| The batteries has brought great changes to people’s life with its birth, and it is such adevice: the inside of the battery materials through chemical reaction, the reaction is reversible,and then convert chemical energy to electrical energy. From the birth of lead-acid battery,researchers have never stopped studying how to improve its performance, at the same time,innovation has been the continuation of charging technology.With the progress of science and technology, modern power electronics technology,power gives birth to a new technology, namely the switching power supply technology, thetechnical innovation of traditional old charger, stable voltage outp ut when charging is the useof pulse width modulation means to adjust the MOS time ratio to achieve. High efficiency,small and light, is the basic characteristics of the switching power supply with thedevelopment of electronic industry, but also represent the general trend of modernization.Now the most fashionable switch power AC switching power supply and DC switching powersupply two. This is a DC/DC switching power supply core inverter circuit.This paper is a fast charger designed for lead-acid batteries, mainly include the followingcontents: A comprehensive way of charging at home and abroad analyzes the characteristicsand shortcomings of the current battery charging method proposed in this paper chargingmethod; In the circuit design of the lead-acid battery, the charging circuit is given a maincircuit overvoltage protection circuit generates a PWM control circuit core; AddingATmega16microcontroller to achieve the A/D sampling, LCD, PWM control chip producedSG3525AN waveform; Detailing SG3525AN chip applications; The use of part of the circuitMultisim simulation software, in order to protect the program can be implemented.In the design of the charger, the realization of intelligent fast charge indicators, with thehelp of simulation reduces the cost and maximize. |
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