BATTERY

摘要

A battery having an exterior body defining a housing space which houses a battery element. The housing space is tapered in shape such that the plane area gradually becomes smaller from an opening toward the inside. A dimension of a top surface located innermost from the opening of the housing space is made equal to a smallest dimension among the positive electrode members, negative electrode members, and separators constituting the battery element. A dimension of the opening of the housing space is made equal to a largest dimension among the positive electrode members, negative electrode members, and separators constituting the battery element.

主权项

1. A battery including:
a battery element comprising a laminate including a positive electrode member and a negative electrode member opposed to each other with a separator interposed therebetween, and an electrolyte; an exterior body defining a housing space that contains the battery element therein; and a positive electrode lead terminal electrically connected to the positive electrode member and a negative electrode lead terminal electrically connected to the negative electrode member, the positive and negative electrode lead terminals extending outward from the exterior body, wherein the housing space is tapered such that a plane area becomes smaller from an opening of the housing space toward an inside of the housing space, a top surface of the housing space located innermost from the opening, in a planar view thereof, has a first dimension equal to a second dimension of a smallest dimension in the same direction among the positive electrode member, the negative electrode member, and the separator; and the opening of the housing space in the planar view has a third dimension equal to a fourth dimension of a largest dimension in the same direction among the positive electrode member, the negative electrode member, and the separator.