The development trend of wiring harness for new energy vehicles

1 Low-voltage Wiring Harness improves automation level and gross profit margin

The low-voltage wiring harness of automobiles has its own characteristics of large differences in models. 70% of it is made manually, which leads to low gross profit margin and production efficiency. The future development direction is to seek standardized parts in customization, as well as the process of cable pretreatment and pre-installation, and continuously improve the level of automation, efficiency and gross profit margin.

In the industry, one, such as Leoni, tried to improve efficiency by simultaneously carrying out work stations and line boards on the assembly line. Another example is Kunshan Huguang, which tried automated production in the links of incoming materials warehousing, parts out of the warehouse and on-line, and small line pre-assembly, and made good progress in improving production efficiency.

2 High-voltage wiring harnesses are concentrated in the wiring harness factory and lightweight attempts

At present, there are many and diverse high-voltage wiring harness manufacturers, and both wiring harness factories and parts manufacturers are involved in small-batch production. The future development direction is the trend of concentrating on wiring harness factories after the scale effect, which is for the improvement of product gross profit and quality.

Lightweighting of wiring harnesses is also a direction that major car manufacturers are trying. The main weight of the wiring harness lies in the copper material of the cable. How to reasonably choose the application of cables and the application of aluminum conductors is one of the topics of lightweighting in the future.

3 Systematic development of high-voltage connectors to enhance competitiveness

Among foreign manufacturers, only Tyco Electronics has invested early in the research and development of high-voltage connectors, and its products have become a system, but localization is still in progress and the price is relatively expensive; domestic manufacturers used high-voltage and high-current connectors from other industries to apply to automobiles in the early stages of the development of new energy vehicles, and quickly seized the market and took the lead. The next step is to gradually make the high-voltage connectors for new energy vehicles into a complete product series, from small current to large current, from single pin to multi-pin, from right angle to 90-degree connection, and complete various product lines, on the one hand to enhance their own competitiveness, on the other hand to strengthen the binding relationship with vehicle manufacturers.

4 High-voltage silicone rubber cable development fills the gap in technology and production capacity

High-voltage silicone rubber cable is the development direction of new energy vehicles. On the one hand, due to the convenience of body wiring, on the other hand, due to the high temperature safety performance, foreign manufacturers currently have no production lines in my country, and automotive silicone cables are all imported, with long delivery time and high prices. Domestic manufacturers are stepping up development to fill the gap in technology and production capacity, and foreign manufacturers are also carrying out localization. Subsequent competition will be more intense.

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