Method for preparing ceramic diaphragm, ceramic diaphragm and power lithium battery

A technology of ceramic diaphragm and ceramic particles, applied in the direction of batteries, secondary batteries, battery pack components, etc., can solve problems such as explosion, thermal runaway of power lithium batteries, and hazards.

Pending Publication Date: 2019-04-19
SUNWODA ELECTRIC VEHICLE BATTERY CO LTD
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  • Abstract
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a preparation method of a ceramic diaphragm, a ceramic diaphragm and a power lithium battery, aiming at solving daily use safety problems such as thermal runaway of the power lithium battery caused by high temperature, causing fire and explosion hazards of the power lithium battery

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  • Method for preparing ceramic diaphragm, ceramic diaphragm and power lithium battery
  • Method for preparing ceramic diaphragm, ceramic diaphragm and power lithium battery
  • Method for preparing ceramic diaphragm, ceramic diaphragm and power lithium battery

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] Such as figure 1 As shown, the present invention provides a ceramic diaphragm 1, the ceramic diaphragm 1 includes a substrate layer 11 and a coating layer, the substrate layer 11 includes an upper surface and a lower surface, and the coating layer covers the upper surface and the lower surface of the substrate layer 11 , the above-mentioned coating layer is made of inorganic nano ceramic particles. The coating layer made of inorganic nano-ceramic particles strengthens the heat insulation, flame retardancy, and insulation properties of the ceramic diaphragm 1, and provides mechanical support...

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Abstract

The invention relates to the technical field of power lithium battery manufacturing, in particular to a method for preparing a ceramic diaphragm, a ceramic diaphragm and a power lithium battery. The ceramic diaphragm includes a substrate layer including an upper surface and a lower surface, and the coating layer covering the upper surface and the lower surface of the substrate layer, wherein the coating layer is made of the nano ceramic particles. The objective of the invention is to solve the problem of daily use safety such as fire and explosion hazard of the power lithium battery caused bythe high temperature causing thermal runaway of the power lithium battery.

Description

technical field [0001] The invention relates to the technical field of power lithium battery manufacturing, in particular to a preparation method of a ceramic diaphragm, a ceramic diaphragm and a power lithium battery. Background technique [0002] In recent years, the production and sales of new energy vehicles have shown explosive growth. As the core component of new energy vehicles, the safety of power lithium batteries has become a key factor and technical problem for the large-scale popularization and application of new energy vehicles. Separators play a vital role in the safety of lithium batteries. High energy density power battery is easy to induce internal self-generated heat accumulation under abuse conditions (overcharge, internal short circuit, external heating, etc.), resulting in high temperature and shrinking and melting of the diaphragm, which in turn causes a large area of ​​internal short circuit in the battery and eventually leads to thermal runaway of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16H01M10/0525H01M50/403H01M50/434H01M50/443
CPCH01M10/0525H01M2220/20H01M50/403H01M50/431H01M50/449Y02E60/10
Inventor 冷利民安欣欣戴亨伟张耀王明旺
Owner SUNWODA ELECTRIC VEHICLE BATTERY CO LTD
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