| 摘要 |
PURPOSE: To endure against temperature of a solder reflow process by disposing a battery between a lower side battery and an upper side battery to exist a gap between a part of the batteries and a package body, and integrating the batteries therein. CONSTITUTION: Cells 20 are isolated from a surface of a header 12-at a distance d1 in combination of a lower side battery 22 and a lower side stand-off 26. Similarly, the cells 20 are isolated from the housing 30 at a distance dn in combination of an upper side battery 24 and an upper side stand-off 26. Thus, air gaps are formed between the header 12 and the cells 20 and between a housing 30 and the cells 20, giving high insulation around the cells 20. Accordingly, the cells 20 can be retained at relatively low temperature during solder reflow processing period. |
