A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262
Battery monitoring integrated circuits (BMIC) employed in the battery management system (BMS) for electric vehicle (EV) application are subjected to rigorous requirements for accuracy, reliability, and safety. This paper presents a design of an 8-cell battery pack monitoring and balancing IC, which...
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of Circuits and Systems |
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| Online Access: | https://ieeexplore.ieee.org/document/10506220/ |
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| author | Byambajav Ragchaa Liji Wu Xiangmin Zhang |
| author_facet | Byambajav Ragchaa Liji Wu Xiangmin Zhang |
| author_sort | Byambajav Ragchaa |
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| description | Battery monitoring integrated circuits (BMIC) employed in the battery management system (BMS) for electric vehicle (EV) application are subjected to rigorous requirements for accuracy, reliability, and safety. This paper presents a design of an 8-cell battery pack monitoring and balancing IC, which can be stacked to monitor and balance a total of 128 cells. The design of battery cell voltage detection is realized by a second order, incremental <inline-formula> <tex-math notation="LaTeX">$\Sigma \Delta $ </tex-math></inline-formula> ADC with a high-voltage channel multiplexing scheme. The accuracy of cell voltage detection, achieved with a margin of ±10 mV, is confirmed by the test results. In this paper, we aim to enhance the reliability and robustness of the BMIC by implementing fault detection mechanisms within its circuits and incorporating fault recovery functionalities through digital circuits. To meet safety requirements, this paper adheres to the functional safety standard ISO 26262 for road vehicles. The quantitative analysis of hardware architectural metrics for the proposed BMIC demonstrates compliance with ASIL-D requirements for functional safety. |
| format | Article |
| id | doaj-art-fb78e0366fa74c45a4a99e5dbaf42d2c |
| institution | Kabale University |
| issn | 2644-1225 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Circuits and Systems |
| spelling | doaj-art-fb78e0366fa74c45a4a99e5dbaf42d2c2025-01-21T00:02:52ZengIEEEIEEE Open Journal of Circuits and Systems2644-12252024-01-01516617710.1109/OJCAS.2024.339182910506220A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262Byambajav Ragchaa0https://orcid.org/0009-0005-4739-5198Liji Wu1https://orcid.org/0000-0003-1318-6329Xiangmin Zhang2School of Integrated Circuits, Tsinghua University, Beijing, ChinaSchool of Integrated Circuits, Tsinghua University, Beijing, ChinaSchool of Integrated Circuits, Tsinghua University, Beijing, ChinaBattery monitoring integrated circuits (BMIC) employed in the battery management system (BMS) for electric vehicle (EV) application are subjected to rigorous requirements for accuracy, reliability, and safety. This paper presents a design of an 8-cell battery pack monitoring and balancing IC, which can be stacked to monitor and balance a total of 128 cells. The design of battery cell voltage detection is realized by a second order, incremental <inline-formula> <tex-math notation="LaTeX">$\Sigma \Delta $ </tex-math></inline-formula> ADC with a high-voltage channel multiplexing scheme. The accuracy of cell voltage detection, achieved with a margin of ±10 mV, is confirmed by the test results. In this paper, we aim to enhance the reliability and robustness of the BMIC by implementing fault detection mechanisms within its circuits and incorporating fault recovery functionalities through digital circuits. To meet safety requirements, this paper adheres to the functional safety standard ISO 26262 for road vehicles. The quantitative analysis of hardware architectural metrics for the proposed BMIC demonstrates compliance with ASIL-D requirements for functional safety.https://ieeexplore.ieee.org/document/10506220/Battery management systembattery monitoring integrated circuitfault detectionISO 26262 |
| spellingShingle | Byambajav Ragchaa Liji Wu Xiangmin Zhang A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262 IEEE Open Journal of Circuits and Systems Battery management system battery monitoring integrated circuit fault detection ISO 26262 |
| title | A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262 |
| title_full | A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262 |
| title_fullStr | A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262 |
| title_full_unstemmed | A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262 |
| title_short | A Design of Fault-Tolerant Battery Monitoring IC for Electric Vehicles Complying With ISO 26262 |
| title_sort | design of fault tolerant battery monitoring ic for electric vehicles complying with iso 26262 |
| topic | Battery management system battery monitoring integrated circuit fault detection ISO 26262 |
| url | https://ieeexplore.ieee.org/document/10506220/ |
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