| 摘要 |
An electric power converter includes a stacked semiconductor unit formed by stacking semiconductor modules and cooling tubes, and a case. The case has a rear wall portion, a front wall portion, and a pair of side wall portions. The rear wall portion has an opening hole formed in a shape that an outer profile of the cooler fits inside. The stacked semiconductor unit has a closing member joined to a rear-most cooling pipe that is disposed on a rear side to close the opening hole, a refrigerant introducing pipe extended rearward from the closing member, and a refrigerant discharging pipe extended rearward from the closing member. The refrigerant introducing pipe and the refrigerant discharging pipe, and the closing member are connected in close contact with each other, and the closing member and the case are in close contact by a seal section. |
| 主权项 |
1. An electric power converter comprising:
a semiconductor structure unit that has semiconductor modules that are parts of a power conversion circuit and a cooler for cooling the semiconductor modules; and a case that accommodates the semiconductor structure unit inside; wherein, the case includes a rear wall portion having an opening hole, a front wall portion disposed opposing a front side of the rear wall portion, and a pair of side wall portions that connect both ends of the rear wall portion and the front wall portion with each other in a lateral direction; the opening hole is formed in a shape that an outer profile of the cooler fits inside when viewed from a longitudinal direction in which the rear wall portion and the front wall portion are aligned along; the semiconductor structure unit has a closing member joined to a rear-most cooling pipe that is disposed on a rear side in the longitudinal direction to close the opening hole, a refrigerant introducing pipe extended rearward from the closing member and introduces a coolant into the cooler, and a refrigerant discharging pipe extended rearward from the closing member and discharges the refrigerant from the inside of the cooler; and the closing member and the case are in close contact by a seal section formed between the closing member and the rear wall portion. |
