Flat-pack battery separator
AssigneeThe Kendall Company
InventorsPhoenix Nathan Dangel, Preston Fairfax Marshall
Life of this patent
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Abstract
A novel battery separator for a flat-pack or planar battery is disclosed wherein a nonwoven fabric is disposed on and across a plastic frame or grid, the outer edges of the fabric being disposed on said plastic frame are of extremely low fiber density and being oriented predominantly in a direction normal to each side of the frames so as to facilitate the more complete thermal pressurized bonding of a stack of separators and similarly electrodes by a sealing of the outer edges of the respective plastic frames. A more complete seal is thus formed insuring against the leaking or escaping of the liquid electrolyte contained therein.
Claims8
A battery separator for planar batteries comprising:
- a generally rectangular supporting grid of a hot melt material, said grid having a generally rectangular opening therein;
- a nonwoven fabric disposed across said grid and said opening, a majority of the fibers in said fabric are located within said opening, said fibers disposed therein that are directly adjacent said grid are oriented in a direction substantially parallel to said axis of said adjacent grid, the remaining fibers in said opening are in substantially random orientation, a minority of said fibers in said fabric being disposed on said grid and being oriented thereon in a direction substantially normal to the axis of said grid.
In a planar battery having, in staked relationship, a planar anode, a planar cathode, a planar separator disposed between said anode and cathode, a liquid electrolyte in contact with said anode, cathode and separator, the improvement comprising a planar separator comprising a generally rectangular supporting grid of a hot melt material, said grid having a generally rectangular opening therein;
- a nonwoven fabric disposed across said grid and said opening, a majority of the fibers in said fabric are located within said opening, said fibers disposed therein that are directly adjacent said grid are oriented in a direction substantially parallel to said axis of said grid, the remaining fibers in said opening are in substantially random orientation, a minority of said fibers in said fabric being disposed on said grid and being oriented thereon in a direction substantially normal to the axis of said grid.
Dependencies are inferred from the claim text.