Abstract:
A power device (10) comprises at least one power semiconductor module (12) comprising a wide bandgap semiconductor element (18); and a cooling system (16) for actively cooling the wide bandgap semiconductor element (18) with a cooling medium, wherein the cooling system (16) comprises a refrigeration device (40) for lowering a temperature of the cooling medium below an ambient temperature of the power device (10); wherein the cooling system (16) is adapted for lowering the temperature of the cooling medium in such a way that a temperature of the wide bandgap semiconductor (18) element is below 100° C.
Abstract:
The invention relates to a heat exchanger (1) comprising a base plate (2) for receiving a heat load from one or more electric components (3), an evaporator (5) being in thermal contact with a surface of the base plate (2) for transferring said heat load into a first fluid in the evaporator channels (7), and a condenser (8) dissipating heat from the first fluid. In order to provide an efficient heat exchanger the heat exchanger comprises a collector space (16) receiving first fluid from the condenser (8'), and the collector space (16) which is located higher than the lower ends of the evaporator channels (7) is in fluid communication with lower ends of the evaporator channels (7) for passing first fluid received from the condenser (8) to the lower ends of the evaporator channels (7).
Abstract:
It is proposed a two-phase heat exchanger device (100) for a power-electronic module arrangement having a semiconductor module. The two-phase heat exchanger device includes a base plate (110) configured for being in contact with a first semiconductor module (201) at a first side (123) of the base plate; and at least one tube element (120) for a first cooling medium (131) including a first portion (121) having at least one evaporator channel and a second portion (122) having at least one condenser channel. The base plate has a groove (111; 112) containing the tube element, wherein the groove is dimensioned for enabling thermal contact between the base plate and the first portion of the tube element and dimensioned to form a gap (113) between the base plate and the second portion of the tube element for thermal separation of the base plate and the second portion of the tube element.
Abstract:
The invention relates to a heat spreader (1) comprising a base plate (2) for receiving a heat load from at least one electric component (3), the base plate including pulsating heat pipes (4) for fluid flow arranged therein, wherein the base plate (2) has a first side (A), and a second side (B) which is opposite to the first side (A); the pulsating heat pipes comprise a plurality of multichannel heat tubes (4) which are embedded side by side on the first side of the base plate (A); and the second side of the base plate (2) is provided for attaching the electric components (3). The invitation provides also a power module comprising the heat spreader.
Abstract:
Leistungselektronikmodul (1) mit einem ersten Leistungselektronikelement (5), welches im Betrieb des Leistungselektronikmoduls (1) einen ersten Wärmestrom (29) erzeugt, und mit einem zweiten Leistungselektronikelement (6), welches im Betrieb des Leistungselektronikmoduls (1) einen zweiten Wärmestrom (30) erzeugt, und mit einem Sekundärkühlkreislauf (25), einem ersten Kühler (10), einem zweiten Kühler (11) und einem Wärmetauscher (14). Dabei ist der erste Kühler (10) zur Aufnahme mindestens eines Teils des ersten Wärmestromes (29) thermisch mit dem ersten Leistungselektronikelement (5) verbunden, und der zweite Kühler (11) zur Aufnahme mindestens eines Teils des zweiten Wärmestromes (30) thermisch mit dem zweiten Leistungselektronikelement (6) verbunden, wobei der Wärmetauscher (14) zur Übertragung mindestens eines Teils des ersten Wärmestromes (29) und des zweiten Wärmestromes (30) an einen Primärkühlstrom (26) im Betrieb des Leistungselektronikmoduls (1) ausgebildet ist. Der Wärmetauscher (14) ist dabei thermisch für einen abführbaren Wärmestrom ausgelegt, der betragsmässig kleiner als eine aus dem maximalen ersten Wärmestrom (29) und dem maximalen zweiten Wärmestrom (30) gebildete Summe ist.
Abstract:
It is proposed a cooling unit (100) for a power electronic module arrangement. The cooling unit includes a two-phase heat exchanger (101) including a plurality of tube elements (120), each of which having at least one tube extending in a width direction (301) of the cooling unit, within and communicating between an evaporator portion (121) and a condenser portion (122) of the cooling unit (100). The tube elements are arranged in a spaced-apart manner along a depth direction (303) of the cooling unit forming cooling paths (213) for allowing an external cooling medium (130) to flow through the cooling paths, the cooling paths traversing the condenser portion in a length direction (302) of the cooling unit (100). The cooling unit further includes flow guides (141; 142) for forcing an external cooling medium (130) arriving at the heat exchanger through the cooling paths and then away from the cooling unit.
Abstract:
It is proposed a two-phase heat exchanger device (100) for a power-electronic module arrangement having a semiconductor module. The two-phase heat exchanger device includes a base plate (110) configured for being in contact with a first semiconductor module (201) at a first side (123) of the base plate; and at least one tube element (120) for a first cooling medium (131) including a first portion (121) having at least one evaporator channel and a second portion (122) having at least one condenser channel. The base plate has a groove (111; 112) containing the tube element, wherein the groove is dimensioned for enabling thermal contact between the base plate and the first portion of the tube element and dimensioned to form a gap (113) between the base plate and the second portion of the tube element for thermal separation of the base plate and the second portion of the tube element.