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Secondary battery which detects displacement of gas discharge part to prevent battery cell swelling, system for charging secondary battery, and method for manufacturing secondary battery

A technology for gas discharge, secondary battery

Inactive Publication Date: 2018-02-23
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the case of the pouch type lithium secondary battery, as described above, the weight of the battery can be reduced, but the pouch type lithium secondary battery has the following problems: the strength of the foil-type metal layer forming the outer layer of the pouch is weak, so that it is impossible to sufficiently withstand the pressure of the internal gas
However, in the existing research, only a device for exhausting the gas in the battery is simply provided, or the strain gauge is directly installed in the electrode assembly, so that the thickness of the battery is increased.

Method used

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  • Secondary battery which detects displacement of gas discharge part to prevent battery cell swelling, system for charging secondary battery, and method for manufacturing secondary battery
  • Secondary battery which detects displacement of gas discharge part to prevent battery cell swelling, system for charging secondary battery, and method for manufacturing secondary battery
  • Secondary battery which detects displacement of gas discharge part to prevent battery cell swelling, system for charging secondary battery, and method for manufacturing secondary battery

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Embodiment Construction

[0038] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Herein, repeated descriptions and detailed descriptions of well-known functions and constructions that may unnecessarily obscure the gist of the present invention will be omitted. The exemplary embodiments of the present invention are provided in order to more fully explain the present invention to those skilled in the art. Therefore, shapes, sizes, etc. of elements in the drawings may be exaggerated for clearer explanation.

[0039] In this specification and claims, unless an explicit description to the contrary is given, the word "comprises / comprises" and variations such as "comprises / comprises" or "comprises / has" all mean that other constituent elements are also included. , without excluding other constituent elements.

[0040] Here, the term '...unit' described in this specification means a unit for processing at least one function and operation, and may be ...

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Abstract

The invention discloses a secondary battery which detects displacement of a gas discharge part to prevent battery cell swelling, a system for charging a secondary battery, and a method for manufacturing a secondary battery. The present invention relates to a secondary battery which detects a displacement of a gas discharge part to prevent a battery cell swelling, a system for charging the secondary battery, and a method for manufacturing the secondary battery, the secondary battery comprising: a gas discharge part disposed at one end of a sealing part, which seals an electrode assembly, and having an adhesive strength weaker than that of the other adhesive portion of the sealing part to induce a discharge of gas therethrough; and a sensor unit which detects a displacement occurring in thegas discharge part to generate an electrical signal.

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2015-0153078 filed with the Korean Intellectual Property Office on Nov. 2, 2015, the entire contents of which are incorporated herein by reference. [0002] The present invention relates to a secondary battery that detects the displacement of a gas discharge part and prevents expansion of a battery cell, and a system and method for charging the secondary battery, and more particularly, to a secondary battery and a battery for charging the secondary battery A battery charging system and a method of manufacturing a secondary battery including: a gas discharge portion at one end of a sealing portion sealing an electrode assembly and weakened by an attachment portion other than the sealing portion inducing discharge of gas in combination with force; and a detection part that detects displacement generated in the gas discharge part and generates an electric signal to induce dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/44H01M10/058H02J7/00H01M50/55H01M50/557H01M50/583
CPCH01M10/445H01M10/48H01M2200/103Y02E60/10H01M50/557H01M50/124H01M50/3425Y02P70/50H01M50/583H01M50/55H01M10/0585H01M10/44H01M2200/00
Inventor 李沅泰崔良林
Owner LG ENERGY SOLUTION LTD
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