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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/TN02000054" target="_blank" >TN02000054: Národní centrum kompetence inženýrství pozemních vozidel Josefa Božka</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

proceedings of the 30th International conference on Applied Electronics 2025

ISBN

9798331536473

ISSN

1803-7232

e-ISSN

1803-7232

Počet stran výsledku

4

Strana od-do

113-116

Název nakladatele

Fakulta elektrotechnická

Místo vydání

Plzeň

Místo konání akce

Plzeň

Datum konání akce

8. 9. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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