Secondary battery frame and battery pack including the same

1. A secondary battery frame used to package a pouch-type secondary battery, the secondary battery frame comprising:

a frame body comprising a top plate surrounding a circumferential area through which an electrode lead is exposed among a circumferential area of the pouch-type secondary battery, a left plate connected to a left edge of the top plate, a right plate connected to a right edge of the top plate, and a bottom plate connected to a bottom edge of the left plate and a bottom edge of the right plate; and

a protrusion protrusively formed from at least one of the top plate, the bottom plate, the left plate, and the right plate in an outward direction of the frame body,

wherein the protrusion is formed on at least one of four corners formed by adjacent two plates of the top plate, the bottom plate, the left plate, and the right plate,

wherein each protrusion is formed at the top edge and the bottom edge of the left plate, the top edge and the bottom edge of the right plate, the left edge and the right edge of the top plate, and the left edge and the right edge of the bottom plate,

wherein the protrusion formed at the top edge of the left plate and the protrusion formed at the left edge of the top plate are interconnected to form a first protrusion, the protrusion formed at the top edge of the right plate and the protrusion formed at the right edge of the top plate are interconnected to form a second protrusion, the protrusion formed at the bottom edge of the left plate and the protrusion formed at the left edge of the bottom plate are interconnected to form a third protrusion, and the protrusion formed at the bottom edge of the right plate and the protrusion formed at the right edge of the bottom plate are interconnected to form a fourth protrusion.

2. The secondary battery frame according to claim 1 , wherein at least a portion of the corner of at least one of the first protrusion, the second protrusion, the third protrusion, and the fourth protrusion has a round shape.

3. The secondary battery frame according to claim 1 , wherein the protrusion is integrally formed with the frame body.

4. The secondary battery frame according to claim 1 , wherein the protrusion has a thickness greater than a thickness of the frame body.

5. The secondary battery frame according to claim 1 , wherein the frame body and the protrusion are made of plastics.

6. A battery pack comprising:

a pouch-type secondary battery;

a secondary battery frame comprising a frame body and a protrusion, the frame body comprising a top plate surrounding a circumferential area through which an electrode lead is exposed among a circumferential area of the pouch-type secondary battery, a left plate connected to a left edge of the top plate, a right plate connected to a right edge of the top plate, and a bottom plate connected to a bottom edge of the left plate and a bottom edge of the right plate, and the protrusion protrusively formed from at least one of the top plate, the bottom plate, the left plate, and the right plate in an outward direction of the frame body; and

a protection circuit electrically connected to the electrode lead,

wherein the protrusion is formed on at least one of four corners formed by adjacent two plates of the top plate, the bottom plate, the left plate, and the right plate,

wherein each protrusion is formed at the top edge and the bottom edge of the left plate, the top edge and the bottom edge of the right plate, the left edge and the right edge of the top plate, and the left edge and the right edge of the bottom plate,

wherein the protrusion formed at the top edge of the left plate and the protrusion formed at the left edge of the top plate are interconnected to form a first protrusion, the protrusion formed at the top edge of the right plate and the protrusion formed at the right edge of the top plate are interconnected to form a second protrusion, the protrusion formed at the bottom edge of the left plate and the protrusion formed at the left edge of the bottom plate are interconnected to form a third protrusion, and the protrusion formed at the bottom edge of the right plate and the protrusion formed at the right edge of the bottom plate are interconnected to form a fourth protrusion.

7. The battery pack according to claim 6 , wherein at least a portion of the corner of at least one of the first protrusion, the second protrusion, the third protrusion, and the fourth protrusion has a round shape.

8. The battery pack according to claim 6 , wherein the protrusion is integrally formed with the frame body.

9. The battery pack according to claim 6 , wherein the protrusion has a thickness greater than a thickness of the frame body.

10. The battery pack according to claim 6 , wherein the frame body and the protrusion are made of plastics.