Use of Air Cooling with a Fire Extinguishing Device to Protect Cylindrical Battery Cells 18650

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F22%3A10251934" target="_blank" >RIV/61989100:27360/22:10251934 - isvavai.cz</a>

Result on the web

<a href="https://dspace.vsb.cz/handle/10084/149048" target="_blank" >https://dspace.vsb.cz/handle/10084/149048</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Use of Air Cooling with a Fire Extinguishing Device to Protect Cylindrical Battery Cells 18650

Original language description

The thesis deals with the thermal system of 18650 cylindrical battery cells and the implementation of crisis subcooling or quenching of overheated cells. A compact module equipped with thermocouples was created from individual battery cells. The design was fabricated on an FDM 3D printer using PETG material. Experimental measurements were made to determine the time histories of temperature rise in the module, where the difference between active cooling and no cooling was clearly shown. It is the air cooling that offers the possibility of implementing a fire extinguishing system to quickly cool or extinguish the module if necessary. The previous experiment was followed by another one in conjunction with a fire extinguishing system. The module was again loaded with an electric current. As soon as the hottest battery cell in the module reached the maximum safe temperature of 40 oC, the extinguishing system was triggered. The extinguishing system was able to cool the battery immediately, but then the temperature rose again after the valve was closed, but only to operating temperatures. The cooling effect of the fire extinguishing system is large and further optimisation is required with a focus on higher efficiency and pressure control from the fire extinguisher. This work demonstrates the potential for rapid subcooling that can slow/stop the temperature rise above allowable limits.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/CK01000047" target="_blank" >CK01000047: Increasing of safety of the electric vehicles produced in small series</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Article name in the collection

PhD students´ day FMST 2022

ISBN

978-80-248-4653-8

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

139-142

Publisher name

Vysoká škola báňská - Technická univerzita Ostrava

Place of publication

Ostrava

Event location

Ostrava

Event date

Sep 12, 2022

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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