| abstract |
Provided is a nonaqueous electrolyte secondary battery, comprising an electrode group including a positive electrode, a negative electrode, and a porous separator interposed between the positive electrode and the negative electrode, the pores of the porous separator being closed when heated, a nonaqueous electrolyte held by the porous separator, and a housing for accommodating the electrode group, wherein the positive electrode, the negative electrode and the separator are made integral, and the seal regions of the housing is made of a thermoplastic resin with a melting point higher than the temperature at which the pores of the separator begin to be closed. |