Numerical Simulation of Immersed Liquid Cooling System for Lithium-Ion Battery Thermal Management System of New Energy Vehicles

Ping Fu (), Liwei Fang, Shouyi Jiao, Jian Sun () and Zhicheng Xin
Additional contact information
Ping Fu: School of Civil and Architectural Engineering, Nanjing Tech University Pujiang Institute, Nanjing 211200, China
Liwei Fang: Shandong Lurun Heat Energy Science & Technology Co., Ltd., Jinan 250305, China
Shouyi Jiao: Shandong Lurun Heat Energy Science & Technology Co., Ltd., Jinan 250305, China
Jian Sun: School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210042, China
Zhicheng Xin: College of Energy Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2023, vol. 16, issue 22, 1-13

Abstract: Power batteries generate a large amount of heat during the charging and discharging processes, which seriously affects the operation safety and service life. An efficient cooling system is crucial for the batteries. This paper numerically simulated a power battery pack composed of 8 lithium-ion cells immersed in the coolant AmpCool AC-110 to study the effects of different coolants, different discharge rates, different coolant mass flow rates, different inlet temperatures and different inlet and outlet settings on the maximum temperature, the maximum temperature difference, the pressure drop, and the required pump power in the battery pack. Among the five coolants studied, W-E in water-based fluids has the best cooling effect, but because of high electric conductivity, it requires special considerations to avoid electric leakage. Increasing the mass flow rate of the coolant can significantly decrease T max and Δ T max , but when the mass flow rate is already high, the decrease is limited and not obvious. Both Δ p and the required pump power increase as the mass flow rate increases, and the required pump power increases faster. The inlet temperature will affect the physical properties of the coolant, and choosing the appropriate inlet temperature can not only decrease Δ T max , but also decrease Δ p and the required pump power in the battery pack. The range of 25~27 °C of the coolant AC-110 inlet temperature is recommended. For different inlet and outlet settings, the two-inlet two-outlet setting used in Case 7 has the best cooling effect, and the results indicate uniform distribution is very important to decrease temperature.

Keywords: immersed liquid cooling; numerical simulation; the maximum temperature; pressure drop (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/22/7673/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/22/7673/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:22:p:7673-:d:1283970

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().