JP-7855062-B2 - Strip feeding detection method, apparatus, laminating machine, equipment, and medium for laminating machine

JP7855062B2JP 7855062 B2JP7855062 B2JP 7855062B2JP-7855062-B2

Inventors

趙柏全
李紅円
馮仕平
鄭秋輝
陳燦斌
戴亜

Assignees

香港時代新能源科技有限公司

Dates

Publication Date: 20260507
Application Date: 20220412

Claims (20)

A strip feeding detection method for a laminating machine, wherein the strip includes a plurality of first electrode sheets continuously distributed in the feeding direction, and the method is Acquire at least one strip image using at least one imaging device, To determine whether the aforementioned strip image includes the first mark and the second mark, The process includes, in response to a determination that the strip image contains the first mark and the second mark, obtaining a target displacement amount of the first mark relative to a predetermined position based on the strip image, The strip image includes a detection region between at least two adjacent first electrode sheets. The first mark is a notch hole provided within the detection area, A strip feeding detection method for a laminating machine, wherein the second mark is a fold formed on the front of the detection area and indicates a composite position on the strip of an electrode sheet with polarity opposite to that of the first electrode sheet.
The aforementioned method, Before taking a picture with the at least one imaging device, the emitted light illuminates a positive light source projected onto the front of the detection area, and/or The method according to claim 1, further comprising illuminating a back light source on which the emitted light is projected onto the back of the detection area.
The first mark includes a first notch and a second notch located on opposite sides of the strip in a direction perpendicular to the feeding direction, the detection region includes a first detection region and a second detection region located between two adjacent first electrode sheets, the first notch is located within the first detection region, and the second notch is located within the second detection region. The method wherein the at least one imaging device includes a first imaging device and a second imaging device, and the strip image includes a first detection image obtained by imaging the front of the first detection area with the first imaging device and a second detection image obtained by imaging the front of the second detection area with the second imaging device. Obtaining the target displacement amount of the first mark relative to a predetermined position based on the aforementioned strip image is: The method according to claim 1, comprising obtaining the target displacement amount based on the first detection image and/or the second detection image in response to a determination that the first detection region and the second detection region contain the first mark and the second mark.
Obtaining the target displacement amount based on the first detection image and/or the second detection image is: Based on the first detection image, the first displacement amount of the first notch hole relative to a predetermined position is obtained, Based on the second detection image, the second displacement amount of the second notch hole relative to the predetermined position is obtained, The method according to claim 3, comprising obtaining the target displacement amount based on the first displacement amount and the second displacement amount.
Obtaining the target displacement amount based on the first displacement amount and the second displacement amount is, The method according to claim 4, comprising obtaining the target displacement amount based on the first displacement amount and the second displacement amount in response to the absolute value of the difference between the first displacement amount and the second displacement amount being less than or equal to a predetermined threshold.
The method according to claim 4, further comprising outputting reminder information in response to the absolute value of the difference between the first deviation amount and the second deviation amount being greater than a predetermined threshold.
The method according to claim 3, further comprising outputting reminder information in response to a determination that the first mark is not included in at least one of the first detection area and the second detection area.
The detection region includes a first detection region and a second detection region located between two adjacent first electrode sheets, and the second mark includes a first marking portion located within the first detection region and a second marking portion located within the second detection region, Determining whether the strip image includes the second mark is: To detect whether the first detection image includes the first marking portion, To detect whether the second detection image includes the second marking portion, The method according to claim 3, further comprising determining whether or not the second mark is included on the front of the detection area based on the detection result for the first marking portion in the first detection image and the detection result for the second marking portion in the second detection image.
Determining whether or not the second mark is included on the front of the detection area is: The method according to claim 8, comprising determining that the first detection image includes the first marking portion and the second detection image includes the second marking portion, and confirming that the second mark is included on the front of the detection region.
The aforementioned method, The method according to claim 8, further comprising outputting reminder information in response to a determination that the second mark is not included in either the first detection image or the second detection image.
The aforementioned method, The method according to claim 8, further comprising determining, in response to the determination that neither the first detection image nor the second detection image contains the second mark, that the back surface of the detection area contains the second mark.
The aforementioned at least one imaging device includes two sets of imaging devices installed at a predetermined distance apart, and imaging is performed by the aforementioned at least one imaging device. The front of the detection area between two adjacent first electrode sheets is photographed with one of the imaging devices, The method according to claim 1, comprising photographing the back surface of the detection area between two adjacent first electrode sheets with another set of imaging devices.
The method according to any one of claims 1 to 12, wherein the target displacement amount includes the displacement amount of the first mark relative to a predetermined position in the feeding direction.
The method according to any one of claims 1 to 12, wherein the position of at least one imaging device is fixed, and the predetermined position is the optical center of the corresponding imaging device.
A strip feeding detection device for a laminating machine, wherein the strip includes a plurality of first electrode sheets continuously distributed in the feeding direction, and the device is At least one imaging device arranged to photograph the strip and obtain at least one strip image, The system includes an image processing apparatus configured to determine whether the strip image includes a first mark and a second mark, and in response to the determination that the strip image includes the first mark and the second mark, to determine the target displacement amount of the first mark relative to a predetermined position based on the strip image, wherein the strip image includes a detection region between at least two adjacent first electrode sheets. The first mark is a notch hole provided within the detection area, The strip feeding detection device for a laminating machine is a strip feeding detection device in which the second mark is formed on the front of the detection area and indicates a composite position on the strip of an electrode sheet with polarity opposite to that of the first electrode sheet.
The aforementioned image processing device is A first determining unit is positioned to determine whether the strip image includes the first mark and the second mark, The apparatus according to claim 15, further comprising: an acquisition unit arranged to acquire a target displacement amount of the first mark relative to a predetermined position based on the strip image, in response to a determination that the strip image contains the first mark and the second mark.
The apparatus according to claim 15, wherein the target displacement amount includes the displacement amount of the first mark relative to a predetermined position in the feeding direction.
The apparatus according to claim 16, wherein the strip image includes a detection region between at least two adjacent first electrode sheets.
The aforementioned device is Front light source and back light source, The apparatus according to claim 18, further comprising: a first controller, which, before imaging with at least one imaging device, is configured to illuminate a positive light source whose emitted light is projected onto the front of the detection area, and/or to illuminate a back light source whose emitted light is projected onto the back of the detection area.
The first mark includes a first notch and a second notch located on opposite sides of the strip in a direction perpendicular to the feeding direction, the detection region includes a first detection region and a second detection region located between two adjacent first electrode sheets, the first notch is located within the first detection region, and the second notch is located within the second detection region. The at least one imaging device includes a first imaging device and a second imaging device, and the strip image is an apparatus that includes a first detection image obtained by imaging the front of the first detection area with the first imaging device and a second detection image obtained by imaging the front of the second detection area with the second imaging device. The apparatus according to claim 19, wherein the acquisition unit is arranged to acquire the target displacement amount based on the first detection image and/or the second detection image in response to a determination that the first mark is included in the first detection area and the second detection area.

Description

This application relates to the technology of batteries, and more particularly to a strip feeding detection method, apparatus, laminating machine, equipment, and medium for a laminating machine. Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, with their energy-saving and environmentally friendly advantages, are an important part of this sustainable development. Battery technology is also a crucial element for the development of electric vehicles. In the manufacturing process of power batteries, lamination is a crucial step. Lamination involves stacking continuous belt-shaped electrode sheets into a multi-layered rectangular parallelepiped structure, primarily using the free lamination method and the continuous lamination method. In the continuous lamination method, the strip feeding process requires efficient determination of the misalignment of the strip's notches and the combined position of the composite electrode sheets. Unless otherwise specified, the same reference numeral in multiple drawings indicates the same or similar part or element. These drawings are not necessarily drawn to scale. These drawings depict only some of the embodiments disclosed herein and should not be considered to limit the scope of this application. This is a schematic diagram of the structure of the negative electrode strip before the positive electrode sheet is combined with the positive electrode sheet of some embodiments of the present application.This is a schematic diagram of the structure of a negative electrode strip after combining positive electrode sheets of several embodiments of the present application.This is a cross-sectional view of the strip in Figure 2, along the feeding direction.This is a block diagram of a flowchart of a strip feeding detection method for a laminating machine according to several embodiments of the present invention.This is a schematic diagram of strip images collected by the imaging apparatus of several embodiments of the present application.This is a flowchart block diagram of a method for detecting a first mark and a second mark in a strip image using an image processing algorithm according to some embodiments of the present application.This is a block diagram of a flowchart illustrating a method for calculating the target displacement amount based on the position of a first mark in several embodiments of the present application.This is a schematic diagram of the detection region between two adjacent electrode sheets in some embodiments of the present application.This is a block diagram of a flowchart for a method of obtaining a target displacement amount based on a first detection image and/or a second detection image in some embodiments of the present application.This is a flowchart block diagram of a method for determining whether or not a strip image of several embodiments of the present application contains a second mark.This is a block diagram of a flowchart of a strip feeding detection method for a laminating machine according to several embodiments of the present invention.This is a structural block diagram of a strip feeding detection device for a laminating machine according to several embodiments of the present invention.This is a schematic diagram of the local structure of a strip feeding detection device along the feeding direction in some embodiments of the present application.This is a schematic diagram of the local structure of a strip feeding detection device along a direction perpendicular to the feeding direction in some embodiments of the present application.This is a schematic diagram of the structure of a strip feeding detection device according to several embodiments of the present application.This is a schematic diagram of the local structure of a strip feeding detection device along the feeding direction in some embodiments of the present application.This is a schematic diagram of the local structure of a strip feeding detection device along a direction perpendicular to the feeding direction in some embodiments of the present application.This is a schematic diagram of the structure of a strip feeding detection device for a laminating machine according to several embodiments of the present invention. The following examples of embodiments of the present invention will be described in detail with reference to the drawings. These embodiments are merely illustrative and intended to provide a clearer explanation of the present invention; they should not limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Terms used herein are solely for the purpose of describing specific embodiments and are not intended to limit this application. The terms “including” and “having,” and any variations thereof, in the description, claims, and brief des