BEV Charge Buffer Control for Regenerative Braking Capacity

The system performs preliminary calculation of the buffer state of charge before charging at external charging stations. The server determines the current state of charge, calculates the buffer (difference between maximum capacity and target state of charge), and communicates this to the charging station. The charging process is then controlled to stop when the buffer is reached, preventing battery overload while maximizing energy storage capacity.

The buffer state of charge is made dynamic rather than static. The system continuously monitors the current state of charge during operation and recalculates the buffer based on real-time conditions. When the current state of charge approaches the target, the buffer decreases, allowing more battery capacity to be utilized. This dynamic adjustment optimizes vehicle range while maintaining battery protection.

The system uses the battery's existing energy storage capability to fulfill the Type II-A test requirements through intelligent energy management. By calculating and controlling the buffer state of charge, the system enables regenerative braking to absorb excess energy during downhill sections without requiring additional braking devices. The battery serves itself as the energy absorption mechanism, eliminating the need for complex additional braking systems.

The system performs preliminary calculation of the buffer state of charge before charging, allowing the target state of charge to be set to maximum while preventing actual overload. The server calculates the buffer based on route information, vehicle mass, and energy consumption data, then communicates this to the charging station. During operation, when the buffer is reached, regenerative braking automatically activates to maintain the target state of charge, preserving full regenerative braking capability while maximizing range.