Title:
An electric power unit of cargo work vehicles
Document Type and Number:
Japanese Patent JP6049440
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a power unit for a cargo handling vehicle in which power is supplied to a load from a lead battery and a lithium battery simultaneously, and when a power-supply connector of the lead battery is drawn out to disconnect the lead battery from a power supply circuit to the load, power supply to the load can be stopped urgently with certainty.SOLUTION: A power unit for a cargo handling vehicle includes a lead battery 11, a lithium battery 12, and a battery connector 61 for disconnecting the lead battery 11 mechanically from a power line 30 of +72 V (power supply line for an inverter 14). When the lead battery 11 is disconnected mechanically from the power line 30 of +72 V by the battery connector 61, a main controller detects the disconnection, opens a conductor BC, disconnects the lithium battery 12 from the power line 30 of +72 V and blocks power supply (electric power) to the inverter 14 (running motor 13) perfectly. Thus, a power source of a battery forklift can be blocked perfectly and the battery forklift can be stopped urgently with certainty.
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Inventors:
Mitsuru Kobayashi
Akashi Takuya
Yuichi Yanagi
Akashi Takuya
Yuichi Yanagi
Application Number:
JP2012280422A
Publication Date:
December 21, 2016
Filing Date:
December 25, 2012
Export Citation:
Assignee:
Uni Carrier Co., Ltd.
International Classes:
B66F9/24; B60L11/18; H02J7/00
Domestic Patent References:
| JP2002173299A | ||||
| JP2014007871A | ||||
| JP2012228051A |
Attorney, Agent or Firm:
Morimoto International Patent Office
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