The role of automotive wiring harness in the vehicle is to transfer or exchange the power signal or data signal of the electrical system to achieve the function and requirements of the electrical system. It is the main body of the network of the automobile circuit, and there is no automobile circuit without harness. The design process and manufacturing process of automobile wiring harness are more complex, requiring the wiring harness engineer to be careful and meticulous, and not any carelessness. If the wiring harness design is not good, can not combine the functions of each part organically, it may make the wiring harness become the multiple link of automobile failure. The following, the author briefly discussed the automobile wiring harness design and manufacturing process.

First, the electrical layout engineer shall provide the function, electrical load and related special requirements of the vehicle electrical system. The state, installation position and docking form of wiring harness and electrical parts.

2. According to the electrical functions and requirements provided by the electrical layout engineer, the electrical schematic diagram and circuit diagram of the vehicle can be drawn.

Three, according to the electrical principle circle for each electrical subsystem and loop energy distribution, including power supply wire, and ground points.

Four, according to the distribution of electrical components of each subsystem, determine the wiring form of the wiring harness, each automobile wiring harness connected electrical components and the direction of the car; Determine the outer protection form of the wire harness and the protection of the hole; Determine fuses or circuit breakers according to electrical load; According to the amount of fuse or circuit breaker to determine the wire diameter; According to the function of electrical parts, according to the relevant standards to determine the wire color; Determine the type of terminal and sheath connected to the wiring harness according to the connector of the electrical component.

5. Draw two-dimensional wiring harness diagram and three-dimensional wiring harness layout diagram.

6. According to the approved three-dimensional wiring harness layout diagram, check the two-dimensional wiring harness diagram, the two-dimensional wiring harness diagram is accurate and can be issued, after approval, according to the wiring harness diagram trial production.

The above 6 processes are described too general, the specific process of automotive wiring harness design, will encounter a lot of such problems, all need the wiring harness designer calm calm analysis, to ensure the rationality and reliability of the wiring harness design, to ensure the smooth progress of the vehicle circuit design.

This article comes from Suzhou Simet Electronic Technology Co., LTD., reprint, please indicate the source!

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