Battery cell fabrication process
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Aug 15, 2002
app pub date -
Dec 20, 2000
filing date -
Dec 20, 2000
priority date (Note) -
Abandoned
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Abstract
Provided are alternative fabrication methods and compositions for an electrochemical cell. The methods of the present invention are applicable to the manufacture of polymer-cased lithium-ion secondary battery cells. They are particularly, but not exclusively, applicable to manufacturing scale processes of fabricating polymer-cased lithium-ion secondary battery cells. Briefly, the present invention provides an electrochemical cell fabrication process wherein a binder is applied to a porous battery separator material. Binder solutions in accordance with the present invention, are formulated with a low boiling/high solubility ('good') solvent and a higher boiling/no or low solubility ('bad') solvent to dissolve the binder and coat it on the separator. When the separator is subsequently dried by evaporation of the solvents, a porous coating of binder is formed on the separator material.
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