Non-aqueous secondary battery, mounted unit, and method for manufacturing non-aqueous secondary battery

摘要

A non-aqueous secondary battery includes: a positive-electrode collector layer; a positive-electrode layer formed on one surface of the positive-electrode collector layer; a negative-electrode collector layer; a negative-electrode layer formed on one surface of the negative-electrode collector layer so as to be opposed to the positive-electrode layer; a separator provided between the positive-electrode layer and the negative-electrode layer; and a positive-electrode-side insulating layer and a negative-electrode-side insulating layer respectively formed on another surface of the positive-electrode collector layer and another surface of the negative-electrode collector layer. Circumferential inner surfaces of peripheral edges of the positive-electrode collector layer and the negative-electrode collector layer are joined with a sealing agent including at least a positive-electrode fusion layer, a gas barrier layer, and a negative-electrode fusion layer. The positive-electrode-side insulating layer and/or the negative-electrode-side insulating layer has a battery-side recess provided on a surface.

主权项

1. A non-aqueous secondary battery, comprising:
a positive-electrode collector layer; a positive-electrode layer formed on one surface of the positive-electrode collector layer; a negative-electrode collector layer; a negative-electrode layer formed on one surface of the negative-electrode collector layer so as to be opposed to the positive-electrode layer; a separator including an electrolytic solution provided between the positive-electrode layer and the negative-electrode layer; a positive-electrode-side insulating layer formed on another surface of the positive-electrode collector layer; and a negative-electrode-side insulating layer formed on another surface of the negative-electrode collector layer, wherein an inner surface of a peripheral edge of the positive-electrode collector layer and an inner surface of a peripheral edge of the negative-electrode collector layer are joined with a sealing agent interposed therebetween, the sealing agent comprising a multilayer structure including at least a positive-electrode fusion layer, a gas barrier layer, and a negative-electrode fusion layer, wherein the positive-electrode-side insulating layer and/or the negative-electrode-side insulating layer has a battery-side recess provided on a surface on an opposite side of a surface on which the positive-electrode collector layer and/or the negative-electrode collector layer is provided, and wherein the battery-side recess is not opened, such that the insulating layer remains on a bottom surface of the battery-side recess, and the insulating layer on the bottom surface of the battery-side recess is thinner than the insulating layer located other than on the bottom surface of the battery-side recess.