摘要：SummaryWith the aggravation of environmental pollution and energy crisis, lithium-ion batteries are widely regarded as promising. However, the current distribution in the parallel battery pack branches is highly heterogeneous. Charging strategies based on the models can be adopted to prevent side reactions that may lead to severe degradation or even thermal runaway under various ambient temperatures. In this study, a battery model for a single cell is established by coupling a single particle model with electrolyte, degradation model, and thermal model. Besides, considering the contact resistance and wire resistance, the circuit model of a battery pack is established. A charging strategy based on minimum Li plating overpotential control is then adopted, and the effectiveness under high C-rate and low temperature to reduce capacity loss is verified by simulation. This study provides a low-loss charging strategy that can reduce the safety risk of battery packs with better performance under various ambient temperatures.Graphical abstractDisplay OmittedHighlights•A cell model is established accurately under various C-rates and temperatures•The contact and wire resistances are considered into the battery pack circuit model•Side reactions like Li plating are accurately described in the model during cycling•Charging strategy for parallel battery pack is adopted to prevent side reactionsElectrochemical energy storage; Mechanical engineering; Energy Systems; Energy materials
