| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device in which variation of temperature, depending on the place of an electrode assembly, can be reduced by suppressing temperature in the central region of the electrode assembly.SOLUTION: A secondary battery 10 has a heat dissipation member 30 arranged between the layers of an electrode assembly 14, while coupled thermally therewith, and also coupled thermally with the case body 12. The heat dissipation member 30 includes a heat conduction part 33 overlapping the central region of the electrode assembly 14 in the lamination direction, and coupled thermally therewith. Heat transfer from the electrode assembly 14 to the heat conduction part 33 is set higher than that from the electrode assembly 14 to the periphery 34 of the heat conduction part.SELECTED DRAWING: Figure 6 |
