Research On Battery Management Calibration System Based On CCP Protocol

Battery management system which is the linking ligament of battery and HEV is the key part for HEV.It monitors the state of battery,estimates the state of charge and adjusts the battery charge-discharge power limit.All these are the foundation of the car's energy flow.The calibration program based on CCP protocol is developed which is mainly composed of the battery management,USB-CAN communication convert module and the calibration platform software.The CCP protocol can improve the system's scalability and versatility.The paper outlines the CCP protocol and the composition of calibration system. The battery system's hardware for ChangAn HEV is designed.On this basis,the paper introduces how to design CCP driver and software development for battery management usingμC/OS-Ⅱ.The MCU MC9S12DT128 is the core controller of the battery management system,while software design is competed in Integrated Development Environment CodeWarrior.UML modeling tool is used to model for calibration software platform functional requirements and dynamic behavior,and Visual C++ 6.0 is used to complete software.In order to verify the calibration system function,the calibration tests have been done.The result indicates that the CCP protocol can make the calibration of the system facilely and help the battery is used more reasonable.