Function and design flow of automobile harness

Automotive wiring harness It is generally divided into small harness and main harness. After the rapid development of new energy vehicles, they can be divided into low-voltage and high-voltage harnesses, including high-voltage harnesses of new energy vehicles and low-voltage harnesses of traditional vehicles.

It must be said that nowadays, new energy vehicles have increasingly become the trend of the times, and the demand for high-voltage harness is also increasing. According to statistics, in 2020, the global high-voltage harness market scale of new energy vehicles has reached 4.69 billion yuan, and the future prospect is immeasurable.

So this is popular Automotive wiring harness How is it designed? I'll show you today.

Automotive wiring harness Role of:

The role of harness in the whole vehicle is to transmit and exchange the power signal and data signal of the electrical system to realize the functions and requirements of the electrical system. As the core of vehicle electrical design, harness system design is just like the nervous system of automobile. It can be said that the performance of automobile completely depends on it.

Harness principle design:

In fact, harness design is a kind of connection mode that correctly connects the vehicle power supply through wires, fuses, relays, switches and control devices, so that each electrical equipment can work normally.

Power distribution:

Normally charged - directly powered by battery.

Control power - power on only when certain conditions are met.

Ignition switch control.

Special switch control

Relay control.

Controller control.

Example: determine the ignition switch power off (lock, ACC, Ig1, ig2, st)

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