Design And Implementation Of Lithium Batteries Formation Monitoring And Management System Based On Embedded Systems

Due to Lithium batteries’ long lives, no memory, low self-discharge rate, lowtemperature adaptability and etc., they are now widely used in all kinds of Consumerelectronics industry. Before leaving factory, the Lithium battery must be famated,therefore the Lithium batteries’ famation rely on the famation and testing equipment tocomplete. In recent years, the demand for lithium batteries are rapidly increasing, themain controller’s structure of traditional Lithium battery famation and testing equipmentis simple, and it is hard to realize complex control, thus it is impossible to designlarge-scale famation and testing device, which restricts the large number of Lithiumbatteries’ production. This paper is based on three-layer distributed lithium batteryfamaion and testing equipment, design of lithium battery famation monitoring andmanagement system based on embedded systems, the system can not only monitor andmanage128channels of single device, and can also realize expanding one moreformation devices.This dissertation is based on ARM9+Linux embedded development platform,designed and implemented with a set of Lithium batteries formation monitoring andmanagement system with Ethernet communications and CAN communications, whichhas small size, low power consumption, low cost and high-performance advantages. Thetopic has the following features:(1) For128channels of single device, a formation monitoring and managementstrategy was put forward, the strategy aims at how to manage128channels effectively,including the design of the communication protocol format, communication protocolanalysis, the data on the CAN bus flow improvements and system securitycommunication.(2) The system hardware platform expanded CAN communication peripherals,ARM9-based of S3C2440, and designed CAN driver by character device, andsuccessfully applied to the system through online test.(3) The system’s software system uses hierarchical design feature, compared withconventional bare control, which not only weakened the degree of coupling between adjacent layers of software, but also makes the software easier to maintain. Afterdesigning driver, the application software can control the hardware by simply call thedriver layer interface, which greatly reduces the complexity of the control.(4) The system provides formation display function, it can real-time display128channel battery formation state. In order to shorten the development time, reducedevelopment difficulty, the system transplant Qt4graphical interface library. Qt4has afeature of one writing, multiple compile and run on multiple platforms, which is a majorfeature of the design.After testing, the system is able to carry on Ethernet communication and CANcommunication, and can monitor and manage128battery formation channels with CANcommunicate, otherwise, it can expand more than one formation equipment, and canmonitor4DC bus monitoring.