POWER CONVERTER

• Main Author: DEGUCHI MASATAKA
• Format: Patent
• Language: English; Japanese
• Published: 30.08.2021
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BASIC ELECTRIC ELEMENTS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION; SEMICONDUCTOR DEVICES

To provide a structure for a power converter, in which a power module accommodating a power conversion switching element is in contact with a cooler, such that the power module can be effectively cooled.SOLUTION: A power converter 2 is equipped with coolers 31, 32 that are in contact with a power module 10. A layered product of the power module 10 and the coolers 31, 32 is accommodated in a case 50. A surface, of the first cooler 31, opposite to the power module 10 side is in contact with the case 50, and further, an output bus bar 46 connected with a mid-point terminal 13 is contact with the case 50. One surface of the first cooler 31 directly cools the power module 10, and the other surface absorbs heat transferred from the power module 10 via the mid-point terminal 13 and the output bus bar 46.SELECTED DRAWING: Figure 8 【課題】本明細書は、電力変換用のスイッチング素子を収容するパワーモジュールが冷却器に接している電力変換器に関し、パワーモジュールを効果的に冷却できる構造を提供する。【解決手段】電力変換器２は、パワーモジュール１０に接する冷却器３１、３２を備える。パワーモジュール１０と冷却器３１、３２の積層体はケース５０に収容される。第１冷却器３１のパワーモジュール１０とは反対側の面がケース５０に接しているとともに、中点端子１３に接続されている出力バスバ４６がケース５０に接している。第１冷却器３１は、一方の面でパワーモジュール１０を直接に冷却し、他方の面では中点端子１３と出力バスバ４６を介して伝わってくるパワーモジュール１０の熱を吸収する。【選択図】図８