963531-1 1928301087 357 972 840 963531-2 Auto Waterproof Plug Silicone Rubber Seal Connectors

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.

5 improvement and application of new technology and process methods

1) The method of mixed welding of copper and aluminum lines is shown in Figure 6. This hybrid welding scheme is suitable for long, large square meters of battery line solutions.

This solution can be considered according to the layout direction and space of the 3D layout stage. For example, in a space, there is a generous space in a space to accommodate the line diameter of the aluminum wire. The space of the end -hole terminal connecting the electrical side is limited, and the copper wire solution can be adopted. In this way, the hybrid use of the two wires can perfectly solve the problem of uneven space. It is also considered for the lightweight direction of the wire beam and reducing the cost direction.

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