Method and device for detecting folding condition of tabs

A detection method and technology of detection device, which are applied in the direction of photographing device, photo interpretation, image data processing, etc., can solve problems such as hidden safety hazards, cracks, and wrinkles, and achieve the effect of avoiding accident risks.

Inactive Publication Date: 2019-12-03
JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the tab 2 is upturned, a crescent-shaped crease 4 (located on the tab 2) will be formed between the two arc corners 3. After the crease is generated, the arc corners 3 on both sides of the tab 2 will easily Wrinkles and cracks appear
When the upturn is serious, the tab 2 will be bent, and the bent tab 2 may be folded and contact the main body of the pole piece 1 during the winding process, which will cause a short circuit after being made into a finished battery, posing a great safety hazard
[0004] In the actual manufacture of lithium-ion batteries, the tabs in the finished product may have been bent. In the laboratory, the tabs are corrected by manual inspection, but there is no better solution for the automated production line.

Method used

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  • Method and device for detecting folding condition of tabs
  • Method and device for detecting folding condition of tabs
  • Method and device for detecting folding condition of tabs

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment provides a method for detecting folding of a tab, which is suitable for application scenarios in the field of tab processing, and can improve the detection efficiency of tab folding. The detection method of tab folding is performed by a detection device , Realized by software and / or hardware.

[0047] figure 2 It is a flowchart of the method for detecting folding of tabs provided in the first embodiment.

[0048] See figure 2 The method for detecting folding of the tab includes the following steps:

[0049] S10: Determine the number of all pole piece bodies 1 as the predetermined number of layers.

[0050] Specifically, generally, the pole piece body 1 is not prone to bending, and the number of electrode pole pieces should be the same as the pole piece body 1, so the number of pole piece bodies 1 can be used as a standard.

[0051] Preferably, the predetermined number of layers can be manually input to the detection device, or the number of layers of the pole p...

Embodiment 2

[0069] The detection device provided in this embodiment can be used to implement the method for detecting folding of tabs provided in the embodiment of the present invention, and has corresponding functions and beneficial effects.

[0070] Image 6 It is a schematic diagram of the structure of the detection device provided in this embodiment.

[0071] See Image 6 , A detection device, including:

[0072] The unwinding platform 6 is used to place a number of electrode pads with the same shape and size and stacked and aligned from top to bottom; the electrode pads include a pole piece body 1 and a tab 2, and all the tabs 2 are stacked into tabs 2 teams;

[0073] The image acquisition module 7 is used to acquire the stacked image corresponding to the stacking side surface 5 of the end of the pole piece 2 that is away from the pole piece main body 1;

[0074] An image recognition module for obtaining the number of layers of the tab 2 in the laminated image;

[0075] The calculation modul...

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PUM

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Abstract

The invention relates to the technical field of tab processing and particularly discloses a method and device for detecting the folding condition of tabs. The method comprises a step of stacking and aligning a plurality of electrode pole pieces with the same shape and size from the top to the bottom, wherein the electrode pole pieces comprise pole piece bodies and tabs, and all the tabs are stacked into a tab group, a step of obtaining a stacking image corresponding to a stacking side surface of one end of the tab group away from the pole piece bodies, a step of obtaining the number of tab layers in the stacking image, and a step of determining the number of bent tabs in the tab group according to the number of the tab layers. The invention provides a method and a device for detecting thefold of the tabs, the folding condition of the tabs can be detected, and possible subsequent accident risks are avoided.

Description

Technical field [0001] The invention relates to the technical field of tab processing, in particular to a method and device for detecting the folding of tabs. Background technique [0002] Lithium-ion batteries generally include positive pole pieces and negative pole pieces. Take the positive pole piece as an example for illustration, see figure 1 The positive pole piece generally includes a pole piece body 1 coated with an active material and a lug 2 on the top of the pole piece body 1. The lug 2 is obtained by cutting the pole piece body 1 through a die-cutting process on the production line. It is trapezoidal. Generally, the connecting corner between the tab 2 and the active material on the pole piece body 1 is a circular arc angle 3. [0003] It is understandable that in the production line, the pole piece main body 1 is often continuous and is driven by a driving roll, so it will be pulled forward, while the pole lug 2 mainly relies on its integration with the pole piece mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/04G01C11/02G06T7/00
CPCG01C11/02G01C11/04G06T7/0004
Inventor 刘飞马笑笑金敏
Owner JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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