Battery voltage transfer method for multi-cells Li-ion battery pack protection chips
| Autor: | Chen Chen, Tao Tao, Yu-Xin Liu, Kai Wu, Kai-Kai Wu, Hong-Yi Wang, Hao Zhang |
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| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
Computer science business.industry 020208 electrical & electronic engineering Electrical engineering 020206 networking & telecommunications Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Chip Battery pack Surfaces Coatings and Films CMOS Hardware_GENERAL Hardware and Architecture Signal Processing Service life Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Current (fluid) business Leakage (electronics) Voltage |
| Zdroj: | Analog Integrated Circuits and Signal Processing. 111:13-24 |
| ISSN: | 1573-1979 0925-1030 |
| DOI: | 10.1007/s10470-021-01836-9 |
| Popis: | In order to suppress leakage current caused in the traditional multi-cells series Li-ion battery pack protection system, a new battery voltage transfer method is presented in this paper, which uses the current generated in the transfer process of one of the batteries to compensate for the leakage of itself and other cells except the top cell. Based on the 0.18 µm Bipolar and CMOS and DMOS technology, this proposed circuit has been integrated into a 7-cells Li-ion battery charge and discharge protection chip successfully. The experimental results of cell balancing confirm that the balancing algorithm can help with the shortage of the voltage transfer circuit. Furthermore, analysis of 20 samples shows that the new method can greatly suppress the battery leakage. Compared with the traditional solution, the voltage transfer circuit proposed in this paper greatly reduces the leakage current, which helps to extend the service life of the battery. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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