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Lamination apparatus and method, and equipment for manufacturing secondary battery comprising same

A technology of lamination device and electrode, applied in the direction of secondary battery manufacturing, lamination device, secondary battery, etc., can solve the problems of reduced efficiency, long time heating electrode assembly, etc., to improve heat transfer efficiency and prevent distortion , the effect of preventing deformation and damage

Active Publication Date: 2021-11-05
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the lamination process, it takes a long time to heat the electrode assembly because the heating device transmits radiant heat
In particular, since the heating area of ​​​​the heating device must be ensured to be large, there is a problem of a significant decrease in efficiency

Method used

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  • Lamination apparatus and method, and equipment for manufacturing secondary battery comprising same
  • Lamination apparatus and method, and equipment for manufacturing secondary battery comprising same
  • Lamination apparatus and method, and equipment for manufacturing secondary battery comprising same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0109] The electrode assembly is heated using lamination means including contact or direct pressure heating means. That is, the electrode assembly is directly heated by the laminating device according to the first embodiment of the present invention. At this time, the lamination apparatus according to the first embodiment of the present invention heats the electrode assembly by using four heating rollers.

[0110] Here, in Comparative Example and Production Example 1, the same electrode assembly was used, and the same pressure, the same heating time, and the same temperature were applied. The same temperature is 110°C.

[0111] Heating

[0112] As a result of measuring the temperature of the electrode assembly heated by Comparative Example and Production Example 1, it was obtained Figure 7 of the graph.

[0113] refer to Figure 7 When measuring the time for the temperature of the electrode assembly heated by Comparative Example and Manufacturing Example 1 to reach 60°...

experiment example 2

[0116] In Manufacturing Example 2, a method of directly heating the electrode assembly by using a heating device for contact or direct pressure was performed. That is, the electrode assembly is directly heated by the laminating device according to the first embodiment of the present invention. At this time, the laminating apparatus according to the first embodiment of the present invention heats the electrode assembly by using four heating rollers.

[0117] In particular, four heating rollers were set to 70°C, 90°C, and 100°C to perform three experiments.

[0118] Heating

[0119] In Manufacturing Example 2, when three experiments were performed at temperatures of 70°C, 90°C, and 100°C, as Figure 9 As shown in , a graph of the gradual increase in temperature of the electrode assembly can be obtained.

[0120] That is, if Figure 9As shown in , when all four heating rollers are set to 70°C, it can be seen that the surface temperature of the electrode assembly gradually i...

experiment example 3

[0123] In Manufacturing Example 3 and Manufacturing Example 4, a method of directly heating the electrode assembly by using a heating device of contact or direct pressure was performed. That is, the electrode assembly is directly heated by the laminating device according to the first embodiment of the present invention.

[0124] Here, in Manufacturing Example 3, the electrode assembly conveyed at the first speed was heated by using three heating rollers. In Manufacturing Example 4, the electrode assembly conveyed at the second speed faster than the first speed was heated by using three heating rollers.

[0125] Here, all three heating rollers described in Manufacturing Example 3 and Manufacturing Example 4 were set to a temperature of 100°C.

[0126] Heating

[0127] As a result of the experiments described above, as Figure 10 As shown in , in Manufacturing Example 3, it can be seen that the surface temperature of the electrode assembly increased to 43°C, 56°C, and 65°C....

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Abstract

The present invention relates to a lamination apparatus for bonding an electrode assembly including an electrode and a separator, comprising: a transfer part for transferring an electrode assembly; a heating roller part for heating the electrode assembly transferred by the transfer part; and a rolling roller for rolling and bonding the electrode assembly heated by the heating roller part, wherein the heating roller part includes a plurality of heating rollers that simultaneously heat and press the surface of the electrode assembly, wherein the plurality of heating rollers gradually increase the temperature of the electrode assembly by sequentially heating and pressing simultaneously the surface of the electrode assembly.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of priority of Korean Patent Application No. 10-2018-0154583 filed on December 4, 2018, which is hereby incorporated by reference in its entirety. [0003] The present invention relates to a lamination device and a lamination method, and secondary battery manufacturing equipment including the lamination device, and more particularly, to a method for directly heating an electrode assembly in which electrodes and separators are alternately laminated to improve heat transfer efficiency Lamination device and lamination method, and secondary battery manufacturing equipment including the lamination device. Background technique [0004] In general, secondary batteries refer to batteries that are rechargeable and dischargeable, unlike primary batteries that are not rechargeable. Such secondary batteries are widely used in high-tech electronic fields such as mobile phones...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04
CPCY02P70/50H01M10/0404H01M10/0481H01M10/615H01M10/486Y02E60/10H01M50/46H01M50/566B32B37/0053
Inventor 金玟旭金元年表廷官具滋训李秉揆
Owner LG ENERGY SOLUTION LTD