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公开(公告)号：US11626593B2
公开(公告)日：2023-04-11
申请号：US17124589
申请日：2020-12-17
发明人： Naoto Onodera , Katsunori Yanagida , Yo Kato
IPC分类号： H01M4/133 , H01M4/583 , H01M4/66 , H01M4/36 , H01M4/38 , H01M4/62 , H01M10/0525 , H01M4/134 , H01M4/02
摘要： This negative electrode comprises an electrode current collector, and an electrode mixture layer provided on a surface of the electrode current collector. When, with respect to the thickness direction of the electrode mixture layer, a range from the surface on the side of the electrode current collector to 40% of the thickness of the electrode mixture layer is defined as a first region, and a range from the surface on the side opposite to the electrode current collector to 40% of the thickness of the electrode mixture layer is defined as a second region, the first region and the second region have different volume change ratio upon charge and discharge, and the region having the larger volume change ratio upon charge and discharge has a higher content of a solid inorganic filler and a lower content of a hollow inorganic filler than the region having the smaller volume change ratio.
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公开(公告)号：US20220271284A1
公开(公告)日：2022-08-25
申请号：US17630362
申请日：2020-07-21
发明人： Shinya Suzuki , Takashi Ko , Fumiharu Niina , Sho Tsuruta , Katsunori Yanagida , Natsumi Goto
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , C01G53/00
摘要： A positive electrode active material for nonaqueous electrolyte secondary batteries contains a lithium transition metal composite oxide that contains not less than 80% by mole of Ni relative to the total number of moles of metal elements other than Li; and Ti is present at least in the surfaces of particles of the composite oxide. With respect to this positive electrode active material, if particles having a volume-based particle diameter more than the 70% particle diameter (D70) are taken as first particles and particles having a volume-based particle diameter less than the 30% particle diameter (D30) are taken as second particles, the molar fraction (A2) of Ti relative to the total number of moles of metal elements in the surfaces of the second particles is higher than the molar fraction (A1) of Ti relative to the total number of moles of metal elements in the surfaces of the first particles.
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公开(公告)号：US20210226294A1
公开(公告)日：2021-07-22
申请号：US17146700
申请日：2021-01-12
IPC分类号： H01M50/291 , H01M10/0525 , H01M4/36 , H01M4/587 , H01M4/133 , H01M50/209 , H01M10/0585
摘要： An advantage of the present invention is to suppress an increase in resistance during high-rate charge and discharge and a reduction in capacity during a charge and discharge cycle. An electrical storage module of the present embodiment includes: an electrical storage device, and an elastic body that is placed with the electrical storage device and receives a load from the electrical storage device in a placement direction. The electrical storage device includes a positive electrode, a negative electrode, and a separator. The negative electrode includes a negative-electrode active material layer. The negative-electrode active material layer includes a first layer formed on the negative-electrode current collector, and a second layer that is formed on the first layer and has a higher compression modulus than the first layer. The separator has a lower compression modulus than the first layer, and the elastic body has a lower compression modulus than the separator.
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公开(公告)号：US11909033B2
公开(公告)日：2024-02-20
申请号：US16982284
申请日：2019-01-22
发明人： Kouhei Tsuzuki , Yuki Morikawa , Hirokazu Wada , Yuta Matsuo , Kaori Ishikawa , Katsunori Yanagida
CPC分类号： H01M4/366 , H01M4/133 , H01M4/134 , H01M4/364 , H01M4/386 , H01M4/587 , H01M10/0525 , H01M2004/021 , H01M2004/027
摘要： In a nonaqueous electrolyte secondary battery, a negative electrode mix layer includes a first layer and a second layer disposed successively from a negative electrode collector. The first layer contains a first carbon-based active material having a 10% compressive strength of 3 MPa or less and a silicon-based active material containing Si. The second layer contains a second carbon-based active material having a 10% compressive strength of 5 MPa or more and has a lower content (mass ratio) of the silicon-based active material than the first layer.
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公开(公告)号：US20210296683A1
公开(公告)日：2021-09-23
申请号：US17200084
申请日：2021-03-12
发明人： Yuki Morikawa , Takuya Asari , Harunari Shimamura , Kouhei Tsuzuki , Katsunori Yanagida , Yo Kato
IPC分类号： H01M10/0525 , H01M10/0561 , H01M4/66
摘要： The present disclosure relates to a secondary battery module including a nonaqueous electrolyte secondary battery and an elastic body. The elastic body has a compressive elastic modulus of 5 MPa to 120 MPa. The positive electrode includes a positive electrode collector with a thermal conductive rate of 65 W/(m·K) to 150 W/(m·K). The negative electrode includes a negative electrode active material layer including a first layer and a second layer sequentially formed from a side with the negative electrode collector. The first layer contains first carbon-based active material particles with a 10% proof stress of 3 MPa or less. The second layer contains second carbon-based active material particles with a 10% proof stress of 5 MPa or greater.
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公开(公告)号：US20210296639A1
公开(公告)日：2021-09-23
申请号：US17200058
申请日：2021-03-12
发明人： Yasunori Baba , Harunari Shimamura , Keisuke Ohara , Kohei Masai , Kouhei Tsuzuki , Katsunori Yanagida , Yo Kato
摘要： The present disclosure relates to a secondary battery module including a nonaqueous electrolyte secondary battery and an elastic body. The elastic body has a compressive elastic modulus of 5 MPa to 120 MPa. The nonaqueous electrolyte secondary battery includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector containing Ti as a main component and having a thickness of 1 μm to 8 μm. The negative electrode includes a first layer and a second layer sequentially formed from a side with the negative electrode collector. The first layer contains negative electrode active material particles containing first carbon-based active material particles with a 10% proof stress of 3 MPa or less. The second layer contains negative electrode active material particles containing second carbon-based active material particles with a 10% proof stress of 5 MPa or greater.
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公开(公告)号：US20210194009A1
公开(公告)日：2021-06-24
申请号：US17124589
申请日：2020-12-17
发明人： Naoto Onodera , Katsunori Yanagida , Yo Kato
摘要： This negative electrode comprises an electrode current collector, and an electrode mixture layer provided on a surface of the electrode current collector. When, with respect to the thickness direction of the electrode mixture layer, a range from the surface on the side of the electrode current collector to 40% of the thickness of the electrode mixture layer is defined as a first region, and a range from the surface on the side opposite to the electrode current collector to 40% of the thickness of the electrode mixture layer is defined as a second region, the first region and the second region have different volume change ratio upon charge and discharge, and the region having the larger volume change ratio upon charge and discharge has a higher content of a solid inorganic filler and a lower content of a hollow inorganic filler than the region having the smaller volume change ratio.
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公开(公告)号：US11817577B2
公开(公告)日：2023-11-14
申请号：US17200058
申请日：2021-03-12
发明人： Yasunori Baba , Harunari Shimamura , Keisuke Ohara , Kohei Masai , Kouhei Tsuzuki , Katsunori Yanagida , Yo Kato
CPC分类号： H01M4/366 , H01M4/583 , H01M50/46 , H01M50/471 , H01M2004/027 , H01M2004/028
摘要： The present disclosure relates to a secondary battery module including a nonaqueous electrolyte secondary battery and an elastic body. The elastic body has a compressive elastic modulus of 5 MPa to 120 MPa. The nonaqueous electrolyte secondary battery includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector containing Ti as a main component and having a thickness of 1 μm to 8 μm. The negative electrode includes a first layer and a second layer sequentially formed from a side with the negative electrode collector. The first layer contains negative electrode active material particles containing first carbon-based active material particles with a 10% proof stress of 3 MPa or less. The second layer contains negative electrode active material particles containing second carbon-based active material particles with a 10% proof stress of 5 MPa or greater.
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公开(公告)号：US11742548B2
公开(公告)日：2023-08-29
申请号：US17146700
申请日：2021-01-12
IPC分类号： H01M50/291 , H01M50/209 , H01M4/36 , H01M4/58 , H01M10/0525 , H01M4/587 , H01M10/0585 , H01M4/133 , H01M4/02
CPC分类号： H01M50/291 , H01M4/133 , H01M4/366 , H01M4/587 , H01M10/0525 , H01M10/0585 , H01M50/209 , H01M2004/021 , H01M2004/027
摘要： An advantage of the present invention is to suppress an increase in resistance during high-rate charge and discharge and a reduction in capacity during a charge and discharge cycle. An electrical storage module of the present embodiment includes: an electrical storage device, and an elastic body that is placed with the electrical storage device and receives a load from the electrical storage device in a placement direction. The electrical storage device includes a positive electrode, a negative electrode, and a separator. The negative electrode includes a negative-electrode active material layer. The negative-electrode active material layer includes a first layer formed on the negative-electrode current collector, and a second layer that is formed on the first layer and has a higher compression modulus than the first layer. The separator has a lower compression modulus than the first layer, and the elastic body has a lower compression modulus than the separator.
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公开(公告)号：US11557787B2
公开(公告)日：2023-01-17
申请号：US17200084
申请日：2021-03-12
发明人： Yuki Morikawa , Takuya Asari , Harunari Shimamura , Kouhei Tsuzuki , Katsunori Yanagida , Yo Kato
IPC分类号： H01M10/00 , H01M10/0525 , H01M10/0561 , H01M4/66 , H01M4/02
摘要： The present disclosure relates to a secondary battery module including a nonaqueous electrolyte secondary battery and an elastic body. The elastic body has a compressive elastic modulus of 5 MPa to 120 MPa. The positive electrode includes a positive electrode collector with a thermal conductive rate of 65 W/(m·K) to 150 W/(m·K). The negative electrode includes a negative electrode active material layer including a first layer and a second layer sequentially formed from a side with the negative electrode collector. The first layer contains first carbon-based active material particles with a 10% proof stress of 3 MPa or less. The second layer contains second carbon-based active material particles with a 10% proof stress of 5 MPa or greater.
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