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Comprehensive Design and Optimization of an Onboard Resonant Self-Heater for EV Battery
IEEE Transactions on Transportation Electrification ( IF 7 ) Pub Date : 2020-01-01 , DOI: 10.1109/tte.2020.3025014 Chong Zhu , Yue Cao , Hua Zhang , Fei Lu , Xi Zhang
IEEE Transactions on Transportation Electrification ( IF 7 ) Pub Date : 2020-01-01 , DOI: 10.1109/tte.2020.3025014 Chong Zhu , Yue Cao , Hua Zhang , Fei Lu , Xi Zhang
1 Abstract—As the primary power sources of electric vehicles (EVs), lithium-ion batteries suffer from substantial capacity and power degradation at cold climates. An onboard battery preheater is essential for EVs to avoid degraded battery performance. This paper proposed a resonant battery self-heater for internally preheating the batteries without external power supplies, thereby providing great flexibility for EVs at different parking areas. To achieve the optimized performance, a detailed analytical model of the self-heater is derived, illustrating the effects of the switching frequency and resonant tank parameters. Considering the size, heating speed, and efficiency, the detailed design methodology of the proposed self-heater is presented by utilizing a nonlinear optimization method, in which the battery impedance variation is included. The downscaled experiments on 18650 cells validate that the optimally designed self-heater can warm up the batteries from -20 °C to 0 °C rapidly with the minimum energy consumption compared to previous heating schemes.
中文翻译:
电动汽车电池车载谐振自加热器的综合设计与优化
1 摘要——作为电动汽车 (EV) 的主要动力来源,锂离子电池在寒冷气候下会遭受大量容量和功率衰减。车载电池预热器对于电动汽车来说是必不可少的,以避免电池性能下降。本文提出了一种谐振电池自加热器,用于在没有外部电源的情况下对电池进行内部预热,从而为不同停车区域的电动汽车提供了极大的灵活性。为了实现优化的性能,推导出了自加热器的详细分析模型,说明了开关频率和谐振槽参数的影响。考虑到尺寸、加热速度和效率,利用非线性优化方法提出了所提出的自加热器的详细设计方法,其中包括电池阻抗变化。
更新日期:2020-01-01
中文翻译:
电动汽车电池车载谐振自加热器的综合设计与优化
1 摘要——作为电动汽车 (EV) 的主要动力来源,锂离子电池在寒冷气候下会遭受大量容量和功率衰减。车载电池预热器对于电动汽车来说是必不可少的,以避免电池性能下降。本文提出了一种谐振电池自加热器,用于在没有外部电源的情况下对电池进行内部预热,从而为不同停车区域的电动汽车提供了极大的灵活性。为了实现优化的性能,推导出了自加热器的详细分析模型,说明了开关频率和谐振槽参数的影响。考虑到尺寸、加热速度和效率,利用非线性优化方法提出了所提出的自加热器的详细设计方法,其中包括电池阻抗变化。