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Flame-retardant explosion-proof solid-state battery with stable polymer and ceramic electrolyte components

A ceramic electrolyte, flame retardant and explosion-proof technology, which is applied in the field of lithium batteries, can solve the problem of not being able to solve the problem of acupuncture not exploding when fully charged

Pending Publication Date: 2021-11-30
慈溪斯昂尼电池有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A lot of research work believes that adding aluminum oxide alone to various existing electrolytes, including flame-retardant electrolytes, cannot solve the problem of non-explosion in fully charged acupuncture, so now a lot of research work is further increasing Measures such as solid electrolytes to solve safety issues such as fully charged acupuncture

Method used

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Embodiment Construction

[0005] The invention proposes a method of high-speed dispersion of the electrolyte mixed solution added with nano-aluminum oxide particles through a high-end battery pole piece pulping project to make a well-dispersed and stable mixed solution. The method of the invention has practicability and is greatly superior to various existing technical solutions.

[0006] One embodiment of the present invention is to disperse the nano-alumina particles into the electrolytic solution by a high-speed dispersion and stable pulping process to form a flame-retardant mixed solution.

[0007] The particle size range of the nano-alumina or modified particles of the present invention is 1.2nm to 500nm. The monomolecular crystal plane of nano-alumina has reached 12 angstroms, that is, 1.2nm. It is impossible to select from the range of 1nm-500nm like the Chinese invention authorization CN200610170590.8. The preferred solution of the present invention is from 1.2nm to 13nm.

[0008] One embodime...

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Abstract

The invention relates to a flame-retardant explosion-proof solid-state battery with stable polymer and ceramic electrolyte components, and belongs to the technical field of lithium batteries. An electrolyte mixed solution added with nano aluminum oxide particles is prepared into a mixed solution which is uniformly dispersed and is high in stability through a high-speed dispersion method of a high-end battery pole piece pulping project. The innovative and practical method greatly improves the dispersity of the slurry after the nano aluminum oxide particles are added into the electrolyte to form the mixed solution with uniformly dispersed aluminum oxide particles, and the mixed solution is stable and does not precipitate. Under the condition that the electrical performance of the lithium battery is not influenced, the safety flame-retardant problems of full-power acupuncture, extrusion, thermal abuse and the like can be greatly improved and solved.

Description

technical field [0001] The invention relates to a flame-retardant and explosion-proof solid-state battery with stable polymer and ceramic electrolyte components, belonging to the technical field of lithium batteries. Background technique [0002] At present, the safety of lithium batteries has always been a focal issue. Taking the 18650 cylindrical lithium-ion battery as an example, it is generally composed of a positive electrode, a negative electrode, a separator, an electrolyte (or a solid electrolyte), and a casing. The casing consists of a cylindrical shell. The assembly method of lithium batteries is generally to first make the positive and negative electrodes into the core, and then put the core into the battery case. The square winding core is placed inside the square battery case, the soft-packed plastic film winding core is placed inside the aluminum-plastic film, and the cylindrical winding core is placed inside the cylindrical steel case. Taking the cylindrical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567H01M10/052H01M10/0525A62C3/16
CPCH01M10/0567H01M10/052H01M10/0525A62C3/16Y02E60/10
Inventor 马昕
Owner 慈溪斯昂尼电池有限公司
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