提高电池热管理系统中相变材料的热性能和冷却解决方案:计算分析

Energy Storage Pub Date : 2024-09-02 DOI:10.1002/est2.70036
Gourav Kumar Singh, Jay R. Patel, Manish K. Rathod
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引用次数: 0

摘要

电池,尤其是锂离子电池,对温度变化非常敏感。电池热管理系统(BTMS)在各种电池供电的应用中,尤其是电动汽车(EV)和便携式电子设备中至关重要。本研究采用数值分析方法研究电池组中相变材料 (PCM) 的重要性。电池组由 18 650 个电池单元组成,以 5 × 5 配置排列。通过对比分析,评估了有 PCM 和无 PCM 电池组的热效率。研究探讨了环境条件和充电率对电池组 PCM 选择的影响。此外,还针对基于 PCM 的传统被动式 BTMS,研究了利用 PCM 和水管的混合冷却解决方案。此外,还引入了两种类型的鳍片,即圆形鳍片和螺旋形鳍片,以提高热传导率。当环境温度低于 PCM 的熔化温度时,基于 PCM 的冷却系统最为有效。然而,当环境温度超过 PCM 的熔化温度时,这种冷却系统的冷却效果要优于传统的 PCM 冷却系统。使用无翅片、圆形翅片和螺旋翅片时,最高温度分别为 319、316.9 和 315.3 K。在高环境温度下,螺旋翅片比圆形翅片更有效。总之,带有螺旋鳍片的 PCM 系统在高温环境中表现出了显著的优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancing Thermal Performance and Cooling Solutions of Phase Change Material in Battery Thermal Management System: A Computational Analysis

Batteries, particularly lithium-ion batteries, are sensitive to temperature changes. Battery thermal management systems (BTMS) are essential in various battery-powered applications, especially electric vehicles (EVs) and portable electronic devices. This study examines the importance of phase change material (PCM) in battery packs using numerical analysis. An examination is conducted on a battery pack consisting of 18 650 battery cells arranged in a 5 × 5 configuration. A comparative analysis is performed to evaluate the thermal efficiency of the battery pack with and without PCM. The study examines the influence of ambient conditions and charging rates on the selection of PCM for battery packs. A hybrid cooling solution utilizing PCM and a water tube has also been investigated against conventional passive PCM-based BTMS. Additionally, two types of fins, namely circular and spiral fins, are introduced to improve the heat transfer rate. PCM-based cooling systems are most effective when the ambient temperature is below the melting temperature of the PCM. However, when the ambient temperature exceeds the melting temperature of the PCM, this cooling system outperforms conventional PCM-based cooling. The maximum temperature is found as 319, 316.9, and 315.3 K using without fin, circular fin and spriral fina, respectively. The spiral fins are found more effective than circular fins under high ambient temperature. In conclusion, The PCM-with spiral-fin system demonstrates notable benefits in high-temperature environments.

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