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Detection and water-supplying maintenance method of maintenance-free lead-acid battery

A lead-acid battery, maintenance-free technology, applied in the direction of secondary battery repair/maintenance, etc., can solve the problems that the battery electrolyte cannot be detected, affects the normal operation of the battery, and difficult to operate the battery maintenance, so as to delay the scrapping time, reduce the cycle, The effect of prolonging the use time

Inactive Publication Date: 2013-04-17
李建德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the maintenance-free lead-acid batteries used in the market are used in cars. The disadvantage is that the battery tank adopts a labyrinth exhaust structure. For a commonly used 12v battery, if it is continuously charged for 500h, the water loss is ≤6g (A h), because the battery has been in a high-temperature environment for a long time, if the battery produced by the manufacturer has quality problems, it may not be able to meet this indicator; in addition, during use, if the charging system fails, more or less Affect the normal work of the battery
[0003] Usually, if the water in the battery is lost, it will cause the concentration of sulfuric acid to be high, often reaching above 1.33%, then the chain reaction will be battery vulcanization, the voltage will increase, and the capacity will decrease; in addition, the battery is completely closed and can There is only one exhaust hole to communicate with the outside world. Since its structure is maintenance-free design, it is difficult to operate if professional battery maintenance is required, and the electrolyte inside the battery cannot be detected. The current general practice is only in case of failure. The battery is charged for routine maintenance. If it can be restored, it will be put into use. Otherwise, it can only be scrapped, causing unnecessary waste of resources and new environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ① Drill a small hole of 0.5 square centimeters in each cell above the side of the maintenance-free lead-acid battery;

[0028] ② Use a syringe and a concentration meter to draw 10 ml of electrolyte solution into each cell, and detect the concentration of sulfuric acid in each cell;

[0029] ③By analyzing the concentration of sulfuric acid in each cell, find out the reason that affects the decrease of battery capacity. If the concentration of sulfuric acid is 1.33g / cm 3 , indicating that the concentration of the electrolyte is too high to cause vulcanization of the plate;

[0030] ④ Pour the original electrolyte through the small hole and replace it with water. After activating the battery, pour the water again and adjust the concentration of sulfuric acid to 1.29g / cm 3 The electrolyte is transferred into each cell from the small hole;

[0031] ⑤ Perform active maintenance on each cell, so that the concentration of sulfuric acid in each cell reaches 1.3g / cm 3 ;

[00...

Embodiment 2

[0037] ① Drill a small hole of 0.4 square centimeters in each cell above the side of the maintenance-free lead-acid battery;

[0038] ② Use a syringe and a concentration meter to draw 10 ml of electrolyte solution into each cell, and detect the concentration of sulfuric acid in each cell;

[0039] ③By analyzing the concentration of sulfuric acid in each cell, find out the reason that affects the decrease of battery capacity. If the concentration of sulfuric acid is 1.38g / cm 3 , indicating that the concentration of the electrolyte is too high to cause vulcanization of the plate;

[0040] ④ Pour the original electrolyte through the small hole and replace it with water. After activating the battery, pour the water again and adjust the concentration of sulfuric acid to 1.29g / cm 3 The electrolyte is transferred into each cell from the small hole;

[0041] ⑤ Perform active maintenance on each cell, so that the concentration of sulfuric acid in each cell reaches 1.35g / cm 3 ;

[0...

Embodiment 3

[0047] Wang XX in Fenghuang District, Nanning City owns a car. He reported to us that the starting battery of the car is a 12vAh maintenance-free lead-acid battery. It was difficult to start when it was purchased and used in 2007 until February 2009. Less than ten minutes after the detection, the charging current dropped from the original 8A to 1A quickly, and the voltage also rose rapidly to the charging voltage of 1.6V, and the power generation system turned the battery into a floating charge state.

[0048] After understanding and testing the customer, we disassembled the maintenance-free lead-acid battery, drilled a small hole in each cell on the side of the battery casing, and then used a syringe to draw part of the electrolyte in each cell, and used it to The density meter detects its concentration, and it is found that the concentration of sulfuric acid per grid is as high as 1.34-1.36g / cm 3 , The reason why the charging capacity is not reduced is that the concentration...

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Abstract

The invention discloses a detection and water-supplying maintenance method of a maintenance-free lead-acid battery. The method comprises the following steps: drilling small holes in each unit cell above the side surface of the battery; detecting the sulfuric acid concentration in each unit cell; if the sulfuric acid concentration is 1.33-1.38g / cm3, showing that polar plate vulcanization is causedby too high concentration of electrolyte; pouring all the original electrolyte out and replacing with water, then pouring all the water out after activating treatment is carried out on the battery, and transferring the electrolyte of the sulfuric acid concentration of 1.29g / cm3 to each unit cell from the small holes; carrying out activating maintenance on each unit cell and ensuring the sulfuric acid concentration in each unit cell to achieve 1.3-1.35g / cm3; and mixing the sulfuric acid concentration in each unit cell to achieve a standard which is specified by a manufacturer; the method has low price, convenient utility and safe operation, and the method specially treats totally-enclosed maintenance-free lead-acid batteries and detects the sulfuric acid concentration in each unit cell, and after maintenance, the sulfuric acid concentration of the battery is regulated and controlled, thus recovering the charge-discharge capability of the battery.

Description

technical field [0001] The invention relates to a method for detecting and replenishing water for a lead-acid battery, in particular to a method for detecting and replenishing water for a maintenance-free lead-acid battery. Background technique [0002] At present, most of the maintenance-free lead-acid batteries used in the market are used in cars. The disadvantage is that the battery tank adopts a labyrinth exhaust structure. For a commonly used 12v battery, if it is continuously charged for 500h, the water loss is ≤6g (A h), because the battery has been in a high-temperature environment for a long time, if the battery produced by the manufacturer has quality problems, it may not be able to meet this indicator; in addition, during use, if the charging system fails, more or less Affect the normal operation of the battery. [0003] Usually, if the water in the battery is lost, it will cause the concentration of sulfuric acid to be high, often reaching above 1.33%, then the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42
CPCY02E60/12Y02E60/10
Inventor 李建德
Owner 李建德
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