基于相变材料的电动汽车混合动力电池热管理系统计算研究

Q3 Engineering

International Journal of Vehicle Structures and Systems Pub Date : 2022-12-25 DOI:10.4273/ijvss.14.7.06

S. Mohankumar, S. Harishbalaj, S. Satish, V.G. Kishore, K. Karthikeyan, C. Naveenkumar

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引用次数: 1

摘要

由于污染的增加和全球变暖，汽车工业的未来正朝着汽车电气化的方向发展。电池的热管理是提高电池模块在极端工作条件下的性能所必需的。采用相变材料的电池热管理系统可以控制电池模块内部温度的极值，实现电池内部温度的均匀性。在这项工作中，改进了传统的电池布局系统，利用PCM(石蜡)诱导被动冷却，PCM(石蜡)被放置在电池组中每个电池的周围。分别取了厚度为2mm、3mm和4mm的PCM层。与现有的基于PCM的BTMS相比，这降低了重量和成本。这也保证了电池效率的即兴发挥。采用ANSYS软件，在空气流量为4m/s的空气辅助冷却系统下，研究了电池在不同放电速率条件下(4C、3C、2C和1C)的热性能。从分析中可以发现，在没有任何BTMS的情况下，在4C放电率下，电池组的最高温度约为60℃。用PCM覆盖的电池组的温度升高，对于相同的放电率和相同的空气流速，2mm为33.5厘C, 3mm为34.4厘C, 4mm为34.07厘C，低于最佳温度。当在PCM中加入膨胀石墨时，发现对于2mm厚度的PCM，温度降低到30℃。

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Computational Investigation on Phase Change Material based Hybrid Battery Thermal Management System for Electric Vehicle

The future of the automobile industry is moving towards the electrification of vehicles due to the increase in pollution and global warming. The thermal management of the battery is necessary to enhance the performance of the battery module at extreme operating conditions. Battery thermal management systems using phase change material can be used to control the temperature extremity and to achieve uniformity in temperature inside battery module. In this work, the conventional battery layout system is modified to induce the passive cooling with the use of PCM (paraffin wax) which has been placed around the periphery of each cell in the battery pack. Different thickness of PCM layer 2mm, 3mm and 4mm have been taken. This reduces the weight and cost compared to the existing PCM based BTMS. This also ensures improvise in the efficiency of the battery. The battery thermal behaviour is studied using ANSYS for various discharge rate condition (4C, 3C, 2C and 1C) with air assisted cooling system having an air flow rate of 4m/s. From the analysis, it is found that maximum temperature of a battery pack at 4C discharge rate without any BTMS is, about 60C. Elevated temperature of the battery pack covered with a PCM, for same discharge rate with same air flow rate for 2mm is 33.5C and for 3mm it is 34.4C and for 4mm it is 34.07C which falls under the optimal temperature. While adding expanded graphite to the PCM it is found that the temperature reduces to 30C for 2mm thickness PCM.

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来源期刊

International Journal of Vehicle Structures and Systems Engineering-Mechanical Engineering

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The International Journal of Vehicle Structures and Systems (IJVSS) is a quarterly journal and is published by MechAero Foundation for Technical Research and Education Excellence (MAFTREE), based in Chennai, India. MAFTREE is engaged in promoting the advancement of technical research and education in the field of mechanical, aerospace, automotive and its related branches of engineering, science, and technology. IJVSS disseminates high quality original research and review papers, case studies, technical notes and book reviews. All published papers in this journal will have undergone rigorous peer review. IJVSS was founded in 2009. IJVSS is available in Print (ISSN 0975-3060) and Online (ISSN 0975-3540) versions. The prime focus of the IJVSS is given to the subjects of modelling, analysis, design, simulation, optimization and testing of structures and systems of the following: 1. Automotive vehicle including scooter, auto, car, motor sport and racing vehicles, 2. Truck, trailer and heavy vehicles for road transport, 3. Rail, bus, tram, emerging transit and hybrid vehicle, 4. Terrain vehicle, armoured vehicle, construction vehicle and Unmanned Ground Vehicle, 5. Aircraft, launch vehicle, missile, airship, spacecraft, space exploration vehicle, 6. Unmanned Aerial Vehicle, Micro Aerial Vehicle, 7. Marine vehicle, ship and yachts and under water vehicles.