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Porous graphite electrode for lead-acid battery

A lead-acid battery, porous graphite technology, applied in lead-acid battery electrodes, electrode carriers/current collectors, etc., can solve the problems affecting battery performance and life, active material shedding, large pollution, etc., to improve weight specific energy, production The effect of cost reduction and lead pollution reduction

Active Publication Date: 2013-11-06
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active material is easy to fall off when the battery is used for a long time, which directly affects the performance and life of the battery; and the use of lead alloy as a conductive material also has the disadvantages of heavy weight, high cost, and large pollution

Method used

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Examples

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with drawings and embodiments.

[0011] Referring to the accompanying drawings, the porous graphite electrode of the lead-acid battery is mainly composed of a pole plate 1, an active material 4 and a pole ear 2. The pole plate 1 is a porous graphite material, which is a tubular graphite structure connected by a plurality of parallel graphite tubes. The active material 4 is filled in the graphite tube. In this example, the wall thickness of the graphite tube is 0.8 mm, the porosity of the porous graphite is 50%, and the resistivity is less than 60 μΩ·cm. There are two connecting holes 3 on the lug 2 on the top of the pole plate, both of which are tapered holes, and the taper directions are opposite. The graphite tube opening at the bottom of the pole plate is provided with a PP plastic plug 5 .

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Abstract

The invention discloses a porous graphite electrode for lead-acid battery, wherein an electrode plate is made of a porous graphite material; the electrode plate is in a tubular graphite structure formed by connecting a plurality of graphite tubes into a whole, active substances are filled in the graphite tubes, the wall thickness of each graphite tube is 0.4-1.0 mm, and the porosity of porous graphite is 40-60%. The electrode is used for manufacturing the lead-acid battery, can guarantee that the active substances do not fall off, and increase the contact area with the electrode plate, and then can be used for improving the conductivity and service life of the battery; and meanwhile, graphite replacing a lead alloy is used as the electrode plate, therefore, the lead pollution can be greatly reduced, the weight of the battery can be reduced, the gravimetric specific energy of the battery can be improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to an electrode of a lead-acid storage battery, in particular to a porous graphite electrode of a lead-acid storage battery. Background technique [0002] Lead-acid battery electrodes are mainly composed of plates, active materials and tabs. At present, lead-acid battery plates generally use lead and its alloys to conduct electricity through casting or die-casting into grids or lead cores, and then coat the active materials on the electrodes. board surface. The active material is easy to fall off when the battery is used for a long time, which directly affects the performance and life of the battery; and the use of lead alloy as a conductive material also has the defects of heavy weight, high cost, and large pollution. Contents of the invention [0003] The purpose of the present invention is to provide a lead-acid storage battery porous graphite electrode which can improve battery performance and service life, reduce pollution...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/14H01M4/73H01M4/68
CPCY02E60/126Y02E60/10
Inventor 于士洋李茂荣
Owner SHUANGDENG GRP
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