| 摘要 |
<p>PURPOSE:To maintain the battery characteristics and prolong the lifetime by accommodating a plurality of unit cells in a battery case, reserving spaces between the oversurfaces and bottom surfaces of accommodated unit cells and an electric case, and thereby providing good ventilation for inside case and equalizing the temps. of the unit cells. CONSTITUTION:A battery 1 is accommodated in an upper battery case 9 and a lower battery case 10, and ring spacers 11 are fitted in the bottom bores of these cases 9, 10, and on each of their oversurfaces a plate 13 provided with a number of vents 12 is placed. Thus a space is provided at the inner bottom of the battery cases 9, 10, and upper and lower electric cases are connected through vents 15 provided at the bottom of the upper battery case 9 and a press plate 16', which presses the lower cells from above and has vents. Another press plate 16 of the upper battery case 9 has also a number of vents to provide communication with the atmosphere through a top draft hole 18 furnished in a battery case lid 17. Space 14' is in communication with the atmosphere via a bottom draft hole 20 in bottom surface of the lower battery case 10.</p> |
