Battery Management, Monitoring and Diagnostic Device for Navy Energy Storage Modules
Navy SBIR FY2011.3


Sol No.: Navy SBIR FY2011.3
Topic No.: N113-177
Topic Title: Battery Management, Monitoring and Diagnostic Device for Navy Energy Storage Modules
Proposal No.: N113-177-0039
Firm: Williams-Pyro,Inc.
200 Greenleaf St.
Fort Worth, Texas 76107-1471
Contact: Matthew Ragsdale
Phone: (817) 872-1500
Web Site: www.williams-pyro.com
Abstract: Williams-Pyro, Inc. proposes to develop a Smart Energy Management System (SEMS) capable of advanced battery state-of-health diagnostics without the dependence on previous battery data. This powerful state-of-health diagnostics, coupled with extensive safety parameters to prevent abuse and a distributed communications network, will provide complete conditional awareness of the battery system. None of the battery management systems used today have a true state-of-health diagnostic, but instead rely on meticulous records over time to track a battery's decline. This log book dependence makes these systems sensitive to data loss and minor measurement errors that can build up over time; moreover, these systems are completely unable to predict accurate state-of-health without an adequately long battery history starting from first use, which completely breaks down if used batteries are ever moved. In contrast, Williams-Pyro will develop a neural network-based battery diagnostics system derived from an understanding of battery chemistry with no dependence on battery history. This technology will manage and diagnose the state-of-health of many different battery chemistries and even distinguish between them if needed, all while relying only on real-time data acquisition.
Benefits: While it will be compatible with a variety of battery types and sizes, SEMS will be initially targeted at the lead acid batteries used in Tier 1 of the Littoral Combat Ship (LCS). Simple changes in the monitoring algorithm will allow SEMS to identify other battery chemistries and provide the same monitoring and control capabilities. Algorithms can also be developed for other forms of energy storage. On new ship designs like the DDG 1000 Zumwalt, battery storage will be an essential part of the ship's Integrated Power System (IPS). On older ship designs, batteries are used to act as a buffer to peak loading spikes on the ship's power generation system or for uninterruptable power supplies (UPS) for critical equipment. As new systems are installed on older ships, the electric power requirements will continually need to be considered. Thus, SEMS technology will be beneficial to both new and old ships. SEMS will benefit the Navy in several ways. It will monitor rates of charge and discharge and the state-of-charge in the storage system. It will monitor the health of the system and identify individual faulty cells in the system before they result in high cost or dangerous faults and failures. This will provide a positive impact to the Navy's goals of reducing fuel consumption, lowering operation and maintenance costs, and improving safety on ships. Our solution, with minor changes, can also be used on other applications such as Marine Combat Operations Centers (COCs) or Army Forward Operating Bases (FOBs). In addition, SEMS can be used to monitor battery modules on commercial ships and buildings utilizing alternative energy sources and energy storage. There is also demand for systems such as SEMS in government and commercial buildings where alternative energy sources are being utilized. Potential applications are: * US Navy - Monitor and control energy storage modules on Navy's LCS , DDG, or other ships. * US Marines and Army - Monitor energy storage modules supporting 5kW-200kW micro-grid systems for COCs and FOBs. * Commercial Shipping - Monitor and control bulk and distributed energy storage systems. * Government and Commercial Buildings - Monitor and control energy storage modules connected to alternative energy sources.

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