Novel experimental approach for the characterisation of Lithium-Ion cells performance in isothermal conditions

Experimental investigation of lithium-ion cells ageing under isothermal conditions for optimal lifetime performance

“…isothermal boundary condition). These two temperatures noticeably differ as discussed in Landini et al [24], especially at high charge and discharge rates, a phenomenon called selfheating. As it is, the Li-Ion cell surface temperature was not controlled, and the effect of the rate of charge and discharge was never truly separated from the effect of the cell operating temperature both on average and as it varied over the cycle.…”

“…The test rig components, configuration, and cells' cycling methodology used in this study are extensively reported in Landini et al [24]. The properties of the Li-Ion pouch cells and the overall test rig uncertainty for each quantity of interest are reported in Each cell has been cycled continuously at a set controlled isothermal condition (i.e.…”

“…stable average surface cell temperature). This boundary condition has been imposed by using the novel test rig and methodology described in a previous study by Landini and O'Donovan [24]. The novel test rig emulates an active Li-Ion cell thermal management and it is composed of a thermal chamber, a micro wind tunnel, and a control system.…”

“…Crucially, this is different from a standard uniform environmental condition (defined as isoperibolic) where the cell surface temperature and critically the rate of heat transfer from the cell would be different from an active TMS. For more details, the reader is referred to Landini and O'Donovan [24].…”

“…Therefore, the aim of this study is to apply the novel experimental approach proposed in Landini et al [24]and evaluate the effect of different isothermal conditions (i.e. imposing a constant and uniform Li-Ion cell surface temperature) on the ageing effect of a Li-Ion pouch cell.…”