초록 ▼

A battery case for a battery containing swellable cellulose separators including case members having opposed undulating mating surfaces and a rim and groove sized to space the surfaces a predetermined distance apart to form a gripping channel such that the outer portion of a stack of dry separators

A battery case for a battery containing swellable cellulose separators including case members having opposed undulating mating surfaces and a rim and groove sized to space the surfaces a predetermined distance apart to form a gripping channel such that the outer portion of a stack of dry separators occupies at least 80% but no more than 98% of said channel. On injecting liquid electrolyte into the case, the separators swell and are securely gripped by said undulations and mating surface.

대표청구항 ▼

1. A battery case comprising in combination:a first hollow case member having a back wall and side walls terminating in a first peripheral edge, having a first profile; a second hollow case member having a back wall and side walls terminating in a second peripheral edge having a second profile matin

1. A battery case comprising in combination:a first hollow case member having a back wall and side walls terminating in a first peripheral edge, having a first profile; a second hollow case member having a back wall and side walls terminating in a second peripheral edge having a second profile mating with the first profile; an inner portion of the first profile containing at least two convex undulations; an opposed inner portion of the second profile containing at least 2 mating concave grooves; and means on said members for fixedly spacing the opposed portions a predetermined amount to form a separator gripping channel adapted to receive edges of swellable separators.