| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance cooling effects by introducing, for front to rear lines of batteries, cooling air that has not undergone heat exchange. SOLUTION: Batteries 13 are mounted on an intermediate frame 8 inside a battery frame 1, an air passage 12 of cooling air introduced into the underside of the batteries 13 from in front of the battery frame 1 and exhausted from above the rear of the battery frame 1 is formed, and the batteries 13 are set to gradually decrease in ground mounting height from their front to rear lines so that the cross-sectional area of the air passage 12 gets smaller from the front to the rear. Thus over the whole area from the front to rear lines of batteries 13, the cooling air is uniformly circulated from below to above the batteries 13.</p> |
