Experimental Study on Thermal Management of 5S7P Battery Module with Immersion Cooling Under High Charging/Discharging C-Rates

Batteries, Год журнала: 2025, Номер 11(2), С. 59 - 59

Опубликована: Фев. 3, 2025

In this study, the efficiency of an immersion cooling system for controlling temperature 5S7P battery modules at high charge and discharge C-rates was experimentally evaluated. The study conducted in three main stages including evaluation different coolant oils followed by proposition optimal volume flow rate (VFR) performance under charging/discharging C-rates. first stage, oils, Therminol D-12, Pitherm 150B, BOT 2100, were compared. D-12 achieved superior performance, with highest heat transfer coefficient (HTC) 2171.93 W/m2⋅K ability to maintain maximum (Tmax) difference (∆T) module within safe range. next VFR varied between 0.4 LPM 1.0 selected best oil D-12. 0.8 determined be HTC 2445.73 acceptable pressure drop 12,650 Pa, ensuring a balance energy consumption. Finally, evaluated from 1.5C 3.0C proposed VFR. is effective combination achieve desired extreme C-rate working conditions. maintains Tmax ∆T 38.6 °C 4.3 charging 43.0 5.5 discharging 3.0C.

Язык: Английский

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Thermo-electrochemical performance of lithium-ion cells with immersion cooling under various operating conditions

Journal of Energy Storage, Год журнала: 2025, Номер 111, С. 115400 - 115400

Опубликована: Янв. 22, 2025

Язык: Английский

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Investigation of pool boiling performance on a surface with copper nanowire arrays using molecular dynamics

International Journal of Heat and Fluid Flow, Год журнала: 2025, Номер 114, С. 109818 - 109818

Опубликована: Март 19, 2025

Язык: Английский

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Impact of Thermal and Electrical Dissimilarities on Battery Module Aging

SAE technical papers on CD-ROM/SAE technical paper series, Год журнала: 2025, Номер 1

Опубликована: Апрель 1, 2025

<div class="section abstract"><div class="htmlview paragraph">Battery cell aging and loss of capacity are some the many challenges facing widespread implementation electrification in mobility. One factors contributing to is dissimilarities individual cells connected a module. This paper reports results several experiments using mini-module consisting seven 5 Ah 21700 lithium-ion battery parallel. The cycle comprised constant current-constant voltage charge at 0.7C C-rate, followed by 0.2C current discharge, spanning useful range from minimum maximum according manufacturer. Charge discharge events were separated one-hour rest periods repeated for four weeks. Weekly reference performance tests executed measure static capacity, pulse power capability resistance different states charge. All diagnostics normalized with respect their starting numbers achieve percentage change over time. Both electrical thermal considered initial selection or adjusting boundary conditions, respectively. latter was achieved contrasting air cooling direct liquid immersion which prevented temperature spikes ensured more uniform distribution between cells. For well-clustered cells, use reduced fade noticeably when compared cooling. However, not well clustered, impact overshadowed benefits. Poor clustering resulted lower increase itself reflected as smaller changes fade. highlighted importance during research building packs final application reinforced benefits good management. work did fully explore due moderate C-rates used.</div></div>

Язык: Английский

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Electro-thermal coupling modeling and thermal characterization of sodium-ion batteries

Applied Thermal Engineering, Год журнала: 2025, Номер unknown, С. 126439 - 126439

Опубликована: Апрель 1, 2025

Язык: Английский

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