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Secondary battery

A technology for secondary batteries and electrode assemblies, applied in secondary batteries, battery pack components, battery boxes/jackets, etc., can solve the problems of high battery can manufacturing costs, reducing can thickness limitations, and can thickness deviations, etc. Achieve the effect of increasing capacity, large charging/discharging capacity, and reducing thickness

Active Publication Date: 2020-08-07
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, both the conventional deep drawing process and the conventional impact process are limited in reducing the thickness of the tank due to their respective manufacturing process characteristics, and may have large deviations in the thickness of the tank according to the area of ​​the tank
In addition, the problem with the conventional deep drawing process and the conventional impact process is that the manufacturing cost of the battery can is very high

Method used

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Embodiment Construction

[0041] Here, some example embodiments of the present invention will be described in further detail.

[0042] Various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the example embodiments set forth herein. Rather, these example embodiments of the present disclosure are provided so that this disclosure will be thorough and complete, and will convey the inventive concept of the present disclosure to those skilled in the art.

[0043] Also, in the drawings, the size or thickness of various components may be exaggerated for conciseness and clarity. Like reference numerals refer to like elements throughout. In addition, it will be understood that when element A is referred to as being "connected to" element B, element A may be directly connected to element B, or one or more intervening elements C may be present, and element A and element B may be indirectly connected to each other.

[0044] The terminology used herei...

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Abstract

A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly; and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, longside portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, and second short side portions bent and extended from the long side portions, and the first short side portion and the second short side portions are connected to one another to define a short side portion.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2019-0012371 filed in the Korean Intellectual Property Office on January 31, 2019, the entire contents of which are incorporated herein by reference. technical field [0003] Aspects of embodiments of the present invention relate to secondary batteries. Background technique [0004] According to the shape of the can or case, the battery can be classified into a prismatic type, a cylindrical type, a pouch type, and the like. A prismatic or cylindrical battery can be manufactured by inserting an electrode assembly with a positive electrode, a negative electrode, and a separator into a metal can and sealing the electrode assembly, while a pouch-type battery can be made by encapsulating the electrode assembly using aluminum foil coated with an insulator to manufacture. [0005] Traditional battery can manufacturing methods can include deep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M50/103
CPCH01M50/103Y02E60/10H01M50/10H01M50/133H01M50/119H01M10/0525
Inventor 吴大植秦尙暎
Owner SAMSUNG SDI CO LTD