To electrically connect a connecting terminal of a service plug with a connected terminal of an outer package case in an ideal state, while connecting the service plug and the outer package case with a waterproof structure.
The battery system has a service plug 4 connected detachably to the outer package case 2 in which a plurality of batteries 1 are built. The service plug 4 has a fuse 5 equipped with a pair of connecting terminals 51 built in a plug case 40. The outer package case 2 has a plug connecting part 25 to which the plug case 40 is connected and the connected terminal 31 to which the connecting terminal 51 is connected, and connects the fuse 5 to the battery 1 through the connecting terminal 51 and the connected terminal 31 and outputs a voltage to an output terminal 7. Further, a gasket 49 is installed between the plug case 40 and the plug connecting part 25, and the service plug 4 is connected to the outer package case 2 with the waterproof structure, while the connecting terminal 51 is connected to the plug case 40 with a floating structure capable of moving in a direction to cross the insertion direction.
FUKUKAWA KOICHI
YONEYAMA SHINGO
TERADA JUNJI
NAITO SHINYA
ITAGAKI TAKAHIRO
YAMAHA MOTOR CO LTD
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Toshisu Koji