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1.发明授权公开(公告)号：US11811251B2
公开(公告)日：2023-11-07
申请号：US17585006
申请日：2022-01-26
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Yang Cheng , Xueliang Zhang
CPC classification number: H02J7/0031 , B60L50/64 , B60L53/62 , B60L53/63 , B60L58/21 , H01M10/425 , H01M10/4207 , H01M50/51 , H02J7/0013 , H02J7/0048 , H02J7/0063 , B60L2210/10 , H01M2010/4271 , H01M2220/20 , H02J2207/20
Abstract: An on-board distributed power supply system is coupled to an on-board distributed drive system. The on-board distributed drive system includes at least two power trains, and the on-board distributed power supply system includes at least two low-voltage battery pack groups. Each low-voltage battery pack group of the at least two low-voltage battery pack groups includes at least one low-voltage battery pack. Each low-voltage battery pack of the at least one low-voltage battery pack includes a plurality of battery cells. Each low-voltage battery pack group of the at least two low-voltage battery pack groups is correspondingly electrically connected to at least one of the power trains in the on-board distributed drive system, and is configured to provide electric energy for each power train of the at least two power trains in the on-board distributed drive system.
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公开(公告)号：US11791649B2
公开(公告)日：2023-10-17
申请号：US17580841
申请日：2022-01-21
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang Cheng , Xueliang Zhang
CPC classification number: H02J7/007182 , B60L15/20 , B60L53/20 , B60L53/53 , B60L53/62 , B60L58/10 , H02J7/0042 , H02J7/0063 , H02M7/5387 , H02P27/06 , B60L2210/12 , B60L2210/42 , H02J2207/20
Abstract: This application provides a charging system and an electric vehicle. The charging system mainly includes an MCU and a motor. N bridge arms in the MCU and N motor windings in the motor are multiplexed to constitute a voltage conversion circuit. When a power supply voltage is less than a minimum charging voltage of a power battery, the MCU may perform boost conversion on the power supply voltage by using the voltage conversion circuit, and output the power supply voltage obtained after boost conversion to the power battery as a first output voltage, where the first output voltage is not less than the minimum charging voltage. In this application, space occupied by the charging system and costs of the charging system can be reduced while the charging system is used to perform boost conversion on the power supply voltage.
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Patent Agency Ranking
公开(公告)号：US20230070930A1
公开(公告)日：2023-03-09
申请号：US17987290
申请日：2022-11-15
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shida Gu , Wei Zhang , Yang Cheng , Zhaoxue Cui
Abstract: A charging circuit of an on-board charger, where a second end of a first power conversion circuit of the charging circuit is coupled to a first end of a second power conversion circuit, a high-voltage output end of the second power conversion circuit charges a power battery pack of an electric vehicle, and a first low-voltage output end of the second power conversion circuit supplies power to a low-voltage system of the electric vehicle. The first power conversion circuit is configured to, when the electric vehicle is in a charging mode, convert an alternating current input from a first end of the first power conversion circuit into a direct current and transmit the direct current to the first end of the second power conversion circuit.
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公开(公告)号：US20250042306A1
公开(公告)日：2025-02-06
申请号：US18780790
申请日：2024-07-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yankun XU , Sen Cao , Yang Cheng
IPC: B60L58/27 , B60L15/20 , H01M10/615 , H01M10/625 , H01M10/637
Abstract: A method for pulse heating a power battery of an electric vehicle and an electric vehicle. A powertrain includes a first power circuit and a second power circuit. The method is used to control the second power circuit or a motor power circuit to generate a pulse alternating current on a direct current bus, and the pulse alternating current is used to heat the power battery. A phase value of a pulse alternating current output by at least one of the first power circuit and the second power circuit is adjusted, to reduce a phase difference between a pulse alternating current generated by the first power circuit and a pulse alternating current generated by the second power circuit, thereby improving heating efficiency of the power battery.
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公开(公告)号：US12202361B2
公开(公告)日：2025-01-21
申请号：US17889695
申请日：2022-08-17
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang Cheng , Chunyang Liu
Abstract: This application provides a motor drive system, a power system, and an electric vehicle, and relates to the field of power electronic technologies. The drive system is configured to drive a motor that uses a power battery pack as a power supply. The power battery pack includes at least two battery modules that are independent of each other, the drive system includes at least two direct current-alternating current DC-AC circuits, and the battery modules one-to-one correspond to the DC-AC circuits. Each battery module is correspondingly connected to an input end of one DC-AC circuit, and an output end of each DC-AC circuit is connected to a corresponding winding of the motor. The DC-AC circuit is configured to convert a direct current provided by the corresponding battery module into an alternating current to drive the corresponding winding of the motor.
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公开(公告)号：US12107425B2
公开(公告)日：2024-10-01
申请号：US17980812
申请日：2022-11-04
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaofeng Yao , Yang Cheng , Guozhao Duan
CPC classification number: H02J3/381 , H02J3/00125 , H02M1/32 , H02J2300/24
Abstract: This application discloses a photovoltaic power generation system and method, and the system includes an inverter and at least one shutdown apparatus. A type of the shutdown apparatus includes at least one of a shutdown device and an optimizer; and an input end of each shutdown apparatus is connected to a corresponding PV module, and power of the corresponding PV module is output. In the system, when a parameter of the inverter meets a preset condition, some shutdown apparatuses are turned off to lower an input voltage of the inverter, and ensure that an input end of the inverter has a direct current source, and the system can operate as usual; and the preset condition is that the input voltage of the inverter is greater than a first preset voltage, or an input current of the inverter is less than a first preset current.
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公开(公告)号：US11777331B2
公开(公告)日：2023-10-03
申请号：US17580015
申请日：2022-01-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xueliang Zhang , Yang Cheng
CPC classification number: H02J7/0068 , B60L50/51 , B60L50/60 , H02P27/08 , B60L2210/40
Abstract: This application provides a motor control unit, an electric drive system, a powertrain. A first terminal of a power transmission interface of the motor control unit is connected to a first input terminal of an inverter circuit by using a first direct current switch, and a second terminal of the power transmission interface is connected to a first terminal of a switch circuit. The switch circuit includes three switch branches, where first terminals of the three switch branches are connected to the first terminal of the switch circuit, second terminals of the three switch branches are respectively connected to one-phase output terminals of the inverter circuit, and each switch branch includes a controllable switch. The input terminal of the inverter circuit is connected to a power battery pack by using a second direct current switch. Using the motor control unit reduces a volume and hardware costs, and improves applicability.
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