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High-voltage and wide-temperature amplitude polymer lithium battery for 3C digital camera and fabrication method of polymer lithium battery

A high-voltage, polymer technology, applied in the direction of non-aqueous electrolyte battery electrodes, circuits, electrical components, etc., can solve problems such as low cost, large-scale continuous production, affecting battery life, battery expansion and deformation, etc., to achieve Improve high-current charge and discharge performance, improve safety performance and operating temperature range, and reduce the effect of lattice constant

Inactive Publication Date: 2016-06-01
江苏海四达电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Although the volumetric energy density of the battery is higher than that of lead-acid, nickel-cadmium, and nickel-metal hydride secondary batteries, there is still a lot of room for improvement
[0004] 2. The process operation time is too long, the slurry stability is poor, and the yield rate is low. Its process technology is difficult to meet the requirements of low-cost and large-scale continuous production
[0005] 3. The internal structure of the battery is loose, and the battery core is soft. The gas generated during charging and discharging under different temperature environments is likely to cause expansion and deformation of the battery, thereby affecting the service life of the battery and even causing some safety issues.

Method used

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  • High-voltage and wide-temperature amplitude polymer lithium battery for 3C digital camera and fabrication method of polymer lithium battery
  • High-voltage and wide-temperature amplitude polymer lithium battery for 3C digital camera and fabrication method of polymer lithium battery
  • High-voltage and wide-temperature amplitude polymer lithium battery for 3C digital camera and fabrication method of polymer lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation method of high-voltage, wide-temperature polymer lithium-ion battery for 3C digital:

[0036] Manufacturing method of the positive electrode:

[0037] Positive electrode active material cobalt lithium oxide LiCoO 2, conductive material SuperP, CNT, binder PVDF-5130 and solvent in a formula ratio of 97:1:1:1:30 by weight. Stir the binder PVDF-5130 and the solvent NMP at high speed for 5 hours, then mix the stirred binder solution (50% by mass), the entire mass of the conductive material and 50% by mass of the solvent, and then add the positive active material , after high-speed stirring, add the remaining binder and solvent, and finally stir again at high speed. After adjusting the viscosity, measure the stability of the slurry with a Turbiscan analyzer, coat the prepared slurry evenly on both sides of the aluminum foil, and dry , rolling, and slitting to make a positive electrode sheet with tabs of a specific size.

[0038] Manufacturing method of negativ...

Embodiment 2

[0044] Preparation method of high-voltage, wide-temperature polymer lithium-ion battery for 3C digital:

[0045] Manufacturing method of the positive electrode:

[0046] Positive electrode active material cobalt lithium oxide LiCoO 2 , Conductive material SuperP, KS6, binder PVDF-5130 and solvent in a formula ratio of 96.5:1:1:1.5:29 by weight. Stir the binder PVDF-5130 and the solvent NMP at high speed for 4 hours, then mix the stirred binder solution (half the mass) with the entire mass of the conductive material, then add the positive active material, after high-speed stirring, add the remaining Finally, stir at high speed again, add solvent to adjust the viscosity, measure the stability of the slurry with a Turbiscan analyzer, and evenly coat the obtained slurry on both sides of the aluminum foil, dry, roll, and slitting. Positive tabs with tabs of a specific size.

[0047] Manufacturing method of negative electrode:

[0048] Mix artificial graphite, conductive graphit...

Embodiment 3

[0053] Preparation method of high-voltage, wide-temperature polymer lithium-ion battery for 3C digital:

[0054] Manufacturing method of the positive electrode:

[0055] Positive electrode active material cobalt lithium oxide LiCoO 2 , conductive material SuperP, binder PVDF-HSV900 and solvent in a formula ratio of 96.5:2:1.5:35 by weight. Stir the binder PVDF and the solvent NMP at high speed for 4 hours, then mix and stir the stirred binder solution (half the mass) and the entire mass of the conductive material, then add the positive active material, after high-speed stirring, add the remaining viscose Finally, stir at high speed again, add solvent to adjust the viscosity, measure the stability of the slurry with a Turbiscan analyzer, and evenly coat the obtained slurry on both sides of the aluminum foil, dry, roll, and slitting to make a specific Size positive tabs with lugs.

[0056] Manufacturing method of negative electrode:

[0057] Mix artificial graphite, conducti...

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Abstract

The invention relates to the technical field of fabrication of a lithium ion secondary battery, and provides a high-voltage and wide-temperature amplitude polymer lithium battery for a 3C digital camera and a fabrication method of the polymer lithium battery. The battery comprises a positive plate, a negative plate, a diaphragm, an electrolyte, a tab and a battery shell, wherein the positive plate comprises a positive active substance, a conductive agent, a binding agent and an aluminum foil, and the negative plate comprises artificial graphite, a conductive agent, a binding agent and a copper coil. A battery paste is synthesized by a high-viscosity stirring process, the paste is monitored by using a Turbiscan paste stability tester, the paste synthesis time is effectively shortened, paste dispersion is promoted, and the paste stability is improved. Meanwhile, with the combination of heating and formation, the energy density of the fabricated polymer battery is improved, the formation time of the polymer lithium ion battery is also greatly shortened, and the production efficiency of a factory is improved.

Description

technical field [0001] The invention relates to a high-voltage, wide-temperature polymer lithium-ion battery for 3C digital and a manufacturing method thereof, belonging to the technical field of polymer lithium-ion secondary manufacturing. The battery consists of a positive electrode sheet, a negative electrode sheet, a diaphragm, an electrolyte, tabs and a battery casing. The positive electrode sheet includes positive active materials, conductive agents, binders and aluminum foil, and the negative electrode sheet includes artificial graphite, conductive agents, binders and Copper foil, the separator is a microporous polypropylene or polyethylene ceramic coated with a layer of nano-scale aluminum oxide on the surface, and the electrolyte is an additive and lithium salt with high pressure resistance, high safety, and wide temperature range characteristics. Solvent composition. Background technique [0002] Compared with traditional lead-acid, nickel-cadmium, and nickel-hydr...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M4/13
CPCY02E60/10
Inventor 沈晓彦沙永香王进郑拓
Owner 江苏海四达电源有限公司
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