Secondary battery and electronic device

A secondary battery, comprising a packaging bag, an electrode assembly, and a first tab;

• wherein the electrode assembly is accommodated in the packaging bag, the first tab is electrically connected to the electrode assembly and protrudes out of the packaging bag along a first direction;
• the electrode assembly has a jelly-roll structure and comprises a first end surface, a first side surface, a first curved surface, and a second side surface;
• and the first side surface, the first curved surface, and the second side surface are disposed around a periphery of the first end surface;
• the secondary battery further comprises a first insulation tape and a second insulation tape;
• the first insulation tape comprises a tape body and a first protruding portion;
• the tape body is bonded to the first side surface, the first curved surface, and the second side surface separately;
• the first protruding portion exceeds a negative electrode plate of the electrode assembly along the first direction, the first protruding portion comprises a first section and a second section, the first section and the second section are disposed opposite to each other along a second direction, the second direction is perpendicular to the first direction, and the second direction is a thickness direction of the electrode assembly;
• and
• the second insulation tape is bonded to the first end surface, the first section, and the second section separately.