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Vacuum paste mixing method of lead paste battery negative electrode lead paste

A technology for negative lead paste and lead storage battery, which is applied to lead-acid storage battery electrodes, lead-acid storage batteries, and lead-acid storage battery construction. , The effect that is beneficial to the battery performance

Active Publication Date: 2017-12-22
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems of uneven lead paste and paste and oxidation of free lead in the lead paste in the prior art, the present invention provides a vacuum paste method for the negative lead paste of the lead storage battery

Method used

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  • Vacuum paste mixing method of lead paste battery negative electrode lead paste
  • Vacuum paste mixing method of lead paste battery negative electrode lead paste
  • Vacuum paste mixing method of lead paste battery negative electrode lead paste

Examples

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Effect test

Embodiment 1

[0026] Lead paste formula: barium sulfate 900g, acetylene black 270g, fiber 85g, organic additive 500g, water 12.6kg (regular water 12kg, add 5% more water), sulfuric acid 8.5kg, lead powder 100kg.

[0027] And paste process:

[0028] (1) Add 100kg of lead powder and negative electrode paste additives (barium sulfate, acetylene black, fiber and organic additives) into the paste mixing machine for 240s;

[0029] (2) Add water, adjust the water adding angle valve to control adding 50% of the water within 20s, turn on the vacuum device and quickly add the remaining water, the vacuum time is controlled within 25s, and the total water adding time is within 45s;

[0030] (3) After adding water, perform wet mixing for 5 minutes, then suspend stirring and measure each part (upper middle, middle middle, lower middle, upper side, middle middle, lower side, where upper middle, middle middle, lower middle refer to respectively Sampling at the top, middle, and bottom of the lead paste and...

Embodiment 2

[0037] Lead paste formula: barium sulfate 900g, acetylene black 270g, fiber 85g, organic additive 500g, water 13.2kg (regular water volume 12kg, add 10% more water volume), sulfuric acid 8.5kg, lead powder 100kg.

[0038] And paste process:

[0039] (1) Add 100kg of lead powder and negative electrode paste additive into the paste mixer and dry mix for 240s;

[0040] (2) Add water, adjust the water adding angle valve to control adding 50% of the water within 20s, turn on the vacuum device and quickly add the remaining water, the vacuum time is controlled within 25s, and the total water adding time is within 45s;

[0041] (3) After adding water, carry out wet mixing for 5 minutes, then suspend stirring and measure the apparent density value of each part and calculate the overall standard deviation δ is 0.026 (Table 2). It is necessary to continue stirring until 15 minutes to measure and calculate the δ value to be 0.010. Think that the stirring is uniform and take a sample to t...

Embodiment 3

[0047] Lead paste formula: barium sulfate 900g, acetylene black 270g, fiber 85g, organic additive 500g, water 13.8kg (regular water 12kg, add 15% more water), sulfuric acid 8.5kg, lead powder 100kg.

[0048] And paste process:

[0049] (1) Add 100kg of lead powder and negative electrode paste additive into the paste mixer and dry mix for 240s;

[0050] (2) Add water, adjust the water adding angle valve to control adding 50% of the water within 20s, turn on the vacuum device and quickly add the remaining water, the vacuum time is controlled within 25s, and the total water adding time is within 45s;

[0051] (3) After adding water, carry out wet mixing for 5 minutes, then suspend stirring and measure the apparent density value of each part and calculate the overall standard deviation δ is 0.012 (Table 3), which means that the stirring is uniform and the free Pb content is tested by sampling (marked as A3), and then proceed to the next step;

[0052] (4) Acid addition, acid add...

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Abstract

The invention discloses a vacuum paste mixing method of lead paste battery negative electrode lead paste. The vacuum paste mixing method comprises: (1) adding lead powder and an additive into a paste mixing machine, and carrying out dry mixing; (2) adding an excess amount of water, and starting a vacuumizing device during the water adding; (3) carrying out wet mixing after completing the water adding; (4) adding an acid, carrying out acid mixing after completing the acid adding, and starting a dehumidifying device during the acid adding and / or acid mixing so as to discharge the excess water; and (5) detecting the apparent density of the mixture after the acid mixing, and completing the paste mixing process after achieving the standard. According to the present invention, the wet mixing is performed by adding the excess amount of water so as to uniformly stir the lead powder and the additive within the short time, and the pores possibly filled with the entering air in the raw material are filled with the water during the wet mixing due to the high water content, such that the contact between the raw material and the air can be reduced so as to effectively reduce the oxidation of the free lead and easily improve the performance of the battery.

Description

technical field [0001] The invention relates to the technical field of lead storage battery production, in particular to a vacuum paste method for the lead storage battery negative electrode paste. Background technique [0002] Lead-acid batteries have a history of more than 150 years and have been used in a wide range of fields. In recent years, electric vehicles have developed rapidly in my country due to their better mobility performance, lower storage space requirements and excellent price advantages. Thanks to this, the battery industry has also developed rapidly. [0003] Lead storage battery is a reversible DC power supply, which can convert chemical energy into electrical energy, and also convert electrical energy into chemical energy. Lead storage battery is mainly composed of electrolyte, tank cover and pole group. The electrolyte of lead storage battery is sulfuric acid solution. The pole group is mainly composed of positive plate, negative plate and separator. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/16H01M4/36H01M4/57H01M10/12
CPCH01M4/16H01M4/364H01M4/57H01M10/12Y02E60/10Y02P70/50
Inventor 李桂发郭志刚李雪辉孔鹤鹏邓成智刘玉崔海涛马铭泽毛书彦
Owner TIANNENG BATTERY GROUP