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公开(公告)号：US11189886B2
公开(公告)日：2021-11-30
申请号：US16078318
申请日：2017-01-23
Inventor： Hiroki Watanabe , Hitoshi Maeda , Katsutoshi Takeda
IPC: H01M10/0583 , H01M50/463 , H01M50/40 , H01M50/116 , H01M10/04
Abstract: A stack-type nonaqueous electrolyte secondary battery includes an electrode stack. The electrode stack is housed in an exterior body and includes a plurality of positive electrodes, a plurality of negative electrodes, and a separator. The positive electrodes and the negative electrodes are alternately arranged. The separator includes a fanfold portion including a plurality of intervening elements interposed between the positive electrodes and the negative electrodes. The separator includes a wrapper portion at a portion continuous with the fanfold portion. The wrapper portion extends out of the electrode stack and is disposed to cover at least part of a periphery of the electrode stack.
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公开(公告)号：US10367225B2
公开(公告)日：2019-07-30
申请号：US15749684
申请日：2016-08-08
Inventor： Shinya Miyazaki , Kazunori Donoue , Hiroki Watanabe
IPC: H01M2/26 , H01M10/0525 , H01G11/82 , H01M10/0585 , H01M4/134 , H01M4/66 , H01M2/02 , H01M4/38 , H01M10/04 , H01M4/02
Abstract: A power storage device includes a stacked electrode assembly in which a plurality of pairs of electrodes are stacked and a fixing tape which is placed astride both end portions of the stacked electrode assembly in an electrode-stacking direction and which includes a pair of bonded sections each bonded to a corresponding one of the end portions thereof and an intermediate section connecting the bonded sections together. The intermediate section of the fixing tape includes a base portion extending along a side surface of the stacked electrode assembly and a clearance portion projecting in a direction away from the side surface of the stacked electrode assembly and tape surfaces facing each other in the clearance portion are separably bonded to each other.
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公开(公告)号：US20190020009A1
公开(公告)日：2019-01-17
申请号：US16078318
申请日：2017-01-23
Inventor： Hiroki Watanabe , Hitoshi Maeda , Katsutoshi Takeda
IPC: H01M2/18 , H01M10/0583 , H01M10/04 , H01M2/02
Abstract: A stack-type nonaqueous electrolyte secondary battery includes an electrode stack. The electrode stack is housed in an exterior body and includes a plurality of positive electrodes, a plurality of negative electrodes, and a separator. The positive electrodes and the negative electrodes are alternately arranged. The separator includes a fanfold portion including a plurality of intervening elements interposed between the positive electrodes and the negative electrodes. The separator includes a wrapper portion at a portion continuous with the fanfold portion. The wrapper portion extends out of the electrode stack and is disposed to cover at least part of a periphery of the electrode stack.
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公开(公告)号：US20220059836A1
公开(公告)日：2022-02-24
申请号：US17417240
申请日：2019-11-25
Inventor： Hidekazu Hiratsuka , Hiroki Watanabe , Kazunori Donoue
IPC: H01M4/525 , H01M4/36 , H01M10/0525 , H01M4/505
Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery, the positive electrode active material comprising a Ni-containing lithium composite oxide a, b, wherein the Ni-containing lithium composite oxide a has an average primary particle size of 1 μm or more which is larger than the average primary particle size of the Ni-containing lithium composite oxide b, the Ni-containing lithium composite oxide a has an average secondary particle size of 2 to 6 μm, the Ni-containing lithium composite oxide b has an average primary particle size of 0.05 μm or more and an average secondary particle size of 10 to 20 μm, the Ni-containing lithium composite oxide a contains Mn and at least one of B and Al, the Ni-containing lithium composite oxide b contains Mn, and the ratio of the Ni-containing lithium composite oxide a to the Ni-containing lithium composite oxide b is 5:95 to 55:45.
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Patent Agency Ranking
公开(公告)号：US20180233771A1
公开(公告)日：2018-08-16
申请号：US15749684
申请日：2016-08-08
Inventor： Shinya Miyazaki , Kazunori Donoue , Hiroki Watanabe
IPC: H01M10/0525 , H01M4/134 , H01M4/66 , H01M2/26 , H01M10/0585
CPC classification number: H01M10/0525 , H01G11/12 , H01G11/76 , H01G11/82 , H01M2/021 , H01M2/0212 , H01M2/0287 , H01M2/266 , H01M4/134 , H01M4/386 , H01M4/661 , H01M10/0413 , H01M10/0436 , H01M10/0468 , H01M10/0585 , H01M2004/027 , H01M2004/028
Abstract: A power storage device includes a stacked electrode assembly in which a plurality of pairs of electrodes are stacked and a fixing tape which is placed astride both end portions of the stacked electrode assembly in an electrode-stacking direction and which includes a pair of bonded sections each bonded to a corresponding one of the end portions thereof and an intermediate section connecting the bonded sections together. The intermediate section of the fixing tape includes a base portion extending along a side surface of the stacked electrode assembly and a clearance portion projecting in a direction away from the side surface of the stacked electrode assembly and tape surfaces facing each other in the clearance portion are separably bonded to each other.
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公开(公告)号：US11742481B2
公开(公告)日：2023-08-29
申请号：US16981753
申请日：2019-01-22
Inventor： Kazunori Donoue , Hiroki Watanabe , Shinya Miyazaki
CPC classification number: H01M4/525 , H01M4/505 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes lithium composite oxide particles A and B containing Ni and Mn. The lithium composite oxide particles A include secondary particles a2 that are aggregations of primary particles a1, and contain at least one of zirconium and boron. The lithium composite oxide particles B include at least one of primary particles b1 and secondary particles b2, the primary particles b1 having a larger particle size than the primary particles a1, the secondary particles b2 being aggregations of the primary particles b1 and having a smaller particle size than the secondary particles a2. The mass ratio of the lithium composite oxide particles A to the lithium composite oxide particles B is within the range of 8:2 to 4:6.
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公开(公告)号：US20220149366A1
公开(公告)日：2022-05-12
申请号：US17430956
申请日：2019-11-29
Inventor： Hiroki Watanabe , Kazunori Donoue , Hidekazu Hiratsuka
Abstract: This positive electrode active material for nonaqueous electrolyte secondary batteries includes a Ni-containing lithium composite oxide A and Ni-containing lithium composite oxide B. The Ni-containing lithium composite oxide A contains at least 55 mol % of Ni relative to the total number of mols of metal elements other than Li. The Ni-containing lithium composite oxide B contains Ti and Ni. The Ni content in the Ni-containing lithium composite oxide B is at least 55 mol % relative to the total number of mols of metal elements other than Ti and Li. The Ni-containing lithium composite oxide A and the Ni-containing lithium composite oxide B have a prescribed average first particle diameter and a prescribed average second particle diameter, respectively, and the ratio between the Ni-containing lithium composite oxide A and the Ni-containing lithium composite oxide B is, in mass ratio, 5:95-55:45.
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公开(公告)号：US11942637B2
公开(公告)日：2024-03-26
申请号：US17417240
申请日：2019-11-25
Inventor： Hidekazu Hiratsuka , Hiroki Watanabe , Kazunori Donoue
IPC: H01M4/525 , H01M4/02 , H01M4/36 , H01M4/505 , H01M10/0525
CPC classification number: H01M4/525 , H01M4/364 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery, the positive electrode active material comprising a Ni-containing lithium composite oxide a, b, wherein the Ni-containing lithium composite oxide a has an average primary particle size of 1 μm or more which is larger than the average primary particle size of the Ni-containing lithium composite oxide b, the Ni-containing lithium composite oxide a has an average secondary particle size of 2 to 6 μm, the Ni-containing lithium composite oxide b has an average primary particle size of 0.05 μm or more and an average secondary particle size of 10 to 20 μm, the Ni-containing lithium composite oxide a contains Mn and at least one of B and Al, the Ni-containing lithium composite oxide b contains Mn, and the ratio of the Ni-containing lithium composite oxide a to the Ni-containing lithium composite oxide b is 5:95 to 55:45.
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公开(公告)号：US20210036321A1
公开(公告)日：2021-02-04
申请号：US16981753
申请日：2019-01-22
Inventor： Kazunori Donoue , Hiroki Watanabe , Shinya Miyazaki
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes lithium composite oxide particles A and B containing Ni and Mn. The lithium composite oxide particles A include secondary particles a2 that are aggregations of primary particles a1, and contain at least one of zirconium and boron. The lithium composite oxide particles B include at least one of primary particles b1 and secondary particles b2, the primary particles b1 having a larger particle size than the primary particles a1, the secondary particles b2 being aggregations of the primary particles b1 and having a smaller particle size than the secondary particles a2. The mass ratio of the lithium composite oxide particles A to the lithium composite oxide particles B is within the range of 8:2 to 4:6.
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