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Method for detecting nickel-hydrogen battery separator wet electric resistance and device thereof

A nickel-metal hydride battery, resistance detection technology, applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of difficult operation, low detection efficiency, poor sample clamping stability, etc., to improve the detection rate and accuracy. Improve the effect of simple and convenient detection technology

Inactive Publication Date: 2009-11-11
北京健翔顺鑫科技有限公司 +1
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  • Application Information

AI Technical Summary

Problems solved by technology

The clamping method and stress state of the tested separator in the instrument are very different from the use state of the separator in the battery structure, which cannot reflect the use effect of the battery separator
Moreover, the sample clamping stability is poor during the detection, and the operation is difficult and the detection efficiency is low.

Method used

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  • Method for detecting nickel-hydrogen battery separator wet electric resistance and device thereof
  • Method for detecting nickel-hydrogen battery separator wet electric resistance and device thereof

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Embodiment Construction

[0031] The invention provides a method and device for detecting wet resistance of a nickel-hydrogen battery diaphragm, and specific embodiments are as follows:

[0032] 1. The size of the porous electrode of this detection device is designed with reference to the size of the positive and negative plates of a nickel-hydrogen battery:

[0033] Upper electrode plate: width: 42 mm, length: 95 mm;

[0034] Lower electrode plate: width: 52 mm, length: 105 mm;

[0035] The nickel-metal hydride battery special foamed nickel metal sheet with a compacted thickness of 0.6 mm is cut and processed, and nickel wire leads are spot-welded to form a three-dimensional mesh porous electrode plate.

[0036] 2. The upper electrode support is made of hard fluoroplastics. The size of the support is 42 mm in width, 95 mm in length and 30 mm in thickness; the lower end is processed with a 1.5x1.5 mm V-shaped shallow groove, which is distributed at 45 degrees to form a diversion. groove. A porous upper ele...

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Abstract

The invention relates to a method for detecting nickel-hydrogen battery separator wet electric resistance and a device thereof. The main technical characteristics are: simulated battery separator materials are under the state of extrusion and stress in the battery system; multiaperture type electrodes similar to polar plate area and size in the battery system exercises certain pressure over a separator sample in the same area and is immerged into electrolyte to carry out the method for detecting battery separator wet electric resistance. The detection device comprises a lower electrode supporting mass, a stream guidance shallow groove, a multiaperture lower plate electrode, a multiaperture upper plate electrode, a stream guidance shallow groove, an upper electrode supporting mass, a pressing weight and a cylinder, which form a detection platform for holding the sample separator; a ring-shaped liquid storage tank where electrolyte is injected is arranged on the lower electrode supporting mass, the separator is immerged for wet electric resistance detection. The method and device of the invention feature simple and convenient operation, can quickly and accurately reflect quality of the battery separator, which is in favor of quality control.

Description

Technical field [0001] The method and device for detecting the wet resistance of the nickel-hydrogen battery diaphragm are a detection technology for the quality control of industrial production batteries involved in the technical fields of chemical power supplies and batteries. Background technique [0002] Diaphragm material is an important structural material that composes Ni-MH battery. The diaphragm must have high chemical stability and good ability to absorb and maintain electrolyte. It has mechanical properties suitable for winding assembly processing. The diaphragm is not only an electronic insulator, but also must have excellent ionic conductivity. Therefore, the wet resistance value of the diaphragm material in the electrolyte should not be high, otherwise it will increase the internal resistance of the battery and increase the internal consumption of the battery so that the battery cannot release large currents. Therefore, the diaphragm material is preferred for the de...

Claims

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Application Information

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IPC IPC(8): G01R31/36G01N27/04
Inventor 刘则立
Owner 北京健翔顺鑫科技有限公司
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