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Inspection device and winding device

A technology for inspecting devices and winding components, applied to measuring devices, adopting optical devices, winding/folding electrodes, etc., can solve problems such as inability to judge correctly

Active Publication Date: 2021-10-29
CKD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a danger that the quality of the wound element cannot be accurately judged.

Method used

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  • Inspection device and winding device
  • Inspection device and winding device
  • Inspection device and winding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] One embodiment will be described below with reference to the drawings. First, the structure of a lithium ion battery element as a wound element obtained by a winding device will be described.

[0066] picture figure 1 and figure 2 As shown, a lithium ion battery element 1 (hereinafter simply referred to as "battery element 1") is produced by sandwiching two separator sheets 2, 3, a positive electrode sheet 4, and a negative electrode sheet. 5 is wound in a superimposed state. In the following, when the separator sheets 2 and 3 and the electrode sheets 4 and 5 are collectively referred to, they are referred to as "various sheets 2 to 5".

[0067] The separators 2 and 3 are strip-shaped with the same width, and are made of insulating material such as polypropylene (PP) to prevent the different electrode sheets 4 and 5 from contacting and short-circuiting. Separators 2, 3 are transparent or translucent. Thus, the positive electrode sheet 4 and the negative electrode ...

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PUM

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Abstract

An object of the present invention is to provide an inspection device, etc., in which it is possible to more accurately determine whether or not the quality of a wound element is good, and to sufficiently improve the reliability of the inspection. The inspection device takes various sheets wound on a core as inspection objects, and the inspection device includes: an illumination device that irradiates light to the inspection object; a camera that takes an image of the inspection object that is irradiated with light by the illumination device; A good judgment mechanism; a continuous imaging implementation mechanism, which continuously captures images of the inspection object through a camera in a state where various sheets are wound by a winding core; a focus retrieval mechanism, which detects whether the camera The image that is in focus. The cross section of the outer peripheral surface on which the various sheets are wound in the core has a non-circular shape. The goodness judgment means judges whether the inspection object is good or not based on the image detected by the focus search means.

Description

technical field [0001] The present invention relates to an inspection device for inspecting a winding element used in a secondary battery and the like, and a winding device provided with the inspection device. Background technique [0002] As a wound element, the type used for the secondary battery, such as a lithium ion battery, is known. Such a wound element is manufactured in such a manner that a separator sheet for insulating the two electrode sheets is interposed between a positive electrode sheet coated with a positive electrode active material and a negative electrode sheet coated with a negative electrode active material. The state is wound by a rotatable core. [0003] However, during the winding of each sheet, there is a risk of misalignment in the sheet width direction of the structure of the winding element such as sheet winding deviation (sheet width direction displacement) or active material application position deviation. Such misalignment causes, for exampl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/88H01M10/0587
CPCG01N21/88H01M10/0587G01B11/24G01B11/2408G01B11/2522G01N21/8422G01N21/892G01N21/952H01M10/0404H01M10/0431Y02E60/10Y02P70/50
Inventor 二村伊久雄
Owner CKD