EV Charging Control System Managing Renewable Power Fluctuations

The patent divides the adjustment function into two parts: (1) individual EV battery controllers that independently control charging speed within each vehicle, and (2) external controllers that manage ON/OFF states of multiple vehicles. This segmentation allows using existing EV batteries rather than requiring new high-capacity storage batteries, thereby reducing installation and operating costs while maintaining adjustment capability.

Each EV battery controller autonomously controls the charging speed of its own battery based on local conditions, without requiring centralized control of individual vehicles. This self-service approach enables the system to achieve coordination effects through distributed control, reducing the need for expensive infrastructure while maintaining the ability to adjust power fluctuations.

The patent implements a two-level control system where the external controller provides simple ON/OFF commands (low complexity) and the internal battery controller dynamically adjusts charging speed continuously (high adaptability). This dynamic division of control functions allows the system to maintain both simplicity in external management and flexibility in charging adjustment.

The battery controller inside each EV acts as an intermediary between the simple external ON/OFF control signal and the complex continuous charging speed adjustment requirement. It receives basic commands from outside and translates them into precise continuous control actions, bridging the gap between system simplicity and operational flexibility.