公开(公告)号：US08455132B2

公开(公告)日：2013-06-04

申请号：US11698206

申请日：2007-01-26

申请人： Masato Fujikawa ,  Shinji Kasamatsu ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Shinji Kasamatsu ,  Mikinari Shimada

IPC分类号： H01M2/16

CPC分类号： H01M10/0525 ,  H01M2/1653 ,  H01M2/1686 ,  H01M4/131 ,  H01M4/133 ,  H01M10/44 ,  H01M10/46

摘要： A lithium ion secondary battery includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator interposed between the positive electrode and the negative electrode. The separator includes a polyolefin layer and an oxidation-resistant layer. The oxidation-resistant layer includes an oxidation-resistant polymer. A main chain of the oxidation-resistant polymer does not include a —CH2— group and a —CH(CH3)— group. The oxidation-resistant layer faces the positive electrode.

摘要翻译： 锂离子二次电池包括正电极，负电极，非水电解质和介于正电极和负电极之间的隔膜。 隔板包括聚烯烃层和抗氧化层。 抗氧化层包括抗氧化聚合物。 抗氧化聚合物的主链不包括-CH 2 - 基和-CH（CH 3） - 基。 抗氧化层面向正极。

公开(公告)号：US08318347B2

公开(公告)日：2012-11-27

申请号：US12247666

申请日：2008-10-08

申请人： Tomohiko Yokoyama ,  Masato Fujikawa ,  Hideharu Takezawa ,  Shinji Kasamatsu

发明人： Tomohiko Yokoyama ,  Masato Fujikawa ,  Hideharu Takezawa ,  Shinji Kasamatsu

IPC分类号： H01M4/13 ,  H01M10/50 ,  H01M2/26 ,  H01M4/64

CPC分类号： H01M10/0585 ,  H01M2/0227 ,  H01M4/134 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/623 ,  H01M10/647 ,  H01M10/651 ,  H01M10/6553 ,  Y02T10/7011

摘要： In a lithium ion secondary battery including a flat-plate electrode assembly which is configured by stacking the positive electrode, the separator, and the negative electrode in the thickness direction thereof, each of the positive electrode and the negative electrode includes a current collector and an active material layer. Each of the current collector includes a substantially rectangular current collector body, a heat radiating portion, and a lead portion, and the heat radiating portions are projected toward the outside of the electrode assembly so as not to overlap with each other in the thickness direction of the electrode assembly. In this way, heat caused inside the lithium ion secondary battery can be diffused efficiently to the outside, and safety of the lithium ion secondary battery can be further increased, without complicating the battery structure and decreasing mechanical strength of the battery.

摘要翻译： 在包括通过在其厚度方向堆叠正极，隔板和负极而构成的平板电极组件的锂离子二次电池中，正电极和负电极都包括集电体和 活性物质层。 每个集电器包括基本上矩形的集电体，散热部分和引线部分，并且散热部分朝向电极组件的外部突出，以便在电极组件的外侧不会在厚度方向上彼此重叠 电极组件。 以这种方式，锂离子二次电池内产生的热可以有效地扩散到外部，并且可以进一步提高锂离子二次电池的安全性，而不会使电池结构复杂化并且降低电池的机械强度。

公开(公告)号：US08168314B2

公开(公告)日：2012-05-01

申请号：US12446869

申请日：2007-11-21

申请人： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

IPC分类号： H01M2/00 ,  H01M10/48

CPC分类号： H01M10/4235 ,  G01R31/025 ,  G01R31/3641 ,  H01M10/052 ,  H01M10/4285 ,  H01M10/48 ,  H01M10/488 ,  Y10T29/49108

摘要： Methods for evaluating battery safety under internal short-circuit conditions are improved to eliminate variations in evaluation results and accurately evaluate battery safety under internal short-circuit conditions. An internal short-circuit is caused in a battery by using an internal short-circuit causing method in which battery information obtained upon the occurrence of an internal short-circuit hardly changes with the structure of the battery. At this time, the battery information is detected to accurately evaluate the safety of the battery upon the internal short-circuit and identify the safety level.

摘要翻译： 改善在内部短路条件下评估电池安全性的方法，以消除评估结果的变化，并在内部短路条件下准确评估电池安全性。 通过使用在内部短路发生时获得的电池信息几乎不随电池结构而变化的内部短路引起方法在电池中引起内部短路。 此时，检测出电池信息，以便在内部短路时精确地评估电池的安全性并识别安全等级。

公开(公告)号：US08138747B2

公开(公告)日：2012-03-20

申请号：US12027111

申请日：2008-02-06

申请人： Hajime Nishino ,  Kenichi Suzuki ,  Shinji Kasamatsu ,  Masato Fujikawa ,  Mikinari Shimada

发明人： Hajime Nishino ,  Kenichi Suzuki ,  Shinji Kasamatsu ,  Masato Fujikawa ,  Mikinari Shimada

IPC分类号： G01N27/416

CPC分类号： H01M10/4285

摘要： The present invention relates to an internal short circuit evaluation method for a battery including an electrode group including a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, and an outer jacket covering the electrode group, the method including the steps of: (I) processing the electrode group to a predetermined position of the electrode group, from the outside of the electrode group toward the inside thereof; and (II) causing a short circuit between a portion of the electrode plate and a portion of the negative electrode plate of the electrode group that are located inside from the predetermined position, and measuring battery information that is changed by the short circuit, and an evaluation apparatus used for the above-described method.

摘要翻译： 本发明涉及一种电池的内部短路评估方法，该电池包括具有正电极板，负极板和设置在正极板和负极板之间的隔板的电极组，以及覆盖电极的外护套 该方法包括以下步骤：（I）从电极组的外部向其内部处理电极组到电极组的预定位置; 和（II）在所述电极板的一部分与所述电极组的所述负极板的与所述预定位置对应的部分之间产生短路，并且测量由所述短路而变化的电池信息，以及 用于上述方法的评估装置。

公开(公告)号：US20110236765A1

公开(公告)日：2011-09-29

申请号：US13132503

申请日：2010-08-30

申请人： Toru Matsui ,  Masato Fujikawa

发明人： Toru Matsui ,  Masato Fujikawa

IPC分类号： H01M10/056

CPC分类号： H01M10/0569 ,  H01M4/13 ,  H01M6/164 ,  H01M2300/0034

摘要： The nonaqueous solvent for a nonaqueous secondary battery of the present invention includes: a fluorinated cyclic carbonate having at least one fluorine in each designated location in the molecule; and a fluorinated phosphazene having at least one fluorine bound to a phosphorus atom in the phosphazene molecule and a ratio of the number of fluorine atoms to the number of phosphorus atoms being 4/3 or more. The fluorinated cyclic carbonate forms a good protective coat by reductive decomposition at a negative electrode, thereby improving cycle characteristics of the nonaqueous secondary battery. The fluorinated phosphazene suppresses generation of organic ions in the nonaqueous solvent, thereby reducing gas production in the nonaqueous secondary battery.

摘要翻译： 本发明的非水系二次电池用非水溶剂包括：在分子中的每个指定位置具有至少一个氟的氟化环状碳酸酯; 以及在磷腈分子中具有与磷原子结合的至少一个氟并且氟原子数与磷原子数的比例为4/3以上的氟化磷腈。 氟化环状碳酸酯通过在负极处的还原分解形成良好的保护层，从而提高非水系二次电池的循环特性。 氟化磷腈抑制非水溶剂中的有机离子的产生，从而降低非水系二次电池中的气体产生。

公开(公告)号：US20110236761A1

公开(公告)日：2011-09-29

申请号：US13037908

申请日：2011-03-01

申请人： Kazuki ENDO ,  Masato Fujikawa

发明人： Kazuki ENDO ,  Masato Fujikawa

IPC分类号： H01M4/66

CPC分类号： H01M4/13 ,  H01M2/08 ,  H01M4/139 ,  H01M10/0587

摘要： An insulating resin layer is formed on part of the surface of a current collector of an electrode plate for a battery. The insulating resin layer is formed on at least part of a portion at which a mixture particle is not in contact with the surface of the current collector, in the area in which an electrode mixture layer is formed on the surface of the current collector.

摘要翻译： 在用于电池的电极板的集电体的一部分表面上形成绝缘树脂层。 绝缘树脂层形成在集电体表面上形成电极混合层的区域中，混合粒子与集电体的表面不接触的部分的至少一部分。

公开(公告)号：US20110159382A1

公开(公告)日：2011-06-30

申请号：US13003182

申请日：2010-04-27

申请人： Toru Matsui ,  Masato Fujikawa

发明人： Toru Matsui ,  Masato Fujikawa

IPC分类号： H01M6/16 ,  B01F1/00

CPC分类号： H01M10/0569

摘要： The nonaqueous solvent of the present invention for a nonaqueous secondary battery primarily contains a mixed solvent of a fluorinated cyclic carbonate having a structure in which one fluorine atom is bonded to each of two alkoxy group carbon atoms adjacent to carbonate oxygen atoms and a fluorinated acyclic carbonate having a similar structure. The fluorinated cyclic carbonate, in comparison with the unsubstituted cyclic carbonate, has not only an enhanced thermal stability but also a suppressed reactivity with the positive electrode in a charged state even at elevated temperatures. In addition, it forms a protective film which, with respect to a negative electrode in a charged state, suppresses reactivity between the negative electrode and the nonaqueous electrolyte solution. The fluorinated acyclic carbonate suppresses the reactivity with the positive electrode in a charged state and also lowers the viscosity of the nonaqueous electrolyte solution.

摘要翻译： 本发明的非水系二次电池用非水溶剂主要含有具有与碳酸酯氧原子相邻的两个烷氧基碳原子中的一个氟原子键合的氟化环状碳酸酯和氟化无环碳酸酯的混合溶剂 具有相似的结构。 与未取代的环状碳酸酯相比，氟化环状碳酸酯不仅具有增强的热稳定性，而且即使在升高的温度下也具有抑制与带电状态下的正极的反应性。 此外，它形成保护膜，其相对于带电状态的负极抑制负极和非水电解质溶液之间的反应性。 氟化无环碳酸酯在充电状态下抑制与正极的反应性，并且还降低非水电解液的粘度。

公开(公告)号：US07695854B2

公开(公告)日：2010-04-13

申请号：US11698094

申请日：2007-01-26

申请人： Masato Fujikawa ,  Kaoru Inoue ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Kaoru Inoue ,  Mikinari Shimada

IPC分类号： H01M4/64

CPC分类号： H01M10/0525 ,  H01M2/14 ,  H01M2/1673 ,  H01M2/1686 ,  H01M2/26 ,  H01M4/13 ,  H01M4/70 ,  H01M10/044 ,  Y02T10/7011

摘要： A lithium secondary battery including: a positive electrode including a strip-shaped positive electrode current collector and a positive electrode active material layer carried on each surface of the positive electrode current collector; a negative electrode including a strip-shaped negative electrode current collector and a negative electrode active material layer carried on each surface of the negative electrode current collector; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein an exposed portion carrying no active material layer is formed on a substantially center portion in a longitudinal direction of a least one of the positive electrode current collector and the negative electrode current collector, a current collecting lead is connected to the exposed portion, and a first heat resistant layer is formed such that the first heat resistant faces at least part of the current collecting lead.

摘要翻译： 一种锂二次电池，包括：正极，包括带状正极集电体和在正极集电体的每个表面上承载的正极活性物质层; 在负极集电体的各表面上承载有带状的负极集电体和负极活性物质层的负极， 夹在正极和负极之间的隔膜; 和非水电解质，其中，在正极集电体和负极集电体中的至少一个的长度方向的大致中央部形成有不具有活性物质层的露出部，连结集电引线 并且形成第一耐热层，使得第一耐热面朝向集流引线的至少一部分。

公开(公告)号：US20090104515A1

公开(公告)日：2009-04-23

申请号：US12255963

申请日：2008-10-22

申请人： Masato Fujikawa ,  Hideharu Takezawa ,  Miyuki Nakai

发明人： Masato Fujikawa ,  Hideharu Takezawa ,  Miyuki Nakai

IPC分类号： H01M10/36 ,  H01M2/14

CPC分类号： H01M10/0568 ,  H01M2/1653 ,  H01M10/0569

摘要： A lithium secondary battery of this invention includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; a separator; and a non-aqueous electrolyte. The negative electrode active material includes a first portion capable of absorbing and desorbing lithium ions and a second portion covering at least a part of a surface of the first portion. The second portion includes at least one material that is less reactive with oxygen than the first portion.

摘要翻译： 本发明的锂二次电池包括：正极，包括正极活性物质; 负极，包括负极活性物质; 分隔符 和非水电解质。 负极活性物质包括能够吸收和解吸锂离子的第一部分和覆盖第一部分表面的至少一部分的第二部分。 第二部分包括至少一种与氧气比第一部分反应性低的材料。

公开(公告)号：US20080193848A1

公开(公告)日：2008-08-14

申请号：US12030411

申请日：2008-02-13

申请人： Masato Fujikawa ,  Masaya Ugaji ,  Takayuki Shirane ,  Kaoru Inoue

发明人： Masato Fujikawa ,  Masaya Ugaji ,  Takayuki Shirane ,  Kaoru Inoue

IPC分类号： H01M4/58

CPC分类号： H01M10/0525 ,  H01M4/70 ,  H01M4/75 ,  H01M4/78

摘要： A non-aqueous electrolyte secondary battery comprising a negative electrode having a current collector provided with convex portions and concave portions on both surfaces, a first columnar body formed in a tilting orientation on the convex portion on one of the surfaces of the current collector, and a second columnar body formed in a tilting orientation on the convex portion on the other surface, a positive electrode having a positive electrode current collector provided with a positive electrode mixture layer containing a positive electrode active material capable of reversibly inserting and extracting lithium ions on both surfaces, and a separator interposed between the positive electrode and the negative electrode in a confronting manner, wherein the first columnar body and the second columnar body on the negative electrode are tilted to an orthogonal direction of a winding direction of the current collector.

摘要翻译： 一种非水电解质二次电池，包括具有集电体的负极，所述集电器在两个表面上设置有凸部和凹部，在所述集电体的一个表面上的所述凸部上以倾斜取向形成的第一柱状体，以及 在另一个表面的凸部上以倾斜取向形成的第二柱状体，具有正极集电体的正极，该正极集电体设置有包含能够在两者上可逆地插入和提取锂离子的正极活性物质的正极合剂层 表面和以相对方式夹在正极和负极之间的隔膜，其中负极上的第一柱状体和第二柱状体沿着集电体的卷绕方向的正交方向倾斜。