Lockable insulation sheet for lithium battery

The utility model discloses a lockable insulating strip for a lithium battery, which relates to the technical field of insulating strips, and comprises a self-locking mounting insulating strip, and the inner side of the self-locking mounting insulating strip is provided with a butt joint external notch; an external auxiliary groove is formed in the outer side of the self-locking mounting insulation sheet, and the inner wall of the external auxiliary groove is in threaded connection with an adjustable built-in rotating guide ring; the inner side of the self-locking mounting insulation sheet is provided with a built-in sliding guide groove communicated with the butt joint external notch, and at the moment, the built-in sliding guide plate slides out of the inner wall of the built-in sliding guide groove to be in butt joint fit with a lithium battery groove in the lithium battery body; in this way, the convenience of butt joint and matching between the self-locking mounting insulation sheet and the lithium batte