ELECTROCHEMICAL DEVICE AND ELECTRIC DEVICE

Abstract: an electrochemical device, including a wound electrode assembly; the electrode assembly has a winding centerline, the electrode assembly includes a positive electrode plate, and along a winding direction of the positive electrode plate, a positive electrode active material layer of the positive electrode plate has a positive electrode winding starting end and a positive electrode winding ending end. a straight line passing through the positive electrode winding ending end and orthogonal to the winding centerline is defined as a first reference line, a straight line orthogonal to the first reference line and orthogonal to the winding centerline is defined as a second reference line, and a straight line passing through the positive electrode winding starting end and orthogonal to the winding centerline is defined as a third reference line, where a zero or acute angle � exists between the third reference line and the second reference line, satisfying 0�≤�≤30�.

Inventor(s): Tengteng Chen

CPC Classification: H01M10/0587 (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY)

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