Electric vehicle charging pile spring cable

Abstract

The invention discloses an electric vehicle charging pile spring cable which comprises charging wires for transmitting electric energy and realizing grounding protection and a shielded wire that is used for confirming a charging connection. The charging wire and the shielding wire are wrapped by nonwoven fabric. A sheath layer is extruded outside the nonwoven fabric. The external surface of the sheath layer is wave-shaped. Furthermore a fluorescent layer is intermittently applied on the external surface of the sheath layer. The cable has a spring shape which freely telescopes. The shielded wire is composed of a twisted pair, aluminum foil mylar which is wound on the twisted pair, a copper wire braiding layer and a middle packaging layer. Compared with the prior art, The electric vehicle charging pile spring cable has advantages of high convenience in use, etc.

Description

technical field [0001] The invention belongs to the field of cables, in particular to a spring cable for an electric vehicle charging pile. Background technique [0002] At present, the electric vehicle charging pile cables on the market are multi-core non-retractable cables used to connect charging piles or vehicle power supplies for electric vehicle charging. The insulating sheath is generally made of TPE (thermoplastic elastomer). Cables are generally coiled on charging piles or on the ground when not in use or when charging electric vehicles. There are following problems in this kind of cable: one, in the process of use, friction is often generated with the ground or the corner of the ladder wall, etc. due to dragging, and the long-term friction will cause the cable sheath to wear. Second, the cable is in contact with the ground for a long time, especially in summer, it is easy to be burned by the high temperature of the ground. Third, it is easy to be damaged by corro...

AI Technical Summary

Problems solved by technology

This kind of cable has the following problems: 1. During use, it often rubs against the ground or the corner of the ladder wall due to dragging, and the long-term friction will cause the cable sheath to wear out.

Second, the cable is in contact with the ground for a long time, especially in summer, it is easy to be burned by the high temperature of the ground

Three, it is easy to come into contact with corrosive liquids such as acid and alkali left on the ground during use, and it is easy to dirty the cable

Fourth, when not in use, due to the hovering suspension on the charging pile, the cable will also crack due to its own weight

Fifth, the TPE material has poor bendability and the risk of easy cracking

Due to the above shortcomings, customers experience poor comfort during use, low service life of cables, high equipment cost of charging stations, and low safety factor during use of cables.

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