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Preparation method for insulating coating of lithium ion battery case and lithium ion battery

A lithium-ion battery, insulating coating technology, applied in secondary batteries, battery pack components, circuits, etc., can solve the problems of short circuit of positive and negative electrodes of batteries, affecting battery safety performance, and achieve extended service life and major production practices. Significance, effect of improving safety performance

Inactive Publication Date: 2013-04-17
TIANJIN LISHEN BATTERY
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Problems solved by technology

[0005] For the existing square lithium-ion battery, if any position of the negative electrode inside the battery case is improperly assembled during the battery assembly process, and the negative electrode is exposed and then contacts the positive electrode of the battery case, a short circuit will occur between the positive and negative electrodes of the battery. problem, which seriously affects the safety performance of the battery

Method used

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  • Preparation method for insulating coating of lithium ion battery case and lithium ion battery
  • Preparation method for insulating coating of lithium ion battery case and lithium ion battery

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] see figure 1 , the present invention provides a lithium ion battery, comprising a battery case 2 coated with an insulating coating 1 .

[0026] In the present invention, specifically, an insulating coating 1 is coated on the inner wall and / or outer wall of the battery case 2 .

[0027] In the present invention, specifically, the top of the battery case 2 is open, and the outer walls around the upper part of the battery case 2 are wrapped with adhesive tape 3 .

[0028] In the present invention, specifically, the insulating coating 1 is an insulating coating made of polyimide. Of course, according to the needs of users and battery manufacturers, other insulating and corrosion-resistant coatings can also be used.

[0029] In the pres...

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Abstract

The invention discloses a lithium ion battery, which comprises a battery case (2), wherein an insulation coating (1) is coated on the battery case (2). The invention further discloses a preparation method for the insulating coating of a lithium ion battery case. The preparation method for the insulating coating of the lithium ion battery case and the lithium ion battery, disclosed by the invention, can remarkably improve the safety performance of the lithium ion battery and prolong the service life of the lithium ion battery, and the preparation method is suitable for large-scale production and application, and is good for improving the market application prospect of the products of a manufacturer, so that the preparation method has great significance on production and practice.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a preparation method of an insulating coating for a lithium ion battery case and a lithium ion battery thereof. Background technique [0002] As a new energy source with high voltage, high specific energy, long cycle life, environmental protection and pollution-free, lithium-ion battery is widely used in portable electronic devices, electric vehicles, and energy storage devices. With the increasing share of lithium-ion batteries in the new energy market, there are more and more researchers in lithium-ion battery technology, and the requirements for the performance and safety of lithium-ion batteries are also getting higher and higher. Among them, the uniformity and stability of the electrode slurry have a great influence on the performance of lithium-ion batteries. [0003] Among them, for the square lithium-ion battery, it has been widely used in MP3, MP4, personal digital a...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M2/02
CPCY02E60/10
Inventor 张大治卜雪涛
Owner TIANJIN LISHEN BATTERY
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