Harness industry brings opportunities and challenges

 In recent years, with the rapid development of the new energy vehicle industry, it has brought many opportunities and challenges to the traditional wire harness processing industry. As an important basic automotive component, automobile wiring harness is also the nerve vein of a vehicle. Therefore, major automotive companies also have strict requirements for new energy vehicle wiring harnesses.


Classification of automotive harnesses: In automotive systems, harnesses include low-voltage harnesses and high-voltage harnesses, while high-voltage harnesses include high-voltage connectors, high-voltage cables, and charging sockets. Functionally, there are two types of power lines that carry the power of the driving actuator and signal lines that transmit sensor input commands. Power lines are thick wires that carry large currents, while signal lines are optical fiber communication; For example, the cross-sectional area of wires used for signal circuits is 0.3 or 0.5 mm. The cross-sectional areas of wires used in motors and actuators are 0.85 and 1.25 mm, while the cross-sectional areas of wires used in power circuits are 2, 3, and 5 mm; Special circuits (starter, alternator, engine ground wire, etc.) have different specifications of 8, 10, 15, and 20 mm. The larger the cross-sectional area of the wire, the greater the current capacity. New energy vehicles mainly use high-voltage wire harnesses.


High voltage harnesses for new energy vehicles can be configured to connect internal and external harnesses according to different voltages. It can transmit power quickly and high-quality, shielding external signal interference. Shielding of high-voltage wires is not necessary for conducting data on cables, but it can reduce or avoid radiation from high-voltage wires, so shielding of high-voltage harnesses is necessary. However, due to the characteristics of high-voltage harnesses such as high voltage and current, it also brings many challenges to the design of harnesses.


For more information on EV cable for new energy vehicles and Charging cables for electric vehicles, please visit OMG’s official website:  https://www.omgevcable.com

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