公开(公告)号：US20240250336A1

公开(公告)日：2024-07-25

申请号：US18289594

申请日：2022-04-15

Applicant: NIPPON STEEL CORPORATION

Inventor： Shinji KODAMA ,  Sho MATSUI ,  Kyohei MIYAKE ,  Yutaka MIKAZUKI ,  Takashi OKE ,  Katsunari NORITA

IPC: H01M10/6556 ,  B21D22/02 ,  B23K1/00 ,  B23K1/005 ,  H01M10/613 ,  H01M10/651

CPC classification number: H01M10/6556 ,  B21D22/02 ,  B23K1/0016 ,  B23K1/0056 ,  H01M10/613 ,  H01M10/651

Abstract: A cooling structure according to an aspect of the present invention includes a press forming member including a groove part and a bank part provided around the groove part, a flow path upper lid positioned on a position covering the groove part of the press forming member, and a joint portion which joins opposing surfaces of the flow path upper lid and the bank part to form a flow path through which a cooling liquid is capable of flowing, in which the press forming member and the flow path upper lid are plated steel sheets having a base steel sheet and having an Al-based plating having a film thickness of 10.0 μm or more or a Zn-based plating having a film thickness of 5.0 μm or more, in which a sheet thickness of the plated steel sheets 0.3 mm to 1.2 mm, the joint portion is formed of a joining metal brazing the base steel sheets of the press forming member and the flow path upper lid, and a partial flow path interval is 20 mm or less and a joining width is 3 mm or more.

公开(公告)号：US20240243386A1

公开(公告)日：2024-07-18

申请号：US18289564

申请日：2022-04-15

Applicant: NIPPON STEEL CORPORATION

Inventor： Sho MATSUI ,  Shinji KODAMA ,  Kyohei MIYAKE ,  Yutaka MIKAZUKI ,  Takashi OKE ,  Katsunari NORITA

IPC: H01M10/6556 ,  H01M10/04 ,  H01M10/613 ,  H01M10/651 ,  H01M10/6568

CPC classification number: H01M10/6556 ,  H01M10/0481 ,  H01M10/651 ,  H01M10/6568 ,  H01M10/613

Abstract: A cooling structure according to an aspect of the present invention includes a press forming member including a groove part and a bank part provided around the groove part, a flow path upper lid which is a flat sheet overlapped at a position covering the groove part of the press forming member and forms a flat cooling surface, and a laser weld which joins opposing surfaces of the flow path upper lid and the bank part to form a flow path through which a cooling liquid is capable of flowing, in which the press forming member and the flow path upper lid are plated steel sheets including a base steel sheet and an Al-based plating, the flow path has a parallel flow path portion in which a plurality of partial flow paths extending along a first direction are arranged in a second direction orthogonal to the first direction, and in the parallel flow path portion, an interval between adjacent partial flow paths is 20 mm or less.

公开(公告)号：US20220055696A1

公开(公告)日：2022-02-24

申请号：US17275863

申请日：2019-09-26

Applicant: NIPPON STEEL CORPORATION

Inventor： Sho MATSUI ,  Chisato YOSHINAGA

IPC: B62D27/02 ,  B23K20/12 ,  B62D29/00

Abstract: According to the present invention, provided are a joint structure (100) which joins a plurality of overlapped steel members (110, 120) using a connecting element (130) having a shaft portion (131), the joint structure including: a first steel member (110); and one or more of second steel members (120) overlapping the first steel member (110), in which the shaft portion (131) of the connecting element (130) is penetrated through the second steel member (120), and the shaft portion (131) of the connecting element (130) and the second steel member (120) are joined by friction welding, and the shaft portion (131) and the first steel member (110) are joined by friction welding, and a joining method for obtaining the joint structure.

公开(公告)号：US20240120595A1

公开(公告)日：2024-04-11

申请号：US18276317

申请日：2022-02-07

Applicant: NIPPON STEEL CORPORATION

Inventor： Kyohei MIYAKE ,  Atsuo KOGA ,  Kohei UEDA ,  Yutaka MIKAZUKI ,  Katsunari NORITA ,  Sho MATSUI ,  Takashi OKE

IPC: H01M50/24 ,  H01M10/613 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/227 ,  H01M50/231

CPC classification number: H01M50/24 ,  H01M10/613 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/227 ,  H01M50/231

Abstract: This battery unit is a battery unit including a battery pack that houses a battery cell, and a water-cooling medium flow path formed outside a bottom surface of the battery pack, in which the water-cooling medium flow path is made of a Zn-based plated steel sheet, an inorganic film or a resin film is formed as a chemical conversion coating film on a surface of the Zn-based plated steel sheet, and the inorganic film contains a Si-based component or a Zr-based component as a main component.

公开(公告)号：US20200269341A1

公开(公告)日：2020-08-27

申请号：US16652351

申请日：2018-10-05

Applicant: NIPPON STEEL CORPORATION

Inventor： Sho MATSUI ,  Masahiro SAITO ,  Seiji FURUSAKO ,  Yasunobu MIYAZAKI

IPC: B23K11/11 ,  B23K11/34

Abstract: Art for spot welding able to suppress penetration of hydrogen, one of the factors behind delayed fracture, at the time of spot welding, that is, a spot welding method in which at one or both of the surfaces of the steel sheets becoming the facing surfaces of the overlaid steel sheets, a location where the steel sheets contact each other to form a contact part at the time of initial squeezing of the spot welding is worked in advance to form a plurality of lines running through the contact part and connected to the outside of the contact part and the spot welding is performed at the location of the contact part and also a steel sheet in which the plurality of lines are formed in advance at the location becoming a contact part when steel sheets contact each other at the time of initial squeezing in the spot welding.

公开(公告)号：US20240154208A1

公开(公告)日：2024-05-09

申请号：US18274995

申请日：2022-02-04

Applicant: NIPPON STEEL CORPORATION

Inventor： Kyohei MIYAKE ,  Atsuo KOGA ,  Kohei UEDA ,  Yutaka MIKAZUKI ,  Katsunari NORITA ,  Sho MATSUI ,  Takashi OKE

IPC: H01M10/6556 ,  B32B15/01 ,  C21D8/02 ,  C21D9/46 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C23C2/12 ,  C23C2/20 ,  C23C2/28 ,  C23C2/40 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/231 ,  H01M50/24

CPC classification number: H01M10/6556 ,  B32B15/012 ,  C22C21/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/231 ,  H01M50/24 ,  C21D8/0226 ,  C21D8/0236 ,  C21D9/46 ,  C23C2/12 ,  C23C2/20 ,  C23C2/28 ,  C23C2/40 ,  H01M2220/20

Abstract: This battery unit is a battery unit including a battery pack that houses a battery cell, and a water-cooling medium flow path formed outside a bottom surface of the battery pack, in which the water-cooling medium flow path of the battery pack is made of an Al-based plated steel sheet.