Lithium battery sealing performance pre-detection device

The utility model discloses a lithium battery sealing performance pre-detection device which comprises a preset module and a pre-detection module. The preset module comprises a first mounting part and a placing part, the placing part is provided with a placing groove, the inner groove wall of the bottom of the placing groove is provided with a first air cavity groove, and the first air cavity groove is internally communicated with an inflation assembly; the pre-detection module comprises a second mounting piece and a pressing piece, a vertical driving device used for driving the pressing piece is arranged on the second mounting piece, the pressing piece and the placing piece correspond to each other up and down and are buckled with each other, and a second air cavity groove corresponding to the first air cavity groove is formed in the bottom surface of the pressing piece; a partition plate is arranged at the position, corresponding to the position between the pole and the anti-explosion valve, of the inner gr