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Overcurrent Abuse of Primary Prismatic Zinc–Air Battery Cells Studying Air Supply Effects on Performance and Safety Shut-Down

Fredrik Larsson (Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers)) ; Antti Rytinki (Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers)) ; Istaq Ahmed (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; Ingvar Albinsson ; Bengt-Erik Mellander (Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers))
Batteries Vol. 3 (2017), 1,
[Artikel, refereegranskad vetenskaplig]

Overcurrent abuse has been performed on commercial 48 Ah primary prismatic zinc (Zn)–Air battery cells with full air supply as well as with shut-off air supply. Compared to other battery technologies, e.g., lithium-ion batteries, metal–air batteries offer the possibility to physically stop the battery operation by stopping its air supply, thus offering an additional protection against severe battery damage in the case of, e.g., an accidental short circuit. This method may also reduce the electrical hazard in a larger battery system since, by stopping the air supply, the voltage can be brought to zero while maintaining the energy capacity of the battery. Measurements of overdischarge currents and current cut-off by suffocation have been performed to assess the safety of this type of Zn–air battery. The time to get to zero battery voltage is shown to mainly be determined by the volume of air trapped in the cell.

Nyckelord: abuse, air supply, metal–air, overcurrent, overdischarge, primary battery, safety, suffocation, zinc (Zn)–air

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Denna post skapades 2017-01-03. Senast ändrad 2017-11-08.
CPL Pubid: 246602


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