Patents by Inventor Takeshi Ogasawara

Takeshi Ogasawara 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).

  • Publication number: 20240154108
    Abstract: This positive-electrode active material for non-aqueous electrolyte secondary batteries is provided with: an electrode assembly; a bottomed cylindrical exterior body having an outer diameter of 25 mm or more, that houses the electrode assembly and is connected to a negative electrode; and, a sealing body that seals an opening at the upper end of the exterior body and is connected to a positive electrode. The positive electrode includes a positive-electrode current collector, and a positive-electrode mixture layer formed on the surface of the positive-electrode current collector and containing a positive-electrode active material and an electroconductive agent. The positive-electrode active material includes a lithium-containing composite oxide having a chalcogen compound and/or a halogen compound adhered to the surface and a layered rock salt structure. Area basis weight of the positive-electrode mixture layer is 250 g/m2 or more. In the electrode assembly, three or more positive-electrode leads are led out.
    Type: Application
    Filed: January 6, 2022
    Publication date: May 9, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shinya Geshi, Katsuya Inoue, Takeshi Ogasawara
  • Publication number: 20240145700
    Abstract: This positive electrode included in an electrode assembly includes a positive electrode current collector and a positive electrode mixture laver which is formed on the surface of the positive electrode current collector and which includes a positive electrode active material and a conductive agent. The positive electrode active material contains a lithium-containing complex oxide. The lithium-containing complex oxide has a layered rock salt structure, contains substantially no Co, and contains at least Ni and Mn. The Ni content in the lithium-containing complex oxide is not less than 70 mol % with respect to the total number of moles of metal elements excluding Li. The basis weight of the positive electrode mixture layer is not less than 250 g/m2. Three or more positive electrode leads are drawn out in the electrode assembly.
    Type: Application
    Filed: January 6, 2022
    Publication date: May 2, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shinya Geshi, Katsuya Inoue, Takeshi Ogasawara
  • Patent number: 11933520
    Abstract: A fluid-heating device for heating fluid with a heater includes: a heating portion that is molded so as to cover the surrounding of the heater; and a support body integrally cast into the heating portion, the heating portion being molded in a state in which the heater is supported by the support body in a die for molding the heating portion.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: March 19, 2024
    Assignee: MARELLI CABIN COMFORT JAPAN CORPORATION
    Inventors: Takeshi Ogasawara, Naohisa Kamiyama, Hiroki Yoshioka, Takashi Otsuka, Daiju Suzuki
  • Publication number: 20240058675
    Abstract: The positive electrode active material for a non-aqueous electrolyte secondary cell according to an embodiment of the present disclosure is characterized in having a Ni-containing lithium transition metal oxide having a layered structure; the proportion of Ni in the lithium transition metal oxide being 91 to 96 mol % relative to the total number of moles of metal elements excluding Li; a transition metal being present in the Li layer of the layered structure at an amount of 1 to 2.5 mol % relative to the total number of moles of transition metals in the Ni-containing lithium transition metal oxide; and the Ni-containing lithium transition metal oxide being such that the half width n of the diffraction peak for the (208) plane in an X-ray diffraction pattern obtained by X-ray diffraction is 0.30°?n?0.50°.
    Type: Application
    Filed: October 17, 2023
    Publication date: February 22, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Aoki, Takeshi Ogasawara
  • Publication number: 20240055595
    Abstract: The positive electrode contains a lithium-transition metal composite oxide. With respect to the lithium-transition metal composite oxide, the content of Ni is from 80% by mole to 95% by mole relative to the total number of moles of metal elements excluding Li, and the content of Mo is less than 3% by mole relative to the total number of moles of metal elements excluding Li. The negative electrode comprises a negative electrode mixture layer that contains a negative electrode active material, and a coating film that is formed on the surface of the negative electrode mixture layer, while containing Mo. The content of Mo in the negative electrode is from 0.5 ppm to 120 ppm relative to the total mass of the lithium-transition metal composite oxide in the positive electrode.
    Type: Application
    Filed: December 6, 2021
    Publication date: February 15, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Aoki, Takeshi Ogasawara, Naoya Fujitani
  • Publication number: 20240047645
    Abstract: Provided is a positive electrode active substance that increases the discharge capacity of a battery. This positive electrode for a non-aqueous electrolyte secondary battery comprises a positive electrode current collector and a positive electrode mixture layer formed on the surface of the positive electrode current collector. The positive electrode mixture layer contains: a positive electrode active substance that includes a lithium transition metal complex oxide with a layered halite structure; and a phosphate. The lithium transition metal complex oxide contains at least nickel and aluminum, and calcium and/or strontium; the content ratio of nickel in the lithium transition metal complex oxide is at least 75 mol % relative to the total amount of metal elements other than lithium; and the phosphate content of the positive electrode mixture layer, if the positive electrode active substance content is 100 parts by mass, is 0.1-5 parts by mass.
    Type: Application
    Filed: December 1, 2021
    Publication date: February 8, 2024
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Ko, Katsuya Inoue, Takeshi Ogasawara
  • Publication number: 20240038970
    Abstract: A positive electrode active material included in this non-aqueous electrolyte secondary battery positive electrode includes a lithium-transition metal composite oxide. The lithium-transition metal composite oxide contains 80-95 mol % of Ni and 0-20 mol % of Mn, and 3-8 mol % of a metal element other than Li is present in a Li layer of the lithium-transition metal composite oxide. The ratio m/n of the half width m of the diffraction peak for the (003) plane to the half width n of the diffraction peak for the (110) plane in an x-ray diffraction pattern obtained by x-ray diffraction of the positive electrode active material satisfies 0.72?m/n?0.85. The lithium-transition metal composite oxide is formed from secondary particles that are aggregates of primary particles, the internal porosity of the secondary particles being 1%-5%.
    Type: Application
    Filed: December 1, 2021
    Publication date: February 1, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masakazu Togo, Yoshinori Aoki, Takeshi Ogasawara
  • Publication number: 20240006604
    Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries according to one embodiment of the present invention contains: a first lithium transition metal composite oxide that is represented by general formula LixNi1-y-zCoyMzO2 (wherein 0.8?x?1.2, 0?y?0.2, 0<z?0.5, and M represents at least one metal element excluding Li, Ni and Co); and a second lithium transition metal composite oxide that has at least one diffraction peak which has a peak top at a diffraction angle (2?) of from 21.40° to 21.65° in radiation X-ray diffraction (with a light energy of 16 keV).
    Type: Application
    Filed: November 4, 2021
    Publication date: January 4, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Daizo JITO, Tomohiro HARADA, Noriko FUKAMICHI, Takeshi OGASAWARA
  • Publication number: 20240006651
    Abstract: This non-aqueous electrolyte secondary battery, which is one example of an embodiment, comprises: a positive electrode that has a positive electrode mixture layer; a negative electrode; a separator that is interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode mixture layer contains a first lithium-and-transition-metal composite oxide represented by general formula LixNi1?y?zCoyMzO2 (in the formula, 0.8?x?1.2, 0?y?0.2, 0<z?0.5, and M is at least one metal element excluding Li, Ni, and Co), and a second lithium-and-transition-metal composite oxide represented by general formula LiaNi2?a?bMebO2 (in the formula, 0<a?0.5, 0?b?0.5, and Me is at least one metal element excluding Li and Ni). The separator has: a base material; and a surface layer that includes inorganic particles and a binder, and is formed on the surface of the base material facing toward the positive electrode.
    Type: Application
    Filed: November 30, 2021
    Publication date: January 4, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Noriko Fukamichi, Tomohiro Harada, Takeshi Ogasawara, Daizo Jito
  • Publication number: 20240006603
    Abstract: The positive electrode mixture layer of this nonaqueous electrolyte secondary battery positive electrode, which is one exemplary embodiment, contains a first lithium-transition-metal composite oxide represented by general formula LixNi1?y?zCoyMzO2 (in the formula. 0.8?x?1.2, 0?y?0.2, 0<z?0.5, and M is at least one metal element excluding Li, Ni, and Co), a second lithium-transition-metal composite oxide represented by general formula LiaNi2?a?bMebO2 (in the formula, 0<a?0.5, 0?b?0.5, and Me is at least one metal element excluding Li and Ni), and a carbon nanotube.
    Type: Application
    Filed: November 30, 2021
    Publication date: January 4, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomohiro Harada, Noriko Fukamichi, Takeshi Ogasawara, Daizo Jito
  • Publication number: 20230411694
    Abstract: This non-aqueous electrolyte secondary battery, which is one example of an embodiment, comprises: a positive electrode that has a positive electrode mixture layer; a negative electrode; and a non-aqueous electrolyte. The positive electrode mixture layer contains a first lithium-and-transition-metal composite oxide represented by general formula LixNi1-y-zCoyMzO2 (in the formula, 0.8?x?1.2, 0?y?0.2, 0<z?0.5, and M is at least one metal element excluding Li, Ni, and Co), and a second lithium-and-transition-metal composite oxide represented by general formula LiaNi2-a-bMebO2 (in the formula, 0<a?0.5, 0?b?0.5, and Me is at least one metal element excluding Li and Ni). The non-aqueous electrolyte contains a sulfonyl imide salt.
    Type: Application
    Filed: November 30, 2021
    Publication date: December 21, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Noriko Fukamichi, Tomohiro Harada, Takeshi Ogasawara, Daizo Jito
  • Publication number: 20230395785
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery according to one exemplary embodiment comprises: a first lithium transition metal composite oxide represented by general formula LiaNibM11-bO2 (in the formula, 1.5?a?2.5, 0.95?b?1.00, and M1 is at least one metal element excluding Li and Ni); and a second lithium transition metal composite oxide represented by general formula LicNi2-c-dM2dO2 (in the formula, 0<c?0.5, 0?d?0.5, and M2 is at least one metal element excluding Li and Ni).
    Type: Application
    Filed: December 15, 2021
    Publication date: December 7, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Daizo Jito, Tomohiro Harada, Noriko Fukamichi, Takeshi Ogasawara
  • Patent number: 11831013
    Abstract: The positive electrode active material for a non-aqueous electrolyte secondary cell according to an embodiment of the present disclosure is characterized in having a Ni-containing lithium transition metal oxide having a layered structure; the proportion of Ni in the lithium transition metal oxide being 91 to 96 mol % relative to the total number of moles of metal elements excluding Li; a transition metal being present in the Li layer of the layered structure at an amount of 1 to 2.5 mol % relative to the total number of moles of transition metals in the Ni-containing lithium transition metal oxide; and the Ni-containing lithium transition metal oxide being such that the half width n of the diffraction peak for the (208) plane in an X-ray diffraction pattern obtained by X-ray diffraction is 0.30°?0?0.50°.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: November 28, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Aoki, Takeshi Ogasawara
  • Publication number: 20230335711
    Abstract: A positive electrode active material according to the present invention contains first and second lithium-transition metal complex oxides at respective predetermined proportions. The first lithium-transition metal complex oxide includes a core containing at least Li, Ni, and M1 (M1 is at least one element selected from the group consisting of Mn, W, Mg, Mo, Nb, Ti, Si, and Al), and a surface modification layer that is present at least on the surface of the core. The surface modification layer includes M2 (M2 is at least one element selected from the group consisting of Sr, Ca, W, Mg, Nb, and Al). The second lithium-transition metal complex oxide includes at least a compound represented by general formula LiaNibM31-bO2 (in the formula. 1.5?a?2.5 and 0.95?b?1 are satisfied, and M3 is at least one element selected from the group consisting of Cu, Sr, Ca, Nb, Si, and Al).
    Type: Application
    Filed: August 18, 2021
    Publication date: October 19, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Daizo Jito, Tomohiro Harada, Noriko Fukamichi, Takeshi Ogasawara
  • Publication number: 20230299282
    Abstract: A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte; the positive electrode contains a lithium transition metal composite oxide that contains Ni, Nb and M (M is at least one element selected from among Ca and Sr), said lithium transition metal composite oxide optionally containing Co; the contents of Ni, Nb, M and Co in the lithium transition metal composite oxide are respectively within specific ranges; the negative electrode comprises a negative electrode mixture layer that contains a negative electrode active material, and a coating film that is formed on the surface of the negative electrode mixture layer, while containing Nb and M; and the contents of Nb and M in the negative electrode are respectively within specific ranges.
    Type: Application
    Filed: October 28, 2021
    Publication date: September 21, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takaya Tochio, Takeshi Ogasawara
  • Publication number: 20230290941
    Abstract: A positive-electrode active material includes a lithium transition metal composite oxide that contains at least 80 mol % of Ni in relation to the total molar amount of metal elements excluding Li. The lithium transition metal composite oxide includes secondary particles obtained by the aggregation of primary particles, at least one element A selected from Ca and Sr being present on the surface of the primary particles in an amount of 1 mol % or less in relation to the total molar amount of metal elements excluding Li, and S and at least one element B selected from Zr, Ti, Mn, Er, Pr, In, Sn, and Ba being present on the surface of the secondary particles.
    Type: Application
    Filed: June 14, 2021
    Publication date: September 14, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshinobu Kanai, Takeshi Ogasawara
  • Publication number: 20230238525
    Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries is composed of single particles and/or secondary particles containing not more than 10 primary particles, of a lithium transition metal composite oxide containing not less than 85% by mole of Ni relative to the total number of moles of metal elements other than Li. In the positive electrode active material, the particle cross-sections of the single particles and the primary particles of the lithium transition metal composite oxide each have a polygonal shape that includes a side having a length of 1.5 ?m or greater, and at least three interior angles of the polygonal shape are 45-160°.
    Type: Application
    Filed: March 9, 2021
    Publication date: July 27, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Motoharu Saito, Takeshi Ogasawara
  • Publication number: 20230216024
    Abstract: Provided is a positive electrode for a non-aqueous electrolyte secondary battery, the positive electrode comprising: a positive electrode current collector; and a positive electrode mixture layer formed on the surface of the positive electrode current collector. The positive electrode mixture layer contains at least carbon fibers and a positive electrode active material containing a lithium-transition metal composite oxide, wherein the lithium-transition metal composite oxide has a layered rock salt structure, is substantially free of Co, and contains at least Ni, Al, and Sr.
    Type: Application
    Filed: April 20, 2021
    Publication date: July 6, 2023
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Katsuya Inoue, Takeshi Ogasawara, Yoshinori Aoki, Youichirou Uka
  • Publication number: 20230216046
    Abstract: The method for manufacturing a positive electrode active material for a non-aqueous electrolyte secondary battery according to one embodiment of the present invention comprises: a first step for adding an alkaline solution having a tungsten compound dissolved therein to a lithium-metal composite oxide powder represented by general formula LizNi1-x-yCoxMyO2 (where 0?x?0.1, 0?y?0.1, and 0.97?z?1.20 are satisfied, and M is at least one type of element selected from among Mn, W, Mg, Mo, Nb, Ti, Si, and Al), and mixing same; and a second step for heating the mixture of the alkaline solution and the lithium-metal composite oxide powder at 100-600° C., wherein the amount of the alkaline solution to be added in the first step is 0.1-10 mass % with respect to the amount of the lithium-metal composite oxide powder.
    Type: Application
    Filed: February 17, 2023
    Publication date: July 6, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takaya Tochio, Toshinobu Kanai, Takeshi Ogasawara
  • Publication number: 20230207794
    Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries comprises a lithium transition metal composite oxide that has secondary particles each formed from aggregated primary particles and a surface modification layer that is formed on the surface of each of the primary particles of the lithium transition metal composite oxide, in which the lithium transition metal composite oxide contains at least Al and Ni in an amount of 80 mol % or more relative to the total number of moles of metal elements excluding Li, the surface modification layer contains W and at least one of Sr and Ca, and the content of W in the surface modification layer is 0.075 mol % or less relative to the total number of moles of the metal elements excluding Li in the lithium transition metal composite oxide.
    Type: Application
    Filed: April 20, 2021
    Publication date: June 29, 2023
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Katsuya Inoue, Takeshi Ogasawara, Yoshinori Aoki