| 摘要 |
PURPOSE: To suppress temperature rising caused by heat generated in charge/ discharge reaction even if battery capacity is increased by forming a pack battery. CONSTITUTION: A stacked body 14 formed by alternately stacking a plurality of positive electrodes and negative electrodes between which a separator is placed is housed in a flat, square battery case 10 to obtain a flat, square unit cell. A plurality of, for example, seven unit cells 20a, 20b,...20g are arranged so that the electrode surface in the flat, square battery case 10 is adjacent each other, and put into a pack battery case 21 to obtain a pack battery structure. A beam-shaped spacer 22 is arranged between the adjacent unit cells of the unit cells 20a, 20b,...20g, and a gap for cooling is secured by the thickness of the spacer 22. |
