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公开(公告)号：US10559845B2
公开(公告)日：2020-02-11
申请号：US15952301
申请日：2018-04-13
发明人： Hajime Hasegawa , Yuki Matsushita , Hideaki Nishimura , Yusuke Okuhata , Norihiro Ose , Mitsuru Tateishi , Shigetaka Nagamatsu , Takayuki Uchiyama , Shigenori Hama , Dai Kato , Naohiro Mashimo , Hideyo Ebisuzaki , Ayano Kobayashi , Hisataka Fujimaki
IPC分类号： H01M10/00 , H01M10/0525 , H01M4/38 , H01M4/02
摘要： A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and the surface-side cell and the center-side cell satisfy at least one of: condition i) an electron conductivity of the cathode active material layer in the surface-side cell is less than an electron conductivity of the cathode active material layer in the center-side cell; and condition ii) an electron conductivity of the anode active material layer in the surface-side cell is less than an electron conductivity of the anode active material layer in the center-side cell.
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公开(公告)号：US11302953B2
公开(公告)日：2022-04-12
申请号：US15952332
申请日：2018-04-13
发明人： Hajime Hasegawa , Yuki Matsushita , Hideaki Nishimura , Yusuke Okuhata , Norihiro Ose , Mitsuru Tateishi , Shigetaka Nagamatsu , Takayuki Uchiyama , Shigenori Hama , Dai Kato , Naohiro Mashimo , Hideyo Ebisuzaki , Ayano Kobayashi , Hisataka Fujimaki
IPC分类号： H01M10/0525 , H01M4/66 , H01M4/38 , H01M10/42 , H01M4/02
摘要： A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and a contact resistance between the cathode current collector and the anode current collector in the surface-side cell is more than a contact resistance between the cathode current collector and the anode current collector in the center-side cell.
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公开(公告)号：US10910677B2
公开(公告)日：2021-02-02
申请号：US15952450
申请日：2018-04-13
发明人： Hajime Hasegawa , Yuki Matsushita , Hideaki Nishimura , Yusuke Okuhata , Norihiro Ose , Mitsuru Tateishi , Shigetaka Nagamatsu , Takayuki Uchiyama , Shigenori Hama , Dai Kato , Naohiro Mashimo , Hideyo Ebisuzaki , Ayano Kobayashi , Hisataka Fujimaki
IPC分类号： H01M2/26 , H01M10/04 , H01M10/0585 , H01M10/42 , H01M4/38 , H01M4/02 , H01M10/052
摘要： An objective of the present disclosure is to provide a stacked battery that suppresses sneak current caused by an unevenness of a short circuit resistance among a plurality of cells. The present disclosure provides a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; wherein a resistance of the cathode current collecting tab in the surface-side cell is more than a resistance of the cathode current collecting tab in the center-side cell; or a resistance of the anode current collecting tab in the surface-side cell is more than a resistance of the anode current collecting tab in the center-side cell.
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公开(公告)号：US11075409B2
公开(公告)日：2021-07-27
申请号：US15952493
申请日：2018-04-13
发明人： Hajime Hasegawa , Yuki Matsushita , Hideaki Nishimura , Yusuke Okuhata , Norihiro Ose , Mitsuru Tateishi , Shigetaka Nagamatsu , Takayuki Uchiyama , Shigenori Hama , Dai Kato , Naohiro Mashimo , Hideyo Ebisuzaki , Ayano Kobayashi , Hisataka Fujimaki
IPC分类号： H01M10/04 , H01M10/0525 , H01M10/0562 , H01M10/0585 , H01M10/42 , H01M4/02 , H01M4/38 , H01M4/64
摘要： A main object of the present disclosure is to provide a stacked battery in which the unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and the surface-side cell and the center-side cell satisfy at least one of: condition i) an elongation rate of the cathode current collector in the surface-side cell is less than an elongation rate of the cathode current collector in the center-side cell; and condition ii) an elongation rate of the anode current collector in the surface-side cell is less than an elongation rate of the anode current collector in the center-side cell.
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