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Design safety used in nasa's human-rated primary lithium batteries
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jeevarajan, J. |
| Copyright Year | 2013 |
| Description | Single cell tests were benign for external short, inadvertent charge and overdischarge into reversal up to 4.5 A. At lower current loads cells die (may be due to excessive dendrite formation) benignly. String level external short circuits lead to an unbalanced overdischarge, with one cell going into reversal. The result is catastrophic violent venting. Unbalanced string overdischarges at different currents causes catastrophic violent venting also. Heat-to-vent is very dramatic displaying violent venting Simulated internal short is also catastrophic and displays violent venting. Battery is not UL-rated; hence does not have dual-fault tolerance or tolerance to inherent cell tolerance to failures Battery Design for NASA JSC's human-rated application for use on ISS was changed to include two bypass diodes per cell to provide for two-failure tolerance to overdischarge into reversal (and external short) hazards. |
| File Size | 930271 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140003135 |
| Archival Resource Key | ark:/13960/t6547q796 |
| Language | English |
| Publisher Date | 2013-11-05 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Fault Tolerance Neurons Short Circuits Venting Lithium Dendrites Hazards Safety Electric Batteries Diodes Electrochemical Cells Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
