Battery liquid-filling device

A liquid injection device and battery technology, which is applied to battery components, circuits, electrical components, etc., can solve the problems affecting the time and degree of liquid injection, high production costs, and the volume of the drying box is unfavorable for large-scale production.

Inactive Publication Date: 2011-10-05
NANJING SHUANGDENG SCI TECH DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic electrolyte injection of existing supercapacitors and lithium batteries is generally carried out in a drying box, drying room or glove box with a metering pump and a liquid injection pipe. No air extraction is performed before and after liquid injection, which cannot guarantee the discharge of gas and affects the quality of the battery. Affect the time and degree of liquid injection, and the small size of the drying box is not conducive to large-scale production, and the production cost of the drying room or glove box is relatively high

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0010] Referring to the accompanying drawings, the air suction pump 8, the suction pipe 12, the buffer bottle 7, the air suction pipe 10, the liquid injection pipe 11, and the precision metering pump 1 are sequentially sealed and connected. There are suction electromagnetic valve 4 and filter sheet 5, and there is a secondary filter sheet 6 at the mouth of the buffer bottle. Prepare the battery electrolyte that needs to be used and the battery 9 that needs to be injected. After connecting the battery electrolyte to the precision metering pump 1, insert the liquid injection pipe 11 into the battery liquid injection hole, and seal it with the sealing ring 2. The material is PP, close the liquid inlet solenoid valve 3, open the suction solenoid valve 4, turn on the suction pump 8, and pump the battery 9 that needs liquid injection through the suction pipe 12 and the suction pipe 10 to form a negative pressure in the battery 9 , close the suction solenoid valve 4, turn on the prec...

Embodiment 2

[0012] In this example, the material of the filter is polypropylene, the pore size is 30 μm, and the porosity is 70%, the material of the liquid injection tube is stainless steel, and the rest are the same as Example 1.

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Abstract

The invention discloses a battery liquid-filling device. The battery liquid-filling device is structurally characterized in that: an air extracting pump is sequentially and hermetically connected with an air suction pipe, a buffer bottle, an air extracting pipe, a liquid-filling pipe and a metering pump; the liquid-filling pipe is provided with an electromagnetic valve; the air extracting pipe is provided with an electromagnetic valve and a filter sheet; the neck of the buffer bottle is provided with a secondary filter sheet; and both the filter sheet and the secondary filter sheet are polytetrafluoroethylene or polypropylene porous filter sheets, the aperture is 2 to 60 microns, and the porosity is 70 to 85 percent. The device is simple in structure, convenient to operate and low in cost, is used for filling electrolyte for a lithium battery and a super capacitor, and can timely and fully discharge the gas in the battery so as to prevent the battery from swelling, shorten the liquid-filling time and improve the liquid-filling precision; and the device can be reused for a long term, and is economic and practical.

Description

technical field [0001] The invention relates to a battery liquid injection device, which is used for injecting electrolyte solution into a battery case. Background technique [0002] Organic supercapacitors and lithium batteries are very important to control water and gas during the process of injecting electrolyte, otherwise the battery will bulge, which will seriously affect the performance and life of the battery. The organic electrolyte injection of existing supercapacitors and lithium batteries is generally carried out in a drying box, drying room or glove box with a metering pump and a liquid injection pipe. No air extraction is performed before and after liquid injection, which cannot guarantee the discharge of gas and affects the quality of the battery. It affects the time and degree of liquid injection, and the small size of the drying box is not conducive to large-scale production, and the production cost of the drying room or glove box is relatively high. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/36
CPCY02E60/12Y02E60/10
Inventor 凌付冬张明苏迎东张华陈冰花
Owner NANJING SHUANGDENG SCI TECH DEV RES INST
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