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公开(公告)号:US20180316065A1
公开(公告)日:2018-11-01
申请号:US15952450
申请日:2018-04-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor: 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: H01M10/42 , H01M10/0585 , H01M2/26 , H01M4/38
Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a 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 with a cathode current collecting tab, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector with an anode current collecting tab, 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) 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; and condition ii) 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:US20180316066A1
公开(公告)日:2018-11-01
申请号:US15952493
申请日:2018-04-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor: 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: H01M10/42 , H01M10/0525 , H01M4/64 , H01M4/38
Abstract: 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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公开(公告)号:US20180316049A1
公开(公告)日:2018-11-01
申请号:US15952332
申请日:2018-04-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor: 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: H01M10/0525 , H01M4/66 , H01M4/38
CPC classification number: H01M10/4235 , H01M4/667 , H01M10/0525 , H01M2200/00 , H01M2300/0065
Abstract: 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:US20180316048A1
公开(公告)日:2018-11-01
申请号:US15952301
申请日:2018-04-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor: 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: H01M10/0525 , H01M4/38
CPC classification number: H01M10/0525 , H01M4/134 , H01M4/386 , H01M4/624 , H01M2004/021 , H01M2004/027
Abstract: 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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