公开(公告)号：JP2014154360A

公开(公告)日：2014-08-25

申请号：JP2013023285

申请日：2013-02-08

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： HASHIMOTO TATSUYA ,  FUKUMOTO YUSUKE ,  YOKOYAMA YUJI ,  TORIYAMA KOICHI

IPC: H01M4/66 ,  H01M4/62

Abstract: PROBLEM TO BE SOLVED: To provide a collector for a nonaqueous electrolyte secondary battery, excellent in corrosion resistance (typically, alkali resistance) and capable of achieving low resistance.SOLUTION: The present invention provides a collector 32 including a base material 32a made of metal and a corrosion resistant layer 32b provided on a surface of the base material. The corrosion resistant layer 32b contains a carbon material 33, an alginic acid 34, and a compound 35 having a polyoxyalkylene styrenated phenyl ether structure. When the carbon material 33 is taken as 100 pts.mass, the percentage of the alginic acid 34 is 0.3 pt.mass or more and 10 pts.mass or less, and the percentage of the compound 35 having a polyoxyalkylene styrenated phenyl ether structure is 0.1 pt.mass or more and 2 pts.mass or less. In a preferable embodiment, the corrosion resistant layer 32b has an average thickness of 0.5 μm or more and 6.5 μm or less.

Abstract translation: 要解决的问题：提供一种非水电解质二次电池用集电体，其耐腐蚀性（通常为耐碱性）优异，能够实现低电阻。解决方案：本发明提供一种集电体32，其包括由金属制成的基材32a 以及设置在基材的表面上的耐腐蚀层32b。 耐腐蚀层32b含有碳材料33，藻酸34和具有聚氧化烯苯乙烯基苯基醚结构的化合物35。 当碳材料33为100质量份时，藻酸34的比例为0.3pt.mass以上且10质量份以下，具有聚氧化烯苯乙烯基苯基醚结构的化合物35的比例为 0.1 pt.mass以上2pts.mass以下。 在优选的实施方式中，耐腐蚀层32b的平均厚度为0.5μm以上且6.5μm以下。

公开(公告)号：JP2014102967A

公开(公告)日：2014-06-05

申请号：JP2012254046

申请日：2012-11-20

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： OHARA KEISUKE ,  YOKOYAMA YUJI ,  FUKUMOTO YUSUKE ,  HASHIMOTO TATSUYA

IPC: H01M4/139 ,  H01M4/13 ,  H01M4/1391 ,  H01M10/052

CPC classification number: Y02P70/54

Abstract: PROBLEM TO BE SOLVED: To provide a filtration filter which is a filter for filtrating slurry formed by dispersing at least an electrode active material and carbon black into a non-aqueous solvent and hard to generate an inconvenience such as clogging or the like.SOLUTION: A filter is provided which is for filtrating slurry for active material layer formation of a non-aqueous electrolyte secondary battery formed by dispersing at least an electrode active material and carbon black into a non-aqueous solvent. An aperture of such a filter is 50 μm or less. At least a portion on the surface of such a filter is formed with a material whose Hamaker constant is 6×10J or less.

Abstract translation: 要解决的问题：提供一种过滤器，其是通过将至少一种电极活性材料和炭黑分散在非水溶剂中而形成的用于过滤浆料的过滤器，并且难以产生诸如堵塞等的不便。 提供了一种过滤器，用于过滤通过将至少一种电极活性材料和炭黑分散在非水溶剂中形成的非水电解质二次电池的活性物质层形成的浆料。 这种过滤器的孔径为50μm以下。 这种过滤器的表面上的至少一部分由Hamaker常数为6×10J以下的材料形成。

公开(公告)号：JP2014053241A

公开(公告)日：2014-03-20

申请号：JP2012198359

申请日：2012-09-10

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TSUCHIYA KENJI ,  SUZUKI SHIGERU ,  NAKANO TAKAHIKO ,  ENOHARA KATSUSHI ,  SUGIHARA ATSUSHI ,  TSUTSUMI SHUJI ,  HASHIMOTO TATSUYA

IPC: H01M10/0587

Abstract: PROBLEM TO BE SOLVED: To provide a wound type nonaqueous electrolyte secondary battery having excellent processability, capable of suppressing a rise of a potential at a positive electrode end while preventing the occurrence of a failure such as winding deviation and burr in an electrode body, and also to provide a method for manufacturing the same.SOLUTION: A secondary battery 1 includes an electrode body 3 constituted by laminating a negative electrode sheet 32, a positive electrode sheet 31 and a separator 33 and furthermore, winding them therearound. In the electrode body 3, the negative electrode sheet 32 (negative electrode sheet 32A or negative electrode sheet 32B) constituting the outermost peripheral part of the electrode body 3 includes a recess 7 formed by coating a negative electrode mixture at the end in the width direction of the negative electrode sheet 32 with less amount in comparison with the negative electrode mixture in the other portion.

Abstract translation: 要解决的问题：提供一种具有优异加工性的卷绕型非水电解质二次电池，能够抑制正电极端的电位上升，同时防止诸如电极体中的卷绕偏差和毛刺的故障的发生，以及 也提供其制造方法。解决方案：二次电池1包括通过层压负极片32，正极片31和隔板33构成的电极体3，并且还包围它们。 在电极体3中，构成电极体3的最外周部的负极片32（负极片32A或负极片32B）具有通过在宽度方向的端部涂覆负极混合物而形成的凹部7 的负极片32与其他部分中的负极混合物相比具有较少的量。

公开(公告)号：JP2013246971A

公开(公告)日：2013-12-09

申请号：JP2012119982

申请日：2012-05-25

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MORITA MASAHIRO ,  FUKUMOTO YUSUKE ,  HASHIMOTO TATSUYA

IPC: H01M4/139 ,  H01M2/26 ,  H01M2/30 ,  H01M4/04 ,  H01M4/64 ,  H01M4/66 ,  H01M10/04 ,  H01M10/0587

CPC classification number: Y02P70/54

Abstract: PROBLEM TO BE SOLVED: To provide a battery in which there is no wrinkles in the boundary of the mixture layer coated part and the mixture layer uncoated part of an electrode substrate, and to provide a manufacturing method therefor.SOLUTION: The manufacturing method of a battery includes an electrode mixture layer formation step (S1) for forming an electrode mixture layer 159 by coating a part of the surface of an electrode substrate 158 with an electrode mixture containing an active material and then drying, and a press step (S3) for pressing the electrode mixture layer 159 in the thickness direction. The manufacturing method of a battery further includes a framing step (S2) for framing a part of the surface of the electrode substrate 158 not coated with the electrode mixture layer 159 in the electrode mixture layer formation step (S1) or a mixture layer uncoated part 158b, prior to the press step (S3).

Abstract translation: 要解决的问题：提供一种电池，其中在混合层涂覆部分和电极基底的混合层未涂覆部分的边界处不会有皱纹，并提供其制造方法。 电池包括用于通过用含有活性物质的电极混合物涂覆电极基板158的一部分表面然后干燥来形成电极混合物层159的电极混合物层形成步骤（S1），以及用于 在厚度方向上按压电极混合物层159。 电池的制造方法还包括框架步骤（S2），用于在电极混合物层形成步骤（S1）中框架未涂覆有电极混合物层159的电极基板158的表面的一部分或混合层未涂覆部分 158b，在压制步骤（S3）之前。

公开(公告)号：JP2013229248A

公开(公告)日：2013-11-07

申请号：JP2012101693

申请日：2012-04-26

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MORITA MASAHIRO ,  YOKOYAMA YUJI ,  OHARA KEISUKE ,  FUKUMOTO YUSUKE ,  HASHIMOTO TATSUYA

IPC: H01M4/04 ,  H01M4/139

CPC classification number: Y02P70/54

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a battery capable of improving filter permeability of an electrode paste and battery productivity.SOLUTION: A method for manufacturing a battery 100 comprises: a step S1 of granulating an active material particle 125 including a 1.0 to 15.0 wt% fine particle having a grain diameter of 0.1 to 3.0 μm; a step S2 of creating a paste; a step S3 of making a filter permeable; and a step S4 of forming an active material layer. A ratio of fine particles after granulation having a grain diameter of 0.1 to 3.0 μm in the granulation particle formed in the step S1 is lower than a ratio of fine particles in the active material particle 125. The ratio of fine particles after granulation in the granulation particle is not more than 10.0 wt%, and an occupation ratio of granulation particles having a grain diameter of 90 μm or lower is not less than 99.8 wt%.

Abstract translation: 要解决的问题：提供一种能够提高电极浆料的过滤器渗透性和电池生产率的电池的制造方法。解决方案：电池100的制造方法包括：将活性物质粒子125造粒的步骤S1包括1.0 至15.0重量％的粒径为0.1〜3.0μm的微粒; 制作糊状物的步骤S2; 使过滤器渗透的步骤S3; 以及形成活性物质层的工序S4。 在步骤S1中形成的造粒颗粒中，粒径为0.1〜3.0μm的造粒后的微粒的比例低于活性物质粒子125中的微粒的比例。粒化后的细粒比例 粒径不大于10.0重量％，粒径为90μm以下的造粒粒子的占有率为99.8重量％以上。

公开(公告)号：JP2013218934A

公开(公告)日：2013-10-24

申请号：JP2012089703

申请日：2012-04-10

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MORITA MASAHIRO ,  OHARA KEISUKE ,  HASHIMOTO TATSUYA ,  YOKOYAMA YUJI

IPC: H01M10/0567 ,  H01M2/04 ,  H01M2/34 ,  H01M10/052

CPC classification number: Y02E60/122 ,  Y02T10/7011

Abstract: PROBLEM TO BE SOLVED: To provide a sealed type nonaqueous secondary battery, incorporating a current cutoff mechanism actuated by a rise in the internal pressure of a battery case, which maintains high battery performance and further exhibits increased reliability under a wider range of temperature environments than before.SOLUTION: A sealed type nonaqueous secondary battery having a cathode including a cathode active material, an anode including an anode active material, and a nonaqueous electrolyte housed in a battery case is provided by the present invention. Here, the nonaqueous electrolyte contains a redox shuttle agent which can cause reversible oxidation-reduction reaction to occur at higher potential than the cathode active material, a gas generating agent which can be decomposed to generate gas when a designated battery voltage is exceeded, and a viscosity adjustment agent which can restrain a reduction in the viscosity of the nonaqueous electrolyte due to a rise in temperature. Also, the battery case is provided with a current cutoff mechanism which is actuated when the internal pressure of the battery case rises as the gas is generated.

Abstract translation: 要解决的问题：提供一种密封型非水二次电池，其包括由电池壳体的内部压力升高致动的电流切断机构，其保持高电池性能，并且在更宽的温度环境范围内进一步显示出增加的可靠性， 本发明提供了一种密封型非水二次电池，其具有包括正极活性物质的阴极，包含阳极活性物质的阳极和容纳在电池壳体中的非水电解质。 这里，非水电解质含有氧化还原穿梭剂，能够使比可以比阴极活性物质更高的电位发生可逆的氧化还原反应，能够在超过指定的电池电压时分解而产生气体的气体发生剂， 可以抑制由于温度上升引起的非水电解液粘度降低的粘度调节剂。 此外，电池壳体设置有当电池壳体的内部压力随着气体产生而升高时被致动的电流切断机构。

公开(公告)号：JP2013218898A

公开(公告)日：2013-10-24

申请号：JP2012088844

申请日：2012-04-09

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MORITA MASAHIRO ,  FUKUMOTO YUSUKE ,  HASHIMOTO TATSUYA

IPC: H01M10/058 ,  H01M2/10 ,  H01M2/16 ,  H01M10/0587

CPC classification number: Y02E60/12

Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery in which retention of the nonaqueous electrolyte between positive and negative electrodes is enhanced.SOLUTION: A nonaqueous electrolyte secondary battery including an electrode body, in which a porous filler layer is interposed between a positive electrode and a negative electrode, is provided. The porous filler layer of the nonaqueous electrolyte secondary battery contains a nonaqueous electrolyte. The electrode body has an opening communicating from a region between the positive electrode and negative electrode to the outside of the electrode body. The porous filler layer includes a first region, and a second region located closer to the opening side than at least a part of the first region. The second region has a porosity lower than that of the first region, and a hardness higher than that of the first region.

Abstract translation: 要解决的问题：提供一种非水电解质二次电池，其中非水电解质在正极和负极之间的保持性得到提高。解决方案：一种非水电解质二次电池，包括电极体，其中多孔填料层介于阳极 电极和负极。 非水电解质二次电池的多孔填充剂层含有非水电解质。 电极体具有从正极和负极之间的区域到电极体的外部连通的开口。 多孔填充层包括第一区域和位于比第一区域的至少一部分更靠近开口侧的第二区域。 第二区域具有低于第一区域的孔隙度，并且硬度高于第一区域的硬度。

公开(公告)号：JP2013131322A

公开(公告)日：2013-07-04

申请号：JP2011278486

申请日：2011-12-20

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MORITA MASAHIRO ,  HASHIMOTO TATSUYA ,  OHARA KEISUKE ,  YOKOYAMA YUJI ,  FUKUMOTO YUSUKE

IPC: H01M10/052 ,  H01M4/13 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0566 ,  H01M10/0587

CPC classification number: Y02E60/122 ,  Y02T10/7011

Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery in which the impregnation property of a positive electrode mixture layer is enhanced in the central part thereof in the winding axis direction, and superior battery performance is ensured by preventing outflow of nonaqueous electrolyte from the positive electrode mixture layer during charge/discharge.SOLUTION: In the nonaqueous electrolyte secondary battery, both ends 66A, 66A of a positive electrode mixture layer 66 in the winding axis direction of a wound electrode are mainly composed of a first positive electrode material 68A, and the central part 66B including at least the center of the positive electrode mixture layer 66 in the winding axis direction is mainly composed of a second positive electrode material 68B. The amount of DBP absorption (mL/100 g) is different from each other between the first positive electrode material and second positive electrode material, and the amount of DBP absorption A(mL/100 g) of the first positive electrode material is smaller than the amount of DBP absorption B(mL/100 g) of the second positive electrode material.

Abstract translation: 要解决的问题：提供一种非水电解质二次电池，其中正中电极混合物层的浸渍性在其卷绕轴线方向的中心部分增强，并且通过防止非水电解质从 在非水电解质二次电池中，正极复合层66的缠绕电极卷绕轴方向的两端66A，66A主要由第一正极材料68A， 并且至少包括正极复合层66的卷绕轴方向的中心的中心部66B主要由第二正极材料68B构成。 DBP吸收量（mL / 100g）在第一正极材料和第二正极材料之间彼此不同，第一正极材料的DBP吸收量A（mL / 100g）小于 第二正极材料的DBP吸收量B（mL / 100g）。

公开(公告)号：JP2013122332A

公开(公告)日：2013-06-20

申请号：JP2011270531

申请日：2011-12-09

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： NAKANO TAKAHIKO ,  TSUCHIYA KENJI ,  TSUTSUMI SHUJI ,  HASHIMOTO TATSUYA

IPC: F26B13/10 ,  B05C9/14 ,  B05D7/00 ,  B05D7/14 ,  H01M4/04

CPC classification number: H01M4/0404 ,  H01M4/70 ,  H01M10/0525 ,  Y02T10/7011

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing an electrode at low cost by efficiently drying a coated foil formed of a metal foil coated with a paste-like coating material while restraining migration.SOLUTION: The method for manufacturing an electrode includes: a coating step for forming the coated foil 2 by applying the coating material 4 to the metal foil 3 while the metal foil is fed forward; and a drying step for heating and drying the coated foil 2 while the coated foil 2 passes through a drying oven 20 of a drying machine 10 disposed in line on a feeding path. The drying oven 20 includes four drying chambers 21, 22, 23, and 24 divided and arranged by three partitions, and has at least a first drying chamber 21 through which the coated foil 2 first passes in the drying process and a second drying chamber 22 through which the coated foil passes subsequent to the first drying chamber 21. The volume V1 of the first drying chamber 21 is smaller than the volume V2 of the second drying chamber 22 by making the area of a cross-section S1 perpendicular to a feed direction F along the feeding path smaller than a cross-section S2 of the second drying chamber 22.

Abstract translation: 解决的问题：为了提供一种低成本地制造电极的方法，通过在抑制迁移的同时有效地干燥由涂覆有糊状涂层材料的金属箔形成的涂覆箔。 电极的制造方法包括：涂覆步骤，用于在金属箔向前馈送的同时将涂覆材料4施加到金属箔3上形成涂覆箔2; 以及干燥步骤，用于在涂覆的箔片2通过在输送路径上成行设置的干燥机10的干燥炉20中加热和干燥涂布的箔片2。 干燥箱20包括四个由三个隔板分隔并布置的干燥室21,22,23和24，并且至少具有第一干燥室21，涂布的箔2在干燥过程中首先通过该第一干燥室21和第二干燥室22 涂布的箔通过其穿过第一干燥室21之后。通过使横截面S1的面积与进料方向垂直，第一干燥室21的体积V1小于第二干燥室22的体积V2 F沿着进给路径小于第二干燥室22的横截面S2。版权所有：（C）2013，JPO＆INPIT

公开(公告)号：JP2013026123A

公开(公告)日：2013-02-04

申请号：JP2011161894

申请日：2011-07-25

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TAKAHATA KOJI ,  MIHASHI TOSHIHIKO ,  HASHIMOTO TATSUYA ,  FUJITA HIDEAKI ,  HIRAKAWA YASUSHI

IPC: H01M10/058 ,  H01M2/26 ,  H01M4/13 ,  H01M4/64 ,  H01M4/70 ,  H01M10/052 ,  H01M10/0587

CPC classification number: Y02E60/122 ,  Y02T10/7011

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery and an electrode plate of the secondary battery, in which curvature of a current collector foil is restrained after rolling an electrode plate.SOLUTION: A lithium ion secondary battery has an electric power generation element, in which a positive electrode plate 61 and a negative electrode plate are laminated to sandwich a separator. Then, for example, a positive electrode current collector foil 611 of the positive electrode plate 61 includes a coating region P1 that is a region in which a positive electrode mixture layer 612 exists when seen from a thickness direction, and a non-coating region P2 that is positioned at one end of a width direction of the positive electrode current collector 611 and is a region in which the positive electrode mixture layer 612 does not exist. A relationship between thickness TA of the coating region P1 of the positive electrode current collector foil 611 and thickness TB of a width direction end P4 of the non-coating region P2 satisfies TA>TB.

Abstract translation: 要解决的问题：提供二次电池的二次电池和电极板，其中在电极板滚动之后抑制集电箔的曲率。 解决方案：锂离子二次电池具有发电元件，其中层叠正极板61和负极板以夹持隔板。 然后，例如，正极板61的正极集电箔611包括作为从厚度方向观察时存在正极复合层612的区域的涂布区域P1和非涂覆区域P2 其位于正极集电体611的宽度方向的一端，并且是不存在正极合剂层612的区域。 正极集电体箔611的涂布区域P1的厚度TA与非涂覆区域P2的宽度方向结束P4的厚度TB之间的关系满足TA> TB。 版权所有（C）2013，JPO＆INPIT