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1. 发明公开

EP4373232A1 HEAT DISSIPATION APPARATUS AND ELECTRIC POWER DEVICE 审中-公开
公开(公告)号：EP4373232A1
公开(公告)日：2024-05-22
申请号：EP23209042.3
申请日：2023-11-10
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： MENG, Hao , YANG, Qingsong
IPC分类号： H05K7/20
CPC分类号： Y02D10/00 , H05K7/20909
摘要： Provided are a heat dissipation apparatus and an electric power device. The heat dissipation apparatus includes at least two heating components, at least two fans, and at least two isolation components. Heat dissipation channels are disposed inside the at least two heating components, and a fan is provided in each heat dissipation channel. An isolation component is coupled to an air inlet and/or an air outlet of the heat dissipation channel. The isolation component may isolate an air inlet or air outlet of each heating component from an air inlet or air outlet of another heating component, so as to avoid the following case: Heat dissipation efficiency of the heat dissipation apparatus is reduced because a loop is formed between a heat dissipation channel in which a working fan is located and a heat dissipation channel in which a non-working fan is located.

2. 发明公开

EP4372947A1 PHOTOVOLTAIC SYSTEM AND CONTROL METHOD 审中-公开
公开(公告)号：EP4372947A1
公开(公告)日：2024-05-22
申请号：EP21953699.2
申请日：2021-08-17
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： YAO, Xiaofeng , GU, Guilei
IPC分类号： H02J3/38 , H02S40/32
CPC分类号： Y02E10/56 , H02S40/32 , H02J3/38
摘要： This application discloses a photovoltaic system and a control method. The system includes a plurality of first converters, a second converter, an inverter, and a controller. The controller obtains a sum of input voltages of the plurality of first converters connected in series to each other; when the sum of the input voltages of the plurality of first converters is greater than a first voltage, adjusts the output voltage of the first converter, so that the sum of the input voltages of the first converters is less than or equal to the first voltage; and when the sum of the input voltages of the first converters is less than a second voltage, adjusts an output voltage of the second converter, so that the output voltage of the second converter is greater than or equal to the second voltage, and the first converters keep in a state of adjusting the input voltages based on power. According to the photovoltaic system provided in this application, a quantity of photovoltaic modules in a photovoltaic string can be flexibly configured, so that a photovoltaic module configuration in the photovoltaic string is not limited by an input voltage limit of the inverter, and an overall energy yield of the photovoltaic system is increased.

3. 发明授权

EP4071957B1 METHOD AND APPARATUS FOR CONTROLLING POWER SUPPLY SYSTEM, AND SYSTEM 审中-实审
公开(公告)号：EP4071957B1
公开(公告)日：2024-05-22
申请号：EP22166295.0
申请日：2022-04-01
IPC分类号： H02J3/46 , H02J3/38 , H02J1/10
CPC分类号： Y02E10/56 , H02J2300/2620200101 , H02J3/381 , H02J1/10 , H02J3/46 , H02J2300/2420200101

4. 发明授权

EP3771065B1 PHOTOVOLTAIC POWER GENERATION INVERTER SYSTEM 有权
公开(公告)号：EP3771065B1
公开(公告)日：2024-05-22
申请号：EP19862695.4
申请日：2019-09-20
IPC分类号： H02J3/38 , H02J7/34 , H02J7/35
CPC分类号： Y02E10/56 , H02J3/38 , H02J2300/2420200101 , H02J7/35 , H02J7/34

5. 发明公开

EP4369588A1 POWER UNIT AND SOLID-STATE TRANSFORMER 审中-公开
公开(公告)号：EP4369588A1
公开(公告)日：2024-05-15
申请号：EP22852104.3
申请日：2022-08-01
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： REN, Biao , HUANG, Zhuyong
IPC分类号： H02M3/335
摘要： This application provides a power unit and a solid-state transformer, to supply power to a control module in the power unit by using a first subsidiary power supply circuit and a second subsidiary power supply circuit and improve operation reliability of the power unit. The power unit may include the first subsidiary power supply circuit and a first power circuit. The first power circuit includes an alternating current/alternating current power main circuit and a first control module. The alternating current/alternating current power main circuit is coupled to a grid power supply system to supply power to the alternating current/alternating current power main circuit through the grid power supply system. An input end of the first subsidiary power supply circuit is coupled to a bus of the alternating current/alternating current power main circuit. An output end of the first subsidiary power supply circuit is coupled to the first control module. The first subsidiary power supply circuit adjusts a voltage of the bus of the alternating current/alternating current power main circuit to a direct current voltage required by the first control module and outputs the direct current voltage to the first control module.

6. 发明公开

EP4369489A1 BOX FOR ENERGY STORAGE DEVICE, ENERGY STORAGE DEVICE AND ENERGY STORAGE SYSTEM 审中-公开
公开(公告)号：EP4369489A1
公开(公告)日：2024-05-15
申请号：EP23844519.1
申请日：2023-08-15
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： WANG, Yongling , JIANG, Zhishun , ZHANG, Chuang , YU, Shijiang , LI, Malin
IPC分类号： H01M50/244 , H02B1/46
CPC分类号： Y02E60/10
摘要： This application provides a box for an energy storage apparatus, an energy storage apparatus, and an energy storage system. The box includes four columns, three side plates, a partition plate, a bottom plate, and a sealing door. The three side plates, the partition plate, and the bottom plate are fastened by the four columns and form a closed second accommodating region with the sealing door through enclosure, and the four columns and the partition plate form an open first accommodating region through enclosure. In the box provided in this application, a height of the partition plate is reduced to form the recessed open first accommodating region for accommodating an external assembly of the energy storage apparatus. This not only can improve heat dissipation efficiency of the energy storage apparatus, but also can ensure standardization of an overall size of the energy storage apparatus; and facilitate reducing space used for stacking of a plurality of energy storage apparatuses or an occupied area used for an adjacent arrangement, thereby increasing energy storage density of the energy storage system and reducing construction costs.

7. 发明公开

EP4365012A1 CHARGING SYSTEM AND ELECTRIC VEHICLE 审中-公开
公开(公告)号：EP4365012A1
公开(公告)日：2024-05-08
申请号：EP23203967.7
申请日：2022-01-20
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： ZHANG, Xueliang , CHENG, Yang
IPC分类号： B60L53/24
CPC分类号： B60L53/24 , Y02T10/70
摘要： This application provides a charging system and an electric vehicle. The charging system includes a motor control unit (MCU) and a first inductor. A first bridge arm in the MCU and the first inductor constitute a voltage conversion circuit. When a power supply voltage is less than a minimum charging voltage of a power battery, the MCU may perform boost conversion on the power supply voltage by using the voltage conversion circuit, and output the power supply voltage obtained after boost conversion to the power battery as a first output voltage, where the first output voltage is not less than the minimum charging voltage. In this application, space occupied by the charging system and costs of the charging system can be reduced while the charging system is used to perform boost conversion on the power supply voltage.

8. 发明公开

EP4362285A1 ROTOR, MOTOR, AND VEHICLE 审中-公开
公开(公告)号：EP4362285A1
公开(公告)日：2024-05-01
申请号：EP23205151.6
申请日：2023-10-23
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： HUANG, Weihua , LAN, Binan , CAO, Chao
IPC分类号： H02K1/276
CPC分类号： Y02T10/64 , H02K1/2766
摘要： This application discloses a rotor, a motor, and a vehicle. The rotor includes a central core, a plurality of peripheral cores, and a sleeve. The plurality of peripheral cores and the central core are always accommodated in the sleeve. Each peripheral core is spaced apart from the central core to form a first separation gap, a second separation gap, and a third separation gap that communicate with each other. The first separation gap and the second separation gap are respectively configured to accommodate a first permanent magnet and a second permanent magnet. The first permanent magnet and the second permanent magnet are respectively spaced apart from the sleeve to form a first magnetic isolation gap and a second magnetic isolation gap. Each peripheral core is provided with an open slot for accommodating a third permanent magnet and a fourth permanent magnet. The third permanent magnet and the fourth permanent magnet are respectively spaced apart from the sleeve to form a third magnetic isolation gap and a fourth magnetic isolation gap, or spaced apart from an end wall of the open slot to form a first magnetic isolation slot and a second magnetic isolation slot. The rotor in this application can reduce magnetic leakage, and the peripheral core is of an integral structure, which facilitates assembly of the rotor.

9. 发明公开

EP4362265A2 GRID-CONNECTED PHOTOVOLTAIC INVERTER AND GRID-CONNECTED CONTROL METHOD 审中-公开
公开(公告)号：EP4362265A2
公开(公告)日：2024-05-01
申请号：EP23205558.2
申请日：2023-10-24
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： XU, Fei , YU, Xinyu , ZHAO, Mingquan , QU, Zisen , XIN, Kai
IPC分类号： H02J3/38 , H02M7/5387
CPC分类号： Y02E10/56 , H02J3/381 , H02J2300/2420200101 , H02M7/53871
摘要： This application provides a grid-connected photovoltaic inverter and a grid-connected control method. The photovoltaic inverter includes a control circuit and an inverter circuit. The control circuit is configured to: when a current value of the grid-connected point is greater than or equal to a current amplitude limiting value, obtain an active voltage adjustment amount and/or a reactive voltage adjustment amount based on the current value of the grid-connected point, the current amplitude limiting value, and a voltage value of the grid-connected point, and control an output voltage of the inverter circuit to be a target voltage value based on the active voltage adjustment amount and/or the reactive voltage adjustment amount, to reduce the current value of the grid-connected point by reducing active power and/or reactive power output by the photovoltaic inverter. A voltage value of a target voltage is the target voltage value. According to an application scenario, current limiting may be separately performed on an active current and a reactive current at a grid-connected point in this application. This maintains system stability, and improves system security Response is quick, the control method is simple, and applicability is high.

10. 发明公开

EP4362076A1 BONDING STRUCTURE AND POWER DEVICE 审中-公开
公开(公告)号：EP4362076A1
公开(公告)日：2024-05-01
申请号：EP23205501.2
申请日：2023-10-24
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： Lu, Fenglong , Chen, Dong , Shi, Lei , Tang, Yunyu , Liu, Yunfeng
IPC分类号： H01L23/00
CPC分类号： H01L2224/491720130101 , H01L24/48 , H01L24/49 , H01L24/85
摘要： Embodiments of this application provide a bonding structure and a power device. The bonding structure includes a first power unit and at least two bonding wires. At least one end of the bonding wire is connected to the first power unit through bonding. Projections that are of lead paths of the at least two bonding wires and that are on a preset plane have at least one intersection point. In this application, spatial cross wire bonding is performed on the bonding wires, so that lead paths of the bonding wires form an angle with each other, thereby weakening electromagnetic force between the bonding wires. Therefore, fatigue due to fluctuating stress of the bonding wires can be alleviated, service lives of the bonding wires can be prolonged, and bonding effect can be ensured to a maximum extent.

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