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Patent Searching and Data


Title:
ELECTRIC CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2021/059514
Kind Code:
A1
Abstract:
A battery pack (14) has: a plurality of battery modules (16) that each include a module body (16A) and connection terminals (16B) and constitute a battery (15) when the connection terminals (16B) are connected electrically; and a casing (27) accommodating therein the plurality of battery modules (16). The casing (27) has provided thereinside: a module body housing part (37) that houses the plurality of module bodies (16A); a rear ventilation passage (42) and a front ventilation passage (47) that form a cooling air circulation passage and that house the plurality of connection terminals (16B) in a state of being partitioned from the module body housing part (37); a rear cooling fan (46) that supplies cooling air to connection terminals (16B) housed in the rear ventilation passage (42); and a front cooling fan (51) that supplies cooling air to connection terminals (16B) housed in the front ventilation passage (47).

Inventors:
FURUKAWA YUTA (JP)
KIHARA SEIICHI (JP)
TAKAHASHI KIWAMU (JP)
Application Number:
PCT/JP2019/038304
Publication Date:
April 01, 2021
Filing Date:
September 27, 2019
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY TIERRA CO LTD (JP)
International Classes:
H01M10/6565; E02F9/00; H01M10/613; H01M10/625
Domestic Patent References:
WO2003023892A12003-03-20
Foreign References:
JP2016138403A2016-08-04
JP2011116321A2011-06-16
DE102004021280B32005-06-02
FR2778271A11999-11-05
JP2015216070A2015-12-03
Attorney, Agent or Firm:
HIROWA PATENT FIRM (JP)
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