A kind of four-layer butt-welded aluminum-plastic composite sp pipe and preparation method thereof

Abstract

The invention discloses a four-layer butt-welded aluminum-plastic composite SP tube, which is sequentially provided with an inner tube, a glue layer, a middle tube and an outer tube from inside to outside, wherein a polyethylene PEX material is adopted by the inner tube and the outer tube; and the middle tube is a high-strength alloy aluminum strip. Meanwhile, the invention discloses a preparationmethod of the four-layer butt-welded aluminum-plastic composite SP tube, which comprises an inner tube extruding step, a vacuum calibrating step, a water tank cooling step and an inner tube gluing step. According to the four-layer butt-welded aluminum-plastic composite SP tube, radiation of high-voltage electricity can be shielded when high-voltage current of a high-voltage wiring harness of a new energy vehicle is 1800V, so that a high-voltage cable is effectively protected, electric leakage of the high-voltage wiring harness is effectively prevented, fast charging of the high-voltage wiringharness is effectively protected, the condition that the high-voltage wiring harness and a tube material of a sheath tube do not rebound after being bent can be ensured, and the four-layer butt-welded aluminum-plastic composite SP tube has the advantages of being fast in installation and connection and the like.

Description

technical field [0001] The invention relates to a SP pipe material, in particular to a four-layer butt-welded aluminum-plastic composite SP pipe and a preparation method thereof. Background technique [0002] All kinds of ordinary high-voltage wire harness sheath tubes used in new energy vehicles can no longer meet the requirements of high-quality new energy vehicles. At present, the pure plastic wire harness sheath tube is easy to rebound when bent, and has poor rigidity, which causes defects such as inconvenient installation and poor anti-extrusion effect. The stainless steel wire harness sheath tube, due to its poor toughness, has poor protection for high-voltage wires, cannot meet the requirements of high-voltage fast charging, and cannot shield the radiation of 1800V high-voltage current, and has strong rigidity, so it cannot be fixed on the outer bottom of the frame, and installation is time-consuming. . Contents of the invention [0003] The purpose of the present...

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Problems solved by technology

[0002] All kinds of ordinary high-voltage wire harness sheath tubes used in new energy vehicles can no longer meet the requirements of high-quality new energy vehicles

At present, the pure plastic wire harness sheath tube is easy to rebound when bent, and the rigidity is poor, resulting in inconvenient installation and poor anti-extrusion effect.

The stainless steel wire harness sheath tube has poor protection for high-voltage wires due to its poor toughness, and cannot meet the requirements of high-voltage fast charging, nor can it shield the radiation of 1800V high-voltage current, and is rigid enough to be fixed on the outer bottom of the frame, which takes time to install.

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