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Cutting and crushing method used for flexible-package power lithium battery

A crushing method, lithium battery technology, applied in battery recycling, recycling technology, recycling by waste collectors, etc., can solve problems not specifically related to shearing and crushing methods, so as to save batch processing time, reduce dissolution, and improve extraction purity Effect

Active Publication Date: 2014-01-08
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent applications CN102903985A (application number 201210406015.9), CN102891345A (application number 201210404254.0), CN102208706A (application number 201110113139.3) etc. disclose the recovery of the active material of the positive electrode material of the power battery. After shearing and crushing the waste lithium-ion batteries in the water system, they are treated with deionized water, but none of them specifically involve the shearing and crushing method

Method used

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  • Cutting and crushing method used for flexible-package power lithium battery
  • Cutting and crushing method used for flexible-package power lithium battery
  • Cutting and crushing method used for flexible-package power lithium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 , The mechanical cutting equipment 1 is a manual all stainless steel knife mechanical cutting equipment, the blade 2 is about 1 meter long, close to both sides of the knife wall, four air guide pipes 3 are arranged on each side, and the inert gas is output by the gas supply device 4 . The battery is crushed according to the following steps: ① Manually rotate the turntable 5 to lift the blade, start the gas supply device 4, introduce inert gas nitrogen, and the gas output pressure is controlled at 500kPa; ②After 10 minutes of nitrogen output, manually rotate the turntable 5 to drop the blade, cut A soft-packed ternary power lithium battery is bonded on both sides, peel off the shell, and take out the battery core; ③ Manually rotate the turntable 5 to lift the blade 2, and slowly push it in parallel for 1 cm along one side of the battery cell, and manually rotate the turntable 5 Drop the blade, cut, and cut the battery into 1cm-wide rectangular strips. Co...

Embodiment 2

[0022] Such as figure 2 , the mechanical cutting equipment 1 is an automatic mechanical cutting equipment, equipped with a blade 2, the blade 2 is an inlaid alloy steel knife, and the protective cover 6 is set on both sides of the blade 2, and three lithium iron phosphate soft pack batteries are put in through the opening 7, neatly stack. Break the battery according to the following steps: ①Start the automatic mechanical cutting equipment and gas supply device 4, introduce inert gas argon, and control the gas output pressure at 5000kPa; At the bonding place, peel off the outer shell separately, take out the battery core, and stack them neatly again; ③The three battery cores are neatly stacked, and slowly advance in parallel along one side of the battery core, and cut each time 8cm, and cut the battery into 8cm wide Rectangular strips, keep the original shape of the battery core during the advancing process, and the rectangular strips will not be scattered; ④ Replace the batt...

Embodiment 3

[0024] Such as image 3 , the mechanical cutting equipment 1 is an automatic mechanical cutting equipment, the automatic mechanical cutting equipment is put into the isolation room 8 as a whole, and the inert gas is supplied to the isolation room 8 by the gas supply device 4 . The battery is crushed according to the following steps: ①Start the mechanical cutting equipment 1 and the gas supply device 4, introduce the inert gas helium, and control the gas output pressure at 10000kPa; , put it through the opening 7, stack it neatly, start to cut off the joints on the adjacent two sides of the six lithium manganese oxide soft pack batteries, peel off the shells respectively, take out the battery cores, and stack them neatly again; ③ Along one side of the battery cores, Slowly advance in parallel, and cut the battery into 15cm-wide rectangular strips every 15cm. During the advancing process, keep the original shape of the battery core and the strips will not be scattered; ④ Replace...

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Abstract

The invention discloses a cutting and crushing method used for a flexible-package power lithium battery. The cutting and crushing method comprises the following steps: (1), starting a mechanical cutting device which is provided with an inert gas protective device, and ventilating an inert gas, wherein output pressure of the inert gas is 500 kPa-10000 kPa; (2), cutting off bonding positions at adjacent two sides of the flexible-package battery after outputting the inert gas for 10 minutes-30 minutes, peeling off an enclosure and getting out a battery cell; (3), cutting the battery after slowly advancing by 1 cm-5 cm in parallel along one side of the battery cell to form 1 cm-15 cm rectangular strips, keeping the original shape of the battery cell in the advancing process and keeping the rectangular strips to not scatter; and (4), integrally exchanging the battery to a position vertical to the cutting direction in the step (3), slowly advancing by 1 cm-15 cm, and cutting the battery into rectangular fragments. According to the cutting and crushing method used for the flexible-package power lithium battery, disclosed by the invention, inert gas protection is adopted, discharging pre-processing is not needed, batch processing time is saved, and therefore, the cutting and crushing method is safer.

Description

technical field [0001] The content of the present invention belongs to the technical field of waste battery recycling and processing, and in particular relates to a cutting and crushing pretreatment method for soft pack power lithium batteries. Background technique [0002] With the promotion and use of electric vehicles, there are more and more scrapped power batteries; the ensuing problem is the recycling and disposal of used power batteries. Power batteries for electric vehicles contain metal materials such as lead, nickel, cobalt, and lithium and electrolytes. Therefore, waste power batteries are a valuable urban mineral. Once the discarded batteries cannot be effectively recycled, it will not only cause a waste of resources, but also cause certain pollution to the environment. Therefore, waste power batteries must be recycled. [0003] Power batteries are classified into steel shells, aluminum shells, aluminum-plastic soft shells, etc. according to shell materials, an...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCY02E60/12Y02W30/84H01M10/54
Inventor 何睦王锋超唐国鹏李东梅赵光金
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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