Leaf and hexagonal grid designs for lead-acid battery. An EIS analysis

Calboréan, Adrian; Bruj, Olivia; Morari, Cristian

doi:10.1016/j.est.2022.105933

Cited by 5 publications

(2 citation statements)

References 41 publications

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“…The first three types of lead-acid batteries (L2 FLO 52 Ah) were formed in a traditional flooded technological approach, in which the electrodes/plates were immersed in an electrolyte. The most familiar example of a flooded lead-acid cell is a 12 V automobile battery, but this has the disadvantage of some maintenance during its lifetime, meaning that additional distilled water must be added from time to time in order to bring the electrolyte up to the optimal level [44].…”

Section: Lead-acid Battery Types/technologiesmentioning

confidence: 99%

“…In the PEIS procedure, the voltage amplitude of the sinusoidal signal was set to 3 mV in the frequency range of 0.2-200 Hz. Perturbation signals below 10 mV should be used in order to maintain the linear conditions [34,44]. The frequency scan used Nd = 20 points per decade in logarithmic spacing and Na = 10 measures per frequency, as we aimed for a high accuracy of the frequency measurements.…”

Section: Battery Characterization Proceduresmentioning

confidence: 99%

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Qualitative Characterization of Lead–Acid Batteries Fabricated Using Different Technological Procedures: An EIS Approach

Bruj,

Calborean

2023

Batteries

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Electrochemical impedance spectroscopy techniques were applied in this work to nine industrially fabricated lead–acid battery prototypes, which were divided into three type/technology packages. Frequency-dependent impedance changes were interpreted during successive charge/discharge cycles in two distinct stages: (1) immediately after fabrication and (2) after a controlled aging procedure to 50% depth of discharge following industrial standards. To investigate their state of health behavior vs. electrical response, three methods were employed, namely, the Q-Q0 total charge analysis, the decay values of the constant-phase element in the equivalent Randles circuits, and the resonance frequency of the circuit. A direct correlation was found for the prediction of the best-performing batteries in each package, thus allowing for a qualitative analysis that was capable of providing the decay of the batteries’ states of health. We found which parameters were directly connected with their lifetime performance in both stages and, as a consequence, which type/technology battery prototype displayed the best performance. Based on this methodology, industrial producers can further establish the quality of novel batteries in terms of performance vs. lifespan, allowing them to validate the novel technological innovations implemented in the current prototypes.

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Section: Lead-acid Battery Types/technologiesmentioning

confidence: 99%

Section: Battery Characterization Proceduresmentioning

confidence: 99%