TY - GEN
T1 - Capacity recovery of a sulfated lead-acid battery using pressure feedback charging control
AU - Shi, Ying
AU - Ferone, Christopher A.
AU - Rahn, Christopher D.
PY - 2012
Y1 - 2012
N2 - Valve Regulated Lead-Acid (VRLA) batteries can degrade due to a variety of mechanisms, including corrosion, hard sulfation, water loss, shedding, and active mass degradation. Hard sulfation can be the dominant aging mechanism for many cells. In this paper, pressure feedback is used to minimize water loss during low current charging designed to break up hard sulfate and recover capacity. A VRLA battery that was cycle tested to failure is used to test the desulfation charging control scheme. One cell of this battery that was diagnosed with sulfation degradation was desulfated for 313 hrs at an average current of 0.2 A. The capacity of the cell was recovered by 41% with minimal water loss, demonstrating the effectiveness of the desulfation charge controller.
AB - Valve Regulated Lead-Acid (VRLA) batteries can degrade due to a variety of mechanisms, including corrosion, hard sulfation, water loss, shedding, and active mass degradation. Hard sulfation can be the dominant aging mechanism for many cells. In this paper, pressure feedback is used to minimize water loss during low current charging designed to break up hard sulfate and recover capacity. A VRLA battery that was cycle tested to failure is used to test the desulfation charging control scheme. One cell of this battery that was diagnosed with sulfation degradation was desulfated for 313 hrs at an average current of 0.2 A. The capacity of the cell was recovered by 41% with minimal water loss, demonstrating the effectiveness of the desulfation charge controller.
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U2 - 10.1115/DSCC2012-MOVIC2012-8584
DO - 10.1115/DSCC2012-MOVIC2012-8584
M3 - Conference contribution
AN - SCOPUS:84885945328
SN - 9780791845295
T3 - ASME 2012 5th Annual Dynamic Systems and Control Conference Joint with the JSME 2012 11th Motion and Vibration Conference, DSCC 2012-MOVIC 2012
SP - 287
EP - 291
BT - ASME 2012 5th Annual Dynamic Systems and Control Conference Joint with the JSME 2012 11th Motion and Vibration Conference, DSCC 2012-MOVIC 2012
T2 - ASME 2012 5th Annual Dynamic Systems and Control Conference Joint with the JSME 2012 11th Motion and Vibration Conference, DSCC 2012-MOVIC 2012
Y2 - 17 October 2012 through 19 October 2012
ER -