| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To effectively prevent degradation of battery performance caused by a temperature difference by reducing the temperature difference among a plurality of power supply modules having an extremely simple structure and housed in a holder case. <P>SOLUTION: This power supply device is composed by housing a plurality of power supply modules 1 in a holder case 2 in an arrangement for vertically stacking them in multiple tiers. The holder case 2 has a stacking structure of a plurality of case units 2A formed by stacking the plurality of case units 2A in multiple tiers. Each case unit 2A is molded with a molding material. In the holder case 2, the thermal conductivity of the molding material used for molding the upper-tier case units 2A stacked in the upper tiers is set larger than that of the lower-tier case units 2A stacked in the lower tiers than the upper-tier case units 2A, so that heat conduction of the upper-tier case units 2A is increased as compared with that of the lower-tier case units 2A to efficiently cool the power supply device. <P>COPYRIGHT: (C)2004,JPO</p> |
