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arXiv 2403.01334eess.SYcs.SY
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实现线性参数变化系统以研究变化流量对锂离子电池热管理系统性能的影响

Implementation of Linear Parameter Varying System to Investigate the Impact of Varying Flow Rate on the Lithium-ion Batteries Thermal Management System Performance

Pedram Rabiee, Mohammad Hassan Saidi

AI总结:

针对锂离子电池热管理中 LTI 模型只能处理恒定冷却液流量的局限,本文构建含三个调度参数的 LPV 降阶模型,在变流量条件下保持接近 CFD 的精度,并获得更平滑的温度分布。

摘要:

电池热管理系统是采用锂离子电池的电动汽车中不可或缺的组成部分。因此,锂离子电池建模、电池产热和热管理是研究人员与汽车制造商关注的重点。为了满足制造商在设计过程中的需求,需要一种比耗时的计算流体动力学模型(CFD)更快的模型。降阶模型(ROM)能够满足这一需求,既可保持 CFD 模型的精度,又能更快地完成编译。文献中已经使用了线性时不变(LTI)降阶模型;然而,由于 LTI 系统存在将冷却流体流量视为恒定值的局限,本研究开发了一种具有三个调度参数的线性参数变化系统。结果表明,在 LTI 系统无法保持精度的工况下,LPV 系统的结果仍能准确拟合 CFD 结果。此外,研究还表明,采用变化的水流量可以获得更平滑的温度分布。

英文摘要:

Battery thermal management system is an indispensable part of the electric vehicles working with Lithium-ion batteries. Accordingly, lithium-ion batteries modeling, battery heat generation, and thermal management are the main focus of researchers and car manufacturers. To fulfill the need of manufacturers in the design process, a faster model than time-consuming Computational Fluid Dynamics models (CFD) is required. Reduced Order Models (ROM) address this requirement to maintain the accuracy of CFD models while could be compiled faster. Linear Time Invariant (LTI) reduced order model has been used in the literature; however, due to the limitation of LTI system, considering the constant flow rate for the cooling fluid, a Linear Parameter Varying system with three scheduling parameters was developed in this study. It is shown that LPV system results could fit accurately to CFD results in conditions that LTI system cannot maintain accuracy. Moreover, it is shown that applying varying water flow rates could result in a smoother temperature profile.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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