Battery pole piece and preparation method thereof and lithium-ion battery

A battery pole piece, pole piece technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as short circuit at the edge of battery pole pieces, and achieve the effect of solving short circuit, convenient and fast operation, and ensuring safety.

Inactive Publication Date: 2017-05-10
CHENGDU INTERSTELLAR SOLID STATE LI LON BATTERIES TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the technical problem that a short circuit occurs at the edge of the existing battery

Method used

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  • Battery pole piece and preparation method thereof and lithium-ion battery
  • Battery pole piece and preparation method thereof and lithium-ion battery
  • Battery pole piece and preparation method thereof and lithium-ion battery

Examples

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[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0033] The invention provides a method for preparing battery pole pieces, such as figure 1 Shown, including:

[0034] Step S1: Provide prefabricated pole pieces after slitting;

[0035] Step S2: Provide a photoinitiated polymer precursor; it should be noted here that step S1 and step S2 can be performed simultaneously or sequentially, and there is no limitation on the order of sequence;

[0036] Step S3: forming the photo-initiated polymer precursor liquid on the edge of the prefabricated pole piece; and

[0037] Step S4: Place the prefabricated pole piece under light, and cure the photo-initiated p...

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PUM

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Abstract

The invention relates to the technical field of lithium batteries, in particular to a battery pole piece and a preparation method thereof and a lithium-ion battery. The preparation method of the battery pole piece comprises the following steps of providing a cut prefabricated pole piece and a photoinduced polymer precursor solution; forming the photoinduced polymer precursor solution on the edge of the prefabricated pole piece; and putting the prefabricated pole piece in the light and solidifying the photoinduced polymer precursor solution to obtain the battery pole piece with an insulating film on the edge. The insulating film can cover burrs caused by cutting, the problem that a short circuit can be generated on the edge of the battery pole piece is fundamentally solved and the security performance of the battery pole piece is effectively improved. The battery pole piece comprises the prefabricated pole piece and the insulating film formed on the edge of the prefabricated pole piece, wherein the insulating film is obtained by solidifying the photoinduced polymer precursor solution, and the security performance is good. The invention further provides the lithium-ion battery, which comprises the battery pole piece. The security and the stability are good and the service life is long.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of lithium batteries, in particular to a battery pole piece, a preparation method thereof, and a lithium ion battery. [0003] 【Background technique】 [0004] As a new energy technology, battery technology is developing very rapidly. Among them, lithium-ion batteries have the advantages of small size, light weight, high energy density, and low environmental pollution. Therefore, lithium-ion batteries have been widely used in mobile phones, notebook computers and other electronic products. , and become one of the preferred power sources for power batteries for electric vehicles in the future. [0005] However, during the cutting process of the battery pole piece of the lithium-ion battery, burrs will be generated on the edge of the battery pole piece. These burrs make the battery pole pieces prone to misalignment and short circuit during the subsequent stacking process, which in turn affects the safe...

Claims

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Application Information

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IPC IPC(8): H01M4/139H01M4/137H01M10/0525H01M4/1399
CPCH01M4/137H01M4/139H01M4/1399H01M10/0525Y02E60/10
Inventor 吴锐向勇彭晓丽贺永云
Owner CHENGDU INTERSTELLAR SOLID STATE LI LON BATTERIES TECH CO LTD
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