Method and apparatus for detecting battery diaphragm paper sand hole

A battery separator and detection device technology, applied in the direction of optical testing flaws/defects, etc., can solve the problems such as the inability to meet the continuous production of batteries, the inability to effectively detect trachoma, and the limited size of holes, so as to achieve continuous detection and winding. , Overcome sampling randomness, low cost effect

Active Publication Date: 2009-01-21
SHENZHEN BAK POWER BATTERY CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The detection speed of this method is extremely slow, the efficiency is low, and it cannot meet the needs of continuous battery production, and because the size of the holes that can be observed by the naked eye is limited, this method cannot effectively detect trachoma smaller than the visual size of the naked eye, so it will also cause battery damage. The positive and negative poles are connected and short-circuited, producing a lot of waste products

Method used

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  • Method and apparatus for detecting battery diaphragm paper sand hole
  • Method and apparatus for detecting battery diaphragm paper sand hole
  • Method and apparatus for detecting battery diaphragm paper sand hole

Examples

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Embodiment 1

[0025] Such as figure 2 and image 3 As shown, this embodiment provides a detection device for battery separator paper trachoma, which includes an opaque detection box 1, which is a specific component of the light-shielding device, and the opposite first side 11 and the second side of the detection box 1 on the box body. Two side surfaces 12 corresponding positions are provided with a through hole 10, and the through hole 10 constitutes a transmission channel for the diaphragm paper to pass through; the light source 9 and the photoreceptor 8 are all arranged in the inner cavity of the detection box 1, respectively The different sides of the plane where the separator paper passes through.

[0026] In the detection device of the present embodiment, the width of the inner cavity of the detection box 1 and the width of the through hole are the same as the width of the diaphragm paper to be transported, which ensures that the section of the diaphragm paper between the two through...

Embodiment 2

[0029] Figure 4 and Figure 5 Shown is another embodiment of the detection device for battery separator paper trachoma. This embodiment also includes a closed and opaque detection box 1 around, and a first through hole 4 and a second through hole 5 are respectively opened on its opposite first side 11 and second side 12, thereby forming two supply channels. The transmission channel through which the diaphragm paper 2 passes; correspondingly, the first light source 3 and the second light source 7 are respectively arranged at both ends of the inner cavity of the detection box 1 and on each side of the two diaphragm papers 2; the photoreceptor 8 is arranged at the first transparent In the interlayer space between the hole 4 and the second through hole 5, since the photoreceptor 8 is set on the diaphragm paper during the winding process, and the winding of the two diaphragm papers is carried out synchronously, once the photoreceptor 8 Sensing the light signal passing through th...

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Abstract

The invention relates to a method and a device for detecting battery separator paper trachoma, wherein the method comprises shielding an external light source, leading only one surface of separator paper to be illuminated by the light source on one position of a transmission line, and then detecting whether the surface of the separator paper which is not illuminated has light to transmit or not, and then judging whether the separator paper has trachoma or not. The device for achieving the method comprises a detection box whose periphery is closed, and a light source and a photoreceptor which are respectively arranged on both sides of a plane wherein the separator paper is crossed over in the detection box, wherein the two lateral surfaces which are opposite of the detection box body are both provided with at least one permeating hole for the separator paper to cross over whose width is equal to the width of the separator paper, and the width of the permeating hole is equal to the width of the separator paper. The method can automatically, rapidly, effectively, efficiently and continuously detect battery separator paper trachoma, which overcomes the shortcomings of artificial naked eye detection which has big randomness, bad accuracy, low efficiency and the like, and can be widely used in the field of scroll trachoma detection.

Description

【Technical field】 [0001] The invention relates to the field of battery detection equipment, in particular to a detection method and device for battery separator paper trachoma. 【Background technique】 [0002] In the packaging process of battery production, it is necessary to use separator paper to separate the positive and negative electrodes of the battery and wind them together to prepare a cylindrical battery, or use separator paper to separate the positive and negative electrodes of the battery first, and then stack them into layers and seal them in a steel case to prepare square batteries. The purpose of installing separator paper between the positive and negative poles of the battery is to isolate the positive and negative poles from the electrolyte, prevent the two poles from being short-circuited due to contact, and at the same time ensure that the electrolyte ions can move freely between the positive and negative poles. Therefore, if there are trachoma on the batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95
Inventor 张洪建
Owner SHENZHEN BAK POWER BATTERY CO LTD
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