一个扩展的单粒子模型的离子电池基于简化的固体-液体扩散过程.
Wei He1, Tao Han1, Haiqin Song2,3
1Three Gorges Electric Energy Co., Ltd., Wuhan, Hubei 430000, China.
iScience
|November 19, 2024
概括
一种新的离子电池模型简化了扩散过程,减少了计算负载并增加了速度. 这种简化模型在各种条件下保持高准确度来预测电池性能.
科学领域:
- 电池技术 电池技术
- 电化学工程 电化学工程
- 计算建模 计算建模
背景情况:
- 精确的离子电池建模对于性能优化和开发至关重要.
- 伪二维 (P2D) 模型提供了高保真性,但存在显著的计算复杂性.
- 在不牺牲精度的情况下降低计算需求是电池建模的一个关键挑战.
研究的目的:
- 开发一个扩展的离子电池模型,降低计算复杂度.
- 为了提高电池建模的速度,以实现更快的模拟.
- 在预测电池行为时保持令人满意的准确性.
主要方法:
- 使用三参数方法简化固相扩散过程.
- 应用指数拟合来简化液相扩散过程.
- 利用平均电流流量来简化固体-液体界面的电流交换.
主要成果:
- 与全订单P2D模型相比,建议的扩展模型显著降低了计算复杂性.
- 实验验证证证实了模型的增强速度和令人满意的准确性.
- 简化模型在恒流和动态运行条件下表现良好.
结论:
- 开发的扩展离子电池模型为P2D模型提供了一个计算效率高的替代方案.
- 使用的简化方法有效地平衡了模型的复杂性和预测准确性.
- 该模型适用于需要更快速模拟的应用,同时保持可靠的性能预测.
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