The transition from traditional Flexible Printed Circuits (FPC) to Flexible Die-Cut Circuits (FDC) for low-voltage signal transmission is driven by the need for more sustainable and cost-effective wiring options that do not compromise on performance.
Flexible die-cut circuit (FDC) technology serves as a more cost-effective and sustainable alternative for producing flexible circuits for low-voltage signals in EV battery cell contacting systems. This addresses the strict industry requirement for cost-effective and efficient battery cell contacting systems without sacrificing quality.
How Does FDC Technology Reduce Manufacturing Costs?
Automotive engineers frequently face the challenge of optimizing high-voltage battery designs under strict budget constraints. Because FPCs are custom-manufactured for highly specific layouts through intricate processing, they tend to be the most expensive component of the current collector assembly.
ENNOVI’s FDC Technology presents a budget-friendly alternative that solves this issue. By utilizing FDCs, cost savings of up to 50% are achievable without any compromise in technical capabilities. This significant reduction presents FDCs as a highly effective, cost-efficient wiring option for EV manufacturers.
Why Is the Manufacturing Cycle Time Faster with FDC?
The distinct turnaround advantage of FDC centers entirely on the elimination of complex manufacturing steps. Traditional FPCs rely on a multi-stage, batch photolithography framework. This batch structure limits output sizes and requires production lines to halt between cycles, creating built-in production delays.
Conversely, flexible die-cut circuit (FDC) technology utilizes a continuous die-cut process via reel-to-reel manufacturing, which entails fewer processes. By eliminating the lengthy chemical etching procedures, FDC technology features a faster cycle time as it cuts production process steps by 50% and reduces overall process time by 50% compared to its printed counterpart.
What Makes FDC a More Sustainable Choice for the Environment?
Green manufacturing practices are essential to achieving true end-to-end supply chain sustainability in the EV era. FPC production presents a significant environmental bottleneck for being manufactured through a process that etches copper onto the circuit. This chemistry-driven process uses harsh, corrosive substances to dissolve away unneeded sections of a copper sheet, a process that is both time- and energy-consuming and makes copper recycling difficult, making it hardly sustainable.
FDC technology introduces an inherently sustainable, clean mechanical die-cutting production process. Produced through reel-to-reel manufacturing, FDCs entail fewer processes. This technology promotes sustainability because it can instantly recycle clean copper waste material thanks to the die-cutting process, offering greater efficiency and a lower impact on the environment.
Does FDC Maintain Performance Parity with FPC Standards?
Flexible die-cut circuits perform very similarly to FPCs, but unlike them, FDCs do not have a size limitation. The results of FDC technology have been confirmed through strict tests of dimensions, thermal shock, trace resistance, temperature rise, insulation resistance, and high voltage.
- Dielectric Materials: The dielectric layer of flexible die-cut circuits comes in two options: polyimide (PI) and polyethylene terephthalate (PET). PI has excellent flexibility, tensile strength, thermal conductivity, and chemical resistance. Meanwhile, PET also has good flexibility as well as high chemical and moisture resistance.
- Traces: FDC technology provides high-precision die-cutting that results in tight tolerances, while continuous copper traces provide a reliable signal. Furthermore, the double stack layer traces have the capability to enhance packaging efficiency.
- Application and Sizing: Our FDC approach is suitable for traces with a diameter of 0.35mm and above, and the size and trace design can be customized for your end applications. Ultimately, FDC technology provides a more sustainable way to produce flexible circuits for low voltage signals in EV battery cell contacting systems.
The Future of EV Connectivity: Why FDC Is the Smarter Circuit Solution
FDC technology balances high-performance requirements with aggressive cost and sustainability targets, making it the smarter circuit solution for modern EVs. EV manufacturers and engineers are encouraged to consult with manufacturing experts to evaluate their specific trace design and fuse requirements for a seamless transition, as the size and trace design can be customized for end applications.
Contact our team to request a technical comparison and start the switch to more efficient battery cell contacting systems.
Sources:
- Achieving Versatility in EV Battery Connectivity through FDC
- Game-Changer in EV Battery Manufacturing: Ennovi’s Flexible Die-cut Circuit (FDC)
- Flexible Die-cut Circuit (FDC) vs Flexible Printed Circuits (FPC): Which is the better option for you?
- How Ennovi’s FDC Redefines Cost-Effective Circuit Design for EV Batteries