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1.发明公开公开(公告)号：US20230207904A1
公开(公告)日：2023-06-29
申请号：US17975648
申请日：2022-10-28
IPC分类号： H01M10/44 , H01M10/0525 , H02J7/00
CPC分类号： H01M10/44 , H01M10/0525 , H02J7/0048
摘要： A recovery processing method of a lithium ion battery of an embodiment is a processing method of recovering performance of the lithium ion battery. The recovery processing method of the lithium ion battery includes a process of holding an SOC of the lithium ion battery at a fixed value that is within a range of 10% to 70%. The SOC in the process is preferably set to equal to or smaller than a value in which a gradient of an SOC-voltage curve has a minimum value.
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公开(公告)号：US20240332606A1
公开(公告)日：2024-10-03
申请号：US18591109
申请日：2024-02-29
IPC分类号： H01M10/0562 , H01M10/058
CPC分类号： H01M10/0562 , H01M10/058 , H01M2300/0068 , H01M2300/0094
摘要： The method for producing a solid electrolyte sheet according to the present invention comprises: a first step of applying a first slurry containing a solid electrolyte to a substrate to form a first uncured product; a second step of drying the first uncured product on the substrate to form a first solid electrolyte layer; a third step of applying a second slurry to an upper surface of the first solid electrolyte layer to form a second uncured product; a fourth step of digging a sheet-formed three-dimensional structure into the second uncured product; and a fifth step of drying the second uncured product that has entered inside the three-dimensional structure and the second uncured product that is present on the three-dimensional structure to form a second solid electrolyte layer inside and on the three-dimensional structure, thereby obtaining a solid electrolyte sheet with the second solid electrolyte layer filling inside of the three-dimensional structure.
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公开(公告)号：US11796603B2
公开(公告)日：2023-10-24
申请号：US17677046
申请日：2022-02-22
发明人： Seiichi Koketsu , Shunsuke Konishi
IPC分类号： G01R31/392 , G01R31/396 , H01M10/48 , H01M10/0525
CPC分类号： G01R31/392 , G01R31/396 , H01M10/48 , H01M10/0525
摘要： In a method of estimating an internal degradation state of a degraded cell, a measurement system calculates a target capacity characteristic curve by differentiating current capacity by voltage on a target charge curve of a target battery. Further, the method obtains changes of parameters of different types based on a fitting operation that fits the curve and a reference capacity characteristic curve calculated from reference data. In the fitting operation, whichever of low current capacity regions and high current capacity regions of the curve and the curve have a stronger correlation are fit first and whichever of them have a weaker correlation are fit later.
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公开(公告)号：US20230216060A1
公开(公告)日：2023-07-06
申请号：US18089623
申请日：2022-12-28
IPC分类号： H01M4/62 , H01M4/40 , H01M10/0525 , H01M4/04
CPC分类号： H01M4/628 , H01M4/0404 , H01M4/405 , H01M10/0525 , H01M2004/028
摘要： What are provided are a positive electrode for a lithium-ion battery capable of suppressing the generation of carbon dioxide while increasing the battery capacity of the lithium-ion battery, a lithium-ion battery and a method for producing a positive electrode for a lithium-ion battery. A positive electrode for a lithium-ion battery having a positive electrode current collector and a positive electrode active material layer, in which the positive electrode active material layer has a positive electrode mixture containing the positive electrode active material, and the positive electrode mixture contains lithium carbonate in a range of 9% by mass or more and 20% by mass or less with respect of the total weight thereof.
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5.发明公开公开(公告)号：US20230208172A1
公开(公告)日：2023-06-29
申请号：US17971673
申请日：2022-10-24
IPC分类号： H02J7/00
CPC分类号： H02J7/0069 , H02J7/0048 , H02J7/007184
摘要： A recovery processing method of a lithium ion battery having a positive electrode and a negative electrode and in which performance has decreased due to a residue of lithium ions in the negative electrode, the method comprises: repeating a cycle a plurality of times, the cycle including: a first process of setting an SOC of the lithium ion battery to a first value, that is equal to or smaller than a value of the SOC in which a gradient of an SOC-voltage curve is a minimum value and that is equal to or greater than the value of the SOC in which the gradient of the SOC-voltage curve is two times the minimum value, by charging; and a second process of setting the SOC of the lithium ion battery to a second value, that is smaller than the first value, by discharging.
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6.发明公开公开(公告)号：US20230207903A1
公开(公告)日：2023-06-29
申请号：US17971678
申请日：2022-10-24
IPC分类号： H01M10/44 , H01M10/0525
CPC分类号： H01M10/44 , H01M10/0525
摘要： A recovery processing method of a lithium ion battery includes repeating a cycle a plurality of times, and the cycle includes a first process of setting an SOC of the lithium ion battery to a first value that is equal to or less than a value of the SOC where a gradient of an SOC-voltage curve is a minimum value through charging, and a second process of setting the SOC of the lithium ion battery to a second value smaller than the first value through discharging.
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