Hybrid working machine

摘要

Since a stand (23) including a plurality of supports (24) and a top plate (25) is built in on one side of a rear part of an upper frame (21) of an upper rotating body (2) as seen from an operator in a cabin (10), and a power storage device (17) is installed on the top plate (25) of this stand (23), the power storage device (17) is arranged at the highest position among all the devices mounted in the upper rotating body. The power storage device (17) is made up of a main body (17a) and a casing (17b), and cooled down by taking cooling air into the casing (17b).