TY - GEN
T1 - Self-balancing by design in hybrid electrochemical battery packs
AU - Aljunid, Nur Adilah
AU - Denlinger, Michelle A.K.
AU - Fathy, Hosam K.
N1 - Funding Information:
This research was supported by a Penn State University College of Engineering “ENGINE” research grant. The authors gratefully acknowledge this support.
Publisher Copyright:
Copyright © 2018 ASME
PY - 2018
Y1 - 2018
N2 - This paper explores the novel concept that a hybrid battery pack containing both lithium-ion (Li-ion) and vanadium redox flow (VRF) cells can self-balance automatically, by design. The proposed hybrid pack connects the Li-ion and VRF cells in parallel to form “hybrid cells”, then connects these hybrid cells into series strings. The basic idea is to exploit the recirculation and mixing of the VRF electrolytes to establish an internal feedback loop. This feedback loop attenuates state of charge (SOC) imbalances in both the VRF battery and the lithium-ion cells connected to it. This self-balancing occurs automatically, by design. This stands in sharp contrast to today’s battery pack balancing approaches, all of which require either (passive/active) power electronics or an external photovoltaic source to balance battery cell SOCs. The paper demonstrates this self-balancing property using a physics-based simulation of the proposed hybrid pack. To the best of the authors’knowledge, this work represents the first report in the literature of self-balancing “by design” in electrochemical battery packs.
AB - This paper explores the novel concept that a hybrid battery pack containing both lithium-ion (Li-ion) and vanadium redox flow (VRF) cells can self-balance automatically, by design. The proposed hybrid pack connects the Li-ion and VRF cells in parallel to form “hybrid cells”, then connects these hybrid cells into series strings. The basic idea is to exploit the recirculation and mixing of the VRF electrolytes to establish an internal feedback loop. This feedback loop attenuates state of charge (SOC) imbalances in both the VRF battery and the lithium-ion cells connected to it. This self-balancing occurs automatically, by design. This stands in sharp contrast to today’s battery pack balancing approaches, all of which require either (passive/active) power electronics or an external photovoltaic source to balance battery cell SOCs. The paper demonstrates this self-balancing property using a physics-based simulation of the proposed hybrid pack. To the best of the authors’knowledge, this work represents the first report in the literature of self-balancing “by design” in electrochemical battery packs.
UR - http://www.scopus.com/inward/record.url?scp=85057307329&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057307329&partnerID=8YFLogxK
U2 - 10.1115/DSCC2018-9106
DO - 10.1115/DSCC2018-9106
M3 - Conference contribution
AN - SCOPUS:85057307329
T3 - ASME 2018 Dynamic Systems and Control Conference, DSCC 2018
BT - Control and Optimization of Connected and Automated Ground Vehicles; Dynamic Systems and Control Education; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Energy Systems; Estimation and Identification; Intelligent Transportation and Vehicles; Manufacturing; Mechatronics; Modeling and Control of IC Engines and Aftertreatment Systems; Modeling and Control of IC Engines and Powertrain Systems; Modeling and Management of Power Systems
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2018 Dynamic Systems and Control Conference, DSCC 2018
Y2 - 30 September 2018 through 3 October 2018
ER -
