Examination of VRLA cells sampled from a battery energy storage system (BESS) after 30-months of operation

Szymborski, J.; Hunt, G.; Tsagalis, A.; Jungst, Rudolph G.

doi:10.1109/intlec.2000.884293

Cited by 3 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lead-acid batteries can be used in various battery energy storage system (BESS) scenarios, for example, the more traditional and well-established uninterruptible power supply (UPS) use case or standby emergency reserve, where the battery is kept at 100% SOC and maintained by float voltage [1][2][3][4][5]. In this case, the battery may be infrequently discharged and slowly recharged to full over the course of days or weeks.…”

Section: Introductionmentioning

confidence: 99%

“…However, emerging use cases for batteries include those of home energy storage, off-grid use, load levelling, and micro-grids [6][7][8][9]. In these scenarios, the battery is cycled far more frequently and is generally operated at intermediate states of charge in a partial-state-of-charge (PSOC) regime [5,[10][11][12]. Whether the battery fully charges can be dependent on weather, energy prices, and household loads [13], as such, the full charges are irregular.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigations into the Charge Times of Lead–Acid Cells under Different Partial-State-of-Charge Regimes

Parker,

McMahon

2024

Batteries

View full text Add to dashboard Cite

Partial state of charge (PSOC) is an important use case for lead–acid batteries. Charging times in lead–acid cells and batteries can be variable, and when used in PSOC operation, the manufacturer’s recommended charge times for single-cycle use are not necessarily applicable. Knowing how long charging will take and what the variability in time required is allows for better planning of operations and algorithm creation for battery energy storage system (BESS) manufacturers. This paper details and demonstrates a procedure for identifying the charging time of cells when different charge throughputs occur prior to reaching full charge. The results showed that the charging time in PSOC operations was highly variable when a charge-factor-controlled full-charge procedure was used. Also noted were that higher voltages for the same state of charge were reached as the number of cycles following reaching full charge increased. None of the regimes tested in this paper caused any significant capacity degradation, which demonstrates that PSOC operations can be performed even on cells not specifically designed for them, provided the correct regime is chosen.

show abstract