| 摘要 |
<p>PROBLEM TO BE SOLVED: To uniformly cool a battery system by causing a cooling medium to flow substantially uniformly through cooling-medium passages positioned on the upstream side and through cooling-medium passages positioned on the downstream side. SOLUTION: A distribution panel 30 having opening parts 32, 34,... with opening areas enlarged toward the upstream side of cooling air and fins 33, 35,... enlarged toward the upstream side and formed on part of the opening parts on the upstream side, is mounted in a cooling-air supply passage 26 provided on one side of battery modules 22 disposed with a fixed gap 24 left between them. Because ease of taking in cooling air is determined by the width of the openings and the extending width of the fins, and for opening parts without fins, it is determined by their opening areas, appropriate values for the width of the openings, the extending width of the fins, and the opening areas, are found by experiments, etc., and they are applied to the distribution panel 30. As a result, the cooling air flows uniformly through the respective gaps 24 and a battery system 20 can be uniformly cooled.</p> |
