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

IPC: H02J7/00 ,  H02P27/08 ,  B60L50/51 ,  B60L50/60

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.

公开(公告)号：US20220144093A1

公开(公告)日：2022-05-12

申请号：US17583744

申请日：2022-01-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhiyin Chen ,  Yue Chen ,  Xueliang Zhang

IPC: B60L3/00 ,  B60W20/20 ,  H04L12/40

Abstract: This application provides an electric drive system, a powertrain, and an electric vehicle. The electric drive system is connected to power batteries and includes: a bus, a three-level inverter circuit, a DC-DC conversion 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 neutral point, and the second bus capacitor is connected between the negative bus and the bus neutral point. The DC-DC conversion circuit includes a first conversion circuit and a second conversion circuit, an input terminal of the first conversion circuit is connected in parallel to the first bus capacitor, and an input terminal of the second conversion circuit is connected in parallel to the second bus capacitor.

公开(公告)号：US12047025B2

公开(公告)日：2024-07-23

申请号：US18149261

申请日：2023-01-03

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yue Chen ,  Xueliang Zhang ,  Ningbo Feng

IPC: H02P27/08 ,  H02M3/00 ,  H02M3/335

CPC classification number: H02P27/08 ,  H02M3/01 ,  H02M3/335

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.

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

IPC: B60L50/64 ,  B60L53/62 ,  B60L58/21 ,  B60L53/63 ,  H02J7/00 ,  H01M50/51 ,  H01M10/42

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.

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

IPC: H02J7/00 ,  H02P27/06 ,  H02M7/5387 ,  B60L53/20 ,  B60L53/53 ,  B60L53/62 ,  B60L58/10 ,  B60L15/20

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.

公开(公告)号：US11518246B2

公开(公告)日：2022-12-06

申请号：US17583744

申请日：2022-01-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhiyin Chen ,  Yue Chen ,  Xueliang Zhang

IPC: B60L3/00 ,  H04L12/40 ,  B60W20/20 ,  B60W20/30

Abstract: An electric drive system is connected to power batteries and includes a bus, a three-level inverter circuit, a direct current (DC)-DC conversion 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 neutral point, and the second bus capacitor is connected between the negative bus and the bus neutral point. The DC-DC conversion circuit includes a first conversion circuit and a second conversion circuit, an input terminal of the first conversion circuit is connected in parallel to the first bus capacitor, and an input terminal of the second conversion circuit is connected in parallel to the second bus capacitor.