| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery cooling structure that provides cooling for an assembled battery in such a manner that the temperatures of battery modules forming the assembled battery become more uniform.SOLUTION: A battery cooling structure cools, with cooling air, an assembled battery that is formed by arranging a plurality of cylindrical battery modules 2 into a grid of rows and columns. In a region upstream of the battery modules 2 in the most upstream row, a flow control plate 13 is provided so as to divide internal space in a battery case into a downstream side and an upstream side. The flow control plate 13 is provided with through holes 132 that connect the upstream side and the downstream side to each other. From the flow control plate 13, a plurality of partition plates 133 which reach spaces between the battery modules 2 in the most upstream row are erected between the respective battery modules 2. Each of the through holes 132 in the flow control plate 13 is eccentrically located to a one side of the battery module 2. On the one side, a gap h between each battery module 2 and an adjacent partition plate 133 is set so as to satisfy the following expression: 0.04≤h/D≤0.12, where D is a diameter of each battery module 2. |
