| 摘要 |
The present invention relates to a control method of a battery for a vehicle and comprises; a step in which a control unit receives the state information of a battery from a battery sensor unit; a step in which the control unit calculates the state of charge (SOC) from the state information of the battery; a first charging step in which the control unit charges the battery with a constant current charging mode according to the change of the SOC when it is determined that the battery is completely not charged; and a second charging step in which the control unit charges the battery with a constant voltage charging mode when it is determined that the battery is in the overcharge state. According to the present invention, the control method of a battery for a vehicle performs optimum charge and discharge according to the charge state of a battery and a battery structure material and extends the lifespan of the battery and improves driver convenience and vehicle stability. [Reference numerals] (AA) Start; (BB) End; (S100) State information of a battery is inputted; (S102) SOC calculation; (S104) Full charge state?; (S106) CCA calculation; (S108) CCA >= reference value?; (S110) Boosting charge possible?; (S112) Boosting charge; (S114) Normal charge; (S116) Overcharge state?; (S118) Constant voltage charge; (S120) Risk condition satisfaction?; (S122) Continuance during a risk time?; (S124) Battery fuse cutoff; (S126) Warning message output; (S128) Trickle charge; (S130) Discharge mode |
