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公开(公告)号：US20250047208A1
公开(公告)日：2025-02-06
申请号：US18783772
申请日：2024-07-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Ye HE , Rongsen ZHENG , Shangrong LAN
Abstract: A power conversion apparatus may include a direct current-direct current conversion circuit and a controller. The direct current-direct current (DC-DC) conversion circuit may include a full-bridge circuit, the full-bridge circuit includes a first bridge arm and a second bridge arm that are connected in parallel, and each of the bridge arms includes an upper bridge arm switch and a lower bridge arm switch that are connected in series. The controller controls turn-on/off of the upper bridge arm switch and the lower bridge arm switch of each of the bridge arms based on a voltage of a first connection point between the upper bridge arm switch and the lower bridge arm switch in the first bridge arm and a voltage of a second connection point between the upper bridge arm switch and the lower bridge arm switch in the second bridge arm.
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公开(公告)号：US20240283244A1
公开(公告)日：2024-08-22
申请号：US18653079
申请日：2024-05-02
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Hua JIANG , Yiyi HUANG , Hui DONG
IPC: H02J1/08
CPC classification number: H02J1/084
Abstract: A power supply circuit may include a plurality of first switches, a plurality of second switches, and a third switch. The plurality of first switches may be in a one-to-one correspondence with the plurality of load units, and the plurality of second switches may be in a one-to-one correspondence with the plurality of load units. A first end of each first switch and a first end of the third switch may be connected to a first end of a direct current power supply, a second end of each first switch may be connected to a first end of a corresponding second switch and a first end of a corresponding load unit, a second end of each second switch may be connected to a second end of the third switch, and a second end of the direct current power supply may be connected to a second end of each load unit.
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公开(公告)号：US20250105662A1
公开(公告)日：2025-03-27
申请号：US18971290
申请日：2024-12-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Ren SHENG , Fan WU , Baoguo CHEN , Rui GE
IPC: H02J9/06 , H01M10/42 , H01M50/204 , H01M50/251 , H01M50/51 , H02J1/08 , H02M1/00
Abstract: An energy storage cabinet includes a battery rack and a power conversion system. A switch unit is connected between a battery unit and the power conversion system. A first end of the power conversion system is connected to a bus. When an energy storage cabinet in the energy storage system is started, a voltage at the first end of the power conversion system is greater than a first preset voltage. The power conversion system in the to-be-started energy storage cabinet may obtain, through the first end, a voltage output by the started energy storage cabinet, convert the voltage into a target voltage, and then supply power to the start unit. After obtaining the power, the start unit controls the switch unit to be turned on. The battery unit may output stored electric energy through the power conversion system, to start the energy storage cabinet.
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公开(公告)号：US20240258591A1
公开(公告)日：2024-08-01
申请号：US18631638
申请日：2024-04-10
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hong TUO , Yi CAI , Wenguang LI , Baoguo CHEN
CPC classification number: H01M10/4264 , H02J7/0068 , H01M2010/4271 , H01M2220/10 , H02J2207/20
Abstract: A battery management system includes a sampling control unit, a DC/DC conversion unit, and an energy storage unit. When the battery pack needs to be heated, based on battery parameters of the battery pack and a voltage and a current limit value of the DC/DC conversion unit, the sampling control unit may control, in each of at least one consecutive first cycle, the battery pack to discharge to the energy storage unit by using the DC/DC conversion unit; control, in each of at least one consecutive second cycle, the energy storage unit to charge the battery pack by using the DC/DC conversion unit; and control, in the at least one consecutive first cycle and the at least one consecutive second cycle, an average charge/discharge current value of the battery pack to be less than or equal to a charge/discharge current limit value.
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公开(公告)号：US20250023481A1
公开(公告)日：2025-01-16
申请号：US18735535
申请日：2024-06-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN
Abstract: A power conversion device includes a first filter inductor and an AC/AC circuit, where the first filter inductor includes three inductor windings, and a first inductor magnetic core. The first inductor winding, the second inductor winding, and the third inductor winding are all wound around the first inductor magnetic core. The first inductor winding is connected to a first input end of the power conversion device, the second inductor winding is connected to a second input end and a second output end of the power conversion device, the first inductor winding and a second end of the second inductor winding are separately connected to the AC/AC circuit, the third inductor winding is connected to a first output end of the power conversion device, and the second inductor winding and a second end of the third inductor winding are separately connected to the AC/AC circuit.
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Patent Agency Ranking
公开(公告)号：US20240088775A1
公开(公告)日：2024-03-14
申请号：US18466077
申请日：2023-09-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Ren SHENG , Rui GE , Ling LIU
CPC classification number: H02M1/0048 , H02M3/158
Abstract: A power conversion apparatus and an energy storage system, including a power conversion circuit, a first power terminal, a second power terminal, and a third power terminal. The power conversion circuit includes a first positive end, a first negative end, a second positive end, a second negative end, and at least one power device. The first negative end and the second negative end have a same potential. The power conversion circuit is configured to convert a first voltage input by a first device into a second voltage and output the second voltage to a second device. The first power terminal is connected to the first positive end, the first negative end or the second negative end is connected to the second power terminal, and the third power terminal is connected to the second positive end.
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公开(公告)号：US20220385096A1
公开(公告)日：2022-12-01
申请号：US17825602
申请日：2022-05-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Jianhua ZHU
IPC: H02J7/00 , H01M10/48 , H01M10/44 , H01M10/637
Abstract: The battery control circuit includes a first inductor, a first switch tube, a second switch tube, a first diode, and a second diode. A first terminal of the first switch tube and a cathode of the first diode are both coupled to the positive electrode of the battery pack, and a second terminal of the first switch tube is coupled to a terminal of the first inductor and a cathode of the second diode. An anode of the first diode is coupled to another terminal of the first inductor and a first terminal of the second switch tube, and a second terminal of the second switch tube and an anode of the second diode are both coupled to the negative electrode of the battery pack. The first switch tube and the second switch tube are simultaneously turned on or turned off.
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公开(公告)号：US20230283169A1
公开(公告)日：2023-09-07
申请号：US18316392
申请日：2023-05-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Wing Cong CHEUNG , Pengpeng YU
CPC classification number: H02M1/32 , H02M7/06 , H02M3/158 , H02M5/4585
Abstract: A power converter includes a protection circuit, a controller, and a power conversion circuit. The protection circuit includes a first positive temperature coefficient (PTC) resistor, a first switch unit, and a second switch unit. The power conversion circuit includes a direct current bus, and the direct current bus includes a positive direct current bus and a negative direct current bus. The first switch unit is connected between a power supply and an input end of the power conversion circuit or is connected in series on the direct current bus of the power conversion circuit. The first PTC resistor is connected in parallel to the first switch unit. The second switch unit is connected in parallel between a positive port and a negative port of the input end of the power conversion circuit or is connected in parallel between the positive direct current bus and the negative direct current bus.
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9.发明公开公开(公告)号：US20230154671A1
公开(公告)日：2023-05-18
申请号：US18150995
申请日：2023-01-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zezhou YANG , Liqiong YI , Shu ZHONG , Baoguo CHEN , Xiaolu HU
CPC classification number: H01F27/306 , H01F27/2804 , H01F3/14 , H02M1/0064 , H02M3/33569 , H01F2038/006
Abstract: A matrix transformer, a power converter, and a matrix transformer winding arrangement method. Each of the magnetic core columns of n sub-transformers of the matrix transformer is wound with a first winding and a second winding, first windings are used to form a high-voltage-side winding of the matrix transformer, and second windings are used to form a low-voltage-side winding of the matrix transformer. A ratio of a turn quantity design value of the high-voltage-side winding to the quantity n of the sub-transformers is not an integer.
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公开(公告)号：US20240291289A1
公开(公告)日：2024-08-29
申请号：US18586044
申请日：2024-02-23
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Huajia LI , Zepeng ZHENG , Baoguo CHEN
CPC classification number: H02J7/0014 , H02J7/0048 , H02J7/00712 , H02M3/01 , H02M3/33571 , H02M3/33573 , H02M3/33576 , H02J2207/20
Abstract: Examples of an equalization circuit, a battery pack, and an energy storage system are described. In one example, an equalization circuit is configured to: when a difference between a state of charge (SOC) of a battery pack and an SOC or SOCs of any one or more other battery packs exceeds an equalization threshold, by turning on or off switch transistors of a bridge resonant circuit and a bridge circuit, receive, through an equalization bus, discharge power of the one or more other battery packs, and input charge power to the battery pack; or receive discharge power output by the battery pack, and output, to the equalization bus, charge power for inputting to the one or more other battery packs, so that uniformity between SOCs of the battery packs can be flexibly adjusted.
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