ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

An electrochemical device includes a housing, an electrode assembly, a first conductive plate, a first layer, and a second layer. The housing includes a first wall and a side wall. The electrode assembly is a wound structure and includes a first electrode sheet. The first conductive plate includes a first and a second conductive area, connected to the first electrode sheet and the first wall, respectively. The second conductive area extends in a second direction and includes a first end portion connected to the first conductive area and a second end portion opposite the first end portion. In a first direction, the first layer is disposed between the electrode assembly and the second conductive area. When viewed from the first direction, the first layer includes a first side extending in a curved manner along an edge of the electrode assembly and a second side connected to the first side.