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Lithium battery with long service life

A lithium battery, life-span technology, applied in the direction of secondary batteries, battery pack components, battery boxes/coats, etc., can solve the problems of lithium battery life reduction, high risk, explosion, etc., to ensure safety performance and service life , protection and service life, and the effect of improving safety performance

Pending Publication Date: 2019-08-23
扬州市李伟照明电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different material systems and device structures used, the packaging materials and processes of traditional lithium batteries cannot be applied to all-solid-state lithium battery devices.
At present, the existing aluminum-plastic film packaging process has poor heat dissipation and high risk. Whether it is the accumulation of temperature inside the lithium battery or the high temperature conduction in the battery tank, the lithium battery will quickly heat up and burn, and in severe cases, it will An explosion will affect the use of the lithium battery itself and the surrounding electronic components, and at the same time reduce the service life of the lithium battery; and some substances in the aluminum-plastic film will react with the lithium metal or lithium alloy negative electrode

Method used

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  • Lithium battery with long service life
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  • Lithium battery with long service life

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A long-life lithium battery includes a packaging structure and a lithium battery cell arranged in the packaging structure. The lithium battery cell includes a first current collector, a negative electrode layer, an electrolyte layer, a positive electrode layer and a second current collector; the packaging structure includes the following Parts by weight of material:

[0038]

[0039] The number average molecular weight of polyethylene terephthalate is 10000g / mol; the thickness of the first current collector and the second current collector is 5μm; the thickness of the positive electrode layer is 6μm; the thickness of the electrolyte layer is 0.1μm; An insulating layer is also provided between the core and the packaging structure; the material of the insulating layer is tetrafluoroethylene-hydrocarbon propylene copolymer; the insulating layer and the bottom inner wall of the packaging structure are provided with a first heat dissipation plate; the insulating layer and both s...

Embodiment 2

[0041] A long-life lithium battery, comprising a packaging structure and a lithium battery cell arranged in the packaging structure. The lithium battery cell includes a first current collector, a negative electrode layer, an electrolyte layer, a positive electrode layer and a second current collector; the packaging structure Including the following parts by weight:

[0042]

[0043] The number average molecular weight of polyethylene terephthalate is 12000g / mol; the thickness of the first current collector and the second current collector is 6μm; the thickness of the positive electrode layer is 10μm; the thickness of the electrolyte layer is 2μm; lithium battery cell An insulation layer is also provided between the packaging structure and the insulation layer, and the material of the insulation layer is perfluoroether rubber; the insulation layer and the bottom inner wall of the packaging structure are provided with a first heat dissipation plate; the insulation layer and the two ...

Embodiment 3

[0045] A long-life lithium battery includes a packaging structure and a lithium battery cell arranged in the packaging structure. The lithium battery cell includes a first current collector, a negative electrode layer, an electrolyte layer, a positive electrode layer and a second current collector; the packaging structure includes the following Parts by weight of material:

[0046]

[0047] The number average molecular weight of polyethylene terephthalate is 20000g / mol; the thickness of the first current collector and the second current collector is 8μm; the thickness of the positive electrode layer is 60μm; the thickness of the electrolyte layer is 10μm; lithium battery cell There is also an insulating layer between the insulating layer and the packaging structure; the material of the insulating layer is tetrafluoroethylene-propylene copolymer; the insulating layer and the bottom inner wall of the packaging structure are provided with a first heat dissipation plate; There are a ...

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Abstract

The invention discloses a lithium battery, and the lithium battery comprises a packaging structure and a lithium battery cell arranged in the packaging structure. The lithium battery cell comprises afirst current collector, a negative electrode layer, an electrolyte layer, a positive electrode layer and a second current collector. The packaging structure contains the following materials in partsby weight: 50-52 parts of polyethylene glycol terephthalate; 28-30 parts of polyamide; 12-14 parts of triacetyl cellulose; 2-4 parts of aluminum nitride; 1-3 parts of zirconium nitride; 3-5 parts of silicon nitride; and 0.2-2 parts of yttrium nitride. According to the lithium battery with the long service life, the packaging structure is arranged to protect and prolong the service life of the all-solid-state lithium battery, the battery structure can be effectively prevented from being damaged by an external force, and the battery structure is effectively protected; an insulating layer is arranged in the packaging structure, so that the safety performance of the lithium battery is improved; and through the arrangement of the heat dissipation plate, the heat is prevented from accumulating on the insulating layer, thereby guaranteeing the safety performance and the service life of the lithium battery.

Description

Technical field [0001] The invention relates to the technical field of batteries, and in particular to a high-life lithium battery. Background technique [0002] Lithium batteries are very popular in various fields due to their excellent performance. However, due to the strong chemical activity of lithium ions, the danger of lithium ions is also high. In particular, lithium batteries must not be physically damaged, such as using metal pointed tools to damage lithium batteries. When punctured, it is easy for the positive and negative film layers inside the lithium battery to be penetrated by metal and short-circuited, causing the lithium battery to quickly heat up, burn, or explode in severe cases. [0003] The demand for power from various electronic products has prompted the rapid development of the battery industry. As a result, a variety of batteries have emerged on the market. Among them, lithium batteries have been widely used in various industries such as electric ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/613H01M10/6554H01M10/653H01M10/058H01M10/0525
CPCH01M10/0525H01M10/058H01M10/613H01M10/653H01M10/6554H01M50/116Y02E60/10Y02P70/50
Inventor 李伟
Owner 扬州市李伟照明电器有限公司
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