Electrochemical device and electronic device

• Main Author: YAN JIAXIAO
• Format: Patent
• Language: Chinese; English
• Published: 02.12.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses an electrochemical device and an electronic device.The electrochemical device comprises a shell, an electrode assembly, a first tab and at least two first conductive parts, the electrode assembly comprises a first pole piece, and the first pole piece comprises a first composite current collector and a first active material layer arranged on the surface of the first composite current collector; the first composite current collector comprises a first region and a plurality of second regions which are oppositely arranged, the first active material layer is provided with a first groove for exposing the first region and a second groove for exposing the second region, and the first tab is connected to the first region and partially extends out of the first region. Wherein the first end of a first conductive part is connected to a second area, the second end of the first conductive part extends out of the edge of the first composite current collector in the direction away from the first tab,