Battery cell assembly and battery module for detecting swelling phenomenon thereof

Inactive Publication Date: 2015-12-31
SK INNOVATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about improving the reliability of a battery cell assembly. It includes a battery module that can quickly stop the current flow when a battery cell is overcharged or swelled over a certain level. The invention uses an elongated body part of the strap section that is made of an expandable and contractible material. This allows for easy displacement in response to swelling of the battery cell.

Problems solved by technology

The pouch-type cell unit has an electrolyte injected in a cell thereof, so that, if the cell is overcharged, a swelling phenomenon occurs in the cell so that internal voltage increases and the electrolyte is decomposed due to overheating, which causes a combustible gas to be generated in the cell and results in swelling of the pouch itself.
Further, a separator membrane between an anode and a cathode may be fused so that the anode and cathode are short-circuited causing a fire.
Thus, it impossible to ensure the stability of a pouch-type cell based on the conventional art.
However, the safety device of Patent Document 1 can break a circuit only when the switch part and the operation-inducing part an brought into reliable contact with each other.

Method used

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  • Battery cell assembly and battery module for detecting swelling phenomenon thereof
  • Battery cell assembly and battery module for detecting swelling phenomenon thereof
  • Battery cell assembly and battery module for detecting swelling phenomenon thereof

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Embodiment Construction

[0045]Hereinbelow, a description will be made in detail of a battery module capable of detecting swelling of a battery cell assembly according to the present invention with reference to the accompanying drawings.

[0046]The advantages and features of the present invention, and a method for implementing the same will be apparent to those skilled in the art through the following embodiments and the accompanying drawings. In designating the elements of respective drawings with reference signs, like reference symbols refer to like elements throughout the description. Further, it is to be noted that, when the functions of conventional elements and the detailed description of elements related with the present invention may make the gist of the present invention unclear, a detailed description of those elements will be omitted.

[0047]Referring to FIGS. 1 and 2, a battery module 1 according to a preferred embodiment of the present invention is designed to immediately cut off a circuit current ...

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Abstract

A battery cell assembly includes a battery cell, a cartridge surrounding an edge of the battery cell and having insertion holes on opposite sides thereof, and a strap section disposed across one surface of the battery cell and having an elongated body part, fastening parts on opposite ends of the elongated body part, and a press pin protruding vertically from the elongated body part. A battery module capable of detecting swelling includes the plurality of battery cell assemblies.

Description

CROSS REFERENCE TO RELATED APPLICATION(S)[0001]This application claims the benefit of Korean Patent Application No. 10-2014-0078337, filed on Jun. 25, 2014 entitled “BATTERY CELL ASSEMBLY AND BATTERY MODULE FOR DETECTING SWELLING PHENOMENON THEREOF”, which is hereby incorporated by reference in its entirety into this application.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention generally relates to a battery assembly and a battery module for detecting a swelling phenomenon thereof.[0004]2. Description of the Related Art[0005]As well known in the art, secondary batteries are batteries that are capable of repeatedly performing charge / discharge so they are applicable as power sources for electric vehicles (EVs), hybrid electric vehicles (HEVs), or the like.[0006]EVs or the like requiring high-power large-capacity batteries generally employ medium-large size battery modules. Such medium-large size battery modules include an angled or pouch cell that h...

Claims

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Application Information

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IPC IPC(8): H01M10/48H01M50/209H01M50/264H01M50/271
CPCH01M2200/20H01M2/1016H01M10/425H01M10/48Y02E60/10H01M50/209H01M50/264H01M50/271H01M50/20H01M50/572
InventorKIM, WON WOOKLIM, DONG HUNJU, SEUNG HOON
OwnerSK INNOVATION CO LTD