	US 12,108,579 B2
	Container type frequency conversion pry
Xianzhou Sun, Qingdao (CN); Yimin Shen, Qingdao (CN); and Chenglin Song, Qingdao (CN)
Assigned to QINGDAO CCS ELECTRIC CORPORATION, Qingdao (CN)
Appl. No. 17/781,015
Filed by QINGDAO CCS ELECTRIC CORPORATION, Qingdao (CN)
PCT Filed Nov. 16, 2020, PCT No. PCT/CN2020/128971 § 371(c)(1), (2) Date May 30, 2022, PCT Pub. No. WO2021/104073, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911202821.2 (CN), filed on Nov. 29, 2019.
Prior Publication US 2023/0008191 A1, Jan. 12, 2023
Int. Cl. H05K 7/20 (2006.01); H01F 27/02 (2006.01); H05K 7/14 (2006.01)

CPC H05K 7/20909 (2013.01) [H01F 27/025 (2013.01); H05K 7/1432 (2013.01); H05K 7/20927 (2013.01)]

9 Claims

1. A container type variable-frequency drive skid comprising a container body with an accommodation space formed therein, the accommodation space is provided with a wiring unit, a power transformation unit and an inverter unit therein, wherein the skid further comprises:

a first cooling unit arranged in the accommodation space, which comprises:

an air duct in which the power transformation unit is disposed; and

a first cooling fan arranged in the air duct, which is configured to drive air pass the air duct for cooling of the power transformation unit;

and

a second cooling unit arranged in the accommodation space including a cooling conductive assembly disposed close to the inverter unit and a second cooling fan which are configured to cool down the inverter unit;

wherein the cooling conductive assembly comprises a refrigerant containment box and a cooling conductive plate assembly, the refrigerant containment box is in fluid communication with the cooling conductive plate assembly through a first pipe, a refrigerant circulates in the cooling conductive assembly, the cooling conductive plate assembly is disposed close to the inverter unit, and the refrigerant containment box is arranged on the second cooling fan.