公开(公告)号：JP2007305495A

公开(公告)日：2007-11-22

申请号：JP2006134431

申请日：2006-05-12

Applicant: Sony Corp ,  ソニー株式会社

Inventor： NAKAMURA RIICHI ,  TERAUCHI MASUMI ,  KOGA KEIZO ,  KUMAKAWA MASASHI

IPC: H01M10/05 ,  H01M4/139 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/058

CPC classification number: Y02P70/54

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of an electrode constituted by suppressing characteristic degradation, and to provide a manufacturing method of a battery formed by using the electrode. SOLUTION: This manufacturing method of a battery includes a kneaded material preparation process for providing a kneaded material, by kneading an active material and at least either of a conductive agent and a binder by using a solvent; and an applying/drying process for applying the kneaded material to a collector and drying it, to provide an electrode with an active material layer formed on the collector. Prior to at least the applying/drying process, the solvent is brought into contact with an alkaline metal. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供由抑制特性劣化构成的电极的制造方法，并提供通过使用电极形成的电池的制造方法。 解决方案：电池的制造方法包括：通过使用溶剂将活性物质与导电剂和粘合剂中的至少任意一种混炼来提供混炼物的捏合材料制备方法; 以及将捏合物施加到收集器并干燥的施加/干燥方法，以提供在集电体上形成的活性物质层的电极。 在至少施加/干燥处理之前，使溶剂与碱金属接触。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2001345102A

公开(公告)日：2001-12-14

申请号：JP2001102690

申请日：2001-03-30

Applicant: SONY CORP

Inventor： TSUJIMOTO TAKASHI ,  YAMAMOTO YOSHIKATSU ,  KUYAMA JUNJI ,  KUMAKAWA MASASHI

IPC: H01M10/05 ,  C01B31/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/02 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery having an excellent high temperature shelf life, excellent load characteristics after use at high temperature, and excellent charging/discharging cycle characteristics. SOLUTION: A wound electrode body 20 formed by winding a belt-shaped positive electrode 21 and a belt-shaped negative electrode 22 through a separator 23 is contained in a battery can 11. The positive electrode 21 contains LixMn2-yMayO4 (Ma is at least one kind in a group comprising a metal element other than Mn, and B) and LiCoO2 or LiCo1-zMbzO2 (Mb is at least one kind in a group comprising a metal element other than Co, and B). Thereby, in the secondary battery, the high temperature storage characteristics can be increased. By specifying the average particle size of the oxides 30 μm or less, the charge/discharge cycle characteristics can be increased. By using non- graphitizable carbon in the negative electrode 22, heavy load discharge characteristics after high temperature cycles can be improved.

公开(公告)号：JPH11185821A

公开(公告)日：1999-07-09

申请号：JP35174697

申请日：1997-12-19

Applicant: SONY CORP

Inventor： SUGANO NAOYUKI ,  INOUE YOSHITO ,  KUMAKAWA MASASHI

IPC: H01M10/05 ,  C01B31/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/40 ,  H01M4/02 ,  H01M4/58

Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery that can realize high power and is excellent in discharging characteristics, life cycle characteristics and heavy load characteristics while using lithium manganese oxide for its positive electrode active material. SOLUTION: This secondary battery is equipped with a positive electrode 1 using lithium manganese oxide as its active material, a negative electrode 2 formed from a material that can dope or undope a lithium metal, a lithium alloy or lithium, and a nonaqueous electrolytic solution; the thickness of the mix layer of the positive electrode 1 is not more than four times as large as the thickness of a collector 10 and 50% cumulative particle diameter of its lithium manganese oxide is in the range of 5-15 μm. In addition, the negative electrode 2, the thickness of the mix of which is not more than four times as large as the thickness of a collector 11, is formed from a carbonaceous material having 50% cumulative particle diameter in the range of 5-15 μm.

公开(公告)号：JPH10294099A

公开(公告)日：1998-11-04

申请号：JP10363997

申请日：1997-04-21

Applicant: SONY CORP

Inventor： SUGANO NAOYUKI ,  KUMAKAWA MASASHI ,  INOUE YOSHITO

IPC: C01G45/00 ,  C01B31/02 ,  H01M4/505 ,  H01M10/05 ,  H01M10/052 ,  H01M10/0566 ,  H01M4/02 ,  H01M4/04 ,  H01M4/58 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary cell excellent in charging/discharging capacity, cyclic life performance, and discharge loading performance while oxide lithium manganese is being used as positive electrode active material. SOLUTION: This cell is equipped with a positive electrode 1 where oxide lithium manganese is used as active material, a negative electrode 2 composed of lithium metal, lithium alloys, or of material capable of doping/de-doping lithium, and with non-aqueous electrolyte. In this case, oxide lithium manganese is made out of raw material composed of lithium compounds, and of manganese compounds comprising less than 0.6 wt.% sulfur contained therein, and a strength ratio of a (400) surface to a (311) surface at the diffraction peak, is 1.05 to 1.20 at the diffraction peak of the X-ray diffraction.

公开(公告)号：JPH11185822A

公开(公告)日：1999-07-09

申请号：JP35174897

申请日：1997-12-19

Applicant: SONY CORP

Inventor： SUGANO NAOYUKI ,  INOUE YOSHITO ,  KUMAKAWA MASASHI

IPC: C01B31/02 ,  C01G45/00 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/587 ,  H01M10/05 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/058 ,  H01M10/40 ,  H01M4/02 ,  H01M4/58

Abstract: PROBLEM TO BE SOLVED: To provide a good load performance and long charging/discharging cycles by using lithium manganese oxide as a positive electrode material, and specifying the weight ratio of a positive depolarizing mix and a negative depolarizing mix to the specified range, the thickness ratio of a positive deporizing mix layer and a positive current collector, and the thickness ratio of a negative depovizing mix layer and a negative current collector both to the specified range. SOLUTION: This nonaqueous electrolyte secondary battery is formed in such a way that a negative electrode formed by arranging a negative depolarizing mix layer 15 on both surfaces of a negative current collector 10, and a positive electrode 2 formed by arranging a positive depolarizing mix layer 16 containing lithium manganese oxide on both surfaces of a positive current collector 11 are spirally wound through a microporous film separator 3, an insulator 4 is placed on the top and bottom of the winding body, then they are housed in a battery can 5. In the battery, the ratio of the positive mix layer 16 and the negative mix layer 15 is specified to the range of 3:1-4:1, the thickness ratio of the positive mix layer 16 and the positive current collector 11 and that of the negative mix layer 15 and the negative current collector 10 are specified to the range of 2:1-4:1.

公开(公告)号：JPH11214042A

公开(公告)日：1999-08-06

申请号：JP1750798

申请日：1998-01-29

Applicant: SONY CORP

Inventor： SUGANO NAOYUKI ,  INOUE YOSHITO ,  KUMAKAWA MASASHI

IPC: H01M10/05 ,  C01B31/02 ,  H01M4/505 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/40 ,  H01M4/02 ,  H01M4/58

Abstract: PROBLEM TO BE SOLVED: To improve discharge load characteristic and charge and discharge cycle characteristic in a nonaqueous electrolytic secondary battery using a positive electrode, having a positive electrode compound layer containing a lithium manganese oxide held on a positive electrode power collector, and a negative electrode having a negative electrode compound layer containing a carbon material held on a negative electrode power collector. SOLUTION: The weight ratio of a lithium manganese oxide contained in a positive electrode compound layer 16 to a carbon material contained in a negative electrode compound layer 15 is restrained to be within the range of 2.0:1 to 2.9:1. At this time, when the filling density of the negative electrode compound layer 15 is preferably 1.4 to 1.7 g/cm , and the thickness ratio of the positive electrode 2 and the negative electrode 1 is 1.15:1 to 1.6:1, discharge load characteristics and charge and discharge cycle characteristics are further improved.

公开(公告)号：JPH10108380A

公开(公告)日：1998-04-24

申请号：JP25471096

申请日：1996-09-26

Applicant: SONY CORP

Inventor： KUMAKAWA MASASHI

IPC: H02J7/00 ,  B60L3/00 ,  B60L7/10 ,  B60L11/18 ,  H01M10/44 ,  H02J7/02 ,  H02J7/04

Abstract: PROBLEM TO BE SOLVED: To provide a charger for a secondary battery for an electric vehicle, which improves the inefficiency of regenerative operation under low temperature and enables optimum regeneration under any environment, and its charging method. SOLUTION: This charger for a secondary battery for an electric vehicle comprises a charge power supplied 1 which supplies charge power, a charge circuit 2, a secondary battery 3 for an electric vehicle, a voltage detection circuit 3 for an electric vehicle, a voltage detecting circuit 4 connected to the secondary battery 3 for an electric vehicle, a temperature sensor 5, a control circuit 6 to which these are connected, and a storage circuit 7. Then, the control circuit 6 controls the charge power of the charging circuit 2 so that it may be the optimum charge power, by comparing the chargeable DOD% computed from the voltage and the temperature detected, respectively, with the voltage detecting circuit 4 and the temperature sensor 5 with the function where temperature of the secondary battery stored in advance in the storage circuit 7, the depth of rechargeable discharge, and the voltage are made the parameters. Hereby, it becomes possible to perform efficient regenerative operation not influenced by the ambient temperature.