INVESTIGATION AND DESIGN OF AN ACTIVE CELL BALANCING SYSTEM FOR LI-ION BATTERIES

Yıl 2019, Cilt: 7 Sayı: 4, 869 - 877, 19.12.2019

Enver Derun Karabeyoğlu , Eda Güzel , Halis Kılıç , Baykal Sarıoğlu , Yiğit Dağhan Gökdel Mustafa Fazıl Serincan

https://doi.org/10.21923/jesd.553295

Cited By: 1

Öz

A type of active battery cell balancing system
based on buck-boost converters is proposed in this study. By using equivalent
circuit model of the battery cells, proposed active balancing circuit is examined
in detail. An algorithm is developed to actively control the balancing
operation. The algorithm is also utilized to prevent any failures in the
balancing operation. The proposed system is simulated under low and heavy load.
The simulation results indicates that 25 mV imbalance between potentials of two
battery cells can be balanced out in approximately 147 seconds under low load
and in 127 seconds under high load.

Anahtar Kelimeler

Lithium-ion Battery, Cell Balancing, Battery Management System, Active Cell Balancing, Buck Boost Converter

Lİ-İYON BATARYALAR İÇİN AKTİF HÜCRE DENGELEME SİSTEMİ İNCELEMESİ VE TASARIMI

Öz

Bu çalışmada
lityum iyon bataryalar için gerilim azaltan-arttıran dönüştürücü tabanlı bir
aktif hücre dengeleme sistemi önerilmektedir. Aktif hücre dengeleme devresi
batarya hücreleri için eş değer devre modeli kullanılarak detaylı olarak
incelenmiştir. Dengeleme işlemini aktif olarak kontrol eden bir algoritma
geliştirilmiştir. Algoritma dengeleme sürecinde oluşacak hataları önleyecek
şekilde tasarlanmıştır. Önerilen sistemin düşük ve yüksek yük altında çalışma
durumları için benzetimi yapılmıştır. Benzetim sonuçlarına göre farklı şarj
durumlarındaki iki hücre arasındaki 25 mV’luk fark düşük yük altında yaklaşık
olarak 147 saniyede, yüksek yük altında 127 saniyede dengelenmektedir.

Anahtar Kelimeler

Li-iyon Batarya, Hücre Dengeleme, Batarya Yönetim Sistemi, Aktif Dengeleme, Azaltan Arttıran Dönüştürücü

Kaynakça

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