Parallel Energy Storage Charging Control for Battery Energy Mismatch

The patent applies local quality by making each energy storage unit have different output current characteristics based on its individual state (SOC, temperature, capacity). The control system adjusts each unit's output current locally according to its own parameters rather than treating all units uniformly, thereby preventing energy mismatch and improving overall energy transmission efficiency while maintaining high charging capacity.

The patent changes the operating parameters (output current, voltage) of each energy storage unit dynamically based on real-time monitoring of their states. By adjusting parameters individually for each unit according to its capacity, temperature, and charge state, the system optimizes energy distribution and prevents mismatch, resolving the contradiction between high charging capacity and energy transmission efficiency.

The patent segments the energy storage system into multiple independent energy storage units, each with its own DC/DC converter and control system. This segmentation allows the system to achieve high total capacity through parallel connection while each individual unit operates within optimal capacity ranges, preventing any single unit from being the bottleneck and enabling fast charging capability without being limited by individual unit capacity.

The patent implements dynamic control where the output current of each energy storage unit is continuously adjusted based on real-time monitoring of the traction battery's charging state and the energy storage units' conditions. This dynamic adjustment allows the system to maximize charging speed while adapting to changing capacity requirements, transforming the static capacity limitation into a dynamic optimization problem that can be solved through real-time control.