Best practices to reduce hazards – pv magazine International

By ESS news

Leeward Renewable Energy, a Dallas-based owner of U.S. solar, wind and battery storage projects, released a report on BESS hazards to highlight and put into context the causes of thermal runaway and fires in lithium-ion batteries. The study, by Thomas Ebel, senior manager of BESS engineering at Leeward, examined possible causes of BESS hazards, the effects of different battery chemistries and lessons learned from past incidents.

The report did not take into account mechanical damage from accidents or natural events such as earthquakes and tornadoes.

BESS hazards were taken into account in several scenarios, including spikes or short circuits running through the electrodes due to mechanical and/or electrochemical stress in battery cells. The report shows that such voltages are often the result of electrolyte degradation or improper voltage forced into a battery system. Such events result in excessive heat that can cause a thermal runaway.

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