[특허]Electrode assemblage and rechargeable battery using the same

Samsung SDI Co., Ltd.

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Electrode assemblage and rechargeable battery using the same

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-004/131 H01M-004/505 H01M-004/80 H01M-004/525 H01M-010/052 H01M-004/36 H01M-010/0585 H01M-004/04 H01M-004/02
출원번호	US-0947765 (2010-11-16)
등록번호	US-9553302 (2017-01-24)
우선권정보	KR-10-2010-0005191 (2010-01-20)
발명자 / 주소	Han, Man-Seok Kim, Sung-Soo Choi, Nam-Soon Roh, Sae-Weon Hong, Jin-Kyu
출원인 / 주소	Samsung SDI Co., Ltd.
대리인 / 주소	Lewis Roca Rothgerber Christie LLP
인용정보	피인용 횟수 : 0 인용 특허 : 2

초록
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An electrode assemblage includes a first electrode assembly with first electrodes. Each first electrode has a porous first electrode current collector with a plurality of pores, and first electrode active material layers attached to the porous first electrode current collector. The electrode assemblage further includes a second electrode having a second electrode current collector and second electrode active material layers attached to the second electrode current collector, and also includes a separator disposed between the first electrode assembly and ...

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1. An electrode assemblage comprising: a first electrode assembly with a plurality of first electrodes, each first electrode having a porous first electrode current collector with a plurality of pores and first electrode active material layers attached to the porous first electrode current collector, wherein two first electrode active material layers are interposed between two adjacent first electrode current collectors such that one of the two first electrode active material layers contacts one of the two adjacent first electrode current collectors, the other one of the two first electrode active material layers contacts the other one of the two adjacent first electrode current collectors, and the two first electrode active material layers contact each other;a second electrode having a second electrode current collector and second electrode active material layers attached to the second electrode current collector, at least two of the first electrodes being at a same side of the second electrode; anda separator disposed between the first electrode assembly and the second electrode,wherein when the number of first electrode current collectors contained in the first electrode assembly is indicated by a letter N, the number of first electrode active material layers contained in the first electrode assembly is established to be 2N. 2. The electrode assemblage of claim 1, wherein the plurality of first electrodes each comprises first electrode active material layers laminated on respective sides of each first electrode current collector. 3. The electrode assemblage of claim 1, wherein each first electrode active material layer is hot-pressed against its respective first electrode current collector. 4. The electrode assemblage of claim 1, wherein a plurality of pores is formed in the second electrode current collector, and a second electrode assembly is formed by electrically connecting a plurality of the second electrodes with each other while the second electrode assembly faces the first electrode assembly with the separator interposed between the first electrode assembly and the second electrode assembly. 5. The electrode assemblage of claim 1, wherein a first active material of each first electrode active material layer comprises a loading level ranging from about 60 mg mg/cm2 to about 120 mg/cm2 and is attached to each side of the first current collector. 6. The electrode assemblage of claim 1, wherein the first current collector is first coated with a mixture of a conductive agent and a binder. 7. The electrode assemblage of claim 1 further comprising at least one outer electrode assembly disposed at the outermost sides of the electrode assemblage, wherein each outer electrode assembly comprises a plurality of outer electrodes each with an outer current collector and outer active material layers attached on both sides of the outer current collector, and the outer active material layer is smaller in thickness than the first electrode active material layer. 8. The electrode assemblage of claim 7, wherein the outer active material layer is half the thickness of the first electrode active material layer. 9. The electrode assemblage of claim 1, wherein each first electrode comprises an outer active material layer disposed at the outermost side of the first electrode assembly and an inner active material layer disposed internal to the first electrode assembly, and the inner active material layer contains more lithium manganese oxide (LMO) than the outer active material layer. 10. The electrode assemblage of claim 9, wherein the inner active material layer contains lithium manganese oxide, and the outer active material layer contains a mixture of lithium manganese oxide, and lithium nickel cobalt manganese (NCM) oxide or lithium cobalt oxide (LCO). 11. A rechargeable battery comprising an electrode assemblage, the electrode assemblage comprising: a first electrode assembly with a plurality of first electrodes, each first electrode having a porous first electrode current collector with a plurality of pores and first electrode active material layers attached to the first electrode current collector, wherein two first electrode active material layers are interposed between two adjacent first electrode current collectors such that one of the two first electrode active material layers contacts one of the two adjacent first electrode current collectors, the other one of the two first electrode active material layers contacts the other one of the two adjacent first electrode current collectors, and the two first electrode active material layers contact each other,a second electrode having a second electrode current collector and second electrode active material layers attached to the second electrode current collector, at least two of the first electrodes being at a same side of the second electrode,a separator disposed between the first electrode assembly and the second electrode;a case within which the electrode assemblage is mounted; andterminals electrically connected to the electrode assemblage and protruding to the outside,wherein when the number of first electrode current collectors contained in the first electrode assembly is indicated by a letter N, the number of first electrode active material layers contained in the first electrode assembly is established to be 2N. 12. The rechargeable battery of claim 11, wherein when the number of first electrode current collectors contained in the first electrode assembly is indicated by a letter N, the number of first electrode active material layers contained in the first electrode assembly is established to be 2N. 13. The rechargeable battery of claim 11, wherein each first electrode active material layer is hot-pressed against the respective first electrode current collector. 14. The rechargeable battery of claim 11, wherein a plurality of pores is formed in the second electrode current collector, and a second electrode assembly is formed by electrically connecting a plurality of the second electrodes with each other while the second electrode assembly faces the first electrode assembly with the separator interposed between the first electrode assembly and the second electrode assembly. 15. The rechargeable battery of claim 11, wherein the electrode assemblage further comprises an outer electrode assembly at the outermost side of the electrode assemblage, and the outer electrode assembly comprises a plurality of outer electrodes each with an outer current collector and outer active material layers attached on both sides of the outer current collector, while the outer active material layer is smaller in thickness than the first electrode active material layer. 16. The rechargeable battery of claim 15, wherein the outer active material layer is half the thickness of the first electrode active material layer. 17. The rechargeable battery of claim 11, wherein each first electrode comprises an outer active material layer disposed at the outermost side of the first electrode assembly and an inner active material layer disposed internal to the first electrode assembly, and the inner active material layer contains more lithium manganese oxide (LMO) than the outer active material layer. 18. The rechargeable battery of claim 17, wherein the inner active material layer contains lithium manganese oxide, and the outer active material layer contains a mixture of lithium manganese oxide, and lithium nickel cobalt manganese (NCM) oxide or lithium cobalt oxide (LCO).

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