HYBRID WORKING MACHINE

• US 20100294577A1
• Filed: 05/19/2010
• Published: 11/25/2010
• 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: Nishimura, Koichi, Katsuhara, Shinji, Shimomura, Keisuke
• Granted Patent: US 8,616,322 B2
• Time in Patent Office: Days
• US Class Current: 180/65.1
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• 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: B60K 2001/005 the electric storage means
• CPC Class Codes: B60Y 2200/41 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

Abstract

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

Claims

1. A hybrid working machine, comprising:

a lower traveling body;

an upper rotating body rotatably mounted on said lower traveling body;

a working attachment provided on said upper rotating body;

a cabin installed on one side of a front part of said upper rotating body where said working attachment is provided; and

a power storage device serving as a power source for a generator motor mounted on said upper rotating body for performing a generator operation and a motor operation, said power storage device being installed on the other side of a rear part of an upper frame of said upper rotating body as seen from an operator in said cabin in a state that said power storage device is placed at the highest position among all the devices mounted on said upper rotating body.

2. The hybrid working machine according to claim 1, wherein

said power storage device is formed by accommodating a main body of said power storage device in a casing of said power storage device, and

cooling air is introduced into said casing, brought into direct contact with said main body of said power storage device, and exhausted to the exterior of said casing after cooling.

3. The hybrid working machine according to claim 2, wherein

a heat insulating layer for protecting said main body of said power storage device against solar heat is provided on the inner side of an upper surface of said casing of said power storage device.

4. The hybrid working machine according to claim 3, wherein

as said heat insulating layer, the upper surface of said casing is formed into a double wall structure including outer and inner plates so as to form an air layer, and

an escape hole for releasing heat in said air layer to the exterior of said casing is provided on a peripheral surface of said casing.

5. The hybrid working machine according to claim 1, wherein

a stand including a plurality of supports and a top plate extended over upper ends of said supports is built into said upper frame, and

said power storage device is installed on said top plate of said stand.