公开(公告)号：US20240304961A1

公开(公告)日：2024-09-12

申请号：US18586547

申请日：2024-02-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Hiroshi SAKAI ,  Hiroshi OGASA ,  Wataru SHIMIZU

IPC: H01M50/581 ,  H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M10/04 ,  H01M10/052 ,  H01M50/489

CPC classification number: H01M50/581 ,  H01M4/134 ,  H01M4/382 ,  H01M4/661 ,  H01M10/0481 ,  H01M10/052 ,  H01M50/489

Abstract: A lithium secondary battery of the present invention comprises: a positive electrode comprising a positive electrode current collector and a positive electrode material mixture layer, a negative electrode comprising a negative electrode current collector and a lithium metal foil, and a separator, and further comprises a thermally deformable separator disposed in the vicinity of the positive electrode material mixture layer on the surface of the positive electrode current collector, and an extension portion that extends from the lithium metal foil so as to be in contact with the thermally deformable separator; the thermally deformable separator having a melting point of 80° C. or higher, which is equal to or lower than the melting point of lithium metal; and when a thermally deformable separator 31 thermally deforms, the extension portion comes into contact with the positive electrode current collector, resulting in a short circuit of the positive electrode and the negative electrode.

公开(公告)号：US20230163361A1

公开(公告)日：2023-05-25

申请号：US18058734

申请日：2022-11-24

Applicant: HONDA MOTOR CO., LTD. ,  SAITAMA PREFECTURE

Inventor： Hiroshi OGASA ,  Hideki KURIHARA

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2300/0037

Abstract: There is provided an electrolytic solution including magnesium fluoride, lithium salt, a first solvent, and a second solvent, the first solvent having a dielectric constant of less than 10, and the second solvent having a dielectric constant of more than 50.

公开(公告)号：US20220085415A1

公开(公告)日：2022-03-17

申请号：US17447932

申请日：2021-09-17

Applicant: HONDA MOTOR CO., LTD. ,  SAITAMA PREFECTURE

Inventor： Hiroshi OGASA ,  Hideki KURIHARA ,  Masashi INAMOTO

IPC: H01M10/0568 ,  H01M10/052 ,  H01M4/134 ,  H01M4/38 ,  H01M50/44 ,  H01M10/0569

Abstract: To provide a lithium secondary battery capable of suppressing short circuits and having high energy density and high output. An electrolyte medium for a lithium secondary battery includes a low dielectric constant solvent, a lithium salt, and a polyvalent cation salt. The polyvalent cation salt is dispersed as particles in the electrolyte medium and can flow without being immobilized. The electrolyte medium includes 20 mass % or less of a high dielectric constant solvent. A lithium secondary battery including the electrolyte medium for a lithium secondary battery can suppress short circuits and provide high energy density and high output.