| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging method capable of efficiently and inexpensively charging a nickel hydrogen storage battery, even in the case of a direct current source using natural energy such as solar power generation or the like. SOLUTION: As a charging unit, a plurality of nickel hydrogen storage battery cells, which constitute a packed battery, is divided into a plurality of storage battery modules comprising one or a plurality of cells, and the divided storage battery module is charged, switching the storage battery module, whenever a prescribed charging time threshold value elapses at every charging unit. Namely, when a storage battery module to be charged is selected (S01) and the present accumulated current capacity is below a prescribed accumulated current capacitor threshold value (YES in S01), the storage battery module is connected to the charger (S03) to start charging and to activate a timer (S04), and when the prescribed charging time threshold value is reached (YES in S04), the charging operation is switched to the next storage battery module (S06, S07). These operations are repeated till the accumulated current capacity reaches the accumulated current capacity threshold value (NO in S02). COPYRIGHT: (C)2008,JPO&INPIT
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