Light bipolar lead-acid battery grid and preparation method thereof

A lead-acid battery, bipolar technology, applied in bipolar electrodes, battery electrodes, active material electrodes, etc., to achieve low resistivity, improve weight specific energy and power characteristics

Active Publication Date: 2021-08-13
ZIBO TORCH ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

BaPbO 3 As a conductive ceramic, it has the characteristics of metal conductivity, and the resistivity is less than 10 -2 Ω·cm, and has high temperature PTC characteristics, is a new type of conductive material, its application field is expanding, and now it has involved in the fields of electronics, machinery, chemical industry, aerospace, communication and household, but the synthesis of barium lead acid, especially for There is currently no experience that can be used for reference in terms of the forming process of the plate and how to improve the combination of the lead-acid barium grid and the lead paste

Method used

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  • Light bipolar lead-acid battery grid and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 1460g BaCO 3 with 1180g Pb 3 o 4 For the sample, weigh 60g of fumed silica and 20g of ytterbium fluoride at the same time, use a planetary ball mill at 1000 rpm, grind and mix for 10min, put the above powder into the mold, the cavity size of the mold is 100mm × 100mm, and the thickness of the substrate cavity is 0.5mm, frame thickness 10mm, mold clamping pressure value 0.5MPa, material is stainless steel, put into muffle furnace after fixing, in air atmosphere and temperature 1000℃, time is 5h. After cooling down naturally, open the mold, take out the plate, and remove the burrs.

[0030] The pressed barium lead acid sintered plate is used as the working electrode, the pure lead plate is used as the counter electrode, the aqueous solution of 10% lead nitrate and 35% sulfuric acid is used as the electrolyte, and the Hg / Hg 2 SO 4 / H 2 SO 4 As a reference electrode, use the constant potential method to conduct cathodic polarization at the potential of -1.1V for...

Embodiment 2

[0054] Weigh 1460g BaCO 3 with 1180g Pb 3 o 4 For the sample, weigh 60g of fumed silica and 20g of ytterbium fluoride at the same time, use a planetary ball mill at 1000 rpm, grind and mix for 10min, put the above powder into the mold, the cavity size of the mold is 150mm × 150mm, and the thickness of the substrate cavity is 1mm, frame thickness 10mm, mold clamping pressure value 0.8Mpa, material is stainless steel, put into muffle furnace after fixing, in air atmosphere and temperature 1000℃, time is 6h. After cooling down naturally, open the mold, take out the plate, and remove the burrs.

[0055] The pressed barium lead acid sintered plate is used as the working electrode, the pure lead plate is used as the counter electrode, the aqueous solution of 10% lead nitrate and 35% sulfuric acid is used as the electrolyte, and the Hg / Hg 2 SO 4 / H 2 SO 4 As a reference electrode, use the constant potential method to conduct cathodic polarization at the potential of -1.1V for 6...

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Abstract

The invention belongs to the technical field of lead-acid storage batteries, and particularly relates to a light bipolar lead-acid battery grid and a preparation method thereof. The light high-performance bipolar grid is formed when barium plumbate powder synthesized by lead tetraoxide and barium carbonate at high temperature is sintered and pressed with fumed silica and rare earth fluoride, and then cathodic polarization treatment is conducted. The density of the light high-performance bipolar plate grid is 35% of that of a lead alloy plate grid, the resistivity is low, the surface of the plate grid can be electronically and physically connected with an active substance, and the gravimetric specific energy and the power characteristic of a bipolar battery are improved.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a light bipolar lead-acid battery grid and a preparation method thereof. Background technique [0002] Traditional lead-acid batteries have mature technology and low cost, but have always had the disadvantage of low weight to energy ratio, which limits their application in certain fields. Bipolar lead-acid battery adopts bipolar structure. Compared with traditional batteries, it has the characteristics of less lead consumption, light weight, small volume, high energy density, mass power density, cheap price, and easy recycling. The power source of new energy vehicles, especially hybrid vehicles, provides a broad space for development. The lead alloy grid has good electrical conductivity, and it is easy to form a corrosion layer during the solidification process with the active material, which improves the electronic connection and mechanical connection be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/73H01M4/82
CPCH01M4/73H01M4/666H01M4/82H01M2004/029Y02E60/10
Inventor 唐胜群陈龙霞陈默战祥连吴涛李艳芬李敏王强唐慧芹苏鑫张进宇冯作栋
Owner ZIBO TORCH ENERGY
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