Selection of automotive high-voltage cable shielding

The battery and motor are mainly responsible for the power supply and charging of the vehicle. To drive the car, you need to convert DC power into AC power through an inverter or converter, or convert AC power into DC power to charge the battery. This process requires the use of a drive system. The IGBT repeatedly pulls the inverter to work. This process will produce electromagnetic interference, and as the voltage platform increases, the electromagnetic interference becomes more and more serious.

The difference between electric vehicles and traditional fuel vehicles is that electric vehicles rely on electric components to drive, and the two common core electric components are batteries and motors. In order to achieve a higher endurance, it is usually necessary to equip a higher-power drive motor. This is Requires higher voltage on the high voltage bus.

At this time, new energy vehicle high-voltage wiring harnesses need to adopt shielding designs to limit radiation to specific areas or prevent radiation from entering specific areas. A common wire harness shielding design uses braided tinned copper to isolate the cable conductor from the external environment, thereby achieving a good shielding effect.

The wire harness is mainly composed of connectors and cables. Its shielding methods are roughly divided into three types. One is single-core shielding, that is, each cable is shielded and the part connected to the connector shield is within its sealing range. This shielding is the main connection method in our country; the second is overall shielding, which uses shielded metal braiding to directly wrap the cable; the third is single-core single-strand shielding, which has poor performance where it is connected to the connector. protective effect.

For specification support at any stage of electric vehicle connectivity, whether to European standards or international markets, please contact our cables website. Please search: OMG EV HV Cable