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公开(公告)号：US12206323B2
公开(公告)日：2025-01-21
申请号：US17994635
申请日：2022-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hua Jiang , Zejie Lv , Baoguo Chen
Abstract: A bridgeless PFC circuit includes: a control module that collects a current flowing through a current sampling element; and when the current flowing through the current sampling element is greater than a first threshold, the control module controls a switch element to be turned on. Based on the current flowing through the current sampling element, the switch element can be controlled to be turned on, thereby implementing zero-voltage turn-on of the switch element. Because the collected current does not change abruptly, a delay requirement on a sampling control circuit included in the control module is lowered, and a signal anti-interference capability of the control module is strong.
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Patent Agency Ranking
公开(公告)号：US20250038284A1
公开(公告)日：2025-01-30
申请号：US18783760
申请日：2024-07-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Gongde CHEN , Baoguo Chen , Ye He
IPC: H01M10/48 , H01M10/0525 , H01M10/42
Abstract: An energy storage system includes an electrochemical cell pack, a startup circuit, and an auxiliary source circuit. The startup circuit includes a first control circuit and a second control circuit, the second control circuit includes a first voltage divider circuit and a second voltage divider circuit that are connected in series, the first voltage divider circuit includes a switching device and a voltage divider that are connected in series, and a connection point between the first voltage divider circuit and the second voltage divider circuit is connected to a first control end of the first control circuit. When the switching device is turned on, a voltage of the electrochemical cell pack needs to meet a specified condition, and the first control circuit turns on a line between the electrochemical cell pack and the auxiliary source circuit, to enable the battery pack to supply power to the auxiliary source circuit.
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公开(公告)号：US20240159798A1
公开(公告)日：2024-05-16
申请号：US18419284
申请日：2024-01-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dinghua Shen , Wenguang Li , Baoguo Chen , Hongda Weng
CPC classification number: G01R15/04 , G01R19/0084 , G01R35/005
Abstract: The voltage sampling apparatus includes a differential circuit, a voltage division circuit, and a first calibration switch. A first output end of the differential circuit and an input end of a first voltage division branch of the voltage division circuit are connected to one end of the first calibration switch. A second output end of the differential circuit and an input end of a second voltage division branch of the voltage division circuit are connected to the other end of the first calibration switch. When the first calibration switch is in an on state, the differential circuit is configured to input a target signal to the first voltage division branch and the second voltage division branch that are connected in parallel.
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公开(公告)号：US12136848B2
公开(公告)日：2024-11-05
申请号：US18152278
申请日：2023-01-10
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo Chen , Jianhua Zhu
Abstract: The battery assembly includes a control unit and a DCDC converter. The control unit is configured to, when a first load is short-circuited in a process in which the battery assembly supplies power to the first load, control the DCDC converter to output a first current. The first current is greater than a maximum nominal discharge current of the battery assembly, is used to break an electrical connection between the first load and a busbar, and is less than a short-circuit protection current of the battery assembly; and/or the control unit is configured to, after a power supply encounters a power failure, control a discharge capability of the battery assembly to be greater than a maximum nominal discharge capability of the battery assembly, and supply power to a first load and a second load by using a DCDC converter.
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公开(公告)号：US20230223753A1
公开(公告)日：2023-07-13
申请号：US18180844
申请日：2023-03-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo Chen , Pan Chen , Hua Yu , Liqiong Yi
IPC: H02J3/00
CPC classification number: H02J3/00125 , H02J3/0012 , H02J3/32
Abstract: Embodiments of this application provide a power supply method and apparatus, an electronic device, and a readable storage medium. The method includes: determining whether a current power grid is a weak power grid; if the current power grid is a weak power grid, determining a target current limit value based on an actual input voltage of a power system; and supplying power to a load based on the target current limit value. The power system may adaptively adjust a current limit value of the power system based on an input voltage, so as to supply power to the load while avoiding undervoltage in the power system.
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公开(公告)号：US20230170793A1
公开(公告)日：2023-06-01
申请号：US18161884
申请日：2023-01-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo Chen , Dazhi Wang , Pengpeng Yu
CPC classification number: H02M3/003 , H02J9/061 , H02M3/1582
Abstract: This application discloses a three-wire DC-DC converter and a parallel power supply system. The parallel power supply system includes a common wiring busbar, an input wiring busbar, an output wiring busbar, and at least two three-wire DC-DC converters. Each three-wire DC-DC converter includes a DC-DC conversion circuit, an input wiring terminal, an output wiring terminal, and a common wiring terminal. Input wiring terminals of all the three-wire DC-DC converters are connected in parallel to the input wiring busbar, output wiring terminals of all the three-wire DC-DC converters are connected in parallel to the output wiring busbar, and the common wiring terminals of all the three-wire DC-DC converters are connected in parallel to the common wiring busbar. The wiring busbar is configured to connect a first direct current power supply and a load.
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