#EV high voltage wiring harness structure features

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Electric vehicle high-voltage wiring harness structure design and its function?

New energy vehicle high-voltage wiring harness is mainly composed of connectors, terminals, cables, coverings and other parts.

Introduction of high-voltage connector standards. At present, connector manufacturers basically refer to the four major European OEMs: Audi, BMW, Daimler, and Porsche jointly developed the industry standard LV series standards; in North America, they mainly implement the relevant standards of SAEuscar, in order to better adapt to More and more HEV requirements, the SAE-USCAR 2 standard was updated in 2008, and the voltage level was raised from the original 20V to 600V. China also has its own high-voltage connector standard: GB standard. In terms of content and standards, there are still many areas that need to be improved.

Introduction to the structure of high-voltage connectors. It is mainly composed of four parts: contacts, insulators, shells and accessories. Among them, the contacts are the core components of the connector to complete the optical and electrical signal connection. The optical and electrical signals required by the vehicle during driving are completed by the insertion of the contacts. The insulator and the shell mainly play the role of fixing, insulating and mechanical protection; the accessories are divided into structural accessories and installation accessories, such as clamps, cable clamps, sealing rings, gaskets, etc. Mounting accessories such as screws, nuts, spring rings, etc.

Introduction of high-voltage wire harness crimp terminals. The metal conductor inside the terminal is the core part of the terminal, which transmits the voltage, current or signal from the external wire and cable to the corresponding contact of the corresponding connector. Therefore, the contacts must have excellent structure, stable and reliable contact retention force and good electrical conductivity; the function of the insulator is to keep the contacts in the correct position, and to make the contacts between the contacts and the shell. Insulators are insulated from each other, so the insulating parts must have excellent electrical properties, mechanical properties and process forming properties; the insulator not only acts as insulation, but also provides accurate alignment and protection for the protruding contacts. A feature that is tightly secured to the device. The terminals need to be well fixed to ensure the normal operation of the power transmission and signal control of the control system.

Introduction of high-voltage cables for new energy vehicles. The high-voltage cable material is affected by the environment and function. The temperature near the generator and power battery is high, and there are many corrosive liquids and gases. The cable needs to have high temperature resistance, acid and alkali resistance, corrosion resistance and other properties; the wire on the automatic transmission It needs to have oil resistance, high temperature resistance and other properties; weak signal sensors need to use shielded wires… Automobile wiring harnesses usually use stranded copper wires, and the products need to be flexible, small bending radius, high temperature resistance, acid and alkali resistance, oil resistance, wear resistance, Halogen-free flame retardant and other characteristics, Paige Rui is a manufacturer of energy storage wiring harnesses and new energy electric vehicle wiring harnesses.

Introduction of high voltage wiring harness cover. The covering is mainly divided into corrugated tube and heat shrinkable tube. The temperature resistance level is -40°C-125°C. It needs to meet good elasticity and flexibility, and play a role in insulating and protecting the cable.

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