Method for producing carbon fiber shell and thermal expansion component and shell structure thereof

The invention discloses a method for producing a carbon fiber shell. First, carbon fiber cloth is covered on the outer surface of an internal mold, then, an external mold is closed, and the carbon fiber cloth is clamped in a mold cavity between the internal mold and the external mold, wherein a slice-shaped thermal expansion component is further arranged between the carbon fiber cloth and the inner wall of the mold cavity. The thermal expansion component comprises a release liner capable of being stripped and an expansion diaphragm adhered to the surface of the release liner, and the width of the mold cavity is larger than the total thickness of the laminated carbon fiber cloth before curing and the thermal expansion component. The carbon fiber cloth is then led to be heated and cured in the mold cavity by heating. During the curing process, the expansion diaphragm is heated and expanded to provide internal pressure to enable the carbon fiber cloth to be tightly attached to the inner wall of one side of the m