To provide a method for controlling the charging/discharging of a secondary battery for an automated guided vehicle, capable of correctly determining refresh charging/discharging timing to minimize a charging/discharging frequency.
This method for controlling the charging/discharging of the secondary battery for the automated guided vehicle includes a first discharging step, a voltage measuring step and a charging step. In the first discharging step, the secondary battery drives the automated guided vehicle to discharge a prescribed electric amount. In the voltage measuring step, a voltage of the secondary battery at a discharge ending time is measured when the first discharging step ends. In the charging step, when a voltage at the discharge ending time is higher than a set lower-limit voltage, a first charging step is performed to incompletely charge the secondary battery by a first charging current value, and when a voltage at the discharge ending time is lower than the set lower-limit voltage, a second charging step is performed to completely discharge the secondary battery and continuously completely charge the secondary battery by a second charging current value which is smaller than the first charging current value.
OKAWA KAZUHIRO
MORISHITA NOBUYASU
FUJIOKA TOKUYUKI
| JPH04308429A | 1992-10-30 | |||
| JP2002315218A | 2002-10-25 | |||
| JP2002017049A | 2002-01-18 | |||
| JPH03273830A | 1991-12-05 | |||
| JP2000201438A | 2000-07-18 |
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