Development trend of automotive wire harness welding

1, automotive wiring harness industry characteristics

With the development of the automobile industry and the upgrading of consumer demand, the automobile has gradually developed from the convenience and warmth of people's travel to the entertainment and intelligence. Increasing the number of automobile electronic equipment and promoting the electronization of automobiles has become an important and effective way to seize the future automobile market. The transformation of automotive electronics and intelligence has promoted the steady development of the automotive wiring harness industry. At present, the automotive wiring harness industry shows the following industry characteristics in the rapid development process:

(1) Stable cooperation with vehicle manufacturers and high market concentration

The automotive wiring harness welding industry is highly dependent on the automotive industry, most of the brand car manufacturers have their own relatively mature and stable automotive supporting system, especially the German, American, Japanese as the representative of the international automotive companies to implement strict assessment and evaluation of parts suppliers, its long-term high standard of parts entreat makes the separation of automotive wiring harness suppliers and automotive companies is relatively stable. At present, the global automotive wiring harness market is mainly dominated by Japan's Yazaki, Sumitomo Electric, Fujikura, South Korea's Luo, Jingxin, and Europe and the United States, Leni, Ambof, Kronenberg Schubert Company, Dexmere, Lear and other wiring harness manufacturers.

As far as the domestic market is concerned, most of the large independent brand car factories have stable supporting consumption of foreign wire harness factories, and foreign capital and joint venture vehicle factories, the request for wire harness is higher, the choice of wire harness manufacturers are mostly international parts manufacturers in the domestic wholly-owned or joint venture manufacturers, such as Zhurun electric assembly mainly for Guangzhou Honda, Dongfeng Honda supporting.

In recent years, due to the increasing attention of international automobile manufacturers to cost control, the procurement of auto parts is increasingly strengthened, and a number of independent wiring harness enterprises have emerged in China. After a long period of accumulation of product technology and synchronous development experience, the overall strength of these high-quality foreign enterprises has been significantly enhanced, relying on timely and effective service, reliable production quality and gradually enter the supplier supporting system of international automobile manufacturers.

(2) Participate in the design and development of vehicle manufacturers, and synchronous research and development capabilities are increasingly important

The rise of global procurement of auto parts and the industrial division of labor and cooperation pattern composed of vehicle enterprises and parts enterprises have made automobile wiring harness enterprises gradually participate in the design and development of new models of vehicle manufacturers, and put forward higher requirements for the product design and synchronous research and development capabilities of automobile wiring harness enterprises. At the same time, the development of the automobile industry from time to time makes the life cycle of each model gradually shorter, new car research and development and its consumption cycle is also shortened accordingly, so the vehicle manufacturers begged automotive wiring harness enterprises to speed up product research and development design, with synchronous development and advanced development of talent. Synchronous development entreat automotive wiring harness suppliers to integrate into the vehicle supporting system, fully understand the concept and needs of vehicle design, and according to the vehicle manufacturer's plan and time node with the vehicle development progress, timely and synchronously launch the design scheme and final product of automotive wiring harness. Therefore, in order to improve the vehicle supporting capabilities of automotive wiring harness enterprises, synchronous research and development strength is becoming more and more important.

2, industry technical level, technical characteristics

The technical indicators of automotive wiring harness mainly include mechanical, electrical and environmental resistance characteristics. Mechanical characteristics mainly refer to the installation size, inserting and pulling force, mechanical impact and vibration and other technical requirements; Electrical characteristics mainly refer to circuit current carrying, signal transmission, electromagnetic interference, circuit maintenance, etc. Environmental resistance refers to the requirements of temperature resistance, wear resistance, corrosion resistance, noise resistance and other aspects.

Automotive wiring harness welding is mainly used to connect the car battery, distribution box, actuator, controller, sensor and other components, to provide electrical energy and signal transmission for the vehicle electrical and electronic components, and to provide the basic connection for the control loop, so that it can complete all electrical functions. Electrical safety and signal accuracy require extremely high stability of wiring harness connection, ensuring that the line does not produce overload, short circuit, open circuit, voltage wavering and signal transmission attenuation. In the design and manufacture of automotive wiring harness, in addition to ensuring its safety and reliability, signal transmission stability, electrical function control, but also request the design scheme to consider reasonable wire diameter and material, separate installation design, so that the harness occupies a small space, under the premise of ensuring the performance, reduce its own weight, optimize the cost of wiring harness.

At present, in the category of medium models, domestic wiring harness enterprises and foreign mature enterprises, there is still a certain gap, independent research and development, technological innovation talent needs to further improve. However, with the accumulation of independent development and supporting experience of China's automotive wiring harness industry for many years, the production quality is more reliable, the service level is more perfect, and the industry has cultivated a small number of wire harness enterprises with synchronous development and design capabilities and a larger range.

Wintone Z63 as a strong and wear-resistant engineering plastic, in the application of automotive connectors, Wintone Z63 material significant characteristics are: strong and not affected by water, cold resistance, processing activity (injection thin wall parts are not easy to warping), wear resistance to salt spray.

In the application of automotive connectors, compared with traditional nylon 66 and PBT, Wintone Z63 greatly improves the toughness of the material on the basis of adhering to the rigidity, heat resistance and electrical properties, and provides a new disposal solution for improving the brittleness resistance of the connector (especially at low temperatures). At the same time, the mobility of the Z63 allows complex structural parts to be molded at lower injection pressures and speeds, which helps reduce the risk of warping of connectors.

The water absorption of Wintone materials is very small (only one-sixth of PA66), and the water has little effect on the connectors made of Wintone materials. In addition, the mobility and toughness of the Wintone Z63 make the thin-wall connector stronger without the need for water disposal. During injection molding, the whole package (25 kg) of Wintone material does not need to be monotonic in advance and can be directly injected. It can greatly reduce the drawing force of nylon connectors affected by environmental humidity and reduce after-sales complaints of connector customers.

3, the development trend of the automotive wiring harness industry

(1) The rapid development of new energy vehicles will promote the transformation and upgrading of automotive wiring harnesses

In the face of the increasingly severe global energy shortage and environmental pollution problems, countries and regions represented by the United States, Japan, the European Union and China began to transform, and successively raised new energy vehicles as a national strategy to alleviate energy panic and reduce the pressure of environmental pollution. In the rapidly expanding industry trend of new energy vehicles, automotive wiring harnesses, as an important basic automotive parts, are facing important opportunities for design and development, process transformation, and performance breakthroughs. Compared with traditional fuel vehicles, new energy vehicles have higher requirements for wire harness conveying ability, mechanical strength, insulation maintenance and electromagnetic compatibility. At present, new energy electric vehicles usually use a driving voltage of up to 600V or higher, which is much higher than the 12V voltage of fuel vehicles, and requires the harness to have stronger voltage resistance and tightness to avoid the high-voltage line short circuit caused by the car after the collision. In addition, the application of new energy vehicles is AC motor, electromagnetic interference is more intense, the design of new energy vehicles must consider electromagnetic interference, in order to ensure the reliability of wire harness application.

In recent years, the breakthrough growth of new energy vehicles has gradually transformed the domestic automotive wiring harness market from a low-cost strategic market to a cost-effective market with higher technical content. The driving voltage of new energy vehicles is high, and high voltage wiring harness is required to connect each circuit unit. High voltage wiring harness is not only a key component of the high voltage electrical system of new energy vehicles, but also an important guarantee for the safe and reliable operation of new energy vehicles. Automotive wiring harnesses will seek to upgrade breakthroughs from the aspects of raw material, consumption process and product characteristics to complete high-pressure development. China's foreign wiring harness suppliers rely on the good supporting relationship with independent new energy vehicle manufacturers, the first to enter the new energy vehicle supply system, some high-quality wiring harness enterprises have completed technical breakthroughs in the design and development of high voltage wiring harness, with the first research and development strength, the development potential is huge.

(2) The lightweight of automotive wire harness welding has become the focus of the future

In the context of global environmental standards strengthening from time to time, in order to improve the fuel efficiency of vehicles, car manufacturers are vigorously promoting the lightweight of automobile consumption. Body weight reduction will optimize the fuel economy, handling stability and crash safety of the vehicle, and effectively improve the quality of the vehicle. Affected by this, the lightweight development of automotive wiring harnesses has also become a key breakthrough category. At present, with the rapid development of automobile electronization and information technology, the large number of electronic equipment in the car makes the electric wiring in the car longer and more complex, the increase in the weight of the car wire harness also leads to the increase in the cost and energy consumption of the vehicle, and the lightweight development purpose of the wire harness becomes more and more important. In terms of weight reduction of automotive wire harness products, in addition to the large use of thin-wall wires to reduce the cross-sectional area of wires, the use of aluminum, which is lower in cost and lighter in weight than copper, has become a hot research and development direction of wire harness lightweight. In the future, once there is a mature disposal solution for the problems of easy oxidation of aluminum wires and unstable electrical and mechanical properties, lightweight aluminum wiring harnesses are expected to become the focus of automotive wiring harnesses.

(3) Domestic wiring harness head appears, the future capital competition will accelerate the survival of the fittest

At present, the domestic automobile wiring harness manufacturers are more, but most of the scope is small, the research and development ability is weak, the consumer equipment is backward, the quality level is not high, the supporting model is single, mainly for the independent brand supporting processing. With the overall strength of independent brand parts enterprises, some leading wire harness enterprises that establish brand influence in the high-quality wire harness market have begun to accelerate industrial capital planning, integrate industrial resources, give full play to the synergistic effect with collaborators in technology, customer resources and supporting services, and accelerate the survival of the fittest in the industry. In the future, with the development of the automobile industry, the automobile manufacturers of automotive wiring harness products are more severe and complex, the scope of small, weak wiring harness enterprises will face a more severe market environment, and China's high-quality wiring harness enterprises will rely on outstanding production quality and stable customer resources to further expand market share. In the future, China's wire harness industry will face the survival of the fittest and accelerate the completion of the industrial environment of resource integration.