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Sealant for battery component, battery component and sealing method thereof

A technology for battery components and sealants, applied in battery pack parts, sealing materials, electrical components, etc., can solve the problems of unmentioned oxygen permeability of sealants, bonding strength to be improved, and failure to know solar cells. , to achieve long-term stable adhesion, low water vapor permeability and oxygen permeability, and maintain the effect of adhesion

Active Publication Date: 2020-12-04
BEIJING KMT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cured product of the silicone composition has good UV resistance and moisture resistance, its adhesive strength still needs to be improved
Moreover, the document does not mention the oxygen permeability of its sealant, so it is impossible to know whether the sealant can prevent the failure of solar cells caused by oxygen permeation

Method used

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  • Sealant for battery component, battery component and sealing method thereof
  • Sealant for battery component, battery component and sealing method thereof
  • Sealant for battery component, battery component and sealing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0135] Synthesis Example 1 Linear organopolysiloxane (A-1) of the present invention

[0136] In a 4L four-necked flask equipped with a stirrer, a thermometer, a condenser and a dropping funnel, add 130.08g (0.50mol) of 1,4-bis(dimethylmethoxysilyl)cyclohexane and 60.03g ( 0.50mol) of dimethyldimethoxysilane, and the temperature was raised to 50°C. Under stirring conditions, slowly dropwise add a mixed solution containing 1100g deionized water and 15g hydrochloric acid (concentration: 5N) into the flask, then slowly add 8.51g (0.05mol) cyclohexenyl dimethyl methoxy base silane. After the dropwise addition, the inner temperature of the flask was maintained at 50° C., and the reaction was continued for 4 hours under stirring. The reaction product was left standing to separate the layers, the water phase was separated, and the collected organic phase was washed with water until neutral. Sodium sulfate was added to the organic phase washed with water for drying, and the sodium...

Synthetic example 2

[0138] Synthesis Example 2 Straight-chain organohydrogenpolysiloxane (B-1) according to the present invention

[0139] Place a 4L four-necked flask equipped with a stirrer, a thermometer, a condenser and a dropping funnel in an ice bath, and add 104.06g (0.40mol) of 1,4-bis(dimethylmethoxysilyl) to the flask Cyclohexane and 31.82 g (0.30 mol) methyldimethoxysilane. Under stirring conditions, a mixed solution containing 800 g of deionized water and 12 g of hydrochloric acid was slowly added dropwise into the flask, and then 5.20 g (0.05 mol) of trimethylmethoxysilane was slowly added dropwise into the flask. After the dropwise addition, the inner temperature of the flask was maintained below 5°C, and the reaction was continued for 4 hours under stirring conditions. The reaction product was left standing to separate the layers, the water phase was separated, and the collected organic phase was washed with water until neutral. Sodium sulfate was added to the organic phase was...

Synthetic example 3

[0141] Synthesis Example 3 Branched-chain organohydrogenpolysiloxane (C-1) of the present invention

[0142] Place a 4L four-neck flask equipped with a stirrer, thermometer, condenser and dropping funnel in an ice bath, and add 116.86g (292.15 0.40mol) of 1,4-bis(methyldimethoxysilyl) to the flask ) cyclohexane and 14.75 g (134.060.11 mol) tetramethyldisiloxane. Under the condition of stirring, slowly dropwise add the mixed solution containing 500g deionized water and 6g hydrochloric acid (concentration is 5N) in the flask. After the dropwise addition, the inner temperature of the flask was maintained below 5°C, and the reaction was continued for 4 hours under stirring conditions. The reaction product was left standing to separate the layers, the water phase was separated, and the collected organic phase was washed with water until neutral. Sodium sulfate was added to the organic phase washed with water for drying, and the sodium sulfate was filtered off after drying. The...

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Abstract

The invention provides a sealant for battery components, a battery component and a sealing method thereof. The sealant for battery components of the present invention includes straight-chain organopolysiloxane, linear organohydrogenpolysiloxane and branched-chain organohydrogenpolysiloxane having a cyclohexylene skeleton. Hydrosilylation reactions between atom-bonded cyclohexenyl groups and silicon-bonded hydrogen atoms for addition curing; A trialkoxysilyl group bonded by a cyclohexylene group. Due to the combined use of the components, the sealant for battery components of the present invention has low yellowing resistance, water vapor permeability and oxygen permeability of the cured layer, and can protect the battery in high temperature, high humidity and ultraviolet environment. Components maintain long-term stable adhesion.

Description

technical field [0001] The present invention relates to a sealant for battery components, a battery component comprising a cured layer thereof, and a method of sealing a battery component using the same. Background technique [0002] At present, solar cells that use solar radiation as an energy source are attracting increasing attention. In order to generate a higher voltage and avoid the influence of the external environment, a sealant is usually used to seal the electrically connected multi-piece solar cells between the light-receiving surface protection layer and the backlight surface protection layer to form a solar cell module. Commonly used sealants for solar cell modules are mainly EVA-based sealants and silicone-based sealants. Among them, silicone-based sealants are more widely used in the field of solar cell sealing because they do not cause corrosion of solar cell electrodes due to the generation of acetic acid by EVA-based sealants in hot and humid environments....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/06H01M2/08H01M50/193
CPCC09J11/06C09J183/04C08L2203/204C08L2205/025C08L2205/03H01M50/183C08L83/04C08K5/5419C08K5/5425Y02E60/10
Inventor 马静李振忠邓祚主
Owner BEIJING KMT TECH
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