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Battery cell and method for manufacturing same

A technology for battery cells and electrode assemblies, applied in secondary battery manufacturing, electrical components, secondary batteries, etc., can solve problems such as dead volume, and achieve the effects of preventing insulation failure, preventing excessive diffusion, and improving adhesion reliability.

Pending Publication Date: 2020-09-25
SK ON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, conventional pouch-type secondary batteries are sealed on three or four surfaces, and the thus-formed sealing portion inevitably causes a dead volume in which no power is generated.

Method used

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  • Battery cell and method for manufacturing same
  • Battery cell and method for manufacturing same
  • Battery cell and method for manufacturing same

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Embodiment Construction

[0032] Before describing the present invention in detail, the terms or words used in the specification and claims described below should not be construed as limited to conventional or dictionary meanings, but should be based on the inventor's choice in order to describe his invention in the best way. Principles that can be appropriately defined as concepts of terms are interpreted as meanings and concepts that conform to the technical idea of ​​the present invention. Therefore, the embodiments described in this specification and the configuration shown in the accompanying drawings are only the most preferred embodiments of the present invention, and do not represent all technical ideas of the present invention, so it should be understood that this application may have various alternatives that can replace them. Equivalents and modifications.

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawi...

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Abstract

A battery cell according to an embodiment of the present invention comprises an electrode assembly; a case including a reception part for receiving the electrode assembly and a sealing part formed along the periphery of the reception part; and a fixing member interposed between the reception part and the sealing part and bonding the reception part and the sealing part to each other, wherein the fixing member includes a core layer and adhesive layers staked on both surfaces of the core layer, respectively.

Description

technical field [0001] The invention relates to battery cells with maximum internal space. Background technique [0002] Lithium secondary batteries have an operating voltage of 3.6 V or more, and are used as power sources for portable electronic devices, or in high-power hybrid vehicles by connecting a plurality of lithium secondary batteries in series. The lithium secondary battery has an operating voltage three times that of a nickel-cadmium battery or a nickel-metal hydride battery, and has a higher energy density per unit weight. In view of this, the current trend is that the use of lithium secondary batteries is rapidly increasing. [0003] Generally, lithium secondary batteries are manufactured in units of battery cells, and can be classified into can-type secondary batteries in which electrode assemblies are assembled in metal cans and pouch-type secondary batteries in which electrode assemblies are assembled in pouches of aluminum laminates. lithium battery. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02C09J175/04C09J5/02C09J5/06H01M50/105H01M50/121H01M50/136
CPCC09J5/06C09J175/04Y02E60/10C09J2203/33C09J2301/124C09J2467/006C09J2475/00H01M10/0413H01M10/0585Y02P70/50H01M50/105H01M50/121H01M50/136C09J5/02H01M10/049H01M50/197
Inventor 金镇高金东洲李承鲁
Owner SK ON CO LTD
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