| 摘要 |
PROBLEM TO BE SOLVED: To equalize SOCs of unit cells by normal charging/discharging, without having to conduct special charging/discharging. SOLUTION: This battery assembly is constituted by connecting in series a plurality of unit cells, consisting of a rechargeable nickel-hydrogen secondary battery. Each unit cell is constituted to generate charging memory effect in almost the same SOC value in a range of SOC, in which charging/discharging is conducted. When the charge memory effect is occurs, if SOC is higher than a charge memory effect generating SOC value, charging efficiency drops. When normal charging/discharging is conducted, the SOCs of unit cells converge in the memory effect generating SOC value, and the SOCs of unit cells are equalized.
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