Polymeric hollow fibers: Uniform temperature of Li-ion cells in battery modules

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Polymeric hollow fibers: Uniform temperature of Li-ion cells in battery modules

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20303 - Thermodynamics

Project

<a href="/en/project/TH04010031" target="_blank" >TH04010031: Heat exchangers with hollow polymeric fibers for automotive</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Thermal Engineering

ISSN

1359-4311

e-ISSN

—

Volume of the periodical

159

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

1-11

UT code for WoS article

000475999100110

EID of the result in the Scopus database

2-s2.0-85067387174