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公开(公告)号：US20250010730A1
公开(公告)日：2025-01-09
申请号：US18763284
申请日：2024-07-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang CHENG , Ningbo FENG , Wei MO
Abstract: A direct current charging apparatus, a powertrain, and an electric vehicle. The direct current charging apparatus which includes a direct current charging interface, a switch module, and a direct current voltage conversion module is configured to charge power battery of the electric vehicle. The direct current charging interface is configured to connect a positive electrode and a negative electrode of a power supply apparatus and a positive electrode and a negative electrode of the power battery to form a charging loop. The switch module is configured to connect or disconnect the charging loop. The direct current voltage conversion module is configured to output a preset direct current voltage to the positive electrode and the negative electrode of the power supply apparatus. When the charging loop between the power battery and a charging pile is connected again, charging can be resumed without re-swiping card/re-scanning QR code.
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公开(公告)号：US20230075867A1
公开(公告)日：2023-03-09
申请号：US17889695
申请日：2022-08-17
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang CHENG , Chunyang LIU
IPC: B60L53/22
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：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：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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Patent Agency Ranking
公开(公告)号：US20240001788A1
公开(公告)日：2024-01-04
申请号：US18467801
申请日：2023-09-15
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang CHENG , Feng SU , Yu MA
CPC classification number: B60L53/22 , B60L53/66 , B60L2210/30 , B60L50/60 , B60L2210/10 , B60L53/62
Abstract: A charger, a soft-start method, an electric vehicle, and a charging system. The charger includes a control module, a DC-DC conversion circuit, and a first capacitor. When the electric vehicle is charged, the control module in the charger may first control the DC-DC conversion circuit to charge the first capacitor by using battery electric energy output by a battery system, and after determining that a capacitance voltage of the first capacitor reaches a first threshold voltage, indicate a charging pile to output charging electric energy. A soft-start circuit does not need to be disposed in a soft-start process of the charger, which helps simplify a circuit of the charger and implement a miniaturization design of the charger.
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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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7.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：US20240149859A1
公开(公告)日：2024-05-09
申请号：US18415479
申请日：2024-01-17
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Yang CHENG , Yi CAO , Jingzhou WEI , Wenwu MA , Hu ZHONG
CPC classification number: B60W10/08 , B60W10/02 , B60W10/06 , B60W2510/244
Abstract: An electric vehicle drive system and an electric vehicle are provided. The electric vehicle drive system includes a first powertrain, a second powertrain, a first transmission system, a second transmission system, and a battery system. The first powertrain is connected to the first transmission system. The second powertrain is connected to the second transmission system. The first powertrain includes a generator and an engine, and the engine drives the generator to generate electric energy. The generator drives the first-side wheels by using the first transmission system. The second powertrain drives second-side wheels by using the second transmission system. The battery system is connected to the generator and the second powertrain, and is configured to receive the electric energy output by the generator, and output stored electric energy to at least one of the second powertrain or the generator.
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公开(公告)号：US20230058643A1
公开(公告)日：2023-02-23
申请号：US17980812
申请日：2022-11-04
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaofeng YAO , Yang CHENG , Guozhao DUAN
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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