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1.发明公开公开(公告)号：US20240235252A9
公开(公告)日：2024-07-11
申请号：US18401455
申请日：2023-12-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shijiang Yu , Zhipeng Wu , He Zhou , Lei Shi , Yang Hu
CPC classification number: H02J9/068 , H02J3/0012 , H02J3/32 , H02J7/35 , H02J9/061 , H02J2207/20 , H02J2300/24
Abstract: This disclosure provides an energy storage apparatus, an energy storage apparatus control method, and a photovoltaic system. The energy storage apparatus includes: a plurality of battery clusters, a plurality of conversion units, a start unit, and a controller. The controller includes a plurality of control units. The start unit is configured to: after receiving a start signal, control a control switch in at least one battery cluster to close, to start a control unit corresponding to the battery cluster. The control unit is configured to: determine, based on a state of the control switch in the battery cluster, whether a black start mode is on; and when determining that the black start mode is on, control a DC-DC converter in the corresponding conversion unit to release electric energy stored in a battery pack in the corresponding battery cluster, to energize a direct current bus.
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2.发明公开公开(公告)号：US20240077897A1
公开(公告)日：2024-03-07
申请号：US18506619
申请日：2023-11-10
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hui Ma , Zhipeng Wu , Hao Meng , Zhirun Li
CPC classification number: G05D23/20 , H02J3/32 , H02J3/38 , H02J7/0013 , H02J7/0047 , H02J7/007192 , H02J7/35 , H02J2207/20 , H02J2300/24
Abstract: In accordance with an embodiment, an energy storage system includes energy storage container that a temperature control system, a battery cluster, and a controller. The controller determines a specified temperature of the temperature control system corresponding to a maximum difference between an available capacity of the battery cluster and a power consumption of the temperature control system as a target temperature. The determination of the specified temperature is based on: a correspondence between the available capacity of the battery cluster and a plurality of different specified temperatures in a specified temperature set of the temperature control system, and a correspondence between the power consumption of the temperature control system and the plurality of different specified temperatures in the specified temperature set of the temperature control system. The temperature control system is configured to adjust a temperature inside the energy storage container to the target temperature.
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3.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.
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4.发明公开公开(公告)号：US20240022077A1
公开(公告)日：2024-01-18
申请号：US18477563
申请日：2023-09-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shijiang Yu , Jianshan Li , Chunlei Zhang , Zhipeng Wu , Lei Shi
CPC classification number: H02J3/32 , H02J9/06 , H02J3/38 , H02J2300/24
Abstract: An energy storage apparatus, including a plurality of battery modules, a switch unit, a start unit; and an electrical energy output port. The energy storage apparatus is configured for use in a photovoltaic power generation system having a plurality of photovoltaic modules, a direct current-to-direct current (DC/DC) converter, and a direct current-to-alternating current (DC/AC) converter. The plurality of battery modules is separately connected to the start unit and the switch unit, and the plurality of battery modules are configured to, when the start unit receives a start signal, control the switch unit to be turned on. The energy storage apparatus is configured to, in response to the switch unit being turned on, output electrical energy of the plurality of battery modules through the electrical energy output port, and, in response to the switch unit being turned off, disconnect the plurality of battery modules from the electrical energy output port.
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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.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240136850A1
公开(公告)日：2024-04-25
申请号：US18401455
申请日：2023-12-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shijiang Yu , Zhipeng Wu , He Zhou , Lei Shi , Yang Hu
CPC classification number: H02J9/068 , H02J3/0012 , H02J3/32 , H02J7/35 , H02J9/061 , H02J2207/20 , H02J2300/24
Abstract: This disclosure provides an energy storage apparatus, an energy storage apparatus control method, and a photovoltaic system. The energy storage apparatus includes: a plurality of battery clusters, a plurality of conversion units, a start unit, and a controller. The controller includes a plurality of control units. The start unit is configured to: after receiving a start signal, control a control switch in at least one battery cluster to close, to start a control unit corresponding to the battery cluster. The control unit is configured to: determine, based on a state of the control switch in the battery cluster, whether a black start mode is on; and when determining that the black start mode is on, control a DC-DC converter in the corresponding conversion unit to release electric energy stored in a battery pack in the corresponding battery cluster, to energize a direct current bus.
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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.
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公开(公告)号：US11757285B2
公开(公告)日：2023-09-12
申请号：US17743593
申请日：2022-05-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Chang Hei , Zhipeng Wu , Shuchao Wang
IPC: H02J3/32 , G06Q10/0631 , H02J3/38 , G05B19/042
CPC classification number: H02J3/32 , G05B19/042 , G06Q10/06312 , H02J3/381 , G05B2219/2639 , H02J2300/20
Abstract: An example energy storage system and a related method are disclosed. In the energy storage system, a controller obtains information about user equipment, and then controls a converter and a battery group based on the information about the user equipment, to supply electric energy to an electric device or receive electric energy from a power sourcing device. In this way, the energy storage system can provide reasonable power scheduling, thereby improving utilization of the energy storage system.
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公开(公告)号：US12199566B2
公开(公告)日：2025-01-14
申请号：US17896730
申请日：2022-08-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Song Wan , Yongbing Gao , Xun Wang , Yanzhong Zhang , Zhipeng Wu
Abstract: A linkage protection system includes an inverter, an anti-potential-induced degradation (PID) apparatus, and an insulation-monitoring apparatus. The anti-PID apparatus is configured to inject a voltage into an input end or an output end of the inverter, to increase or decrease a voltage-to-earth of a photovoltaic system. The insulation-monitoring apparatus is configured to inject an insulation-monitoring voltage into a direct current (DC) side or an alternating current (AC) side of the inverter. The anti-PID apparatus and the insulation-monitoring apparatus directly or indirectly communicate with each other, to learn of information about whether a peer apparatus is operating, and perform linkage control. The anti-PID apparatus and the insulation-monitoring apparatus operate in different time periods.
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10.发明公开公开(公告)号：US20230420956A1
公开(公告)日：2023-12-28
申请号：US18464909
申请日：2023-09-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhipeng Wu , Lin Li , He Zhou , Yanzhong Zhang , Jie Kong
CPC classification number: H02J7/0016 , H02J7/0019 , H02J3/32 , H02J3/38 , H02J7/00712 , H02J2207/20 , H02J2300/24
Abstract: An energy storage system includes a battery cluster, a direct current converter, a controller, and at least one power conversion system. The energy storage system includes at least one direct current branch. The direct current branch includes a battery cluster and a direct current converter that are connected to each other. The direct current converter performs direct current conversion on a direct current provided by the battery cluster. Each battery cluster includes at least two energy storage modules that are connected in series. The controller controls the first equalization circuit, to balance electricity quantities of battery modules in the battery cluster, and allocates operating power to the power conversion system and the direct current converter. In this solution, impact of bucket effect on the energy storage system is reduced, so that a battery capacity can be more fully utilized.
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