Air Lead-acid Battery Design And Development Of Intelligent Charging System

Lead-acid aircraft battery, one of the essential electronic aircraft mounted devices, is used for aircraft starting, regulating voltage while switching heavy loaded electronic devices. In an emergency, it can also be used as the reserve electric source to maintain the communication and navigation functions of aircraft can operate normally. Because of its safety, stability, high performance and economy, lead-acid aircraft battery is widely used in general aviation airliners.With the purpose of getting rid of the problems about sudden power failure of aircraft battery which originated from traditional two-band constant current charge system, the thesis develops a quick intellectual aircraft battery charge technology, which is aimed at the charge safeguard of Gill24 series battery and introduce automatic control theory into the production of the charger. This method can reduce gassing and thermo runaway while charging, increase margin of safety, shorten charge time, prolong the battery actual life for 20% and save plenty of manpower and material resources. The thesis develops a quick intellectual aircraft battery charge technology to replace the original way to maintain the charge technology of Gill24 series lead-acid aircraft battery. And the thesis also finishes the fundamental design of the quick intellectual aircraft battery charger of Gill24 series lead-acid aircraft battery. The following is the main content of the thesis:Analyze the operational principle of Gill24 series aircraft battery and the causes of common breakdowns. And advance the way of maintenance.Compare and study various battery changers and analyze the factors as temperature and polarization phenomenon that may affect battery charge in detail.Design the Gill24 quick intellectual battery charger. The charger adopts the control system that uses DSPIC30F5011as MCU, the PWM three phase rectifiers and SHT11 temperature sensor. Program the software such as the system main program, feedback control program and temperature sensor program. Finally, it can be proved that the advantage of the quick intellectual aircraft battery charge system through contrast experiment. According to the test reports, intellectual aircraft battery charging system can cut the charging time by 30%, control the temperature of the storage battery effectively and avoid the phenomenon such as gassing and thermo runaway while charging.