BATTERY CELL AND BATTERY MODULE INCLUDING THE SAME

1 . A battery cell comprising:

a battery unit including a first electrode part, a second electrode part, and a separator;

first and second electrode taps each welded to the first and second electrode parts; and

a case having the first and second electrode taps protruded outwardly thereof, having a pouch form in which it is sealed while including the first electrode part, the second electrode part, and the separator in an inner portion thereof, and including a sealing part having a sealing member applied thereto and a vent part, which is a predetermined region of the sealing part having a width narrower than that of the other region thereof.

2 . The battery cell of claim 1 , wherein the sealing part of the case is heat-fused and bonded by a pair of compression parts each provided with first and second grooves having a shape corresponding to that of the vent part.

3 . A battery module formed by stacking the battery cell of claim 2 in plural.

4 . The battery cell of claim 1 , wherein the vent part is formed so that a predetermined region from an inner side of the case to an outer side thereof is not bonded.

5 . The battery cell of claim 4 , wherein the sealing part of the case is heat-fused and bonded by a pair of compression parts each provided with first and second grooves having a shape corresponding to that of the vent part.

6 . A battery module formed by stacking the battery cell of claim 5 in plural.

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.