Battery and electronic device

Abstract

The invention provides a battery and an electronic device. The invention provides a battery. The battery comprises a battery cell and a packaging body; the packaging body comprises a battery cell accommodating area for sealing the battery cell and a packaging area located on the four side edges of the battery cell accommodating area; each packaging area comprises a heat sealing layer; a hydrophobic layer is arranged on the end surface, far away from the battery cell, of the packaging area on at least one side edge of the battery cell accommodating area, and the hydrophobic layer covers the end surface, far away from the battery cell, of the heat sealing layer; and the water contact angle of the hydrophobic layer is larger than that of the heat sealing layer. According to the battery and electronic device of the invention, the hydrophobic layer is arranged, so that the long-term water vapor permeation prevention capability of the battery is improved, materials with high cost do not need to be used, and the preparation cost of the battery is reduced.

Description

technical field [0001] The invention relates to a battery and an electronic device, and relates to the technical field of electrochemistry. Background technique [0002] With the development of science and technology, more and more electronic products have entered all aspects of people's lives, and the normal use of electronic products is inseparable from batteries. Batteries refer to devices that can convert chemical energy into electrical energy. Source, the performance of the battery is crucial to the use of electronic products. [0003] A conventional battery includes a cell and a package of a sealed cell. During the use of the battery, the performance degradation of the cell caused by water vapor entering the cell is one of the important reasons for the failure of the electrical performance and the failure of the cell package; for the electrical performance , water vapor entering the cell will cause black spots, water stains, and even serious capacity loss and gas prod...

AI Technical Summary

Problems solved by technology

[0004] At present, it is possible to prevent the entry of water vapor by improving the waterproof level of the package (for example, the waterproof level of the pack case of the power battery is IP67). However, this method has a high cost and a short effective waterproof time. In several years (such as the life requirement of 15 years of energy storage), water vapor will still seep into the battery core, and the waterproof effect is not ideal

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