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公开(公告)号：US10882013B2
公开(公告)日：2021-01-05
申请号：US16137905
申请日：2018-09-21
发明人： Naohisa Akiyama
IPC分类号： B01F3/12 , B01F7/04 , B01F7/00 , B01F7/16 , B01J2/10 , B02C18/14 , H01M4/62 , H01M4/04 , H01M4/133 , H01M4/1393 , H01M10/0525 , H01M4/587
摘要： A dry stirrer configured to stir powder in a dry state, and a wet stirrer provided downward of the dry stirrer in the vertical direction and configured to stir the powder are used. In the wet stirrer, the powder is stirred together with a fluid component, so that granules are formed. The wet stirrer includes a stirring chamber having a cylindrical shape and having a central axis placed in the lateral direction, a cut blade configured to rotate around the central axis of the cylindrical shape in the stirring chamber, and an agitating blade configured to rotate along an inner wall that is a cylindrical side face inside the stirring chamber. When the agitating blade passes above the central axis of the stirring chamber in the vertical direction, the agitating blade is rocked.
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公开(公告)号：US10135060B2
公开(公告)日：2018-11-20
申请号：US15209011
申请日：2016-07-13
IPC分类号： H01M4/04 , H01M4/136 , H01M4/58 , H01M10/0525 , H01M10/0585 , H01M4/62 , H01M10/058
摘要： A method of manufacturing a nonaqueous electrolyte secondary battery includes a positive electrode paste preparation step, a positive electrode sheet preparation step, a construction step, and an initial charging step. In the positive electrode paste preparation step, a positive electrode paste is prepared by dispersing a positive electrode active material, a binder, and a metal phosphate in a solvent. The metal phosphate includes a first metal phosphate and a second metal phosphate having an average particle size which is more than that of the particles of the first metal phosphate by 1.3 μm or more.
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公开(公告)号：US10236530B2
公开(公告)日：2019-03-19
申请号：US15341447
申请日：2016-11-02
IPC分类号： H01M2/00 , H01M10/0525 , H01M4/36 , H01M4/505 , H01M4/62 , H01M10/44 , H01M4/131 , H01M4/1391 , H01M10/42 , H01M4/02
摘要： A method of manufacturing a nonaqueous electrolyte secondary battery includes: manufacturing a positive electrode sheet by forming a positive electrode active material layer, which includes trilithium phosphate, on a positive electrode current collector foil; accommodating the positive electrode sheet, a negative electrode sheet, and an electrolytic solution in a battery case; and charging a battery after the accommodation. During the manufacturing of the positive electrode sheet, a positive electrode active material is a composite oxide including at least lithium and manganese. During the manufacturing of the positive electrode sheet, a conductive additive is obtained by attaching at least one of manganese or manganese oxide to a surface of a carbon material.
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公开(公告)号：US10186708B2
公开(公告)日：2019-01-22
申请号：US15280360
申请日：2016-09-29
IPC分类号： H01M4/62 , H01M4/505 , H01M4/525 , H01M4/1391 , H01M10/0568 , H01M10/0569 , H01M4/04 , H01M4/131 , H01M10/0525 , H01M10/44
摘要： A method of manufacturing a nonaqueous electrolyte secondary battery includes: a first step of preparing a positive electrode mixture paste; and a second step of preparing a positive electrode. In the first step, at least one binder including an acidic binder in an amount set such that a pH value of an aqueous solution obtained by dissolving the set amount of acidic binder in the same amount of water as that of the solvent is within a range of 1.7 to 5.5 is used.
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公开(公告)号：US11183687B2
公开(公告)日：2021-11-23
申请号：US16139469
申请日：2018-09-24
发明人： Naohisa Akiyama
摘要： A method of producing an electrode plate includes forming a particle aggregate, forming an undried active material layer, and drying the undried active material layer. When the particle aggregate is formed, conductive particles include first conductive particles which have a three-dimensional structure in which primary particles with an average primary particle size of 30 nm to 80 nm are connected to each other and have an average structure length of 260 nm to 500 nm and second conductive particles which have a three-dimensional structure in which primary particles with an average primary particle size of 8 nm to 13 nm are connected to each other and have an average structure length of 80 nm to 250 nm.
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公开(公告)号：US10987641B2
公开(公告)日：2021-04-27
申请号：US16110492
申请日：2018-08-23
发明人： Naohisa Akiyama
摘要： A manufacturing method for a granulated body includes supplying powder agitated by a dry agitator to a wet agitator, and agitating the powder supplied from the dry agitator with a liquid component in the wet agitator by rotating blades that have inclined surfaces, so as to form a granulated body. The blades are rotated when the powder is supplied to the wet agitator from the dry agitator. The dry agitator agitates the powder in a dry state, and the wet agitator is positioned below the dry agitator. The wet agitator includes an agitation chamber and the blades rotating around a center axis orthogonal to a direction in which the powder is supplied.
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公开(公告)号：US10897036B2
公开(公告)日：2021-01-19
申请号：US15808129
申请日：2017-11-09
发明人： Naohisa Akiyama
IPC分类号： H01M4/04 , B01F15/00 , B01F3/12 , B01F7/00 , B01F7/16 , C23C14/58 , H01M2/36 , H01M4/36 , H01M10/04
摘要： A method of producing a granular aggregate in which wet granulated substances including active material particles, conductive material particles, a binding agent for binding the active material particles and the conductive material particles, and a solvent are aggregated includes adding a binding agent solution in which the binding agent is dissolved in the solvent to the active material particles having a solvent absorbing property, mixing the binding agent solution and the active material particles such that a primary granular aggregate in which granulated primary granulated substances are aggregated is produced, and mixing the conductive material particles into the primary granular aggregate and producing a granulated granular aggregate.
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