A Low Cost and Fast Cell-to-Cell Balancing Circuit for Lithium-Ion Battery Strings
| Autor: | Van-Long Pham, Woojin Choi, Van-Tinh Duong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
Digital signal processor charge equalizer Computer Networks and Communications Computer science 020209 energy Energy transfer lcsh:TK7800-8360 push-pull converter 02 engineering and technology Lithium-ion battery 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Digital signal processing Push–pull converter battery management system (BMS) Cell voltage business.industry 020208 electrical & electronic engineering String (computer science) lcsh:Electronics Electrical engineering Hardware and Architecture Control and Systems Engineering Signal Processing business cell-to-cell balancing |
| Zdroj: | Electronics Volume 9 Issue 2 Electronics, Vol 9, Iss 2, p 248 (2020) |
| ISSN: | 2079-9292 |
| DOI: | 10.3390/electronics9020248 |
| Popis: | This paper proposes a fast cell-to-cell balancing circuit for lithium-ion battery strings. The proposed method uses only one push-pull converter to transfer energy between high- and low-voltage cells directly for a fast balancing speed. The switch network for selecting a certain pair of cells is implemented using relays to achieve a low cost. The control circuit is composed of a battery-monitoring IC and a digital signal processor (DSP) to monitor the cell voltage and to protect the batteries. In order to prove the validity of the proposed method, a prototype circuit is built with twelve lithium-ion batteries in a string. The experimental results show that it takes only 50 min to balance twelve lithium-ion batteries during the charge with 89.5% maximum efficiency. The outstanding performance of the proposed cell balancing circuit is verified through its comparison with other methods in terms of several factors, such as the balancing time and the implementation cost. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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