-
公开(公告)号：US20240039319A1
公开(公告)日：2024-02-01
申请号：US18485006
申请日：2023-10-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaoxi Liu , Zhiwu Xu , Lin Li
CPC classification number: H02J7/00714 , H02J3/381 , H02J3/32 , H02J2207/20 , H02J2300/24
Abstract: A battery charging and discharging system includes: the battery charging and discharging circuit and a control circuit. The control circuit includes a processor. The processor is configured to: determine a first target current value corresponding to each of at least two feedback controls based on sampled data corresponding to the at least two feedback controls; determine a second target current value based on the first target current value corresponding to each of the at least two feedback controls; and comprehensively balance a first target current value of each feedback control, to adaptively determine a second target current value. A drive signal is generated based on the second target current value, and the drive signal is output to the DC/DC converter.
-
公开(公告)号：US20240006886A1
公开(公告)日：2024-01-04
申请号：US18456205
申请日：2023-08-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Lin Li , Zhipeng Wu , Yanzhong Zhang
CPC classification number: H02J3/32 , H02J3/144 , H02J3/472 , H02J2203/20
Abstract: Embodiments of this application provide an energy storage system and a black start method. The energy storage system includes a black start controller, a battery module, a first converter, and a system control unit. The black start controller outputs a black start signal, the battery module generates an output voltage based on the black start signal, and the first converter supplies power to the system control unit based on the black start signal and the output voltage of the battery module, to enable the system control unit to implement black start of the energy storage system based on the black start signal.
-
公开(公告)号：US20240250535A1
公开(公告)日：2024-07-25
申请号：US18585771
申请日：2024-02-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Liuliu Huang , Lin Li
CPC classification number: H02J3/32 , H02J3/46 , H02J2300/24
Abstract: N direct current coupling units are configured to provide electric energy to a load. Each of the N direct current coupling units includes an energy storage unit. The energy storage unit is configured to store electric energy or supply power to the load. Herein, N is a positive integer. A primary controller is configured to determine an expected discharge power value of energy storage units in the N direct current coupling units, where the expected discharge power value is a power value that indicates power that needs to be discharged by the energy storage units in the N direct current coupling units, and determine actual discharge power of the energy storage unit in each direct current coupling unit based on the expected discharge power value and first characteristic information of the energy storage unit in the direct current coupling unit.
-
4.发明授权公开(公告)号：US11977110B2
公开(公告)日：2024-05-07
申请号：US17667297
申请日：2022-02-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Haibin Guo , Huan Zhao , Zhiwu Xu , Lin Li
CPC classification number: G01R31/14 , H02M1/0003
Abstract: A converter system includes a plurality of converters, a sampling circuit, and a control circuit. The plurality of converters are connected in parallel. Each converter includes a detection circuit which includes a first switch and at least two resistors. The first switch is connected in parallel with one of the at least two resistors. The control circuit control the sampling circuit to collect a first voltage and a second voltage, where the first voltage is a voltage that is between a second bus and a ground cable and that is collected by the sampling circuit when first switches in detection circuits of a first quantity are in a turn-on state, the second voltage is a voltage that is between the second bus and the ground cable and that is collected by the sampling circuit when first switches in detection circuits of a second quantity are in a turn-on state.
-
公开(公告)号：US20230402863A1
公开(公告)日：2023-12-14
申请号：US18455149
申请日：2023-08-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: H02J7/00
CPC classification number: H02J7/0049 , H02J7/007182 , H02J7/0019 , H02J2300/24
Abstract: An energy system mainly includes a charging and discharging control apparatus and an energy storage battery. When a battery level is not greater than a discharging level threshold and a charging current of the energy storage battery is less than a charging current threshold, the charging and discharging control apparatus may control the energy storage battery to stop charging and discharging. When the battery level is not less than a charging level threshold and a discharging current of the energy storage battery is less than a discharging current threshold, the charging and discharging control apparatus may also control the energy storage battery to stop charging and discharging.
-
Patent Agency Ranking
公开(公告)号：US20230076934A1
公开(公告)日：2023-03-09
申请号：US17940402
申请日：2022-09-08
Applicant: Huawei Digital Power Technologies Co, Ltd.
Inventor： Lin Li , He Zhou , Haibin Guo
IPC: G01R31/387 , G01R31/374 , H02J7/00
Abstract: An energy storage system includes a control apparatus and one or more battery sub-arrays. Each battery sub-array includes one or more energy storage racks. Each energy storage rack includes one or more battery packs. The control apparatus is configured to: determine that parameter calibration needs to be performed on a first energy storage rack in a first battery sub-array; when the first energy storage rack meets a preset condition, increase a weight of the first energy storage rack in the first battery sub-array; and after each battery pack in the first energy storage rack is fully charged or remaining power of the battery pack is fully discharged, perform calibration on a parameter of the battery pack.
-
7.发明公开公开(公告)号：US20240030724A1
公开(公告)日：2024-01-25
申请号：US18477029
申请日：2023-09-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Lin Li , Zhipeng Wu , Bo Yu
IPC: H02J7/00
CPC classification number: H02J7/0016 , H02J7/005 , H02J7/0048 , H02J7/00712 , H02J2207/20
Abstract: In accordance with an embodiment, and energy storage system includes a battery cluster, a power conversion circuit, and a controller. An output end of the battery cluster is connected to a first terminal of the power conversion circuit, and a second terminal of the power conversion circuit is connected to an output end of the energy storage system. Each battery cluster includes at least two energy storage modules connected in series, each energy storage module includes one bypass circuit and one battery pack, and each battery pack includes a plurality of batteries. The controller controls each bypass circuit based on a first parameter value of each battery pack, so that electricity quantities of battery packs are balanced.
-
公开(公告)号：US20230400520A1
公开(公告)日：2023-12-14
申请号：US18447043
申请日：2023-08-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Lin Li , Zhipeng Wu
IPC: G01R31/3835 , G01R31/396 , H02J7/00
CPC classification number: G01R31/3835 , G01R31/396 , H02J7/0013 , H02J7/0048
Abstract: This application provides an energy storage system and an energy storage system detection method. The method includes: A first control unit sends a first instruction to a first battery cluster to change an output voltage of the first battery cluster. The first control unit obtains a first input voltage and a second input voltage that are of each of a plurality of power conversion units. The first control unit determines, based on the first instruction, and the first input voltage and the second input voltage that are of each of the plurality of power conversion units, whether each of the plurality of power conversion units is connected to the first battery cluster. On this basis, whether there is a connection error in the energy storage system is determined. Then, a security risk in the system is eliminated.
-
公开(公告)号：US20230396068A1
公开(公告)日：2023-12-07
申请号：US18453678
申请日：2023-08-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Lin Li , Zhiwu Xu , Haibin Guo
CPC classification number: H02J3/38 , H02J3/32 , H02J2300/26
Abstract: A power conversion module includes a power transistor and a sampling control unit. The sampling control unit determines a given duty cycle of the power conversion module based on the bus reference duty cycle, the power supply reference duty cycle, and the current limiting reference duty cycle, and controls, based on the given duty cycle, the power transistor to work, to control the direct current bus to have a target bus voltage and enable the power conversion module to run at the maximum power point. In this application, the direct current bus can be stabilized and the power conversion module can be controlled to run at the maximum power point.
-
公开(公告)号：US11936294B2
公开(公告)日：2024-03-19
申请号：US17946227
申请日：2022-09-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M3/07 , H02M1/0095 , H02J2300/24 , H02M7/4837
Abstract: A three-level converter includes a high-voltage side unit, a low-voltage side unit, a flying capacitor, a first switch to a fourth switch, and a control unit. When a voltage of the flying capacitor falls outside a safe target voltage range, the control unit may control the third switch and the fourth switch to be normally open, and control, based on the voltage of the flying capacitor and a voltage of the low-voltage side unit, each of the first switch and the second switch to be turned on or off, so that the voltage of the flying capacitor falls within the target voltage range. Alternatively, the control unit may control the first switch and the second switch to be normally open, and control, based on the voltage of the flying capacitor and a voltage of the low-voltage side unit.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.018 seconds)
