BUTTON LITHIUM ION BATTERY AND MANUFACTURING METHOD THEREFOR

The disclosure provides a button-type lithium ion battery and a method for fabricating the same. The lithium ion battery includes a shell, a winding core, a center upright, a pole and tabs, wherein the shell is internally provided with a cavity, the winding core is arranged in the cavity, at least one end of the center upright is provided with an opening the pole which is arranged on the shell, and whose one end extends to the inside of the opening and whose other end extends to the outside of the shell, the tabs are connected with the winding core, and the tabs extend to the inside of the opening and are electrically connected with the pole. According to the disclosure, the relatively thick pole is electrically connected with the winding core and then embedded into the center uptight so that the space inside the center upright is sufficiently utilized, the whole thickness of the shell is reduced and the utilization space of the battery is increased.