公开(公告)号：EP4167335A1

公开(公告)日：2023-04-19

申请号：EP20940349.2

申请日：2020-06-12

申请人： NISSAN MOTOR CO., LTD. ,  RENAULT s.a.s.

发明人： DOI, Shotaro ,  TAMURA, Yuko ,  KISHI, Michito ,  LI, Zhenguang ,  OGIHARA, Wataru

IPC分类号： H01M10/0562

摘要： [Problem] To provide a means for inhibiting the growth of dendrite in a solid electrolyte layer while suppressing the decrease in ion conductivity in the solid electrolyte layer, in a secondary battery which includes a solid electrolyte layer.
[Solution] In a secondary battery which includes a power-generating element formed by laminating a positive electrode which contains a positive electrode active material, a solid electrolyte layer which contains a solid electrolyte, and a negative electrode which contains a negative electrode active material, a binder having a Young's modulus of 200 [MPa] or lower is further contained in the solid electrolyte layer.

公开(公告)号：EP4421959A1

公开(公告)日：2024-08-28

申请号：EP22883037.8

申请日：2022-10-14

申请人： NISSAN MOTOR CO., LTD. ,  Renault s.a.s

发明人： DOI, Shotaro ,  ONO, Yoshitaka ,  ARAI, Masaei ,  TANAKA, Hiroyuki ,  OSHIHARA, Kenzo

IPC分类号： H01M50/262 ,  H01M10/0585 ,  H01M50/202 ,  H01M50/211

CPC分类号： Y02E60/10 ,  Y02P70/50 ,  H01M50/202 ,  H01M50/211 ,  H01M50/262 ,  H01M10/0585

摘要： A pressurizing structure for a storage battery which applies pressure in a thickness direction to a structure including a storage battery cell including an electrode portion packaged with a laminate exterior material or the structure including a laminate in which a plurality of the storage battery cells are laminated, the pressurizing structure including, a pair of end plates disposed at corresponding two ends of the structure in the thickness direction, and a fastening member configured to fasten the pair of end plates to each other, wherein an elastic body is disposed at at least one of positions sandwiched between the end plate and the structure, a rigid body is disposed at a position sandwiched between the elastic body and the structure, and any one of the end plate, the elastic body, and the rigid body further includes a deformation preventing portion configured to prevent deformation of the elastic body in a direction perpendicular to the thickness direction.

公开(公告)号：EP3657579A1

公开(公告)日：2020-05-27

申请号：EP18835168.8

申请日：2018-07-18

申请人： Nissan Motor Co., Ltd.

发明人： DOI, Shotaro ,  KUSACHI, Yuki ,  HORIE, Hideaki ,  NAKASHIMA, Yusuke ,  TSUCHIDA, Kazuya ,  SUMIYA, Koji ,  ASANO, Shigehito ,  KOGA, Yasuyuki ,  ANDO, Nobuo ,  KOKUBO, Terukazu

IPC分类号： H01M4/36 ,  H01G11/06 ,  H01G11/50 ,  H01G11/86 ,  H01M4/587

摘要： There is provided a means capable of suppressing generation of a lithium dendrite at the time of charging and discharging while sufficiently suppressing an amount of gas generated at the time of initial charging of an electric device.
When a lithium ion is doped in advance to a negative electrode active material, which is used in an electric device including a positive electrode and a negative electrode, after performing a pre-doping step of doping the lithium ion to a negative electrode active material to be doped to reduce a potential (vs. Li+/Li) of the negative electrode active material to be doped with respect to a lithium metal, a dedoping step of dedoping the lithium ion from the negative electrode active material doped with the lithium ion in the pre-doping step to increase a potential (vs. Li+/Li) of the negative electrode active material with respect to the lithium metal is performed.

公开(公告)号：EP4459738A1

公开(公告)日：2024-11-06

申请号：EP22915266.5

申请日：2022-12-16

申请人： NISSAN MOTOR CO., LTD. ,  Renault s.a.s

发明人： DOI, Shotaro ,  ONO, Yoshitaka ,  TANAKA, Hiroyuki ,  OSHIHARA, Kenzo

IPC分类号： H01M10/44 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/48

摘要： [Abstract] To provide a means for more effectively suppressing a short circuits in a secondary battery. A method for charging a secondary battery including a positive electrode current collector, a positive electrode active material layer, a solid electrolyte layer, and a negative electrode current collector in this order and utilizing a deposition-dissolution reaction of metallic lithium as a reaction of a negative electrode, the method having a multi-stage charging step, and comprising at least: a first charging step in which the secondary battery is charged at a first current density I1 to deposit metallic lithium on a surface on the solid electrolyte layer side of the negative electrode current collector to form a deposited Li layer that is a part of a negative electrode active material layer and that comprises the metallic lithium; and a second charging step in which the secondary battery is charged at a second current density I2 greater than the first current density I1 after the first charging step to increase a thickness of the deposited Li layer, wherein the first charging step includes performing pausing at least once or discharging at least once, in which the secondary battery is charged at the first current density I1 so that an SOC does not exceed 4.5%.

公开(公告)号：EP3780234A1

公开(公告)日：2021-02-17

申请号：EP19785263.5

申请日：2019-04-09

申请人： NISSAN MOTOR CO., LTD.

发明人： DOI, Shotaro ,  YAMAUCHI, Noboru ,  KUSACHI, Yuki ,  SATOU, Hajime ,  HORIE, Hideaki ,  NAKASHIMA, Yusuke ,  SHOJI, Naofumi ,  TSUCHIDA, Kazuya ,  SUMIYA, Koji ,  HATAZOE, Takumi ,  ASANO, Shigehito ,  ANDO, Nobuo

IPC分类号： H01M10/0568 ,  H01M4/13 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M10/052

摘要： Provided is a means that can suppress, in a non-aqueous electrolyte secondary battery that uses a negative electrode active material including a Si material and uses an electrolyte solution including LiFSI, the occurrence of an exothermic reaction that can cause deterioration of the battery even in a case when the battery temperature has risen.
A non-aqueous electrolyte secondary battery according to the present invention has a power generating element that includes a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a surface of a positive electrode current collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a surface of a negative electrode current collector, and a separator impregnated with an electrolyte solution. Here, the negative electrode active material includes a Si material that contains silicon and is capable of insertion and removal of lithium ions. The electrolyte solution contains lithium bis (fluorosulfonyl) imide (LiFSI) and an inorganic lithium salt other than the LiFSI, and has a feature that a ratio of a concentration (mol/L) of the LiFSI with respect to a concentration (mol/L) of the inorganic lithium salt (LiFSI/inorganic lithium salt) in the electrolyte solution is 1 or less.