Button cell and electronic device

An electronic device, comprising a button cell, wherein, the button cell comprising:

• a first housing having a recess;
• a second housing covering the recess and connected to and fitting with the first housing to form an accommodating space;
• an electrode assembly disposed in the accommodating space and comprising a winding body and a first metal plate, wherein the winding body comprises a first electrode plate, the first electrode plate comprises a first current collector, the first metal plate is connected to the first current collector and extends out of the first current collector along a first direction, a portion of the first metal plate connected to the first current collector is a first portion, and the first direction is perpendicular to a winding direction of the winding body;
• and
• a first layer connected to the first metal plate and covering the first portion, wherein in the winding direction, the first layer comprises a first side edge and a second side edge, the first side edge and the second side edge extend out of the first current collector along the first direction, the first side edge intersects with the first current collector at a first end point, and the second side edge intersects with the first current collector at a second end point;
• wherein,
• as viewed from the first direction, a shortest straight line connecting the first end point and a winding central axis of the winding body is defined as a first virtual line, a shortest straight line connecting the second end point and the winding central axis is defined as a second virtual line;
• and
• an included angle between the first virtual line and the second virtual line is 54° to 66°.