PDF
摘要
为了研究柔性相变材料对电池控温效果的影响,解决传统相变材料硬度大、易脆、安装不便的问题。以石蜡(PA)为相变基体,烯烃嵌段共聚物(OBC)为支撑材料,氮化硼(BN)为添加剂,熔融制备了一种PA-OBC/BN柔性相变材料,以电加热棒模拟电池发热,研究功率、间歇工作、添加剂、材料尺寸对加热棒控温效果的影响。结果表明:使用相变材料控温能够有效地降低电加热棒的表面温度,高加热功率下效果更明显;BN的加入,不仅可以增强控温效果,还可以显著地提高加热棒表面温度的均匀性,在实验范围内,表面最大温度差不超过0.3℃;通过压应力试验发现与以高密度聚乙烯(HDPE)为支撑基的相变材料相比,本柔性材料的硬度更低,韧性更高,延展性更好。上述研究可为柔性相变材料的温控及实际安装应用提供参考。
Abstract
In order to study the influence of flexible phase change material (FPCM) on the temperature control effect of batteries and solve the problems of traditional phase change materials,such as the hardness,brittleness,and inconvenient installation,a flexible phase change material PA-OBC/BN was prepared by melting method using paraffin (PA) as phase change matrix,olefin block copolymer (OBC) as support material,and boron nitride (BN) as additive.An electric heating rod was used to simulate battery heating,and the effects of power,intermittent work,additives,and material size on the temperature control effect of the heating rod were investigated.The results showed that using PCM could effectively reduce the surface temperature of electric heating rod,and the effect was more obvious at high heating power.The addition of BN could not only enhance the temperature control effect,but also significantly improve the surface temperature uniformity of the heating rod.In the experimental range,the maximum surface temperature difference was no more than 0.3℃.The compressive stress test revealed that,compared with the phase change material supported by high density polyethylene (HDPE),the FPCM had lower hardness,higher toughness and better ductility.The above research results could provide reference for the temperature control and practical installation of flexible phase change materials.
关键词
柔性相变材料
/
氮化硼
/
电加热棒
/
控温
/
温度均匀性
Key words
flexible phase change material
/
boron nitride
/
electric heating rod
/
temperature control
/
temperature uniformity
基于柔性相变材料的电加热棒温控实验研究[J].
化工新型材料, 2023, 51(11): 166-170 DOI:10.19817/j.cnki.issn1006-3536.2023.11.028
[1] 黄健.基于光伏微网通信服务的电动汽车充电动态决策模型[D].湘潭:湘潭大学,2015.
[2] 王红君,吴浩,赵辉,等.电动汽车参与电网调峰的模型及调度策略研究[J].电源技术,2015,39(5):992-993,1125.
[3] 谢标.复合相变材料储能及热控的理论和实验研究[D].合肥:中国科学技术大学,2016.
[4] 张焕芝,崔韦唯,夏永鹏,等.复合相变材料的制备及热性能研究进展[J].化工新型材料,2019,47(6):35-38,43.
[5] Ma Y,Luo Y,Xu H,et al.Review on air and water thermal energy storage of buildings with phase change materials[J].Experimental and Computational Multiphase Flow,2021,3:77-99.
[6] Liu Changqing,Chen Cheng,Yu Wei,et al.Thermal properties of a novel form-stable phase change thermal interface materials olefin block copolymer/paraffin filled with Al2O3[J].International Journal of Thermal Sciences,2020,152:106293.
[7] 何玉芳,颜品萍,黄宝铨,等.聚乙二醇/氮化硼复合材料相变导热性能及其结晶行为[J].应用化学,2020,37(6):650-657.
[8] 王海旭.低维氮化硼纳米材料的合成及其复合材料的制备[D].深圳:深圳大学,2020.
[9] Zhang W C,Qiu J Y,Yin X X,et al.A novel heat pipe assisted separation type battery thermal management system based on phase change material[J].Applied Thermal Engineering,2020,165:114571.
[10] 陈志能,丁辉,吴淑英,等.基于复合相变散热的锂离子电池热管理实验研究[J].化工新型材料,2021,49(2):144-148.
[11] 林裕旺,王惜慧,郭剑成,等.基于复合相变材料的电池包热管理研究[J].电源技术,2021,45(7):881-884,940.
[12] 李皖皖.高导热柔性相变材料及其热控特性研究[D].合肥:中国科学技术大学,2017.
[13] 邱勇,周伯昭,何颖波,等.一种新型柔性相变材料薄膜的制备及性能[J].含能材料,2008,16(4):387-390.
[14] 张欢琴.形状记忆聚氨酯弹性体的开发及应用[J].化工新型材料,1997,25(3):32-33.
[15] 王兴天,钟道仙,罗克航.注塑成型技术[M].北京:化学工业出版社,1999.
基金资助
国家自然科学基金(52006202和52206122);河南省科技攻关项目(222102320300和232102321087);郑州轻工业大学博士科研基金项目(0310-13501050023);河南省研究生教育创新培养基地项目(YJS2021JD05)
