Electrochemical apparatus and electronic apparatus

An electrochemical apparatus, comprising:

• a housing;
• and
• an electrode assembly disposed within the housing, wherein the electrode assembly is a wound structure and comprises a first electrode plate, the first electrode plate comprises a first current collector and a first tab, a direction of a winding center axis is defined as a first direction, the first current collector comprises a first side and a second side oppositely disposed in the first direction;
• the first tab comprises a first connection region connected to the first side and a second connection region connected to the first connection region, the second connection region is bent relative to the first connection region, the electrode assembly comprises a first end face and a second end face oppositely disposed in the first direction, and the second connection region forms the first end face;
• and
• the electrochemical apparatus further comprises an insulating sleeve;
• the insulating sleeve comprises a first region and a second region integrally connected to the first region;
• the first region covers the first connection region;
• the second region is disposed on the second connection region and has a first opening;
• a portion of the second connection region is exposed from the first opening;
• the electrode assembly comprises a first portion and a second portion connected in the first direction;
• when viewed from a second direction perpendicular to the first direction, the first portion overlaps with the insulating sleeve, and the second portion does not overlap with the insulating sleeve;
• and in the second direction, a width of the first portion is less than a width of the second portion.