Discuss the development trend of wiring harnesses for new energy-powered vehicles

Wire harness manufacturing is the grouping of multiple wires or cables together with appropriate connectors and protective materials to meet the electrical connection needs of a specific device or system. Wire harness manufacturing is an indispensable and important link in modern industrial production and is widely used in various fields such as new energy vehicles, aerospace, and mechanical equipment.

According to data, the earliest automotive wiring harness can be traced back to the early 20th century. At that time, the wires of automobile electrical systems were all handmade, and there were no unified specifications and standards. This situation not only increases manufacturing costs, but also limits the development of automotive electrical systems. In order to solve this problem, automobile manufacturers began to explore a more efficient and standardized form of cable organization, and automobile wiring harnesses came into being.

Automobile wiring harness is the main body of automobile circuit. The electronic control system in modern cars is closely related to the wiring harness. With the continuous improvement of automobile safety, comfort and environmental protection requirements, the number of circuits and power consumption in automobiles has increased significantly, making how to arrange a large number of wire harnesses more effectively and rationally in a limited space has become a difficult problem in automobile manufacturing. This paper briefly introduces the current status and development trends of automotive wiring harness lightweighting, modularization and in-vehicle communication technology.

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With the rapid development of social economy, the absolute number of electric vehicles has increased rapidly, and various regions have charging piles and cable equipment to charge electric vehicles. Electric vehicle charging piles came into being in the context of policies and actual conditions.

Application scope and performance requirements of electric vehicle charging piles: Charging pile cables can be used indoors or outdoors. When used outdoors, charging pile cables can withstand the erosion of high cold, sunlight, rain and automotive oil substances. Charging pile cables are resistant to ultraviolet rays and ozone. , High and low temperature resistance and chemical erosion and other special properties.

Charging pile cables can be frequently stretched, bent, or subjected to external mechanical damage such as being rolled over by electric vehicles. Charging pile cables meet special mechanical performance requirements such as winding, bending, and vehicle rolling tests.

Conductor type: The conductor is made of multiple strands of finely twisted oxygen-free copper wire, which is highly flexible.

Insulation characteristics: Special modified high-temperature resistant elastomer material insulation, oil-resistant, water-resistant, corrosion-resistant, high and low temperature resistant, high mechanical strength, excellent chemical stability and dielectric properties, good product performance, and safe to use. Applicable environment: -40℃~125℃;

Applicable products: Suitable for car charging pile equipment, mobile portable charging wire and cable devices (spring wire series), internal wires for electric vehicles (battery wires)/motor wires.

Flexibility: Spring charging pile cables usually adopt a retractable design and can be adjusted according to different models and charging needs, providing better flexibility and convenience.

Convenient storage: The spring charging pile cable can be expanded and contracted as needed, and can be stored more compactly on the charging pile without taking up too much space, making it easy to install and manage.

Durability: Spring charging pile cables are usually made of high-quality materials and have strong durability and tensile strength. They can withstand long-term use and frequent expansion and contraction without being easily damaged.

In general, spring charging pile cables have the advantages of flexibility, convenient storage, durability, safety and compatibility, and can provide a more convenient, safe and efficient charging experience.

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As electric vehicle technology continues to develop, charging technology has also been improved and innovated. There are two main charging methods for modern electric vehicles: DC fast charging and AC slow charging. DC fast charging refers to inputting high-voltage DC power directly into the battery of an electric vehicle. The charging speed is fast and is suitable for long-distance travel and urgent need for charging. AC slow charging refers to connecting low-voltage AC power to the battery of an electric vehicle through a charging pile. The charging time is relatively long and is suitable for daily charging and parking charging.

Among them, according to popular industry information, charging operation service providers are in the middle and lower reaches of the charging pile industry chain. The charging pile industry chain mainly includes: Upstream: mainly suppliers of charging pile equipment components, including charging modules, power devices, contactors, transformers, connectors, etc. Representative companies include Phoenix Connector, etc. Midstream: There is overlap in the business between charging pile manufacturers and operators. Many mainstream charging pile companies adopt the "production + operation" integrated model. Representative companies include teld and so on. Downstream: The downstream of charging piles is mainly composed of new energy electric vehicles and charging service operation solutions. Representative companies include BYD, Tesla, Schneider Electric, etc.

The number of charging piles continues to increase, and the vehicle-to-pile ratio gradually decreases. As supporting infrastructure for new energy vehicles, the number of charging piles continues to increase with the increase in the number of new energy vehicles. The vehicle-to-pile ratio refers to the ratio of the number of new energy vehicles to the number of charging piles. It is an indicator of whether charging piles can meet the charging needs of new energy vehicles. The lower the vehicle-to-pile ratio, it means that the supply of charging piles is more sufficient. More convenient.

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