Power Battery

A power battery and battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as hindering the battery charging and discharging process, shortening battery life, and early battery capacity loss, and improving cycle life and high-current discharge performance. , reduce the grain size, improve the utilization rate and the effect of mass-energy ratio

Active Publication Date: 2016-08-31
ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the lead-calcium alloy has a high oxygen evolution overpotential and a small amount of gas evolution, it is difficult to control the consistency of the product due to the activity of calcium in the manufacturing process, especially the high-impedance crystalline polymer is easily formed between the grid alloys, which seriously hinders As the charging and discharging process of the battery proceeds, the crystalline polymer on the surface of the lead-calcium grid corrodes first, aggravating the loss of the early capacity of the battery, thereby greatly shortening the service life of the battery, and the impact of the positive grid is the greatest.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The invention includes positive and negative plates composed of a grid and an active material, the active material is composed of lead powder and sulfuric acid, the grid is an alloy grid, and the positive grid is composed of the following components in parts by weight: Ag 0.02% , Ti 0.05%, Sn 0.9%, Ca 0.06%, and the balance is Pb; the negative electrode grid is composed of the following components in parts by weight: Ca 0.08%, Al 0.02%, Sn 1.0%, and the balance is Pb.

[0014] The degree of oxidation of the lead powder is 75%, and the apparent density is 0.9g / cm 3 .

[0015] The battery adopts an internal chemical formation process, and the density of sulfuric acid in the chemical electrolyte is 1.23g / cm 3 .

[0016] The upper surface of the pole group of the battery is injected with silica sol, and sio in the silica sol 2 The content is 4%, and the density of silica sol is 1.35 g / cm 3 .

Embodiment 2

[0018] In this embodiment, the positive electrode grid is composed of the following components in parts by weight: Ag 0.03%, Ti 0.06%, Sn 1.5%, Ca 0.08%, and the balance is Pb; the negative electrode grid is composed of the following components in parts by weight: Ca 0.09%, Al 0.05%, Sn 1.6%, and the balance Pb.

[0019] The degree of oxidation of the lead powder is 85%, and the apparent density is 1.25g / cm 3 .

[0020] The battery adopts an internal chemical synthesis process, and the density of sulfuric acid in the chemical electrolyte is 1.26 g / cm 3 .

[0021] The upper surface of the pole group of the battery is injected with silica sol, and sio in the silica sol 2 The content is 6%, and the density of silica sol is 1.45 g / cm 3 .

Embodiment 3

[0023] In this embodiment, the positive grid is composed of the following components in parts by weight: Ag 0.025%, Ti 0.055%, Sn 1.2%, Ca 0.07%7, and the balance is Pb; the negative grid is composed of the following components in parts by weight: Ca 0.085% , Al 0.04%, Sn 1.3%, and the balance is Pb.

[0024] The degree of oxidation of the lead powder is 80%, and the apparent density is 1.1g / cm 3 .

[0025] The battery adopts an internal chemical synthesis process, and the density of sulfuric acid in the chemical electrolyte is 1.24 g / cm 3 .

[0026] The upper surface of the pole group of the battery is injected with silica sol, and sio in the silica sol 2 The content is 5%, and the density of silica sol is 1.40 g / cm 3 .

[0027] The corrosion of the positive plate is an important cause of damage to the lead-acid battery, so it is of great significance to study the corrosion resistance of the experimental grid alloy. Table 1 shows the mass loss test results of the above...

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Abstract

The invention discloses a ternary non-aggregated power battery. The ternary non-aggregated power battery comprises positive and negative pole plates composed of plate grids and active substances, wherein the active substances are composed of lead powder and sulfuric acid; each plate grid is a ternary non-aggregated alloy plate grid; a positive pole plate grid is prepared from the following components in parts by weight: 0.02%-0.03% of Ag, 0.05%-0.06% of Ti, 0.9%-1.5% of Sn, 0.06%-0.08% of Ca and the balance of Pb; and a negative pole plate grid is prepared from the following components in parts by weight: 0.08%-0.09% of Ca, 0.02%-0.05% of Al, 1.0%-1.6% of Sn and the balance of Pb. According to the ternary non-aggregated power battery, Sn, Al and Ti elements are added into the plate grids and an alloy interface presents an amorphous-state polymer; the resistance of a resistance layer is obviously reduced; the circulating service life of the battery is prolonged and large-current charging and discharging performances of the battery are improved; and the corrosion resistance of the plate grids in sulfuric acid is improved and the service life of the battery is greatly prolonged.

Description

technical field [0001] The invention relates to the field of storage batteries, in particular to power batteries. Background technique [0002] The corrosion resistance of lead-antimony alloy is not high, and the water loss and self-discharge are large when the battery is in use, which limits the capacity preservation ability of lead-acid batteries during storage and increases maintenance and operating costs. At the same time, due to the mandatory requirements of the environmental protection access conditions of lead-acid batteries, the grid lead-antimony alloy is banned and is currently replaced by lead-calcium alloy. Although the lead-calcium alloy has a high oxygen evolution overpotential and a small amount of gas evolution, it is difficult to control the product consistency due to the activity of calcium in the manufacturing process, especially the high-impedance crystalline polymer is easily formed between the grid alloys, which seriously hinders As the charging and di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/73H01M4/66
CPCH01M4/662H01M4/73Y02E60/10
Inventor 李军陈艳娟方明学
Owner ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
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