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    Power Supply Method, Device, and Power Supply System
    11.
    发明申请
    Power Supply Method, Device, and Power Supply System 审中-公开

    公开(公告)号：US20190229934A1

    公开(公告)日：2019-07-25

    申请号：US16371918

    申请日：2019-04-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yan Zhuang ,  Shiyong Fu ,  Jincan Cao ,  Fuguang Huang ,  Xueqi Chen ,  Rui Hua

    IPC: H04L12/10 ,  G06F1/26

    Abstract: A power over Ethernet method includes: performing, by power sourcing equipment, a plurality of detections by using an Ethernet port, connected to an intermediate device, of the power sourcing equipment, where a quantity of detections performed by the power sourcing equipment is equal to a quantity of power supply ports of the intermediate device; and if at least one detection result of the plurality of detections is effective, sending, by the power sourcing equipment, a power supply indication to the intermediate device, and supplying power to the connection port. In this way, the power sourcing equipment can supply power across the intermediate device to a powered device connected to the intermediate device, and a power loss caused by voltage conversion is avoided.

    POWER SUPPLY MANAGEMENT METHOD, APPARATUS, AND SYSTEM
    12.
    发明公开
    POWER SUPPLY MANAGEMENT METHOD, APPARATUS, AND SYSTEM 审中-公开

    公开(公告)号：US20230273672A1

    公开(公告)日：2023-08-31

    申请号：US18313308

    申请日：2023-05-05

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Jincan Cao ,  Chao Ren ,  Jianhua Xu ,  Yu Ding

    IPC: G06F1/3296

    CPC classification number: G06F1/3296

    Abstract: This application discloses a power supply management system, and a power supply management method and apparatus applied to the system. The system includes a power sourcing equipment, a powered device, and a power supply line. The power sourcing equipment sends a second voltage to the powered device to determine a first voltage. The first voltage is a maximum power supply voltage agreed on by the power sourcing equipment and the powered device. The power sourcing equipment supplies power to the powered device based on the first voltage. In this application, the power sourcing equipment supplies power to the powered device based on the maximum power supply voltage that can be supported by the powered device, so that a loss on the power supply line is reduced.

    Power supply management method, device, and system
    14.
    发明授权
    Power supply management method, device, and system 有权

    公开(公告)号：US11265179B2

    公开(公告)日：2022-03-01

    申请号：US16694184

    申请日：2019-11-25

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yan Zhuang ,  Shiyong Fu ,  Jincan Cao ,  Fuguang Huang ,  Xueqi Chen ,  Rui Hua

    IPC: G06F1/32 ,  H04L12/10 ,  G06F1/3203 ,  H04W84/12

    Abstract: A power supply management method performed by power sourcing equipment, includes receiving a power-on request from a level-1 powered device, where the power-on request includes a port identifier of a level-2 power supply port that is detected to be valid in the level-1 powered device, determining, based on the power-on request and an outputtable power of the power sourcing equipment, a level-2 power supply port that is allowed to be powered on in the level-1 powered device, and sending a power-on instruction to the level-1 powered device, where the power-on instruction includes a port identifier of the level-2 power supply port that is allowed to be powered on in the level-1 powered device. The power sourcing equipment uses the level-1 powered device and a level-2 powered device connected to the level-1 powered device as a whole, and centrally performs power supply control and power management.

    Power over Ethernet Method and Device
    16.
    发明申请
    Power over Ethernet Method and Device 审中-公开

    公开(公告)号：US20170155517A1

    公开(公告)日：2017-06-01

    申请号：US15353278

    申请日：2016-11-16

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jincan Cao

    IPC: H04L12/10 ,  H04L12/26

    CPC classification number: H04L12/10 ,  H04L41/0833 ,  H04L43/08 ,  H04L43/50

    Abstract: A Power over Ethernet method and device, where the Power over Ethernet method includes: determining, by PSE, a maximum power of a PD according to a classification class of the PD; obtaining, by the PSE, a length of a network cable between the PSE and the PD; determining, by the PSE, a type of the network cable; calculating, by the PSE, a loss power of the network cable according to the length of the network cable and the type of the network cable; and using, by the PSE, a sum of the maximum power of the PD and the loss power of the network cable as a supply power, to supply power to the PD. The Power over Ethernet method and device provided in the present disclosure improves usage efficiency of the PSE supply power.

    Powered device used for power over ethernet
    18.
    发明授权
    Powered device used for power over ethernet 有权

    公开(公告)号：US10887117B2

    公开(公告)日：2021-01-05

    申请号：US16422268

    申请日：2019-05-24

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jincan Cao ,  Yonghuan Ding

    IPC: H04L12/10 ,  H02M7/217

    Abstract: A powered device (PD) used for power over Ethernet (PoE), where the PD includes an Ethernet port and a rectifier circuit. The rectifier circuit includes a first control circuit and a second control circuit, where the first control circuit is configured to control a first metal-oxide semiconductor field-effect transistor (MOSFET) and a second MOSFET, avoid turning on the first MOSFET and the second MOSFET at a PoE detection stage, and turn on at least one of the first MOSFET or the second MOSFET at a PoE power supply stage. The second control circuit is configured to control a third MOSFET and a fourth MOSFET, turn on at least one of the third MOSFET or the fourth MOSFET at the PoE power supply stage, and avoid turning on the third MOSFET and the fourth MOSFET at the PoE detection stage.

    Power over ethernet method and device
    19.
    发明授权
    Power over ethernet method and device 有权

    公开(公告)号：US10075302B2

    公开(公告)日：2018-09-11

    申请号：US15353278

    申请日：2016-11-16

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jincan Cao

    IPC: H04L12/10 ,  H04L12/26 ,  H04L12/24

    CPC classification number: H04L12/10 ,  H04L41/0833 ,  H04L43/08 ,  H04L43/50

    Abstract: A Power over Ethernet method and device, where the Power over Ethernet method includes: determining, by PSE, a maximum power of a PD according to a classification class of the PD; obtaining, by the PSE, a length of a network cable between the PSE and the PD; determining, by the PSE, a type of the network cable; calculating, by the PSE, a loss power of the network cable according to the length of the network cable and the type of the network cable; and using, by the PSE, a sum of the maximum power of the PD and the loss power of the network cable as a supply power, to supply power to the PD. The Power over Ethernet method and device provided in the present disclosure improves usage efficiency of the PSE supply power.

    Power Over Ethernet Method and Apparatus
    20.
    发明申请
    Power Over Ethernet Method and Apparatus 审中-公开
    以太网供电方法和设备

    公开(公告)号：US20160269187A1

    公开(公告)日：2016-09-15

    申请号：US15066630

    申请日：2016-03-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yan Zhuang ,  Shiyong Fu ,  Hua Chen ,  Xiuju Liang ,  Jincan Cao ,  Rui Hua

    IPC: H04L12/10 ,  G06F1/26

    CPC classification number: H04L12/10 ,  G06F1/26 ,  H04L12/40045 ,  Y02D30/30 ,  Y02D30/32 ,  Y02D50/30

    Abstract: A power over Ethernet method where power sourcing equipment (PSE) detects and determines that a first set of cable pairs and a second set of cable pairs of an Ethernet twisted pair are connected to a valid powered device (PD), the PSE receives a link layer discovery protocol data unit (LLDPDU) from the PD, where the LLDPDU includes a load quantity type-length-value (TLV) used to notify a quantity of PD loads included in the PD, and when the PD receives power from both the first set of cable pairs and the second set of cable pairs, and the PD includes two PD interfaces, and the PD includes two PD loads, the PSE supplies power to the PD at a first power using the first set of cable pairs, and supplies power to the PD at a second power using the second set of cable pairs.

    Abstract translation: 一种以太网供电方法，其中电源设备（PSE）检测并确定以太网双绞线的第一组电缆对和第二组电缆对连接到有效的供电设备（PD），PSE接收链路 来自PD的层发现协议数据单元（LLDPDU），其中LLDPDU包括用于通知包括在PD中的PD负载量的负载量类型长度值（TLV），以及当PD从第一个 电缆组和第二组电缆对，PD包括两个PD接口，PD包括两个PD负载，PSE使用第一组电缆对以第一电源为PD供电，并提供电源 使用第二组电缆对以第二功率到达PD。

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