Hybrid working machine

• US 8,662,969 B2
• Filed: 05/19/2010
• Issued: 03/04/2014
• Est. Priority Date: 05/25/2009
• Status: Active Grant

• Current Assignee: Kobelco Construction Machinery Company Limited (Kobe Steel Limited)
• Original Assignee: Kobelco Construction Machinery Company Limited (Kobe Steel Limited)
• Inventors: Shimomura, Keisuke, Yonezawa, Kouji, Okunishi, Takayuki
• Primary Examiner(s): Hu, Kang
• Assistant Examiner(s): COTOV, JONATHAN J
• Application Number:
  US12/782,977
• Publication Number:
  US 20100297926A1
• Time in Patent Office: 1,385 Days
• Field of Search: 454/158, 454/141, 180/68.5, 180/65.22
• US Class Current: 454/141
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60W 2300/17 Construction vehicles, e.g. graders, excavators
• CPC Class Codes: E02F 9/00 Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00 laying-out or take-up devices for trailing electric cables B66C
• CPC Class Codes: E02F 9/0833 Improving access, e.g. for maintenance, steps for improving driver's access, handrails
• CPC Class Codes: E02F 9/0858 Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units E02F9/16, E02F9/18 take precedence
• CPC Class Codes: E02F 9/2075 of the hybrid type for vehicles in general B60W20/00
• CPC Class Codes: E02F 9/2217 with energy recovery arrangements, e.g. using accumulators, flywheels

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.

Claims

1. A hybrid working machine, comprising:

a crawler type lower traveling body;

an upper rotating body rotatably mounted around a vertical axis which is vertical to the ground on said lower traveling body;

a working attachment provided on said upper rotating body;

hybrid devices mounted on said upper rotating body, said hybrid devices including

a power storage device serving as a power source for a generator motor for performing a generator operation and a motor operation, and

a controller for controlling charging and discharging operations for said power storage device; and

a partition plate,

wherein said power storage device and said controller each includes a main body and a casing covering said main body, said power storage device and said controller being arranged so as to overlap each other in an up and down direction, and the partition plate being placed between said respective casings of said power storage device and said controller,

wherein an intake port is provided in a first casing of said casings,

wherein an exhaust port is provided in a second casing of said casings,

wherein a ventilation port is provided in said partition plate to introduce cooling air taken from said intake port in the first casing into the second casing through said ventilation port, and to exhaust the cooling air from said exhaust port, so that said power storage device and said controller are cooled down,

wherein an uppermost casing of the first and second casings has an opening at a lower surface thereof, and a lowermost casing of the first and second casings has an opening at an upper surface thereof,

wherein a portion of the partition plate is located between the respective openings of the first and second casings, and

wherein the ventilation port is formed at a position where the openings of the first and second casings overlap each other to provide communication between the first and second casings through the ventilation port.

2. The hybrid working machine according to claim 1, wherein said power storage device is arranged on an upper side and said controller is arranged on a lower side relative to said partition plate.

3. The hybrid working machine according to claim 1, further comprising a stand including a plurality of supports and a top plate, the top plate constituting the partition plate, and the stand provided on an upper frame constituting said upper rotating body, and

wherein said power storage device and said controller are arranged with said top plate of said stand used as said partition plate.