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Method for controlling bulging deformation of valve-regulated lead-acid (VRLA) storage battery

A technology of lead-acid batteries and control valves, which is applied in the direction of lead-acid batteries, lead-acid battery construction, secondary batteries, etc., can solve the problems of battery safety hazards, negative impact on the economy, battery deformation, etc., to avoid economic losses, The effect of reducing the amount of thermal deformation and reducing the internal air pressure

Active Publication Date: 2016-01-06
FENGFAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bulging and deformed battery has potential safety hazards, so it will cause users to be highly vigilant, and a large number of complaints or returns due to battery deformation will cause serious negative impacts on the production of battery companies and major economic losses.
There are many factors that cause battery deformation, and the problem of controlling battery swelling and deformation is very difficult and needs to be solved urgently

Method used

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  • Method for controlling bulging deformation of valve-regulated lead-acid (VRLA) storage battery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019]Example 1: Production of 12V180Ah batteries, the assembly compression ratio of the pole group is 20%; in the process of adding electrolyte to the battery, the battery is first cooled at low temperature, and the assembled battery is placed in a freezer at a temperature lower than 0°C for 4 hours. Take out the cooled battery and add electrolyte immediately. The temperature of the electrolyte is cooled to 13°C by cooling acid machine; the temperature of the water bath in the battery forming process is controlled at 20°C; Safety valve; After holding the valve and standing for 72 hours, the bulging deformation of the battery is detected to be 0.8mm.

example 2

[0020] Example 2: Production of 12V1800Ah batteries, the assembly compression ratio of the pole group is 25%; in the process of adding electrolyte to the battery, the battery is first cooled at low temperature, and the assembled battery is placed in a freezer with a temperature below 0°C for 15 hours. Take out the cooled battery and add electrolyte immediately. The temperature of the electrolyte is cooled to 13°C by cooling acid machine; the temperature of the water bath in the battery formation process is controlled at 25°C; Put on the safety valve; after the valve is closed, let it stand for 72 hours, and then detect the battery swelling deformation of 1.0mm.

example 3

[0021] Example 3: In the production of 12V1800Ah batteries, the assembly compression ratio of the pole group is 23%; in the process of adding electrolyte to the battery, the battery is first cooled to a low temperature, and the assembled battery is placed in a freezer at a temperature lower than 0°C for 10 hours. Take out the cooled battery and add electrolyte immediately. The temperature of the electrolyte is cooled to 14°C by cooling acid machine; the temperature of the water bath in the battery formation process is controlled at 30°C; Safety valve; After holding the valve and standing still for 72 hours, the bulging deformation of the battery is detected to be 1.8mm. Use the vacuum equipment installed in the acid adding machine to pump air out of the battery, detect the deformation of the battery during the pumping process, and stop the pumping when the deformation of the battery is less than 1mm.

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PUM

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Abstract

The invention discloses a method for controlling a bulging deformation of a valve-regulated lead-acid (VRLA) storage battery. The method comprises a process of assembling a plate group in a jar, a process of performing capping, a process of adding an electrolyte into a battery, a process of forming the battery and a process of buckling a safety valve. In the process of assembling the plate group in the jar, a plate group assembling compression ratio is controlled between 20 percent and 25 percent. The process of adding the electrolyte into the battery comprises the following steps: firstly, performing cryogenic refrigeration on the battery; putting the assembled battery into an environment being lower than 0 DEG C in temperature, and standing the battery for 4-15 hours; and taking the refrigerated battery out, and adding the electrolyte immediately, wherein the temperature of the electrolyte is controlled below 15 DEG C. In the process of forming the battery, a water bath temperature is controlled between 20 DEG C and 30 DEG C. Compared with a battery produced with an existing process, the VRLA storage battery manufactured with the method has the advantages that a bulging deformation situation is improved remarkably; the bulging deformation of the VRLA battery is eliminated or reduced greatly; a deformation amount can be controlled below 1mm; and tremendous economic losses of enterprises due to return of deformed batteries are avoided.

Description

technical field [0001] The invention relates to a storage battery production method, in particular to a method for controlling swelling and deformation of a valve-controlled sealed lead-acid storage battery after forming and charging, and belongs to the technical field of storage batteries. Background technique [0002] Valve-regulated sealed lead-acid batteries are referred to as VRLA batteries for short. Its basic feature is that it does not need to add acid and water for maintenance during use. The battery is a sealed structure. There is a one-way exhaust valve (safety valve) on the battery cover. When the air pressure inside the battery rises to a certain value, the exhaust valve automatically opens to discharge the gas, and then automatically closes the valve to prevent air from entering the battery. Because VRLA batteries do not emit acid or acid mist to corrode equipment and pollute the environment, they are popular with users and have become more and more widely used...

Claims

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Application Information

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IPC IPC(8): H01M10/12H01M10/14
CPCH01M10/12H01M10/121H01M10/14Y02E60/10Y02P70/50
Inventor 赵从印孙晓飞邬会杰许丽丽吴学谦
Owner FENGFAN
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