The invention discloses a conductive mechanism, comprising a clamping piece, a spring, an insulating part a conductive part, wherein the spring is fixedly connected with the clamping piece, a cavity is formed in the insulating part, the conductive part is accommodated in the cavity of the insulating part and is partially outside the insulating part; the insulating part is slidingly sleeved on theclamping piece; and the spring is accommodated in the cavity of the insulating piece and is supported against between the conductive part and the clamping part. The conductive part and the spring arewell insulated from the inner wall of a cell accommodating part by using the insulating part of the conductive mechanism so as to avoid the short circuit of the cell. In addition, the spring can slide along the inner wall of the cavity of the insulating part so that the spring is not easy to deviate due to elastic deformation and is stably supported against the conductive part.