Polymeric hollow fibers: Uniform temperature of Li-ion cells in battery modules
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU133237" target="_blank" >RIV/00216305:26210/19:PU133237 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S1359431119307422" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1359431119307422</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.applthermaleng.2019.113940" target="_blank" >10.1016/j.applthermaleng.2019.113940</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Polymeric hollow fibers: Uniform temperature of Li-ion cells in battery modules
Popis výsledku v původním jazyce
In the present work, a new heat exchanger is introduced for conventional liquid cooling of cylindrical type lithium-ion cells which are contained in battery packs/modules of electric vehicles. The coolant channels are made of polymeric hollow fibers (ø1 mm) embedded in a durable polydicyclopentadiene housing. Unlike commercially available metallic counterparts, the proposed design is lightweight, electrically non-conductive, and made of low cost materials. The prototype is stacked with 18650-type lithium-ion cells which are cycled with 1 C in the range of state-of-charge between 0 and 100%. Water/coolant circulates in the hollow fibers in the range of 0.1–0.7 l/min corresponding to the flow rate supplied to a battery delivering one kilowatt hour of electrical energy. For the coolant temperature of 23 °C at the inlet, maximum temperature of the hottest cell is between 49 and 35 °C in the given range of flow rates. Furthermore, temperature spread among cells is in the range between 14.6 and 4.6 °C. With the help of the mathematical optimization coupled with computational fluid dynamics simulations, we found that having a homogeneous temperature distribution among all the Li-ion cells is achievable. For that purpose, a non-uniform thickness of thermal insulation is suggested. The temperature homogeneity is preserved for a given flow rate of the coolant and even when temporal variations in the heat generation rate occur.
Název v anglickém jazyce
Polymeric hollow fibers: Uniform temperature of Li-ion cells in battery modules
Popis výsledku anglicky
In the present work, a new heat exchanger is introduced for conventional liquid cooling of cylindrical type lithium-ion cells which are contained in battery packs/modules of electric vehicles. The coolant channels are made of polymeric hollow fibers (ø1 mm) embedded in a durable polydicyclopentadiene housing. Unlike commercially available metallic counterparts, the proposed design is lightweight, electrically non-conductive, and made of low cost materials. The prototype is stacked with 18650-type lithium-ion cells which are cycled with 1 C in the range of state-of-charge between 0 and 100%. Water/coolant circulates in the hollow fibers in the range of 0.1–0.7 l/min corresponding to the flow rate supplied to a battery delivering one kilowatt hour of electrical energy. For the coolant temperature of 23 °C at the inlet, maximum temperature of the hottest cell is between 49 and 35 °C in the given range of flow rates. Furthermore, temperature spread among cells is in the range between 14.6 and 4.6 °C. With the help of the mathematical optimization coupled with computational fluid dynamics simulations, we found that having a homogeneous temperature distribution among all the Li-ion cells is achievable. For that purpose, a non-uniform thickness of thermal insulation is suggested. The temperature homogeneity is preserved for a given flow rate of the coolant and even when temporal variations in the heat generation rate occur.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20303 - Thermodynamics
Návaznosti výsledku
Projekt
<a href="/cs/project/TH04010031" target="_blank" >TH04010031: Tepelné výměníky s dutými polymerními vlákny pro automobilový průmysl</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Applied Thermal Engineering
ISSN
1359-4311
e-ISSN
—
Svazek periodika
159
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
11
Strana od-do
1-11
Kód UT WoS článku
000475999100110
EID výsledku v databázi Scopus
2-s2.0-85067387174