Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to disclose a kind of electric automobile inside and connect cable, it realizes by the following technical solutions.
In first embodiment of the present invention, a kind of electric automobile is internal with connecting cable, including conductor, it is coated on the band outside conductor, the insulating barrier overlayed on outside band, the material of described insulating barrier is 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomer TPE, the rated operational voltage of described cable is 1500V, Long-term service temperature��125 DEG C of cable, ambient temperature >=-40 DEG C during cable laying, cable temperature be at 175 DEG C continuous-stable working time >=6h, the minimum bending radius of cable is 5 times of the outside diameter of cable, it is characterized in that described conductor is stranded by the aluminum-alloy wire that many diameters are 0.01��0.50mm, the cross-sectional area of described conductor is 1.52��120mm2; Outside described band one direction in the way of mutually adjacent is wound on conductor spirally; The material of band is thickness is waterstop or non-woven fabrics or glass fiber tape or the mica tape of 0.15��0.30mm or thickness is the polyester belt of 0.03��0.10mm.
In second embodiment of the present invention, a kind of electric automobile is internal with connecting cable, including conductor, it is coated on the band outside conductor, the insulating barrier overlayed on outside band, the material of described insulating barrier is 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomers, the rated operational voltage of described cable is 1500V, Long-term service temperature��125 DEG C of cable, ambient temperature >=-40 DEG C during cable laying, cable temperature be at 175 DEG C continuous-stable working time >=6h, the minimum bending radius of cable is 5 times of the outside diameter of cable, it is characterized in that described conductor is stranded by the aluminum-alloy wire that many diameters are 0.01��0.50mm, the cross-sectional area of described conductor is 1.52��120mm2; Outside described band one direction in the way of mutually adjacent is wound on conductor spirally; The material of band is thickness is waterstop or non-woven fabrics or glass fiber tape or the mica tape of 0.15��0.30mm or thickness is the polyester belt of 0.03��0.10mm.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that described conductor is made up of multilamellar, is formed by many aluminum-alloy wires are stranded, and the direction of lay between adjacent layer is contrary in every layer; The twisting pitch of every layer is 10��25 times of aluminum-alloy wire diameter in this layer.
Further, a kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterized in that described conductor is made up of multilamellar, in adjacent layer: the twisting pitch of outer layer aluminum-alloy wire is bigger than the twisting pitch of unlined aluminium B alloy wire, and the twisting pitch of outer layer aluminum-alloy wire is 2��4 times of twisting pitch of unlined aluminium B alloy wire.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that the thickness of described insulating barrier is 0.5��3.0mm; More typical thickness is 0.5mm or 0.7mm or 0.8mm or 1.0mm or 1.5mm or 2.0mm or 3.0mm.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that the material of described insulating barrier is can be also any material of the prior art, such as PE, halogen-free flameproof material etc.
Therefore, the present invention has following main beneficial effect: more soft, more flexible, be more easy to construction, deadweight lighter, lower in cost, more can electric current high pressure resistant, big, electrical Interference high temperature resistant, anti-; Flame retardant effect is better, bending resistance is more excellent, it is safer to use.
Detailed description of the invention
Embodiment 1
Ask for an interview Fig. 1 and Fig. 2, a kind of electric automobile is internal with connecting cable, including conductor 1, it is coated on the band 2 outside conductor 1, the insulating barrier 3 overlayed on outside band 2, the material of described insulating barrier 3 is 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomer TPE, the rated operational voltage of described cable is 1500V, Long-term service temperature��125 DEG C of cable, ambient temperature >=-40 DEG C during cable laying, cable temperature be at 175 DEG C continuous-stable working time >=6h, the minimum bending radius of cable is 5 times of the outside diameter of cable, it is characterized in that described conductor 1 is stranded by the aluminum-alloy wire that many diameters are 0.01��0.50mm, the cross-sectional area of described conductor is 1.52��120mm2; Outside described band one direction in the way of mutually adjacent is wound on conductor spirally; The material of band is thickness is waterstop or non-woven fabrics or glass fiber tape or the mica tape of 0.15��0.30mm or thickness is the polyester belt of 0.03��0.10mm.
Embodiment 2
Refer to Fig. 1 and Fig. 2, a kind of electric automobile is internal with connecting cable, including conductor 1, it is coated on the band 2 outside conductor 1, the insulating barrier 3 overlayed on outside band 2, the material of described insulating barrier 3 is 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomers, the rated operational voltage of described cable is 1500V, Long-term service temperature��125 DEG C of cable, ambient temperature >=-40 DEG C during cable laying, cable temperature be at 175 DEG C continuous-stable working time >=6h, the minimum bending radius of cable is 5 times of the outside diameter of cable, it is characterized in that described conductor 1 is stranded by the aluminum-alloy wire that many diameters are 0.01��0.50mm, the cross-sectional area of described conductor is 1.52��120mm2; Outside described band one direction in the way of mutually adjacent is wound on conductor spirally; The material of band is thickness is waterstop or non-woven fabrics or glass fiber tape or the mica tape of 0.15��0.30mm or thickness is the polyester belt of 0.03��0.10mm.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that described conductor is made up of multilamellar, is formed by many aluminum-alloy wires are stranded, and the direction of lay between adjacent layer is contrary in every layer; The twisting pitch of every layer is 10��25 times of aluminum-alloy wire diameter in this layer.
Further, a kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterized in that described conductor is made up of multilamellar, in adjacent layer: the twisting pitch of outer layer aluminum-alloy wire is bigger than the twisting pitch of unlined aluminium B alloy wire, and the twisting pitch of outer layer aluminum-alloy wire is 2��4 times of twisting pitch of unlined aluminium B alloy wire.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that the thickness of described insulating barrier is 0.5��3.0mm; More typical thickness is 0.5mm or 0.7mm or 0.8mm or 1.0mm or 1.5mm or 2.0mm or 3.0mm.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that the model of described aluminum-alloy wire is 8A07 or 8030 or LHA1 or LHA2.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that the tensile strength of described aluminum-alloy wire is 120��155MPa, minimum elongation at break when being 8%, 20 DEG C, and maximum resistivity is 29.7n �� m.
A kind of electric automobile inside described in any of the above-described embodiment connects cable, it is characterised in that described aluminum-alloy wire is made up of the raw material of following weight portion: silicon: 0.03��0.08 part, ferrum: 0.2��0.42 part, copper: 0.2��0.3 part, magnesium: 0.06��0.2 part, zirconium: 0.1��0.3 part, zinc: 0.01��0.04 part, boron: 0.01��0.03 part, platinum: 0.01��0.05 part, titanium: 0.01��0.1 part, tungsten: 0.01��0.05 part, manganese: 0.01��0.03 part, surplus be aluminum; Wherein, magnesium and silicon mass ratio are (1.50��2.00): 1; Maximum resistivity that the tensile strength minima of described aluminum-alloy wire is 305MPa, minimum elongation at break when being 3.8%, 20 DEG C is 32.5n �� m, the max line coefficient of expansion is 2.15 �� 10-5(1/ DEG C), 20 DEG C time maximal density be 2.85g/cm3��
In aluminum-alloy wire described above, zirconium and aluminum form three calorize zirconium compoundss, enable aluminum alloy to middle recrystal grain and obtain effective refinement, magnesium silicon ratio (1.50��2.00): 1, silication magnesium dioxide hardening constituent is defined in enabling aluminum alloy to, when the subsequent heat treatment same for aluminium alloy, this intensity of aluminum alloy is compared with the magnesium silicon ratio not aluminium alloy within the scope of this after tested, intensity improves 30��40MPa, when wherein magnesium silicon is than 1.50:1, intensity about improves 30MPa, when magnesium silicon is than 2.00:1, intensity about improves 31MPa, when magnesium silicon is than 1.80:1, intensity improves 50MPa, magnesium silicon ratio is from 1.50:1 to 1.80:1, intensity increases journey ascendant trend, magnesium silicon ratio is from 2.00:1 to 1.80:1, intensity increases journey ascendant trend, described magnesium silicon ratio refers to mass ratio, in aluminum-alloy wire described above, the addition of platinum makes resistivity be greatly reduced.
Applicant has done detailed detection for the aluminum-alloy wire of formula as below, and described aluminum-alloy wire is made up of the raw material of following weight portion: silicon: 0.05 part, ferrum: 0.2��0.42 part, copper: 0.2��0.3 part, magnesium: 0.09 part, zirconium: 0.1��0.3 part, zinc: 0.01��0.04 part, boron: 0.01��0.03 part, platinum: 0.01��0.05 part, titanium: 0.01��0.1 part, tungsten: 0.01��0.05 part, manganese: 0.01��0.03 part, surplus be aluminum; Namely magnesium and silicon mass ratio are 1.8:1; Maximum resistivity that the tensile strength minima of the aluminum-alloy wire recorded is 337MPa, minimum elongation at break when being 4.6%, 20 DEG C is that 30.2n �� m, the max line coefficient of expansion are 2.13 �� 10-5(1/ DEG C), 20 DEG C time maximal density be 2.65g/cm3��
Conductor in the cable of the present invention, has excellent acidproof, alkaline-resisting, water-fast and antioxygenic property, and maintaining requirement is extremely low, does not worry oxidation and etching problem;And there is extremely strong heat resistance, expand and be contracted in the impact being not substantially affected by temperature within the scope of-100��300 DEG C.
Certainly, as improving further, in the present invention, in any of the above-described embodiment, the material of belting layer can also is that metal tape such as copper strips or aluminium strip or aluminum alloy strip, and outside band one direction in the way of mutually adjacent is wound on conductor spirally, namely the pitch between spiral is zero; Conductor and many aluminum-alloy wires can be stranded, it is also possible to be parallel placement, so make conductor binding constraint be integrated; Do not scatter during alternating bending.
In the present invention, owing to conductor employing aluminum-alloy wire, aluminum-alloy wire can accomplish than aluminium wire diameter is thinner but intensity is higher, therefore can stranded production more quickly, twisting speed is 3��5 times of aluminium wire, is 2��3 times of copper wire; Therefore cable is more soft, more flexible, be more easy to lay in narrow space, more can high current capacity high pressure resistant, resistance to, high temperature resistant, more resistant to acid/base/aqueous corrosion, will not aoxidize; There is less thermal coefficient of expansion, after making cable, expand and be contracted in the impact being not substantially affected by temperature within the scope of-100��300 DEG C, can keep integrated with insulating barrier; Creep-resistant property is better. In the present invention, cable insulation adopts 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomer TPE or TPU, can effectively act as fire retardation, uses in the narrow space of electric automobile, and bending freely, has no insulating barrier cracking phenomena and occurs.
Thermoplastic elastomer (TPE) TPE(ThermoplasticElastomer in the present invention) it is a kind of high resiliency with rubber, high intensity, high resilience, having again can the material of feature of injection molding; The 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomer TPE used in the application can buy in companies such as LASTO, POLYONE.
TPU (Thermoplasticpolyurethanes) name is called Polyurethane Thermoplastic Elastomer rubber; The 125 DEG C of environmentally-friendly flame retardant thermoplastic elastomers used in the application can buy in companies such as LASTO, POLYONE, SK, Changshu Zhong Lian new material company limiteies. The TPU used in the application water resistance under muddiness is good, and obvious hydrolysis will not occur in 1��2 year; It addition, cable in use the application with do compatibility test with kerosene, gasoline, hydraulic oil, machine oil, lubrication wet goods, other parts in cable are all peeled off, only surplus insulating barrier, through the immersion of 90 days, does not find mutual erosion with oil product.
Applicant not only used TPE, TPU of the prior art, also developed a kind of halogen-free flame-retardant thermoplastic elastomer electrical cable material, insulant for the application, it is characterised in that described halogen-free flame-retardant thermoplastic elastomer electrical cable material is made up of the raw material of following weight portion: BS SBS:30 part; Poly-(2-ethyl-6 n-pro-pyls-Isosorbide-5-Nitrae-phenylene) ether: 40 parts; Polyethylene or polypropylene: 38 parts; Butylene: 25 parts; The model that is produced from commercially available Kelamayi is 4010 naphthenic base white oils: 15 parts; Tricresyl phosphate: 30 parts; Tissuemat E: 3 parts; Model is the cable jacket antioxidant of 1010: 0.5 part; Commercially available model is UV-360 ultraviolet-resistant absorbent: 0.8 part.
After tested, above-mentioned halogen flame-retardant thermoplastic elastomer electrical cable material density is 1.025g/cm-3, melt flow rate (MFR) is 11.8g/10min, shore hardness is 83, hot strength is MPa, elongation at break is 14.4%, 135 DEG C �� 168h degradation to be 2.6%, 100 DEG C of thermal deformations be 1.8%, anti tear value is 25N/mm, tested by 135 DEG C �� 1h cracking resistance, cracking resistance (130 DEG C, load 10kg, 3mm sample) be 28%, 20 DEG C of specific insulations by, (0/30)-40 DEG C of impact brittle test by, oxygen index (OI) is 2.6 �� 10 by, hot strength rate of change16�� m, dielectric strength is 32MV/m, flame retardant rating is VW-1, 130 DEG C �� 1h cable thermal contraction is 0.2%, 45g/L oxalic acid solution, (23 �� 5) oC, the acidproof rear elongation change rate of 168h is-2.3%, 40g/L sodium hydroxide solution, (23 �� 5) oC, the alkaline-resisting rear change rate of strength of 168h is 1.2%, 40g/L sodium hydroxide solution, (23 �� 5) oC, the alkaline-resisting rear elongation change rate of 168h is-4.2%, (80 �� 2) oC, 7 �� 24h heat-proof water change rate of strength is 0.04%, (80 �� 2) oC, 7 �� 24h heat-proof water elongation change rate is 0.35%, (85 �� 2) oC, (85 �� 2) % humidity, 3000h is aging, and rear elongation change rate is-1.8%,And when the cable of the present invention produces, the maximum stable process velocity of insulating barrier has reached on 120 ms/min, and property indices has all reached outstanding grade.
Cable in the present invention is placed on acid pH value to be 5-6, alkaline ph value be in the aqueous solution of 8-9, after 30 days, remain to normal use.
Therefore, the present invention has following main beneficial effect: more soft, more flexible, be more easy to construction, deadweight lighter, lower in cost, more can electric current high pressure resistant, big, electrical Interference high temperature resistant, anti-; Flame retardant effect is better, bending resistance is more excellent, it is safer to use.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be implemented to use by other various forms, and they also fall within protection scope of the present invention.