Tab detection mechanism and tab detection device

Patent metadata

Field	Value
Publication number	US-2024171840-A1
Application number	US-202318383928-A
Country	US
Kind code	A1
Filing date	Oct 26, 2023
Priority date	Nov 22, 2022
Publication date	May 23, 2024
Grant date	—

Abstract

This application discloses a tab detection mechanism and a tab detection device. The tab detection mechanism may be configured to detect a tab portion on an electrode core. The tab detection mechanism may include a visual camera; a prism disposed below the visual camera and configured to reflect light on a side surface of the tab portion to the visual camera; and a first driver, connected to the visual camera and configured to drive the visual camera to move in a vertical direction. The visual camera is capable of shooting a plurality of images while moving.

First claim

What is claimed is:

1 . A tab detection mechanism, configured to detect a tab portion on an electrode core, comprising:
a visual camera; a prism, disposed below the visual camera and configured to reflect light on a side surface of the tab portion to the visual camera; and a first driver, connected to the visual camera to drive the visual camera to move in a vertical direction, wherein the visual camera is capable of shooting a plurality of images while moving.

2 . The tab detection mechanism according to claim 1 , characterized in that the visual camera comprises a first bracket connected to the first driver, as well as a camera and a telecentric lens that are disposed on the first bracket, and the telecentric lens and the camera are sequentially disposed above the prism in the vertical direction.

3 . The tab detection mechanism according to claim 2 , characterized in that an included angle between the prism and the vertical direction is 45°.

4 . The tab detection mechanism according to claim 3 , characterized in that a mounting height of the telecentric lens from the prism is greater than or equal to a difference between a working distance of the telecentric lens and a horizontal distance from an upper edge of the prism to the tab portion.

5 . The tab detection mechanism according to claim 3 , characterized in that the tab portion comprises a plurality of tabs stacked in a first direction, a moving distance of the visual camera in the vertical direction is greater than a maximum offset distance of the plurality of tabs in a second direction, and the second direction is perpendicular to the first direction.

6 . The tab detection mechanism according to claim 3 , characterized in that a maximum height difference between the upper edge of the prism and a lower edge of the prism is greater than a view field of the visual camera, and the view field of the visual camera is greater than a total thickness of the tab portion.

7 . The tab detection mechanism according to claim 1 , characterized in that the tab detection mechanism further comprises a second driver, and the second driver is connected to the prism to drive the prism to move in a direction close to or away from the electrode core.

8 . The tab detection mechanism according to claim 7 , characterized in that the second driver is a cylinder, and the second driver is configured to drive the prism to move in the vertical direction.

9 . A tab detection device, configured to detect a first tab portion and a second tab portion on an electrode core, comprising:
a first tab detector to detect an inner side surface of the first tab portion; a second tab detector to detect an outer side surface of the second tab portion; a third tab detector to detect an outer side surface of the first tab portion; and a fourth tab detector to detect an inner side surface of the second tab portion, wherein at least one of the first tab detector, the second tab detector, the third tab detector and the fourth tab detector is the tab detection mechanism according to claim 1 .

10 . The tab detection device according to claim 9 , characterized in that a prism in the second tab detector and a prism in the third tab detector are located on a same second bracket and are arranged opposite to each other.

11 . The tab detection device according to claim 9 , characterized in that a prism in the first tab detector and a prism in the fourth tab detector are arranged in a mirror-image form.

12 . The tab detection device according to claim 9 , characterized in that the tab detection device further comprises a light shield plate and a third driver, the third driver is configured to drive the light shield plate to move, such that the light shield plate is located between the prism of the second tab detector and the prism of the third tab detector, and the light shield plate is a non-transparent plate.

13 . The tab detection device according to claim 12 , characterized in that the light shield plate is a non-transparent plate subjected to matte black processing.

14 . The tab detection device according to claim 9 , characterized in that the tab detection device further comprises a conveyer to convey the electrode core, so that the electrode core sequentially passes through the first tab detector, the second tab detector, the third tab detector and the fourth tab detector.

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Zhang Zhipeng
• Mao Yuyang
• Jiang Ping
• Chen Yong

Classifications

• G06V2201/06

  Recognition of objects for industrial automation · CPC title

• G06V10/14

  Optical characteristics of the device performing the acquisition or on the illumination arrangements · CPC title

• G01N21/89

  in moving material, e.g. running paper or textiles (G01N21/90, G01N21/91, G01N21/94 take precedence) · CPC title

• G01N21/01

  Arrangements or apparatus for facilitating the optical investigation · CPC title

• G01B11/30

  for measuring roughness or irregularity of surfaces · CPC title