Patent ID: 11862769
Assignee: DARAMIC, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A separator for use in a battery for an electric rickshaw comprising:
a porous membrane comprising polyolefin, filler, and a plasticizer; from about 4.0-10.0 g/m2 of one or more additives selected from the group consisting of polysaccharides, organosilicone based surfactants, quarternary amines, polyethoxylated alcohol, ethylene vinyl acetate terpolymers, ethoxylated alkyl aryl phosphate esters, and sucrose esters of fatty acid; cross ribs having a height from about 0.075-0.15 mm;
longitudinal ribs having a height from about 0.075-0.15 mm; and a back-web thickness of 0.20-0.35 mm; and
a fibrous layer on at least one face of the porous membrane, the fibrous layer is from about 0.75-1.25 mm thick,
the separator having a total thickness of about 0.425-3.0 mm, the separator or membrane being an envelope having one or more slits along and parallel to a bottom fold of the envelope.