On Optimal Cell Monitoring in a Sensor Minimal Battery Management System with Integrated Direct Active Balancing

Widera, B.; Dost, Philip; Kipke, Vile

doi:10.1109/ias.2019.8911910

Cited by 2 publications

(2 citation statements)

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“…Fig. 1) [18,20]. Due to the non-linear voltage-over-SOC curve, the voltage differences do not decrease according to the e-function as probably expected.…”

Section: Long-term Measurementmentioning

confidence: 72%

“…In case of larger voltage differences, the time for the balancing and measuring processes can either be modified to adapt the value of capacitors with >99% accuracy, or a capacitor model can be implemented to achieve the desired accuracy [20]. In consequence, charge or discharge limits can be satisfied in any constellation of the stack's cell voltages.…”

Section: Measurement Processmentioning

confidence: 99%

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Direct active cell balancing with integrated cell monitoring

Dost

Kipke

2019

IET Electrical Systems in Transportation

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In this study, an active battery balancing system is proposed, which allows direct energy transfer between arbitrary cells within a cell stack with simultaneous cell monitoring. The energy transfer utilises only one energy storage for the balancing process of the whole stack. Furthermore, the design enables the reduction of required sensors to only one voltage and one current sensor for full individual cell monitoring. The proposed system can be implemented in any battery application where cell balancing is mandatory, e.g. in lithium-based battery systems due to their strict operation limits. The proposed balancing system is validated through simulation and experimental measurements. The results confirm the proposed concept design.

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“…Fig. 1) [18,20]. Due to the non-linear voltage-over-SOC curve, the voltage differences do not decrease according to the e-function as probably expected.…”

Section: Long-term Measurementmentioning

confidence: 72%

Section: Measurement Processmentioning

confidence: 99%