The influence of mass transport processes on the performance of the lead-acid cell on pulsed discharge

✍ Scribed by A.D. Turner; P.T. Moseley

• Book ID: 103897898
• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 445 KB
• Volume: 10
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(83)80006-8

✦ Synopsis

The effect of pulsed current discharge on lead-acid cell capacity has been examined in the light of the diffusive mass transport limitation of electrolyte to the reaction interface. It is shown that the capacity of a cell on pulsed discharge is expected to be identical with the capacity of the same cell subjected to constant current discharge. This prediction, which arises because the time scale of controller pulses is much shorter than that of diffusion relaxation, is largely supported by data reported in the literature.

It has also been shown that cells subjected to pulsed discharge (pulse width 6, repetition time 7') will experience heating effects which are increased by a factor of T/6 over cells discharged at the same mean constant current. In order to preserve cycle life it is recommended that cell cooling be optimized and some capacity be sacrificed to ensure that the cell is not overdischarged.