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Method for Determination of Laser Transmission Characteristic Value

A technology of transmission characteristics and determination methods, applied in laser welding equipment, structural parts, battery box/sleeve materials, etc., can solve the problems that labels do not have other functions, increase material costs, etc.

Active Publication Date: 2021-12-14
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, since the labels serve no other function than the lettering of the corresponding battery cell, this adds unnecessary material cost

Method used

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  • Method for Determination of Laser Transmission Characteristic Value
  • Method for Determination of Laser Transmission Characteristic Value
  • Method for Determination of Laser Transmission Characteristic Value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Next, a laser transmission characteristic value determination method according to an embodiment of the present invention will be described.

[0041] The laser transmission characteristic value determination method according to an embodiment of the present invention uses a laser with a set optional transmission characteristic value to mark letters in a heat-shrinkable tube, and after applying heat, checks the font size, and adjusts the transmission characteristic value so that the font size The set font size is reached. Therefore, the readability of the letters marked on the heat shrink tubing can be increased, so that the label configuration can be eliminated.

[0042] figure 2 is a flowchart of a method for determining a laser transmission characteristic value according to an embodiment of the present invention.

[0043] refer to figure 2 , in the laser transmission characteristic value determination method according to the embodiment of the present invention, the...

Embodiment 2

[0063] Next, a laser transmission characteristic value determination method according to another embodiment of the present invention will be described.

[0064] According to a laser transmission characteristic value determining method according to another embodiment of the present invention, a laser having an arbitrarily set transmission characteristic value is used to mark a readout symbol formed by a predetermined number of lines in a heat-shrinkable tube, and after applying heat, check The number of lines of the symbol is read out and the transmission characteristic value is adjusted to recognize the number of lines as a predetermined number to ensure accurate laser transmission characteristic values.

[0065] image 3 is a flowchart of a method for determining a laser transmission characteristic value according to another embodiment of the present invention.

[0066] refer to image 3 , in the laser transmission characteristic value determining method according to anothe...

Embodiment 3

[0091] Next, a battery cell according to an embodiment of the present invention will be described.

[0092]A battery cell according to an embodiment of the present invention may be configured to include only a heat-shrinkable tube, and the information of the corresponding battery cell is input into the heat-shrinkable tube, and there is no label on the appearance of the case housing the electrode assembly, thus reducing the labeling. The cost of production and shorten the process to achieve fast production.

[0093] Figure 4 is a structural diagram of a battery cell according to an embodiment of the present invention.

[0094] refer to Figure 4 , the battery unit 100 according to an embodiment of the present invention includes: an electrode assembly 110 including an anode, a cathode, and a separator; an electrode assembly case 120 accommodating the electrode assembly; and an electrically insulating heat-shrinkable tube 130 surrounding the electrode assembly case The outer...

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Abstract

The present invention relates to a laser transmission characteristic value determining method, and more particularly, to a method for determining an appropriate transmission characteristic value of laser light so that when a letter is marked on the surface of a heat shrinkable tube formed on the outer periphery of a battery cell, The letter of the mark becomes a predetermined font size or larger by the determination method of the laser transmission characteristic value.

Description

technical field [0001] The present invention relates to a laser transmission characteristic value determining method, and more particularly, to a method for determining an appropriate transmission characteristic value of laser light so that when a letter is marked on the surface of a heat shrinkable tube formed on the outer periphery of a battery cell, The letter of the mark becomes a predetermined font size or larger according to the determination method of the laser transmission characteristic value. Background technique [0002] A lithium secondary battery, which is a unit cell constituting a battery pack, is flexible, has a relatively free shape, is light in weight, and is excellent in safety. Accordingly, there is an increasing demand for lithium secondary batteries for portable electronic devices such as mobile phones, camcorders, and notebook computers. [0003] In addition, the shape of the battery pack is divided according to the shape of the battery case. If the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/359B23K26/00B23K26/02B23K103/00H01M50/133
CPCB23K26/00B23K26/02B23K26/359B23K26/352B23K2103/42H01M50/133B23K26/0006B23K2101/36B23K26/03B23K26/048B23K26/0876H01M50/107H01M50/124
Inventor 李永奎金相珍孙荣洙
Owner LG ENERGY SOLUTION LTD
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