Experiments on thermal run-a-way and its management for electrolyte immobilized lead-acid batteries

Vaccaro, F.J.; Landwehrle, R.E.

doi:10.1109/intlec.1991.172367

Cited by 7 publications

(2 citation statements)

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“…The layers repeat periodically, allowing the whole pile to be modelled via analysis of one electrode pair. Some thermal effects have been documented experimentally [5,6] and considered theoretically [7,8]; we assume an isothermal system for simplicity. The electrodes are porous, permeated by an aqueous sulfuric acid (H 2 SO 4 ) electrolyte that also permeates the separator.…”

Section: Modelmentioning

confidence: 99%

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Faster Lead-Acid Battery Simulations from Porous-Electrode Theory: Part I. Physical Model

Sulzer

Chapman

Please

et al. 2019

J. Electrochem. Soc.

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An isothermal porous-electrode model of a discharging lead-acid battery is presented, which includes an extension of concentrated-solution theory that accounts for excluded-volume effects, local pressure variation, and a detailed microscopic water balance. The approach accounts for three typically neglected physical phenomena: convection, pressure diffusion, and variation of liquid volume with state of charge. Rescaling of the governing equations uncovers a set of fundamental dimensionless parameters that control the battery's response. Total volume change during discharge and nonuniform pressure prove to be higher-order effects in cells where variations occur in just one spatial dimension. A numerical solution is developed and exploited to predict transient cell voltages and internal concentration profiles in response to a range of C-rates. The dependence of discharge capacity on C-rate deviates substantially from Peukert's simple power law: charge capacity is concentration-limited at low C-rates, and voltage-limited at high C-rates. The model is fit to experimental data, showing good agreement.

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Section: Modelmentioning

confidence: 99%

“…The layers repeat periodically, allowing the whole pile to be modeled via analysis of one electrode pair. Some thermal effects have been documented experimentally 6,7 and considered theoretically; 8,9 we assume an isothermal system for simplicity.…”

mentioning

confidence: 99%