| 摘要 |
PROBLEM TO BE SOLVED: To restrain variation of temperatures of a group of batteries parallely connected to each other.SOLUTION: The power storage device comprises a power storage element group with plural cylindrical power storage elements, and a case for housing the power storage element group. The power storage element group is housed in the case so that a length direction of the power storage element is an upward and downward direction of the case. The power storage element is parallely connected to every line of the plural power storage elements aligned in a direction almost vertical to a cooling path distributing in a rightward and leftward direction of the case and orthogonal to the upward and downward direction and the rightward and leftward direction. The power storage elements parallely connected to each other can be respectively and uniformly cooled, and the length direction of the power storage element is the upward and downward direction of the case. Therefore, influences of the temperatures of the other power storage element can be restrained between the adjacent power storage elements parallely connected to each other, so as to restrain variation of the temperatures of the parallely connected power storage elements. |
