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Storage battery pole sealing method

A battery and pole technology, which is applied in the field of battery pole sealing, can solve problems such as liquid leakage, accidents, and electrical insulation failure, and achieve the effects of simple process, liquid leakage prevention, and improved liquid tightness

Inactive Publication Date: 2019-03-01
JIANGSU JINYI NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the through hole of the shell cover where the pole is inserted is not completely sealed, the electrolyte crawling on the surface of the battery pole will leak out of the battery along the battery pole during long-term use or storage of the battery, resulting in leakage. Accidents due to electrical insulation failure
[0004] At present, the sealing between the battery pole and the case cover is generally achieved by filling the gap between the pole and the case cover with a suitable sealant to achieve the sealing effect, but the sealant has a high viscosity, and its coating and filling bring a lot of pressure to the production process. Inconvenient, and the battery is prone to failure after long-term use and high and low temperature storage

Method used

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  • Storage battery pole sealing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (Embodiment 1): The present embodiment will be described with reference to packaging as a pole of a lithium ion storage battery.

[0024] A. Positive sheet production

[0025] The positive electrode material is scaled (LiCoO 2 :Super P:PVDF=93:4:3), mixed with NMP (NMP: weight of solid matter=810:1500), and the viscosity of the positive electrode slurry was controlled at 6000cps. The positive electrode slurry is evenly coated on the surface of the aluminum foil, and the positive electrode sheet is made by drying, rolling, and cutting to the designed process parameters.

[0026] B. Negative sheet production

[0027] Mix the negative electrode material in proportion (C:Super P:SBR:CMC=94:1:2.5:2.5), and mix with H 2 O(H 2 O: weight of solid matter=1600:1420) for mixing and stirring, and the viscosity of the negative electrode slurry is controlled at 5000-6000 cps. The negative electrode slurry is evenly coated on the surface of the copper foil, and the negative elect...

Embodiment 2

[0045] (Embodiment 2): This embodiment will be described with reference to the post package as a nickel-metal hydride storage battery.

[0046] A. Positive sheet production

[0047] The positive electrode material is mixed and stirred according to the ratio (nickel hydroxide:CoO:PTFE:HPMC=50:5:2:9), and the viscosity of the positive electrode slurry is controlled at 10000cps-12000cps. The positive electrode slurry is evenly coated on the surface of nickel foam, and the positive electrode sheet is made by drying, rolling, and cutting to the designed process parameters.

[0048] B. Negative sheet production

[0049] The negative electrode material is mixed and stirred according to the ratio (MH:acetylene black:PTFE:CMC=50:1:1:8), and the viscosity of the negative electrode slurry is controlled at 15000cps-16000cps. The negative electrode slurry is evenly coated on the surface of the perforated nickel-plated steel strip, and the negative electrode sheet is made by drying, rolli...

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Abstract

The invention relates to a storage battery pole sealing method. By the storage battery pole sealing method, a pole (01) and a shell cover (02) are sealed through a sealing sleeve (04); the storage battery pole (01) is shaped like a bolt, and the cross section of a tail end (09) is larger than that of a pole body; a through hole in the battery shell cover is welded to a hollow cylinder (03) in a sealed manner through argon arc or laser, and the hole diameter of the hollow cylinder (03) is larger than the outer diameter of the pole and smaller than the outer diameter of the section of the tail end (09) of the pole; the pole (01) is inserted into the cylindrical through hole in the battery shell cover, then the sealing sleeve (04), an insulating gasket (05), an insulating washer (06) and a metal washer (07) are sequentially assembled and compressed on the pole, and the sealing sleeve (04) is compressed by a compressive locking nut (08) to seal the pole (01) and the through hole, so that aliquid sealing effect is achieved.

Description

technical field [0001] The invention relates to the field of chemical power sources, in particular to a method for sealing battery poles. Background technique [0002] In recent years, secondary batteries represented by lithium-ion batteries, nickel-metal hydride batteries and lead-acid batteries have a wide range of uses because they can be charged for multiple cycles, and are widely used in consumer electronics, electric vehicles, power tools, energy storage and other fields. promotion and use. The shape of the battery is designed as cylindrical and square according to the application, wherein in the square battery there are poles connecting the inside and outside of the battery case. [0003] There are electrolytes in the batteries. Lithium-ion batteries use organic electrolytes, nickel-metal hydride batteries use alkaline electrolytes, and lead-acid batteries use acidic electrolytes. Because these electrolytes are liquid, they are in the battery case. Will crawl on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/08H01M2/30H01M2/06H01M10/0525H01M50/172H01M50/184H01M50/188H01M50/547
CPCH01M10/0525H01M50/183H01M50/172H01M50/543Y02E60/10
Inventor 秦学吕军王丽陶蕾周琴
Owner JIANGSU JINYI NEW ENERGY TECH CO LTD
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