多阶段恒dQ/dU的锂离子电池充电策略OA
Multi-stage constant dQ/dU charging strategy for Li-ion battery
针对锂离子电池恒流恒压(CC-CV)充电存在的热累积效应和不可逆容量衰减等问题,提出一种电流自适应充电法.通过设置恒定的dQ/dU和初始充电电流I0,动态调整充电电流,以缓解容量衰减问题,提升能量效率.设计循环老化的正交实验(600 次循环,25℃),分析dQ/dU和I0 对能量效率、容量衰减率及容量增量曲线的影响.当选取dQ/dU=26 Ah/V、I0 为 1.00 C时,循环 600 次后,该方法相较于CC-CV方法容量衰减率降低 2.23 个百分点,能量效率提升 1.66 个百分点.
Aiming at addressing the thermal accumulation effect and irreversible capacity degradation issues inherent in traditional constant current-constant voltage(CC-CV)charging for Li-ion batteries,a current-adaptive charging method is proposed.This approach dynamically adjusts charging current to simultaneously enhance energy efficiency and mitigate capacity decay rate.Orthogonal experiments for cycle aging(600 cycles at 25℃)are designed to analyze the effects of dQ/dU and initial charging current(I0)on energy efficiency,capacity degradation rate and incremental capacity curves.When selecting dQ/dU=26 Ah/V and I0=1.00 C,this method demonstrates a reduction by 2.23 percentage points in capacity decay rate and a 1.66 percentage points improvement in energy efficiency compared to the CC-CV method over 600 cycles.
康健强;原博文;周晨旭;程鹏
武汉理工大学汽车工程学院,湖北 武汉 430070武汉理工大学汽车工程学院,湖北 武汉 430070武汉理工大学汽车工程学院,湖北 武汉 430070武汉理工大学汽车工程学院,湖北 武汉 430070||荆楚理工学院新能源学院,湖北 荆门 448000
信息技术与安全科学
锂离子电池充电策略自适应能量效率容量衰减
Li-ion batterycharging strategyadaptiveenergy efficiencycapacity degradation
《电池》 2026 (2)
352-360,9
国家自然科学基金项目(52277224)
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