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Lithium ion battery preparation method and lithium battery thereof

A lithium-ion battery, electrolyte injection technology, applied in battery electrodes, electrolyte battery manufacturing, secondary batteries, etc., can solve problems such as explosion, battery fire, battery short circuit, etc., to achieve high energy density, energy density improvement, production operation handy effect

Active Publication Date: 2020-05-12
EVE HYPERPOWER BATTERIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preferential growth of this lithium metal part area will produce dendritic lithium dendrites. During the cycle, the lithium dendrites will continue to grow until they pierce the separator, causing the positive and negative electrodes in the battery to contact and cause a short circuit, which will cause the battery to catch fire or even explode.

Method used

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  • Lithium ion battery preparation method and lithium battery thereof
  • Lithium ion battery preparation method and lithium battery thereof
  • Lithium ion battery preparation method and lithium battery thereof

Examples

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Embodiment Construction

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...

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Abstract

The invention relates to a lithium ion battery preparation method and a lithium ion battery thereof. The lithium ion battery preparation method comprises the following steps: coating a cathode activematerial mixture on the A surface of an aluminum foil, and coating an insulating layer on the B surface of the aluminum foil; electroplating metal lithium on the surface A of the copper foil, and coating the insulating layer on the surface B of the copper foil; arranging a diaphragm between the positive plate and the negative plate, and oppositely arranging the surface A of the positive plate andthe surface B of the negative plate or oppositely arranging the surface A of the negative plate and the surface B of the positive plate; and carrying out winding operation on the battery cell groups or stacking a plurality of battery cell groups. According to the preparation method of the lithium ion battery, the positive plate with the single-sided active material and the negative plate with thelithium metal as the anode are arranged, the insulating layers are arranged on the positive plate and the negative plate, so that the generated lithium dendrites can be blocked, and the lithium dendrites are prevented from being in contact with the positive plate to cause short circuit.

Description

technical field [0001] The invention relates to the technical field of battery preparation, in particular to a preparation method of a lithium ion battery and a lithium battery thereof. Background technique [0002] Lithium-ion battery is currently the most widely used chemical energy storage device, which has the characteristics of low pollution, high cycle efficiency, flexible adjustment of capacity and energy, fast response and high degree of commercialization. However, low energy density limits its large-scale application in the field of electric mobility. It is difficult for lithium-ion batteries using graphite as the negative electrode to meet the energy density requirements. The development of new high-capacity negative electrodes is an important prerequisite for the next generation of lithium-ion batteries. Compared with the currently widely used graphite anode, the lithium metal anode can provide more capacity (3860mAh / g) and more negative potential, so lithium-sulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/0583H01M10/0525H01M4/38
CPCH01M4/382H01M10/0525H01M10/058H01M10/0583H01M2004/027Y02E60/10Y02P70/50
Inventor 邱传洲刘荣江洪斯凡林森王理祝媛刘金成
Owner EVE HYPERPOWER BATTERIES INC
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