Preparation method of special multi-core cable for new energy vehicle
A new energy vehicle, multi-core cable technology, applied in the direction of cable/conductor manufacturing, marking conductor/cable, conductor/cable insulation, etc., to achieve the effect of light weight and cost reduction
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[0034] see Figure 1 to Figure 3 As shown, the present invention provides a kind of preparation method of multi-core cable special for new energy vehicles, comprising:
[0035] Step 1. Twisting a number of bundled wires into a strand 1 according to a pitch ratio of 20 to 25 times through a stranding machine. The twisting direction is left. Stranding by several bundles can increase the bending resistance of the strand 1. wherein, each of the bundled wires is drawn from several single wires, and the material of the single wires is aluminum alloy, soft round copper with a purity of more than 99.99%, or tinned soft round copper; the single wires are made of aluminum alloy , under the same circumstances, compared with traditional copper, because aluminum alloy has a lower density, it is lighter in weight and cheaper at the same time. Compared with aluminum alloy, soft round copper or tinned soft round copper with a purity of more than 99.99% contains less harmful substances and is...
Embodiment 1
[0055] QLJBJP21-E-SIR600 / 900V2×4, there are two single-core conductors, the single-wire is aluminum alloy, the diameter of the single-wire is 0.19mm, the total number of the single-wire of each single-core conductor There are 128 strands, consisting of 8 strands per bundle, and a total of 16 twisted strands. It is twisted leftward with a pitch ratio of 20-25 times.
[0056] The insulating layer 2 is uniformly extruded with a layer of silicone rubber in red and black colors, with a nominal thickness of 0.40mm, the thinnest point not less than 0.32mm, and concentricity not less than 75%. The stranded pitch diameter ratio of the insulating layer 2 is 12 to 16 times.
[0057] After stranding, extrude a layer of silicone rubber to fill it, as the inner sheath 3, the thickness L of the inner sheath 3 is 0.3mm, and the color is the true color of silicone rubber.
[0058] The inner sheath 3 is braided with 192 0.15mm tinned copper wires, 8 wires per share, with a 24-spindle braiding...
Embodiment 2
[0064] QBP21-B-PVC600 / 900V2×4 has two single-core conductors, the single-core conductors are bare soft round copper wires, the diameter of the single-wires is 0.19mm, each of the single-core conductors The total number of strands is 128 strands, consisting of 8 strands per bundle, and a total of 16 twisted strands. It is twisted leftward with a pitch ratio of 20-25 times.
[0065] The insulating layer 2 is extruded by extruding a layer of polyvinyl chloride, the color is red or black, the nominal thickness is 0.40mm, the thinnest point is not less than 0.32mm, and the concentricity is not less than 75%. The stranded pitch diameter ratio of the insulating layer 2 is 12 to 16 times.
[0066] After stranding, extrude a layer of polyvinyl chloride filling, as the filling layer 3, the thickness L of the filling layer 3 is 0.3mm, and the color is the natural color of polyvinyl chloride.
[0067] Filling layer 3 is braided with 192 0.15mm tinned copper wires, and 8 wires per strand...
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