US 9,425,460 B2Granted

Fiber mat for battery plate reinforcement

AssigneeJohns Manville

InventorsZhihua Guo, Souvik Nandi, Jawed Asrar, Albert G Dietz, III

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Abstract

Embodiments of the invention provide batteries, electrodes, and methods of making the same. According to one embodiment, a battery may include a positive plate having a grid pasted with a lead oxide material, a negative plate having a grid pasted with a lead based material, a separator separating the positive plate and the negative plate, and an electrolyte. A nonwoven glass mat may be in contact with a surface of either or both the positive plate or the negative plate to reinforce the plate. The nonwoven glass mat may include a plurality of first coarse fibers having fiber diameters between about 6 μm and 11 μm and a plurality of second coarse fibers having fiber diameters between about 10 μm and 20 μm.

Claims4

Dependent claims

A method of manufacturing a plate of a lead-acid battery, the method comprising:

providing a grid of lead alloy material;
applying a paste of an active material to the grid of lead alloy material to form a battery plate or electrode;
and
applying a nonwoven fiber mat to a surface of the paste of the active material, the fibers of the nonwoven glass mat being composed entirely of a blend of coarse glass fibers having average fiber diameters of between 6 μm and 20 μm including:
a plurality of first coarse glass fibers having fiber diameters between about 6 μm and about 11 μm;
and
a plurality of second coarse glass fibers having fiber diameters between about 13 μm and about 20 μm;
wherein the nonwoven fiber mat comprises between about 25% and 75% of the first coarse glass fibers and between 25% and 75% of the second coarse glass fibers.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/800,875Filed 16 Jul 2015 · division
Priority: 31 Jul 2012
Published: US 2015/0318554 A15 Nov 2015
Granted: 23 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification40 codes

H01M 4/667
Composites: in the form of layers, e.g. coatings
B32B 5/022
Characterised by structural features of a fibrous or filamentary layer: non-woven fabric
B32B 15/02
Layered products comprising a layer of metal: layer formed of wires, e.g. mesh
B32B 15/14
Layered products comprising a layer of metal: next to a fibrous or filamentary layer

Family

Application13/562,468Parent of this division · filed 31 Jul 2012
US 2015/0318554 A1Pre-grant publication · published 5 Nov 2015
US 9,118,063 B2Parent of this division
US 2014/0038023 A1Published application
US 9,425,460 B2This patent

From the US filing history. Foreign family members aren’t listed.