在冰冷的气候下保持2170离子电池的运行温度,采用预热和泡PCM结构
Omar J Alkhatib1, Ali B M Ali2, Farzona Tursunzoda3
1Architectural Engineering Department, College of Engineering, UAE University, Al Ain, United Arab Emirates.
Scientific reports
|February 24, 2026
概括
本研究介绍了在结条件下为2170个离子电池 (LIB) 组合预热和被动冷却策略. 该系统有效地管理电池温度,确保在极端寒冷的气候下保证热安全和稳定的运行.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 热力工程是热力工程中的一个.
背景情况:
- 离子电池 (LIB) 在低温下面临性能下降和安全风险.
- 有效的热管理对于在寒冷环境中可靠的电池运行至关重要.
- 现有的热管理策略经常在极端的冷启动条件下扎.
研究的目的:
- 为2170 LIBs开发和评估一个联合预热和被动冷却战略.
- 在结条件下保持电池工作温度在最佳范围内 (15-35°C).
- 在极端冷启动场景下评估系统性能,温度低至-40°C.
主要方法:
- 使用有限体积法 (FVM) 进行计算流体动力学 (CFD) 建模.
- 用Al2O3泡和六甲相变材料 (PCM) 模拟热管理结构.
- 系统层面评估预热时间,能源消耗和PCM利用率.
主要成果:
- 预热阶段成功将LIB温度提高到15°C.
- PCM-Al2O3泡矩阵在放电期间有效地保持电池温度低于35°C.
- 证明了稳定的温度均性和有效的潜热吸收.
- 较高的碳度和环境温度会增加电池的平均 (Tavg) 和最大 (Tmax) 温度.
结论:
- 联合策略确保了冷气候LIB应用的热安全性和稳定运行.
- PCM容量足以在低C率 (1-2C) 中保持最佳温度.
- 在较高的C率 (3-4C) 下,随着PCM接近完全化,电池温度会增加,这表明有局限性.
更多相关视频
10:36Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
Published on: November 3, 2023
2.2K
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.5K
相关概念视频
Masonry in Cold and Hot Weather Conditions
357
In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units...
Other key practices include keeping masonry units...
357
Cold Weather Concreting
408
When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
To counteract the negative impacts of cold weather, ensuring...
408
