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1.发明公开
公开(公告)号：EP4254751A1
公开(公告)日：2023-10-04
申请号：EP20967547.9
申请日：2020-12-30
发明人： PAN, Liwen , FENG, Hui , WANG, Deyuan , JIN, Xinyu
IPC分类号： H02M1/00
摘要： This application provides a digital signal modulation method, including: obtaining a modulation value of a comparator based on a target duty cycle and an initial value of a counter; obtaining a calibration value based on the target duty cycle, the initial value of the counter, and the modulation value of the comparator; generating periodic PWM signals based on the modulation value of the comparator and the initial value of the counter; and performing pulse frequency modulation on a PWM signal in each period of the periodic PWM signal based on the calibration value. In this application, pulse frequency modulation is performed on a PWM signal in each period without increasing hardware costs, to improve duty cycle precision of the PWM signal in each period, so as to output a PWM signal with higher precision.
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公开(公告)号：EP4250548A1
公开(公告)日：2023-09-27
申请号：EP20964602.5
申请日：2020-12-09
发明人： PAN, Liwen , FENG, Hui , WANG, Deyuan , JIN, Xinyu , WANG, Yong , YU, Yao
IPC分类号： H02M3/335
摘要： This application provides a new power conversion apparatus and a method for driving the power conversion apparatus. In the power conversion apparatus provided in this application, two switching transistors in a bridge arm circuit of an input converter are separately connected in parallel to a circuit formed by connecting a switching transistor and a capacitor in series, and/or two switching transistors in a bridge arm circuit of an output converter are separately connected in parallel to a circuit formed by connecting a switching transistor and a capacitor in series. The power conversion apparatus provided in this application has a larger gain range of an output voltage when driven by a corresponding driving method.
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3.发明公开
公开(公告)号：EP4349639A1
公开(公告)日：2024-04-10
申请号：EP21947616.5
申请日：2021-06-30
发明人： WANG, Deyuan , FENG, Hui , PAN, Liwen
IPC分类号： B60L53/31 , B60L53/302 , H02J7/00 , H05K7/20
摘要： This application provides a charging plug and socket-outlet, charging and to-be-charged apparatuses, a charging system, and a control method. The charging system includes: a charging apparatus and a to-be-charged apparatus. The charging apparatus includes a charging plug and a first cooling system. The charging plug includes a first electrical transmission interface, a first heat conduction output interface, and a first heat conduction input interface. The to-be-charged apparatus includes a battery, a charging socket-outlet, and a second cooling system. The charging socket-outlet includes a second electrical transmission interface, a second heat conduction output interface, and a second heat conduction input interface. When the first electrical transmission interface, the first heat conduction output interface, and the first heat conduction input interface in the charging plug are respectively connected to the second electrical transmission interface, the second heat conduction input interface, and the second heat conduction output interface in the charging socket-outlet, the first cooling system in the charging apparatus and the second cooling system in the to-be-charged apparatus form a heat conduction loop. The solutions of this application can be used to meet a heat dissipation requirement of the battery in the to-be-charged apparatus during super charging.
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公开(公告)号：EP4250545A1
公开(公告)日：2023-09-27
申请号：EP21896476.5
申请日：2021-09-10
发明人： PAN, Liwen , FENG, Hui , WANG, Deyuan
摘要： This application provides a power converter, which relates to the field of automobiles and may be applied to various electric vehicles. The power converter includes one input interface, a plurality of power modules, and a plurality of output interfaces. The plurality of power modules include a high-voltage bidirectional direct current module, a low-voltage direct current module, a bidirectional alternating current module, and an industrial electrical power module. Input ends of the plurality of power modules are all electrically connected to the input interface, and the input interface is electrically connected to a battery pack of the vehicle. Output ends of the plurality of power modules are independent of each other, the output ends of the plurality of power modules are electrically connected to the plurality of output interfaces in a one-to-one correspondence, and the output interfaces are electrically connected to a power device or a charging device other than the vehicle. The power converter provided in embodiments of this application can have functions of various power modules, and can provide or obtain various types of electrical energy, thereby extending a wider application scope, and facilitating charging and power supply.
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