To provide an electrically-driven construction machine that enables electrical equipment including an electric motor, an inverter, and a charger to be cooled according to its operation mode, allowing for improved cooling efficiency of the electrical equipment, reduction in necessary cost for cooling equipment, and the like.SOLUTION: A cooling pipe line 18 is provided with: a motor side pipe line 21 connecting a radiator 16, an electric motor 10, and an inverter 13; and a charger side pipe line 22 connecting the radiator 16 and a charger 14. The cooling pipe line 18 is provided with a motor side changeover valve 25 and a charger side changeover valve 26 for switching a supply destination of cooling water cooled by the radiator 16 to one or both of the motor side pipe line 21 and the charger side pipe line 22. Further, a controller 27 is provided to control the motor side changeover valve 25 and the charger side changeover valve 26 depending on the operation mode: a charging mode, an internal power mode, or an external power mode.SELECTED DRAWING: Figure 2

    【課題】 モードに応じて電動モータとインバータと充電器を含む電装機器を冷却できるようにし、電装機器の冷却効率の向上、冷却設備に要するコストの削減等を図る。【解決手段】 冷却管路18は、ラジエータ16と電動モータ10、インバータ13とを接続したモータ側管路21と、ラジエータ16と充電器14とを接続した充電器側管路22と、を備えている。冷却管路18には、ラジエータ16で冷却された冷却水の供給先をモータ側管路21と充電器側管路22の一方または両方に切換えるモータ側切換弁25、充電器側切換弁26が設けられている。さらに、充電モード、内部電力モード、外部電力モードと、のいずれかのモードに応じてモータ側切換弁25、充電器側切換弁26を制御するコントローラ27が設けられている。【選択図】 図2


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    Title :

    ELECTRICALLY-DRIVEN CONSTRUCTION MACHINE


    Additional title:

    電動式建設機械


    Contributors:

    Publication date :

    2023-05-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E02F Baggern , DREDGING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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