Battery and electronic equipment

Abstract

The invention provides a battery which comprises a positive plate and a negative plate. The positive plate and the negative plate are wound to form a roll core structure, the positive plate comprises a current collector, a first positive smear, a second positive smear, a third positive smear and a fourth positive smear, the first positive smear is adjacent to the third positive smear, and the first positive smear and the third positive smear are coated on the first surface of the current collector; the second positive smear is adjacent to the fourth positive smear, the second positive smear and the fourth positive smear are coated on the second surface of the current collector, and the first surface of the current collector is opposite to the second surface of the current collector; the first positive smear corresponds to the second positive smear; and the first positive smear and the second positive smear are provided with a plurality of holes. According to the embodiment of the invention, the plurality of holes are formed to reduce the content of the positive active material, so that the capacity ratio of the positive electrode to the negative electrode is improved, and the risk of lithium separation of the lithium ion battery is reduced.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a battery and electronic equipment. Background technique [0002] With the development of mainstream electronic products, people have higher requirements for the battery energy density of lithium-ion batteries. At present, lithium-ion batteries with higher energy density are mainly produced through large surface density and large compacted pole pieces. However, in the prior art, lithium-ion batteries made of pole pieces with large surface density and high compaction have a small liquid retention capacity, and electrolyte shortage or partial loss is prone to occur, which leads to severe lithium-ion separation in lithium-ion batteries. . [0003] It can be seen that in the prior art, there is a serious problem of lithium ion battery desorption. Contents of the invention [0004] Embodiments of the present invention provide a battery and an electronic device to solve the probl...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a battery and electronic equipment to solve the serious problem of lithium ion battery desorption in the prior art

Images