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Patent Agency Ranking
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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公开(公告)号：US20240372457A1
公开(公告)日：2024-11-07
申请号：US18774019
申请日：2024-07-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yi CAI , Hua YU , Changlei DU , Xiaoyu LIU
Abstract: The embodiments provide a backplane and a power conversion method and apparatus. The power conversion apparatus includes a first power module, a second power module, and a controller. Each power module includes a signal processor and a corresponding power converter. The signal processor in the first power module sends a generated first carrier signal to the signal processor in the second power module. The signal processor in the second power module determines a second carrier signal by using a period of the first carrier signal, to drive the power converter in the first power module by using the first carrier signal, and drive the power converter in the second power module by using the second carrier signal. This improves operating efficiency of a device in a power conversion process and reduces a power loss.
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公开(公告)号：US20240243577A1
公开(公告)日：2024-07-18
申请号：US18413296
申请日：2024-01-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Koujie DONG , Guozhuang BAI , Yi CAI , Huanmao XIE
CPC classification number: H02J3/0075 , H02J3/144 , H02J3/46 , H02J2300/24
Abstract: A power conversion device includes a power conversion device includes an auxiliary power supply, a first load, a power conversion circuit, and a controller. When an output voltage of the auxiliary power supply in operation is greater than or equal to a first voltage threshold, the controller controls the first load to be connected to the power conversion device, so that the output voltage of the auxiliary power supply decreases. When the output voltage of the auxiliary power supply is greater than or equal to a second voltage threshold after the first load is connected to the power conversion device, the controller controls the first load to be disconnected from the power conversion device, and controls the output voltage of the auxiliary power supply to be a first target output voltage. The first voltage threshold is less than the second voltage threshold.
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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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