Machine integrated power

摘要

An electric motor 10 includes a housing surrounding the stator, the housing end having the electronics mounted in a pancake configuration 44 comprising power electronic 23 ie bare power dies 36, a pancake capacitor (layer 48), a cold plate (layer 50) and liquid cooled busbars 62 forming the mount. A liquid power die attach 66 surrounded by a sealant 72 may be present between the die and the cooled busbar, an electrical interconnect liquid metal die attach 74, a interconnect substrate 77, sealent 74, thermal adhesive 78 and a heat sink 80 being present, the layers 78,80 providing further cooling of the die. Other connecting arrangements are disclosed (Fig 5c). The busbar may incorporate a cooling channel or comprise a heat pipe arrangement Fig 7a or other form of vapour/liquid heat spreader Fig 7c. Figs 1,2 disclose a mounting arrangement surrounding the stator with a three layer construction.