Frequency-controlled lead acid storage battery

A lead-acid battery, lead powder technology, applied in lead-acid batteries, lead-acid battery electrodes, battery electrodes and other directions, can solve the problems of shortening battery life, little effect, loss of initial battery capacity, etc. The effect of increasing initial capacity and improving quality

Inactive Publication Date: 2012-07-11
SHENZHEN GREENLAND ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) Most of the active substances are dissolved substances, which make the active substances soften and collapse prematurely, losing the initial capacity of the battery and shortening the service life of the battery
[0008] In order to improve the performance of the positive electrode of the lead-acid battery and prolong the service life of the battery, people have long paid attention to the influence of positive electrode additives on the utilization rate of the positive electrode active material, for example, adding carbon fiber, anisotropic graphite and acetylene to improve the performance of the positive electrode Electric carbon materials such as carbon black, but none of them have achieved the expected effect of extending battery life
This is mainly because the positive active material PbO 2 The strong oxidation and the anode potential of the battery in the charging state make these carbon additives gradually oxidize and fail during the battery cycle. It is still difficult to find a stable substance resistant to this kind of anode potential oxidation, so that by looking for conductive carbon Attempts to extend battery life with elemental additives have had little success

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Co-deposition preparation of positive composite rare earth oxide additives:

[0023] The rare earth metal chloride (RECl 3 ·6H 2 O) (RE is Gd in lanthanide rare earth elements) and group X metal chloride MCl 3 (M is Sb in group X metal elements) according to the weight percentage corresponding to its oxide (ie RECl 3 ·6H 2 O:MCl 3 =5:95) was dissolved in absolute ethanol, and slowly added to a high-speed stirred excess sodium hydroxide solution to obtain coprecipitated hydroxide. The precipitate is filtered, washed to be free of Cl-, dried, dehydrated and refined to obtain the desired co-precipitated composite oxide. The product is ground and passed through a 500-mesh sieve. Then mix and grind with 10 times of lead powder, evenly disperse and mix evenly, pass through a 500-mesh sieve and store in a drying device to obtain the positive electrode composite oxide additive used in the paste. Note that in the metering process for preparing the lead paste, the added 10...

Embodiment 2

[0025] Gd is used for RE, Bi is used for M, the mass ratio of the two oxides is 9:91, and then mixed and ground with 20 times the amount of lead powder, and the rest of the steps are the same as in Example 1 to obtain a composite oxide additive.

Embodiment 3

[0027] Take by weighing 100 kilograms of lead powders, add the compound oxide additive that weight is made in the embodiment 1 or embodiment 2 of 0.1 kg respectively (note that the lead powder weight in the additive is included in the lead powder weight of 100 kilograms). Stir the additives and lead powder in the paste mixer well, add 7.5kg of deionized water containing a small amount of short fibers, stir and make a "water-containing lead paste", and then slowly add it with a density of 1.35g / cm 3 9.5kg of dilute sulfuric acid, while stirring, expand to form a uniform lead paste.

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Abstract

The invention discloses a frequency-controlled lead acid storage battery comprising an anode and a cathode. The anode contains an additive comprising 4-6% of a rare-earth metal oxide by mass and 94-96% of an X-family metal oxide by mass. The amount of the additive takes 0.03-0.8% of the mass of lead powder in anode lead plaster. The rare-earth oxide is a lanthanum-series rare-earth metal oxide. According to the invention, the additive is added into the lead powder, and the mixture is mixed with dilute sulfuric acid with a density of 1.35-1.40g / cm<3> and deionized water containing polymer fiber; the mixture is well mixed into the lead plaster; the lead plaster is applied on the slab lattice of the anode; the lead plaster is cured and dried, such that an anode plate is obtained. With the method, the conductivity of a reaction product PdSO4 is improved, blockage between the electrode pores is effectively prevented, premature softening and falling of an active substance are inhibited, discharging capacity of the lead acid battery is effectively improved, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a valve-regulated lead-acid battery, which belongs to the technical field of quantum new energy, and more precisely, relates to a battery whose positive electrode contains a composite oxide additive. Background technique [0002] In recent years, with the depletion of natural energy and development restrictions, the development of transportation has been severely restricted, coupled with environmental factors such as pollution and emissions, people have a strong interest in all-round electric vehicles. Electric vehicles are gradually replacing fuel vehicles with serious pollution emissions, which is of great significance to the prevention of environmental pollution and the conservation of natural energy, and it is also one of the problems that urban citizens generally care about and need to be solved urgently. [0003] At present, the market trend of all-round electric vehicles is very obvious. To obtain the wide-scale populari...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M10/06H01M4/20
CPCY02E60/126Y02E60/10
Inventor 梁世进冯星民
Owner SHENZHEN GREENLAND ENVIRONMENT TECH
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