发明名称 |
Electric power conversion system |
摘要 |
With an electric power conversion system, miniaturization of the system is aimed at while reduction of rise in temperature is achieved by sufficiently securing a cooling operation by a cooling fan. The electric power conversion system is provided with a casing for covering cooling fins for cooling power semiconductors, a main circuit board having a driver circuit for driving the power semiconductors, and a cover for covering up the main circuit board. The system includes a first air-flow hole provided at a part of the main circuit board, on the upper side of an air-intake provided in the cover, and a second air-flow hole provided on the lower side of the first air-flow hole, and on the lower side of the cooling fins, wherein air from the second air-flow hole is caused to flow to the cooling fins by a cooling fan. |
申请公布号 |
EP2020739(A2) |
申请公布日期 |
2009.02.04 |
申请号 |
EP20080011421 |
申请日期 |
2008.06.24 |
申请人 |
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO. LTD. |
发明人 |
IBORI, SATOSHI;HAMANO, KOJI;MAO, JIANGMING;KAMEZAWA, TOMOYA;HIROTA, MASAYUKI;HIRAGA, MASAHIRO |
分类号 |
H02M7/00;H01L25/16;H05K7/20 |
主分类号 |
H02M7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|