公开(公告)号：US20230275440A1

公开(公告)日：2023-08-31

申请号：US18172548

申请日：2023-02-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shuang ZHANG ,  Hongxu JIANG ,  Xianyan FAN

IPC: H02J7/00

CPC classification number: H02J7/0019 ,  H02J7/007182 ,  H02J2207/20 ,  H02J3/32

Abstract: A battery electrical energy balancing circuit and method and an energy storage system include a controller, N battery control switches, a filter capacitor control unit, a balancing unit, and a sampling circuit. The balancing unit charges/discharges a target battery, and the sampling unit detects a voltage of the target battery. The filter capacitor control unit performs filtering. The controller controls a battery control switch connected to the target battery to be closed, to obtain the voltage value of the target battery detected by the sampling unit; or controls the balancing unit to charge/discharge the target battery.

公开(公告)号：US11738653B2

公开(公告)日：2023-08-29

申请号：US16911353

申请日：2020-06-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Huibin Zhu ,  Heping Dai ,  Yongtao Liang ,  Weiping Liu ,  Feng Su ,  Shaohua Wang

IPC: B60L53/24 ,  B60L53/22 ,  H02J7/02 ,  H02M3/335 ,  H02P27/06 ,  H02M1/00 ,  H02M7/5387

CPC classification number: B60L53/24 ,  B60L53/22 ,  H02J7/02 ,  H02M3/33507 ,  H02M7/53875 ,  H02P27/06 ,  B60L2210/10 ,  B60L2210/40 ,  H02M1/007

Abstract: According to one aspect of the present disclosure, there is provided an apparatus that includes a battery, a Direct Current (DC) bus connected to the battery, and a DC to DC converter connected to the battery in parallel with the DC bus. A Motor Control Unit (MCU) is connected between the DC to DC converter and an electric motor. An Alternating Current (AC) port is connected to the electric motor. Switches connect the DC bus and an output of the DC to DC converter in series as an input to the MCU in a drive mode and disconnect the DC bus from the MCU in a charge mode.

公开(公告)号：US20230268148A1

公开(公告)日：2023-08-24

申请号：US18309550

申请日：2023-04-28

Applicant: Huawei Digital Power Technologies Co., Ltd. ,  Shanghai Liangxin Electrical Co., Ltd.

Inventor： Jian Shi ,  Chen Song ,  Yang Chang

IPC: H01H19/14 ,  H01H3/38

CPC classification number: H01H19/14 ,  H01H3/38

Abstract: An operation apparatus for a rotary switch and a rotary switch relate to the field of switch technologies. The operation apparatus for a rotary switch includes a motion member and a fastener having an accommodating cavity. The motion member passes through the accommodating cavity, and the motion member is driven to move in the accommodating cavity and can be switched between a lock position and a working position. The lock position restricts rotation of the motion member. When the motion member is in the working position, a release can be reset under action of the motion member. The operation apparatus for the rotary switch provides for reliable reset of the release.

公开(公告)号：US20230249537A1

公开(公告)日：2023-08-10

申请号：US18300674

申请日：2023-04-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wenwu Ma ,  Xiaode Yin

IPC: B60K7/00 ,  B60K1/02

CPC classification number: B60K7/0007 ,  B60K1/02 ,  B60K2001/001

Abstract: In a vehicle drive system, a hybrid drive manner of dual hub drive assemblies and a centralized drive assembly/dual independent drive assemblies are used. When the vehicle travels at a constant speed with a small torque, the dual hub drive assemblies are used to drive the vehicle. When the vehicle accelerates startup or accelerates to overtake, a large torque is required, and the centralized drive assembly/dual independent drive assemblies is/are used to drive the vehicle, or the centralized drive assembly/dual independent drive assemblies and the dual hub drive assemblies are used together to drive the vehicle. Therefore, the vehicle drive system provided uses the hybrid drive manner of dual hub drive assemblies and the centralized drive assembly/dual independent drive assemblies.

公开(公告)号：US11708898B2

公开(公告)日：2023-07-25

申请号：US17710637

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hu Zhong ,  Xueyu Mei ,  Huan Wang

IPC: F16H63/30 ,  F16H55/17 ,  F16H57/023 ,  F16H63/32 ,  F16D23/06 ,  F16D11/00

CPC classification number: F16H63/3043 ,  F16D23/06 ,  F16H55/17 ,  F16H57/023 ,  F16H63/32 ,  F16D2011/002 ,  F16H2055/178 ,  F16H2063/321

Abstract: This application provides a gear shifting mechanism, a gearbox, and a powertrain. The gear shifting mechanism includes a gear, a gear hub, a one-way clutch, and a sliding apparatus. The gear has a first convex wall and a second convex wall that are disposed around a shaft hole. A first toothed structure is disposed at an end of the first convex wall, and a diameter of the second convex wall is less than that of the first convex wall. The gear hub is sleeved on the second convex wall. The one-way clutch is disposed between the gear hub and the second convex wall. The sliding apparatus is sleeved on the gear hub, and the sliding apparatus is capable of sliding in a direction toward or away from the gear. The gear shifting mechanism can improve stability for transmitting a gear shifting power, thereby improving driving performance of an electric vehicle.

公开(公告)号：US20230231518A1

公开(公告)日：2023-07-20

申请号：US18186022

申请日：2023-03-17

Applicant: Huawei Digital Power Technologies Co., Ltd. ,  SPIC Qinghai Photovoltaic Industry Innovation Center Co.,Ltd.

Inventor： Jianqiang Wang ,  Yuandong Meng ,  Song Wan ,  Yanzhong Zhang ,  Feng Chong ,  Hualong Fan ,  Jiajia He ,  Shaopan Hou ,  Jie Zhang

IPC: H02S50/15

CPC classification number: H02S50/15

Abstract: A method and an apparatus (400) for performing fault detection, are provided includes: controlling, by a power station management system in a preset photovoltaic module order by using an inverter connected to a current to-be-detected photovoltaic module, the current to-be-detected photovoltaic module to be in a target status, and when determining that the current to-be-detected photovoltaic module is in the target status, controlling a mobile image capturing terminal to collect image data of the current to-be-detected photovoltaic module (S201), where the image data is used to detect a fault status of the current to-be-detected photovoltaic module; and when determining that the mobile image capturing terminal obtains the image data of the current to-be-detected photovoltaic module through collection, continuing, by the power station management system, to control, in the preset photovoltaic module order by using an inverter connected to a next to-be-detected photovoltaic module.

公开(公告)号：US20230223797A1

公开(公告)日：2023-07-13

申请号：US18180094

申请日：2023-03-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Li He ,  Baoshan Wu ,  Donghao Wu ,  Chenglong Wu

IPC: H02J50/90 ,  H02J50/40 ,  H02J7/00 ,  H02J50/10 ,  H05K7/20

CPC classification number: H02J50/90 ,  H02J50/402 ,  H02J7/0044 ,  H02J7/0013 ,  H02J50/10 ,  H05K7/20127

Abstract: This disclosure discloses a wireless charging device and a wireless charging base. The wireless charging device includes an alignment mechanism and at least two transmit coils. Each transmit coil wirelessly charges a corresponding electronic device. Charging regions formed by the transmit coils on a charging plane are interconnected or overlap. The alignment mechanism drives each transmit coil to be aligned with a receive coil in a corresponding electronic device, and the transmit coil wirelessly charges the corresponding electronic device. The charging regions formed by the transmit coils are contiguous, and the charging regions covered by the transmit coils have no spacing in between and form a contiguous charging plane, in other words, a plurality of transmit coils form a relatively large charging region.

公开(公告)号：US11699957B2

公开(公告)日：2023-07-11

申请号：US17826482

申请日：2022-05-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wei Zhang ,  Zhaoxue Cui ,  Ningbo Feng

IPC: H01F3/14 ,  H02M3/335 ,  B60L50/60 ,  B60R16/033 ,  H02J7/00 ,  H02J7/02 ,  H02M7/219

CPC classification number: H02M3/33573 ,  B60L50/60 ,  B60R16/033 ,  H02J7/0013 ,  H02J7/02 ,  H02M3/33576 ,  H02M7/219 ,  B60L2210/10 ,  H02J2207/20

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 to 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.

公开(公告)号：US11699906B2

公开(公告)日：2023-07-11

申请号：US17556045

申请日：2021-12-20

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xinyu Yu ,  Kai Xin

IPC: H02J3/38 ,  H02M7/44 ,  H02S40/32

CPC classification number: H02J3/381 ,  H02M7/44 ,  H02S40/32 ,  H02J2300/24

Abstract: A string inverter control method includes: in a process of performing IV curve scanning on one or more first direct current/direct current step-up circuits, controlling a change of an output voltage of one or more second direct current/direct current step-up circuits on which the IV curve scanning does not need to be performed, where a change trend of the output voltage and a change trend of an input voltage of the one or more first direct current/direct current step-up circuits on which the IV curve scanning is performed present a non-strictly monotonically increasing relationship. Therefore, for the direct current/direct current step-up circuit on which the IV curve scanning is performed, a voltage difference between two ends of the direct current/direct current step-up circuit is not always in a relatively high state, so that a ripple current on an input inductor in the direct current/direct current step-up circuit can be reduced.

公开(公告)号：US11695335B2

公开(公告)日：2023-07-04

申请号：US17188859

申请日：2021-03-01

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Dianbo Fu ,  Dong Chen

IPC: H02M3/155 ,  H02M1/00 ,  H02M3/07 ,  H02M3/158 ,  H03K17/12 ,  H03K17/74 ,  H03K17/30 ,  H02M1/088

CPC classification number: H02M3/155 ,  H02M3/07 ,  H02M3/158 ,  H03K17/122 ,  H03K17/127 ,  H03K17/74 ,  H02M1/0051 ,  H02M1/0058 ,  H02M1/088 ,  H03K2017/307 ,  H03K2217/0036

Abstract: A method comprises configuring a power converter to operate as a boost converter, the power converter comprising a low side switch and a high side switch, during a first dead time after turning off the low side switch and before turning on the high side switch, configuring the power converter such that a current of the power converter flows through a high speed diode, and after turning on the high side switch, configuring the power converter such that the current of the power converter flows through a low forward voltage drop diode.