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A rechargeable battery is disclosed. The rechargeable battery comprises: a central electrode portion comprising a positive electrode, a negative electrode and a separator; a first electrode portion extending from a first end of the central electrode portion; a second electrode portion extending from

A rechargeable battery is disclosed. The rechargeable battery comprises: a central electrode portion comprising a positive electrode, a negative electrode and a separator; a first electrode portion extending from a first end of the central electrode portion; a second electrode portion extending from a second end of the central electrode portion opposite the first end; a central case enclosing the central electrode portion; a first electrode case enclosing the first electrode portion, wherein the first electrode case is coupled to the central case such that an overlapping part of the first electrode case encloses a part of the central electrode portion at the first end, and the central case encloses the overlapping part of the first electrode case; and a second electrode case enclosing the second electrode portion, wherein the second electrode case is coupled to the central case such that an overlapping part of the second electrode case encloses a part of the central electrode portion at the second end, and the central case encloses the overlapping part of the second electrode case.

대표청구항 ▼

1. A rechargeable battery comprising: a central electrode portion comprising a positive electrode, a negative electrode and a separator;a first electrode portion extending from a first end of the central electrode portion;a second electrode portion extending from a second end of the central electrod

1. A rechargeable battery comprising: a central electrode portion comprising a positive electrode, a negative electrode and a separator;a first electrode portion extending from a first end of the central electrode portion;a second electrode portion extending from a second end of the central electrode portion opposite the first end;a central case having an inner surface and an outer surface enclosing the central electrode portion respectively having a first and a second opening having first and second dimensions;a first electrode case having an inner and outer surface and enclosing the first electrode portion, wherein the first electrode case is coupled to the central case the first electrode case being dimensioned to have dimensions corresponding to the first dimensions of the first opening so as to be positioned within the first opening in the central case such that an overlapping part of the first electrode case encloses a part of the central electrode portion at the first end, and the central case encloses the overlapping part of the first electrode case such that the inner surface of the central case is positioned adjacent the outer surface of the first electrode case; anda second electrode case having an inner and outer surface and enclosing the second electrode portion, wherein the second electrode case is coupled to the central case the second electrode case being dimensioned so as to have dimensions corresponding to the second dimension of the second opening so as to be positioned within the second opening in the central case such that an overlapping part of the second electrode case encloses a part of the central electrode portion at the second end, and the central case encloses the overlapping part of the second electrode case such that the inner surface of the central case is positioned adjacent the outer surface of the second electrode case. 2. The rechargeable battery of claim 1, wherein the central case comprises a material that is different from at least one of the first and second electrode cases. 3. The rechargeable battery of claim 1, wherein the central case comprises a laminate sheet in which a metal layer and a resin layer are bonded by an adhesive layer, and the first and second electrode cases comprise a hard metal. 4. The rechargeable battery of claim 1, wherein at least one of the first and second electrode cases are bent at an angle. 5. The rechargeable battery of claim 1, wherein at least one of the first and second electrode cases are bent at a substantially perpendicular angle. 6. The rechargeable battery of claim 1, wherein the first and second electrode portions each comprises a curved portion and a current collecting portion. 7. The rechargeable battery of claim 6, wherein: the first electrode case comprises a first receiving part enclosing the curved portion of the first electrode portion, and a second receiving part enclosing the current collecting portion of the first electrode portion; andthe second electrode case comprises a first receiving part enclosing the curved portion of the second electrode portion; and a second receiving part enclosing the current collecting portion of the second electrode portion. 8. The rechargeable battery of claim 7, wherein the overlapping part of at least one of the first or second electrode cases and the corresponding second receiving part of the at least one of the first or second electrode cases are substantially parallel to each other and the first receiving part has an inclined portion which is inclined at an angle between the overlapping part and the corresponding second receiving part. 9. The rechargeable battery of claim 7, wherein the overlapping part of at least one of the first or second electrode cases and the corresponding second receiving part of the at least one of the first or second electrode cases are substantially parallel to each other and the first receiving part is substantially perpendicular between the overlapping part and the corresponding second receiving part. 10. The rechargeable battery of claim 1, further comprising a seal between the overlapping part of at least one of the first or second electrode cases and the central case. 11. The rechargeable battery of claim 7, further comprising a seal between the second receiving part of at least one of the first or second electrode cases and the central case, wherein the at least one of the first or second electrode cases is bent at a substantially perpendicular angle. 12. The rechargeable battery of claim 7, wherein the current collecting portion of at least one of the first or second electrode portions is fixed to the corresponding first or second electrode case at a recess formed on the second receiving part of the corresponding first or second electrode case. 13. The rechargeable battery of claim 7, wherein the current collecting portion of at least one of the first or second electrode portions is fastened to the corresponding first or second electrode case through an opening formed in the second receiving part of the corresponding first or second electrode case and an opening formed in the current collecting portion of the corresponding first or second electrode portion. 14. The rechargeable battery of claim 13, wherein the first or second electrode portion is fastened to the corresponding first or second electrode case by a conductive fastening member. 15. A rechargeable battery comprising: a central electrode portion comprising a positive electrode, a negative electrode and a separator;a first electrode portion extending from a first end of the central portion;a second electrode portion extending from a second end of the central portion opposite the first end;a central case having an inner and outer surface enclosing the central electrode portion wherein the central case has a first and a second opening respectively having first and second dimensions;a first electrode case having an inner and outer surface and enclosing the first electrode portion wherein the first electrode case is positioned within the first opening so as to be coupled to the central case such that an overlapping part of the first electrode case encloses a part of the central electrode potion at the first end and the central case encloses the overlapping part of the first electrode case and such that the inner wall of the central case is positioned adjacent the outer wall of the first electrode case; anda second electrode case enclosing the second electrode portion;wherein at least one of the first or second electrode cases is bent. 16. The rechargeable battery of claim 15, wherein at least one of the first or second electrode cases is bent at a substantially perpendicular angle. 17. The rechargeable battery of claim 15, wherein at least one of the first and second electrode portions comprises a curved portion and a current collecting portion. 18. The rechargeable battery of claim 17, wherein: the first electrode case comprises a first receiving part enclosing the curved portion of the first electrode portion, and a second receiving part enclosing the current collecting portion of the first electrode portion; andthe second electrode case comprises a first receiving part enclosing the curved portion of the second electrode portion; and a second receiving part enclosing the current collecting portion of the second electrode portion. 19. The rechargeable battery of claim 16, wherein at least one of the first or second electrode cases is bent at an angle between the first and second receiving parts of the at least one of the first or second electrode cases. 20. The rechargeable battery of claim 19, wherein the first and second receiving parts of at least one of the first or second electrode cases are substantially perpendicular to each other. 21. The rechargeable battery of claim 18, wherein the current collecting portion of the first electrode portion is fixed to the first electrode case at a recess formed on the second receiving part of the first electrode case, or the current collecting portion of the second electrode portion is fixed to the second electrode case at a recess formed on the second receiving part of the second electrode case. 22. The rechargeable battery of claim 18, wherein the current collecting portion of the first electrode portion is fastened to the first electrode case through an opening formed in the second receiving part of the first electrode case and a corresponding opening formed in the current collecting portion of the first electrode portion, or wherein the current collecting portion of the second electrode portion is fastened to the second electrode case through an opening formed in the second receiving part of the of the second electrode case and a corresponding opening formed in the current collecting portion of the second electrode portion. 23. The rechargeable battery of claim 22, wherein the current collecting portion of at least one of the first or second electrode portions is fastened by a metal fastener. 24. The rechargeable battery of claim 18, further comprising an electrode terminal coupled with the second receiving part of the first electrode case or the second receiving part of the second electrode case. 25. The rechargeable battery of claim 16, wherein at least one of the first or second electrode cases comprises an electrode terminal. 26. The rechargeable battery of claim 15, wherein the central case comprises a material that is different from at least one of the first and second electrode cases. 27. The rechargeable battery of claim 15, wherein the central case comprises a laminate sheet in which a metal layer and a resin layer are bonded by an adhesive layer, and the first and second electrode cases comprise a hard metal.