MAT MADE OF COMBINATION OF COARSE GLASS FIBERS AND MICRO GLASS FIBERS USED AS A SEPARATOR IN A LEAD-ACID BATTERY

摘要

Embodiments of the invention provide battery separators including reinforcing fibers and methods for making the same. According to one embodiment, a battery separator may include a plurality of first fibers blended with a plurality of second fibers. The plurality of first fibers may include fibers having a fiber diameter of between about 0.05 and 5 microns and the plurality of second fibers may include fibers having a fiber diameter of between about 8 and 20 microns. The first fibers may allow the battery separator to absorb an electrolyte of the battery while the second fibers reinforce the battery separator. An acid resistant binder may bond the first and second fibers. In some embodiments, the second fibers may be arranged with respect to the first fibers so as to form a plurality of fiber strands that are disposed on one or more surfaces of the mat composed of the first fibers.

主权项

1. A separator for a lead-acid battery comprising:
a nonwoven fiber mat positionable between electrodes of a battery to electrically insulate the electrodes, the nonwoven fiber mat comprising:
a plurality of entangled fine fibers, the plurality of entangled fine fibers comprising fibers having a fiber diameter of between about 0.05 and 5 microns;a plurality of coarse fibers blended with the plurality of entangled fine fibers, the plurality of coarse fibers comprising fibers having a fiber diameter of between about 8 and 20 microns; andan acid resistant binder that couples the plurality of entangled fine fibers with the plurality of coarse fibers to form the nonwoven fiber mat; wherein the nonwoven fiber mat comprises 60 percent or more of the fine fibers, 40 percent or less of the coarse fibers, and 0.5 to 15% of the acid resistant binder.