Lithium battery core and shell structure

A lithium battery core and shell structure comprises a shell body, a first terminal component and a second terminal component are respectively connected above a cover plate of the shell body, an anode tab and a cathode tab are respectively connected below the cover plate of the shell body. The anode tab is electrically connected to the first terminal component; an end of the cathode tab is electrically connected to the second terminal component, while another end of the cathode tab is extended downward and bent to form a coupling portion; and an insulating element is disposed between the coupling portion and the anode tab, so as to prevent short circuit because of contact between the anode tab and the cathode tab.