The present invention relates to a power supply apparatus for an electric excavator. The power supply apparatus for an electric excavator includes: a power supply part supplying power from a battery to an electric motor part; a first charging port connected with the power supply part, and supplying first external power to the battery; an OBC connected with the power supply part, and converting AC power into DC power when the AC power is inputted; and a second charging port connected with the OBC, and supplying second external power to the OBC. The power supply part supplies the charging power of the OBC or the charging power of the OBC and the battery power to the electric motor part, based on a demanded power amount for the electric motor part and a charging power amount for the OBC. Therefore, the present invention is capable of improving the efficiency of battery use.

    본 발명은 전기굴삭기의 전력공급장치에 관한 것이고, 전기굴삭기의 전력공급장치는 배터리의 전력을 전동기부에 공급하는 전력공급부; 상기 전력공급부와 연결되고, 제1 외부전원을 상기 배터리로 공급하는 제1 충전포트; 상기 전력공급부와 연결되고, 교류전원이 입력되면 직류로 변환하는 OBC; 및 상기 OBC와 연결되고, 제2 외부전원을 상기 OBC에 공급하는 제2 충전포트를 포함하고, 상기 전력공급부는 상기 전동기부의 요구전력량과 상기 OBC의 충전 전력량에 기초하여, 상기 OBC의 충전 전력 또는 상기 OBC의 충전 전력와 상기 배터리 전력을 상기 전동기부에 공급한다.


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    Title :

    Apparatus for supplying power for electricity construction heavy equipments


    Additional title:

    전기굴삭기의 전력공급장치


    Contributors:
    SEO HYUNJAE (author)

    Publication date :

    2021-03-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    E02F Baggern , DREDGING / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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