Patents by Inventor Hiromitsu MISHIMA
Hiromitsu MISHIMA 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: 11961990Abstract: Embodiments described in this application relate generally to a system, an apparatus and/or methods for manufacturing electrodes by infusion electrolyte into compacted electrode materials. In some embodiments, a working electrode materials can be produced using an infusion mixing and manufacturing process. In some embodiments, a single-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. In some embodiments, a double-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. The electrodes produced by an infusion mixing and manufacturing process generally perform better than those produced by non-infusion processes.Type: GrantFiled: April 12, 2021Date of Patent: April 16, 2024Assignees: 24M Technologies, Inc., Kyocera CorporationInventors: Naoki Ota, Takaaki Fukushima, Yutaka Wakai, Motoi Tamaki, Sean Simon, Nicholas Varamo, Duy Le, Taison Tan, Hiromitsu Mishima
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Publication number: 20230411713Abstract: A power storage apparatus includes a power storage module, a temperature acquirer, a state-of-charge calculator, and a charge controller. The power storage module includes a plurality of batteries connected to each other. The temperature acquirer acquires a temperature of the power storage module. The state-of-charge calculator calculates a state of charge of the power storage module. The charge controller charges the power storage module with a current value that is set based on the acquired temperature and the calculated state of charge.Type: ApplicationFiled: October 26, 2021Publication date: December 21, 2023Inventors: Tsuyoshi KUBOTANI, Takaaki FUKUSHIMA, Yuya ISHIDA, Yuki ODA, Masanobu SATO, Masahiro BABA, Hiromitsu MISHIMA
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Patent number: 11804595Abstract: Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and/or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.Type: GrantFiled: October 16, 2019Date of Patent: October 31, 2023Assignees: 24M Technologies, Inc., Kyocera CorporationInventors: Naoki Ota, Mihai Duduta, Takaaki Fukushima, Hiuling Zoe Yu, Taison Tan, Hiromitsu Mishima
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Publication number: 20230006451Abstract: An electricity storage device includes a plurality of cell batteries C1 to CM serially connected; and a management module including a balance circuit that can selectively cause electricity to be discharged from each of the plurality of cell batteries, and a controller. The controller includes a current-voltage acquiring unit that acquires a charging current and the respective voltages of the plurality of cell batteries and a balance control unit that, if a determination condition and an execution condition are satisfied, determines a lowest-voltage cell battery having a lowest voltage among the plurality of cell batteries and controls the balance circuit such that electricity is discharged from the plurality of cell batteries other than the lowest-voltage cell battery for time periods in accordance with differences between the lowest voltage and the respective voltages of the cell batteries when the determination condition and the execution condition are satisfied.Type: ApplicationFiled: December 1, 2020Publication date: January 5, 2023Inventors: Tsuyoshi KUBOTANI, Masanobu SATO, Yuki ODA, Masahiro BABA, Hiromitsu MISHIMA
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Publication number: 20220390523Abstract: A storage battery management device includes a control unit. The control unit obtains a current value of a current flowing through a storage battery, a temperature of the storage battery, and a charging rate of the storage battery during a target period. The control unit determines an operation mode of the storage battery during the target period on the basis of the current value and the charging rate. The control unit estimates a degree of degradation of the storage battery during the target period on the basis of the operation mode and the temperature.Type: ApplicationFiled: October 27, 2020Publication date: December 8, 2022Inventors: Tsuyoshi KUBOTANI, Yuki ODA, Hiromitsu MISHIMA, Masahiro BABA
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Publication number: 20220077445Abstract: Embodiments described in this application relate generally to a system, an apparatus and/or methods for manufacturing electrodes by infusion electrolyte into compacted electrode materials. In some embodiments, a working electrode materials can be produced using an infusion mixing and manufacturing process. In some embodiments, a single-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. In some embodiments, a double-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. The electrodes produced by an infusion mixing and manufacturing process generally perform better than those produced by non-infusion processes.Type: ApplicationFiled: April 12, 2021Publication date: March 10, 2022Inventors: Naoki OTA, Takaaki FUKUSHIMA, Yutaka WAKAI, Motoi TAMAKI, Sean SIMON, Nicholas VARAMO, Duy LE, Taison TAN, Hiromitsu MISHIMA
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Patent number: 11005087Abstract: Embodiments described in this application relate generally to a system, an apparatus and/or methods for manufacturing electrodes by infusion electrolyte into compacted electrode materials. In some embodiments, a working electrode materials can be produced using an infusion mixing and manufacturing process. In some embodiments, a single-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. In some embodiments, a double-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. The electrodes produced by an infusion mixing and manufacturing process generally perform better than those produced by non-infusion processes.Type: GrantFiled: January 17, 2017Date of Patent: May 11, 2021Assignees: 24M Technologies, Inc., Kyocera CorporationInventors: Naoki Ota, Takaaki Fukushima, Yutaka Wakai, Motoi Tamaki, Sean Simon, Nicholas Varamo, Duy Le, Taison Tan, Hiromitsu Mishima
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Publication number: 20200106094Abstract: Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and/or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.Type: ApplicationFiled: October 16, 2019Publication date: April 2, 2020Inventors: Naoki OTA, Mihai DUDUTA, Takaaki FUKUSHIMA, Hiuling Zoe YU, Taison TAN, Hiromitsu MISHIMA
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Patent number: 10497935Abstract: Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and/or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.Type: GrantFiled: November 3, 2015Date of Patent: December 3, 2019Assignees: 24M Technologies, Inc., Kyocera CorporationInventors: Naoki Ota, Mihai Duduta, Takaaki Fukushima, Hiuling Zoe Yu, Taison Tan, Hiromitsu Mishima
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Patent number: 10115970Abstract: A semi-solid electrode includes a first porous substrate and a second porous substrate stacked together to form a current collector, and a semi-solid electrode material embedded in the current collector. The semi-solid electrode material includes a suspension of an active material and a conductive material disposed in a non-aqueous liquid electrolyte. The porous substrates are at least partially disposed within the suspension such that the suspension substantially encapsulates the porous substrates. Each porous substrate in the current collector defines a pitch, and the two pitches of the two porous substrates in the current collector can be shifted with respect to each other by 30% to 70% of the pitch so as to reduce polarization effect.Type: GrantFiled: April 13, 2016Date of Patent: October 30, 2018Assignee: 24M Technologies, Inc.Inventors: Naoki Ota, Taison Tan, Takaaki Fukushima, Naoaki Yamaguchi, Hiromitsu Mishima
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Publication number: 20170214034Abstract: Embodiments described in this application relate generally to a system, an apparatus and/or methods for manufacturing electrodes by infusion electrolyte into compacted electrode materials. In some embodiments, a working electrode materials can be produced using an infusion mixing and manufacturing process. In some embodiments, a single-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. In some embodiments, a double-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. The electrodes produced by an infusion mixing and manufacturing process generally perform better than those produced by non-infusion processes.Type: ApplicationFiled: January 17, 2017Publication date: July 27, 2017Inventors: Naoki Ota, Takaaki Fukushima, Yutaka Wakai, Motoi Tamaki, Sean Simon, Nicholas Varamo, Duy Le, Taison Tan, Hiromitsu Mishima
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Publication number: 20160126543Abstract: Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and/or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.Type: ApplicationFiled: November 3, 2015Publication date: May 5, 2016Inventors: Naoki OTA, Mihai DUDUTA, Takaaki FUKUSHIMA, Hiuling Zoe YU, Taison TAN, Hiromitsu MISHIMA