{"project":{"acronym":"","projectId":93328,"title":"Active Battery Management System with Physics Based Life Modeling Topology","startTrl":2,"currentTrl":4,"endTrl":4,"benefits":"This project is targeted for NASA's X-planes with lithium based energy storage systems. The X57 Maxwell is the target application, however, other X-planes, as well as Space applications may re-use the research to extend pack life, and avoid unpredicted Thermal Events. Vertical Take off & Lift working groups studying air taxi transportation.
All commercial aviation applications with a lithium ion battery have the ability to benefit from this research. No deployed Li-Ion battery system in Aviation today has an active topology. This is due to the stringent FAA DO311 requirements which require designers to show that their systems can meet a 1E-9 probability requirement of failed condition occurring such as overcharge. This is achieved through redundancy and the elimination of single point failures. With charge current being transferred from cell to cell, no one has achieved a cost effective design that meets the 1e-9 requirement. If the TRL is advanced on such a topology, the economics of lithium becomes much more compelling given the much improved cycle life. Other key markets who could benefit from Research would be the Air Taxi Manufacturers. Much of their business model is based on the economic properties of the battery. Right now cell manufacturers who are achieving the energy density targets for the application are no where near the cycle life requirement to make this market viable. This technology fills a critical gap in both cycle life and certification aspects.","description":"Robust Data Acquisition on flight applications enables Researchers to rapidly advance technology. Distributed Electric Propulsion (DEP) and Hybrid Electric architectures rely heavily on batteries to achieve fuel efficiency and reduced CO2 emissions. DEP Aircraft of the future have demands for Energy Storage Systems with large counts of cells put in series and parallel to achieve needed voltage and energy levels. The X57 Maxwell Battery comprises of over 6000 cells. As the pack goes through repeated charge/discharge cycles, as well as environmental cycles, each individual cell begins to lose its capacity. Cell to cell capacity variation causes the entire pack to limited by the weakest cell. Traditional Passive Balancing topologies are limited in their ability to address cell mismatch on the discharge cycle. Active balancing allows a dynamic measurement & control system to discharge cells at variable rates. With a more robust measurement & control architecture, Active topologies have the ability to integrate more advanced algorithms. These algorithms include predictive health monitoring, life based management, physics based cell modelling. Batteries can last longer, avoid thermal runaway, and avoid maintenance. EPS is proposing development of an active BMS concept, with associated algorithms to achieve a 40% life improvement on the X57 pack.","startYear":2017,"startMonth":6,"endYear":2017,"endMonth":12,"statusDescription":"Completed","principalInvestigators":[{"contactId":383592,"canUserEdit":false,"firstName":"Randy","lastName":"Dunn","fullName":"Randy Dunn","fullNameInverted":"Dunn, Randy","primaryEmail":"Randy.Dunn@Ep-Sys.Net","publicEmail":true,"nacontact":false}],"programDirectors":[{"contactId":206378,"canUserEdit":false,"firstName":"Jason","lastName":"Kessler","fullName":"Jason L Kessler","fullNameInverted":"Kessler, Jason L","middleInitial":"L","primaryEmail":"jason.l.kessler@nasa.gov","publicEmail":true,"nacontact":false}],"programExecutives":[{"contactId":215154,"canUserEdit":false,"firstName":"Jennifer","lastName":"Gustetic","fullName":"Jennifer L Gustetic","fullNameInverted":"Gustetic, Jennifer 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Management System with Physics Based Life Modeling Topology","startTrl":4,"currentTrl":6,"endTrl":6,"benefits":"This project is targeted for NASA's X-planes with lithium based energy storage systems. The X57 Maxwell is the target application, however, other X-planes, as well as Space applications may re-use the research to extend pack life, and avoid unpredicted Thermal Events. Vertical Take off & Lift working groups studying air taxi transportation.
All commercial aviation applications with a lithium ion battery have the ability to benefit from this research. No deployed Li-Ion battery system in Aviation today has an active topology. This is due to the stringent FAA DO311 requirements which require designers to show that their systems can meet a 1E-9 probability requirement of failed condition occurring such as overcharge. This is achieved through redundancy and the elimination of single point failures. With charge current being transferred from cell to cell, no one has achieved a cost effective design that meets the 1e-9 requirement. If the TRL is advanced on such a topology, the economics of lithium becomes much more compelling given the much improved cycle life. Other key markets who could benefit from Research would be the Air Taxi Manufacturers. Much of their business model is based on the economic properties of the battery. Right now cell manufacturers who are achieving the energy density targets for the application are no where near the cycle life requirement to make this market viable. This technology fills a critical gap in both cycle life and certification aspects.","description":"Robust Data Acquisition on flight applications enables Researchers to rapidly advance technology. Distributed Electric Propulsion (DEP) and Hybrid Electric architectures rely heavily on batteries to achieve fuel efficiency and reduced CO2 emissions. DEP Aircraft of the future have demands for Energy Storage Systems with large counts of cells put in series and parallel to achieve needed voltage and energy levels. The X57 Maxwell Battery comprises of over 6000 cells. As the pack goes through repeated charge/discharge cycles, as well as environmental cycles, each individual cell begins to lose its capacity. Advanced high energy density chemistries (>300Wh kg) are particularly vulnerable. Cell to cell capacity variation causes the entire pack to be limited by the weakest cell. Traditional Passive Balancing topologies are limited in their ability to address cell mismatch on the discharge cycle. Active balancing allows a dynamic measurement & control system to discharge cells at variable rates. With a more robust measurement & control architecture, Active topologies have the ability to integrate more advanced algorithms. These algorithms include predictive health monitoring, life based management, physics based cell modelling. Batteries can last longer, avoid thermal runaway, and avoid maintenance. EPS is proposing development of an active BMS concept, with associated algorithms to achieve a 40% life improvement on the X57.","startYear":2018,"startMonth":5,"endYear":2022,"endMonth":6,"statusDescription":"Completed","website":"","program":{"acronym":"SBIR/STTR","active":true,"description":"
The NASA SBIR and STTR programs fund the research, development, and demonstration of innovative technologies that fulfill NASA needs as described in the annual Solicitations and have significant potential for successful commercialization. If you are a small business concern (SBC) with 500 or fewer employees or a non-profit RI such as a university or a research laboratory with ties to an SBC, then NASA encourages you to learn more about the SBIR and STTR programs as a potential source of seed funding for the development of your innovations.
The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
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The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
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