A shovel according to embodiments of the present invention includes a lower travelling body (1), an upper swivel body (3), an operation attachment, an engine (11), a motor generator (12) which is connected to the engine (11), a hydraulic pump (14) which is connected to the motor generator (12) and supplies hydraulic oil to the operation attachment, a swiveling electric motor (21) which is mounted on the upper swivel body (3), a power storage device (19), a DC bus (110) which electrically connects the power storage device (19) and the swiveling electric motor (21) to each other, and a control device (30), in which the control device (30) decreases a charging/discharging limit value of the power storage device (19) and changes a discharging requirement value which is the maximum value of power which is supplied from the power storage device (9) to the swiveling electric motor (21), according to a decrease of temperature.
EXCAVATOR
BAGGER
PELLE
2017-10-04
Patent
Elektronische Ressource
Englisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / E02F Baggern , DREDGING / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Europäisches Patentamt | 2019
|Europäisches Patentamt | 2016
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