Water-based ion battery plate manufacturing process

A technology of ion battery and manufacturing process, which is applied in the direction of electrode manufacturing, electrode rolling/calendering, etc., which can solve the problems of plate thickness not greater than 1mm, low material utilization rate, and non-recyclability, etc., so as to achieve easy control of surface density and thickness , high material utilization and high production efficiency

Inactive Publication Date: 2017-05-10
ZHEJIANG WELLY ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mixture formed by the active material, conductive agent, binder and solvent is mostly assembled with the current collector by the coating method, that is, the mixture is first coated on the current collector, and after drying, it is rolled and punched to the required size. The thickness of the electrode plate produced by this method cannot be greater than 1mm, and serious material loss and cracking will occur if it is greater than 1mm; in addition, only foil-shaped current collectors can be used when making the electrode plate in this way, and a large amount of waste will be generated when the electrode plate is processed and formed , these wastes cannot be reused, and the material utilization rate is low

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0016] A water-based ion battery plate manufacturing process, including the selection steps: (1) mixing materials, adding 3.5g lithium manganate, 1gSP, 0.5g PTFE into the mixer, then adding 3g deionized water, stirring and mixing evenly; (2) Once rolling, transfer the uniformly mixed raw material powder to a rolling machine, and roll it into a sheet, with a rolling thickness of 2mm; (3) Drying, transfer the sheet to a drying oven for drying, and the drying temperature is 100°C , the drying time is 6 hours; the purpose of drying is to remove the moisture in the sheet, which can improve the compaction of the sheet and avoid sticking to the roll when the sheet is processed very thin; (4) Secondary rolling, the dried sheet The material is rolled again, and the rolling thickness is 0.1mm; the second rolling is to make the sheet into the required thickness and surface density; (5) punching, punching the rolled sheet into a diameter of 16mm disc; (6) Pressing, pressing the die-cut di...

Embodiment 2

[0018] A water-based ion battery plate manufacturing process, including the selection steps: (1) Mixing materials, adding 7g lithium iron phosphate, 1gSP, 1g KS-6, 1g PTFE into the stirrer, and then 8g deionized water, stirring and mixing (2) Once rolling, transfer the uniformly mixed raw material powder to a rolling machine, and roll it into a sheet, with a rolling thickness of 10mm; (3) Drying, transfer the sheet to a drying oven for drying, and the drying temperature 100°C, drying time 8 h; (4) Secondary rolling, rolling the dried sheet again, with a rolling thickness of 9mm; (5) Die-cutting, punching the rolled sheet into edges A square piece with a length of 40mm; (6) Pressing, pressing the punched square piece with a side length of 40mm and a square stainless steel strip with a side length of 40mm on a roller press, and adjusting the thickness to 9mm.

Embodiment 3

[0020] A water-based ion battery plate manufacturing process, which includes the selection steps: (1) mixing materials, adding 6g sodium titanium phosphate, 2gSP, 1.5g PTFE, 0.5g SBR into the stirrer, and then 3g deionized water, stirring and mixing (2) Once rolling, transfer the uniformly mixed raw material powder to a roller press, and roll it into a sheet, with a rolling thickness of 4mm; (3) Drying, transfer the sheet to a drying oven for drying, and the drying temperature 80°C, drying time 8 h; (4) secondary rolling, rolling the dried sheet again, the rolling thickness is 0.5mm; (5) punching, punching the rolled sheet into A disc with a diameter of 18mm; (6) Pressing, the die-cut disc with a diameter of 18mm and a titanium mesh with a diameter of 18mm are pressed together on a roller press, and the thickness is adjusted to 0.5mm.

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Abstract

The invention relates to a battery plate manufacturing process, in particular to a water-based ion battery plate manufacturing process. The water-based ion battery plate manufacturing process comprises the following steps: tableting a mixture of active substances, a conductive agent, a bonding agent and a solvent; then, laminating with a current collector to form a battery plate which is 0.1mm-100mm in thickness. The water-based ion battery plate manufacturing process has the advantages of less production equipment, simple process, high production efficiency, high material utilization rate, easiness in plate molding, and easiness in control of the surface density and the thickness, and the service life of a battery is prolonged effectively.

Description

technical field [0001] The invention relates to a manufacturing process of a battery polar plate, in particular to a manufacturing process of a water system ion battery polar plate. Background technique [0002] With the development of society, people pay more and more attention to the development of new energy. Solar energy, wind energy, water energy, tidal energy, etc. are non-polluting and inexhaustible. Most of these energy sources need to be converted into common electric energy for use, and batteries as energy storage elements have been extensively researched and developed. Currently commercialized batteries include lead-acid batteries, hydrogen-nickel batteries, iron-nickel batteries, cadmium-nickel batteries, and lithium-ion batteries. Lithium-ion batteries have the characteristics of high specific energy, high voltage, and long service life, but their cost is high, their safety is poor, and they are prone to explosion and fire. Lead-acid batteries and nickel-cadmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04
CPCH01M4/0435Y02E60/10
Inventor 靳文超王琳吴清国
Owner ZHEJIANG WELLY ENERGY CORP
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