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| 基于生热速率与温度双模型的三元锂离子电池的温度预测 |
| Temperature Prediction of Ternary Lithium‐ion Batteries Based on Dual Models of Heat Generation Rate and Temperature |
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| DOI：10.16018/j.cnki.cn32-1650/n.202403006 |
| 中文关键词: 三元锂离子电池 生热速率与温度双模型 温度预测 |
| 英文关键词: ternary lithium-ion battery heat generation rate model temperature prediction |
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| 中文摘要: |
| 准确预测锂离子电池温度有利于电池安全可靠的热管理。由于锂离子电池表面温升相对于电池内部温升具有一定的滞后性，为准确预测电池温度，提出了基于生热速率和温度双模型的三元锂离子电池温度估计方法。通过实验分析了电池内阻和比热容等，并计算了电池可逆和不可逆产热功率，建立了生热速率与温度双模型，并将不同放电倍率下电池温升实验结果与仿真结果进行对比，结果表明所建立的表面温度预测模型输出结果符合预期。 |
| 英文摘要: |
| Accurate prediction of lithium-ion battery temperature is conducive to the safe and reliable thermal management of batteries. As the surface temperature rise of lithium-ion battery is lagging behind the internal temperature rise, a temperature estimation method of ternary lithium-ion battery based on the dual model of heat generation rate and temperature is proposed to predict the battery temperature. The internal resistance and specific heat capacity of the battery were analyzed by experiments, and the reversible and irreversible heat power of the battery was calculated. The prediction model of heat generation rate and temperature is established. The experimental data of battery temperature rise under different discharge rates are compared with the simulation results. The results show that the output of the surface temperature prediction model is in line with expectation. |
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