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Anode grid alloy of lead acid storage battery for energy storage

A lead-acid battery, positive plate technology, applied in the direction of electrode carrier/current collector, etc., can solve the problems of early termination of life, early capacity decay, poor conductivity, etc., to reduce thermal runaway bulging problems, reduce early capacity decay, corrosion resistance, etc. The effect of improved performance

Inactive Publication Date: 2012-05-02
JIANGSU SHUANGDENG GROUP
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Problems solved by technology

At present, lead-calcium alloy or lead-antimony alloy is generally used in the industry; although lead-calcium alloy has high oxygen evolution overpotential and small gas evolution, due to the poor conductivity of the corrosion film formed by calcium, lead-acid batteries are prone to early capacity decay and charge acceptance. Faults such as early termination of life due to insufficient capacity; lead-antimony alloys have low corrosion resistance, which limits the capacity retention of lead-acid batteries during storage, and the battery is prone to thermal runaway swelling due to grid corrosion during recycling

Method used

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  • Anode grid alloy of lead acid storage battery for energy storage
  • Anode grid alloy of lead acid storage battery for energy storage

Examples

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example 1

[0007] Example 1: Select each component according to the following mass percentages: calcium: 0.12%, tin: 0.13%, aluminum: 1.2%, and the rest is lead, and the weight is M 1 common lead-calcium alloys; from M 1 In ordinary lead-calcium alloys, take the weight as M 2 Common alloys with a mass percentage of 0.05% silver are added; the positive grids are made respectively and assembled to form two common 2V500Ah batteries for energy storage in the market, and the inside of the battery is a common structure of 11 positive plates and 12 negative plates. , the negative electrode adopts the negative lead-calcium alloy commonly used in the market.

[0008] Connect the above two kinds of 6 batteries in series, discharge them at a constant current of 50A for 3 hours, then charge them at a constant voltage of 2.35V / cell with a current limit of 75A for 5 hours for a complete cycle, and perform a 30% DOD shallow cycle. When the discharge capacity is continuously discharged three times Whe...

example 2

[0009] Example 2: Select each component according to the following mass percentages: calcium: 0.11%, tin: 0.14%, aluminum: 1.4%, and the rest is lead, and the weight is M 1 common lead-calcium alloys; from M 1 In ordinary lead-calcium alloys, take the weight as M 2 Common alloys with a mass percentage of 0.08% silver are added; positive grids are fabricated and assembled to form two common 2V500Ah batteries for energy storage in the current market, and the inside of the battery is a common structure of 11 positive plates and 12 negative plates , the negative electrode adopts the negative lead-calcium alloy commonly used in the market.

[0010] Connect the above two kinds of 6 batteries in series, discharge them at a constant current of 50A for 3 hours, then charge them at a constant voltage of 2.35V / cell, and charge them at a current limit of 75A for 5 hours for a complete cycle, and cycle at 30% DOD. When the discharge capacity is continuously discharged three times When it...

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Abstract

The invention provides anode grid alloy of lead acid storage battery for energy storage. The grid alloy is characterized in that silver element is added in lead calcium tin aluminum alloy, wherein the mass percentage content of silver is 0.007%-0.12%. The grid alloy has strong corrosion resistance and high conductivity, so that the shadow cycle life and charging acceptable capability of the lead acid storage battery in a same structure can be improved remarkably.

Description

technical field [0001] The invention relates to a positive electrode grid alloy of a lead-acid storage battery for energy storage, belonging to the field of lead-acid storage batteries. Background technique [0002] The grid is a key component of the lead-acid battery, which has a decisive influence on the performance of the battery. In order to achieve the requirements of deep cycle and less maintenance for lead-acid batteries for energy storage, the positive grid requires corrosion resistance, good interface conductivity and not easy to lose water. At present, lead-calcium alloy or lead-antimony alloy is generally used in the industry; although lead-calcium alloy has high oxygen evolution overpotential and small gas evolution, due to the poor conductivity of the corrosion film formed by calcium, lead-acid batteries are prone to early capacity decay and charge acceptance. Faults such as early termination of life due to insufficient capacity; lead-antimony alloys have low c...

Claims

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Application Information

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IPC IPC(8): H01M4/68C22C11/06
CPCY02E60/12Y02E60/10
Inventor 丁同臣陈冰花刘玲
Owner JIANGSU SHUANGDENG GROUP
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