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1.发明公开公开(公告)号：US20240332639A1
公开(公告)日：2024-10-03
申请号：US18441521
申请日：2024-02-14
发明人： Wataru UNO , Hayato SEKI , Yasuyuki HOTTA , Keigo HOSHINA
IPC分类号： H01M10/42 , B60L3/00 , B60L50/64 , H01M4/02 , H01M50/209 , H01M50/296 , H01M50/509 , H01M50/574
CPC分类号： H01M10/4235 , B60L3/0046 , B60L50/64 , H01M50/209 , H01M50/296 , H01M50/509 , H01M50/574 , H01M2004/021 , H01M2004/028 , H01M2220/20
摘要： An electrode structure for a secondary battery includes an electrode and a composite layer. In a cumulative frequency distribution of inorganic particles having average particle size of 3 μm or more with respect to a thickness direction of the composite layer, a first region is set to a range 0 or more and less than 25 and the second region is set to a range 25 or more and 100 or less. The first region is 5% or more and 40% or less of the thickness of the composite layer. Average particle size of inorganic particles satisfy a relationship of R1
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2.发明公开公开(公告)号：US20240097206A1
公开(公告)日：2024-03-21
申请号：US18240500
申请日：2023-08-31
发明人： Hirofumi YASUMIISHI , Keigo HOSHINA , Yasuyuki HOTTA , Yumiko SEKIGUCHI , Kazuomi YOSHIMA , Hayato SEKI , Wataru UNO
IPC分类号： H01M10/38 , H01M4/485 , H01M4/505 , H01M4/62 , H01M50/414 , H01M50/431 , H01M50/443 , H01M50/446 , H01M50/46
CPC分类号： H01M10/38 , H01M4/485 , H01M4/505 , H01M4/622 , H01M50/414 , H01M50/431 , H01M50/443 , H01M50/446 , H01M50/46 , H01M2004/027
摘要： An integrated sheet structure for a secondary battery, including a first mixture layer containing a first active material and a first binder, a second mixture layer containing a second active material and a second binder, and a third mixture layer located between the first mixture layer and the second mixture layer and containing solid particles and a third binder, in which the first mixture layer and the third mixture layer are bonded each other, and the second mixture layer and the third mixture layer are bonded each other.
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3.发明公开公开(公告)号：US20230400526A1
公开(公告)日：2023-12-14
申请号：US18451330
申请日：2023-08-17
发明人： Yuta KANAI , Ryosuke YAGI , Wataru UNO , Norihiro YOSHINAGA
IPC分类号： G01R31/389 , H02J7/00
CPC分类号： G01R31/389 , H02J7/0047
摘要： In a diagnosis method of an embodiment, a battery, which includes, as electrode active materials, a first electrode active material whose impedance has a first natural frequency and a second natural frequency lower than the first natural frequency and a second electrode active material whose impedance has a third natural frequency with a magnitude between the first natural frequency and the second natural frequency, is diagnosed. In the method, an impedance of the battery is measured at each of a plurality of measurement target frequencies by setting, as a measurement range, a first measurement range including the first natural frequency and not including the second and third natural frequencies, and a second measurement range including the second natural frequency and not including the first and third natural frequencies.
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公开(公告)号：US20240079575A1
公开(公告)日：2024-03-07
申请号：US18172881
申请日：2023-02-22
发明人： Yumiko SEKIGUCHI , Keigo HOSHINA , Kazuomi YOSHIMA , Yasuyuki HOTTA , Hayato SEKI , Hirofumi YASUMIISHI , Wataru UNO
IPC分类号： H01M4/485 , H01M10/0525 , H01M50/446
CPC分类号： H01M4/485 , H01M10/0525 , H01M50/446 , H01M2004/021 , H01M2220/20
摘要： Provided is a secondary battery including a negative electrode, a positive electrode, a separation layer in contact with an active material-containing layer of the negative electrode, and an aqueous electrolyte. A first concentration corresponding to a first metal concentration represented by Equation 1 (first metal concentration=atomic concentration of Hg, Pb, Zn, and/or Bi/sum of atomic concentrations of elements B to U in periodic table, excluding carbon and oxygen) in a boundary region between the active material-containing layer and the separation layer is 2% or more and 8.2% or less. A ratio of the first concentration to a second concentration corresponding to the first metal concentration represented by Equation 1 in the active material-containing layer excluding the boundary region is 2.5 or more and less than 4.
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5.发明公开公开(公告)号：US20240012060A1
公开(公告)日：2024-01-11
申请号：US18170579
申请日：2023-02-17
发明人： Wataru UNO , Yuta KANAI , Ryosuke YAGI
IPC分类号： G01R31/389 , G01R31/392 , G01R31/3842
CPC分类号： G01R31/389 , G01R31/392 , G01R31/3842
摘要： In a diagnosis method of a battery of an embodiment, based on a measurement result of a first impedance of a battery at a first frequency, it is determined, for each of a plurality of SOC values, whether an absolute value of a change ratio of the first impedance to the SOC is not more than a reference value. In the diagnosis method, for a target SOC value whose absolute value of the change ratio is not more than the reference value in the plurality of SOC values, a second impedance of the battery at a second frequency higher than the first frequency is measured. In the diagnosis method, determination concerning the state of the battery is performed based on the measurement results of the first impedance and the second impedance for the target SOC value.
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6.发明申请公开(公告)号：US20210091358A1
公开(公告)日：2021-03-25
申请号：US16883331
申请日：2020-05-26
发明人： Wataru UNO , Yasuyuki HOTTA , Shinsuke MATSUNO , Norio TAKAMI
IPC分类号： H01M2/16
摘要： A separator includes an inorganic particle layer including an inorganic particle, a polymeric binder and a fiber substance. A mass ratio of the fiber substance with respect to a total mass of the inorganic particle, the polymeric binder and the fiber substance is 0.1 mass % or more and 40 mass % or less.
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7.发明公开公开(公告)号：US20240006905A1
公开(公告)日：2024-01-04
申请号：US18166607
申请日：2023-02-09
发明人： Yuta KANAI , Ryosuke YAGI , Wataru UNO
IPC分类号： H02J7/00 , G01R31/389 , G01R31/392
CPC分类号： H02J7/00712 , G01R31/389 , H02J7/005 , G01R31/392
摘要： In a charging method of a battery of an embodiment, at each of a first time point and a second time point after a time point at which a predetermined time is elapsed from the first time point, a superimposed current obtained by superimposing a current waveform that periodically changes at a predetermined frequency on a charging current is input to the battery, thereby measuring, concerning an impedance of the battery at the predetermined frequency, a first impedance at the first time point and a second impedance at the second time point. In the charging method, using a parameter representing an increase state of the second impedance to the first impedance as an index, a current value of the charging current is adjusted.
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公开(公告)号：US20230366939A1
公开(公告)日：2023-11-16
申请号：US18359929
申请日：2023-07-27
发明人： Wataru UNO , Yuta KANAI , Ryosuke YAGI
IPC分类号： G01R31/367 , H01M10/42 , G01R31/36 , G01R31/389 , G01R31/3842
CPC分类号： G01R31/367 , H01M10/425 , G01R31/3648 , G01R31/389 , G01R31/3842 , H01M2010/4271
摘要： In an embodiment, a diagnosis method of a secondary battery, which includes a first electrode including a first electrode active material that performs a two-phase coexistence reaction, and a second electrode including a second active material that performs a single-phase reaction and having a polarity opposite to a polarity of the first electrode, is provided. In the method, a relationship between an SOC of the secondary battery and at least one of a charge transfer resistance and a vertex frequency of the second electrode is acquired by calculating at least one of the charge transfer resistance and the vertex frequency of the second electrode based on a measurement result of an impedance of the secondary battery for each of a plurality of SOC values of the secondary battery.
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9.发明申请公开(公告)号：US20220069336A1
公开(公告)日：2022-03-03
申请号：US17180685
申请日：2021-02-19
发明人： Hayato SEKI , Yasuyuki HOTTA , Wataru UNO , Shinsuke MATSUNO
摘要： According to one embodiment, an electrode structure is provided. The electrode structure includes an electrode group and a hold member. The hold member clamps the electrode group in a thickness direction of the electrode group. The electrode group satisfies a formula (1) below. m/L≤0.01 (1) Here, m is a difference Δt in a cross section which is selected from among a plurality of cross sections along the thickness direction of the electrode group. L is a maximum length of the electrode group in an in-plane direction orthogonal to the thickness direction.
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公开(公告)号：US20210091416A1
公开(公告)日：2021-03-25
申请号：US16897665
申请日：2020-06-10
发明人： Hayato SEKI , Wataru UNO , Yasuyuki HOTTA , Shinsuke MATSUNO
摘要： A secondary battery includes a positive electrode, a first aqueous electrolyte held on the positive electrode, a negative electrode, a second aqueous electrolyte held on the negative electrode, and a separator interposed between the positive electrode and the negative electrode. A difference between an osmotic pressure (N/m2) of the first aqueous electrolyte and an osmotic pressure (N/m2) of the second aqueous electrolyte is 90% or less (including 0%) of the higher one of the osmotic pressure of the first aqueous electrolyte and the osmotic pressure of the second aqueous electrolyte.
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