SECONDARY BATTERY, BATTERY MODULE AND ELECTRONIC APPARATUS

Abstract

A secondary battery, a battery module, and an electronic apparatus are provided. The secondary battery includes a casing, an electrode assembly, and a current-collecting member. The casing includes an end wall provided with a first filling hole. The electrode assembly accommodated in the casing includes a first electrode sheet, a second electrode sheet, and a separator stacked and wound to form a wound structure. An end portion of the first electrode sheet includes an uncoated foil region extending from the separator in an axial direction of the electrode assembly and including a first cut segment and an uncut segment, and the uncut segment is bent to form a tab. The current-collecting member connected to the tab includes a second filling hole.

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