Bright spot inspection device for lithium battery diaphragm

A technology of lithium battery separator and inspection device, which is applied to measurement devices, material analysis by optical means, instruments, etc., can solve the problems of low inspection efficiency, unevenness and jitter, and excessive operation factors, and achieves the improvement of inspection efficiency, Guaranteed inspection accuracy and high inspection efficiency

Active Publication Date: 2016-03-02
TONGLING JINGNENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small bright spot, affected by the angle and brightness of the ambient light on site and the manual flattening of the diaphragm by the inspector (occasionally uneven and jittery), the leak detection of the bright spot of the leak meter occurs from time to time.
In addition, the above-mentioned inspection method is measured by a ruler and inspected roll by section. At the same time, the angle of the diaphragm and the light must be constantly changed to facilitate the counting of the number of bright spots. There are too many operational factors to be considered by the inspectors on site, and the inspection efficiency is obviously extremely low.

Method used

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  • Bright spot inspection device for lithium battery diaphragm
  • Bright spot inspection device for lithium battery diaphragm
  • Bright spot inspection device for lithium battery diaphragm

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Embodiment Construction

[0024] For ease of understanding, combined here Figure 1-3 The specific implementation structure and work flow of the present invention are described as follows:

[0025] The concrete implementation structure of the present invention, as Figure 1-3 As shown, it includes: light box 20, fluorescent lamp (ie light source 10), unwinding reel 40, scaled acrylic plate (ie transparent plate 30), guide roller 50, scale 60, switch. Wherein, the shape of the light box 20 is a triangular box with right-angled sides, and its inner cavity forms a fixed cavity for installing and fixing the fluorescent lamp. The entire slope of the light box 20 is arranged at 30-45°, and the entire slope is formed by laying an acrylic plate with a scale 60 . At the top of the acrylic plate, such as figure 1 The guide roller 50 whose axis is parallel to its plate surface is set as shown; above the top of the acrylic plate, an unwinding shaft 40 whose axis is parallel to its plate surface is arranged, and...

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Abstract

The invention belongs to the field of the inspection tool die for the inspection of the bright spot on diaphragm surface in the production of lithium battery diaphragms, and more specifically provides a bright spot inspection device for a lithium battery diaphragm. The device includes a light box with built-in light sources; one surface of the light box is provided with a transparent plate for the light from the light sources to pass through; an unwinding shaft for sleeve arrangement of a diaphragm roll is arranged at one end of the transparent plate, and the axis of the unwinding shaft is parallel to the transparent plate; the unwinding shaft is arranged above the transparent plate; a guide roller is fixed on one end of the transparent plate where the unwinding shaft locates; the axis of the guide roller is parallel to the axis of the unwinding shaft; a gap formed by the guide roller surface and the transparent plate surface forms a passage channel for passing of the diaphragm pressing close the transparent plate surface; and the transparent plate is provided with scales along a direction perpendicular to the axis of the unwinding shaft. The device can effectively avoid the influence of light on the inspection results, realize rapid test operation of a plurality of diaphragm rollers, and greatly improve the inspection efficiency.

Description

technical field [0001] The invention belongs to the field of inspection tooling molds for inspecting bright spots on membrane surfaces during the production of lithium battery diaphragms, and in particular relates to a bright spot inspection device for lithium battery diaphragms. Background technique [0002] Due to the production process of the dry biaxially stretched lithium battery separator, the polymer crystallization points in the raw materials will form tiny flaws on the surface of the separator, commonly known as "bright spots". More bright spots will have a greater impact on the performance of the diaphragm. During the inspection process, specific inspection steps and standards will be used for random inspection. At present, the conventional inspection method is to use manual ruler measurement supplemented by section-by-section inspection methods, specifically: after obtaining the diaphragm film roll to be inspected, use a ruler to measure the length and width of a ...

Claims

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Application Information

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IPC IPC(8): G01N21/88
CPCG01N21/8422G01N21/88
Inventor 赵辰程志辉梁志扬应纯伟方庆盛
Owner TONGLING JINGNENG ELECTRONICS
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