BATTERY CELL AND METHOD OF MANUFACTURING SAME

A battery cell (100) includes: a resin insulator (800) having a first portion (810), a second portion (820), and a third portion (830), the first portion (810) being a portion that insulates a terminal portion (110) and a sealing plate (121) from each other outside an exterior container (120A), the second portion (820) being a portion that insulates a current collector (600, 700) and the sealing plate (121) from each other inside the exterior container (120A), the third portion (830) being a portion that has a tubular shape and that communicates with an electrolyte solution injection hole (120B1), wherein the third portion (830) of the resin insulator (800) includes a shielding portion (830A) that shields between at least a portion of the electrolyte solution injection hole (120B1) and an electrode assembly (200), and the first portion (810), the second portion (820) and the third portion (830) of the resin insulator (800) are molded to be integrated together.