To appropriately control the rotation of a cooling fan in a charging mode, taking into account the drive state of a drive system, and obtain the effect according to the drive state of the drive system.SOLUTION: An electric construction machine comprises a drive system that drives the machine by electric power, a heat exchange device that exchanges heat of a cooling medium to cool the drive system, a cooling fan that sends air to cool the heat exchange device, and a cooling fan control unit that controls the rotation of the cooling fan according to a set operation mode. The operation modes include a drive mode in which the drive system is driven and a charging mode in which the drive of the drive system is stopped and the battery that stores electric power is charged. The cooling fan control unit sets the rotation speed of the cooling fan in the charging mode to the charging mode rotation speed corresponding to the driving state of the drive system.SELECTED DRAWING: Figure 10

    【課題】駆動システムの駆動状態を考慮して、充電モードでの冷却ファンの回転を適切に制御し、駆動システムの駆動状態に応じた効果を得る。【解決手段】電動式建設機械は、電力により機体を駆動させる駆動システムと、駆動システムを冷却するための冷却媒体の熱交換を行う熱交換装置と、熱交換装置を冷却する空気を送る冷却ファンと、設定された動作モードに応じて冷却ファンの回転を制御する冷却ファン制御部と、を備える。上記動作モードは、駆動システムを駆動する駆動モードと、駆動システムの駆動を停止させて電力を蓄電するバッテリーを充電する充電モードと、を含む。冷却ファン制御部は、充電モードにおける冷却ファンの回転数を、駆動システムの駆動状態に対応する充電モード回転数に設定する。【選択図】図10


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    Title :

    ELECTRIC CONSTRUCTION MACHINE


    Additional title:

    電動式建設機械


    Contributors:

    Publication date :

    2021-12-13


    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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