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公开(公告)号：US20240096729A1
公开(公告)日：2024-03-21
申请号：US18468174
申请日：2023-09-15
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Fenglong Lu , Yunyu Tang , Lei Shi , Yunfeng Liu , Shuyi Lv , Pengcheng Zhang
IPC: H01L23/367 , H01L23/13 , H01L23/373
CPC classification number: H01L23/367 , H01L23/13 , H01L23/3735 , H01L23/3736 , H01L23/3121
Abstract: A packaged device includes a circuit board, an electronic component, and a heat storage portion. The electronic component is electrically coupled to the circuit board; and the heat storage portion is disposed on the circuit board or embedded in the circuit board, and the heat storage portion is adjacent to the electronic component, where a specific heat capacity of the heat storage portion is higher than a specific heat capacity of the circuit board, and the heat storage portion is configured to store and release heat. A heat storage material with a relatively high specific heat capacity is introduced into the packaged device, and the heat storage portion is disposed on the circuit board around the electronic component where a large amount of heat generated by the electronic component in a short time can be quickly stored in the heat storage portion and then released to the outside.
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22.发明授权公开(公告)号：US11728769B2
公开(公告)日：2023-08-15
申请号：US17673140
申请日：2022-02-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yongbing Gao , Yunyu Tang , Lei Shi
Abstract: A fault detection apparatus includes a temperature detection unit, a current detection unit, a controller, and a breaking unit. The temperature detection unit is configured to detect temperatures of the plurality of filter capacitors and output the temperatures to the controller. The current detection unit is coupled to the plurality of filter capacitors and is configured to detect currents of the plurality of filter capacitors and output the currents to the controller. The controller is separately connected to the temperature detection unit, the current detection unit, and the breaking unit, and is configured to: when the received temperature exceeds a first threshold and the received current exceeds a second threshold, control the breaking unit to be disconnected. The breaking unit is connected between the output end of the grid-tied inverter and the plurality of filter capacitors and is configured to be disconnected or connected under control of the controller.
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公开(公告)号：US20230170711A1
公开(公告)日：2023-06-01
申请号：US18154784
申请日：2023-01-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhaohui Wang , He Zhou , Lei Shi
IPC: H02J7/00
CPC classification number: H02J7/0016 , H02J7/005 , H02J7/0029 , H02J7/0048 , H02J7/00712 , H02J3/32 , H02J2207/20
Abstract: This application provides an energy storage system including at least one energy storage unit cluster and a centralized monitoring system of the energy storage unit cluster. The energy storage unit cluster including at least two energy storage modules. A first energy storage unit cluster includes an energy storage element group and a switch bridge arm, the switch bridge arm including a master control switch and a bypass switch. The energy storage unit cluster is coupled to a direct current (DC) busbar through a DC/DC converter. The centralized monitoring system is connected to the energy storage unit cluster through a control bus and is configured to control the master control switch and the bypass switch of any energy storage module in the energy storage unit cluster to be on or off.
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公开(公告)号：US11606019B2
公开(公告)日：2023-03-14
申请号：US17495112
申请日：2021-10-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Lei Shi , Zhaohui Wang
Abstract: A control circuit includes a detection module configured to detect an operating condition of a semiconductor switching device; a determining module configured to determine a gate allowable voltage of the semiconductor switching device based on the operating condition; and an output module configured to output a control signal to a driving power supply circuit of the semiconductor switching device based on the gate allowable voltage, to control the driving power supply circuit to provide a gate on voltage that is not higher than the gate allowable voltage and that is positively correlated with the gate allowable voltage for the semiconductor switching device. When the operating condition of the semiconductor switching device becomes better, the gate allowable voltage of the semiconductor switching device is increased.
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公开(公告)号：US20230327543A1
公开(公告)日：2023-10-12
申请号：US18305215
申请日：2023-04-21
Applicant: Huawei Digital Power Technologies Co., Ltd. , SPIC Qinghai Photovoltaic Industry Innovation Center Co.,Ltd.
Inventor： Zhen Cao , Lei Shi , Yunfeng Liu , Feng Chong , Hualong Fan , Jiajia He , Shaopan Hou , Jie Zhang
Abstract: A backfeed soft-start circuit for a photovoltaic inverter is provided. The backfeed soft-start circuit includes a plurality of branch switches. A solar photovoltaic array includes a plurality of photovoltaic modules, where the plurality of branch switches are in a one-to-one correspondence with the plurality of photovoltaic modules, and when the plurality of branch switches are turned on, the corresponding photovoltaic modules are connected to the backfeed soft-start circuit; and a primary switching switch. The branch switches is connected to a corresponding photovoltaic module, and the primary switching switch. The primary switching switch is turned on after the branch switch is turned on.
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Patent Agency Ranking
公开(公告)号：US11716032B2
公开(公告)日：2023-08-01
申请号：US17729340
申请日：2022-04-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: H02M7/487 , G01R19/175 , H02M1/38 , H02M7/5387 , H02M1/00
CPC classification number: H02M7/487 , G01R19/175 , H02M1/38 , H02M7/5387 , H02M1/0058 , H02M1/385
Abstract: Embodiments of the present application disclose a multi-level inverter clamping modulation method and apparatus, and an inverter. Switching elements of an inverter are controlled when an output voltage of the inverter crosses zero, and switching elements in each inverter bridge arm of an active clamp multi-level inverter include an internal tube, an external tube, and a clamping tube. The internal tube and the external tube are connected in series between a positive bus and a negative bus, the clamping tube is connected between a common terminal of the internal tube and the external tube and a bus, the internal tube is a low-frequency switching element, and the external tube and the clamping tube are high-frequency switching elements.
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公开(公告)号：US11715959B2
公开(公告)日：2023-08-01
申请号：US17686163
申请日：2022-03-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Wanyuan Qu , Fangcheng Liu , Lei Shi , Wuhua Li
CPC classification number: H02J3/381 , H02M1/0095 , H02M3/156 , H02J2300/26
Abstract: A voltage conversion circuit includes: an inductor, a first switch module, N second switch modules connected in series, N third switch modules connected in series, and N−1 flying capacitors. One terminal of the first switch module is separately connected to one terminal of the N second switch modules connected in series and one terminal of the N third switch modules connected in series. The other terminal of the N third switch modules connected in series is connected to a positive electrode of a high-voltage power supply. The other terminal of the first switch module and the other terminal of the N second switch modules connected in series are connected to a negative electrode of the high-voltage power supply. A low-voltage power supply is connected to the two terminals of the first switch module through the inductor.
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公开(公告)号：US20230231481A1
公开(公告)日：2023-07-20
申请号：US18185976
申请日：2023-03-17
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhaohui Wang , Jun Wang , Lei Shi
CPC classification number: H02M3/1586 , H02M3/01 , H02M1/0067 , H02J3/38
Abstract: This application discloses a photovoltaic system. The photovoltaic system includes a DC/DC converter, a resonant switched capacitor converter, an inverter, and a controller. An input terminal of the DC/DC converter is connected to a photovoltaic array. A first input terminal of the resonant switched capacitor converter is connected to a positive output terminal of the DC/DC converter, and a second input terminal of the resonant switched capacitor converter is connected to a negative output terminal of the DC/DC converter. A first output terminal of the resonant switched capacitor converter is connected to a neutral wire of the inverter, a second output terminal of the resonant switched capacitor converter is connected to a negative bus of the inverter, and the resonant switched capacitor converter includes at least the following two resonant switched capacitor circuits RSCCs connected in parallel: a first RSCC and a second RSCC.
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公开(公告)号：US11641201B2
公开(公告)日：2023-05-02
申请号：US17332510
申请日：2021-05-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dianbo Fu , Zhaohui Wang , Jun Zhang , Lei Shi
IPC: H03K17/16 , H03K17/06 , H03K17/0812 , H03K17/567 , H03K17/687 , H03K17/0814 , H03K17/74
Abstract: A device includes a first switch and a first diode connected in parallel between a midpoint and a first terminal of the hybrid power device, a second switch and a second diode connected in parallel between the midpoint and a second terminal of the hybrid power device, a third switch coupled between the first terminal and the second terminal, and a third diode connected between the first terminal and the second terminal.
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公开(公告)号：US11489456B2
公开(公告)日：2022-11-01
申请号：US17157155
申请日：2021-01-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dianbo Fu , Zhaohui Wang , Lei Shi
Abstract: An inverter includes an upper unit comprises a first switch, a second switch and a third switch, wherein during a first half of a cycle of the inverter, the second switch is turned on before and turned off after the third switch, a lower unit comprising a fourth switch, a fifth switch and a sixth switch, wherein during a second half of the cycle of the inverter, the fifth switch is turned on before and turned off after the sixth switch, a flying capacitor connected between the upper unit and the lower unit, and a filter connected to a common node of the upper unit and the lower unit.
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