Title:
DUMP TRUCK AND POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/112945
Kind Code:
A1
Abstract:
The present disclosure provides a dump truck which does not require installation of a power supply device including a trolley wire on a downhill slope and is capable of using regenerative braking even when the state of charge of a power storage device is high. This dump truck 2 comprises a power reception device 21, a power storage device 22, a sensor 23, a travel motor 24, an inverter 25, a DC/DC converter 26, a resistor 27, a chopper circuit 28, and a control device 29. The control device 29 controls the DC/DC converter 26 and the chopper circuit 28 to supply regenerative power to the power storage device 22. In addition, the control device 29 controls, when the state of charge of the power storage device 22 exceeds an upper limit value, the DC/DC converter 26 and the chopper circuit 28 to supply regenerative power to the resistor 27.
Inventors:
NAKATE YOHEI (JP)
KANEZAWA HIROSHI (JP)
IKEDA JUN (JP)
KIMURA TAKUYA (JP)
KANAYA YOUSUKE (JP)
KANEZAWA HIROSHI (JP)
IKEDA JUN (JP)
KIMURA TAKUYA (JP)
KANAYA YOUSUKE (JP)
Application Number:
PCT/JP2022/045970
Publication Date:
June 22, 2023
Filing Date:
December 14, 2022
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
B60L7/22; B60L5/28; B60L9/18; B60L53/14; B60L58/13; B60M7/00; H02J7/00; H02J7/34
Foreign References:
| CN110014852A | 2019-07-16 | |||
| JPH0670409A | 1994-03-11 | |||
| JP2004289884A | 2004-10-14 | |||
| US20150090554A1 | 2015-04-02 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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