公开(公告)号：US06753104B2

公开(公告)日：2004-06-22

申请号：US09323628

申请日：1999-06-01

Applicant: Kenshin Kitoh

Inventor： Kenshin Kitoh

IPC: H01M1040

CPC classification number: B60K6/28 ,  H01M2/263 ,  H01M10/0431 ,  H01M10/0525 ,  Y02E60/122 ,  Y10S903/907

Abstract: A lithium secondary battery includes an internal electrode body including a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are wound or laminated via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. At least a plurality of tabs for current collecting were provided to have a total cross-sectional area of the tabs be not less than a constant area in accordance with the quality of the material to be used for the tabs so that the tabs to be connected to each of the positive and negative electrodes may not respectively fuse when at least 100 A current has flown through the lithium secondary battery. The lithium secondary battery maintains a good charge-discharge cycle characteristics, and safety may be secured with electricity being cut off when an excess current has occurred due to external short circuit, etc., so that the battery may not be exploded nor be ignited. In particular, the lithium secondary battery may be preferably used for driving a motor of an electric vehicle, etc.

Abstract translation: 锂二次电池包括具有正极，负极和隔板的内部电极体。 正极和负极通过隔膜卷绕或层叠，使得正极和负极彼此不直接接触。 提供至少多个用于电流收集的突片，以根据用于突片的材料的质量使突片的总横截面积不小于恒定面积，使得要连接的突片 当至少100A的电流流过锂二次电池时，正极和负极中的每一个可能不会分别熔断。 锂二次电池保持良好的充放电循环特性，并且当由于外部短路等而发生过电流时，可以确保电力被切断的安全性，使得电池可能不会分解或点燃。 特别地，锂二次电池可以优选用于驱动电动车辆的电动机等。

公开(公告)号：US06569557B1

公开(公告)日：2003-05-27

申请号：US09392915

申请日：1999-09-09

Applicant: Kenshin Kitoh ,  Teruhisa Kurokawa

Inventor： Kenshin Kitoh ,  Teruhisa Kurokawa

IPC: H01M1040

CPC classification number: H01M10/0525 ,  H01M4/131 ,  H01M4/505 ,  H01M4/625 ,  H01M6/10 ,  H01M10/0587 ,  H01M2004/021 ,  Y02T10/7011

Abstract: A lithium secondary battery includes: an internal electrode body including a positive electrode, a negative electrode, and a separator, the positive electrode and the negative electrode being wound or laminated via the separator, and an organic electrolyte. The active material used in the positive electrode satisfies the following relation between the average particle diameter R (&mgr;m) and the specific surface area S (m2/g): 6≦R×S≦50 The amount of the acetylene black added to the positive electrode active material satisfies the following relation with the specific surface area of the positive electrode active material: S≦W≦S+5 (W≦10) (W is the amount of the acetylene black added to the positive electrode active material, expressed in % by weight based on the amount of the active material, and S is expressed in m2/g.) In this battery, the electron conductivity is improved, and the internal resistance is reduced.

Abstract translation: 锂二次电池包括：具有正极，负极和隔板的内部电极体，正极和负极经由隔膜卷绕或层压，并且有机电解质。 正极中使用的活性物质满足平均粒径R（mum）和比表面积S（m 2 / g）之间的关系：添加到正极活性物质中的乙炔黑的量满足以下关系 正极活性物质的比表面积：（W是加入到正极活性物质中的乙炔黑的量，以活性物质的量表示，以重量％表示，S表示为m2 / g）在该电池中，电子传导性提高，内阻降低。

公开(公告)号：US06455198B1

公开(公告)日：2002-09-24

申请号：US09186308

申请日：1998-11-04

Applicant: Kenshin Kitoh

Inventor： Kenshin Kitoh

IPC: H01M446

CPC classification number: H01M10/052 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2010/4292 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A lithium secondary battery is provided in which even if the depth of discharge becomes deep, lowering of an power is small, and charging and discharging characteristics are excellent, and which is suitably used particularly as a battery for driving a motor of an electric vehicle or the like. In the lithium secondary battery, an internal electrode body formed by winding a lithium manganese positive electrode and a graphite negative electrode through a separator made of porous polymer is contained in a battery case, and an organic electrolyte is used. An power at a depth of discharge of 80% is not smaller than 60% of an power at a depth of discharge of 0%.

Abstract translation: 提供一种锂二次电池，其中即使放电深度变深，功率的降低也小，充放电特性优异，特别适合用作驱动电动汽车的电动机的电池或 类似。 在锂二次电池中，通过由多孔性聚合物制成的隔板将锂锰正极和石墨负极卷绕而形成的内部电极体包含在电池壳体中，并且使用有机电解质。 放电深度为80％的功率不小于放电深度为0％的功率的60％。

公开(公告)号：US06258487B1

公开(公告)日：2001-07-10

申请号：US09169648

申请日：1998-10-09

Applicant: Kenshin Kitoh ,  Teruhisa Kurokawa

Inventor： Kenshin Kitoh ,  Teruhisa Kurokawa

IPC: H01M464

CPC classification number: H01M10/05

Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body 1 contained in the battery case and including a positive electrode 2, a negative electrode 3, and a separator 4 made of porous polymer. The positive electrode and the negative electrode are wound through the separator so that the positive electrode and the negative electrode are not brought into contact with each other. At least one of the positive electrode 2 and negative electrode 3 has two or more divided electrodes. The lithium secondary battery is excellent in the charging/discharging cycle characteristics, has high reliability, and is used particularly as a battery for driving a motor of an electric vehicle.

Abstract translation: 锂二次电池包括：电池壳体和容纳在电池壳体中并包括由多孔聚合物制成的正极2，负极3和隔板4的内部电极体1。 正极和负极通过隔膜缠绕，使得正极和负极彼此不接触。 正极2和负极3中的至少一个具有两个以上的分割电极。 锂二次电池的充放电循环特性优异，可靠性高，特别适用于驱动电动汽车的电动机的电池。