Not Available

Not Available This proposal addresses the need for monitoring and control of change and temperature at the cell level of battery energy storage systems. While battery energy storage systems based on any cell electrochemistry can benefit from this cell-wise monitoring and control, the lithium-ion electrochemistry requires cell-wise charge and thermal management. The proposed system specifically addresses the requirements of high-voltage (>24V) high power battery energy storage systems in several innovative ways. The modular approach, by providing sensors, charge management, and thermal management at each cell permits scaling of the system to any number of cells for any pack voltage. The system architecture provides voltage isolation for circuit protection and safety and it may be applied to battery energy storage systems that employ a wide range of cell electrochemistries. The implementation is lightweight and provides a means for cost effective production in high volumes to ultimately serve commercial markets. The proposed technology has application to battery energy storage systems for spacecraft, aircraft, electric vehicles, Power quality management systems, and uninteruptable power supplies as well as a host of other applications. APRI has assembled a multidisciplinary team with all of the requisite experience to engineer the proposed system.