In the new energy industry, FFC connectors and CCS connectors play critical roles in signal transmission and power delivery, respectively. FFC connectors (Flexible Flat Cable connectors) are mainly used for internal connections between components such as Battery Management Systems (BMS), control modules, and sensors. They handle low-current, low-voltage signal transmission and are characterized by their compact size, lightweight design, flexible routing, and high integration—making them ideal for space-constrained, high-density applications. In contrast, CCS connectors (Combined Charging System interfaces) are the standard interface for DC fast charging in electric vehicles. They support high-voltage, high-current power transfer and integrate communication and safety protection features to ensure charging efficiency and safety. Widely used in electric vehicles, charging stations, and energy storage systems, FFC connectors facilitate intelligent internal communication, while CCS connectors ensure efficient energy replenishment for the entire vehicle. Together, they form a complementary pair that supports a complete energy management and transmission network in new energy systems.