Coolant Drain Mechanism of Casing, Electric Storage Device and Construction Machine

Patent metadata

Field	Value
Publication number	US-2016353609-A1
Application number	US-201514770982-A
Country	US
Kind code	A1
Filing date	Mar 30, 2015
Priority date	Mar 30, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A coolant drain mechanism of a casing for draining a coolant from an inside of a cooling channel is provided to a bottom of a casing housing a body to be cooled. A partitioning wall for partitioning the cooling channel into at least a pair of a first channel and a second channel, a drain port opened to both of the first channel and the second channel across the partitioning wall, and a drain stopper attachable to the drain port to seal the drain port are provided to the bottom. A portion of the drain stopper exposed into the cooling channel restrains a flow between the channels at a position where the drain port is in communication with the first channel and the second channel.

First claim

1 . A coolant drain mechanism of a casing, comprising:
a cooling channel provided to a bottom of the casing in which a body to be cooled is housed, a coolant being drained from the cooling channel; a partitioning wall provided on the bottom, the partitioning wall partitioning the cooling channel into at least a pair of a first channel and a second channel; a drain port provided on the bottom, the drain port being opened to both of the first channel and the second channel across the partitioning wall; and a drain stopper being attachable to the drain port to seal the drain port, wherein a part of the drain stopper is exposed in the cooling channel, the part of the drain stopper restraining a flow of the coolant between the first channel and the second channel at a position where the drain port is in communication with the first channel and the second channel.

2 . The coolant drain mechanism of the casing according to claim 1 , further comprising:
a guide portion is provided to a portion of the partitioning wall corresponding to the drain port, a thickness of the guide portion being reduced toward a draining direction of the coolant.

3 . The coolant drain mechanism of the casing according to claim 1 , further comprising:
a bypass plug independent of the partitioning wall, the bypass plug defining a part of the partitioning wall corresponding to the drain port, wherein the partitioning wall is provided with a cut where the bypass plug is to be attached.

4 . The coolant drain mechanism of the casing according to claim 3 , wherein
the cooling channel includes a groove-shaped portion provided to the bottom of the casing and a channel cover covering the groove-shaped portion to define a flow space for the coolant, and an end of the bypass plug opposite the drain port is held by the channel cover.

5 . The coolant drain mechanism of the casing according to claim 3 , wherein:
the bypass plug is made of an elastic material.

6 . An electric storage device comprising a casing employing the coolant drain mechanism according to claim 1 .

7 . A construction machine comprising the electric storage device according to claim 6 .

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Kakizaki Takahiro
• Konishi Masayuki

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H05K7/20272 Primary

  Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds · CPC title

• H01G2/08

  Cooling arrangements; Heating arrangements; Ventilating arrangements · CPC title

• E02F9/0858 Primary

  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 title

• Y02E60/13

  Energy storage using capacitors · CPC title