US 12,408,310 B2
Power converter, heat exchanger, heat sink, and photovoltaic power generation system
Faming Sun, Dongguan (CN); Jun Chen, Dongguan (CN); Quanming Li, Dongguan (CN); and Xiaowei Hui, Dongguan (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 16, 2023, as Appl. No. 18/336,209.
Application 18/336,209 is a continuation of application No. PCT/CN2020/138161, filed on Dec. 22, 2020.
Prior Publication US 2023/0328936 A1, Oct. 12, 2023
Int. Cl. H05K 7/20 (2006.01); H01L 23/367 (2006.01); H02M 1/32 (2007.01); H02S 40/32 (2014.01); H02S 40/42 (2014.01)
CPC H05K 7/209 (2013.01) [H01L 23/367 (2013.01); H02M 1/327 (2021.05); H02S 40/32 (2014.12); H02S 40/42 (2014.12); H05K 7/20936 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A power converter comprising:
a power semiconductor device and a magnetic element are disposed in a sealed cavity;
wherein the power semiconductor device is configured to dissipate heat through a first heat sink, and cooling fins of the first heat sink are located in a heat dissipation cavity; and
wherein the magnetic element is configured to dissipate the heat through a heat exchanger located in the heat dissipation cavity, the sealed cavity comprises a first air duct, and the magnetic element is disposed in the first air duct;
a first end of the first air duct is an air supply vent, a second end of the first air duct is an air return vent, the air supply vent is connected to a first end of the heat exchanger, and the air return vent is connected to a second end of the heat exchanger; and
at least one first internal circulation fan is further disposed at the air supply vent or the air return vent, and is configured to control an air flow to start from the air supply vent and arrive at the air return vent along an inner cavity of the first air duct.