Explosion-proof device of lithium battery and lithium battery with explosion-proof device

The utility model relates to the technical field of lithium battery installation. The utility model discloses an explosion-proof device of a lithium battery and the lithium battery with the explosion-proof device. The lithium battery pack comprises a lithium battery pack and a mounting shell, wherein the lithium battery combination bag is mounted in the mounting shell; the side wall of the inner cavity of the groove is movably connected with an arc-shaped heated sheet through a rolling shaft; the mounting shell is provided with a pressure relief mechanism on the right side of the arc-shaped heated sheet; the pressure relief mechanism comprises a pressure relief pipe, a sealing plate, a convex column and a movable circular ring; according to the utility model, the independent pressure relief mechanism is mounted in the modular mounting shell; the work of automatic pressure relief in the lithium battery mounting shell can be realized at high temperature and high pressure; under normal conditions, the air tightn