2024-12-18
Crimp connection is to use tools or equipment to deform the connector joints and press them onto the wires through pressure, so that the terminals of the connector and the wires form a mechanical connection, giving them good mechanical and electrical properties. At present, there are three known connection methods for automobile wiring harnesses, but foreign wiring harness cables and plug-in terminals are basically connected by crimping. This process technology is very mature and stable and suitable for actual mass production.
Among them, the crimping height plays a vital influence on the crimping connection. The mechanical properties of crimped terminals will increase as the crimping height decreases, but after exceeding a certain critical value, the mechanical properties will drop rapidly; the electrical properties of crimped terminals will first increase as the crimping height decreases and then tend to level, and finally gradually decreased. Therefore, it is necessary to determine an appropriate crimping height to ensure good mechanical and electrical properties as much as possible.
Since traditional welding processes are no longer able to meet development needs, ultrasonic welding processes are gradually being used in the welding of high-voltage wire harnesses for new energy vehicles.
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