Method for manufacturing battery cell and battery module

Patent metadata

Field	Value
Publication number	US-2016197316-A1
Application number	US-201615070764-A
Country	US
Kind code	A1
Filing date	Mar 15, 2016
Priority date	Nov 14, 2011
Publication date	Jul 7, 2016
Grant date	—

Abstract

Provided are a battery cell and a battery module including the same. The battery cell is provided with a vent part, which is a predetermined region of a sealing part of a case having a width narrower than that of the other region thereof, thereby making it possible to easily discharge gas.

First claim

1 - 6 . (canceled)

7 . A method of manufacturing a battery cell, the method comprising:
a manufacturing step of manufacturing a battery part including a first electrode part, a second electrode part, and a separator and welding each of first and second electrode taps to the first and second electrode parts; a receiving step of receiving a battery part in a case so that in which the first and second electrode taps are protruded outwardly; and a sealing step of heat-fusing and bonding a sealing part to which a sealing member is applied in the case to each other by a pair of compression parts provided with first and second grooves.

8 . The method of claim 7 , wherein the sealing step includes:
a disposing step of disposing each of the pair of compression parts at upper and lower sides of the sealing part so that the first and second grooves face each other; and a heat-fusing step of heat-fusing a portion at which the pair of compression parts contacts the sealing part to form a vent part, which is a predetermined region of the sealing part having a bonding width narrower than that of the other region thereof.

9 . A method of manufacturing a battery cell, the method comprising:
placing a battery part between upper and lower case sheets; applying a sealing member between the upper and the lower case sheets and around the battery part; placing the upper and the lower case sheets between a pair of compression parts, wherein the pair compression parts includes a first region and a second region, wherein a groove is formed in the first region, wherein the first region has a narrower width than the second region; and applying heat to the sealing member and pressing the sealing member between the pair of compression parts to form a sealing part between the upper and the lower case sheets, wherein the sealing part includes a first bonding region and a second bonding region, wherein a vent part, which corresponds to the groove, is formed between the first bonding region and the battery part and between the upper and the lower case sheets, and wherein the sealing part in the first bonding region has a narrower width than the sealing part in the second bonding region.

10 . The method of claim 9 , wherein the vent part has a triangular shape, a semi-circular shape, a rectangular shape, a semi-oval shape, a trapezoidal shape, or a combination thereof.

11 . The method of claim 9 , wherein a stress applied to the sealing part in the first bonding region is greater than a stress applied to the sealing part in the second bonding region under a given inner pressure condition.

Assignees

• Sk Innovation Co Ltd

Inventors

• Park Heechan
• Kim Sang Bum

Classifications

• H01M10/0436 Primary

  Small-sized flat cells or batteries for portable equipment · CPC title

• H01M50/55

  on the same side of the cell · CPC title

• H01M50/557

  Plate-shaped terminals · CPC title

• H01M50/105

  Pouches or flexible bags · CPC title

• H01M10/052

  Li-accumulators · CPC title