| 摘要 |
The present invention suppresses the formation of layers in electrolyte and improves battery lifetime performance in a flooded-type lead acid battery that is discharged to a load in partially charged state even in the case where it is difficult to stir electrolyte due to gassing because the battery is not fully charged. On each negative plate (1), a non-woven fabric (2) composed of fibers of at least one material selected from a group of materials comprising glass, pulp and polyolefins comes into contact with the entire surface of the plate without being integrated with the plate. Each negative plate (1), which is in contact with the non-woven fabric (2), is contained in an envelope separator (3) comprising a microporous synthetic resin sheet, and is laminated with a positive plate (4). The non-woven fabric is manufactured through papermaking process in which glass fibers, pulp and silica powder are preferably used and dispersed in water as the main components. |
