| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack in which variation of temperature between unit cells in a battery pack of group of batteries is reduced in the battery pack. SOLUTION: The battery pack comprises a group of batteries 1 in which a plurality of unit cells 10 are laminated in perpendicular direction, a case 2 housing the group of batteries, a lid member 5 installed at the upper part of the case 2, a bottom member 6 installed at the lower part of the case 2, a tray 1a which mounts the unit cell 10 and is installed between each unit cells 10, a tray 1b which is installed between the lid member 5 and the uppermost part unit cell 10 laminated and between a bottom member 6 and the lowermost part unit cell 10 laminated, a positive electrode terminal 4a and a negative electrode terminal 4b of the group of batteries 1 which connect the unit cells 10 in parallel or in series and are connected to the outside of the case 2, and a fixing means 2a which presses the group of batteries and fixes the lid member 5 to the case 2 at a position of pressure established beforehand. COPYRIGHT: (C)2007,JPO&INPIT |
