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ELECTRIC WORKING MACHINE
An electric working machine includes an electric motor to use electric power received from a battery via an inverter to drive a hydraulic pump to deliver hydraulic fluid to actuate a hydraulic device. A controller to control driving of the inverter and the electric motor is configured or programmed to gradually increase a rotation speed of the electric motor such that the rotation speed of the electric motor reaches a target rotation speed in a longer time when the electric motor is started in a state in which a temperature of hydraulic fluid detected by a fluid temperature detector is lower than or equal to a predetermined temperature than when the electric motor is started in a state in which the temperature of hydraulic fluid is higher than the predetermined temperature.
ELECTRIC WORKING MACHINE
An electric working machine includes an electric motor to use electric power received from a battery via an inverter to drive a hydraulic pump to deliver hydraulic fluid to actuate a hydraulic device. A controller to control driving of the inverter and the electric motor is configured or programmed to gradually increase a rotation speed of the electric motor such that the rotation speed of the electric motor reaches a target rotation speed in a longer time when the electric motor is started in a state in which a temperature of hydraulic fluid detected by a fluid temperature detector is lower than or equal to a predetermined temperature than when the electric motor is started in a state in which the temperature of hydraulic fluid is higher than the predetermined temperature.
ELECTRIC WORKING MACHINE
SAI TAKUMA (author) / MATSUI KIYOSHI (author) / ITO JUNKI (author)
2025-01-09
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
/
B60L
PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
,
Antrieb von elektrisch angetriebenen Fahrzeugen
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
/
H02P
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS
,
Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern
ELECTRIC WORKING MACHINE AND METHOD FOR CONTROLLING ELECTRIC WORKING MACHINE
| European Patent Office | 2024