公开(公告)号：US12057281B2

公开(公告)日：2024-08-06

申请号：US17656709

申请日：2022-03-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Guangming Huang ,  Yang Zhu ,  Taixian Chen

IPC: H01H50/18 ,  H01H50/02 ,  H01H50/36 ,  H01H50/44 ,  H01H50/54

CPC classification number: H01H50/18 ,  H01H50/02 ,  H01H50/36 ,  H01H50/44 ,  H01H50/546

Abstract: This application provides a direct current contactor which includes a housing, and a first fixed contact and a second fixed contact that are fastened into the housing; a first moving contact and a second moving contact that are located in the housing; a drive mechanism, including: an insulation rod connected to the first moving contact and the second moving contact, and a drive component that drives the insulation rod to drive the first moving contact and the second moving contact to synchronously move toward the first fixed contact and the second fixed contact; and a pressing component configured to push the moving contact firmly against the fixed contact. Only two pairs of contacts are used to implement connection/disconnection of two electrode lines, so that a total contactor resistance is reduced by half compared with that in the conventional technology.

公开(公告)号：US12198884B2

公开(公告)日：2025-01-14

申请号：US18062788

申请日：2022-12-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chunpeng Gu ,  Hongjiang Dong ,  Yan Ji ,  Guangming Huang ,  Taixian Chen ,  Fugao Zhao

IPC: H01H73/18 ,  H01H50/04 ,  H01H50/58 ,  H01H50/60

Abstract: A direct current contactor includes a case and two groups of contact components disposed in the case. Each group of contact components includes two moving contacts connected to each other and two fixed contacts. The direct current contactor further includes a drive system configured to drive the moving contacts to move in a direction close to or away from the fixed contacts, so that the moving contacts are connected to or disconnected from the fixed contacts. The case has an arc-extinguishing cavity. A first baffle in the arc-extinguishing cavity divides the arc-extinguishing cavity into a first arc-extinguishing chamber and a second arc-extinguishing chamber. The contact components are respectively located in the first arc-extinguishing chamber and the second arc-extinguishing chamber. In other words, the two groups of contact components are integrated into two arc-extinguishing chambers of one arc-extinguishing cavity and perform connection/disconnection drive by using a single drive system.

公开(公告)号：US12198881B2

公开(公告)日：2025-01-14

申请号：US17947531

申请日：2022-09-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaokang Tian ,  Taixian Chen ,  Fugao Zhao ,  Guangming Huang

IPC: H01H50/62 ,  H01H50/02 ,  H01H50/56

Abstract: An electromagnetic switch, including a driving apparatus and a contact apparatus. The contact apparatus includes a moving contact assembly, a chamber, and two spaced fixed contacts disposed on a top part of the chamber. The moving contact assembly includes an insulating part, a push rod, a moving contact, and an elastic part. One end of the push rod is mounted on the driving apparatus, and the other end of the push rod is mounted on the insulating part. The moving contact is mounted on one side that is of the insulating part and that is back to the push rod. The elastic part is clamped between the insulating part and the moving contact, so that the moving contact is in contact with or separated from the pair of fixed contacts under the action of the push rod.