Lead-acid accumulator anode lead plaster

A lead-acid battery, positive lead paste technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the difficulty of taking into account the initial capacity and cycle life of the battery, affecting the battery's ability to accept charging, and increasing the internal resistance of the battery, etc. problems, to achieve the effect of improving the charging acceptance, improving the efficiency of the formation current, and improving the utilization rate

Inactive Publication Date: 2008-02-27
SHENZHEN SUNNYWAY BATTERY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The measures adopted are mainly to increase the initial performance of the battery by increasing the content of the conductive agent, binder, and fiber (the three are combined and used together) in the formula, and to increase the utilization rate of the active material by increasing the porosity to increase the battery life. The weight specific energy, and the addition of excessive binders and fibers seriously affects the charging acceptance of the battery, increases the internal resistance of the battery, and greatly shortens the service life of the battery
That is to say, it is difficult to balance the initial capacity and cycle life of the battery at the same time by directly adding conductive agents, binders, and fiber active ingredients to the formula.

Method used

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  • Lead-acid accumulator anode lead plaster

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Taking the conventional 6V4AH battery as the sample battery, two battery structures were used for orthogonal experiments. After the battery is made, test the 20h rate, the initial capacity of 3C, the specific energy by weight, and the cycle life according to the national standard of technical conditions for small valve-regulated sealed lead-acid batteries (GBT 19639.1-2005).

[0014] The battery is assembled with Z1.6A 2 positive and 3 negative structures, and the comparative lead paste formulas A1 to A3 are the three most common positive electrode lead paste formulas in current practical use. The percentages stated in the formulas A1 to A4 are all percentages by weight.

[0015] Formula A1: 100% lead powder, deionized water content is 11% of lead powder, 1.40g / cm 3 The sulfuric acid content is 10.5% of the lead powder, and the short fiber content is 0.05% of the lead powder.

[0016] Formula A2: 100% lead powder, deionized water content is 11.5% of lead powder, 1.40g...

Embodiment 2

[0033] Take each composition by weight percentage as follows:

[0034] 1. Lead powder 100%, 1.40g / cm 3 The sulfuric acid content is 12% of the lead powder, the deionized water content is 11% of the lead powder, the lead dioxide content is 4.2% of the lead powder, the short fiber content is 0.06% of the lead powder, and the carbon fiber content is 0.08% of the lead powder. The anisotropic graphite content is 0.4% of the lead powder, and the bismuth oxide content is 0.11% of the lead powder. Mix lead powder, lead dioxide, anisotropic graphite, short fiber, carbon fiber, and bismuth oxide into the paste mixing machine, stir for 5 minutes, then quickly add deionized water and stir evenly, then slowly add sulfuric acid and stir evenly, and prepare Lead paste is used to make 6V4AH batteries, marked as B1.

[0035] 2. Lead powder is 100%, 1.40g / cm3 sulfuric acid is 11% of lead powder content, deionized water is 10.5% of lead powder content, lead dioxide is 3.9% of lead powder conte...

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Abstract

This invention relates to the plus plate lead paste of lead-acid battery comprising (by weight percentages based on lead powder): lead powder 100%, 1.4g/cm3 sulfuric acid 8-12%, deionized water 9-11%, lead dioxide 3-4.2%, short fiber 0.05-0.06%, carbon fiber 0.10-0.15%, anisotropic graphite 0.2-0.4% and bismuth oxide 0.05-0.11%. In this invention, on the based on certain water and acid content in the active substance, additional positive pole active substances are added such as anisotropic graphite and bismuth oxide or the like. The changed components improve the primary battery volume and the ratio of weight/energy with prolonging battery service life.

Description

technical field [0001] The invention relates to a positive pole of a lead-acid storage battery. Background technique [0002] Since the UPS backup power supply has a very large market in the past 20 years, and the valve-regulated lead-acid battery itself has many favorable conditions such as relatively high voltage, low price, and maintenance-free use, it firmly occupies the leading position in this field. largest market share. Although China's valve-regulated lead-acid batteries have already firmly occupied the huge market share of lead-acid batteries in the world, they have not improved much in terms of service life compared with flooded batteries. The main reason is that the positive electrodes of these batteries are not well prepared. , The premature failure of the positive active material leads to a rapid decline in battery life. The impact of the positive electrode on battery life mainly comes from the positive electrode paste formulation. At present, the lead paste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/38H01M4/62
CPCY02E60/126Y02E60/10
Inventor 闫新华钟细进刘金刚贾化琦
Owner SHENZHEN SUNNYWAY BATTERY TECH
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