Performance simulation of a heat pipe and refrigerant-based lithium-ion battery thermal management system coupled with electric vehicle air-conditioning
| Autor: | Yunhua Gan, Mengliang Yao, Li Ma, Jialin Liang, Yong Li, Liu Jinlong, Dong Daowei, Luo Qiliang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
business.product_category business.industry 020209 energy Energy Engineering and Power Technology 02 engineering and technology Coefficient of performance Industrial and Manufacturing Engineering Automotive engineering Lithium-ion battery Heat pipe 020401 chemical engineering Air conditioning Heat generation Electric vehicle 0202 electrical engineering electronic engineering information engineering Exergy efficiency Environmental science 0204 chemical engineering business |
| Zdroj: | Applied Thermal Engineering. 191:116878 |
| ISSN: | 1359-4311 |
| DOI: | 10.1016/j.applthermaleng.2021.116878 |
| Popis: | A battery thermal management system (BTMS) is crucial to ensure the safety and efficiency of electric vehicles (EVs). With the increase of battery energy density and the development of fast charging technology, a more compact and controllable BTMS is imperative for EVs to alleviate the thermal issues. In this study, a novel heat pipe and refrigerant-based BTMS coupled with an air-conditioning system is proposed for a battery module. The battery temperature distribution, energy efficiency, and exergy efficiency of the BTMS are numerically investigated under different ambient temperatures and battery heat generation rates. Besides, the effect of different preset temperatures of the battery module on the performance of the BTMS is explored. The results indicate that the maximum temperature of the battery module can be controlled at the preset temperatures (25 °C, 30 °C, and 35 °C), and the temperature difference among battery cells can be well guaranteed within 3 °C. Besides, increasing the preset temperature can improve the energy efficiency and exergy efficiency of the BTMS. When the preset temperature is increased from 25 °C to 30 °C and 35 °C, the average coefficient of performance increased by 16.95% and 38.41%, respectively; and the average exergy efficiency of the BTMS increased by 2.63% and 5.07%, respectively. Further, reducing the superheat at the outlet of the refrigerant pipelines and using a more efficient compressor are recommended to improve the performance of the BTMS. This paper aims to provide insights to the design and optimization of the BTMS in EVs. |
| Databáze: | OpenAIRE |
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