NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES

Haydar Kepekçi; Mehmet Emin Ağca

TR EN

HEKSAGONAL BOR NİTRÜR DOLDURULMUŞ EPOKSİ KOMPOZİT KULLANILARAK 18650 LİTYUM İYON PİLLERİN DEĞİŞKEN HAVA AKIŞ HIZLARINDA TERMAL YÖNETİMİNİN SAYISAL ARAŞTIRMASI

Abstract

18650 lityum iyon piller, termal kaçağı önlemek ve güvenli çalışmayı sağlamak için termal yönetime ihtiyaç duymaktadır. Bu çalışma, bir batarya modülündeki saf epoksi reçine ile hekzagonal bor nitrür (h-BN) katkılı epoksi kompozitin termal performansını karşılaştırmak amacıyla hesaplamalı akışkanlar dinamiği yöntemini kullanmaktadır. Analizler, 25°C ortam sıcaklığında ve 2, 3 ve 4 m/s hava giriş hızlarında gerçekleştirilmiştir. Sıcaklık dağılımları, maksimum sıcaklıklar ve çıkış sıcaklıkları değerlendirilmiştir. h-BN katkılı epoksi, yüksek termal iletkenliği sayesinde tüm çalışma koşullarında maksimum sıcaklıkları düşürmüştür. 2 m/s hızında maksimum sıcaklık, saf epoksideki 48.08°C seviyesinden epoksi/h-BN kompoziti ile 38.8°C'ye gerilemiştir. Sadece havanın kullanıldığı kontrol durumunda tahmin edilen sıcaklık 4600°C'yi aşarak ısı atımının yetersiz kaldığını göstermiştir. Genel olarak kompozit malzeme, sıcaklık homojenliğini iyileştirmiş ve daha güvenli, daha güvenilir batarya operasyonunu desteklemiştir.

Keywords

NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES

Abstract

18650 lithium-ion batteries require thermal management to prevent thermal runaway and ensure safe operation. This study uses computational fluid dynamics to compare the thermal performance of pure epoxy resin and a hexagonal boron nitride (h-BN)-doped epoxy composite in a battery module. Analyses have been conducted at an ambient temperature of 25°C and air inlet velocities of 2, 3, and 4 m/s. Temperature distributions, maximum temperatures, and outlet temperatures have been evaluated. The h-BN-doped epoxy reduced the maximum temperatures across all operating conditions due to its high thermal conductivity. At 2 m/s, the maximum temperature decreased from 48.08°C with pure epoxy to 38.8°C with the epoxy/h-BN composite. In the air-only control case, the predicted temperature exceeded 4600°C, indicating insufficient heat dissipation. Overall, the composite improved temperature uniformity and supported safer, more reliable battery operation.

Keywords

References

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Details

Primary Language

English

Subjects

Material Design and Behaviors

Journal Section

Research Article

Authors

Haydar Kepekçi
0000-0002-0037-8332
Türkiye

Mehmet Emin Ağca ^*
0000-0002-8995-2133
Türkiye

Publication Date

September 3, 2026

Submission Date

February 24, 2026

Acceptance Date

July 14, 2026

Published in Issue

Year 2026 Volume: 29 Number: 3

IZ

https://izlik.org/JA34BE24HS

Cite

RIS / Bibtex

APA

Kepekçi, H., & Ağca, M. E. (2026). NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 29(3), 1320-1331. https://izlik.org/JA34BE24HS

AMA

1.Kepekçi H, Ağca ME. NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES. KSU J. Eng. Sci. 2026;29(3):1320-1331. https://izlik.org/JA34BE24HS

Chicago

Kepekçi, Haydar, and Mehmet Emin Ağca. 2026. “NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES”. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 29 (3): 1320-31. https://izlik.org/JA34BE24HS.

EndNote

Kepekçi H, Ağca ME (September 1, 2026) NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 29 3 1320–1331.

IEEE

[1]H. Kepekçi and M. E. Ağca, “NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES”, KSU J. Eng. Sci., vol. 29, no. 3, pp. 1320–1331, Sept. 2026, [Online]. Available: https://izlik.org/JA34BE24HS

ISNAD

Kepekçi, Haydar - Ağca, Mehmet Emin. “NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES”. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 29/3 (September 1, 2026): 1320-1331. https://izlik.org/JA34BE24HS.

JAMA

1.Kepekçi H, Ağca ME. NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES. KSU J. Eng. Sci. 2026;29:1320–1331.

MLA

Kepekçi, Haydar, and Mehmet Emin Ağca. “NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES”. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, vol. 29, no. 3, Sept. 2026, pp. 1320-31, https://izlik.org/JA34BE24HS.

Vancouver

1.Haydar Kepekçi, Mehmet Emin Ağca. NUMERICAL INVESTIGATION OF THE THERMAL MANAGEMENT OF 18650 LITHIUM-ION BATTERIES USING HEXAGONAL BORON NITRIDE-FILLED EPOXY COMPOSITE UNDER VARYING AIRFLOW VELOCITIES. KSU J. Eng. Sci. [Internet]. 2026 Sep. 1;29(3):1320-31. Available from: https://izlik.org/JA34BE24HS