| 摘要 |
PROBLEM TO BE SOLVED: To calculate charging capacity using the same part even tn the case of a change in a configuration of battery cells, by determining the charging current or the charging voltage of a storage means for calculating the charging capacity of a storage means, storing the data of a set value used for calculating a charging capacity, and making the data of a set value variable. SOLUTION: In calculating the value of the charging capacity of a battery cell train 26 charged by a charger 20, the charging current or the charging voltage of the battery cell train 26 is determined, and the charging capacity into the battery cell train 26 is calculated by a charging capacity calculating means 24. The set value used for calculating the charging capacity meeting the configuration of the battery cell train 26 is stored in the table of a EEPROM 25, and the set value is changed by a set value changing means 24b according to the configuration of the battery cell train 26 for calculating the charging capacity. Therefore, the charging amount indicating highly accurate remaining capacity is obtained, therefore a microcomputer 24 controls the charging and the discharging of the battery cell train 26 based on the data on the remaining capacity.
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