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公开(公告)号：US11811263B2
公开(公告)日：2023-11-07
申请号：US17298416
申请日：2019-06-13
发明人： Jing Wang , Shiyong Jiang , Wu Wen , Keqin Liu , Peng Ren
摘要： The present invention provides a power conversion method, apparatus, and device, and a medium. The power conversion apparatus comprises: a configurable input interface, a power conversion circuit, and a configurable output interface. The configurable input interface is provided to configure a first electrical connection mode between an input power supply and the power conversion circuit, and to electrically connect the input power supply to the power conversion circuit. The configurable output interface is provided to configure a second electrical connection mode between a load and the power conversion circuit, and to electrically connect the load to the power conversion circuit. The power conversion circuit is provided to perform corresponding power conversion according to a parameter of the input power supply and a parameter of the load. Embodiments of the present invention resolve the problem in the related art of poor general applicability of a power conversion apparatus, thereby improving the general applicability of the power conversion apparatus.
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2.发明申请公开(公告)号：US20180287557A1
公开(公告)日：2018-10-04
申请号：US15772411
申请日：2016-10-25
发明人： Shiyong Jiang , Chongyang Feng , Xuefen Zhang , Jing Wang , Keqin Liu , Jiangxi Song , Peng Ren , Wu Wen , Baowei Lin
IPC分类号： H02S50/10
摘要： A method, an apparatus, and a system for detecting the working state of a photovoltaic panel, and a photovoltaic electrical system are provided. The photovoltaic panel is arranged in a photovoltaic electrical system including a photovoltaic device and a control device. The photovoltaic device includes the photovoltaic panel and a modulator. The control device includes a demodulator. The photovoltaic device is connected to the control device via a direct current bus. The method includes: detecting the operating state of the photovoltaic panel to obtain a state parameter; modulating, through the modulator, the state parameter to obtain a modulated signal, and loading the modulated signal to the direct current bus; transmitting the modulated signal to the demodulator through the direct current bus. The demodulator demodulates the modulated signal to obtain the state parameter.
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公开(公告)号：US20210399573A1
公开(公告)日：2021-12-23
申请号：US17288027
申请日：2019-08-15
发明人： Han Liu , Ningning Chen , Xuefen Zhang , Keqin Liu
摘要： Disclosed are a photovoltaic and a charging control method, device and circuit thereof, and a storage medium. The charging control circuit includes: a double-relay circuit and a charging relay circuit, wherein the double-relay circuit is arranged between a grid side circuit and a machine side circuit of the photovoltaic electric appliance; and the charging relay circuit is configured to turn on to realize the gradual charging of a bus capacitor when the double-relay circuit is not turned one. A charging relay circuit is added to an alternating-current power supply side, so that when double relays are not closed, a charging relay can be closed to realize the gradual charging of a bus capacitor.
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公开(公告)号：US20190208663A1
公开(公告)日：2019-07-04
申请号：US16322056
申请日：2017-04-21
发明人： Keqin Liu , Yingshuai You , Chongyang Feng
CPC分类号： H05K7/20209 , G06F1/20 , H05K5/0213 , H05K7/20136
摘要： A method, a device and a system for controlling heat dissipation of an electrical cabinet are provided. The method includes: a heating capacity in the electrical cabinet is predicted; according to the heating capacity predicted, a corresponding heat dissipation capacity is determined; and a rotational speed of a heat dissipation fan is controlled, so that a difference between the heating capacity and the heat dissipation capacity is within a predetermined range.
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公开(公告)号：US20190131205A1
公开(公告)日：2019-05-02
申请号：US16095651
申请日：2017-04-01
发明人： Jing Wang , Shiyong Jiang , Yu Zhang , Keqin Liu
IPC分类号： H01L23/367 , H01L23/00
摘要： The disclosure relates to the field of electronic elements, and discloses an Insulated Gate Bipolar Transistor (IGBT) module assembly which comprises a cooling plate and an IGBT module fixedly connected to the cooling plate, wiring terminals are arranged at an end face of the IGBT module, which is away from the cooling plate, the IGBT module comprises a side face adjacent to the end face, and the side face and the cooling plate form a water guiding groove. In the disclosure, the side face and the cooling plate form the water guiding groove, and a great amount of condensed water collected on the cooling plate can be guided to flow out through the water guiding groove instead of flowing to the end face of the IGBT module, on which the wiring terminals are arranged.
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公开(公告)号：US11796194B2
公开(公告)日：2023-10-24
申请号：US16327164
申请日：2017-04-18
发明人： Jianhua Li , Hewei Lou , Keqin Liu , Weitao Ni , Jing Wang
CPC分类号： F24F5/0046 , F24F11/46 , F24F11/62 , F24F11/63 , F24F11/64 , F24F2005/0064 , F24F2005/0067 , F24F2140/60
摘要： Disclosed is a control parameter determining method for a photovoltaic air conditioning system, specifically including: determining a real-time inductance parameter of a controlled object of the photovoltaic air conditioning system according to real-time grid-connected power of the photovoltaic air conditioning system; substituting the real-time inductance parameter into the controlled object of the control system to calculate a basic control parameter of the control system; presetting a plurality of adjustment parameters corresponding to different grid-connected power respectively; when the real-time grid-connected power is matched with one of the grid-connected power, selecting an adjustment parameter corresponding to the matched grid-connected power to modify the basic control parameter, to obtain a target control parameter. The present disclosure further disclosed a control parameter determining apparatus and a control system for a photovoltaic air conditioning system.
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公开(公告)号：US11502511B2
公开(公告)日：2022-11-15
申请号：US17270046
申请日：2019-07-22
发明人： Jing Wang , Shiyong Jiang , Keqin Liu , Wu Wen , Xuefen Zhang , Peng Ren
摘要： A control method for a direct current electrical device and a direct current electrical device. The method includes: acquiring input parameters of a power supply of the direct current electrical device, identifying a type of the power supply according to the input parameters, and determining an operation mode of the direct current electrical device corresponding to the type of the power supply, and controlling an operation of the direct current electrical device according to the operation mode.
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公开(公告)号：US20210249884A1
公开(公告)日：2021-08-12
申请号：US17269340
申请日：2018-12-19
发明人： Ningning Chen , Chongyang Feng , Shiyong Jiang , Keqin Liu , Jing Wang
IPC分类号： H02J7/00
摘要： The present disclosure relates to a charging device and a charging system. The charging device includes a Direct Current (DC) bus access terminal configured for electrical connection with a DC bus to electrically connect the charging device to the DC bus a load access terminal configured for electrical connection with a load to be charged, to electrically connect the charging device to the load to be charged; a charging circuit having an input terminal electrically connected to the DC bus access terminal, and an output terminal electrically connected to the load access terminal, to charge electrical energy of the PC bus into the load to be charged; and a control circuit electrically connected to the charging circuit, for controlling the charging circuit to complete a charging process.
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公开(公告)号：US20180347834A1
公开(公告)日：2018-12-06
申请号：US15779300
申请日：2016-10-25
发明人： Mingzhu Dong , Zhigang Zhao , Shiyong Jiang , Chongyang Feng , Jiangxi Song , Xuefen Zhang , Keqin Liu , Jing Wang
CPC分类号： F24F11/00
摘要： A method for controlling a photovoltaic air conditioning system. The method comprises: detecting a grid frequency (101); when the detected grid frequency is not equal to a pre-set frequency, calculating and obtaining a control parameter according to the detected grid frequency (102); and controlling a photovoltaic air conditioning by means of the calculated and obtained control parameter (103). Also disclosed is a photovoltaic air conditioning control device.
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10.发明授权公开(公告)号：US12021409B2
公开(公告)日：2024-06-25
申请号：US17288027
申请日：2019-08-15
发明人： Han Liu , Ningning Chen , Xuefen Zhang , Keqin Liu
CPC分类号： H02J7/35 , H02J7/0029 , H02J7/0047 , H02J7/00712 , H02J7/345 , H02J2207/50
摘要： Disclosed are a photovoltaic electric appliance and a charging control method, device and circuit thereof, and a storage medium. The charging control circuit includes: a double-relay circuit and a charging relay circuit, wherein the double-relay circuit is arranged between a grid side circuit and a machine side circuit of the photovoltaic electric appliance; and the charging relay circuit is configured to turn on to realize the gradual charging of a bus capacitor when the double-relay circuit is not turned on. A charging relay circuit is added to an alternating-current power supply side, so that when double relays are not closed, a charging relay can be closed to realize the gradual charging of a bus capacitor.
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