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    Network device and power supply method
    1.
    发明授权
    Network device and power supply method 有权

    公开(公告)号：US11329837B2

    公开(公告)日：2022-05-10

    申请号：US16391021

    申请日：2019-04-22

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: G06F1/30 ,  H04L12/10 ,  G06F1/26 ,  H04L12/40

    Abstract: A network device includes a power system, a processor, a power sourcing equipment PSE chip coupled to a first forward power supply port, and a first powered device PD chip coupled to a first reverse power receiving port. A first powered device is connected to the first forward power supply port and the first reverse power receiving port. When detecting that a power failure occurs on the network device, the processor instructs the first PD chip to draw power from the first powered device; the first PD chip draws the power from the first powered device through the first reverse power receiving port, and supplies the obtained power to the power system. Therefore, when a power failure occurs, the network device can continue to obtain power and work properly when the power failure occurs.

    Power supply method, device, and power supply system
    3.
    发明授权
    Power supply method, device, and power supply system 有权

    公开(公告)号：US10951425B2

    公开(公告)日：2021-03-16

    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: G06F1/26 ,  H04L12/10 ,  H04L12/40

    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, Device, and System
    4.
    发明申请
    Power Supply Management Method, Device, and System 审中-公开

    公开(公告)号：US20200092118A1

    公开(公告)日：2020-03-19

    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: H04L12/10 ,  G06F1/3203

    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 Supply Method, Device, and Power Supply System
    5.
    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, device, and system
    6.
    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 sourcing equipment and power over ethernet system
    7.
    发明授权
    Power sourcing equipment and power over ethernet system 有权

    公开(公告)号：US11183838B2

    公开(公告)日：2021-11-23

    申请号：US16433718

    申请日：2019-06-06

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Shiyong Fu ,  Yan Zhuang ,  Qi Dong ,  Xiangen Xu ,  Xueqi Chen ,  Yu Ding

    IPC: H02H9/00 ,  H02H9/04 ,  H04L12/10 ,  H02H3/22 ,  H02H7/20

    Abstract: Power sourcing equipment for power over Ethernet (PoE) includes a power supply control circuit, an Ethernet port, and a surge protection circuit. The surge protection circuit includes a first circuit, a second circuit, and a common discharge circuit. The first circuit is connected to a power supply pin group of the Ethernet port, the power supply control circuit, and the common discharge circuit. The second circuit is connected to a non-power supply pin group of the Ethernet port and the common discharge circuit. The first circuit transmits, to the common discharge circuit, a first surge that is input from the power supply pin group. The second circuit transmits, to the common discharge circuit, a second surge that is input from the non-power supply pin group. The common discharge circuit discharges the first surge and the second surge to ground.

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