SEALED BATTERY

摘要

A sealed battery 10 is provided, which has a seam 45 between a case main body 21 and a lid 22 on an outer surface 22A side of the lid 22, and in which this seam 25 is laser welded. A terminal 40 connected to an electrode assembly in the battery 10 is led to the outside from a through hole in the lid 22 and is separated from the lid outer surface 22A by an outside resin member 60. The outside resin member 60 is constituted of a resin matrix 62, which is formed of a nonaromatic resin composition, and inorganic fibers 64 present dispersed in the resin matrix 62. At least 50% by mass of the inorganic fibers 64 in the outside resin member 60 is disposed such that the fiber axial direction of the inorganic fibers 64 is parallel to the outer surface of the lid 22.

主权项

1. A sealed battery comprising:
a case main body that has an opening; an electrode assembly that is housed in the case main body; a lid that is fixed to the opening in the case main body and that has a through hole; a terminal that is electrically connected to the electrode assembly, and a portion of which passes through the through hole in the lid and is thereby exposed to the outside of the battery; and an outside resin member that is disposed on an outer surface of the lid outside the battery and that covers a circumference of the portion of the terminal exposed to the outside,wherein
the lid is fitted into the opening of the case main body such that the edge of the lid outer surface, on which the outside resin member is disposed, and the rim of the opening in the case main body are aligned to be in contact with each other and the lid is fixed to the case main body by executing laser welding on the resultant seam; the outside resin member is formed from a resin matrix formed of a nonaromatic resin composition and inorganic fibers present dispersed in the resin matrix; and at least 50% by mass of the inorganic fibers in the outside resin member is disposed such that the fiber axial direction of the inorganic fibers is parallel to the outer surface of the lid.