▎ 摘　　要

NOVELTY - Electrochemical device comprises a clapboard (30) and multiple electrode components in a shell (10), where the clopboard comprises a heating component. USE - The electrochemical device is useful in electric device (claimed). ADVANTAGE - The electrochemical device: optimizes clapboard performance of high output voltage battery; and improves energy density reduction caused by internal heating mode in existing technology, self-discharge problem, and reliability risk. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the electrochemical device. 10Shell 30Clapboard 50Electrode assembly 51First electrode assembly 52Second electrode assembly 100Electrochemical device 501First tab 502Second tab 3010First terminal 3014Second terminal