Main gate electrode for double-sided battery imbricate assembly

A double-sided battery and busbar electrode technology, applied in the field of electrodes, can solve the problems of unsolvable technical problems, reduced open voltage, large silver consumption, etc., and achieves perfect conductive phase network contact, high conversion efficiency, and reduced fragmentation rate. Effect

Pending Publication Date: 2021-12-03
JIANGSU ZHENGNENG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional shingled component process, after the battery electrode aluminum paste, back silver, main grid, and front silver are printed and sintered, the battery is cut, and the shingled conductive adhesive is pasted on the main grid electrode using the printing process. After drying and curing, the Battery bonding; this design has the following defects: 1. Shingled conductive adhesive is used on the main grid, which consumes a lot of silver. The single consumption of the main grid is 20-30mg.
2. The thickness of the battery is 160 dimensional density, and the thickness of the conductive agent superimposed on the main grid is 20-40 μm thick, resulting in a high fragmentation rate
3. In the main grid area of ​​the battery printing, there will be minority carrier recombination after sintering, resulting in a decrease in opening voltage
[0003] The patent with the application number CN202010489313.3 discloses a silver paste for the front busb

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] A double-sided battery supermoder assembly, a main grid electrode including the following weight components: 3% sheet powder, 65% of the powder powder, 2% of the thermosetting acrylic resin; the curing agent: 0.5% silicone oil 0.5%, dispersant 0.2%, touch The decoder was 0.1%; the active solvent 2%.

[0033] A double-sided battery supermoder assembly is used for the main grid electrode, and the preparation method of the slurry is as follows:

[0034] S1, the powder, ball, thermoset acrylic resin, silicone oil, dispersant, thixotropic and active solvent are put into double planet vacuum mixer;

[0035] Take powder particle diameter D10 1.0 μm, D50 1.4 μm, D90 2.5 μm specific surface area 0.7m 2 / kg, the burnt value is 0.5%, the resonance density is 4.5 g / ml.

[0036] Ball silver powder particle diameter D10 0.4 μm, D50 0.5 μm, D90 1.1 μm specific surface area 0.9m 2 / kg, the burning value is 0.7%, and the density of the vibration density is 3 g / ml.

...

Example Embodiment

[0042] Example 2

[0043] A main grid electrode for double-sided battery supermoder assemblies, including the following weight components: 23.45% sheet powder, 66% of the powder powder, 4% of the thermosetting acrylic resin, 1% of the hydrided bisphenol F resin; curing agent: 0.75% silicone oil 1 %, Dispersant 0.4%, thixotropic agent 0.4%; active solvent 3%.

[0044] A double-sided battery supermoder assembly is used for the main grid electrode, and the preparation method of the slurry is as follows:

[0045] S1, the powder, the powder, the thermoset acrylic resin, the hydride bisphenol F resin, the silicone oil, the dispersant, the thixotropic agent, and the active solvent are proportionally to the double planet vacuum mixer;

[0046] The powder particle size D10 1.1 μm, D50 1.5μm, D90 2.7 μm specific surface area 0.9m 2 / kg, the burnt value is 0.7%, the resonance density is 5.5 g / ml.

[0047] Ball silver powder particle diameter D10 0.5 μm, D50 0.6 μm, D90 1.2 μm specific sur...

Example Embodiment

[0053] Example 3

[0054] A double-sided battery supermoder assembly, including the following weight component: 20.2% sheet powder, 64% of the powder powder, 6% of the thermoset acrylic resin, 2% of the hydrogenated bisphenol F resin; 1% silicone oil 1.5 %, Dispersant 0.6%, thixotropic agent 0.7%; active solvent 4%.

[0055] A double-sided battery supermoder assembly is used for the main grid electrode, and the preparation method of the slurry is as follows:

[0056] S1, the powder, the powder, the thermoset acrylic resin, the hydride bisphenol F resin, the silicone oil, the dispersant, the thixotropic agent, and the active solvent are proportionally to the double planet vacuum mixer;

[0057] The particle diameter D10 1.3 μm, D50 1.7 μm, D90 3.0 μm specific surface area 1.1m 2 / kg, the burning value is 0.9%, the resonance density is 6.0 g / ml.

[0058] Ball silver powder particle size D10 0.7 μm, D500.8 μm, D90 1.4 μm specific surface area 1.4 m2 / kg, the burning value of 1.0%...

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PUM

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Abstract

The invention discloses a main gate electrode for a double-sided battery imbricate assembly, and relates to the field of electrodes. The main gate electrode comprises the following components in percentage by weight: 20-30% of flake powder, 60-72% of ball powder, 2-6% of thermosetting acrylic resin and 0-2% of hydrogenated bisphenol F resin, the curing agent comprises 0.5 to 1 percent of silicone oil, 0.2 to 0.6 percent of dispersing agent and 0.1 to 0.7 percent of thixotropic agent; and 2-4% of an active solvent. According to the main gate electrode for the double-sided battery imbricate assembly, the cost of the assembly battery can be reduced, the fragmentation rate of the imbricate assembly is reduced. Meanwhile, minority carrier recombination does not exist in the main gate area of the battery, and the conversion efficiency of the battery is improved.

Description

technical field [0001] The invention belongs to the field of electrodes, and in particular relates to a main grid electrode for a double-sided battery shingled assembly. Background technique [0002] In the traditional shingled component process, after the battery electrode aluminum paste, back silver, main grid, and front silver are printed and sintered, the battery is cut, and the shingled conductive adhesive is pasted on the main grid electrode using the printing process. After drying and curing, the Battery bonding; this design has the following defects: 1. The shingled conductive adhesive is used on the main grid, which consumes a lot of silver. The single consumption of the main grid is 20-30mg. 2. The thickness of the battery is 160 dimensional density, and the thickness of the conductive agent superimposed on the main grid is 20-40 μm thick, resulting in a high fragmentation rate. 3. In the main grid area of ​​the battery printing, there will be minority carrier rec...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B13/00H01L31/0224
CPCH01B1/22H01B13/00H01L31/022425H01L31/022433
Inventor 冷青松张群丰昭李鹏刘瑞鸿
Owner JIANGSU ZHENGNENG ELECTRONICS TECH CO LTD
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