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Valve controlling sealed lead-acid battery negative pole plate salt crystallization activation method

A technology of lead-acid battery and activation method, which is applied in the direction of lead-acid battery, battery recycling, secondary battery repair/maintenance, etc., and can solve problems such as little effect and difficult to restore battery capacity level

Inactive Publication Date: 2007-03-21
李建德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no matter which method is used, it can only make the effective active substances in the battery undergo electrochemical action. For those irreversible sulfation, the effect is not great, and it is difficult to restore the capacity level of the battery.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0019] The battery car battery 6-DZM-10 produced by Wuxingda Industrial Co., Ltd. is 12V voltage, 10Ah, produced in July 2004. Due to long storage time, capacity decreased due to sulfation in August 2006. Inspection before repair: charge it with a fast pulse current, when the voltage reaches 13.5V, the battery has a slight heat, and then discharge it with a 100W 12V car bulb, the discharge current is 4.2A, and the continuous time difference is 40 minutes. The capacity is clearly reduced. Repair process: Drill a hole at the corresponding bottom of the battery tank, inject pure water at 40°C into the battery from the hole, and dilute the discharged electrolyte concentration to 1.10g / cm 3 When the time is below, the pulse current is applied again to fully activate the sulfate on the negative plate. The charging current used is 1 / 3 of the battery capacity, the charging time is about 8 hours, and the single cell is charged to a voltage of 2.35 volts. At this time, when the sulfu...

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Abstract

This invention discloses an activation method for salt crystals of negative pole plates of valve controlled sealed Pb acid storage cells characterizing in opening a hole at the place corresponding to the cell mechanism at the cell bottom, injecting pure water in the safety valve hole to dilute electrolyte in the original cell tank and discharging part of the electrolyte from the bottom hole to dilute it then to be activated by pulse electricity, crystallizing the sulfate on the negative pole plate, the voltage of a grid reaches to 2.35V and large amount of air bubbles are emited, then adjusting the density of the electrolyte to seal the bottom hole and charge to resume the capacitance.

Description

technical field [0001] The invention relates to a storage battery, in particular to a valve-controlled sealed edge-acid storage battery. Background technique [0002] In my country, valve-regulated sealed lead-acid batteries are widely used in electric bicycles and motorcycles. During the use of this battery, due to water loss or long-term storage and over-discharge, it is easy to form a white hard salt crystal on its negative plate, that is, lead sulfate crystals, which wrap the negative plate. Salt is irreversible sulfation, the crystal resistance is high, the conductivity is poor, and it is difficult to charge. It becomes the main reason for the reduction of battery capacity and shortened service life. [0003] The usual solution to sulfation is to recharge the battery electrolyte for a long time with a small current or use an intelligent charging device to activate its input pulse current after the electrolyte of the battery is prepared. However, no matter which metho...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M10/42H01M10/06
CPCY02E60/126Y02E60/10Y02W30/84
Inventor 李建德
Owner 李建德
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