An Improved PSO-Based DC Discharge Heating Strategy for Lithium-Ion Batteries at Low Temperatures

• DOI: 10.20944/preprints202503.1243.v1
• Publication Date: 2025-03-20T01:14:06Z
• Authors: Shaojian Han; Chengwei Li; Jifeng Ding; Xinhua Gao; Xiaojie Li; Zhiwen Zhang

In low-temperature environments, both the electrochemical and thermodynamic performance of lithium-ion batteries are significantly affected, leading to a substantial decline in overall performance. This deterioration is primarily manifested inability battery release its actual capacity effectively, marked reduction charge-discharge efficiency, accelerated degradation, which directly undermines power output capability under conditions. Such degradation severely restricts application scenarios requiring high extended range, such as EVs. paper proposes an intelligent DC discharge heating optimization strategy based on PSO algorithm. The aims simultaneously optimize time minimize loss by employing algorithm dynamically currents varying ambient temperatures. approach achieves simultaneous efficiency loss. proposed effectively overcomes limitation traditional constant-current methods, struggle adjust current intensity real operating By balancing enhances energy utilization. improvements achieved include 48.71 seconds increase rate more than twofold. During 1,000 cycles heating, was reduced 0.10 Ah, extending battery's service life. addresses limitations providing novel solution for efficient environments.