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公开(公告)号：US11811217B2
公开(公告)日：2023-11-07
申请号：US17584102
申请日：2022-01-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A photovoltaic power generation system includes a capacitor bridge arm, an inverter bridge arm, and the fault protection apparatus. The capacitor bridge arm includes a positive electrode output port, a negative electrode output port, and a reference output port The inverter bridge arm includes a positive electrode input port, a negative electrode input port, and a reference input port. The positive electrode input port is connected to the positive electrode output port. The negative electrode input port is connected to the negative electrode output port. The reference input port is connected to the reference output port by using the fault protection apparatus. The fault protection apparatus is turned off based on a magnitude value or a variation of a voltage, or a magnitude value or a variation of a current between the reference input port and the positive electrode input port or the negative electrode input port.
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公开(公告)号：US20230344239A1
公开(公告)日：2023-10-26
申请号：US18345556
申请日：2023-06-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong ZHANG , Hongmiao FANG , Bo YU , Jinxiang ZHAN , Tiansan LIN
IPC: H02J3/38 , H02M1/36 , H02M7/5387
CPC classification number: H02J3/381 , H02M1/36 , H02M7/53871 , H02J2300/24
Abstract: A first input end of a first inverter is connected to a second end of a direct current positive bus, and a second input end of the first inverter is connected to a second end of a neutral bus. A first input end of a second inverter is connected to the second end of the neutral bus, and a second input end of the second inverter is connected to a second end of a direct current negative bus. A controller is configured to control, in startup and shutdown processes, a voltage to ground of the direct current positive bus, a voltage to ground of the direct current negative bus, and a voltage to ground of the neutral bus each to be less than or equal to a preset voltage threshold, to ensure personal safety and device safety.
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公开(公告)号：US20230336121A1
公开(公告)日：2023-10-19
申请号：US18338573
申请日：2023-06-21
Applicant: Huawei Digital Power Technologies Co.,Ltd.
CPC classification number: H02S50/00 , H02S40/32 , H02J3/381 , H02J2300/26
Abstract: An input end of each DC-DC conversion circuit in the photovoltaic system is connected to a corresponding photovoltaic string. Output ends of a plurality of DC-DC conversion circuits are connected in parallel to an input end of a DC-AC conversion circuit. A controller performs a partial IV curve scan on each of the DC-DC conversion circuits, and in a scanning process, controls a total input power of the plurality of DC-DC conversion circuits to be consistent with that existing before the scan; and obtains a sum of the maximum input powers of all the DC-DC conversion circuits based on the maximum input power of each of the DC-DC conversion circuits, where a scanned voltage of the partial IV curve scan is less than an open-circuit voltage. The partial IV curve improves scanning efficiency and obtains a maximum input power in a power-limited state, facilitating subsequent power dispatch and control.
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公开(公告)号：US20230327565A1
公开(公告)日：2023-10-12
申请号：US18332903
申请日：2023-06-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Wei ZHANG , Zhaoxue CUI , Ningbo FENG
CPC classification number: H02M3/33573 , B60L50/60 , B60R16/033 , H02J7/0013 , H02J7/02 , H02M3/33576 , H02M7/219 , H02J2207/20 , B60L2210/10
Abstract: An energy conversion system, an energy conversion method, and a power system. The energy conversion system may include a bridge arm conversion module, a direct current (DC)/DC conversion module, a motor, a bus capacitor, and a control module. The control module may be configured to control a bridge arm switch action in the bridge arm conversion module, drive the motor based on an alternating current input voltage supplied by a power supply, form a bus voltage at two ends of the bus capacitor, and control the DC/DC conversion module to charge a traction battery and an auxiliary battery based on the bus voltage. The traction battery and the auxiliary battery can be charged while the motor is driven, thereby achieving higher energy conversion efficiency, low costs, and strong applicability.
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135.发明授权公开(公告)号：US11780342B2
公开(公告)日：2023-10-10
申请号：US17707716
申请日：2022-03-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dianbo Fu , Weiping Liu , Shaohua Wang
CPC classification number: B60L53/22 , H02M1/4225 , B60L2210/14 , B60L2210/30
Abstract: An on-board charging apparatus is provided to implement high-power charging. The on-board charging apparatus includes an alternating current (AC) to direct current (DC) conversion circuit (AC/DC conversion circuit), a power factor correction (PFC) circuit, and a DC/DC conversion circuit. An alternating current terminal of the AC/DC conversion circuit is connected to an alternating current terminal of the PFC circuit. The AC/DC conversion circuit is configured to: receive a first alternating current voltage at the alternating current terminal of the AC/DC conversion circuit, and convert a first component of the first alternating current voltage into a first direct current voltage. The PFC circuit is configured to: convert a second component of the first alternating current voltage into a second direct current voltage. The DC/DC conversion circuit is configured to: convert the first direct current voltage and the second direct current voltage into a third direct current voltage.
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Patent Agency Ranking
公开(公告)号：US11777395B2
公开(公告)日：2023-10-03
申请号：US17679386
申请日：2022-02-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M1/007 , H02M1/0074 , H02M1/092 , H02M5/225 , H01F27/40 , H01F2027/408 , H02M3/33584 , H02M7/043
Abstract: An isolated communications apparatus applied to a transformer. The transformer includes N first rectifier units and a second rectifier unit, and the isolated communications apparatus includes N first control units, a second control unit, and a signal convergence unit. The first control units are connected to the first rectifier units in a one-to-one correspondence. Each first control unit is connected to the signal convergence unit, and the signal convergence unit and the second control unit are connected through an optical fiber. The signal convergence unit is configured to: receive first data packets from the N first control units, send the first data packets to the second control unit, receive at least one second data packet from the second control unit, determine a first control unit corresponding to each second data packet, and send each second data packet to a corresponding first control unit.
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公开(公告)号：US20230299690A1
公开(公告)日：2023-09-21
申请号：US18321824
申请日：2023-05-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xudong WANG , Zhaohui WANG , Lei SHI
CPC classification number: H02M7/487 , H02J3/381 , H02J2300/24
Abstract: A neutral point clamped inverter and a photovoltaic power supply system include a power module, a switch module, and a control module. The power module may include a power supply and a first capacitor and a second capacitor that are connected in series and then connected in parallel to two ends of the power supply. The switch module may include a first switch unit, a second switch unit, and a third switch unit. The control module may be separately connected to the first switch unit, the second switch unit, and the third switch unit. The control module may control each of the first switch unit, the second switch unit, and the third switch unit to be turned on or turned off, so that different switch units in the switch module are selected to bear a conduction loss or a switching loss.
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138.发明公开公开(公告)号：US20230291208A1
公开(公告)日：2023-09-14
申请号：US18316387
申请日：2023-05-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xinyu YU , Kai XIN , Jianqiang WANG , Song WAN
CPC classification number: H02J3/46 , H02S50/10 , H02J3/0012 , H02J2300/26
Abstract: The photovoltaic power generation system includes a controller and M groups of DC-DC circuits. Each group of DC-DC circuits include N DC-DC circuits, where M is a positive integer, and N is an integer greater than 1. An input end of each DC-DC circuit is connected to at least one photovoltaic unit, and each photovoltaic unit includes at least one photovoltaic module. The controller controls the N DC-DC circuits in each group of DC-DC circuits to sequentially start online IV curve scanning and controls a time interval at which two adjacent DC-DC circuits start online IV curve scanning to be less than duration of online IV curve scanning performed by one DC-DC circuit. The photovoltaic power generation system can reduce a fluctuation of a power output during online IV curve scanning, reduce duration of online IV curve scanning performed by the photovoltaic power generation system.
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公开(公告)号：US20230282914A1
公开(公告)日：2023-09-07
申请号：US18176977
申请日：2023-03-01
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yezheng Zhang , Jinxing Yang , Jing Zhu , Zheng Zhong
CPC classification number: H01M50/15 , H01M10/425 , H01M10/486 , H01M2010/4271 , H01M2010/4278
Abstract: A battery cover plate is provided, to resolve problems such as a signal transmission structure and sealing performance of the battery cover plate. The battery cover plate includes a plate body, a battery management unit, and a sensor assembly, wherein the plate body has an outer surface and an inner surface facing away from the outer surface. The battery management unit is disposed in the plate body, wherein a transmission structure is provided between the battery management unit and the outer surface, and the battery management unit includes a wireless communication module. The wireless communication module may perform wireless communication with the outside by using the transmission structure. The sensor assembly is connected to the battery management unit, wherein the sensor assembly is disposed in the plate body and extends out of the inner surface.
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公开(公告)号：US20230282690A1
公开(公告)日：2023-09-07
申请号：US18179197
申请日：2023-03-06
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Chunkun JIAO
IPC: H01L29/06 , H01L29/423 , H01L29/78
CPC classification number: H01L29/0607 , H01L29/4236 , H01L29/7827
Abstract: Example semiconductor devices, integrated circuits, and electronic devices are provided. One example semiconductor device includes an n-type semiconductor substrate, a drift layer, a semiconductor layer, a groove, a shielding structure, a source, and a drain. A p-type shielding structure is disposed at the drift layer. The p-type shielding structure includes a plurality of first shielding structures and a plurality of second shielding structures. Each first shielding structure extends in a first direction. Each second shielding structure extends in a second direction. The first direction intersects with the second direction. The plurality of first shielding structures and the plurality of second shielding structures are disposed in a grid shape.
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