| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress generation of fastening looseness even when the battery cell is expanded. <P>SOLUTION: A power supply device has: a battery lamination body 5 configured by laminating a plurality of square battery cells 1; a pair of end plates 3 arranged at end surfaces in a lamination direction of the battery lamination body 5; and a plurality of metal bind bars 4 for fastening the end plates 3 at the end surfaces of the battery lamination body 5. Each bind bar 4 has bent pieces 4a obtained by respectively bending both end parts in a first direction. Each bent piece 4a is provided with engaged pieces 4f protruding in a second direction reverse to the first direction. Each end plate 3 opens slits 7 into which the bent pieces 4a provided with the engaged pieces 4f can be inserted. Each slit 7 opens engaging holes that can engage with the engaged pieces 4f on an inner surface on a far side from the battery lamination body 5 among its inner surfaces. The bent pieces 4a are inserted into the slits 7, and the engaged pieces 4f are engaged with the engaging holes to fasten the battery lamination body 5 by the bind bars 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
