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A polymer lithium ion battery and a preparation method thereof

A technology of lithium-ion batteries and polymers, applied in the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problems of large manpower and material resources loss, poor resistance of battery shells, aluminum-plastic shells, and low production efficiency. Effect of reducing effective width, multiple spaces and possibilities, and improving utilization

Inactive Publication Date: 2018-12-28
TIANJIN LISHEN BATTERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the above method fails to fundamentally solve the problems of poor shell resistance of the battery and shell corrosion of the aluminum plastic shell caused by the ultra-thin packaging. At the same time, the production efficiency of this process is low, and the loss of manpower and material resources is large.

Method used

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  • A polymer lithium ion battery and a preparation method thereof
  • A polymer lithium ion battery and a preparation method thereof
  • A polymer lithium ion battery and a preparation method thereof

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Embodiment Construction

[0040] 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.

[0041] see Figure 1 to Figure 5 , the present invention provides a polymer lithium ion battery, comprising a battery body 5, the battery body 5 has a battery casing 50 outside, and the left and right sides of the battery casing 50 have a stepped side 2 respectively.

[0042] Specifically, each of the stepped sides 2 includes a first encapsulation part 21 and a second encapsulation part 22 distributed horizontally, and the first encapsulation part 21 is farther from the battery case than the second encapsulation part 22 50 is farther; that is, the first packaging part 21 is a part away from the battery case 50, and the second packaging part 22 is a part close to the battery case 50;

[0043] The thickness of the first encapsulation part 21 ...

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Abstract

The invention discloses a polymer lithium ion battery, characterized by comprising a battery body (5), the exterior of the battery body (5) is provided with a battery case (50), and left and right sides of the battery case (50) are respectively provided with a stepped side (2). In addition, the invention also discloses a preparation method of a polymer lithium ion battery. The invention disclosesa polymer lithium ion battery and a preparation method thereof, which can effectively encapsulate polymer lithium ion batteries, the side edge of the polymer lithium ion battery is ultra-thin, and theeffective width of the battery can be reduced; the technical scheme provides more space and possibility for the capacity improvement of the battery, and ensures the good sealing property of the polymer lithium ion battery, effectively avoids the bad resistance of the shell and the corrosion of the electrolyte to the aluminum plastic shell; the battery can be conveniently manufactured, which is beneficial to the wide application and has great significance in the production practice.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a polymer lithium ion battery and a preparation method thereof. Background technique [0002] At present, polymer lithium-ion batteries have the advantages of high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, but also widely used in electric vehicles, In terms of large and medium-sized electric equipment such as electric bicycles and electric tools, the requirements for the quality pass rate of polymer lithium-ion batteries are getting higher and higher. [0003] As the demand for energy density of polymer lithium-ion batteries continues to increase, the aluminum plastic case used is getting thinner and thinner, and the PP (polypropylene) plastic layer in the aluminum plastic case is also relatively thin, which poses a challenge to the reliabil...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M10/058
CPCH01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 李伟押媛媛曹素良柴骁函张宏芳贾学恒
Owner TIANJIN LISHEN BATTERY
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