Thermal performance improvement of a radial pulsating heat pipe with diverging channels by adopting Tesla valves at various heat fluxes

Jang, Dong Soo; Ham, Se Hyeon; Shin, Hyun Ho; Kim, Yongchan

doi:10.1016/j.applthermaleng.2023.121799

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…As also suggested by their results, forced air cooling may be feasible for battery units but could not meet the cooling requirements of battery packs with high discharge rates. In the study of Zhang and Wei as well as Jang et al, the superiority of BTMS based on a flat single-channel heat pipe with respect to the control of temperature rise and temperature uniformity was further confirmed; the authors pointed out that the temperature increase of the batteries is lower than 15 °C at discharge rates in the range of 1C to 6C (C-rate is the measurement of the charge and discharge current with respect to its nominal capacity) and the temperature difference within the battery pack is below 5 °C at discharge rates of 2C and 4C or during cyclic operation when flat single-channel heat pipes combined with natural air convection or water cooling are adopted. These, however, could not be realized by aluminum plate cooling combined with natural air convection.…”

Section: Btmss Based On Flat Single-channel Heat Pipesmentioning

confidence: 92%

Investigations of Li-Ion Battery Thermal Management Systems Based on Heat Pipes: A Review

Wu,

Niu,

Shao

et al. 2023

ACS Omega

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With increasing concerns about carbon emissions and the resulting climate impacts, Li-ion batteries have become one of the most attractive energy sources, especially in the transportation sector. For Li-ion batteries, an effective thermal management system is essential to ensure high-efficiency operation, avoid capacity degradation, and eliminate safety issues. Thermal management systems based on heat pipes can achieve excellent cooling performance in limited space and thus have been widely used for the temperature control of Li-ion batteries. In this paper, the thermal management systems of Li-ion batteries based on four types of heat pipes, i.e., flat single-channel heat pipes, oscillating heat pipes, flexible heat pipes, and microchannel heat pipes, are comprehensively reviewed based on the studies in the past 20 years. The effects of different influencing factors on the cooling performance and thermal runaway behavior of Li-ion batteries are thoroughly discussed in order to provide an in-depth understanding for researchers and engineers. It is concluded that for all types of thermal management systems based on heat pipes, water spray cooling could achieve better cooling performance than forced air cooling and water bath cooling, while its energy consumption is obviously smaller than forced air cooling. For thermal management systems based on oscillating heat pipes, improved heat transfer characteristics could be achieved by increasing the number of turns, using a relatively larger inner hydraulic diameter and using a length ratio between the evaporator and condenser higher than 1.0. Heat pipes fabricated by flexible materials suffer from permeation of noncondensable gases from ambient and leakage of working fluid. These issues could be partly resolved by adding thermal vias filled with metallic materials and covering the sealing part with indium coating or designing a multilayered structure with metallic materials in it. Moreover, the limitations and future trends of Li-ion battery thermal management systems based on heat pipes are presented. It is pointed out that the thermal runaway behavior and heating performance of battery thermal management systems based on heat pipes should be further elaborated. The analysis of this paper could provide valuable support for future investigations on Li-ion battery thermal management systems based on heat pipes; it could also guide the choice and design of Li-ion battery thermal management systems based on heat pipes in commercial use.

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Section: Btmss Based On Flat Single-channel Heat Pipesmentioning

confidence: 92%