The design of small scaled solar battery charge and discharge control system

For the energy-saving lamps or other small power supply, this paper introduces a design about solar charging controller based on STC89C52RC MCU. By controlling the MOS tube switch , the microcontroller realizes the storage battery charging and discharging. Because of adopting the one-chip computer programming control, our device is a simple circuit and has low cost advantages. Experimental proof: our design conforms to the battery charge characteristics, extending battery life, Overcoming battery reverse connect and lightning.