Battery cell envelope structure, battery cell and battery

The utility model discloses a cell enveloping structure, cell and battery, the cell enveloping structure comprises an outer enveloping frame and an inner enveloping frame, the outer enveloping frame is lapped on the inner enveloping frame to form an accommodating space for placing a positive and negative pole stacking material; a connecting hole is formed in the lap joint position of the outer enveloping frame and the inner enveloping frame and is communicated with the accommodating space, so that the positive and negative electrode stacking material can be communicated with an external conductive structure. According to the battery cell enveloping structure, the positive and negative electrode stacking materials are assembled between the outer enveloping frame and the inner enveloping frame, so that the mechanical strength of the battery cell can be enhanced, and meanwhile, the battery cell containing the positive and negative electrode stacking materials can be packaged into a module, so that the battery ce