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- W2069932 abstract "Jet Propulsion Laboratory (JPL) has been pursing miniaturized power sources for aerospace applications. In the area of power storage, they have developed a rechargeable solid state micro-scale lithium battery, rated at 4.25 V with a 50 nAH capacity. It is fabricated on a single 4-inch wafer using microelectronic fabrication techniques. Up to 20,000 microbatteries can be fabricated on a single wafer. A system to charge, discharge and monitor the status of each microbattery is required to utilize the microbatteries in practical applications. This Ph.D. dissertation describes the development of a novel N+ Switch Array Matrix (N+ SAM) topology. This topology is unique in its dynamic reconfiguration ability by providing selective connection and isolation and it is versatile in its core design by incorporating passive, active or energy storage elements. It is customized for the microbatteries to provide selective voltage and capacity ratios by reconfiguring the microbatteries during the charge or discharge cycle. In addition, a microbattery model and a categorization model have been developed to identify the status of each microbattery in the topology at any given time. An Intelligent Power Management System has been developed based on the N+ SAM topology to provide user-defined methods and connections for charging and discharging arbitrary number N microbatteries connected in series, parallel, or series-parallel configurations. Using the categorization model, the system provides real time information regarding the condition and status of each microbattery. Using the microbattery model, the system also provides real time fault tolerant capabilities and protection using voltage setting to terminate the charge and discharge if required. A two microbattery prototype circuit has been designed and built using a microprocessor-based controller and off-the-shelf components for the verification of the system's operation. The results of the prototype circuit are presented. Finally, the system sub-circuit components have been designed using specialized technologies that are suitable for integrated circuit applications. Test results of the fabricated circuits are reported to verify the operational results." @default.
- W2069932 created "2016-06-24" @default.
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- W2069932 date "2005-01-01" @default.
- W2069932 modified "2023-09-23" @default.
- W2069932 title "Intelligent power management system for n+ rechargeable solid-state microscale batteries" @default.
- W2069932 hasPublicationYear "2005" @default.
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