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插电式混合动力汽车的纯电动模式和高效的发动机运行模式,能够有效提高汽车节油率。但由于系统的复杂度和电子部件的大量应用,对系统的安全性和可靠性有较高的要求,通过参考国际通用的ISO26262道路车辆功能安全标准对动力系统功能安全进行系统有效的分析,使整车及混合动力驱动系统在发生异常时进入安全状态以保证人员安全和整车安全是混动系统对整车安全开发的重要一环。在系统分析基础上设计混合动力控制器硬件及软件安全监控机制,通过整车控制器(HCU)内部监控芯片对主控制芯片监控及主控制芯片内部互相独立功能模块的对比监控控制器状态,使混合动力驱动系统在异常情况下进入安全状态,以保证人员和整车安全。
Pure electric plug-in hybrid electric vehicle mode and efficient engine operation mode, can effectively improve the car fuel efficiency. However, due to the complexity of the system and the large number of applications of electronic components, there is a high demand for the safety and reliability of the system. By systematically and effectively analyzing the functional safety of the power system by referring to the international ISO26262 road vehicle functional safety standard, Vehicle and hybrid drive system in the event of anomalies into a safe state to ensure the safety of personnel and vehicle safety is a mixed system on vehicle safety development an important part. On the basis of system analysis, the hardware and software security monitoring mechanism of hybrid controller is designed. By monitoring the state of the main control chip and the independent functional modules of the main control chip by the internal monitoring chip of the vehicle controller (HCU), the status of the controller is monitored Hybrid drive system into a safe state in exceptional circumstances, to ensure that personnel and vehicle safety.