Intelligent charging machine for an electric forklift truck

Abstract

An intelligent charging machine for an electric forklift truck comprises a transformer, two silicon-controlled rectifier circuits arranged at two output terminals of the transformer, an accumulator anode and an accumulator cathode arranged at two output terminals of the silicon-controlled rectifier circuits respectively; a current divider is arranged between the accumulator cathode and the cathode output terminal of the silicon-controlled rectifier circuit; two terminals of the current divider are connected with a current detection amplification circuit; the intelligent charging machine also comprises a micro-processor, an A / D conversion circuit, a D / A conversion circuit and a display module; the A / D conversion circuit is connected with the current detection amplification circuit; the intelligent charging machine also comprises a trigger board which is connected with the control terminal of the silicon-controlled rectifier circuit; and a charging current control circuit is connected between the trigger board and the D / A conversion circuit. The intelligent charging circuit displays various charging parameters by a digitron, automatically judges the charging plenitude of the accumulator comprehensively by various methods, changes the over-charging and under-charging of the accumulator, avoids damaging the accumulator in advance and prolongs the service life of the accumulator.

Description

technical field [0001] The invention relates to the technical field of charging electric forklifts, in particular to an intelligent charger for electric forklifts. Background technique [0002] In the traditional electric forklift charging technology, the commonly used modes are constant voltage charging, constant voltage and current limiting charging, and constant current charging. The serious phenomenon of overcharging and undercharging of the battery often leads to premature damage of the battery. According to statistical data, the average lifespan of lead-acid batteries in electric forklifts is only more than one year, which is much shorter than the 750 times of battery cycles indicated by battery manufacturers, and the service life of 2 to 3 years. In addition to the factors of improper use of batteries, another main reason is the problem of smart chargers for electric forklifts. Contents of the invention [0003] In order to solve the problems existing in the curre...

AI Technical Summary

Problems solved by technology

[0002] In the traditional electric forklift charging technology, the commonly used modes are constant voltage charging, constant voltage limiting current charging, constant current charging and other modes; the method of judging the battery sufficiency mostly adopts the time method or the voltage method. This simple judgment method has The serious phenomenon of overcharging and undercharging of the battery often leads to premature damage of the battery

According to statistical data, the average lifespan of lead-acid batteries in electric forklifts is only more than one year, which is much shorter than the 750 times of battery cycles indicated by battery manufacturers, and the service life is 2 to 3 years.

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