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Secondary battery and method for manufacturing same

A secondary battery and electrode technology, applied in the secondary battery and its manufacturing field, can solve the problems of lower energy density, lower integration of electrode components, etc., and achieve the effect of improving integration and simplifying process

Pending Publication Date: 2022-05-27
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, secondary batteries must secure enough space to accommodate electrode tabs and electrode leads, and therefore, there is a problem that the degree of integration of the electrode assembly housed in the can is greatly reduced, and therefore, the energy density is reduced

Method used

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  • Secondary battery and method for manufacturing same
  • Secondary battery and method for manufacturing same
  • Secondary battery and method for manufacturing same

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Embodiment Construction

[0044]Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that the technical idea of ​​the present invention can be easily implemented by those of ordinary skill in the technical field to which the present invention pertains. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, for the sake of clarity, anything that is not necessary to describe the invention will be omitted, and like reference numerals in the drawings refer to like elements.

[0045] [Secondary battery according to the first embodiment of the present invention]

[0046] like Figure 1 to Figure 4 As shown in , the secondary battery according to the first embodiment of the present invention includes an electrode assembly 100 , a can 200 that accommodates the electrode assembly 100 , and a cap member 300 installed in an opening of th...

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Abstract

A secondary battery, the secondary battery including: an electrode assembly including: a first electrode bent in a zigzag shape; a second electrode bent in a zigzag shape so as to overlap with the first electrode; and a diaphragm bent in a zigzag shape so as to be interposed between the first electrode and the second electrode, a can configured to accommodate the electrode assembly; and a cap member mounted in an opening of the canister, in which an upper end of the first electrode is disposed at an uppermost end of the electrode assembly so as to extend longer than the second electrode, a lower end of the second electrode is disposed at a lowermost end of the electrode assembly so as to extend longer than the first electrode, and a lower end of the second electrode is disposed at a lowermost end of the electrode assembly so as to extend longer than the first electrode. The upper end of the first electrode is provided with a first protrusion combined with the cap member, and the lower end of the second electrode is provided with a second protrusion combined with the can.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority from Korean Patent Application No. 10-2020-0060586 filed on May 20, 2020, the entire contents of which are incorporated herein by application. technical field [0003] The present invention relates to a secondary battery with simplified energy density and process and a manufacturing method thereof. Background technique [0004] Generally speaking, a secondary battery refers to a rechargeable and dischargeable battery, which is different from a non-rechargeable primary battery. Secondary batteries are widely used in high-tech electronics such as cell phones, notebook computers, and video cameras. [0005] Such secondary batteries are classified into can-type secondary batteries and pouch-type secondary batteries, the former having an electrode assembly built into a metal can, and the latter having an electrode assembly built into a pouch. The can-type secondary battery includes: an elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/533H01M50/528H01M10/04
CPCH01M50/533H01M50/528H01M10/0431H01M50/172H01M50/148H01M50/116H01M50/15H01M10/045H01M50/531Y02E60/10Y02P70/50H01M10/04H01M50/10H01M50/147
Inventor 尹洙铉郑凡永
Owner LG ENERGY SOLUTION LTD
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