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159 条记录 (耗时 0.023 秒)

    SWITCHING CIRCUIT AND INVERTER CIRCUIT
    1.
    发明公开
    SWITCHING CIRCUIT AND INVERTER CIRCUIT 审中-公开

    公开(公告)号：EP4443733A1

    公开(公告)日：2024-10-09

    申请号：EP22898612.1

    申请日：2022-11-24

    申请人： Imasen Electric Industrial Co., Ltd.

    发明人： YAMANOUE, Koichi

    IPC分类号： H02M7/48

    CPC分类号： Y02B70/10 ,  H02M7/48

    摘要： [Subject Matter]
    To provide a switching circuit with high power conversion efficiency at high frequencies.
    [Solution(s)]
    The switching circuit 110 consists of an inductor L arranged between the load means R and the switch means M, a first rectifying means D1 and a first capacitor C1 arranged in series between the switch means M and the power supply or ground, a second rectifying means D2 and a second capacitor C2 connected in parallel to the first rectifying means and the first capacitor C1 arranged in series through the inductor L, and the third rectifying means D3 arranged between the connection of the first rectifying means D1 and the first capacitor C1 and the connection of the second capacitor C2 and the second rectifying means D2.

    DIRECT-CURRENT CONVERTER, COMMUNICATION DEVICE AND PHOTOVOLTAIC SYSTEM
    4.
    发明公开
    DIRECT-CURRENT CONVERTER, COMMUNICATION DEVICE AND PHOTOVOLTAIC SYSTEM 审中-实审

    公开(公告)号：EP4432614A1

    公开(公告)日：2024-09-18

    申请号：EP22954519.9

    申请日：2022-08-11

    申请人： Huawei Digital Power Technologies Co., Ltd.

    发明人： HE, Zhengyan

    IPC分类号： H04L27/00 ,  H02M3/335

    CPC分类号： Y02B70/10 ,  H04L27/00 ,  H02M3/335

    摘要： Embodiments of this application disclose a direct current converter, a communication device, and a photovoltaic system. The direct current converter includes a full-bridge inverter, a control module, a transformer, a resonant circuit, and a rectifier module. The full-bridge inverter includes a first switching device, a second switching device, a third switching device, and a fourth switching device. The control module adjusts a duty cycle of the first switching device, the second switching device, the third switching device, or the fourth switching device to a first duty cycle, so that an output voltage of the direct current converter is a first voltage. The control module further controls a working frequency of the direct current converter to be a first working frequency, where an absolute value of a difference between the first working frequency and a resonant frequency of the resonant circuit is less than or equal to a threshold, so that a switching device other than the first switching device, the second switching device, the third switching device, or the fourth switching device that is adjusted in the direct current converter works in a soft switching state. Embodiments of this application can improve efficiency of the direct current converter.

    POWER STORAGE APPARATUS
    9.
    发明公开
    POWER STORAGE APPARATUS 审中-实审

    公开(公告)号：EP4415210A1

    公开(公告)日：2024-08-14

    申请号：EP24150425.7

    申请日：2024-01-04

    申请人： Kehua Data Co., Ltd

    发明人： LIU, Zhao ,  PENG, Qianqian ,  YI, Longqiang

    IPC分类号： H02J7/00

    CPC分类号： Y02B70/10 ,  H02J7/0019

    摘要： A power storage apparatus includes a first power storage unit, a second power storage unit, a resonant circuit, a first switch, a second switch, a third switch and a fourth switch. The first end of the first switch is coupled to a first end of the first power storage unit. The second end of the first switch is coupled to a first end of the second switch and is coupled to a first end of the resonant circuit. The second end of the second switch is coupled to a second end of the first power storage unit and is coupled to a first end of the second power storage unit. The first end of the third switch is coupled to the first end of the second power storage unit and is coupled to the second end of the second switch.