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公开(公告)号：US20240258591A1
公开(公告)日：2024-08-01
申请号：US18631638
申请日：2024-04-10
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hong TUO , Yi CAI , Wenguang LI , Baoguo CHEN
CPC classification number: H01M10/4264 , H02J7/0068 , H01M2010/4271 , H01M2220/10 , H02J2207/20
Abstract: A battery management system includes a sampling control unit, a DC/DC conversion unit, and an energy storage unit. When the battery pack needs to be heated, based on battery parameters of the battery pack and a voltage and a current limit value of the DC/DC conversion unit, the sampling control unit may control, in each of at least one consecutive first cycle, the battery pack to discharge to the energy storage unit by using the DC/DC conversion unit; control, in each of at least one consecutive second cycle, the energy storage unit to charge the battery pack by using the DC/DC conversion unit; and control, in the at least one consecutive first cycle and the at least one consecutive second cycle, an average charge/discharge current value of the battery pack to be less than or equal to a charge/discharge current limit value.
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Patent Agency Ranking
公开(公告)号：US20230032849A1
公开(公告)日：2023-02-02
申请号：US17875913
申请日：2022-07-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hong TUO , Hua YU , Quanxi LIN , Tianhui ZHANG
Abstract: A battery module is configured to discharge to a terminal device, and the battery module includes: a detection and control unit, a buck-boost unit, and a cell pack. The detection and control unit is configured to: receive a terminal-required voltage sent by the terminal device; and control the buck-boost unit to discharge to the terminal device through the cell pack based on the terminal-required voltage.
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公开(公告)号：US20240235386A9
公开(公告)日：2024-07-11
申请号：US18489971
申请日：2023-10-19
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M3/01 , H02M1/0077 , H02M3/1563 , H02M3/338 , H02M7/2176
Abstract: A resonant converter, a control method of a resonant converter, and a related device. The resonant converter includes a control circuit, a drive circuit, and a switch circuit. The control circuit is configured to generate, based on a target output electrical parameter of the resonant converter, a first pulse signal and a second pulse signal that have different frequencies. The control circuit is further configured to: obtain a first drive signal based on the first pulse signal and the second pulse signal and send the first drive signal to the drive circuit. The drive circuit is configured to: convert the first drive signal into one or more second drive signals and send the one or more second drive signals to the switch circuit, to turn on or off a switch component in the switch circuit.
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公开(公告)号：US20240136922A1
公开(公告)日：2024-04-25
申请号：US18489971
申请日：2023-10-18
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M3/01 , H02M1/0077 , H02M3/1563 , H02M3/338 , H02M7/2176
Abstract: A resonant converter, a control method of a resonant converter, and a related device. The resonant converter includes a control circuit, a drive circuit, and a switch circuit. The control circuit is configured to generate, based on a target output electrical parameter of the resonant converter, a first pulse signal and a second pulse signal that have different frequencies. The control circuit is further configured to: obtain a first drive signal based on the first pulse signal and the second pulse signal and send the first drive signal to the drive circuit. The drive circuit is configured to: convert the first drive signal into one or more second drive signals and send the one or more second drive signals to the switch circuit, to turn on or off a switch component in the switch circuit.
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公开(公告)号：US20230080754A1
公开(公告)日：2023-03-16
申请号：US17990952
申请日：2022-11-21
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hong TUO , Hua YU , Jiaolong LAI
IPC: H02J7/00
Abstract: A charging control method, an energy storage module, and a powered device. The method includes: obtaining a sampling voltage of an input port of a DC-DC unit; determining a charging parameter of the DC-DC unit for an energy storage unit based on the sampling voltage of the input port of the DC-DC unit and a preset constant voltage of the input port of the DC-DC unit, where a sum of a charging electricity quantity reflected by the charging parameter and a charging electricity quantity of a load is equal to a maximum output electricity quantity of an input source; and after the charging parameter is determined, charging the energy storage unit by using the charging electricity quantity reflected by the charging parameter.
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公开(公告)号：US20230026820A1
公开(公告)日：2023-01-26
申请号：US17872147
申请日：2022-07-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Quanxi LIN , Tong WANG , Hong TUO
Abstract: A vehicle-mounted power supply system includes a sampling circuit, a voltage comparison control circuit, a power conversion circuit, and a motor. The sampling circuit is configured to obtain an output voltage value of an output terminal of the power conversion circuit. The voltage comparison control circuit is configured to output a first power adjustment signal to the power conversion circuit when the output voltage value is less than a first target voltage value. The power conversion circuit is configured to increase an output voltage to a first target voltage based on the first power adjustment signal, to output the output voltage to the motor and increase an input voltage of the motor. When a voltage of a power supply is low, the input voltage of the motor can be maintained at a required level.
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