摘要
基于光伏发电的嵌入式系统电源,利用铅酸电池、太阳能电池板和相应电路,调控光能采集并进行储存。通过UC3906铅酸电池充电管理芯片及外围电路构成智能充电模块,最大限度延长了铅酸电池的使用寿命;利用Buck-Boost电路和单片机控制回路提供太阳能电池板最大功率跟踪,保证了供电效率;采用光电耦合器提供双电源切换功能,确保在极端条件下供电的持久性。电源能量来自太阳,具有环保节能的优势;电源电路相对简单,利于搭建,仅需单片机提供基本的控制电平,非常适合作为安置在野外的嵌入式系统电源。
Embedded system power based on photovokaic power generation uses lead-acid battery,solar panels and corresponding circuit to collect energy,store and switch. Intelligent charging module constituted by UC3906 lead-acid battery charging management chip and its peripheral circuit prolongs the service life of lead-acid batteries. Buck-Boost circuit and microcontroller control loops provide solar panels maximum power tracing which guarantees the efficiency. Double power switch function adopted by photoelectric couplers insures the power supply in extreme conditions of permanence. The energy source is from the sun with the advantage of environmental protection and energy saving. The power circuit is relatively simple and only needs to be provided with basic level control by microcontroller, perfect for embedded system power supply resettlement in the field.
出处
《单片机与嵌入式系统应用》
2011年第10期19-22,共4页
Microcontrollers & Embedded Systems
关键词
太阳能
铅酸电池
充电管理芯片
最大功率跟踪
光耦切换电路
solar
lead-acid battery
charge control chip
maximum power tracing
light-coupler switching circuit
