Lead-acid batteries for micro- and mild-hybrid applications

Valenciano, J.; Fernandez, Matthew M.; Trinidad, Francisco; Sanz, Laura

doi:10.1016/j.jpowsour.2008.11.089

Cited by 30 publications

(10 citation statements)

References 9 publications

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“…Lead-acid batteries were chosen due to its low cost and wide usage. For example, valve-regulated lead-acid batteries (VRLAs), such as absorbent glass mat (AGM) batteries and gel batteries, are widely used in micro hybrid electric [22][23][24].…”

Section: System Design and Implementationsmentioning

confidence: 99%

A High-Gain Reflex-Based Bidirectional DC Charger with Efficient Energy Recycling for Low-Voltage Battery Charging-Discharging Power Control

Lai

Cheng

et al. 2018

Energies

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This study proposes a high-gain reflex-charging-based bidirectional DC charger (RC-BDC) to enhance the battery charging efficiency of light electric vehicles (LEV) in a DC-microgrid. The proposed charger topology consists of an unregulated level converter (ULC) and a two-phase interleaved buck-boost charge-pump converter (IBCPC), which together provide low ripple and high voltage conversion ratio. As the high-gain RC-BDC charges, the LEV's battery with reflex charging currents, high battery charging efficiency, and prolonged battery life cycles are achieved. This is possible due to the recovering of negative pulse energy of reflex charging currents to reduce charge dissipations within LEV's batteries. Derivations of the operating principles of the high-gain RC-BDC, analyses of its topology, and the closed-loop control designs were presented. Simulations and experiments were implemented with battery voltage of 48 V and DC-bus voltage of 400 V for a 500 W prototype. The results verify the feasibility of the proposed concept and were compared with the typical constant-current/constant-voltage (CC/CV) charger. The comparison shows that the proposed high gain RC-BDC improves battery charging speed and reduces the battery thermal deterioration effect by about 12.7% and 25%, respectively.

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Section: System Design and Implementationsmentioning

confidence: 99%

A High-Gain Reflex-Based Bidirectional DC Charger with Efficient Energy Recycling for Low-Voltage Battery Charging-Discharging Power Control

Lai

Cheng

et al. 2018

Energies

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“…1) Zyklentest mit 17,5 % state of charge (SoC)‐Hub (Ladezustand) nach bei 25 °C (s. Abb. für den Testablauf).…”

Section: Experimenteunclassified

“…3) Zyklentest mit 17,5 % SoC‐Hub nach bei 3 °C mit angepassten Ladespannungen. Dieser Test simuliert den Betrieb in einem typischen Mikrohybrid‐Fahrzeug bei niedrigeren Temperaturen.…”

Section: Experimenteunclassified

Acid‐Filling Level Determinations as Criterion in Checks of Absorbant Glass Mat Lead‐Acid Starter Batteries

Börger

Burow

2018

Chemie Ingenieur Technik

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Acid-Filling Level Determinations as Criterion in Checks of Absorbant Glass Mat Lead-Acid Starter BatteriesThe increased usage of absorbant glass mat (AGM) lead-acid starter batteries requires a broadening of the usual methods for battery analysis. The determination of the acid filling level has developed to a standard technique of quality control for AGM batteries. However, the distribution of acid-filling levels over the battery cells can also be used as a criterion for the evaluation of ageing mechanisms. Acid-filling level of starter batteries that have been aged in the laboratory and on the road were determined and hypotheses to correlate the results with different use cases were shown.

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“…Bei den Tests wurden alle Batterien auf 50 % ihrer Nennkapazität entladen und anschließend mit 17,5 %-Entladetiefe zyklisiert [8]. Die Zyklisierung wurde abgebrochen, wenn U < 10 V (Batterieausfall) oder 1530 Zyklen durchgelaufen waren.…”

Section: Elektrische Batterietestsunclassified

Passive Mixing Elements for Electrolyte Convection in Flooded Lead‐Acid Batteries

Ebner¹,

Wark

Börger³

2011

Chemie Ingenieur Technik

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Blei‐Säure‐Nassbatterien für Mikro‐Hybrid‐Fahrzeuge, die im Start‐Stopp‐Betrieb und damit in einem Teilladezustand betrieben werden, unterliegen einer starken zyklischen Belastung. Daraus resultiert unter anderem eine inhomogene Säuredichteverteilung, die zu frühzeitigem Kapazitätsverlust führt. Zum Ausgleich von Inhomogenitäten innerhalb des Elektrolyten wurden passive Mischelemente eingesetzt. Zur Beurteilung der Wirksamkeit dieser passiven Mischelemente wurden Blei‐Säure‐Nassbatterien im Labor gealtert. Die Ergebnisse zeigen, dass Mischelemente zu einer Homogensierung des Elektrolyten und damit zu einer um den Faktor 6 verlängerten Lebensdauer führen, wobei die Wirkung der Mischelemente umso stärker ist, je höher die Beschleunigungen im Fahrzeug sind, denen die Batterie ausgesetzt ist.

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Lead-acid batteries for micro- and mild-hybrid applications

Cited by 30 publications

References 9 publications

A High-Gain Reflex-Based Bidirectional DC Charger with Efficient Energy Recycling for Low-Voltage Battery Charging-Discharging Power Control

A High-Gain Reflex-Based Bidirectional DC Charger with Efficient Energy Recycling for Low-Voltage Battery Charging-Discharging Power Control

Acid‐Filling Level Determinations as Criterion in Checks of Absorbant Glass Mat Lead‐Acid Starter Batteries

Passive Mixing Elements for Electrolyte Convection in Flooded Lead‐Acid Batteries

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