Heat-pipe based spray-cooling thermal management system for lithium-ion battery: Experimental study and optimization
| Autor: | Guanyi Chen, Yong Shi, Shurong Lei |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
Battery (electricity) Materials science 020209 energy Mechanical Engineering Nuclear engineering Lithium iron phosphate Condensation 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Lithium-ion battery Heat pipe chemistry.chemical_compound Operating temperature chemistry Thermal 0202 electrical engineering electronic engineering information engineering Relative humidity 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer. 163:120494 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2020.120494 |
| Popis: | Today, performance of lithium-ion battery is still limited by its operating temperature. The upper bound is capped by 50 ∘C. However, this limit is easily surpassed if batteries work at a high room temperature. In this article, sintered copper-powder heat pipe combining with water spray at its condensation section is designed to attack this issue−The former is sandwiched among batteries, removing battery heat by air convection under normal thermal conditions. When battery operation deteriorates at a room temperature beyond 40 ∘C, water spray functions for rapid heat dissipation by droplet evaporation. To assess effectiveness of this battery thermal management (BTM) design, discharge of lithium iron phosphate batteries at two large currents, I d = 12.5 A and 24 A, are performed at 40 ∘C. The cooling performance of the proposed BTM system is examined at different air speeds, air relative humidity, spraying frequencies and duty cycles. It is also compared to other heat-pipe based BTM approaches, and tested in transient cycles. The results demonstrate the proposed BTM system is highly effective. In the case of I d = 24 A , the maximum temperature and maximum temperature difference of the battery surface are dropped by 29.2 ∘C and 8.0 ∘C in comparison to those without BTM aids. It well protects lithium-ion battery operating at a large discharging current in an adverse thermal environment. |
| Databáze: | OpenAIRE |
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