The shielding technology of wire harnesses and its importance have been widely applied and discussed in multiple fields. The following is a detailed answer based on the latest search results:

Shielding technology for wire harnesses

braiding

Structure and Materials: Braided shielding is usually made of tin plated copper wire, which has good conductivity and flexibility. The coverage and weaving angle of the weaving layer have a significant impact on its shielding effect. Generally speaking, the higher the coverage of the woven layer, the better the shielding effect

Application: Braided shielding is widely used in high-voltage wire harnesses and high-frequency signal wire harnesses, which can effectively prevent low-frequency and high-frequency electromagnetic interference

Metal foil shielding

Structure and Materials: Metal foil shielding usually uses aluminum foil, which has good conductivity and shielding effectiveness, mainly used to prevent high-frequency interference

Application: Metal foil shielding is commonly used in high-voltage wire harnesses and communication cables, which can effectively reduce electromagnetic radiation and external electromagnetic interference

Composite shielding

Structure and Materials: Composite shielding combines the advantages of braided shielding and metal foil shielding, typically consisting of metal foil and braided layers, which can simultaneously prevent low-frequency and high-frequency interference

Application: Composite shielding is widely used in high-voltage wiring harnesses of new energy vehicles to ensure the stability and safety of high-voltage power transmission

Shielding sleeve shielding

Structure and Materials: Shielding sleeves are usually made of conductive materials, which can effectively isolate electromagnetic interference

Application: Shielding sleeves are suitable for wiring harnesses that require additional protection, such as industrial wiring harnesses used in harsh environments

Filter shielding

Structure and materials: Filter shielding suppresses high-frequency noise by adding LC filters or common mode filters at the power input end

Application: Filter shielding is widely used in automotive electronic devices, which can effectively reduce electromagnetic interference

The importance of wire harness shielding technology

Reduce electromagnetic interference

Shielding technology can effectively reduce electromagnetic interference, ensuring the accuracy and stability of signal transmission. This is particularly important for complex systems such as automotive electronic systems and industrial automation equipment

For example, in new energy vehicles, shielding the high-voltage wiring harness can prevent electromagnetic interference from affecting the normal operation of the onboard low-voltage electrical appliances

Improve system reliability

Shielding technology can improve the anti-interference ability and reliability of wire harnesses, reducing equipment failures caused by electromagnetic interference. This is crucial for ensuring the safe operation of automobiles and industrial equipment

For example, in industrial automation, shielding wire harnesses can prevent electromagnetic interference from affecting the normal operation of sensors and controllers

Protect device and user safety

Shielding technology can prevent electromagnetic radiation from causing adverse effects on equipment and users, protecting the normal operation of equipment and the health of users

For example, in new energy vehicles, shielding high-voltage wiring harnesses can prevent electromagnetic radiation from interfering with the normal operation of other electronic devices

Optimize electromagnetic compatibility

Shielding technology can optimize the electromagnetic compatibility of equipment and ensure its normal operation in complex electromagnetic environments

For example, in automotive electronic devices, reasonable shielding design can meet international and domestic electromagnetic compatibility standards

Extend the service life of the wiring harness

Shielding technology can improve the durability and anti-aging characteristics of the harness and extend the service life of the harness

For example, shielded wire harnesses made of high-quality materials and sophisticated manufacturing processes can work stably for a long time in harsh environments