In the fast-evolving world of automotive electronics, Flexible Printed Circuit (FPC) and Printed Circuit Board (PCB) are the unsung heroes powering everything from a car's battery management system to its high-tech infotainment setup. As we look towards 2025 and beyond, their role is set to become even more crucial, driving innovation and enhancing vehicle performance.
FPCs and PCBs are everywhere in modern cars. In the battery management system (BMS) of electric vehicles (EVs), for example, FPCs are a game-changer. With their ability to bend and flex, they fit the complex geometry of battery packs precisely—not just for a snug fit, but for critical functionality. In a Tesla Model Y, the FPC in the BMS connects numerous battery cells, enabling accurate, real-time transmission of data like cell voltage, temperature, and charge state. This data lets the BMS optimize battery performance, prevent overcharging/discharging, and extend both battery lifespan and vehicle range.
They also shine in vehicle lighting systems. LEDs (now standard in headlights, taillights, and interior lighting) rely on PCBs for power control and lighting pattern adjustment. In luxury cars like the Mercedes-Benz S-Class, advanced PCBs enable adaptive headlights that tweak beams based on driving conditions. FPCs, meanwhile, handle flexible lighting needs—think bendable ambient light strips in high-end cars—that boost interior aesthetics and comfort.
Space-saving design is a top advantage of FPCs. As cars grow more electrified and packed with electronics, space is precious. A single FPC can replace multiple traditional wires and connectors, cutting occupied space. In a compact EV like the Nissan Leaf, FPCs in door control systems integrate power window control, door locks, and speaker connections in a small, organized area—simplifying wiring harnesses and easing maintenance/assembly.
Flexibility is another key strength of FPCs. They withstand repeated bending and twisting, critical for automotive components exposed to vibrations and movement. In a car’s suspension system, FPC-connected sensors detect road surface changes; the FPCs’ ability to flex without breaking keeps sensors functional even on long-term bumpy road use.
PCBs, by contrast, offer high-density interconnectivity. Modern cars with advanced driver-assistance systems (ADAS) need to integrate multiple sensors, processors, and communication modules. High-layer PCBs (16 or 24 layers) fit dozens of components in a small space. In an Audi A8 with Level 3 autonomy, the ADAS module’s PCB connects radar, lidar, cameras, and powerful processors—enabling seamless data processing for features like automatic emergency braking and lane-keeping assist.
By 2025, FPCs and PCBs will grow even more integral to autonomous driving. As Level 4 and 5 self-driving cars develop, demand for high-speed, reliable data transmission will surge. FPCs with better signal integrity and high-frequency performance will link sensors and computing units—for example, in Waymo’s self-driving trucks, FPCs will connect lidar sensor arrays, ensuring real-time data for accurate mapping and obstacle detection.
Lightweighting will also drive FPC use. Beyond replacing traditional wiring, FPCs may integrate into future car body structures as “structural electronics”—conducting electricity while boosting the frame’s strength and flexibility, cutting weight and improving energy efficiency.
In smart cockpits, PCBs will be the core of integrated displays, touch controls, and in-car entertainment. By 2025, higher-integration PCBs will handle complex graphics and high-speed data for in-car AR/VR—like in the BMW iNext concept car, where the infotainment PCB supports AR navigation and immersive gaming, while staying connected to the driver’s mobile devices.
Founded in 2009, our company has deep roots in the production of various circuit boards. We are dedicated to laying a solid electronic foundation and providing key support for the development of diverse industries.
Whether you are engaged in electronic manufacturing, smart device R&D, or any other field with circuit board needs, feel free to reach out to us via email at sales06@kbefpc.com. We look forward to addressing your inquiries, customizing solutions, and sincerely invite partners from all sectors to consult and collaborate, exploring new possibilities in the industry together.
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