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1. 发明授权

US06741450B2 Electric double-layer capacitor and method for preparing the same 有权
标题翻译：电双层电容器及其制备方法
公开(公告)号：US06741450B2
公开(公告)日：2004-05-25
申请号：US10320417
申请日：2002-12-17
申请人： Yutaka Nakazawa , Ryuichi Kasahara , Koji Sakata
发明人： Yutaka Nakazawa , Ryuichi Kasahara , Koji Sakata
IPC分类号： H01G900
CPC分类号： H01G9/155 , Y02E60/13 , Y10T29/417
摘要： An electric double-layer capacitor includes a cell structure formed by laminating basic cells in series one on another. Each of the basic cells includes a pair of collectors, a separator disposed between said collectors, gaskets disposed at peripheral edges of said pair of collectors and said separator to define a pair of closed spaces, and a pair of polarizable electrodes which are disposed in said closed spaces defined by said collectors, said separator and said gaskets, respectively and which contain an electrolytic solution. The basic cells are laminated one on another with a back of each of said collectors opposed to said polarizable electrode serving as a connection surface. The electric double-layer capacitor further includes a lead terminal/electrode plate assembly having electrode plates bonded to the collectors located at opposite ends of the cell structure through conductive bond layers. At least one of interfaces between the collectors included in said cell structure has a surface shape based on a rugged surface shape of the surface of the polarizable electrode contacting with and opposed to at least one of the two collectors forming such interface. Thus, in the electric double-layer capacitor, a lower ESR can be realized both at an initial stage of the service of the capacitor and after the service of the capacitor for a long period.
摘要翻译：电双层电容器包括通过将基本电池串联层叠而形成的电池结构。每个基本单元包括一对收集器，设置在所述收集器之间的隔板，设置在所述一对集电器的周边边缘处的垫圈和所述隔板以限定一对封闭空间，以及一对可极化电极，由所述收集器，所述分离器和所述垫圈分别限定并且包含电解液的封闭空间。基本单元彼此层叠，与所述可极化电极相对的每个所述集电体的背面用作连接表面。电双层电容器还包括引线端子/电极板组件，其具有通过导电接合层与位于电池结构的相对端的集电体接合的电极板。包含在所述电池结构中的收集器之间的至少一个接口具有基于与可形成这种界面的两个集电器中的至少一个接触并与其相对的可极化电极的表面的粗糙表面形状的表面形状。因此，在双电层电容器中，在电容器的使用的初始阶段和电容器的长时间使用之后，可以实现较低的ESR。

2. 发明授权

US06636417B2 Electric double layer capacitor and battery 失效
公开(公告)号：US06636417B2
公开(公告)日：2003-10-21
申请号：US09862698
申请日：2001-05-23
申请人： Koji Sakata , Kazuya Mimura , Yutaka Nakazawa , Satoshi Abe
发明人： Koji Sakata , Kazuya Mimura , Yutaka Nakazawa , Satoshi Abe
IPC分类号： H01G900
CPC分类号： H01M10/0436 , H01G11/74 , H01G11/80 , H01G11/82 , H01M2/08 , Y02E60/13
摘要： An electric double layer capacitor, including at least one basic cell, an electrode plate, and an outer package which covers the basic cell and the electrode plate in a decompression state. The basic cell may be laminated in its thickness direction to form a layered cell and includes a separator, a pair of polarized electrodes disposed so as to sandwich the separator, a pair of collectors disposed so as to sandwich the polarized electrodes, and a gasket disposed between the pair of collectors so as to surround the pair of polarized electrodes. The electrode plate body is attached to each of the collectors located at the outermost side in a laminated direction of the layered cell. A sealing material having a higher gas barrier property than the collectors is disposed so as to seal an interface between the collectors and the electrode plate in the outer package.

3. 发明授权

US06625007B2 Electric double layer capacitor of low ESR value and a method of fabricating same with low percent defective 失效
公开(公告)号：US06625007B2
公开(公告)日：2003-09-23
申请号：US10096838
申请日：2002-03-14
申请人： Koji Sakata , Yutaka Nakazawa , Ryuichi Kasahara
发明人： Koji Sakata , Yutaka Nakazawa , Ryuichi Kasahara
IPC分类号： H01G900
CPC分类号： H01G9/155 , Y02E60/13 , Y10T29/417
摘要： A component cell of an electric double layer capacitor is fabricated by forming first and second half portions of the cell. In each of the half portions a polarized electrode impregnated with electrolyte is pasted to a collector electrode so that a stepped portion is formed on the periphery of the collector electrode. A gasket is attached to the stepped portion of each half portion, and a center gasket is attached to the periphery of a separator which is placed between the first and second half portions. Pressure is then applied to the first and second half portions of the cell in directions towards each other at an elevated temperature so that all gaskets are thermally joined together. A plurality of such component cells are stacked in a layered structure and sealed in a package.

4. 发明授权

US06870725B2 Electric double layer capacitor and battery 失效
标题翻译：电双层电容器和电池
公开(公告)号：US06870725B2
公开(公告)日：2005-03-22
申请号：US10612928
申请日：2003-07-07
申请人： Koji Sakata , Kazuya Mimura , Yutaka Nakazawa , Satoshi Abe
发明人： Koji Sakata , Kazuya Mimura , Yutaka Nakazawa , Satoshi Abe
IPC分类号： H01G11/00 , H01G9/00 , H01G9/10 , H01G11/10 , H01G11/12 , H01G11/42 , H01G11/66 , H01G11/70 , H01G11/80 , H01G11/86 , H01M2/08 , H01M4/66 , H01M10/04 , H01G4/35
CPC分类号： H01M10/0436 , H01G11/74 , H01G11/80 , H01G11/82 , H01M2/08 , Y02E60/13
摘要： An electric double layer capacitor, including at least one basic cell, an electrode plate, and an outer package which covers the basic cell and the electrode plate in a decompression state. The basic cell may be laminated in its thickness direction to form a layered cell and includes a separator, a pair of polarized electrodes disposed so as to sandwich the separator, a pair of collectors disposed so as to sandwich the polarized electrodes, and a gasket disposed between the pair of collectors so as to surround the pair of polarized electrodes. The electrode plate body is attached to each of the collectors located at the outermost side in a laminated direction of the layered cell. A sealing material having a higher gas barrier property than the collectors is disposed so as to seal an interface between the collectors and the electrode plate in the outer package.
摘要翻译：一种双电层电容器，包括至少一个基本电池，电极板和外包装，其在减压状态下覆盖碱性电池和电极板。碱性电池可以在其厚度方向上层叠以形成层状电池，并且包括隔板，设置成夹着隔板的一对极化电极，设置为夹着极化电极的一对集电体，以及设置有垫圈的垫圈在一对集电体之间围绕该对极化电极。电极板体沿层叠电池的层叠方向安装在位于最外侧的各集电体。设置具有比集电体高的阻气性的密封材料，以密封外包装中集电体和电极板之间的界面。

5. 发明授权

US06717795B2 Electric double-layer capacitor, and process for producing the same 有权
标题翻译：电双层电容器及其制造方法
公开(公告)号：US06717795B2
公开(公告)日：2004-04-06
申请号：US10284205
申请日：2002-10-31
申请人： Yutaka Nakazawa , Ryuichi Kasahara , Koji Sakata
发明人： Yutaka Nakazawa , Ryuichi Kasahara , Koji Sakata
IPC分类号： H01G900
CPC分类号： H01G9/155 , Y02E60/13
摘要： An electric double-layer capacitor includes a cell structure constituted by laminating basic cells in series with their collectors serving as connections. Each of the basic cells includes a pair of collectors, a separator disposed between the collectors, and a pair of polarizable electrodes which are disposed between the collectors and the separator and in which an electrolytic solution is contained. The capacitor further includes lead terminal/electrode plate assemblies each having an electrode plate electrically connected to the collectors at opposite ends of the cell structure. Each of the collectors includes a matrix made of an elastomer having a hardness Hs in a range of about 55 (inclusive) to lower than about 85 at ambient temperature, and conductive particles dispersed in the matrix. Thus, in the electric double-layer capacitor, a lower ESR can be realized at in initial stage and even after the service for a long period.
摘要翻译：电双层电容器包括通过与其作为连接的集电器串联层叠基本电池而构成的电池结构。每个基本单元包括一对集电器，设置在集电器之间的隔板和一对可极化电极，其设置在集电器和隔板之间，并且其中包含电解液。电容器还包括引线端子/电极板组件，每个引线端子/电极板组件都具有在电池结构的相对端处电连接到集电器的电极板。每个收集器包括由弹性体制成的基体，其在环境温度下的硬度Hs在约55（包含）至低于约85的范围内，导电颗粒分散在基质中。因此，在双电层电容器中，可以在初始阶段甚至在服务长时间之后实现较低的ESR。

6. 发明授权

US06671165B1 Electric double layer capacitor and production method thereof 有权
标题翻译：双电层电容器及其制造方法
公开(公告)号：US06671165B1
公开(公告)日：2003-12-30
申请号：US09652063
申请日：2000-08-31
申请人： Yutaka Nakazawa , Koji Sakata , Kazuya Mimura , Takashi Yasuda
发明人： Yutaka Nakazawa , Koji Sakata , Kazuya Mimura , Takashi Yasuda
IPC分类号： H01G900
CPC分类号： H01G11/80 , H01G11/66 , H01G11/68 , H01G11/70 , H01G11/78 , H01G11/84 , Y02E60/13 , Y10T29/417
摘要： A separator, a pair of polarized electrodes, gaskets holding the separator and the polarized electrodes from their sides, and a pair of the collectors provided in contact with the outer surfaces of polarized electrodes and gaskets are provided in an electric double layer capacitor. The collectors are a lamination having a conductive film formed by coating a conductive resin solution containing a conductive material to at least one surface of copper foil.
摘要翻译：分离器，一对极化电极，从其侧面保持隔板和极化电极的垫圈以及与极化电极和垫圈的外表面接触设置的一对集电体设置在双电层电容器中。集电体是具有通过将包含导电材料的导电树脂溶液涂覆到铜箔的至少一个表面而形成的导电膜的层压体。

7. 发明授权

US06657850B2 Electric double layer capacitor and method of forming the same 有权
标题翻译：双电层电容器及其形成方法
公开(公告)号：US06657850B2
公开(公告)日：2003-12-02
申请号：US10100136
申请日：2002-03-19
申请人： Yutaka Nakazawa , Koji Sakata , Ryuuichi Kasahara
发明人： Yutaka Nakazawa , Koji Sakata , Ryuuichi Kasahara
IPC分类号： H01G900
CPC分类号： H01G9/155 , H01G9/08 , Y02E60/13
摘要： An electrical double layer capacitor includes a capacitor cell structure comprising: a separator; polarization electrodes; collectors; and a gasket, wherein at least a part of at least either one of the collectors and the gasket has a gas permeability coefficient of at least 4.0E-12[m3/(m2·S·Pa)].
摘要翻译：电双层电容器包括电容器单元结构，包括：隔膜; 极化电极; 收藏家和垫圈，其中所述收集器和所述垫圈中的至少一个的至少一部分具有至少4.0E-12 [m 3 /（m 2·s·Pa）]的气体渗透系数。

8. 发明授权

US06341058B1 Electric double layer capacitor and method of forming the same 失效
标题翻译：双电层电容器及其形成方法
公开(公告)号：US06341058B1
公开(公告)日：2002-01-22
申请号：US09537731
申请日：2000-03-30
申请人： Koji Sakata , Kazuya Mimura , Yutaka Nakazawa
发明人： Koji Sakata , Kazuya Mimura , Yutaka Nakazawa
IPC分类号： H01G900
CPC分类号： H01G9/155 , Y02E60/13
摘要： The present invention provides an electric double layer capacitor having a pail of polarized electrodes separated by a separator, the polarized electrodes having surfaces facing to the separator, wherein substantially entire parts of the surfaces of the polarized electrodes are spaced from the separator to form inner spaces between the polarized electrodes and the separator.
摘要翻译：本发明提供一种双电层电容器，其具有由隔板隔开的极化电极桶，所述极化电极具有面向隔板的表面，其中极化电极的表面的大致整个部分与隔板隔开以形成内部空间在极化电极和分离器之间。

9. 发明授权

US06751084B2 Electric double layer capacitor and method for preparing the same 有权
标题翻译：双电层电容器及其制备方法
公开(公告)号：US06751084B2
公开(公告)日：2004-06-15
申请号：US10271986
申请日：2002-10-17
申请人： Yutaka Nakazawa , Ryuichi Kasahara , Koji Sakata
发明人： Yutaka Nakazawa , Ryuichi Kasahara , Koji Sakata
IPC分类号： H01G900
CPC分类号： H01G9/155 , Y02E60/13 , Y10T29/417
摘要： An electric double layer capacitor is disclosed which is capable of preventing transmission of an electrolytic solution vaporized in a basic cell through current collectors and capable of improving a yield. A method for preparing the electric double layer capacitor is also disclosed. The electric double layer capacitor includes a basic cell prepared by the steps of: applying a current collector onto a surface of a substrate; disposing an electrically insulating gasket element on the surface the substrate in such a manner that the current collector laterally abuts on the gasket element to define a concavity; placing a polarizable electrode impregnated with an electrolytic solution on the surface of the current collector; oppositely disposing two intermediate products prepared through the foregoing steps on a separator in such a manner that the gasket elements abut on surfaces of a peripheral portion of the separator; fusion-bonding the gasket elements together to laterally cover the separator with the resulting unified gasket; and removing the substrates from the current collectors and the gasket. The substrate has a vapor transmission rate of a predetermined one or lower with respect to the electrolytic solution vaporized at a temperature of the fusion-bonding.
摘要翻译：公开了一种双层电容器，其能够防止通过集电体在基本电池中蒸发的电解液的传输并且能够提高产率。还公开了一种制备双电层电容器的方法。电双层电容器包括通过以下步骤制备的碱性电池：将集电体施加到基板的表面上; 将电绝缘衬垫元件设置在衬底的表面上，使得集电器横向邻接衬垫元件以限定凹陷; 将浸渍有电解液的极化电极放置在集电体的表面上; 将上述步骤制备的两个中间产物相反地设置在分离器上，使得垫圈元件邻接隔膜的周边部分的表面; 将垫圈元件熔合在一起以用所得到的统一垫片横向覆盖隔板; 以及从集流器和垫圈中去除基板。基板相对于在熔接温度下蒸发的电解液的蒸气透过率为预定值以下。

10. 发明授权

US07092239B2 Electric double layer capacitor with improved activated carbon electrodes 失效
公开(公告)号：US07092239B2
公开(公告)日：2006-08-15
申请号：US10066693
申请日：2002-02-06
申请人： Yutaka Nakazawa , Koji Sakata , Ryuuichi Kasahara
发明人： Yutaka Nakazawa , Koji Sakata , Ryuuichi Kasahara
IPC分类号： H01G9/00
CPC分类号： H01G9/155 , Y02E60/13 , Y02T10/7022
摘要： An electric double layer capacitor comprises: a separator; a pair of electrodes separated by the separator, and the electrodes including activated carbon particles and a binder binding the activated carbon particles; and a pair of collectors separated by the pair of electrodes, wherein a density of the electrodes is in the range of 1.4 g/cm3 to 1.8 g/cm3.

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