7116-4110-02 7116-4111-02 7116-4112-02 Auto Wire Terminal Crimp Loose Splice For Car Electric Connector

4 solution

Based on the problems encountered in the application of aluminum wires in the car line, the problem of terminal and connection needs to be mainly solved. Special terminals are copper and aluminum terminals processed by friction welding (Figure 2).

Fricating welding refers to the problem of copper -aluminum connection through the form of friction welding connection between the copper end of the terminal through friction welding and aluminum end pressure connection area.

1) Quartet pressure connection method. This pressure connection method is to use the aluminum pressure connection and aluminum wires of the copper aluminum terminal to press the pressure, so that the aluminum of the two forms but the same material is pressed together through a special pressure connection tool. The same can ensure the perfect fusion after pressure connection, thereby reducing the resistance. This pressure connection method has been used to this day, and it has been optimized in terms of terminal design and pressure connection process. It is shorter, but does not reduce the pressure connection process of reliability. As shown in Figure 3 and Figure 4.

2) Ultrasonic welding method. Ultrasonic welding is an emerging processing technology that introduces the wire beam processing industry in recent years. Use high -frequency vibration waves to pass to the surface of the two objects that need to be welded. In the case of pressurizing, the surface of the two objects can be rubbed to each other to form a fusion between molecular layers. Copper aluminum super -raw wave welding is shown in Figure 5.

Copper and aluminum have a common characteristic as two different metals. In the metal structure, they belong to the facial cubic structure, which provides opportunities for the possibility of the two through ultrasonic welding. In the case of pressurizing, through high -frequency vibration waves, the single -silk aluminum surface oxidation layer in aluminum wires is destroyed, and a cold welding state is formed between single -silk aluminum, which is integrated into one. The interchange invasion has formed a transitional layer of copper and aluminum alloy, and a cold welding state of aluminum wires and copper terminals is formed.

Through the ultrasonic welding process, the problems such as electrochemical corrosion, metal creep, and electrical properties at the connection between copper aluminum are solved.

At present, the connection form of friction welding pressure connection and ultrasonic welding has become a mainstream solution to the application of automotive aluminum wire application in the industry. Some auto manufacturers use the connection form of friction welding pressure connection. It is the connection form of ultrasonic welding. Aluminum wire has been widely promoted in the field of low -voltage wire beam.

In the actual application process of aluminum wires, the aluminum wire is increased due to the replacement of copper conductors, and in the vehicle environment, the space layout is a big problem, and the vehicle space is limited. When the wire diameter increases, the risk of interference in the entire vehicle parts is generated.

The copper ends of the copper aluminum terminal are connected with the aluminum end through friction and welding. During the friction welding process, the copper aluminum alloy transition area is formed, which effectively solves the problem of electrochemical corrosion and metal creeping between copper and aluminum. The aluminum end of the copper aluminum terminal is connected to the aluminum wire through the hydraulic pressure. During the pressure connection, the aluminum wire and the surface layer oxide film of aluminum wires and aluminum -ending are effectively destroyed, forming an effective connection between aluminum metal, and the expectations of electrical performance. At the same time, after hydraulic pressure connection, there is a certain amount of pressure preservation time, which releases the stress generated during the pressure connection, forming a cold welding state between aluminum end and aluminum wires, which has achieved good maintenance and met mechanical performance expectations.

At present, there are usually two connection methods for the application of large square aluminum wires. These are also two different connections adopted for the design of the two different terminals, which are the square crushing methods for copper and aluminum pipelines to connect aluminum wires. There is also an ultrasonic welding method connected to the copper terminal and aluminum wire.

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