Battery unit and secondary battery employing the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-004/02
H01M-002/18
H01M-002/14
H01M-002/26
출원번호
US-0214557
(2002-08-09)
우선권정보
KR-2001-73286(2001-11-23)
발명자
/ 주소
Park,Sang mok
Lee,Chan hee
출원인 / 주소
Samsung SDI Co., Ltd.
대리인 / 주소
Stein, McEwen &
인용정보
피인용 횟수 :
10인용 특허 :
1
초록▼
A battery unit for a secondary battery that includes a positive electrode plate, a positive electrode tab, a negative electrode plate, a negative electrode tab, a separator, and short circuit preventing units, wherein the short circuit preventing units are formed on corresponding uncoated areas of t
A battery unit for a secondary battery that includes a positive electrode plate, a positive electrode tab, a negative electrode plate, a negative electrode tab, a separator, and short circuit preventing units, wherein the short circuit preventing units are formed on corresponding uncoated areas of the positive and negative electrode current collectors where the positive and negative electrode sheets are not formed, each short circuit preventing unit having a corresponding width greater than a width of the corresponding positive and negative electrode current collectors.
대표청구항▼
What is claimed is: 1. A battery unit for a secondary battery comprising: a positive electrode plate having a positive electrode current collector, and positive electrode sheets selectively formed on surfaces of the positive electrode current collector; a positive electrode tab electrically connect
What is claimed is: 1. A battery unit for a secondary battery comprising: a positive electrode plate having a positive electrode current collector, and positive electrode sheets selectively formed on surfaces of the positive electrode current collector; a positive electrode tab electrically connected to the positive electrode current collector and a protective tape wrapped around a portion protruding from the positive electrode current collector; a negative electrode plate having a negative electrode current collector and negative electrode sheets selectively formed on surfaces of the negative electrode current collector; a negative electrode tab electrically connected to the negative electrode current collector and a protective tape wrapped around a portion protruding from the negative electrode current collector; a separator interposed between the positive electrode plate and the negative electrode plate; and short circuit preventing units selectively formed on corresponding uncoated areas of the positive and negative electrode current collectors where the positive and negative electrode sheets are not formed, each short circuit preventing unit having a corresponding width greater than a width of the corresponding positive and negative electrode current collectors so as to cover at least a portion of the corresponding protective tape. 2. The battery unit of claim 1, wherein: the positive electrode tab is fixedly welded to either a front surface or a rear surface of the positive uncoated areas, and an area where the positive electrode tab is exposed is formed between the protective tape wrapped around the positive electrode tab and the positive electrode current collector. 3. The battery unit of claim 2, wherein: one of the short circuit preventing units is adhered to the top surface of an area where the positive electrode tab is formed. 4. The battery unit of claim 3, wherein: the one short circuit preventing unit has a width sufficient to cover both the positive electrode current collector and the area where the positive electrode tab is exposed, and the area ranges from the upper end of the positive electrode current collector to the lower end of the protective tape wrapped around the positive electrode tab. 5. The battery unit of claim 2, wherein one of the short circuit preventing units is provided in the positive uncoated area formed on the rear surface of the positive electrode current collector having the positive electrode tab. 6. The battery unit of claim 5, wherein: the one short circuit preventing unit has a width sufficient to cover both the positive electrode current collector and the area where the positive electrode tab is exposed, and the area ranges from the upper end of the positive electrode current collector to the lower end of the protective tape wrapped around the positive electrode tab. 7. The battery unit of claim 4, wherein the one short circuit preventing unit has a length sufficient to cover both one edge of the positive electrode current collector to a boundary between the positive electrode uncoated area and the positive electrode sheet such that the positive electrode sheet is disposed between the one short circuit preventing unit and the positive electrode current collector. 8. The battery unit of claim 6, wherein the one short circuit preventing unit has a length sufficient to cover both one edge of the positive electrode current collector to a boundary between the positive electrode uncoated area and the positive electrode sheet such that the positive electrode sheet is disposed between the one short circuit preventing unit and the positive electrode current collector. 9. The battery unit of claim 1, wherein: the negative electrode tab is fixedly welded to either a front surface or a rear surface of the negative uncoated areas, and an area where the negative electrode tab is exposed is formed between the negative tape wrapped around the negative electrode tab and the negative electrode current collector. 10. The battery unit of claim 9, wherein one of the short circuit preventing units is adhered to the top surface of an area where the negative electrode tab is formed. 11. The battery unit of claim 10, wherein: the one short circuit preventing unit has a width sufficient to cover both the negative electrode current collector and the area where the negative electrode tab is exposed, and the area ranges from the upper end of the negative electrode current collector to the lower end of the protective tape wrapped around the negative electrode tab. 12. The battery unit of claim 9, wherein one of the short circuit preventing units is formed on the negative electrode uncoated area formed on the rear surface of the negative electrode current collector having the negative electrode tab. 13. The battery unit of claim 10, wherein the one short circuit preventing unit has a length sufficient to cover both one edge of the negative electrode current collector to a boundary between the negative electrode uncoated area and the negative electrode sheet such that the negitive electrode sheet is disposed between the one short circuit preventing unit and the negative electrode current collector. 14. The battery unit of claim 12, wherein the one short circuit preventing unit has a length sufficient to cover both one edge of the negative electrode current collector to a boundary between the negative electrode uncoated area and the negative electrode sheet such the the negative electrode sheet is disposed between the one short circuit preventing unit and the negative electrode current collector. 15. The battery unit of claim 1, wherein the short circuit preventing units comprise insulating tapes made of polymer resins having heat resistance properties. 16. The battery unit of claim 1, wherein the short circuit preventing units comprise polyester. 17. A secondary battery comprising: a battery unit having a positive electrode plate, a separator and a negative electrode plate sequentially disposed and then wound; a positive electrode tab electrically connected to the positive electrode plate and having a protective tape wrapped around a portion protruding from the positive electrode plate; a negative electrode tab selectively connected to the negative electrode plates and having a protective tape wrapped around a portion protruding from the negative electrode plate; and a case having a space in which the battery unit is housed, wherein: the positive electrode plate comprises a positive electrode current collector and a positive electrode sheet selectively formed on surfaces of the positive electrode current collector, the negative electrode plate has a negative electrode current collector and a negative electrode sheet selectively formed on surfaces of the negative electrode current collector, short circuit preventing units selectively formed on corresponding positive and negative electrode uncoated areas of the positive and negative electrode current collectors where the positive and negative electrode sheets are not formed, and the short circuit preventing units each have widths relatively greater than widths of the corresponding positive and electrode current collectors so as to cover at least a portion of the corresponding protective tapes. 18. The secondary battery of claim 17, wherein: the short circuit preventing units have widths sufficient to cover both the positive and negative electrode current collectors and areas where the positive and negative electrode tabs are exposed, and the areas range from the upper ends of the positive and negative electrode current collector to the lower ends of the protective tapes wrapped around the positive and negative electrode tabs. 19. The secondary battery of claim 17, wherein the short circuit preventing units are insulating tapes made of polymer resin having heat resistance. 20. A secondary battery comprising: a positive electrode plate having a positive electrode current collector and a positive electrode sheet formed on a surface of the positive electrode current collector; a positive electrode tab extending from and connected to the positive electrode current collector; a negative electrode plate having a negative electrode current collector and a negative electrode sheet formed on a surface of the negative electrode current collector; a negative electrode tab extending from and electrically connected to the negative electrode current collector; a protective tape at one of the positive and negative electrode tabs; and at least one insulator at an area of one of the positive and negative electrode current collectors not coated by the corresponding positive and negative electrode sheets and which prevents short circuits, the at least one insulator having a surface covering at least a portion of either: the protective tape such that the protective tape is between the surface and the corresponding one of the positive and negative electrode tabs, or the corresponding electrode sheet such that the corresponding electrode sheet is between the surface and the corresponding current collector. 21. The secondary battery of claim 20, wherein the insulator covers the portion of both the protective tape and the corresponding electrode sheet. 22. The secondary battery of claim 21, wherein the insulator has an opening which exposes a portion of the area of the one current collector not coated by the corresponding electrode sheet. 23. The secondary battery of claim 20, wherein the insulator comprises an insulating tape. 24. The secondary battery of claim 23, wherein the insulating tape has a width greater than a width of the corresponding positive and negative electrode current collectors so as to cover the uncoated area. 25. The secondary battery of claim 23, wherein the insulator covers the portion of both the protective tape and the corresponding electrode sheet. 26. The secondary battery of claim 25, wherein the insulating tape covers the portion of the protective tape, and the insulator further comprises another tape which covers the corresponding electrode sheet so as to define an opening which exposes a portion of the area of the one current collector not coated by the corresponding electrode sheet. 27. The secondary battery of claim 20, wherein the protective tape is disposed apart from the corresponding positive and negative current collector such that the protective tape does not contact the corresponding current collector. 28. The battery unit of claim 1, wherein: one of the electrode tabs is disposed at a corresponding one of the uncoated areas of the positive and negative electrode current collectors, and at least one of the short circuit preventing units is disposed at the uncoated area such that the one electrode tab is disposed between the at least one short circuit preventing unit and the corresponding one uncoated area. 29. The battery unit of claim 28, wherein the one electrode tab has a length such that the electrode tab extends past an edge of the uncoated area, and the at least one short circuit preventing unit extends past the edge to cover a portion of the length disposed between the protective tape and the edge. 30. The battery unit of claim 28, wherein the at least one short circuit preventing unit has a surface covering at least a portion of: the corresponding protective tape such that the protective tape is between the surface and the corresponding one electrode tab, or the corresponding electrode sheet such that a corresponding one of the positive and negative electrode sheets is between the surface and the corresponding current collector and the surface extends past a boundary between the one electrode sheet and the uncoated area. 31. The battery unit of claim 30, wherein the at least one short circuit preventing unit covers the portion of both the protective tape and the corresponding electrode sheet. 32. The battery unit of claim 31, wherein the at least one short circuit preventing unit has an opening which exposes a portion of the uncoated area of the one current collector without exposing the corresponding electrode sheet and the corresponding electrode tab. 33. The battery unit of claim 30, wherein the at least one short circuit preventing unit has a width greater than a width of the corresponding positive and negative electrode current collectors so as to cover the uncoated area. 34. The battery unit of claim 33, wherein the at least one short circuit preventing unit covers the portion of both the protective tape and the corresponding electrode sheet. 35. The battery unit of claim 34, wherein the at least one short circuit preventing unit comprises an insulator which covers the portion of the protective tape, and another insulator which covers the corresponding electrode sheet so as to define an opening which exposes a portion of the area of the one current collector not coated by the corresponding electrode sheet. 36. The battery unit of claim 30, wherein the protective tape is disposed apart from the corresponding current collector such that the at least one short circuit preventing unit does not contact the corresponding current collector. 37. The battery unit of claim 17, wherein: one of the electrode tabs is disposed at a corresponding one of the uncoated areas of the positive and negative electrode current collectors, and at least one of the short circuit preventing units is disposed at the uncoated area such that the one electrode tab is disposed between the at least one short circuit preventing unit and the corresponding one uncoated area. 38. The secondary battery of claim 37, wherein the one electrode tab has a length such that the electrode tab extends past an edge of the uncoated area, and the at least one short circuit preventing unit extends past the edge to cover a portion of the length disposed between the protective tape and the edge. 39. The secondary battery of claim 37, wherein the at least one short circuit preventing unit has a surface covering at least a portion of: the corresponding protective tape such that the protective tape is between the surface and the corresponding one electrode tab, or the corresponding electrode sheet such that a corresponding one of the positive and negative electrode sheets is between the surface and the corresponding current collector. 40. The secondary battery of claim 39, wherein the at least one short circuit preventing unit covers the portion of both the protective tape and the corresponding electrode sheet. 41. The secondary battery of claim 40, wherein the at least one short circuit preventing unit has an opening which exposes a portion of the uncoated area of the one current collector without exposing the corresponding electrode sheet and the corresponding electrode tab. 42. The secondary battery of claim 40, wherein the at least one short circuit preventing unit has a width greater than a width of the corresponding positive and negative electrode current collectors so as to cover the uncoated area. 43. The secondary battery of claim 42, wherein the at least one short circuit preventing unit covers the portion of both the protective tape and the corresponding electrode sheet. 44. The secondary battery of claim 43, wherein the at least one short circuit preventing unit covers the portion of the protective tape, and the at least one short circuit preventing unit further comprises another tape which covers the corresponding electrode sheet so as to define an opening which exposes a portion of the area of the one current collector not coated by the corresponding electrode sheet. 45. The secondary battery of claim 39, wherein the protective tape is disposed apart from the corresponding current collector such that the protective tape does not contact the corresponding current collector.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (1)
Kim Han-sung,KRX ; Roh Whan-jin,KRX ; Noh Hyung-gon,KRX, Secondary battery with sealing materials coated onto electrode tabs.
Kim,Jong Ku; Saito,Akihiko; Kim,Yoo Kyoung, Jelly-roll type electrode assembly, lithium secondary battery having the same, and method for manufacturing the same.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.