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Lead storage battery capable of overcoming early capacity attenuation and preparation method thereof

A lead-acid battery and capacity decay technology, applied in the field of lead-acid battery and its preparation to overcome the early capacity decay of lead-calcium alloy batteries, can solve the problems of easy decay of early capacity and the like, and meet the requirements of maintenance-free, reduced migration, and no increase in water loss rate. Effect

Active Publication Date: 2019-10-22
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a preparation method of a lead-acid storage battery that overcomes early capacity attenuation, to solve the problem that the early capacity is easy to attenuate due to the preferential discharge of the grid corrosion layer in the prior art lead-calcium alloy battery

Method used

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  • Lead storage battery capable of overcoming early capacity attenuation and preparation method thereof
  • Lead storage battery capable of overcoming early capacity attenuation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Preparation of transition layer paste

[0037] Add 100Kg of lead powder, 70g of fiber and 1Kg of Sb to a common paste machine 2 o 3 , dry mix for 5 minutes, add 18Kg of water, stir for 5 minutes after adding water, then add 9.6Kg of 1.4 sulfuric acid, control the speed of acid addition, finish adding within 15 minutes, and stir for 3 minutes after adding acid to form Sb 2 o 3 A paste with a content of about 0.8% and an apparent specific gravity of 3.7.

[0038] 2. Formation of transition layer

[0039] The lead-calcium alloy grid of the 20Ah battery is immersed in the paste for 5 minutes, and the surface of the grid is coated with a brush, and the weight of the paste is controlled to be 10% of the total amount of the paste.

[0040] 3. Production of positive electrode paste

[0041] Add 100Kg of lead powder, 70g of fiber and 0.1Kg of Sb to a common paste machine 2 o 3 and 0.1Kg of SnSO 4 , dry mix for 5 minutes, add 12Kg of water, add water for 5 minutes, the...

Embodiment 2

[0051] 1. Preparation of transition layer paste

[0052] Add 100Kg of lead powder, 70g of fiber and 1Kg of Sb to a common paste machine 2 o 3 , dry mix for 5 minutes, add 18Kg of water, stir for 5 minutes after adding water, then add 9.6Kg of 1.4 sulfuric acid, control the speed of acid addition, finish adding within 15 minutes, and stir for 3 minutes after adding acid to form Sb 2 o 3 A paste with a content of about 0.8% and an apparent specific gravity of 3.7.

[0053] 2. Formation of transition layer

[0054] The lead-calcium alloy grid of the 20Ah battery is immersed in the paste for 5 minutes, and the surface of the grid is coated with a brush, and the content of the paste is controlled at 10% of the total amount of paste.

[0055] 3. Production of positive electrode paste

[0056] Add 100Kg of lead powder, 70g of fiber and 0.1Kg of Sb to a common paste machine 2 o 3 and 0.1Kg of SnSO 4 , dry mix for 5 minutes, add 12Kg of water, add water for 5 minutes, then add ...

Embodiment 3

[0066] 1. Preparation of transition layer paste

[0067] Add 100Kg of lead powder, 70g of fiber and 1Kg of Sb to a common paste machine 2 o 3 , dry mix for 5 minutes, add 18Kg of water, stir for 5 minutes after adding water, then add 9.6Kg of 1.4 sulfuric acid, control the speed of acid addition, finish adding within 15 minutes, and stir for 3 minutes after adding acid to form Sb 2 o 3 A paste with a content of about 0.8% and an apparent specific gravity of 3.7.

[0068] 2. Formation of transition layer

[0069] Immerse the lead-calcium alloy grid of a 20Ah battery in the paste for 5 minutes, and use a brush to coat the surface of the grid, and control the weight of the paste to 5% of the total amount of the paste .

[0070] 3. Production of positive electrode paste

[0071] Add 100Kg of lead powder, 70g of fiber and 0.1Kg of Sb to a common paste machine 2 o 3 and 0.1Kg of SnSO 4 , dry mix for 5 minutes, add 12Kg of water, add water for 5 minutes, then add 10Kg of 1.4...

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Abstract

The invention discloses a lead storage battery capable of overcoming early capacity attenuation of a lead-calcium alloy battery and a preparation method of the lead storage battery, and belongs to thetechnical field of storage batteries. The preparation method comprises the following steps: (1) carrying out dry mixing on antimony trioxide or antimony pentoxide, fibers and lead powder, adding water, carrying out wet mixing, and adding a sulfuric acid solution to form a paste object with a specific gravity of 3-3.8; (2) dipping a lead-calcium alloy grid into the paste object, and wrapping the surface of the lead-calcium alloy grid with the paste object to form a transition layer; (3) coating a grid with the transition layer with the lead plaster to obtain a green plate; (4) carrying out curing under the condition that the temperature does not exceed 55 DEG C to obtain a positive plate; and (5) assembling the battery, adding an electrolyte, and performing inner formation to prepare the lead storage battery. According to the invention, the transition layer with high antimony content is formed on the surface of the lead-calcium alloy grid in advance, and an antimony-containing corrosion layer discharge more difficultly than an active substance, so that a passivation layer cannot be formed on a grid-active substance interface, and early capacity attenuation of the battery is effectively overcome.

Description

technical field [0001] The invention relates to the technical field of accumulators, in particular to a lead accumulator for overcoming early capacity attenuation of lead-calcium alloy batteries and a preparation method thereof. Background technique [0002] Valve-regulated batteries have become the mainstream of lead-acid batteries, using lead-calcium alloys with low self-discharge, high-purity lead powder materials and sulfuric acid electrolytes to reduce battery dehydration, while using one-way valves to achieve oxygen circulation and reduce battery charging and battery life. The loss of water during the placement process achieves the purpose of maintenance-free during the entire life of the battery. [0003] After using the lead-calcium alloy, the battery is prone to early capacity fading in the case of deep cycle. The main reason is the corrosion layer formed at the interface between the positive grid and the active material using the lead-calcium alloy, because the ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/06H01M10/12H01M4/48H01M4/56
CPCH01M4/48H01M4/56H01M10/06H01M10/12Y02E60/10Y02P70/50
Inventor 郭志刚张峰博李桂发邓成智刘玉李亚
Owner TIANNENG BATTERY GROUP
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