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Novel composite diaphragm for lithium battery

A composite diaphragm and lithium battery technology, which is applied to battery pack components, separators/films/diaphragms/spacers, circuits, etc., can solve the problems of poor elasticity of lithium battery diaphragms, single nature and easy damage of lithium battery diaphragms, etc. , to enhance the effect of elasticity

Inactive Publication Date: 2017-12-29
赵淑平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The poor elasticity of the lithium battery diaphragm is easily damaged, and the properties of the lithium battery diaphragm are single

Method used

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  • Novel composite diaphragm for lithium battery
  • Novel composite diaphragm for lithium battery

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Experimental program
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Embodiment Construction

[0025] exist figure 1 , In the embodiment shown in 2, the present invention includes a square combined board 1, a rectangular combined board 2, an "L" shaped combined board 3, a "Z" shaped combined board 4, a convex combined board 5, a concave Combined board 6, ultra-high molecular membrane 7, combined board layer 8, BR rubber particle layer 9.

[0026] One side of the ultra-high polymer diaphragm 7 is provided with a composite insert layer 8; the other side of the ultra-high polymer diaphragm 7 is provided with a BR rubber particle layer 9. The combined board layer 8 has a thickness of 10.2 μm; the BR rubber particle layer 9 has a thickness of 8.2 μm. The combined board layer 8 includes a square combined board 1, a rectangular combined board 2, an "L" shaped board 3, a "Z" shaped board 4, a convex board 5, and a concave board. Plug board 6.

[0027] The material of the square composite board 1 can be polyethylene, aluminum oxide or polypropylene; the material of the rectan...

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Abstract

The invention provides a novel composite diaphragm for a lithium battery to overcome shortcomings of conventional lithium battery diaphragms. The novel composite polyethylene diaphragm comprises square combined plugboards, rectangular combined plugboards, L-shaped combined plugboards, Z-shaped combined plugboards, a convex combined plugboard, a concave combined plugboard, an ultra-high-molecular diaphragm, a combined plugboard layer and a BR rubber particle layer. The novel composite diaphragm is provided with the multi-material combined plugboard layer, so splicing can be carried out as needed so as to change the properties of the diaphragm; and the BR rubber particle layer is arranged to improve the elasticity of the diaphragm.

Description

technical field [0001] The invention relates to a device in the field of battery diaphragms, in particular to a novel composite diaphragm for lithium batteries which is provided with a multi-material composite insert layer which can be spliced ​​to change the properties of the diaphragm, and which is also provided with a BR rubber particle layer to enhance the elasticity of the 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. The main function of the diaphragm is to separate the positive and negative electrodes of the battery, prevent the two electrodes from contacting and short circuit, and als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16H01M2/18H01M50/443H01M50/463
CPCH01M50/463H01M50/411Y02E60/10
Inventor 赵淑平
Owner 赵淑平