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Electrode having improved electrode tab welding characteristic and secondary battery comprising same

A secondary battery and electrode technology, applied in the field of electrodes with improved welding characteristics of electrode tabs and secondary batteries including the electrodes

Active Publication Date: 2019-10-11
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a secondary battery electrode configured such that the shape of the uncoated electrode tab is improved to avoid the uncoated electrode tab from being cut off after welding, thereby solving the above-mentioned problems, and a secondary battery including the secondary battery electrode have not yet been proposed.

Method used

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  • Electrode having improved electrode tab welding characteristic and secondary battery comprising same
  • Electrode having improved electrode tab welding characteristic and secondary battery comprising same
  • Electrode having improved electrode tab welding characteristic and secondary battery comprising same

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Embodiment Construction

[0049] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that the preferred embodiments of the present invention can be easily carried out by those of ordinary skill in the art to which the present invention pertains. However, in describing the operation principle of the preferred embodiment of the present invention in detail, when a detailed description of known functions and constructions incorporated herein may obscure the subject matter of the present invention, the detailed description will be omitted.

[0050] Wherever possible, the same reference numerals will be used throughout the drawings to refer to parts performing similar functions or operations. In addition, in the case where a part is "connected" to another part in the following description of the present invention, not only the part may be directly connected to the other part, but the part may also be indirectly connected to the other p...

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Abstract

The present invention relates to an electrode having an improved electrode tab welding characteristic, which includes one or more non-coated-part electrode tabs of the same polarity stacked on each other to maintain welding safety regardless of an increase in the number of stacked electrode layers in order to realize high output and high capacity, and a secondary battery comprising the same. The present invention can prevent disconnection which may occur when a plurality of electrode tabs are welded. Also, in the present invention, a lower end portion of an electrode lead, which is to be welded to the non-coated-part electrode tabs of the same polarity stacked on each other, is pressed to correspond to the non-coated-part electrode tabs. Therefore, the present invention can enhance the flexibility of an electrode step difference in a secondary battery.

Description

technical field [0001] This application claims the benefit of Korean Patent Application No. 2017-0115201 filed with the Korean Intellectual Property Office on September 8, 2017, the disclosure of which is incorporated herein by reference in its entirety. [0002] The present invention relates to an electrode having improved electrode tab welding characteristics and a secondary battery comprising the electrode, and more particularly to a configuration such that a plurality of stacked electrodes having the same polarity are provided with one or more uncoated electrodes. An electrode with improved electrode tab welding characteristics and a secondary battery including the electrode that covers electrode tabs to maintain welding safety while increasing the number of stacked electrode layers to achieve high output and high capacity. Background technique [0003] In general, there are various secondary batteries such as nickel-cadmium batteries, nickel-hydrogen batteries, lithium-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26B23K20/10B23K101/38H01M50/536H01M50/538
CPCB23K20/10Y02E60/10H01M50/538H01M50/536Y02P70/50H01M50/54B23K2101/38H01M2220/20H01M2220/10H01M2220/30H01M50/533H01M2004/027H01M2004/028
Inventor 金泰坤徐承烨申晟均李南奎崔荷娜
Owner LG ENERGY SOLUTION LTD
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