Johannes Diers

Impact of Aging on Constant-Temperature Control Strategies for Lithium-Ion Batteries

Galo D. Astudillo, Federico Cecati, Hamzeh Beiranvand, Florian Dörfler et autres

Brillouin Optical Time Domain Reflectometry for Distributed Temperature Monitoring of Battery Energy Storage Systems

Tjorven Hilbert, Florian Azendorf, Hamzeh Beiranvand, Johannes Diers et autres

The concept of Brillouin optical time domain reflectometry as a means of distributed temperature monitoring for battery systems is investigated and deemed feasible. The concept has been investigated regarding measurement speed, temperature accuracy, measurement range, and responsivity of the fiber material. The …

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Talkative battery: super-safe batteries with power-modulation based internal and external sensor data collection

Johannes Diers, Hamzeh Beiranvand

Individual cell surveillance in lithium-ion battery systems has not yet been widely adopted in the industry due to the increased cost of the final product. Thereby, the limited number of temperature sensors in a battery pack endangers system safety. This paper proposes …

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Second-life potential of end-of-life E-ferry cells for stationary BESS

Kun Qian, Johannes Diers, Hamzeh Beiranvand, Henrik Hagbarth Mikkelsen et autres

Introduction: This paper assesses the second-life potential of end-of-life (EoL) E-ferry cells for stationary battery energy storage systems (BESSs). Given the challenges associated with repurposing electric vehicle batteries, including heterogeneous aging profiles and complex cell balancing, this study explores an alternative pathway …

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Brillouin Optical Time Domain Reflectometry for Distributed Temperature Monitoring of Battery Energy Storage Systems

Tjorven Hilbert, Florian Azendorf, Hamzeh Beiranvand, Johannes Diers et autres

The concept of Brillouin optical time domain reflectometry as a means of distributed temperature monitoring for battery systems is investigated and deemed feasible. The concept has been investigated regarding measurement speed, temperature accuracy, measurement range, and responsivity of the fiber material. The …

Overview of Temperature Sensor Technologies for Safe Lithium-Ion Batteries

Hamzeh Beiranvand, Annika Dochhan, Johannes Diers, Luigi Mattia et autres

The greatest challenge of the high-energy density lithium-ion (Li-ion) batteries is the safety issues related to elevated temperature that leads to fire and explosion. Beside the development of safe chemistries for Li-ion batteries, prognosis and diagnosis of thermal safety risk (TSR) properly …

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Cell Temperature Limiting Fast Charging Method for Lithium-Ion Batteries

Johannes Diers, Riccardo Sancio, Hamzeh Beiranvand, Hendrik Vegelahn et autres

Fast charging of high-energy-density lithium-ion batteries is associated with high power losses and results in higher battery temperatures. Heat is the main factor that accelerates degradation mechanisms and can cause thermal runaway. Modified charging strategies, such as the Constant Temperature - Constant …

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Mechanistic Multi-Stage Constant Current and Constant Stress Charging Strategies for Silicon Electrodes in Lithium-Ion Batteries

Hamzeh Beiranvand, Sahil Shingote, Ashwin Shejwalkar, Johannes Diers et autres

Silicon (Si) electrodes with different geometries are considered as one of the main lithium-ion (Li-ion) battery material candidates to achieve high gravimetric energy density. However, the widespread use of Si is hindered by high mechanical instability due to large volume expansion caused …

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Reinforcement Learning for Simultaneous SOC and Temperature Balancing of Li-Ion Battery Cells in Battery Management Systems

Johannes Diers, Tokessa Hamann, Hamzeh Beiranvand, Marco Liserre et autres

The increasing adoption of electric vehicles (EVs) and battery energy storage systems (BESS) makes battery management systems (BMS) crucial for effectively managing battery cells, such as state of charge (SOC) and cell temperature. Significant imbalances in these parameters can degrade battery performance …

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EMI-Compatible Talkative Power Conversion

Andrea Celentano, Hamzeh Beiranvand, Rui Li, Julius Maximilian Placzek et autres

Talkative Power Conversion (TPC) unifies power with integrated data modulation in power electronic converters. However, it requires by design that higher harmonic contents are allowed to propagate in a system of converters, which might lead to Electromagnetic Interference (EMI). Therefore, this paper …

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