Non-aqueous electrolyte battery pack comprising a liquid-absorbent composition

A non-aqueous electrolyte battery pack, comprising a battery case and disposed within the battery case a non-aqueous electrolyte battery cell, a wiring circuit board, and an electrolyte absorption member for absorbing electrolyte in the event that electrolyte leaks from a non-aqueous electrolyte battery cell, wherein said electrolyte absorption member is formed from a liquid-absorbent composition or liquid absorbent sheet, comprising:

• a supporting substrate and formed on one side thereof a liquid-absorbent crosslinked resin layer, wherein the liquid-absorbent crosslinked resin layer comprises a methyl vinyl ether/maleic anhydride copolymer crosslinked with a polyfunctional isocyanate compound.

A method for manufacturing a non-aqueous electrolyte battery pack, comprising:

• forming a liquid-absorbent crosslinked resin by dissolving a solution consisting of a methyl vinyl ether/maleic anhydride copolymer in an amount of 3 to 35 wt % in a solvent with a solubility parameter (SP) value of 9 to 14, and adding a polyfunctional isocyanate compound to this solution to perform a crosslinking reaction, forming a liquid-absorbent composition comprising a powder of the liquid-absorbent crosslinked resin and a binder resin, forming an electrolyte absorption member from the liquid-absorbent composition, and disposing a non-aqueous electrolyte battery cell, a wiring circuit board, and the electrolyte absorption member for absorbing electrolyte in the event that electrolyte leaks from a non-aqueous electrolyte battery cell, within a battery case.