| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent output drop of the entire battery system due to temperature differences between batteries constructing the battery system. SOLUTION: This battery system 20 is assembled whereby a module 22a of large storage capacity is disposed on the end and a module 22c of a small storage capacity is disposed on the center, the modules are constituted of a battery 24a of large storage capacity on both ends and of a battery 24c of small storage capacity on the center. A battery output may not be taken out when the battery temperature becomes low, even theoretically dischargeable. The tendency becomes smaller in a battery of a larger storage capacity. By disposing the battery of large storage capacity on the periphery where the battery is cooled easily, reduction in output characteristics of the entire battery system 20 due to temperature differences between batteries can be prevented. Batteries are used sorting into ranks according to variations of storage capacity in manufacturing.</p> |
