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Cleaning method for lithium ion battery electrolyte packing barrel

A lithium-ion battery, packaging barrel technology, applied in cleaning methods and utensils, chemical instruments and methods, cleaning hollow objects, etc., to achieve the effect of saving energy, saving cleaning resources, and convenient operation

Inactive Publication Date: 2016-08-17
TIANJIN JINNIU POWER SOURCES MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And in order to make the packaging barrel reach the purpose of recycling, its cleaning technology has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] When cleaning, first use a stainless steel hose with quick connectors at both ends to drain the residual liquid in the packaging barrel, use a special quick connector to release the residual pressure in the barrel, and use an air wrench to unscrew the fastening screw on the top flange of the packaging barrel to remove the seal. flange. Put 10 packaging barrels upside down on the rotary cleaning nozzle, start the spray booster water pump, spray with tap water for 10 minutes, and distilled water for 1 minute. Tighten the screws, and then use nitrogen with a dew point of -30°C, a purity of 99.5%, and a temperature of 10°C to enter through the inlet of the packaging barrel, and to exit the outlet. After blowing for 20 hours, turn off the gas source to complete the operation. Use a dew point meter to detect the dew point in the packaging barrel as -29.7°C.

Embodiment 2

[0024] When cleaning, the new packaging barrel can save the remaining steps of exporting, directly put 10 packaging barrels upside down on the rotary cleaning nozzle, start the spray booster water pump, spray with tap water for 20 minutes, spray with distilled water for 2 minutes, and control the water for 2 hours Finally, erect the packaging drum, straighten the flange cover, tighten the fastening screws, and then use nitrogen gas with a dew point of -40°C, a purity of 99.9%, and a temperature of 20°C to enter through the inlet of the packaging drum and out through the vent port. , turn off the gas source after blowing for 12 hours to complete the operation. Use a dew point meter to detect the dew point in the packaging barrel as -35.2°C.

Embodiment 3

[0026] When cleaning, first use a stainless steel hose with quick connectors at both ends to drain the residual liquid in the packaging barrel, use a special quick connector to release the residual pressure in the barrel, and use an air wrench to unscrew the fastening screw on the top flange of the packaging barrel to remove the seal. flange. Put 10 packaging barrels upside down on the rotary cleaning nozzle, start the spray booster water pump, spray with tap water for 30 minutes, spray with distilled water for 5 minutes, and control the water for 3 hours. Tighten the screws, and then use nitrogen with a dew point of -50°C, a purity of 99.9%, and a temperature of 30°C to enter through the inlet of the packaging barrel, and to exit the outlet. After blowing for 6 hours, turn off the gas source to complete the operation. The dew point in the packaging barrel was detected as -39.4°C with a dew point meter.

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Abstract

The invention provides a cleaning method for a lithium ion battery electrolyte packing barrel. The cleaning method is characterized by comprising the following steps and processes of residual liquid collection, cover opening, cleaning, water controlling, cover tightening and drying. According to the cleaning method for the lithium ion battery electrolyte packing barrel, compared with an original airtight solvent cleaning method or an open tap water flushing method, the cleaning method provided by the invention has obvious advantages, firstly, in the spray cleaning mode aspect, flushing is replaced with spray cleaning, and the waste of a large amount of solvent or tap water is avoided, so that clean resources are saved; secondly, due to the fact that magnetic filters are installed on all spray cleaning liquid paths and drying gas paths, the very taboo magnetic foreign body problem in the lithium electricity industry is solved; and finally, the time setting and automatic switching technology is adopted, one-key control in the spray cleaning process is achieved by staff, operation is convenient, and a dew point control scheme is adopted in the blowing, discharging and drying processes, so that not only is drying of the packing barrel ensured, but also energy is saved.

Description

[0001] technical field [0002] The invention relates to equipment cleaning technology, in particular to a cleaning method for an electrolyte packaging barrel for a lithium ion battery. Background technique [0003] Due to the advantages of high working voltage, high energy density (light weight), low self-discharge rate, no memory effect, and long cycle life, lithium-ion batteries have developed rapidly since they were put on the market, and have gradually replaced nickel-metal hydride batteries. The field of mobile electronic terminal equipment such as mobile phones and camcorders occupies a dominant position. In recent years, relying on its own comprehensive advantages, it is entering a larger industrial group - the field of power batteries. [0004] The rapid development of lithium-ion batteries has driven the development of related battery materials. Electrolyte is one of the four key materials of lithium-ion batteries. Known as the "blood" of lithium-ion batteries, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/28
Inventor 桑俊利赵庆云王巧娟王卫华
Owner TIANJIN JINNIU POWER SOURCES MATERIAL
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