More and more researchers are exploring fast charging strategies for LIBs to reduce charging time, increase battery longevity, and improve overall performance, driven by the growing popularity of EVs. Nevertheless, fast charging poses challenges such as energy wastage, temperature rise, and reduced battery lifespan.
High charging rates can generate significant heat, potentially causing the battery temperature to rise rapidly, which in turn may affect its performance and lifespan . Batteries have higher charging efficiency at appropriate temperatures, while their charging efficiency decreases at temperatures that are too high or too low.
Therefore, to improve charging efficiency and user experience, ensure charging safety and battery lifespan, establishing and selecting scientific charging strategies for safe, efficient, and stable charging is crucial in accident prevention. Traditional fast charging methods usually entail charging the battery with high currents.
An elevated charging temperature provokes the exfoliation of the graphite sheets which hastens permanent capacity loss in the battery. This phenomenon can be aggravated when associated to a high charging rate: the charging current increases the temperature and causes an acceleration of the exfoliation phenomenon.
Researchers [38, 69, 70] have suggested using pulse current charging techniques to improve charging speed and prolong battery durability. Pulse charging strategy is primarily appropriate for batteries that exhibit sensitivity to polarization phenomena during the charging process and require optimization of charging efficiency and battery longevity.
Specifically, by integrating advanced algorithms such as adaptive control and predictive control, it is possible to accurately adjust the current changes during the charging process, ensuring that the current distribution and duration of each stage reach an optimized state, thereby improving charging efficiency and battery life.
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To evaluate the proposed charging strategies, a fast charging technique is designed. The results show that the charging technique, when applied to the selected high power lithium iron...
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The design of fast charging strategy for lithium-ion batteries and ...
It is essential to charge the battery, but the improper charging strategies may result in the charging currents and voltages surpassing the battery''s tolerance limits. This can lead to …