功能安全
汽车工业
电池(电)
汽车工程
可靠性工程
计算机科学
安全标准
风险分析(工程)
危害分析
制造工程
工程类
嵌入式系统
系统工程
业务
功率(物理)
航空航天工程
物理
量子力学
作者
David Marcos,Maitane Garmendia,Jon Crego,José Antonio Cortajarena
出处
期刊:Energies
[MDPI AG]
日期:2021-10-21
卷期号:14 (21): 6942-6942
被引量:10
摘要
The increasing use of lithium batteries and the necessary integration of battery management systems (BMS) has led international standards to demand functional safety in electromobility applications, with a special focus on electric vehicles. This work covers the complete design of an enhanced automotive BMS with functional safety from the concept phase to verification activities. Firstly, a detailed analysis of the intrinsic hazards of lithium-based batteries is performed. Secondly, a hazard and risk assessment of an automotive lithium-based battery is carried out to address the specific risks deriving from the automotive application and the safety goals to be fulfilled to keep it under control. Safety goals lead to the technical safety requirements for the next hardware design and prototyping of a BMS Slave. Finally, the failure rate of the BMS Slave is assessed to verify the compliance of the developed enhanced BMS Slave with the functional safety Automotive Safety Integrity Level (ASIL) C. This paper contributes the design methodology of a BMS complying with ISO 26262 functional safety standard requirements for automotive lithium-based batteries.
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