| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently discharge gas generated inside a battery to an outside of a vehicle body in a power source unit for an electric working vehicle including a sealed type battery. <P>SOLUTION: A power source unit supplies an electric motor 18 of an electric shovel with power for driving. The power source unit comprises: a plurality of sealed type batteries 24; communication hoses 96; and a drain hose 97. The plurality of the sealed type batteries 24 are arranged in rows sideways and respectively have a pair of discharge ports 24a, to discharge internal gas, arranged along both arrangement directions of the rows. The communication hose 96 connects the discharge ports 24a of neighboring batteries 24. The drain hose 97 is connected to one of the discharge ports 24a of the battery arranged at least one edge portion of the row of the plurality of the batteries 24 and discharges the gas, which is carried away from each battery 24 through the communication hoses 96, to an outside. <P>COPYRIGHT: (C)2013,JPO&INPIT |
