University of Oulu

Rabiei, M., Gharehghani, A., Saeedipour, S., Andwari, A. M., & Könnö, J. (2023). Proposing a Hybrid BTMS Using a Novel Structure of a Microchannel Cold Plate and PCM. Energies, 16(17), 6238.

Proposing a hybrid BTMS using a novel structure of a microchannel cold plate and PCM

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Author: Rabiei, Moeed1; Gharehghani, Ayat1; Saeedipour, Soheil1;
Organizations: 1School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran
2Machine and Vehicle Design (MVD), Materials and Mechanical Engineering, Faculty of Technology, University of Oulu, FI-90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 5.7 MB)
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Language: English
Published: Multidisciplinary Digital Publishing Institute, 2023
Publish Date: 2023-09-07


The battery thermal management system (BTMS) for lithium-ion batteries can provide proper operation conditions by implementing metal cold plates containing channels on both sides of the battery cell, making it a more effective cooling system. The efficient design of channels can improve thermal performance without any excessive energy consumption. In addition, utilizing phase change material (PCM) as a passive cooling system enhances BTMS performance, which led to a hybrid cooling system. In this study, a novel design of a microchannel distribution path where each microchannel branched into two channels 40 mm before the outlet port to increase thermal contact between the battery cell and microchannels is proposed. In addition, a hybrid cooling system integrated with PCM in the critical zone of the battery cell is designed. Numerical investigation was performed under a 5C discharge rate, three environmental conditions, and a specific range of inlet velocity (0.1 m/s to 1 m/s). Results revealed that a branched microchannel can effectively improve thermal contact between the battery cell and microchannel in a hot area of the battery cell around the outlet port of channels. The designed cooling system reduces the maximum temperature of the battery cell by 2.43 °C, while temperature difference reduces by 5.22 °C compared to the straight microchannel. Furthermore, adding PCM led to more uniform temperature distribution inside battery cell without extra energy consumption.

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Series: Energies
ISSN: 1996-1073
ISSN-E: 1996-1073
ISSN-L: 1996-1073
Volume: 16
Issue: 17
Article number: 6238
DOI: 10.3390/en16176238
Type of Publication: A1 Journal article – refereed
Field of Science: 214 Mechanical engineering
Copyright information: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (