公开(公告)号：US20220166313A1

公开(公告)日：2022-05-26

申请号：US17670592

申请日：2022-02-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jun WANG ,  Houjian XU ,  Tiansan LIN ,  Fangpo ZHANG

IPC: H02M3/07 ,  H02M1/00 ,  H02J3/38

Abstract: A direct current-direct current conversion circuit includes: an input inductor, a first capacitor, a second capacitor, a flying capacitor, a first switch, a second switch, a first inductor, a first diode, a first buffer circuit, a third switch, a fourth switch, a second inductor, a second diode, and a second buffer circuit. A power supply, the input inductor, the first diode, the second diode, the first capacitor, and the second capacitor are sequentially connected in series. A first terminal of the flying capacitor is connected between the first diode and the second diode. A second terminal of the flying capacitor is connected between the first switch and the third switch, and the second terminal of the flying capacitor is further connected between the second switch and the second inductor.

公开(公告)号：US20240421766A1

公开(公告)日：2024-12-19

申请号：US18814649

申请日：2024-08-26

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xu HE ,  Fangpo ZHANG

IPC: H02S50/10 ,  H02S40/32 ,  H02S40/40

Abstract: A photovoltaic inverter and a temperature detection apparatus. The photovoltaic inverter includes a plurality of photovoltaic terminals, a converter, a printed circuit board (PCB), a temperature detection circuit, and a controller. The plurality of photovoltaic terminals are correspondingly connected to a plurality of photovoltaic modules. The PCB includes an electrically conductive layer and at least one thermally conductive insulation layer. One end of each photovoltaic terminal is soldered on the PCB, and the other end is connected to a corresponding photovoltaic module in a thermally conductive manner. The electrically conductive layer transmits electric energy generated by the plurality of photovoltaic modules to the converter. Each thermally conductive insulation layer conducts heat generated by at least one photovoltaic terminal. The temperature detection circuit detects a temperature of each thermally conductive insulation layer.