BATTERY CASE AND BATTERY

摘要

A battery case including a cylindraceous body (1), a top lid plate (3) and a bottom lid plate (4), the top of the cylindraceous body (1) being open, the top lid plate (3) being fixed to the open of the top of the cylindraceous body (1) so as to cover the open, the said cylindraceous body (1) having a bottom which has a supporting table-board (8) having a open (2), the said bottom lid plate (4) being covered at the open (2) of the said supporting table-board (8). Further, the said open (2) is steppd or cone-shaped. Furthermore the bottom surface around the said open (2) is provided a first recess (12), a second recess (13) is provided on the outside surface of the said bottom lid (4) near the said open (2) at the bottom of the said cylindraceous body. Also a battery made of the said case is disclosed.