Separators, batteries, systems, and methods for idle start stop vehicles
View Patent ↗In accordance with at least selected embodiments or aspects, the present invention is directed to improved, unique, and/or high performance ISS lead acid battery separators, such as improved ISS flooded lead acid battery separators, ISS batteries including such separators, methods of production, and/or methods of use. The preferred ISS separator may include negative cross ribs and/or PIMS minerals. In accordance with more particular embodiments or examples, a PIMS mineral (preferably fish meal, a bio-mineral) is provided as at least a partial substitution for the silica filler component in a silica filled lead acid battery separator (preferably a polyethylene/silica separator formulation). In accordance with at least selected embodiments, the present invention is directed to new or improved batteries, separators, components, and/or compositions having heavy metal removal capabilities and/or methods of manufacture and/or methods of use thereof.
1. A lead acid battery separator comprising a microporous membrane comprising polymer, oil, and a filler, said filler comprising silica and at least one phosphate induced metal stabilization (PIMS) mineral for reducing the lead concentration in the acid of the battery, the PIMS mineral comprises hydroxyapatite, the filler comprises 5-30% of hydroxyapatite, and the PIMS mineral is extruded with the polymer and the silica to polymer ratio is from 3.0/1.0 to 5.0/1.0.
2. The battery separator according to claim 1 , wherein the phosphate induced metal stabilization mineral further comprises apatite, ground fish meal, fish bone powder, zeolite, or a mixture thereof.
3. The battery separator according to claim 2 , wherein the phosphate induced metal stabilization mineral comprises fish bone powder.
4. The battery separator according to claim 3 , wherein the filler comprises 1-20% of fish bone powder.
5. The battery separator according to claim 2 , wherein the phosphate induced metal stabilization mineral comprises ground fish meal.
6. The battery separator according to claim 5 , wherein the filler comprises 5-30% of ground fish meal.
7. The battery separator according to claim 1 , wherein the polymer comprises polyethylene.
8. The battery separator according to claim 1 , wherein the silica has a surface area greater than 200 g/m 2 .
9. The battery separator according to claim 1 , wherein the battery separator is selected from the group consisting of a deep cycle separator, an ISS separator, and a micro-hybrid separator, which separator comprises at least two of the following: features that help minimize acid stratification, that occupies approximately 15% less volume than traditional separators, has negative cross ribs, has a multitude of small mini-ribs in the horizontal direction, has a mechanical barrier that will hinder an acid gradient from developing, has hundreds of mini dams to keep heavier acid from flowing downward, has hundreds of mini dams which create hundreds of mini pools of acid uniformly across the surface of the electrode, and that improves power delivery and reduces acid stratification in micro-hybrid batteries.
10. The battery separator according to claim 1 , wherein the battery separator is an ISS battery separator having multiple separator properties of improved charge acceptance, improved power delivery, reduced hydration shorts, improved cycle life, and reduced acid stratification optimized simultaneously.
11. The battery separator according to claim 1 , wherein said separator is a laminate or composite separator comprising a nonwoven layer, said nonwoven layer comprising glass fibers, polymeric fibers, or a combination thereof.