Patents by Inventor Shigetaka Nagamatsu
Shigetaka Nagamatsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11302953Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and a contact resistance between the cathode current collector and the anode current collector in the surface-side cell is more than a contact resistance between the cathode current collector and the anode current collector in the center-side cell.Type: GrantFiled: April 13, 2018Date of Patent: April 12, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Publication number: 20220021000Abstract: Provided is a sulfide all-solid battery having an anode current collector of powerful adhesiveness which is difficult to be sulfurized. The sulfide all-solid-state battery including: a cathode layer; an anode layer; and a sulfide solid electrolyte layer disposed between the cathode layer and the anode layer, wherein the anode layer has an anode mixture layer, and an anode current collector on a face of the anode mixture layer, the face being on an opposite side of the sulfide solid electrolyte layer, the anode current collector is electrolytic iron foil that does not substantially contain other elements, and the anode current collector has surface roughness Ra of 0.2 ?m to 0.6 ?m, and surface roughness Rz of 2 ?m to 6 ?m.Type: ApplicationFiled: July 14, 2021Publication date: January 20, 2022Applicants: Toyota Jidosha Kabushiki Kaisha, Toyo Kohan Co., Ltd.Inventors: Hajime Hasegawa, Shigetaka Nagamatsu, Shinichirou Horie, Koh Yoshioka, Toshifumi Koyanagi, Etsuro Tsutsumi, Michio Kawamura, Yuma Yoshizaki
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Patent number: 11075409Abstract: A main object of the present disclosure is to provide a stacked battery in which the unevenness of short circuit resistance among a plurality of cells is suppressed.Type: GrantFiled: April 13, 2018Date of Patent: July 27, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Patent number: 10910677Abstract: An objective of the present disclosure is to provide a stacked battery that suppresses sneak current caused by an unevenness of a short circuit resistance among a plurality of cells. The present disclosure provides a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; wherein a resistance of the cathode current collecting tab in the surface-side cell is more than a resistance of the cathode current collecting tab in the center-side cell; or a resistance of the anode current collecting tab in the surface-side cell is more than a resistance of the anode current collecting tab in the center-side cell.Type: GrantFiled: April 13, 2018Date of Patent: February 2, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Patent number: 10559845Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed.Type: GrantFiled: April 13, 2018Date of Patent: February 11, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Publication number: 20180316065Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a short circuit resistance among a plurality of cells, is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316066Abstract: A main object of the present disclosure is to provide a stacked battery in which the unevenness of short circuit resistance among a plurality of cells is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316049Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and a contact resistance between the cathode current collector and the anode current collector in the surface-side cell is more than a contact resistance between the cathode current collector and the anode current collector in the center-side cell.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316048Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Patent number: 10084161Abstract: A battery includes an electrode body having a positive electrode and a negative electrode and also includes an exterior case for receiving the electrode body. An insulation film for isolating the exterior case and the electrode body from each other is placed between an inner wall surface of the exterior case and the electrode body. The insulation film has a bag-like shape in which the electrode body is inserted. The bag-like insulation film has a gap filling section on its surface facing a side surface of the electrode body, and the gap filling section closes a gap between the electrode body and the inner wall surface of the exterior case.Type: GrantFiled: August 12, 2008Date of Patent: September 25, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shigetaka Nagamatsu, Takayuki Tanahashi, Hiroyuki Tanaka
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Patent number: 8828600Abstract: The present disclosure provides a battery, which includes a case having through holes, electric terminals projecting outward from the case and fixed to the holes, and insulating members interposed between the case and the terminals. A flanged portion standing out from the case, located around the hole is formed, a reinforcing member is fitted to the outer periphery of the flanged portion that reinforces against the outward force applied to the flanged portion, and the terminal and the insulating member are inserted into the flanged portion, and then the flanged portion is press-fitted from the outside of the case for fixing the terminal to the hole. The battery may have a high sealing property at the fitted portion among the case and the terminal.Type: GrantFiled: July 24, 2009Date of Patent: September 9, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyasu Kado, Shigeru Takashiro, Shigetaka Nagamatsu, Keigo Yamada, Kaori Ueda, Takahiro Oshima
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Patent number: 8211567Abstract: A sealed battery includes: a battery container having in at least an end portion thereof an opening portion, and a container folded-back portion formed in a peripheral edge of the opening portion; a lid having in its outer periphery a lid folded-back portion, and being attached to the opening portion of the battery container; a junction portion in which the container folded-back portion and the lid folded-back portion are integrally joined by a double-rolled seam method; a first seal member closing a first gap between a distal end portion of the container folded-back portion clamping a distal end portion of the lid folded-back portion and an inside of a folded curve portion of the lid folded-back portion; and a second seal member closing a second gap between the distal end portion of the lid folded-back portion and an inside of a folded curve portion of the container folded-back portion.Type: GrantFiled: November 24, 2008Date of Patent: July 3, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideki Hori, Shigetaka Nagamatsu
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Publication number: 20120115022Abstract: The present invention provides a step (S1) for manufacturing a battery (10), which includes a case (30) having through holes (33), electric terminals (40) projecting outward from the case (30) and fixed to the holes (33), and insulating members (50) interposed between the case (30) and the terminals (40). In the step (S1), a flanged portion (34) standing out from the case (30), located around the hole (33) is formed, a reinforcing member (35) is fitted to the outer periphery of the flanged portion (34) that reinforces against the outward force applied to the flanged portion (34), and the terminal (40) and the insulating member (50) are inserted into the flanged portion (34), and then the flanged portion (34) is press-fitted from the outside of the case (30) for fixing the terminal (40) to the hole (33). According to the present invention, the battery with high sealing property at the fitted portion among the case and the terminal.Type: ApplicationFiled: July 24, 2009Publication date: May 10, 2012Inventors: Hiroyasu Kado, Shigeru Takashiro, Shigetaka Nagamatsu, Keigo Yamada, Kaori Ueda, Takahiro Oshima
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Patent number: 8142317Abstract: A drive unit includes an input shaft connected to an engine, a power conversion unit including rotating electric machines and planetary gears to convert power applied from the input shaft, and gears as the power output unit transmitting power output from the power conversion unit to a drive shaft of the vehicle. Planetary gears of the power conversion unit are formed separately from the gears. The rotating electric machines of the power conversion unit are stored in a unitary case.Type: GrantFiled: April 10, 2006Date of Patent: March 27, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Shigetaka Nagamatsu
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Publication number: 20110274828Abstract: An electrode manufacturing apparatus (100) is provided with an unwinding unit (10), a first oven end unit (20), a drying oven (30), a second oven end unit (80), and a winding unit (90). The first oven end unit (20) is provided with a first coating unit (27) that coats a first side of an electrode foil (2) and a second coating unit (28) that coats a second side of the electrode foil (2). The electrode manufacturing apparatus (100) is further provided with turn-back roller pairs (25), (26), (85), (86) that invert an advancement direction of the electrode foil and displace a width direction position of the electrode foil by turning the electrode foil back at an angle. As a result, the coated electrode foil (2) reciprocates through the interior of the drying oven (30) at least one and a half times.Type: ApplicationFiled: February 8, 2010Publication date: November 10, 2011Inventor: Shigetaka Nagamatsu
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Publication number: 20100209750Abstract: A battery includes an electrode body having a positive electrode and a negative electrode and also includes an exterior case for receiving the electrode body. An insulation film for isolating the exterior case and the electrode body from each other is placed between an inner wall surface of the exterior case and the electrode body. The insulation film has a bag-like shape in which the electrode body is inserted. The bag-like insulation film has a gap filling section on its surface facing a side surface of the electrode body, and the gap filling section closes a gap between the electrode body and the inner wall surface of the exterior case.Type: ApplicationFiled: August 12, 2008Publication date: August 19, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shigetaka Nagamatsu, Takayuki Tanahashi, Hiroyuki Tanaka
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Publication number: 20100041502Abstract: A drive unit includes an input shaft connected to an engine, a power conversion unit including rotating electric machines and planetary gears to convert power applied from the input shaft, and gears as the power output unit transmitting power output from the power conversion unit to a drive shaft of the vehicle. Planetary gears of the power conversion unit are formed separately from the gears. The rotating electric machines of the power conversion unit are stored in a unitary case.Type: ApplicationFiled: April 10, 2006Publication date: February 18, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shigetaka Nagamatsu
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Publication number: 20090142660Abstract: A sealed battery includes: a battery container having in at least an end portion thereof an opening portion, and a container folded-back portion formed in a peripheral edge of the opening portion; a lid having in its outer periphery a lid folded-back portion, and being attached to the opening portion of the battery container; a junction portion in which the container folded-back portion and the lid folded-back portion are integrally joined by a double-rolled seam method; a first seal member closing a first gap between a distal end portion of the container folded-back portion clamping a distal end portion of the lid folded-back portion and an inside of a folded curve portion of the lid folded-back portion; and a second seal member closing a second gap between the distal end portion of the lid folded-back portion and an inside of a folded curve portion of the container folded-back portion.Type: ApplicationFiled: November 24, 2008Publication date: June 4, 2009Inventors: Hideki HORI, Shigetaka Nagamatsu
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Patent number: 6656082Abstract: In a hybrid vehicle of the present invention, a clutch motor, an assist motor, and an engine are connected via a dual clutch, which includes an inner clutch arranged between an inner shaft and a middle shaft and an outer clutch arranged between the middle shaft and an outer shaft. An inner rotor of the clutch motor and the engine are linked with the inner shaft. The assist motor is linked with the middle shaft. An outer rotor of the clutch motor and an axle are linked with the outer shaft. Changing the coupling state of the middle shaft changes over the connection of the assist motor between the engine and the clutch motor. The connection of the assist motor with the clutch motor in the state of underdrive or in the case of a requirement of abrupt acceleration desirably improves the driving efficiency and ensures the smooth acceleration.Type: GrantFiled: October 10, 2000Date of Patent: December 2, 2003Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinori Yamada, Shigetaka Nagamatsu
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Patent number: 6359359Abstract: A rotor piece has a plurality of holes 12. Each hole holds therein a plurality of substantially divided permanent magnets 14 that are arranged in a circumferential direction. Therefore, each permanent magnet is small and the flow passage of eddy currents becomes narrow, so that the magnitude of eddy currents becomes small. The total eddy currents in all the permanent magnets is also reduced, so that the eddy current loss can be reduced and the heat generation of the motor can be reduced. Adjacent ones of the substantially divided permanent magnets may be interconnected at portions thereof. One or more of the substantially divided permanent magnets 14 in one or more holes may be ferrite magnets, with other permanent magnets being rare-earth magnets.Type: GrantFiled: November 15, 1999Date of Patent: March 19, 2002Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tetsuya Miura, Masaru Hirako, Shigetaka Nagamatsu, Yasutomo Kawabata, Tetsuya Sugimoto