公开(公告)号：US20170271709A1

公开(公告)日：2017-09-21

申请号：US15457279

申请日：2017-03-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Kiyomi KOZUKI

IPC: H01M10/04 ,  B23K26/21

CPC classification number: H01M10/0431 ,  B23K26/082 ,  B23K26/21 ,  B23K26/26 ,  B23K26/32 ,  B23K35/025 ,  B23K35/0255 ,  B23K35/0261 ,  B23K35/286 ,  B23K35/302 ,  B23K2101/36 ,  B23K2103/10 ,  H01M2/263 ,  H01M2220/20

Abstract: A secondary cell manufacturing method includes placing a current collector terminal on a plurality of laminated current collector foils from a lamination direction of the current collector foils. The current collector terminal has a first end portion, and a second end portion forming a cutout with the first end portion. The second end portion includes a base part, and a thin-walled part having a smaller thickness than the base part. The secondary cell manufacturing method includes welding the plurality of current collector foils to the current collector terminal by scanning the plurality of current collector foils disposed in the cutout with a laser beam along the first extension direction toward the second end portion while irradiating the plurality of current collector foils with the laser beam.

公开(公告)号：US20170229702A1

公开(公告)日：2017-08-10

申请号：US15421682

申请日：2017-02-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Yukinobu MIYAMURA ,  Hiroaki IMANISHI

IPC: H01M2/34 ,  H01M2/02 ,  H01M10/48 ,  H01M2/10

CPC classification number: H01M2/345 ,  H01M2/024 ,  H01M2/043 ,  H01M2/1077 ,  H01M2/30 ,  H01M10/48 ,  H01M2200/20 ,  H01M2220/20

Abstract: A secondary battery includes a current cut-off device that cuts off a current flow between a battery element and an external terminal of a positive electrode, and a bypass member electrically connected to an external terminal of a negative electrode. The current cut-off device includes a current collecting member electrically connected to the battery element inside an outer casing, and an inversion plate electrically connected to the current collecting member. The inversion plate comes apart from the current collecting member when the inner pressure of the outer casing becomes increased so as to cut off conduction between the battery element and the external terminal of the positive electrode, and becomes further deformed to electrically connect the bypass member and the external terminal of the positive electrode.

公开(公告)号：US20170170464A1

公开(公告)日：2017-06-15

申请号：US15325639

申请日：2015-05-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Tatsuya HASHIMOTO ,  Keisuke OHARA ,  Yusuke FUKUMOTO ,  Yuji YOKOYAMA

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/131 ,  H01M4/366 ,  H01M4/525 ,  H01M4/621 ,  H01M4/623 ,  H01M4/661 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/028

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator provided between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution at least held by the separator. The positive electrode has a positive electrode collector and a positive electrode mixture layer provided on the positive electrode collector. The positive electrode mixture layer has a first powder and a second powder. The first powder includes a first positive electrode active material, a first conductive material, and an organic-based binder. The second powder includes a second positive electrode active material, a second conductive material, and a water-based binder.

公开(公告)号：US20170098807A1

公开(公告)日：2017-04-06

申请号：US15264792

申请日：2016-09-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Hiroaki IMANISHI

IPC: H01M2/12 ,  H01M2/34 ,  H01M2/02 ,  H01M10/0525

CPC classification number: H01M2/1229 ,  H01M2/024 ,  H01M2/1247 ,  H01M2/345 ,  H01M10/0525 ,  H01M2200/20 ,  H01M2220/20

Abstract: A sealed battery with a battery element housed in a sealed casing. The sealed battery includes a valve brought into a closed state when a pressure of a gas in the casing is less than a first pressure P1, into an open state when the pressure is more than or equal to the first pressure P1 and less than a second pressure P2, and into the closed state when the pressure is more than or equal to the second pressure P2, and a safety mechanism configured to, when the internal pressure reaches a third pressure P3 exceeding the second pressure P2, operate in accordance with the third pressure P3.

公开(公告)号：US20170077543A1

公开(公告)日：2017-03-16

申请号：US15260514

申请日：2016-09-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Ichiro MURATA

IPC: H01M10/04 ,  H01M2/02 ,  H01M2/04 ,  B23K26/20

CPC classification number: H01M10/04 ,  B23K26/0608 ,  B23K26/082 ,  B23K26/206 ,  B23K2101/36 ,  H01M2/0217 ,  H01M2/0257 ,  H01M2/0285 ,  H01M2/0426 ,  H01M2/0439 ,  H01M2/0473 ,  H01M2/0486

Abstract: A method of manufacturing a secondary battery is provided. According to the manufacturing method, laser light includes first peak light applied to a first irradiation position located on a cover body, second peak light applied to a second irradiation position located between the first irradiation position and a connecting surface, and third peak light applied to the connecting surface. The first peak light is higher in intensity than the second peak light and the third peak light. The third peak light is higher in intensity than the second peak light.

Abstract translation: 提供一种制造二次电池的方法。 根据该制造方法，激光包括施加到位于盖体上的第一照射位置的第一峰值光，施加到位于第一照射位置和连接面之间的第二照射位置的第二峰值光， 连接面。 第一峰值光强度高于第二峰值光和第三峰值光。 第三峰值光强度高于第二峰值光。

公开(公告)号：US20170077478A1

公开(公告)日：2017-03-16

申请号：US15260474

申请日：2016-09-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Harunari SHIMAMURA ,  Yusuke FUKUMOTO ,  Koichi TORIYAMA

IPC: H01M2/16 ,  H01M10/0525

CPC classification number: H01M2/1686 ,  H01M2/1653 ,  H01M2/166

Abstract: A separator includes a base material layer and a heat resistance layer. The heat resistance layer includes, in a direction of thickness of the heat resistance layer, a central portion and a first end portion and a second end portion between which the central portion lies. The first end portion includes an interface with an electrode. The second end portion includes an interface with the base material layer. A composition ratio of a resin binder to a total mass of inorganic particles and the resin binder in the first end portion and the second end portion is not lower than 8 mass % and not higher than 30 mass %. A composition ratio of the resin binder to a total mass of the inorganic particles and the resin binder in the central portion is not lower than 2 mass % and not higher than 7 mass %.

Abstract translation: 隔板包括基材层和耐热层。 耐热层在耐热层的厚度方向上包括中心部分和第一端部以及中心部分所在的第二端部。 第一端部包括与电极的界面。 第二端部包括与基材层的界面。 第一端部和第二端部的树脂粘合剂与无机颗粒的总质量和树脂粘合剂的组成比不低于8质量％且不高于30质量％。 树脂粘合剂与中心部分的无机颗粒和树脂粘合剂的总质量的组成比不低于2质量％且不高于7质量％。

公开(公告)号：US20170062866A1

公开(公告)日：2017-03-02

申请号：US15243345

申请日：2016-08-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Ichiro MURATA

IPC: H01M10/04 ,  H01M10/058 ,  H01M2/30 ,  H01M10/0525 ,  H01M2/34 ,  H01M2/06

CPC classification number: H01M2/06 ,  H01M2/26 ,  H01M2/345 ,  H01M10/0525 ,  H01M10/058

Abstract: During joining, while the inversion plate is inserted in a recessed portion of the connecting member and an opening of the recessed portion faces upward in a vertical direction, a boundary at which an inner wall surface of the recessed portion faces an outer side surface of the inversion plate is continuously radiated with a laser beam from above by one round or more. The inner wall surface in a circular shape of the connecting member is an inclined surface inclined further apart from the outer side surface of the inversion plate as the inclined surface is located closer to the laser beam radiation side, and the inclined surface satisfies w/(h·D)≧0.002 (w: a length of the inclined surface in a radial direction, h: a height of the inclined surface, D: a diameter of the inclined surface on an opposite side to the laser beam radiation side).

Abstract translation: 在接合期间，当反转板插入连接构件的凹部并且凹部的开口在垂直方向上面时，凹部的内壁面朝向外侧面的边界 反转板用激光束从上方连续辐射一圈以上。 连接构件的圆形形状的内壁表面是倾斜表面，当倾斜表面位于更靠近激光束辐射侧时，倾斜表面倾斜于反转板的外侧表面，并且倾斜表面满足w /（ h·D）≥0.002（w：倾斜面的径向长度，h：倾斜面的高度，D：与激光束侧相反侧的倾斜面的直径）。

公开(公告)号：US20170025662A1

公开(公告)日：2017-01-26

申请号：US15117570

申请日：2015-02-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Kiyomi KOZUKI

IPC: H01M2/26

CPC classification number: H01M2/263

Abstract: An electrical storage device includes a polar plate and a collector plate. The polar plate includes a mixture layer and a collector. The collector includes an exposed portion. The exposed portion is exposed from the mixture layer in one end of the polar plate in a width direction. The collector plate includes a facing portion, a projection portion, and a corner portion. The facing portion is opposed to a tip end surface of the exposed portion. The projection portion extends from the facing portion so as to project toward the exposed portion relative to the facing portion. The corner portion is placed in a boundary between the facing portion and the projection portion. The collector plate is welded to the exposed portion in at least part of the corner portion.

Abstract translation: 蓄电装置包括极板和集电板。 极板包括混合层和集电体。 收集器包括暴露部分。 暴露部分从极板的一端在宽度方向上从混合层露出。 集电板包括面对部分，突出部分和拐角部分。 面对部分与暴露部分的顶端表面相对。 突起部分从相对部分延伸以相对于相对部分朝向暴露部分突出。 角部被放置在相对部分和突出部分之间的边界中。 收集板在至少部分角部焊接到暴露部分。

公开(公告)号：US20160260974A1

公开(公告)日：2016-09-08

申请号：US15061014

申请日：2016-03-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Naoto ONODERA ,  Naoyuki WADA ,  Yusuke FUKUMOTO ,  Tatsuya HASHIMOTO ,  Yuji YOKOYAMA ,  Hideki SANO

IPC: H01M4/62 ,  H01M10/0568 ,  H01M4/36 ,  H01M10/0525

CPC classification number: H01M4/364 ,  H01M2/1673 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/4235

Abstract: A lithium ion secondary battery includes: an electrode mixture layer that contains an electrode active material and an organic ferroelectric having a dielectric constant of 25 or higher; and an electrolytic solution that contains lithium bis(fluorosulfonyl)imide and a nonaqueous solvent. A content of the organic ferroelectric is 0.5 parts by mass to 10 parts by mass with respect to 100 parts by mass of the electrode active material. A proportion of a high-polarity solvent having a dielectric constant of 10 or higher in the nonaqueous solvent is 10 vol % or lower.

Abstract translation: 锂离子二次电池包括：电极混合层，其含有电介质常数为25以上的电极活性物质和有机铁电体; 和含有双（氟磺酰基）酰亚胺锂和非水溶剂的电解液。 相对于100质量份的电极活性物质，有机铁电体的含量为0.5质量份〜10质量份。 在非水溶剂中介电常数为10以上的高极性溶剂的比例为10体积％以下。

公开(公告)号：US20160141628A1

公开(公告)日：2016-05-19

申请号：US14941002

申请日：2015-11-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Tatsuya HASHIMOTO ,  Naoyuki WADA ,  Yusuke FUKUMOTO ,  Naoto ONODERA ,  Yuji YOKOYAMA

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/70

CPC classification number: H01M4/628 ,  H01M4/70 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2220/20

Abstract: A nonaqueous electrolyte secondary battery includes: a negative electrode current collector foil; and a negative electrode mixture layer that is arranged on the negative electrode current collector foil. The negative electrode mixture layer contains a plurality of granulated particles. Each of the granulated particles contains a negative electrode active material and a coating film. The coating film is formed on a surface of the negative electrode active material. The coating film includes a first film and a second film. The first film is formed on the surface of the negative electrode active material. The second film is formed on the first film. The first film contains a carboxymethyl cellulose polymer. The second film contains a polyacrylic acid polymer.

Abstract translation: 非水电解质二次电池包括：负极集电箔; 以及设置在负极集电箔上的负极合剂层。 负极混合层含有多个造粒颗粒。 每个造粒颗粒包含负极活性材料和涂膜。 涂膜在负极活性物质的表面上形成。 涂膜包括第一膜和第二膜。 第一膜形成在负极活性物质的表面上。 第二个膜形成在第一个膜上。 第一膜含有羧甲基纤维素聚合物。 第二层膜含有聚丙烯酸聚合物。