| 摘要 |
<p>Disclosed is a highly safe laminate-type secondary battery, in which a separator does not disrupted when a stress in a specific direction is applied from outside and the short circuit does not occur between a positive electrode sheet and a negative electrode sheet. The laminate-type secondary battery comprises a positive electrode sheet, a negative electrode sheet, and a bag-shaped separator (26) that comprises two separators and is produced by bonding the peripheral parts of the two separators to each other. The laminate-type secondary battery has at least one bag-shaped separator (26) having an intersection angle between a machine direction (41-44) of one separator (15a) and the machine direction (61) of the other separator (15b) of 45 to 135 degrees inclusive. At least one of the positive electrode sheet and the negative electrode sheet is placed in the inside of the bag-shaped separator (26), and the other electrode sheet and the bag-type separator (26) are laminated in an alternate manner.</p> |
