Energy-Storage EV Charging for Fast Output Without Grid Upgrades

The patent introduces an energy storage apparatus as an intermediary component between the power grid and the battery apparatus. This energy storage system buffers the power flow, allowing the charging station to deliver high power to the battery while drawing lower power from the grid over time. The energy storage apparatus acts as a mediator that decouples the instantaneous charging power demand from the grid input power requirement, enabling fast charging without requiring costly grid infrastructure upgrades.

The patent extracts the power amplification function from the traditional transformer-based approach and relocates it to an energy storage apparatus. Instead of using large-capacity transformers or multiple external transformers to step up power capacity, the system uses the energy storage system to accumulate energy and release it at high power rates. This extraction of the power boosting function from passive transformation to active energy management simplifies the transformer configuration and reduces device complexity.

The patent specifies a minimum energy density threshold of 380 Wh/L for the energy storage apparatus, representing a parameter change that optimizes the balance between compactness and manufacturability. By setting this specific parameter threshold, the system achieves high energy density while maintaining reasonable manufacturing precision requirements. This parameter specification enables the energy storage system to be compact without requiring extreme manufacturing tolerances that would be difficult to achieve in practice.