Abstract
This experimental device is composed of the battery characteristics test of the solar cell, rotating and leveling of the solar panel, photoelectric complementary power supply, battery capacity display and charging/capacity and internal resistance test unit. The battery characteristics test unit includes variable resistance circuit, modulation circuit, LED drive circuit and light intensity measurement and display circuit design. The rotating and leveling of the solar panel unit includes wind and rain sensor input, master control of MCU, vertical axis rotation, horizontal axis swing rotation, voice warning and so on. The photoelectric complementary power supply unit includes the charge and discharge controller, inverter, DC/AC load and control circuit. In addition, the battery capacity display unit includes signal input, analog-to-digital conversion and LED display/voice alarm circuit design. The battery charging /capacity and internal resistance test unit includes voltage regulator, constant current generation circuit, voltage detection, display circuit and control circuit. In this paper, the experimental contents and methods which can be carried out by the device are designed. The experiment of the device has the characteristics of rich knowledge integration, strong comprehensiveness and a flexible combination of contents.
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