The present invention relates to a method of manufacturing a lower case of an electric vehicle battery case. At this time, the method of manufacturing the lower case of the electric vehicle battery case includes an outer panel forming step (S10), an inner panel forming step (S20), an assembly step (S30), and a roll hemming joining step (S40). Since an expansion flange formed at an edge of an outer panel is folded without welding and bound to a binding flange of an inner panel using a roller load, high confidentiality and productivity of a binding part can be secured at the same time, and the quality of a product can be maintained uniformly and precisely by forming the same through plastic processing using roll hemming.

    본 발명은 전기자동차 배터리케이스의 로워케이스 제조방법에 관련되며, 이때 전기자동차 배터리케이스의 로워케이스 제조방법은 아우터판넬 가장자리부에 형성되는 확장플랜지를 무용접방식으로 접어서 롤러 하중으로 이너판넬의 결속플랜지와 결속하므로, 결속부분의 높은 기밀성과 생산성을 동시에 확보할 수 있고, 롤헤밍에 의한 소성가공을 통해 성형하는 방식으로 제품의 품질을 균일하고 정밀하게 유지할 수 있도록 아우터판넬 형성단계(S10), 이너판넬 형성단계(S20), 조립단계(S30), 롤헤밍접합단계(S40)를 포함하여 주요구성으로 한다.


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    Title :

    Manufacturing method of lower case of electric vehicle battery case


    Additional title:

    전기자동차 배터리케이스의 로워케이스 제조방법


    Contributors:

    Publication date :

    2023-10-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY




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