Tubular gauntlets for deep cycle lead-acid batteries
AssigneeJohns Manville
InventorsZhihua Guo, Rui Ferreira
Life of this patent
Estimating the term…
Abstract
A battery cell, comprising a wet-laid nonwoven gauntlet defining a chamber, a plurality of polymeric fibers, a binder, and a positive active material housed in the chamber. The plurality of polymeric fibers have a linear mass density of between about 0.5 denier and 13.0 denier, and a length of between about 5 mm and 50 mm. The binder has a binder add-on percentage of between about 5% and 30%. The wet-laid nonwoven gauntlet has a basis weight with a coefficient of variation between about 1% and 5%.
Claims20
A battery cell, comprising:
- a wet-laid nonwoven gauntlet defining a chamber, wherein the wet-laid nonwoven gauntlet comprises:
- a plurality of polymeric fibers, wherein:
- the plurality of polymeric fibers have a linear mass density of between about 0.5 denier and 13.0 denier;
- the plurality of polymeric fibers have a length of between about 5 mm and 50 mm;
- and
- a binder, wherein:
- the binder has a binder add-on percentage of between about 5% and 30%;
- and
- the wet-laid nonwoven gauntlet has a basis weight with a coefficient of variation between about 1% and 5%;
- and
- a positive active material housed in the chamber.
A method of manufacturing a battery cell, comprising:
- forming a wet-laid nonwoven gauntlet defining a chamber, wherein the wet-laid nonwoven gauntlet comprises:
- a plurality of polymeric fibers, wherein:
- the plurality of polymeric fibers have a linear mass density of between about 0.5 denier and 13.0 denier;
- the plurality of polymeric fibers have a length between about 5 mm and 50 mm;
- and
- a binder, wherein:
- the binder has a binder add-on percentage of between about 5% and 30%;
- and
- the wet-laid nonwoven gauntlet has a basis weight with a coefficient of variation between about 1% and 5%;
- and
- inserting a positive active material in the chamber.
The method of claim 14, wherein the binder comprises one or both of an acrylic-based binder and a styrene butadiene-based binder.
A mat, comprising:
- a plurality of polymeric fibers, wherein:
- the plurality of polymeric fibers have a linear mass density of between about 0.5 denier and 13.0 denier;
- the plurality of polymeric fibers have a length of between about 5 mm and 50 mm;
- and
- a binder, wherein:
- the binder has a binder add-on percentage of between about 5% and 30%;
- and
- the mat has a basis weight with a coefficient of variation between about 1% and 5%.
Dependencies are inferred from the claim text.