Flexible printed circuit (FPC) is a circuit board made of flexible copper clad laminate as the substrate. It is used as a medium for signal transmission in the connection of electronic products. It has the characteristics of high wiring assembly density, good bendability, lightweight, and flexible process. FPC can generally be divided into single-layer FPC, double-layer FPC, multi-layer FPC and soft-hard combination version.

At present, FPC has become the main choice for most new energy vehicle models and has been widely used in newly launched new energy vehicles.

For automobiles, whether it is fuel vehicles or smart vehicles, there are a large number of FPC applications, mainly in the automotive electronics sector. Automotive electronics is the general term for automotive electronic control devices and automotive electronic control devices. It mainly includes engine control systems, chassis control systems and automotive electronic control systems; and from the perspective of structure, space, etc., new energy vehicles in the future will definitely use FPC to replace wiring harnesses in large quantities, and will be applied in multiple parts of the vehicle. Therefore, FPC technology is a very important trend in automotive electronics, especially smart cars, especially in battery BMS, vehicle lighting systems, door control systems, camera modules, etc.;