Patents by Inventor Hideki Sano
Hideki Sano 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: 10964976Abstract: An electrolyte solution for a lithium-ion battery is provided. The electrolyte solution contains at least a solvent and a lithium salt. The solvent contains at least methoxyacetone.Type: GrantFiled: February 11, 2019Date of Patent: March 30, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Iguchi, Hideki Sano
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Patent number: 10930976Abstract: An electrolyte solution is used for a lithium ion battery. The electrolyte solution contains at least a solvent and lithium salt. The solvent contains at least methoxymethyl formate.Type: GrantFiled: March 6, 2019Date of Patent: February 23, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Iguchi, Hideki Sano
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Patent number: 10727528Abstract: A method of producing a lithium ion secondary battery includes preparing a case in which an electrode group including at least a positive electrode and a negative electrode is accommodated; impregnating a first electrolyte solution into the electrode group, lowering a potential of the negative electrode to a first potential, injecting FEC into a case, and lowering a potential of the negative electrode to a second potential. The negative electrode contains at least graphite and silicon oxide. The first electrolyte solution does not contain FEC. An additive has a reductive decomposition potential of 0.5 V (vs. Li+/Li) or more and 1.5 V (vs. Li+/Li) or less. The first potential is higher than 0.2 V (vs. Li+/Li) and is equal to or lower than the reductive decomposition potential. The second potential is 0.2 V (vs. Li+/Li) or less.Type: GrantFiled: April 25, 2018Date of Patent: July 28, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Iguchi, Hideaki Fujita, Hideki Sano, Kaoru Inoue
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Patent number: 10720671Abstract: A nonaqueous electrolyte secondary battery includes a wound electrode assembly in which a positive electrode having, at its one end in a width direction, a positive electrode exposed portion provided without a positive electrode mixture layer on a positive electrode current collector and a negative electrode are wound together, with a separator interposed therebetween. The positive electrode exposed portion protrudes outward in an axial direction of the wound electrode assembly relative to the separator and the negative electrode at one end in the axial direction of the wound electrode assembly. The negative electrode exposed portion protrudes outward in the axial direction of the wound electrode assembly relative to the separator and the positive electrode at the other end in the axial direction. The positive electrode exposed portion has a cutout portion at least in an outermost circumferential portion of the positive electrode.Type: GrantFiled: November 20, 2015Date of Patent: July 21, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Yukiyoshi Ueno, Kaoru Inoue, Hideki Sano
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Patent number: 10517186Abstract: A surface-mountable socket has a wiping function. A socket 100 of the present technology can be surface-mounted to a board 210. The socket 100 includes a plurality of contacts 110, and each contact 110 includes a contact portion 112 that can contact a terminal of a semiconductor device, a locking portion 116 connected to the contact portion 112, and a board-side contact portion 118 that extends from the locking portion 116 and can contact a conductive region formed on a board surface. The socket 100 further includes a stopper member 120 that holds the locking portion 116 of the plurality of contacts 110 and a guide member 180 that is disposed so as to oppose the stopper member 120, and the guide member 180 is formed with a plurality of through holes 184 that houses a board-side contact 118 protruding from the stopper member.Type: GrantFiled: August 22, 2018Date of Patent: December 24, 2019Assignee: Sensata Technologies, Inc.Inventors: Hideyuki Takahashi, Hideki Sano
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Patent number: 10505215Abstract: There is provided a method of manufacturing a non-aqueous electrolyte secondary battery equipped with a wound electrode body that is formed by laminating and winding a positive electrode, a negative electrode, and a separator. This method includes preparing the wound electrode body including an uncoated portion of positive electrode active material layers and an uncoated portion of negative electrode active material layers, and not forming the positive electrode active material layers on at least a surface of a positive electrode current collector on a winding outer peripheral side thereof in a region that includes at least an outermost periphery of the positive electrode; structuring the secondary battery by accommodating the wound electrode body in a battery case; and subjecting the secondary battery to an aging treatment in which the secondary battery is retained within a temperature range that is equal to or higher than 60° C.Type: GrantFiled: July 31, 2013Date of Patent: December 10, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Kondo, Hideki Sano
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Publication number: 20190305373Abstract: An electrolyte solution for a lithium-ion battery is provided. The electrolyte solution contains at least a solvent and a lithium salt. The lithium salt is dissolved in the solvent. The solvent contains acetic anhydride at a concentration not lower than 80 vol %.Type: ApplicationFiled: March 26, 2019Publication date: October 3, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Iguchi, Hideki Sano
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Patent number: 10424816Abstract: A lithium-ion secondary battery (100) includes a wound electrode body (80), a nonaqueous electrolyte, and a box-shaped case (50). The wound electrode body includes a positive electrode (10), a negative electrode (20), and a separator (40). The box-shaped case contains the wound electrode body and the nonaqueous electrolyte. The wound electrode body includes a starting-end-side negative electrode remainder portion (22) provided in a winding-direction starting end portion (81) of the wound electrode body. The winding-direction starting end portion exists at a winding center side. The starting-end-side negative electrode remainder portion protrudes toward the winding center side along a winding direction beyond the positive electrode. A surplus nonaqueous electrolyte exists in a gap between the wound electrode body and the box-shaped case.Type: GrantFiled: November 27, 2014Date of Patent: September 24, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukiyoshi Ueno, Tomoyuki Mizuno, Kunimitsu Yamamoto, Junko Ohira, Kaoru Inoue, Hideaki Fujita, Hideki Sano
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Publication number: 20190288341Abstract: An electrolyte solution is used for a lithium ion battery. The electrolyte solution contains at least a solvent and lithium salt. The solvent contains at least methoxymethyl formate.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Inventors: Hiroki IGUCHI, Hideki SANO
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Publication number: 20190260081Abstract: An electrolyte solution for a lithium-ion battery is provided. The electrolyte solution contains at least a solvent and a lithium salt. The solvent contains at least methoxyacetone.Type: ApplicationFiled: February 11, 2019Publication date: August 22, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki IGUCHI, Hideki SANO
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Patent number: 10374255Abstract: Provided is a nonaqueous electrolyte secondary battery in which the following are housed in a battery case: a nonaqueous electrolyte, a boron atom-containing oxalato complex compound, and an electrode assembly in which a positive electrode having a positive electrode active material and a negative electrode having a negative electrode active material are disposed facing each other. Here, a coat containing boron atoms originating from the oxalato complex compound is formed on the surface of the negative electrode active material, and the amount BM (?g/cm2) of the boron atom as measured based on inductively coupled plasma-atomic emission spectroscopic analysis and the intensity BA for a tricoordinate boron atom as measured based on x-ray absorption fine structure analysis satisfy 0.5?BA/BM?1.0.Type: GrantFiled: April 30, 2013Date of Patent: August 6, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomohiro Nakano, Satoshi Goto, Tomohide Sumi, Hideki Sano
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Patent number: 10224564Abstract: A nonaqueous electrolyte secondary battery includes a wound electrode body, and the wound electrode body includes two curved portions and a center flat portion which has flat surfaces. A positive electrode winding end, a negative electrode winding end, and separator winding ends are positioned on the same curved portion. The negative electrode winding end is arranged at an advanced position from the positive electrode winding end in a winding direction, and at least one of the separator winding ends is positioned at an advanced position from the negative electrode winding end in the winding direction. A distance a (mm) from the negative electrode winding end to the separator winding end and a distance b (mm) from the positive electrode winding end to the negative electrode winding end satisfy relationships 0.5?a×(a+b)?104 and 0?b?11.Type: GrantFiled: June 20, 2016Date of Patent: March 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Yukiyoshi Ueno, Hideki Sano
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Publication number: 20190064214Abstract: A surface-mountable socket has a wiping function. A socket 100 of the present technology can be surface-mounted to a board 210. The socket 100 includes a plurality of contacts 110, and each contact 110 includes a contact portion 112 that can contact a terminal of a semiconductor device, a locking portion 116 connected to the contact portion 112, and a board-side contact portion 118 that extends from the locking portion 116 and can contact a conductive region formed on a board surface. The socket 100 further includes a stopper member 120 that holds the locking portion 116 of the plurality of contacts 110 and a guide member 180 that is disposed so as to oppose the stopper member 120, and the guide member 180 is formed with a plurality of through holes 184 that houses a board-side contact 118 protruding from the stopper member.Type: ApplicationFiled: August 22, 2018Publication date: February 28, 2019Applicant: Sensata Technologies, Inc.Inventors: Hideyuki Takahashi, Hideki Sano
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Publication number: 20180316040Abstract: A method of producing a lithium ion secondary battery includes preparing a case in which an electrode group including at least a positive electrode and a negative electrode is accommodated; impregnating a first electrolyte solution into the electrode group, lowering a potential of the negative electrode to a first potential, injecting FEC into a case, and lowering a potential of the negative electrode to a second potential. The negative electrode contains at least graphite and silicon oxide. The first electrolyte solution does not contain FEC. An additive has a reductive decomposition potential of 0.5 V (vs. Li+/Li) or more and 1.5 V (vs. Li+/Li) or less. The first potential is higher than 0.2 V (vs. Li+/Li) and is equal to or lower than the reductive decomposition potential. The second potential is 0.2 V (vs. Li+/Li) or less.Type: ApplicationFiled: April 25, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki IGUCHI, Hideaki FUJITA, Hideki SANO, Kaoru INOUE
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Patent number: 9997768Abstract: A lithium ion secondary battery involves a negative electrode sheet including a negative current collector and a negative active material layer that contains negative active material particles including first particles and second particles. In the negative active material layer, the ratio of the first particles to the total negative active material particles in a part on the current collector side in the layer thickness direction of the negative active material layer is higher than the ratio of the first particles to the total negative active material particles in the whole negative active material layer and the ratio of the second particles to the total negative active material particles in a part on an outer surface side of the negative active material layer in the layer thickness direction is higher than the ratio of the second particles to the total negative active material particles in the whole negative active material layer.Type: GrantFiled: December 6, 2010Date of Patent: June 12, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Takahata, Hideki Sano
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Patent number: 9905846Abstract: 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.Type: GrantFiled: March 4, 2016Date of Patent: February 27, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Naoto Onodera, Naoyuki Wada, Yusuke Fukumoto, Tatsuya Hashimoto, Yuji Yokoyama, Hideki Sano
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Publication number: 20170346138Abstract: A nonaqueous electrolyte secondary battery includes a wound electrode assembly in which a positive electrode having, at its one end in a width direction, a positive electrode exposed portion provided without a positive electrode mixture layer on a positive electrode current collector and a negative electrode are wound together, with a separator interposed therebetween. The positive electrode exposed portion protrudes outward in an axial direction of the wound electrode assembly relative to the separator and the negative electrode at one end in the axial direction of the wound electrode assembly. The negative electrode exposed portion protrudes outward in the axial direction of the wound electrode assembly relative to the separator and the positive electrode at the other end in the axial direction. The positive electrode exposed portion has a cutout portion at least in an outermost circumferential portion of the positive electrode.Type: ApplicationFiled: November 20, 2015Publication date: November 30, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Yukiyoshi UENO, Kaoru INOUE, Hideki SANO
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Patent number: 9698414Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode composite material layer containing first positive electrode active material particles containing a lithium nickel composite oxide, second positive electrode active material particles containing lithium iron phosphate, and a conductive material. A ratio of the second positive electrode active material particles in a total mass of the first positive electrode active material particles and the second positive electrode active material particles is not lower than 5 mass % and not higher than 20 mass %. A standard deviation ? representing distribution of an iron element satisfies a condition of 0.28???0.52 when distribution of the iron element is determined by conducting area analysis with an electron probe microanalyzer in a cross-section of the positive electrode composite material layer.Type: GrantFiled: April 22, 2015Date of Patent: July 4, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideyuki Saka, Hideaki Fujita, Keiichi Takahashi, Hideki Sano, Tatsuya Hashimoto
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Patent number: 9692048Abstract: A positive electrode collector includes a main body layer and a surface layer. The surface layer is provided at least at a portion of a surface of the main body layer where the positive electrode mixture layer is provided, and is made of a carbon material. A first positive electrode active material is made of first lithium complex oxide having a layered crystal structure. A second positive electrode active material includes a particle made of second lithium complex oxide having an olivine crystal structure, a carbon film provided at least at a part of a surface of the particle, and alginic acid salt provided at least at a part of a surface of the carbon film. A conducting agent in the positive electrode mixture layer includes a carbon particle and alginic acid salt provided at least at a part of a surface of the carbon particle.Type: GrantFiled: August 27, 2015Date of Patent: June 27, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Yusuke Fukumoto, Hideki Sano, Yuji Yokoyama, Tatsuya Hashimoto
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Publication number: 20170162912Abstract: A lithium-ion secondary battery (100) includes a wound electrode body (80), a nonaqueous electrolyte, and a box-shaped case (50). The wound electrode body includes a positive electrode (10), a negative electrode (20), and a separator (40). The box-shaped case contains the wound electrode body and the nonaqueous electrolyte. The wound electrode body includes a starting-end-side negative electrode remainder portion (22) provided in a winding-direction starting end portion (81) of the wound electrode body. The winding-direction starting end portion exists at a winding center side. The starting-end-side negative electrode remainder portion protrudes toward the winding center side along a winding direction beyond the positive electrode. A surplus nonaqueous electrolyte exists in a gap between the wound electrode body and the box-shaped case.Type: ApplicationFiled: November 27, 2014Publication date: June 8, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukiyoshi UENO, Tomoyuki MIZUNO, Kunimitsu YAMAMOTO, Junko OHIRA, Kaoru INOUE, Hideaki FUJITA, Hideki SANO