A fast-heat battery system using the heat released from detonated supercooled phase change materials

被引：70

作者：

Ling, Ziye ^{[1
,2
,3
]}

Luo, Mingyun ^{[1
,3
]}

Song, Jiaqi ^{[1
,3
]}

Zhang, Wenbo ^{[1
,3
]}

Zhang, Zhengguo ^{[1
,2
,3
]}

Fang, Xiaoming ^{[1
,2
,3
]}

机构：

[1] South China Univ Technol, Sch Chem & Chem Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Wushan Rd 381, Guangzhou 510640, Peoples R China

[2] South China Univ Technol, Zhuhai Inst Modern Ind Innovat, Hengqin 519000, Zhuhai, Peoples R China

[3] South China Univ Technol, Guangdong Engn Technol Res Ctr Efficient Heat Sto, Guangzhou 510640, Peoples R China

来源：

ENERGY | 2021年 / 219卷

基金：

中国国家自然科学基金;

关键词：

Lithium ion battery; Low temperature; Thermal management; Phase change materials; Subcooling; Rapid heating; LITHIUM-ION BATTERIES; THERMAL MANAGEMENT; ELECTRIC VEHICLE; PERFORMANCE; PCM; NUCLEATION;

D O I：

10.1016/j.energy.2020.119496

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A heating strategy has been developed for the battery operated at low temperature, which can intelligently control the thermal storage and release of an inorganic phase change material (PCM): CaCl2$6H(2)O - carboxymethyl cellulose (CMC). With the 0.5 wt % CMC content, this PCM (melts at 25-30 degrees C) becomes stable in the subcooled state, making it possible to be used as the subcooled liquid at 5 degrees C to store the heat generated by the battery. The thermal energy stored in the subcooled PCM can be detonated to release by triggering the PCM to crystalize with a special device. The instant crystallization of this subcooled PCM heats the battery rapidly-which is at a rate up to 7.5 degrees C/min, higher than the battery without PCM (0.8 degrees C/min) or the battery with the no subcooled PCM(0.4 degrees C/min). The discharge capacity and power can be improved by 9.87% and 7.56%. This work presents a new method of heating by switching the subcooling of PCM on/off, which extends the application of PCMs to battery heating under low temperatures. This energy-free but efficient method could provide a better alternative to most active heating systems. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：9

共 46 条

[1] A novel thermal management for electric and hybrid vehicles [J].