Experimental and Numerical Comparison of Temperature Profiles Created at Different Discharge Rates in Lithium Ion Batteries

Emre Torun; Ertan Buyruk

Makale detayları

Experimental and Numerical Comparison of Temperature Profiles Created at Different Discharge Rates in Lithium Ion Batteries

Yazarlar:

Emre Torun | Ertan Buyruk

Yayıncı:

Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar:

Enerji

Dergi:

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.7 Issue 2, pp.622-637

Belge Tipi:

Makale

Yayın Tarihi:

11/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001313007

pISSN:

2687-3729

Anahtar kelimeler:

Özet:

 Electric vehicles provide the electrical energy they need from battery systems. The voltage and current values required for the engine to run are provided by the vehicle batteries, thus enabling the vehicle to move. Battery cells release high amounts of heat energy both while charging and discharging during use of the vehicle. One of the necessary conditions for the batteries to work at maximum efficiency and high lifetime is to keep the battery operating temperature within a certain range. In this study, the temperature values of 18650 type Lithium Ion batteries used in electric vehicles at different discharge rates were experimentally measured, and the results were compared with the numerical data obtained by modeling the system in the Fluent Module of the Ansys program. While modeling the system, the heat generation rate of the battery was calculated using user defined function UDF in Fluent and included as an input to the numerical solution. It has been observed that the results obtained by numerical modeling are compatible with the experimental results and the relative error is quite low, especially at low discharge rates.

 Electric vehicles provide the electrical energy they need from battery systems. The voltage and current values required for the engine to run are provided by the vehicle batteries, thus enabling the vehicle to move. Battery cells release high amounts of heat energy both while charging and discharging during use of the vehicle. One of the necessary conditions for the batteries to work at maximum efficiency and high lifetime is to keep the battery operating temperature within a certain range. In this study, the temperature values of 18650 type Lithium Ion batteries used in electric vehicles at different discharge rates were experimentally measured, and the results were compared with the numerical data obtained by modeling the system in the Fluent Module of the Ansys program. While modeling the system, the heat generation rate of the battery was calculated using user defined function UDF in Fluent and included as an input to the numerical solution. It has been observed that the results obtained by numerical modeling are compatible with the experimental results and the relative error is quite low, especially at low discharge rates.

 Electric vehicles provide the electrical energy they need from battery systems. The voltage and current values required for the engine to run are provided by the vehicle batteries, thus enabling the vehicle to move. Battery cells release high amounts of heat energy both while charging and discharging during use of the vehicle. One of the necessary conditions for the batteries to work at maximum efficiency and high lifetime is to keep the battery operating temperature within a certain range. In this study, the temperature values of 18650 type Lithium Ion batteries used in electric vehicles at different discharge rates were experimentally measured, and the results were compared with the numerical data obtained by modeling the system in the Fluent Module of the Ansys program. While modeling the system, the heat generation rate of the battery was calculated using user defined function UDF in Fluent and included as an input to the numerical solution. It has been observed that the results obtained by numerical modeling are compatible with the experimental results and the relative error is quite low, especially at low discharge rates.

 Elektrikli araçlar ihtiyaç duydukları elektrik enerjisini batarya sistemlerinden sağlarlar. Motorun çalışması için gerekli gerilim ve akım değerleri araç bataryaları tarafından sağlanır ve bu şekilde aracın hareket etmesi sağlanır. Batarya hücreleri hem şarj olurken hem de aracın kullanım sırasında deşarj olurken yüksek miktarda ısı enerjisi açığa çıkarırlar. Bataryaların maksimum verimde ve yüksek ömürde çalışabilmeleri için gerekli şartlardan biri de batarya çalışma sıcaklığını belirli aralıkta tutmaktır. Sunulan bu çalışmada elektrikli araçlarda kullanılan 18650 tip Lityum İyon bataryalarında farklı deşarj hızlarında oluşan sıcaklık değerleri deneysel olarak ölçülmüş, sonuçlar Ansys programı Fluent Modülünde sistemin modellenerek elde edildiği sayısal veriler ile kıyaslanmıştır. Sistem modellenirken batarya ısı üretimi Fluentde kullanıcı tanımlı fonksiyon UDF yazılarak hesaplanmış ve sayısal çözüme girdi olarak dâhil edilmiştir. Sayısal modelleme ile elde edilen sonuçların deneysel sonuçlar ile uyumlu olduğu ve özellikle düşük deşarj hızlarında bağıl hatanın oldukça düşük olduğu gözlemlenmiştir.

Makale detayları

Experimental and Numerical Comparison of Temperature Profiles Created at Different Discharge Rates in Lithium Ion Batteries

Yazarlar:

Emre Torun | Ertan Buyruk

Yayıncı:

Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar:

Enerji

Dergi:

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.7 Issue 2, pp.622-637

Belge Tipi:

Makale

Yayın Tarihi:

11/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001313007

pISSN:

2687-3729

Electric Vehicle

Lithium-Ion Batteries

Heat Generation in Batteries

Thermal Modelling of BatteriesElektrikli Araç

Lityum iyon Bataryalar

Bataryalarda Isı Üretimi

Bataryaların Termal Modellenmesi

Sayı

Makale detayları

Yazarlar: Emre Torun | Ertan Buyruk

Yayıncı: Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar: Enerji

Dergi: Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.7 Issue 2, pp.622-637

Belge Tipi: Makale

Yayın Tarihi: 11/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001313007

pISSN: 2687-3729

Sayı

Yazarlar:

Emre Torun | Ertan Buyruk

Yayıncı:

Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar:

Enerji

Dergi:

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.7 Issue 2, pp.622-637

Belge Tipi:

Makale

Yayın Tarihi:

11/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001313007

pISSN:

2687-3729