Lithium-Ion Small Cell Battery Shorting Study

Pearson, Chris; Curzon, David; Blackmore, Paul; Rao, Gopalakrishna

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NASA NTRS · 20080015786

Lithium-Ion Small Cell Battery Shorting Study

Pearson, Chris·Curzon, David·Blackmore, Paul·Rao, Gopalakrishna

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Abstract

Positive Temperature Coefficient (PTC) provides adequate sustained hard short protection for AEA batteries with up to 8 cells in series. PTC cannot protect against sustained hard short in AEA batteries with 10 cells or more in series. Protective fused connector is a proven way to protect larger batteries from hard short damage: a) Hard short not credible in unmanned missions; b) However, recommended during ground handling; c) Inexpensive item. Preliminary diode protection scheme has passed manned space safety requirements for high voltage batteries. SCM confirmed fused connector did not affect battery health, however, this affect of hard short on the its long calendar and cycle life performance needs to be verified.

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Pearson, Chris, Curzon, David, Blackmore, Paul, Rao, Gopalakrishna. 2006-08-01. Lithium-Ion Small Cell Battery Shorting Study. https://ntrs.nasa.gov/citations/20080015786

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