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公开(公告)号：US20230223767A1
公开(公告)日：2023-07-13
申请号：US18180649
申请日：2023-03-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shuhao Deng , Denghai Pan , Hong Tuo
CPC classification number: H02J7/0024 , H02J7/0047 , H01M10/425 , H01M10/482 , H02J7/345 , H02J7/0029 , H01M2010/4271
Abstract: The battery includes a cell pack. The detection circuit includes a first switch unit, a second switch unit, a discharge unit, a sampling unit, an energy storage unit, and a controller. A first terminal of the first switch unit is connected to a first terminal of the cell pack. A second terminal of the first switch unit is connected to a second terminal of the cell pack after being connected in series to the energy storage unit. The second switch unit is connected in parallel to the energy storage unit after being connected in series to the discharge unit. The discharge unit discharges the energy storage unit. The sampling unit is connected in parallel to the energy storage unit. The sampling unit sends an obtained sampling signal to the controller.
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公开(公告)号：US12065045B2
公开(公告)日：2024-08-20
申请号：US17872147
申请日：2022-07-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Quanxi Lin , Tong Wang , Hong Tuo
CPC classification number: B60L50/52 , B60L50/60 , H02M3/158 , B60L2210/10 , B60L2240/527
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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公开(公告)号：US20230139157A1
公开(公告)日：2023-05-04
申请号：US18148437
申请日：2022-12-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hong Tuo , Yi Cai , Changlei Du
Abstract: A system and method for battery charge/discharge equalization, the method including performing, for each battery module of M battery modules of a battery component, determining, by a control unit of the respective battery module, a reference value of a power parameter, wherein M is a positive integer greater than 1, where each battery module of the M battery modules includes the control unit, a direct current-direct current (DCDC) converter, and an energy storage unit, wherein the control unit is electrically connected to the DCDC converter, and the DCDC converter of each battery module is electrically connected to a load or a power supply, and where the reference value is associated with equalizing charging/discharging of the M battery modules, and controlling, by the control unit of the battery module using the DCDC converter, an value of the power parameter to be equal to the reference value.
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