Pole piece and battery

A pole piece and battery technology, applied in the field of pole pieces and batteries, can solve the problem of serious lithium deposition in batteries, and achieve the effects of reducing conduction impedance, increasing the direction of bonding, and prolonging service life.

Pending Publication Date: 2022-05-06
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a pole piece and a battery to solve the serious problem of battery lithium deposition in the related art

Method used

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  • Pole piece and battery
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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] Please refer to figure 1 ,Such as figure 1 As shown, the embodiment of the present invention provides a pole piece, including: a current collector 10, a first coating 21 and a second coating 22, wherein,

[0031] The first coating 21 is coated on the surface of the current collector 10 , and at least two second coatings 22 are coated on the surface of the first coating 21 away from the current collector 10 at intervals.

[0032] In this embodi...

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Abstract

The invention provides a pole piece which comprises a current collector, a first coating and second coatings, the surface of the current collector is coated with the first coating, and the surface, away from the current collector, of the first coating is coated with the at least two second coatings at intervals. According to the embodiment of the invention, the surface, far away from the current collector, of the first coating is coated with the at least two second coatings, so that the contact surface area of the pole pieces and electrolyte and the electric circulation area between the pole pieces can be increased, the combination direction between lithium ions and electrons is increased, the conduction impedance of the battery is reduced, lithium precipitation of the battery is inhibited, and the service life of the battery is prolonged. And the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a pole piece and a battery. Background technique [0002] Lithium batteries are widely used in the field of mobile devices and new energy due to their long life, large specific capacity and no memory effect. In related technologies, due to the continuous increase in the requirements for the capacity and energy density of the lithium battery, the degree of compaction of the materials of the lithium battery is continuously improved. However, in the related art, due to the high impedance between the pole pieces of the lithium battery, the battery is seriously decomposed of lithium, which in turn leads to the problem of battery damage. [0003] It can be seen that there is a serious problem of lithium separation in the battery in the related art. Contents of the invention [0004] Embodiments of the present invention provide a pole piece and a battery, so as to solve the proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139H01M4/66H01M10/052
CPCH01M4/13H01M4/139H01M4/667H01M4/668H01M10/052
Inventor 潘珊珊刘春洋李素丽
Owner ZHUHAI COSMX BATTERY CO LTD
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