| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce a difference in temperature among batteries by ideally thermal-coupling a radiation plate with a surface of a cylindrical battery, and to effectively prevent a short-circuit of the battery by the radiation plate to increase safety even in a structure with the cylindrical batteries disposed in multiple stages and multiple columns. <P>SOLUTION: A battery pack includes a battery block 10 configured by setting a plurality of chargeable cylindrical batteries 1A into an insertion section 21 in a battery holder 2 to be arranged in multiple stages and multiple columns. In the battery pack, the radiation plate 8 which is thermal-coupled with the surface of the cylindrical battery 1A is connected with the battery holder 2. The radiation plate 8 is a metal plate shaped into a corrugated form and U-grooves 8A, into which the cylindrical batteries 1A are fitted are formed alternatingly in its opposite surfaces. In the battery pack, disposed adjacent cylindrical batteries 1A are fit alternating in the U-grooves 8A formed in the both surfaces of the radiation plate 8 constituted of the corrugated metal plate to thermal-couple outer peripheral surfaces of the cylindrical batteries 1A with inner surfaces of the U-grooves 8A. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
