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A kind of soft shell for battery, its preparation method and application

A battery and soft shell technology, which is applied in the field of its preparation and battery soft shell, can solve the problems of complex process and high cost, and achieve the effect of accurate judgment, reducing procedures and workload

Active Publication Date: 2021-01-12
SUZHOU QINGTAO NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For CO in existing Li-ion batteries 2 Monitoring needs the help of testing equipment, high cost and complicated process

Method used

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  • A kind of soft shell for battery, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] (1) Preparation of transparent identification part:

[0068] Dissolve 3 mol of methacrylate and 1 mol of N-amidino hexadecyl acrylamide in 20 mL of dimethyl sulfoxide, mix well in the reactor, use RAFT polymerization reaction method, react for 10 h, wash after the treatment, Finally, dialyze and freeze-dry to obtain carbon dioxide-responsive polymer materials;

[0069]Making the carbon dioxide-responsive polymer material into a carbon dioxide-responsive film with a thickness of 50 μm, and adhering the carbon dioxide-responsive film to a polyethylene transparent film with an equal area and a thickness of 40 μm to obtain a transparent identification part;

[0070] (2) Preparation of soft shell for battery:

[0071] Composed of substrate layer (polyamide), metal foil layer (phosphate-treated aluminum foil), heat-sealing layer (cyclic polyolefin), and between the substrate layer and the metal foil layer, between the metal foil layer and the heat-sealing layer An aluminum-...

Embodiment 2

[0076] Compared with Example 1, the difference is that: on the basis of the battery of Example 1, a second transparent identification part is also provided. In the second transparent identification part, methacrylate and N-amidinohexadecylpropylene The molar ratio of amides is 1:5.

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Abstract

The invention discloses a soft shell for batteries, its preparation method and use. The battery soft case includes a transparent identification part composed of a resin layer and a carbon dioxide response layer. The battery soft case of the present invention is suitable for all batteries that produce carbon dioxide during use. With the structure of the present invention, the performance and quality of the battery can be initially judged after the first charge and discharge process is completed, and defects can be discovered in time. Qualified products; at the same time, the amount of carbon dioxide released inside the battery is judged based on the transparent state of the carbon dioxide responsive film, and then the battery performance and status are preliminarily judged, which greatly reduces the battery testing procedures and workload. At the same time, due to the carbon dioxide responsiveness The film detects carbon dioxide by reacting with carbon dioxide. Therefore, it is expected that the carbon dioxide-responsive film can absorb the carbon dioxide generated during battery use and further improve the performance of the battery.

Description

Technical field [0001] The invention belongs to the field of battery technology, and specifically relates to a soft shell for batteries, its preparation method and use. Background technique [0002] With the continuous consumption of fossil energy and the increasing environmental pollution problem, the development and effective utilization of new renewable energy has become an important issue for mankind. In recent years, pure electric vehicles, hybrid vehicles, and drones have entered a stage of rapid development and popularization. Researching and developing corresponding high-security energy storage equipment has become one of the technical problems that urgently need to be overcome. [0003] Lithium-ion batteries are widely used in the field of energy storage equipment due to their high energy density, high output voltage, and good safety and stability. However, there are still many problems during the use of lithium batteries. Among them, the issue of carbon dioxide ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/129H01M10/052H01M10/058H01M10/48
CPCH01M10/058H01M10/052H01M10/488Y02E60/10Y02P70/50
Inventor 李峥冯玉川何泓材周柯王丹丹杨帆
Owner SUZHOU QINGTAO NEW ENERGY TECH CO LTD