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公开(公告)号:US20240351474A1
公开(公告)日:2024-10-24
申请号:US18413263
申请日:2024-01-16
发明人: Mitsutoshi OTAKI , Shinji Nakanishi , Tetsuya Waseda , Jun Yoshida , Tsubasa Migita , Yoshihiro Uchida
CPC分类号: B60L58/22 , B60L53/62 , H01M10/46 , H02J7/0014 , H02J7/0048 , H02J7/00712
摘要: An all-solid-state battery system includes an assembled battery configured by connecting a plurality of cells, and a control device that performs charge control and discharge control of the assembled battery. Each of the plurality of cells is an all-solid-state battery. The control device is configured to perform an equalization process of evenly approximating the amount of stored electricity between the cells in the plateau region in the relationship between the voltage and the amount of stored electricity of the assembled battery in the charge control or the discharge control of the assembled battery.
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2.
公开(公告)号:US20240343590A1
公开(公告)日:2024-10-17
申请号:US18581783
申请日:2024-02-20
IPC分类号: C01B33/021 , H01M4/02 , H01M4/38 , H01M10/0525
CPC分类号: C01B33/021 , H01M4/386 , H01M10/0525 , C01P2002/08 , C01P2002/30 , C01P2004/82 , H01M2004/021 , H01M2004/027
摘要: The present disclosure provides a method for manufacturing a silicon clathrate active material having a small expansion and a method for manufacturing a lithium ion battery including manufacturing such a silicon clathrate active material. The method of the present disclosure for manufacturing a silicon clathrate active material comprises oxidizing a surface of a sodium-containing silicon clathrate at least partially, and washing the oxidized sodium-containing silicon clathrate with an acid. The method of the present disclosure for manufacturing a lithium ion battery comprises manufacturing a silicon clathrate active material by the method of the present disclosure, and forming a negative electrode active material layer using the silicon clathrate active material.
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公开(公告)号:US20240014377A1
公开(公告)日:2024-01-11
申请号:US18372451
申请日:2023-09-25
发明人: Mitsutoshi OTAKI , Jun YOSHIDA
IPC分类号: H01M4/134 , H01M10/0562 , H01M10/0585
CPC分类号: H01M4/134 , H01M10/0562 , H01M10/0585 , H01M2004/021
摘要: A main object of the present disclosure is to provide a car having an all solid state battery with excellent capacity durability when restraining pressure is not applied or even when low restraining pressure is applied thereto. The present disclosure achieves the object by providing an all solid state battery comprising layers in the order of a cathode layer, a solid electrolyte layer, and an anode layer; wherein the anode layer contains an anode active material including a silicon clathrate II type crystal phase; restraining pressure of 0 MPa or more and less than 5 MPa is applied to the all solid state battery in a layering direction; and a specific surface area of the anode active material is 8 m2/g or more and 17 m2/g or less.
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公开(公告)号:US20210391576A1
公开(公告)日:2021-12-16
申请号:US17210746
申请日:2021-03-24
摘要: A main object of the present disclosure is to provide an active material wherein a volume variation due to charge/discharge is small. The present disclosure achieves the object by providing an active material comprising a silicon clathrate II type crystal phase, and having a composition represented by NaxSi136, wherein 1.98
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公开(公告)号:US20180323631A1
公开(公告)日:2018-11-08
申请号:US16036256
申请日:2018-07-16
发明人: Mitsutoshi OTAKI , Keisuke OMORI , Norihiro OSE , Hajime HASEGAWA , Kengo HAGA
IPC分类号: H02J7/00 , H01M10/44 , H01M10/42 , H01M10/0585 , H01M10/0562 , H01M10/052 , H01M4/62
CPC分类号: H02J7/0068 , H01M4/131 , H01M4/134 , H01M4/1391 , H01M4/366 , H01M4/386 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/0525 , H01M10/0562 , H01M10/058 , H01M10/0585 , H01M10/425 , H01M10/44 , H01M10/446 , H01M2004/027 , H01M2004/028
摘要: An all-solid-state battery system comprising an all-solid-state battery comprising a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer, and a control device configured to control a charge-discharge voltage during use of the all-solid-state battery. The negative electrode active material layer includes alloy negative electrode active material particles. The amorphization degree of the alloy negative electrode active material particles is in the range of 27.8% to 82.8% and a ratio Z/W is in the range of 0.32 to 0.60, where Z is a controlled discharge capacity of the all-solid-state battery, and W is a theoretical capacity of the alloy negative electrode active material particles×a total weight of the alloy negative electrode active material particles×the amorphization degree.
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6.
公开(公告)号:US20170077732A1
公开(公告)日:2017-03-16
申请号:US15265372
申请日:2016-09-14
发明人: Mitsutoshi OTAKI , Keisuke OMORI , Norihiro OSE , Hajime HASEGAWA , Kengo HAGA
IPC分类号: H02J7/00 , H01M10/44 , H01M10/058 , H01M4/38 , H01M4/131 , H01M4/134 , H01M10/0525 , H01M4/485
CPC分类号: H02J7/0068 , H01M4/131 , H01M4/134 , H01M4/1391 , H01M4/366 , H01M4/386 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/0525 , H01M10/0562 , H01M10/058 , H01M10/0585 , H01M10/425 , H01M10/44 , H01M10/446 , H01M2004/027 , H01M2004/028
摘要: An all-solid-state battery system comprising an all-solid-state battery comprising a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer, and a control device configured to control a charge-discharge voltage during use of the all-solid-state battery. The negative electrode active material layer includes alloy negative electrode active material particles. The amorphization degree of the alloy negative electrode active material particles is in the range of 27.8% to 82.8% and a ratio Z/W is in the range of 0.32 to 0.60, where Z is a controlled discharge capacity of the all-solid-state battery, and W is a theoretical capacity of the alloy negative electrode active material particles×a total weight of the alloy negative electrode active material particles×the amorphization degree.
摘要翻译: 一种全固态电池系统,包括具有正极活性物质层,固体电解质层和负极活性物质层的全固态电池,以及控制装置,其被配置为控制充放电电压 使用全固态电池。 负极活性物质层包括合金负极活性物质粒子。 合金负极活性物质粒子的非晶化度在27.8%〜82.8%的范围内,Z / W在0.32〜0.60的范围内,Z为全固态的受控放电容量 电池,W是合金负极活性物质粒子的理论容量×合金负极活性物质粒子的总重量×非晶化度。
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公开(公告)号:US20220320580A1
公开(公告)日:2022-10-06
申请号:US17655859
申请日:2022-03-22
发明人: Hideaki NISHIMURA , Jun YOSHIDA , Mitsutoshi OTAKI , Satoshi WAKASUGI , Shoshei KAWASHIMA , So YUBUCHI
IPC分类号: H01M10/0562 , H01M4/58
摘要: To reduce an electric resistance of an all-solid-state battery, the all-solid-state battery includes: an anode active material layer; a cathode active material layer; and a solid electrolyte layer disposed between the anode active material layer and the cathode active material layer, wherein the cathode active material layer contains S, Li2S, P2S5, and a single-walled carbon nanotube.
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公开(公告)号:US20220320480A1
公开(公告)日:2022-10-06
申请号:US17655753
申请日:2022-03-21
发明人: Ximeng LI , Masumi SATO , Sakina KANEKO , Tomoya MATSUNAGA , Satoshi WAKASUGI , Hideaki NISHIMURA , Mitsutoshi OTAKI , So YUBUCHI , Shohei KAWASHIMA , Jun YOSHIDA
IPC分类号: H01M4/04 , H01M4/38 , H01M10/44 , H01M10/052 , H01M10/0585
摘要: 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.
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公开(公告)号:US20220190329A1
公开(公告)日:2022-06-16
申请号:US17532704
申请日:2021-11-22
发明人: Mitsutoshi OTAKI , Jun YOSHIDA
IPC分类号: H01M4/38 , H01M10/0525 , H01M10/0585
摘要: A main object of the present disclosure is to provide an all solid state battery with excellent capacity durability when restraining pressure is not applied or even when low restraining pressure is applied thereto. The present disclosure achieves the object by providing an all solid state battery comprising layers in the order of a cathode layer, a solid electrolyte layer, and an anode layer; wherein the anode layer contains an anode active material including a silicon clathrate II type crystal phase; restraining pressure of 0 MPa or more and less than 5 MPa is applied to the all solid state battery in a layering direction; and when a capacity ratio of anode capacity with respect to cathode capacity is regarded as A, the capacity ratio A is 2.5 or more and 4.8 or less.
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公开(公告)号:US20210300768A1
公开(公告)日:2021-09-30
申请号:US17201788
申请日:2021-03-15
发明人: Jun YOSHIDA , Kazuhiro SUZUKI , Mitsutoshi OTAKI
IPC分类号: C01B33/021
摘要: A method produces a Si-based active material containing a Si-based clathrate compound decreasing a Na element content while maintaining a crystal phase of type II clathrate. The method that produces a Si-based active material containing a Si-based clathrate compound having a crystal phase of type II clathrate, includes: preparing the Si-based clathrate compound by heating an alloy containing a Na element and a Si element at a temperature of 340° C. or more and less than 400° C. (a first heating step), heating the Si-based clathrate compound at a temperature of 340° C. or more and less than 470° C. after the first heating step (a second heating step), cooling the Si-based clathrate compound to a temperature of less than 340° C. after the second heating step (a cooling step), and heating the Si-based clathrate compound at a temperature of 340° C. or more and less than 470° C. after the cooling step (a third heating step).
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