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High-Voltage Battery System Concepts for ISO 26262 Compliance

机译：ISO 26262合规性高压电池系统概念

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Due to increasing concerns with petroleum usage and the increasing federal fuel economy regulations, electric powertrains have become more accepted by automotive manufacturers. The lithium-ion batteries employed in such systems are typically managed by an electronic battery management system (BMS). The BMS manages the battery to prevent thermal runaway and related thermal events, and is responsible for safety related functions such as thermal management, cell balancing, and controlling the connection to the vehicle's high-voltage DC bus. The ISO 26262 standard, introduced in final form in 2011, provides a framework for developing and validating automotive products that are safe from electronic and electrical system malfunctions, including BMS malfunctions, in passenger vehicles. This paper discusses options for BMS system development in accordance with ISO 26262. Hazards and risks of BMS malfunctions are identified and classified according to the standard. A concept BMS system is then developed according to ISO 26262 methodologies, including system architectures, requirements at multiple levels, and hardware architectural metrics. Architectures for battery systems design are developed and discussed, and conclusions are drawn regarding critical tradeoffs in safe battery designs for hybrid and electric vehicle application.
机译：由于具有越来越多的石油利用问题和增加的联邦燃料经济规定，电动动力传递由汽车制造商变得更加接受。在这种系统中采用的锂离子电池通常由电子电池管理系统（BMS）管理。 BMS管理电池以防止热失控和相关的热事件，并负责安全相关功能，如热管理，电池平衡和控制与车辆的高压直流总线的连接。 2011年以最终形式推出的ISO 26262标准为开发和验证了乘用车，包括BMS故障，包括BMS故障的汽车产品，提供了一种开发和验证汽车产品的框架。本文讨论了根据ISO 26262的BMS系统开发的选项。根据标准确定和分类BMS故障的危害和风险。然后根据ISO 26262方法开发了一个概念BMS系统，包括系统架构，多个级别的要求和硬件架构度量。开发和讨论了电池系统设计的架构，并绘制了关于混合动力和电动车辆应用的安全电池设计中的关键权衡的结论。

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