Gel electrolyte membrane, lithium ion battery and preparation method thereof

A gel electrolyte and lithium-ion battery technology, applied in the field of lithium-ion batteries, can solve problems such as poor controllability of strength, and achieve the effects of convenient operation, strong controllability, and controllable mechanical strength

Active Publication Date: 2019-07-05
衡电科技(成都)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the technical problem of poor controllability of the mechanical strength of the existing polymer electrolyte membrane, the invention provides a gel electrolyte membrane, a lithium ion battery and a preparation method thereof

Method used

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  • Gel electrolyte membrane, lithium ion battery and preparation method thereof
  • Gel electrolyte membrane, lithium ion battery and preparation method thereof
  • Gel electrolyte membrane, lithium ion battery and preparation method thereof

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] The first embodiment of the present invention provides a method for preparing a gel electrolyte membrane, which includes: step S1, providing battery pole pieces; step S2, preparing gel electrolyte precursors with different viscosities; step S3, using the gel electrolyte The precursor forms a gel electrolyte membrane on at least one surface of the pole piece, and the mechanical strength of the gel electrolyte membrane prepared by the gel electrolyte precursor at different viscosities is tested to make a corresponding viscosity-mechanical strength standard curve. According to t...

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Abstract

The invention relates to a gel electrolyte membrane, a lithium ion battery, and preparation methods therefor. The preparation method for the gel electrolyte membrane comprises the steps of providing a battery electrode plate; preparing gel electrolyte precursors of different viscosities; and forming the gel electrolyte membranes on at least one surface of the electrode plate by the gel electrolyte precursors of different viscosities, testing the mechanical strengths of the gel electrolyte membranes prepared from the gel electrolyte precursors of different viscosities, making a corresponding viscosity-mechanical strength standard curve, and obtaining a target gel electrolyte membrane prepared by selecting the gel electrolyte precursors of different viscosities according to the standard curve corresponding to the predetermined mechanical strength of the target gel electrolyte membrane. The invention also relates to the gel electrolyte membrane prepared by the method, and also relates to a preparation method for the lithium ion battery which is prepared from a gel electrolyte membrane cell after the gel electrolyte membrane cell is obtained by adopting the gel electrolyte membrane, and the lithium ion battery prepared by the lithium ion battery preparation method.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of lithium ion batteries, in particular to a gel electrolyte membrane, a lithium ion battery and a preparation method thereof. [0003] 【Background technique】 [0004] The field of lithium-ion batteries as the main power source has developed from portable mobile devices to power vehicles and large energy storage devices. With social development and scientific and technological progress, people's demand for high-power and large-capacity lithium-ion batteries is becoming more and more urgent, and safety is the primary problem that needs to be solved in the development of large-scale lithium-ion batteries in the future. The liquid electrolytes commonly used in liquid lithium-ion batteries contain organic solvents with low flash point and low fire point, which are flammable and explosive. The battery is extremely easy to catch fire, burn or even explode under extreme conditions such as short circuit, ove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565H01M10/0525H01M10/058
CPCH01M10/0525H01M10/0565H01M10/058H01M2300/0082Y02E60/10Y02P70/50
Inventor 夏立向勇彭晓丽蒲万锦贺金味
Owner 衡电科技(成都)有限公司
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