| 摘要 |
PURPOSE:To protect a storage battery from heat generation or ignition by detecting the temperature of a unit storage battery with a thermostat and stopping current when temperature is abnormally increased. CONSTITUTION:In a unit storage battery 3 to be accommodated in an outer container 2 comprising synthetic resin cases 1a and 1b, leads 6a, 6b are extruded from a part of a sealing part 5 of cover 4 and a safety valve 7 is installed in the sealing part between leads. Leads of adjacent batteries are connected in series with a connector 8 and a thermostat 9 and leads at both ends are connected with terminals 10a, 10b and a lead wire 11. The thermostat 9 is made of bimetal and a movable contact plate and arranged in the space formed in the upper space between unit storage batteries. During charge, when heat generation occurs in the unit storage battery, the thermostatis operated to open the charging circuit before temperature is increased to dangerous range at which the cover is damaged. |
