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公开(公告)号：US20220216723A1
公开(公告)日：2022-07-07
申请号：US17579935
申请日：2022-01-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xueliang ZHANG , Yang CHENG
Abstract: This application provides a charging system and an electric vehicle. The charging system includes a motor control unit (MCU) and a first inductor. A first bridge arm in the MCU and the first inductor 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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公开(公告)号：US20230396093A1
公开(公告)日：2023-12-07
申请号：US18451176
申请日：2023-08-17
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Ningbo FENG , Shaofei WANG , Jingzhou WEI , Xueliang ZHANG
IPC: H02J7/14 , H02K1/16 , H02K1/2706 , H02M7/217
CPC classification number: H02J7/14 , H02K1/16 , H02K1/2706 , H02M7/217 , B60L50/60
Abstract: A motor, a charging apparatus and a powertrain. The motor of the charging apparatus includes a rotor, a stator, a primary coil, and a secondary coil. The stator includes a stator core. The primary coil is wound around a yoke part of the stator core, and the primary coil is coupled to an external power supply. The secondary coil is wound around the yoke part of the stator core, and the secondary coil and the primary coil are wound around different groove structures inside the stator core. The primary coil and the secondary coil implement coupling voltage transformation through the stator core, to step up or step down an output voltage of the external power supply.
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Patent Agency Ranking
公开(公告)号：US20230147551A1
公开(公告)日：2023-05-11
申请号：US18149261
申请日：2023-01-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yue CHEN , Xueliang ZHANG , Ningbo FENG
Abstract: An electric drive system is connected to a power battery pack to drive a motor, the motor includes an exciting winding, and the electric drive system includes a bus, a three-level inverter circuit, an electric excitation circuit, and a controller. The bus includes a positive bus and a negative bus. The three-level inverter circuit includes a first bus capacitor and a second bus capacitor. The first bus capacitor is connected between the positive bus and a bus midpoint, and the second bus capacitor is connected between the negative bus and the bus midpoint. A first input terminal of the electric excitation circuit is connected in parallel to the first bus capacitor, a second input terminal of the electric excitation circuit is connected in parallel to the second bus capacitor, and an output terminal of the electric excitation circuit is connected to the exciting winding of the motor.
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公开(公告)号：US20220216714A1
公开(公告)日：2022-07-07
申请号：US17580015
申请日：2022-01-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xueliang ZHANG , Yang CHENG
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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公开(公告)号：US20220209565A1
公开(公告)日：2022-06-30
申请号：US17580841
申请日：2022-01-21
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang CHENG , Xueliang ZHANG
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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6.发明申请公开(公告)号：US20220209553A1
公开(公告)日：2022-06-30
申请号：US17585006
申请日：2022-01-26
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Yang CHENG , Xueliang ZHANG
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：US20240128914A1
公开(公告)日：2024-04-18
申请号：US18364666
申请日：2023-08-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yankun XU , Ningbo FENG , Xueliang ZHANG
CPC classification number: H02P27/08 , B60L15/007
Abstract: A powertrain, a control method, and a hybrid electric vehicle. The powertrain includes a motor controller unit and a motor. The motor controller unit includes N bridge arms, and the motor includes N motor windings corresponding to the N bridge arms. Each of the N bridge arms includes a first end and a second end, the first end of each bridge arm is connected to a positive bus, the second end of each bridge arm is connected to a negative bus, a midpoint of each bridge arm is connected to one end of one motor winding, the other end of each of the N motor windings is connected to one end of a power battery, and the other end of the power battery is connected to the positive bus or the negative bus.
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