Charging device with compensation function and three-stage constant current charging method

摘要

The present invention relates to a charging device for a nickel-metal hydride (Ni-MH) electric vehicle having a compensating function and a three-stage constant current charging method. According to an aspect of the present invention, there is provided a power supply system comprising: a power supply system for receiving a power supply and providing the power supply to a battery and a control stem; A nickel-metal hydride (Ni-MH) battery packed by a power source provided by a power supply system; And a control system that receives power from a power supply system and a nickel-metal hydride (Ni-MH) battery, outputs a signal for controlling the power supply system, and outputs control data to an external communication port. The three-stage constant current charging method includes: a system checking step: a condition comparison step: a one-step constant current charging step of starting charging with a charging ratio of C / 5; A first charge normal check step; A two-stage constant current charging step in which the charging ratio is lowered to C / 10 to perform two-stage charging; A second charge normal verification step; A three-stage constant current charging step in which the charging ratio is further lowered to C / 20 to perform three-stage charging; A third charge normal verification step; A charging termination step of terminating charging; A charging error step of determining a charging error; Display step. The effect of the present invention is to provide a charging device with a compensation function that shortens the charging time by 20% compared with the internati charging, secures charging stability against temperature and gas, and provides a charging convenience for the user, and a three-stage constant current charging method can do.