Patent ID: 8699225
Filing Date: 2014-04-15
Classification: H05K

Abstract:
1. A liquid cooled power electronics assembly configured to use electrically conductive coolant to cool power electronic devices, said assembly comprising: a housing configured to define an inlet, an outlet, and a cavity configured to contain coolant within the cavity between the inlet and the outlet; an electronic device located within the cavity, wherein said electronic device is characterized as being substantially planar in shape and thereby defines a first planar side, a second planar side opposite the first planar side, and a device perimeter between the first planar side and the second planar side; a lead frame electrically coupled to the electronic device and extending outside the cavity through an opening in the housing; a first dielectric plate attached to the first planar side, said first dielectric plate having a first plate perimeter that extends beyond at least a portion of the device perimeter; a second dielectric plate attached to the second planar side, said second dielectric plate having a second plate perimeter that extends beyond at least a corresponding portion of the device perimeter; a first metallic seal formed between the portion of the first plate perimeter and the corresponding portion of the second plate perimeter, said first metallic seal effective to isolate the electronic device from the coolant, wherein the first dielectric plate, the second dielectric plate, and the first metallic seal cooperate to form a device package; and a second metallic seal formed between the device package and the opening effective to prevent coolant from passing out of the cavity through the opening.