Automotive electronic harnesses need to be manufactured with several factors to consider to ensure that the harness does not have problems at work, the following Hangzhou harness processing plant to talk about the harness design to consider some of the factors to consider:
1, shielding performance design Both low-voltage harnesses and high-voltage harnesses need to be considered for electromagnetic shielding, and should be taken into account when designing the harness, including the selection of shielded wire, connectors, and related performance parameters to be quite familiar.
If the power cord is with the signal line, this shield interference problem should be noted when the harness is designed and machined. When the inner conductor and high-voltage connector of the high-voltage cable are connected, the cable braid comes into contact with the shield and a separate shielded metal braid is placed at the connector of the cable braid and connector. Enhancethed shielding. In order to improve the shielding performance of the high-voltage connector itself, the connector is designed with a metal housing. In order to improve the shielding performance of the connector connector interface, a shielding spring structure is used to ensure reliable contact between the plug and the socket housing, and the inner conductor of the connector head is lower than the interface of the housing to prevent the inner conductor from touching the fingers or other metals for some protection and increased safety, after insertion,
The socket connector and plug connector slyly come into contact with each other, allowing the mating surface to be isolated from the outside.
2, dust and waterproof The effects of dust and water on the harness are fatal, so be sure to be foolproof in dust and water resistance.
Each connector must be sealed to prevent dust and moisture from entering the harness and the risk of short circuits.
3, mechanical protection Because the high-voltage cable is large in diameter and requires a special wiring direction, the high-voltage harness must be mechanically protected.
Protection measures such as sealing rings are applied between connectors and connector connection cables.
3, service life design Friction with other spare parts and the life of the harness itself.
The selection of wear-resistant harness materials, stable and reliable connectors, in the design and processing process, strengthen the wire-to-wire connection, must ensure the number of plug-ins and high-voltage connector connection quality.
4, the overall structure design
The overall harness design must be safe and reliable, securely connected, and the overall material selection is reasonable.
5, harness performance test In order to verify the structural rationality of high-voltage and high-current contact technology in high-voltage harness design, contact area, contact resistance, vibration resistance, etc. Whether to meet the high reliability requirements, long life and high current performance, high-voltage harness samples in electric passenger cars have been developed, the corresponding performance tests in accordance with the corresponding design requirements. The structure of the contact structure, the connector and the design safety of the entire high-voltage with a certain degree of rationality.