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Low resistance polypropylene lithium battery membrane with micropores

A lithium battery diaphragm and low-resistance technology, which is applied to battery pack components, circuits, electrical components, etc., can solve the problems that the battery is prone to thermal explosion and the diaphragm is inconvenient to operate as a whole, and achieve the effect of preventing thermal explosion

Inactive Publication Date: 2018-02-23
林杨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lithium battery diaphragm lithium battery is easy to be heated and exploded, and the traditional lithium battery diaphragm is too small to be convenient for overall operation

Method used

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  • Low resistance polypropylene lithium battery membrane with micropores

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Embodiment Construction

[0021] exist figure 1 In the illustrated embodiment, the present invention includes an ultra-high molecular membrane 1 , an epoxy anti-corrosion paint layer 2 , a thermal sensor 3 , a low-resistance material layer 4 , micropores 5 , and convex pieces 6 .

[0022] An epoxy anti-corrosion paint layer 2 is provided on one side of the ultra-high polymer diaphragm 1; a low-resistance material layer 4 is provided on the other side of the ultra-polymer diaphragm 1; micropores 5 are provided inside the low-resistance material layer 4. The thickness of the epoxy anticorrosion paint layer 2 is 10.0-10.9 μm. The material of the ultra-high molecular membrane 1 is polypropylene. A miniature thermal sensor 3 is arranged in the middle part of the ultra-high molecular membrane 1 and the epoxy anti-corrosion paint layer 2, and the thermal sensor 3 is connected in series with an external power supply, an external circuit, an external alarm module, and an external speaker circuit. One end of t...

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Abstract

The invention provides a low resistance polypropylene lithium battery membrane with micropores, aiming to overcome defects of existing lithium battery membranes. The low resistance polypropylene lithium battery membrane comprises an ultra-high molecular membrane, an epoxy anti-corrosive paint layer, a thermal sensor, a low resistance material layer, micropores, and a convex sheet. The low resistance polypropylene lithium battery membrane with micropores is provided with the thermal sensor, so as to detect temperature in the lithium battery membrane timely, and the thermal sensor is connected with an external circuit, so as to give an early warning timely to prevent thermal explosion; the membrane is coated with the epoxy anti-corrosive paint layer, thereby being improved in corrosion resistance; and the membrane is provided with the convex sheet, thereby being convenient to operate.

Description

technical field [0001] The invention relates to a device in the field of battery diaphragms, especially a device equipped with a thermal sensor that can detect the temperature in the lithium battery diaphragm in time and be connected to an external circuit to give a timely warning to prevent thermal explosion. The diaphragm is coated with an epoxy anti-corrosion paint layer to enhance the The anti-corrosion of the diaphragm and the diaphragm is provided with tabs for easy operation, with microporous low-resistance polypropylene lithium battery diaphragm. Background technique [0002] In the structure of lithium batteries, the separator is one of the key inner components. The performance of the separator determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. A separator with excellent performance plays an important role in improving the overall performance of the battery. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16H01M50/411H01M50/449
CPCH01M50/411H01M50/449Y02E60/10
Inventor 杨林
Owner 林杨