| Lithium iron phosphate battery is a new type of lithium ion battery, which has many advantages. Such as high capacity, high output voltage, good charge and discharge characteristics, large current impact resistance, stable electrochemical performance, wide working temperature range, non-toxic, environment friendly.However, the traditional lead-acid, nickel metal hydride battery not only have many drawbacks but also there are some problems in the practical application, such as battery overcharge consistency problems wich is danger in actual usage. to fit the battery management system and the protection. Application of lithium iron phosphate battery has been successful applying to the car. many battery management system really in commercial production. Because of its outstanding performance in automotive applications, It has also been recognized in other fields. this paper talk about of the coal mine refuge chamber in the field of emergency power supply for Reseed & design using lithium iron phosphate battery power management system, lithium iron phosphate battery management system research and use of a 24V30 A batteries, the battery management system is flexible use, and can be used alone and can be used in the networking.Design architecture is ARM+MAX17830, the whole system adopts modular design concept, using the ARM core industrial grade based microprocessor MK60 as the main processor for data processing, use MAX17830 battery for information collection, An embedded operating system uCOS for task management. The main research contents are as follows:(1) On the performance of lithium iron phosphate battery. To understand the working principle of lithium iron phosphate battery, charge, discharge cycle characteristics and temperature characteristics of the test battery, and provide a theoretical basis and reference for the research and development of control parameters of lithium iron phosphate battery system.(2) Completed the ARM+MAX17830 architecture of 24V30 A lithium iron phosphate battery management system hardware design. Around the battery management system based on ARM+MAX17830 circuit design, problem solving,short circuit protection of low voltage high current multi parallel network problems,charge and discharge control and multi-path temperature collection technology.(3) Completed the software design of battery management system. System uses uCOS embedded real-time operating system kernel as a task management, according to different functions, the software is divided into several task modules, program in accordance with the modular programming ideas, to complete the software design of battery management system. |
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