[Shanghai · Lingang] Recently, CAIT’s first fully processed mass production unit of the Intelligent PDC2.0 (Power Distribution Controller, an intelligent low-voltage power supply system) rolled off the production line at the Shanghai Lingang Testing and Validation Center! The production line is planned to achieve an annual capacity of 600,000 units.

The PDC2.0 is one of the core components of CATL Bedrock Chassis and is commonly referred to as the “small battery.” It enables dynamic conversion between the vehicle’s high-voltage and low-voltage power sources—for example, it can wake up the high-voltage battery management system (BMS) when the vehicle is in sleep mode, ensuring normal vehicle startup.

Based on EFUSE control technology and an integrated 12V lithium battery design, the PDC2.0 provides power redundancy, intelligent distribution, and management from the chassis to the whole vehicle. This effectively improves the reliability and stability of the vehicle’s power system, achieving a maintenance-free, visualizable power system. Additionally, the integrated low-voltage power supply and distribution design allows real-time monitoring of the lithium battery status, reducing the vehicle’s overall low-voltage power consumption.

Thanks to its lightweight, long-life, and intelligent features, the CAIT Intelligent PDC2.0 has become one of the most popular products among OEM customers.

• Lightweight: Compared with traditional fuse box solutions, the PDC2.0 uses EFUSE technology to further optimize harness wiring diameters and replaces the conventional lead-acid battery with a 12V lithium battery, resulting in a total weight reduction of over 60%.
• Long Life: Using a lithium battery, the PDC2.0 offers a longer service life than traditional lead-acid battery solutions, eliminating the need for replacement during the vehicle’s lifecycle.
• Intelligent: Equipped with smart fuses and a lithium battery, the PDC2.0 enables intelligent distribution channel management, meeting the low-voltage power redundancy requirements for intelligent driving. Features include smart current and voltage detection with adjustable protection thresholds, mode-based intelligent circuit control according to vehicle operating modes, and early warnings by intelligently identifying abnormal vehicle components based on driving conditions.

The PDC serves as the energy and control center of the CATL Bedrock Chassis low-voltage system, enabling more convenient decoupling between the upper and lower vehicle bodies. For the lower body, the PDC2.0 can provide individual power supply to each electrical load based on the actual demand, ensuring reliable power delivery. For the upper body, 3 to 6 primary distribution channels supply power to different body area controllers, allowing rapid adaptation to various vehicle models while maintaining the upper body’s operational flexibility.