Abstract: In a hybrid working machine including a power storage device serving as a power source for a generator motor and a controller for controlling this power storage device, the power storage device and the controller being each made up of a main body and casing covering the main body, the power storage device is arranged on the upper side of a top plate of a stand provided on an upper frame, the controller is arranged on the lower side, an intake port is provided in the casing of the power storage device, an exhaust port is provided in the casing of the controller, a ventilation port is provided in the top plate, and the cooling air is fed into the interior of the power storage device and the controller, so that the power storage device and the controller are cooled down.

Abstract: A plurality of supports and a top plate attached to between upper ends of the supports are provided, and a power storage device and a controller are installed on the both upper and lower sides of the top plate respectively. Meanwhile, a hydraulic pump and a control valve are accommodated in space for hydraulic devices on the lower side of the top plate, and a heat insulating member and heat shield plates are provided as heat shield means for protecting the power storage device and the controller against heat from the exterior including heat of the hydraulic pump and the control valve.

Abstract: A plurality of supports and a top plate attached to between upper ends of the supports are provided, and a power storage device and a controller are installed on the both upper and lower sides of the top plate respectively. Meanwhile, a hydraulic pump and a control valve are accommodated in space for hydraulic devices on the lower side of the top plate, and a heat insulating member and heat shield plates are provided as heat shield means for protecting the power storage device and the controller against heat from the exterior including heat of the hydraulic pump and the control valve.

Abstract: In a hybrid working machine including a power storage device serving as a power source for a generator motor and a controller for controlling this power storage device, the power storage device and the controller being each made up of a main body and casing covering the main body, the power storage device is arranged on the upper side of a top plate of a stand provided on an upper frame, the controller is arranged on the lower side, an intake port is provided in the casing of the power storage device, an exhaust port is provided in the casing of the controller, a ventilation port is provided in the top plate, and the cooling air is fed into the interior of the power storage device and the controller, so that the power storage device and the controller are cooled down.