Intelligent variable constant-current quick-acting charger

The utility model discloses an intelligent variable constant-current quick charger. The utility model comprises a voltage changing circuit, a constant current source circuit and a micro computer, wherein an electrical source is coupled with the input end of the constant current source circuit through the voltage changing circuit, the output end of the constant current source circuit is connected with a battery to be charged, and a controlled end is arranged between the input end and the output end of the constant current source circuit; the control end of the micro computer is connected with the controlled end of the constant current source circuit. When the utility model is charged, the control end of the micro computer can control the output constant current of the constant current source circuit according to preset ideal charging technology value; therefore, electric current need in different charging stages is satisfied, the battery can accept electric energy as soon as possible, charging processes are completed safely, quickly and reasonably with less injury.