Active Capacitive Buck Boost Balancer for LiFePO Cells with Combined Analog and Digital Control

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00384984" target="_blank" >RIV/68407700:21220/25:00384984 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/AE66163.2025.11197818" target="_blank" >http://dx.doi.org/10.1109/AE66163.2025.11197818</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/AE66163.2025.11197818" target="_blank" >10.1109/AE66163.2025.11197818</a>

Result language
angličtina
Original language name
Active Capacitive Buck Boost Balancer for LiFePO Cells with Combined Analog and Digital Control
Original language description
This paper presents an active balancing circuit for LiFePO4 cells. The circuit was designed to work from 2 cells up to 16 cells and a nominal balancing current of 2A. The current setpoint can be changed with a voltage signal from a microcontroller. The circuit however works independently from the microcontroller, increasing safety of the device and decreasing microcontroller load. The circuit is comprised from a bidirectional buck boost DC/DC converter charging a 20F super-capacitor, cell switches, current sense amplifier, current and voltage limiter and PWM signal generation. The current is sensed on the inductor´s parasitic resistance to save cost of a current sensor. The current limiter actively limits the charging current if necessary by shortening the PWM duty cycle. Similarly the capacitor voltage is measured and when the maximal value is reached the charging is stopped automatically in hardware, thereby lowering the microcontroller load. The circuit was experimentally verified and experimental results are presented
Czech name
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Czech description
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Project
<a href="/en/project/TN02000054" target="_blank" >TN02000054: Božek Vehicle Engineering National Center of Competence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
proceedings of the 30th International conference on Applied Electronics 2025
ISBN
9798331536473
ISSN
1803-7232
e-ISSN
1803-7232
Number of pages
4
Pages from-to
113-116
Publisher name
Fakulta elektrotechnická
Place of publication
Plzeň
Event location
Plzeň
Event date
Sep 8, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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