| 摘要 |
<p>In a battery cooling structure, a battery case (13) housing a large number of battery modules (11) is formed into the shape of a rectangular tube having a cooling air inlet (16) and a cooling air outlet (17), and V-shaped cooling air guide channels (31) having a decreasing flow-path cross sectional area are provided on inner faces of air guide plates (23U,23L) that define upper and lower faces of the rectangular tube. The flow of cooling air is deflected by these V-shaped cooling air guide channels (31) toward a central part on the downstream side, thus effectively cooling the battery modules disposed in the central part, for which the cooling effect is poor to make uniform the temperature of the battery modules (11), resulting in a suppressed variation in capacity and lifetime. Moreover, since it is not necessary to provide a bypass passage in the battery case, it is possible to simplify the structure of the battery case, reduce the dimensions, and improve the degree of freedom in the layout.</p> |
