ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME

The present application provides an electrochemical device in which the resistance of a first region is increased by making the resistance per unit length R1 of the first region greater than the resistance per unit length R2 of a second region and satisfying 1.5 < = R1/R2 < = 12, and an electronic device including the same. Therefore, when the electrochemical device is short-circuited, over-current charging and other abnormalities occur, the current can assist in heat production when passing through the first region, and the temperature can be increased more quickly than that of the second region. Therefore, the tab glue in the first area is fused, the packaging position of the tab corresponding to the fused part and the top seal of the shell is invalid, gas generated by the electrolyte is discharged from the packaging failure position of the top seal, and the electrochemical device realizes an exhaust effect in advance. Therefore, the risks of fire, explosion and the like of the electrochemical device are re