Battery cell liquid injection pretreatment vacuum device

The utility model relates to the technical field of battery cell processing, in particular to a battery cell liquid injection pretreatment vacuum device which comprises a liftable vacuum frame and further comprises a pressing plate located above the vacuum frame, four guide rods are arranged between the pressing plate and the vacuum frame, a telescopic assembly is installed at the top of the pressing plate and comprises a telescopic driving rod which penetrates through the pressing plate and vertically extends downwards, and the telescopic driving rod is connected with the guide rods. A guide seat connected with the telescopic driving rod is mounted on the vacuum frame, and a vacuum pipe joint is further arranged at the top of the vacuum frame; a battery bag needing to be filled with liquid is positioned by the positioning mechanism, the pressing plate is fixed, the telescopic driving rod drives the vacuum frame connected with the guide seat to move, the vacuum frame is vertically pressed downwards along the