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A method for testing the wet resilience of AGM separators used in valve-controlled sealed lead-acid batteries

A lead-acid battery and detection method technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of large differences and difficult to truly reflect the resilience performance of AGM separators.

Active Publication Date: 2021-11-16
SHANDONG SACRED SUN POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application process of assembling the battery, the AGM separator is used in a large-area sheet compared to a certain pressure point of the above-mentioned test separator, and it is used in the battery with multiple positive and negative plates. Therefore, This traditional method of detecting the resilience performance of the AGM separator is quite different from the actual application scenario of the separator. It is difficult to truly reflect the resilience performance of the AGM separator in the actual application scenario through this detection method.

Method used

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  • A method for testing the wet resilience of AGM separators used in valve-controlled sealed lead-acid batteries
  • A method for testing the wet resilience of AGM separators used in valve-controlled sealed lead-acid batteries
  • A method for testing the wet resilience of AGM separators used in valve-controlled sealed lead-acid batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take the AGM separators of manufacturers A and B with specifications of 163×580×2.6mm (10kPa) and cut them into 7 pieces of 100mm×100mm in size, and put them on the image 3 The total thickness test under the pressure strength of 10kPa in the dry state is carried out on the AGM separator thickness measuring equipment shown, and the obtained results are A: 18.31mm and B: 18.24mm, and record the above test results.

[0049] Then test the total thickness of the above-mentioned stacked AGM separators under the pressure strength of 50kPa in a dry state, and the obtained results are A: 14.64mm and B: 14.58mm, and record the test results.

[0050] Put the above 7 pieces of AGM separators from manufacturer A into the figure 1 In the jig of the splint shown, and keep the compression ratio under the pressure strength of 50kPa in dry state, that is, the total thickness of the AGM separator in the fixture is 14.64mm; the AGM separator of B manufacturer adopts the same operation met...

Embodiment 2

[0056] Take 157×1.35mm (10kPa) roll-type AGM separators from manufacturers A and B, cut them into 12 pieces of 100mm×100mm in size, and put them on the image 3 The total thickness test under the pressure strength of 10kPa in the dry state is carried out on the AGM separator thickness measuring equipment shown, and the obtained results are A: 16.17mm and B: 16.22mm, and record the above test results.

[0057] Then test the total thickness of the above-mentioned stacked AGM separators under a pressure of 40kPa in a dry state, and the obtained results are A: 13.45mm and B: 13.67mm, and record the test results.

[0058] Put the above 12 pieces of AGM separators from manufacturer A into a figure 1 In the jig of the splint shown, and keep the compression ratio under the pressure strength of 40kPa in the dry state, that is, the total thickness of the AGM separator in the fixture is 13.45mm; the AGM separator of B manufacturer adopts the same operation method, that is, B manufacturer...

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Abstract

The invention belongs to the technical field of detection of AGM separators, in particular to a method for detecting the wet-state resilience of AGM separators used in valve-controlled sealed lead-acid batteries, comprising the following steps: cutting AGM separator samples, stacking them, and measuring their thickness , to obtain the dry total thickness; according to the preset assembly pressure of the lead-acid battery semi-finished product, compress the superimposed AGM separator and measure its total thickness; place the AGM separator in the jig, clamp the jig so that the The total thickness of the AGM separator is consistent with the total thickness of the separator under the assembly pressure, and then placed in a sulfuric acid solution to stand; AGM separator; measure the thickness of the superimposed wet AGM separator under the assembly pressure to obtain the total thickness in wet state; calculate the wet resilience test result of the AGM separator sample according to the total thickness in dry state and the total thickness in wet state .

Description

technical field [0001] The invention belongs to the technical field of detection of AGM separators, in particular to a method for detecting the wet-state resilience of AGM separators used in valve-controlled sealed lead-acid batteries. Background technique [0002] With the wide application of valve-regulated lead-acid batteries in different fields, end customers have more and more stringent requirements for batteries. As a lead-acid battery manufacturer, in addition to more professional and systematic battery design and more refined production process technology In addition, the raw materials used in batteries also need in-depth research. As the "third electrode" of the lead-acid battery, the AGM separator plays an important role in the structure of the battery. The root cause of early failure of many batteries is that the elastic failure of the separator leads to a decrease in the bonding strength with the plate, resulting in the loss of the positive active material. Poro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 李现红宋然贾巧巧孔令茹王培
Owner SHANDONG SACRED SUN POWER SOURCES