0-1801432-1 1801432-1 Auto Wire Terminal For Elcetric Connector Crimp Loose Terminals

With the rapid development of technology, more and more automotive electrical functions are increasingly complicated, and the electrical system is becoming more and more complicated. From engine control to transmission control, from driving, braking, turning control to safety guarantee system and instrument alarm system, from power management to to power management to to power management to the power management to the power management to the instrumental alarm system. Various efforts to improve comfort make the automotive electrical system form a complex large system. The large electrical system is connected through the car neural network-wire beam system, and the technical requirements for design, process control, processing and manufacturing, and assembly of wire beam are connected. It is also getting stricter.

The carline beam terminal voltage drop is dropped as an important control indicator for the production of wire beam, which will affect the attenuation of the signal transmission, distortion, and also affect the service life, reliability and temperature rise of the plug -in. In severe cases Transformed. Therefore, the national standards, major OEMs, and wiring parts factories control the end voltage voltage of the terminal as an important indicator. The common test methods and judgment standards commonly used by the OEMs and Wiring Plants are often not uniform, restricting the development of wire beams.

1. Causes of the carrier beam terminal voltage drop

The terminal pressure connection relies on the interconnection of copper wire and the terminal to achieve electrical transmission. From a micro -physical point of view, any smooth solid surface on the outside is rough, uneven surfaces. Therefore, copper wire and terminals are not face -to -face contact, but point contact, and the actual contact area of the actual contact area.

The surface of the metal is generally covered with oxide film and other types of membrane layers. Within the actual contact range, only part of the broken membrane layer or voltage breakdown can form direct contact with metal and metal. Most of them are through the membrane. When layers are in contact with each other, the current can actually pass through the contact points that these are called "conductive spots". When the current is transmitted through the copper wire and the terminal, the current will concentrate through those small conductive spots and shrink the current beam near the conductive spots, as shown in Figure 2. Due to the contraction of the current beam near the conductive spots, the path that flows over the current increases and the effective conductive area is reduced. As a result, local additional resistors appear, called "contraction resistance" or "centralized resistance". R1 is represented by R1.

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