COIN-SHAPED SECONDARY BATTERY

• Main Authors: MAEDA KAZUKI, URAKAWA AKIRA, YURA YUKINOBU
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

This coin-shaped secondary battery (1) for reflow-type soldering is provided with: a porous positive electrode (2); a porous negative electrode (3); a porous separator (41) disposed between the positive electrode (2) and the negative electrode (3); an electrolytic solution (42) with which the positive electrode (2), the negative electrode (3) and the separator (41) are impregnated; and an outer package (5) having an enclosed space for housing the positive electrode (2), the negative electrode (3), the separator (41), and the electrolytic solution (42). The value obtained by dividing the amount of the electrolytic solution (42) by the total volume of voids in the positive electrode (2), the negative electrode (3), and the separator (41) is 1.025-2.4. With this configuration, it is possible to realize a high-performance coin-shaped secondary battery (1) in which a decline in performance due to reflow soldering is minimized. 利用回流焊方式进行的锡焊用的纽扣型二次电池(1)具备：多孔质的正极(2)；多孔质的负极(3)；多孔质的隔板(41)，其设置于正极(2)与负极(3)之间；电解液(42)，其含浸于