Abstract:
A liquid cooled power electronics assembly (10) configured to use electrically conductive coolant (16) to cool power electronic devices that uses dielectric plates sealed with a metal sleeve around the perimeter of the dielectric plates to form a device assembly (10). The configuration allows for more direct contact between the electronic device and the coolant (16), while protecting the electronic device from contact with potentially electrically conductive coolant (16). Material used to form the dielectric plates and the housing (18) are selected to have similar coefficients of thermal expansion (CTE) so that the reliability of the seals is maximized.
Abstract:
A liquid cooled power electronics assembly (10) configured to use electrically conductive coolant (16) to cool power electronic devices that uses dielectric plates sealed with a metallic seal around the perimeter of the dielectric plates to form a device assembly (10), and then forms another metallic seal between the device assembly (10) and a housing (18). The configuration allows for more direct contact between the electronic device (12) and the coolant (16), while protecting the electronic device (12) from contact with potentially electrically conductive coolant (16). Material used to form the dielectric plates and the housing (18) are selected to have similar coefficients of thermal expansion (CTE) so that the reliability of the seals is maximized.
Abstract:
A liquid cooled power electronics assembly (10) configured to use electrically conductive coolant (16) to cool power electronic devices that uses dielectric plates sealed with a metallic seal around the perimeter of the dielectric plates to form a device assembly (10), and then forms another metallic seal between the device assembly (10) and a housing (18). The configuration allows for more direct contact between the electronic device (12) and the coolant (16), while protecting the electronic device (12) from contact with potentially electrically conductive coolant (16). Material used to form the dielectric plates and the housing (18) are selected to have similar coefficients of thermal expansion (CTE) so that the reliability of the seals is maximized.
Abstract:
An assembly (10) for coupling thermally a thermoelectric generator (TEG (12)) to an exhaust manifold of an internal combustion engine. The exhaust manifold forms a first heat exchanger (14) configured to couple thermally heat from exhaust gas (16) to an outer surface (22) of the first heat exchanger (14). The outer surface (22) is preferably formed of stainless steel. A first dielectric layer (24) is formed by firing a thick-film dielectric material onto the stainless steel of the first heat exchanger (14). A first conductor layer (26) is formed by firing a conductive thick-film onto the first dielectric layer (24). A first paste layer (32) of silver (Ag) based sintering paste is interposed between the first conductor layer (26) and a first contact (30) of the TEG (12). The first contact (30) is sintered to the first conductor layer (26) when the assembly (10) is suitably arranged and suitably heated.
Abstract:
An assembly (10) for packaging one or more electronic devices (12) in die form includes substrates (26, 34) on opposite sides of the assembly (10), with lead frames (42, 60) between the electronic devices (12) and the substrates (26, 34). The substrates (26, 34), lead frames (42, 60) and electronic devices (12) are sintered together using silver-based sintering paste (68, 70, 72, 74) between the one or more electronic devices (12) and the lead frames (42, 60) and between the lead frames (42, 60) and the substrates (26, 34). The material and thicknesses of the substrates (26, 34) and lead frames (42, 60) are selected so that stresses experienced by the electronic devices (12) caused by changes in temperature of the assembly (10) are balanced from the centre of the assembly (10), thereby eliminating the need for balancing stresses at a substrate level by applying substantially matching metal layers to both sides of the substrates.
Abstract:
A liquid cooled power electronics assembly (10) configured to use electrically conductive coolant (16) to cool power electronic devices that uses dielectric plates sealed with a metal sleeve around the perimeter of the dielectric plates to form a device assembly (10). The configuration allows for more direct contact between the electronic device and the coolant (16), while protecting the electronic device from contact with potentially electrically conductive coolant (16). Material used to form the dielectric plates and the housing (18) are selected to have similar coefficients of thermal expansion (CTE) so that the reliability of the seals is maximized.
Abstract:
An assembly (10) for packaging one or more electronic devices (12) in die form includes substrates (26, 34) on opposite sides of the assembly (10), with lead frames (42, 60) between the electronic devices (12) and the substrates (26, 34). The substrates (26, 34), lead frames (42, 60) and electronic devices (12) are sintered together using silver-based sintering paste (68, 70, 72, 74) between the one or more electronic devices (12) and the lead frames (42, 60) and between the lead frames (42, 60) and the substrates (26, 34). The material and thicknesses of the substrates (26, 34) and lead frames (42, 60) are selected so that stresses experienced by the electronic devices (12) caused by changes in temperature of the assembly (10) are balanced from the centre of the assembly (10), thereby eliminating the need for balancing stresses at a substrate level by applying substantially matching metal layers to both sides of the substrates.
Abstract:
A liquid cooled power electronics assembly (10) configured to use electrically conductive coolant (16) to cool power electronic devices that uses dielectric plates sealed with a metallic seal around the perimeter of the dielectric plates to form a device assembly (10), and then forms another metallic seal between the device assembly (10) and a housing (18). The configuration allows for more direct contact between the electronic device (12) and the coolant (16), while protecting the electronic device (12) from contact with potentially electrically conductive coolant (16). Material used to form the dielectric plates and the housing (18) are selected to have similar coefficients of thermal expansion (CTE) so that the reliability of the seals is maximized.