post cable of claim 5, wherein the first and second filler cords are formed by twisting a polypropylene material.

8. The aluminum alloy core direct current charging pile cable according to claim 1, wherein the insulating tape layer is a PTFE tape.

9. The aluminum alloy core direct current charging pile cable of claim 1, wherein the braided shield is a tinned alloy braided shield.

10. The aluminum alloy core direct current charging pile cable of claim 1, wherein the inner sheath and the outer sheath are both plastic elastomer (TPE) sheaths.

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