Patents by Inventor Shohei KAWASHIMA
Shohei KAWASHIMA 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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Publication number: 20240343604Abstract: Disclosed is a method of increasing the capacity of a P2 type positive electrode active material. A method of manufacturing a positive electrode active material of the present disclosure includes obtaining a Na containing transition metal oxide having a P2 type structure, and further doping the Na containing transition metal oxide with Na.Type: ApplicationFiled: April 2, 2024Publication date: October 17, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shohei KAWASHIMA, Jun YOSHIDA, So Yubuchi, Satoshi Wakasugi
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Publication number: 20240347720Abstract: The disclosed secondary battery includes a cathode active material layer, a solid electrolyte layer, and an anode active material layer, wherein the cathode active material layer includes a cathode active material having a O2 type construction, and the cathode active material layer includes an inorganic solid electrolyte having a Young's modulus of 30 GPa or less.Type: ApplicationFiled: January 22, 2024Publication date: October 17, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shohei KAWASHIMA, Jun Yoshida, So Yubuchi
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Publication number: 20240270601Abstract: Disclosed is a method for increasing capacity of an O2-type positive electrode active material. The method for manufacturing a positive electrode active material of the present disclosure comprises obtaining a Na-containing transition metal oxide having a P2-type structure, substituting at least a portion of Na in the Na-containing transition metal oxide with Li by ion exchange to obtain a Li-containing transition metal oxide having an O2-type structure, and further doping the Li-containing transition metal oxide with Li in a step separate from the ion exchange.Type: ApplicationFiled: February 6, 2024Publication date: August 15, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kentaro MATSUMOTO, Shohei KAWASHIMA, So YUBUCHI, Jun YOSHIDA, Satoshi WAKASUGI
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Publication number: 20240248109Abstract: An automatic analyzer includes a probe, a cleaner, and a controller. The probe includes a detector for detecting a contact with a liquid. The probe sucks and discharges the liquid. The cleaner cleans an outer wall of the probe with a cleaning fluid. The controller causes the detector to perform a detection during cleaning by the cleaner, and judges a state of the cleaner based on a result of the detection.Type: ApplicationFiled: December 8, 2023Publication date: July 25, 2024Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yoshihiro JIFUKU, Shohei KAWASHIMA, Tamaki HONDA, Masakazu KITAMURA, Gaku UENO
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Publication number: 20240234737Abstract: Provided is an all-solid-state battery capable of suppressing a rise in the resistance increase ratio thereof. The all-solid-state battery includes an anode active material layer containing an alloy-based active material, a first fibrous carbon, and a second fibrous carbon, wherein when a fiber diameter of the first fibrous carbon is defined as A, and a fiber diameter of the second fibrous carbon is defined as B, the ratio of A to B is 10 to 300, and when the proportion (wt %) of the first fibrous carbon to the alloy-based active material is defined as X, and the proportion (wt %) of the second fibrous carbon to the alloy-based active material is defined as Y, the proportion ({Y/(X+Y)}×100%) of the contained second fibrous carbon to a total of the first fibrous carbon and the second fibrous carbon is 0.5% to 10%.Type: ApplicationFiled: March 27, 2024Publication date: July 11, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shohei Kawashima
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Patent number: 11984602Abstract: Provided is an all-solid-state battery capable of suppressing a rise in the resistance increase ratio thereof. The all-solid-state battery includes an anode active material layer containing an alloy-based active material, a first fibrous carbon, and a second fibrous carbon, wherein when a fiber diameter of the first fibrous carbon is defined as A, and a fiber diameter of the second fibrous carbon is defined as B, the ratio of A to B is 10 to 300, and when the proportion (wt %) of the first fibrous carbon to the alloy-based active material is defined as X, and the proportion (wt %) of the second fibrous carbon to the alloy-based active material is defined as Y, the proportion ({Y/(X+Y)}×100%) of the contained second fibrous carbon to a total of the first fibrous carbon and the second fibrous carbon is 0.5% to 10%.Type: GrantFiled: February 16, 2022Date of Patent: May 14, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shohei Kawashima
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Patent number: 11912853Abstract: A binder composition includes a dispersion medium and a group of binder particles. The group of binder particles is dispersed in the dispersion medium. The group of binder particles include a polymer material. The polymer material includes a constitutional unit originated from vinylidene difluoride. The group of binder particles has a number-based particle size distribution. The particle size distribution satisfies the following conditions: “0.19?X?0.26”, “0.69?Y?0.76”, and “0?Z?0.05”. Here, “X” represents a frequency of particles each having a particle size of less than or equal to 40 ?m. “Y” indicates a frequency of particles each having a particle size of more than 40 ?m and less than or equal to 110 ?m. “Z” indicates a frequency of particles each having a particle size of more than 110 ?m and less than or equal to 250 ?m.Type: GrantFiled: June 4, 2021Date of Patent: February 27, 2024Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KUREHA CORPORATIONInventors: Naoki Osada, Shohei Kawashima, Ryosuke Furuya, Yoshiyuki Nagasawa, Mitsuyasu Sakuma
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Publication number: 20240021894Abstract: In a solid-state battery that includes a stack including a cathode layer, a solid electrolyte layer, and an anode layer, the proportion of voids in the anode layer in a stacking direction, in all voids in the anode layer is more than 36 vol %; or a method of producing a solid-state battery includes: performing initial charging in which a constraining pressure for the stack at the beginning of the charging is at least 30 MPa, and a constraining pressure for the stack at the end of the charging is at least 40 MPa.Type: ApplicationFiled: December 15, 2021Publication date: January 18, 2024Inventors: Shohei KAWASHIMA, Yusuke ITO
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Publication number: 20220344666Abstract: A main object of the present disclosure is to provide an all solid state battery in which occurrence of short circuit is inhibited. The present disclosure achieves the object by providing an all solid state battery including an anode including at least an anode current collector, a cathode, and a solid electrolyte layer arranged between the anode and the cathode; wherein a protective layer containing a Mg-containing particle that contains at least Mg, and also contains a polymer, is arranged between the anode current collector and the solid electrolyte layer; and a contacting area rate in an interface between the solid electrolyte layer and the protective layer is 50% or more.Type: ApplicationFiled: April 19, 2022Publication date: October 27, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ximeng Li, Masumi Sato, Sakina Kaneko, Tomoya Matsunaga, Mitsutoshi Otaki, Satoshi Wakasugi, Hideaki Nishimura, So Yubuchi, Shohei Kawashima, Jun Yoshida
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Publication number: 20220344791Abstract: A main object of the present disclosure is to provide an all solid state battery in which occurrence of short circuit is inhibited. The present disclosure achieves the object by providing an all solid state battery comprising an anode including at least an anode current collector, a cathode, and a solid electrolyte layer arranged between the anode and the cathode; wherein a protective layer containing a Mg-containing particle that contains at least Mg, and also containing a polymer, is arranged between the anode current collector and the solid electrolyte layer.Type: ApplicationFiled: April 20, 2022Publication date: October 27, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ximeng Li, Masumi Sato, Sakina Kaneko, Tomoya Matsunaga, Mitsutoshi Otaki, Satoshi Wakasugi, Hideaki Nishimura, So Yubuchi, Shohei Kawashima, Jun Yoshida
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Publication number: 20220344706Abstract: A main object of the present disclosure is to provide an all solid state battery in which occurrence of short circuit is inhibited. The present disclosure achieves the object by providing an all solid state battery comprising an anode including at least an anode current collector, a cathode, and a solid electrolyte layer arranged between the anode and the cathode; wherein a protective layer containing a Mg-containing particle that contains at least Mg, and also containing a polymer, is arranged between the anode current collector and the solid electrolyte layer; the solid electrolyte layer contains a solid electrolyte in a granular shape; and when X designates an average particle size D50 of the solid electrolyte and Y designates an average thickness of the solid electrolyte layer, X/Y is 0.0125 or more and 0.02 or less.Type: ApplicationFiled: April 20, 2022Publication date: October 27, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ximeng Li, Masumi Sato, Sakina Kaneko, Tomoya Matsunaga, So Yubuchi, Mitsutoshi Otaki, Hideaki Nishimura, Satoshi Wakasugi, Shohei Kawashima, Jun Yoshida
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Publication number: 20220320480Abstract: To improve the capacity of an all-solid-state battery, a method of manufacturing an all-solid-state battery having a cathode that contains sulfur include: performing initial charge and discharge separately at least in three cycles until a capacity of the battery reaches a design capacity, wherein a charge discharge capacity in a first cycle is at most 30% of the design capacity, and charge and discharge in a second cycle and after are performed, so that a charge discharge capacity in an n-th cycle is increased at least 1.15 times as much as a charge discharge capacity in an (n-1)-th cycle.Type: ApplicationFiled: March 21, 2022Publication date: October 6, 2022Inventors: Ximeng LI, Masumi SATO, Sakina KANEKO, Tomoya MATSUNAGA, Satoshi WAKASUGI, Hideaki NISHIMURA, Mitsutoshi OTAKI, So YUBUCHI, Shohei KAWASHIMA, Jun YOSHIDA
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Publication number: 20220293953Abstract: Provided is an all-solid-state battery capable of suppressing a rise in the resistance increase ratio thereof. The all-solid-state battery includes an anode active material layer containing an alloy-based active material, a first fibrous carbon, and a second fibrous carbon, wherein when a fiber diameter of the first fibrous carbon is defined as A, and a fiber diameter of the second fibrous carbon is defined as B, the ratio of A to B is 10 to 300, and when the proportion (wt %) of the first fibrous carbon to the alloy-based active material is defined as X, and the proportion (wt %) of the second fibrous carbon to the alloy-based active material is defined as Y, the proportion ({Y/(X+Y)}×100%) of the contained second fibrous carbon to a total of the first fibrous carbon and the second fibrous carbon is 0.5% to 10%.Type: ApplicationFiled: February 16, 2022Publication date: September 15, 2022Inventor: Shohei Kawashima
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Publication number: 20220113330Abstract: An automatic analyzer includes a cleaning pool, a discharge port, a waste fluid pipe, a valve, and a guiding unit. The cleaning pool is used to clean a predetermined member with a fluid. The discharge port discharges the fluid. The waste fluid pipe connects the cleaning pool and the discharge port. The valve is disposed to the waste fluid pipe. The guiding unit guides a cleaning fluid to the cleaning pool via the waste fluid pipe.Type: ApplicationFiled: October 6, 2021Publication date: April 14, 2022Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Takafumi FUJIWARA, Takashi YOSHIMURA, Takeshi KINPARA, Shohei KAWASHIMA, Tomoaki KURANO, Takahiro OMORI
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Publication number: 20210380791Abstract: A binder composition includes a dispersion medium and a group of binder particles. The group of binder particles is dispersed in the dispersion medium. The group of binder particles include a polymer material. The polymer material includes a constitutional unit originated from vinylidene difluoride. The group of binder particles has a number-based particle size distribution. The particle size distribution satisfies the following conditions: “0.19?X?0.26”, “0.69?Y?0.76”, and “0?Z?0.05”. Here, “X” represents a frequency of particles each having a particle size of less than or equal to 40 ?m. “Y” indicates a frequency of particles each having a particle size of more than 40 ?m and less than or equal to 110 ?m. “Z” indicates a frequency of particles each having a particle size of more than 110 ?m and less than or equal to 250 ?m.Type: ApplicationFiled: June 4, 2021Publication date: December 9, 2021Inventors: Naoki OSADA, Shohei KAWASHIMA, Ryosuke FURUYA, Yoshiyuki NAGASAWA, Mitsuyasu SAKUMA