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Lead-acid storage battery negative grid and making method thereof

A lead-acid battery and a production method technology, applied in the direction of electrode carrier/current collector, etc., can solve the problems of increasing the quality of lead-acid battery, low battery specific energy, weight of finished battery, etc., to increase specific surface area and specific energy, coating layer Good binding force and weight reduction effect

Inactive Publication Date: 2016-10-12
HUBEI RUNYANG NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the lead-acid battery has many excellent performances, its specific energy is relatively low, the cycle life is short, and the finished battery is heavy, which is still an urgent problem for the lead-acid battery to adapt to the new situation.
Analyzing the composition of the lead-acid battery, it is not difficult to find that the main reason for the low specific energy of the battery is that the inactive substance lead, mainly the lead-based alloy grid material, is used in a large amount, thereby increasing the quality of the lead-acid battery

Method used

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  • Lead-acid storage battery negative grid and making method thereof

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Effect test

Embodiment 1

[0025] Firstly, prepare the SiC-Ti alloy matrix, add 25% Ti in the mass fraction of the matrix during the preparation process of the SiC matrix, and after shaping, carry out pickling and etching to obtain the foamed SiC-Ti alloy matrix 1;

[0026] Secondly, the outer surface of the etched foamed SiC-Ti alloy substrate 1 is hot-dipped with a 0.001 mm copper coating;

[0027] Finally, lead-tin alloy immersion is carried out on the copper plating layer 2 to form a 0.01mm lead-tin alloy plating layer 3 to obtain a lead-acid storage battery negative electrode grid.

Embodiment 2

[0029] Firstly, prepare the SiC-Ti alloy matrix, add 25% Ti in the mass fraction of the matrix during the preparation process of the SiC matrix, and after shaping, carry out pickling and etching to obtain the foamed SiC-Ti alloy matrix 1;

[0030] Secondly, the outer surface of the etched foamed SiC-Ti alloy substrate 1 is hot-dipped with a 0.05mm copper coating;

[0031] Finally, lead-tin alloy immersion is performed on the copper plating layer 2 to form a 0.05mm lead-tin alloy plating layer 3 to obtain a lead-acid storage battery negative electrode grid.

Embodiment 3

[0033] Firstly, prepare the SiC-Ti alloy matrix, add Ti with a mass fraction of 25% of the matrix during the preparation of the SiC matrix, and perform alkali cleaning and etching after shaping to obtain the foamed SiC-Ti alloy matrix 1;

[0034] Secondly, the outer surface of the etched foamed SiC-Ti alloy substrate 1 is hot-dipped with a 0.1 mm copper coating;

[0035] Finally, lead-tin alloy immersion is performed on the copper plating layer 2 to form a 1 mm lead-tin alloy plating layer 3 to obtain a lead-acid battery negative electrode grid.

[0036] The weight of the lead-acid storage battery negative electrode grid prepared by the method of the invention is 15% of the common lead alloy grid, 35% of the copper mesh or foamed copper-based lead grid, and its surface area is 8 to 12 times that of the common lead alloy grid. , The specific energy is increased from the traditional 30-40Wh / kg to more than 100Wh / kg.

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Abstract

The invention provides a lead-acid storage battery negative grid and a making method thereof. An SiC matrix has large resistivity, Ti accounting for 25% of the mass fraction of the matrix is added during preparation of the matrix, Ti reacts with silicon carbide to form new phase TiSi2, the existence of the conductive phase TiSi2 reduces the material resistivity and improves the conductivity of silicon carbide. Then, chemical etching treatment is carried out on the SiC-Ti alloy, so that the SiC-Ti alloy can have large porosity and specific surface area, can greatly reduce the weight and increase the specific surface area and specific energy, and has good plating layer bonding force.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery materials, in particular to a lead-acid battery negative electrode grid and a manufacturing method thereof. Background technique [0002] Lead-acid batteries are currently the most widely used and cheapest secondary batteries. With the continuous development of lead-acid batteries, new breakthroughs have been made in the research and application of grid materials. Although the lead-acid battery has many excellent performances, its specific energy is relatively low, the cycle life is short, and the finished battery is heavy, which is still an urgent problem for the lead-acid battery to adapt to the new situation. Analyzing the composition of the lead-acid battery, it is not difficult to find that the main reason for the low specific energy of the battery is that the inactive substance lead, mainly the lead-based alloy grid material, is used in a large amount, thereby increasing the quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/73H01M4/82
CPCH01M4/73H01M4/82Y02E60/10
Inventor 罗旭陈健刘克宇程先清徐进
Owner HUBEI RUNYANG NEW ENERGY