Charging pile cable The difference between good and bad: during the charging process of the charging post, the voltage and current of the vehicle should also be controlled. The charging cable should be resistant to high voltage, high temperature, electromagnetic interference, stable signal transmission, oil resistance, water resistance, acid and alkali resistance, UV resistance and other characteristics to ensure the stability and safety of charging. During the charging process, the cable should be often dragged and squeezed. The product has high flexibility, which is very convenient for the plugging and unplugging of vehicles. It is possible that the rated temperature of outdoor high-temperature products should reach 125 ℃, and heat resistance can ensure the safe use and life of cables.
Although electric vehicles have experienced rapid growth for several years, they are still in the initial stage. Therefore, the market capacity of electric vehicle charging pile cables still has huge growth space. It is not too late for enterprises to enter the electric vehicle charging pile cable market. He suggested that enterprises that have not yet caught the "fast train" of new energy vehicles should get on the bus and not consider entering after the market is mature and stable.
When the electric field strength is in a relatively low range, the ion mobility increases with the increase of the electric field strength, in proportion. The ion current and electric field strength obey Ohm's law. When the electric field strength is relatively high, the trend of the ion mobility increasing with the increase of the electric field strength gradually changes from a linear relationship to an exponential relationship. When it is close to breakdown, there will be a lot of electron migration, At this time, the insulation resistance coefficient of on-board cable is greatly reduced.
Wire and cable manufacturing involves a wide range of processes, from smelting and pressure processing of non-ferrous metals to chemical technologies such as plastics, rubber and paint; The textile technology of fiber material wrapping, weaving, etc., to metal material wrapping, metal strip longitudinal wrapping, welding metal forming process, etc. All kinds of materials used in wire and cable manufacturing have many types, varieties, specifications and large quantities. Therefore, the quantity, reserve quantity, batch cycle and batch of various materials must be verified. At the same time, the decomposition, recycling, reuse and waste disposal of waste products, as an important part of management, should do a good job in material quota management and attach importance to saving. In the production of wires and cables, from the incoming and outgoing storage of raw materials and various auxiliary materials, the transfer of semi-finished products in each process to the storage and delivery of products, the flow of materials is large, so it must be reasonably arranged and dynamically managed.
As the temperature rises, the insulation resistance coefficient of the on-board cable decreases. This is because the generation and migration of ions increase with the increase of thermal movement. Under the effect of voltage, the conduction current formed by the movement of ions increases, so the insulation resistance decreases. The theory and practice show that the insulation resistance coefficient of vehicle mounted cable decreases exponentially with the increase of temperature, while the conductivity increases exponentially with the increase of temperature.
