Pouch-type secondary battery comprising pattern sealing parts
According to an embodiment of the present disclosure, there are provided a pouch-type secondary battery, including an electrode assembly, and a pouch film including an accommodating part in which the electrode assembly is disposed and a sealing part formed by fusion of edges of the accommodating part, wherein the sealing part includes a pattern sealing part on one or more sides among four sides of the pouch-type secondary battery, and the pattern sealing part includes a plurality of sealings provided with one or more discontinuous parts, and a battery module including the pouch-type secondary battery as a unit cell.
1 . A pouch-type secondary battery, comprising:
an electrode assembly; and
a pouch film comprising an accommodating part in which the electrode assembly is disposed and a sealing part formed by fusion of edges of the accommodating part,
wherein the sealing part comprises a pattern sealing part on all sides of the pouch-type secondary battery,
wherein the pattern sealing part comprises a plurality of sealings provided with one or more discontinuous parts,
wherein an interval between respective sealings of the pattern sealing part is 0.1 to 5 mm,
wherein a width of each sealing of the pattern sealing part is 0.1 to 5 mm,
wherein a total sum of widths of the one or more discontinuous parts provided in a sealing of the pattern sealing part is 0.1% to 10% with respect to 100% of a total width of a side of the pouch-type secondary battery in which the sealing of the pattern sealing part is located, and
wherein an outermost sealing among the plurality of sealings in the pattern sealing part has no discontinuous part.
2 . The pouch-type secondary battery of claim 1 , wherein the one or more discontinuous parts provided in the sealing of the pattern sealing part and the one or more discontinuous parts provided in another sealing adjacent to the sealing of the pattern sealing part are not neighboring each other.
3 . The pouch-type secondary battery of claim 1 , wherein a number of the plurality of sealings of the pattern sealing part is 2 to 10.
4 . The pouch-type secondary battery of claim 1 , wherein an area of the pattern sealing part is 10% to 90% with respect to 100% of a total area of the sealing part.
5 . The pouch-type secondary battery of claim 1 , wherein two pattern sealing parts are located on sides neighboring each other.
6 . The pouch-type secondary battery of claim 1 , wherein two pattern sealing parts are located on sides not neighboring each other.
7 . A battery module comprising the pouch-type secondary battery according to claim 1 as a unit cell.
8 . A device comprising the battery module according to claim 7 as a power source.