基于XC2268N的纯电动汽车整车控制器设计

Design of Vehicle Control Unit for Battery Electric Vehicle Based on XC2268N

在纯电动厢式货车关于稳定运行和故障保护的技术标准下,基于英飞凌16位单片机XC2268N设计了一款应用于纯电动汽车的整车控制器。该设计方案在硬件上采用若干模块化电路搭设系统框架,实现信息采集、驱动输出和CAN网络等功能;在软件上设计了一种层次式架构,驱动层代码提供与硬件配置隔离的软件接口,调度层调用驱动软件以实现故障诊断与保护和安全运行等基本任务,核心层通过任务安排实现控制策略,实现代码的高鲁棒性和高可移植性,软件通过了依照MISRA-C标准进行的静态测试,使用模拟测试平台进行了集成测试和功能测试,并用实车路测实验验证了整车控制器的有效性。在典型的工况循环下对整车运行性能进行了评估。

Under the technique protocol of GH Auto N2 series pure electric van concerning steady operation and failure protection,a battery electric vehicles（BEV）vehicle control unit（VCU）is designed based on Infineon micro controller XC2268N. Hardware design of the VCU utilizes several modular circuits to build up system structure,and to further acquire functions like information acquisition,drive output and CAN （Controller Area Network）. Hierarchical architecture is imple-mented on software system to achieve high robustness and portability. Codes of base layer are invented to provide hardware- isolated software interface. Process layer invoke base layer code to support task implementation,such as fault detection and protection,and normal operation,thus to support core layer control strategies implementation. Code had passed MISRA-C standard in static testing. The VCU performed well in integration testing and function testing conducted on test platform and the ground test. The performance of the whole vehicle is analyzed according to the data of driving record under the typical working cycle.