A heat exchanger includes a plurality of fins that are spaced from each other and are arranged to divide a heat medium flow passage into a plurality of narrow passages. Each fin incudes a plurality of thick wall portions and a plurality of thin wall portions which are alternately arranged in a passage longitudinal direction. Each adjacent two of the plurality of fins, which are adjacent to each other, are defined as one fine and another fin, and each of the plurality of thick wall portions of the one fin is opposed to an adjacent one of the plurality of thin wall portions of the another fin in a fin arrangement direction, and each of the plurality of thin wall portions of the one fin is opposed to an adjacent one of the plurality of thick wall portions of the another fin in the fin arrangement direction.

A heat exchanger includes a plurality of fins that are spaced from each other and are arranged to divide a heat medium flow passage into a plurality of narrow passages. Each fin incudes a plurality of thick wall portions and a plurality of thin wall portions which are alternately arranged in a passage longitudinal direction. Each adjacent two of the plurality of fins, which are adjacent to each other, are defined as one fine and another fin, and each of the plurality of thick wall portions of the one fin is opposed to an adjacent one of the plurality of thin wall portions of the another fin in a fin arrangement direction, and each of the plurality of thin wall portions of the one fin is opposed to an adjacent one of the plurality of thick wall portions of the another fin in the fin arrangement direction.

A liquid cooling jacket includes a refrigerant flow path which is a flow path having a width in a second direction and in which a heat dissipation assembly is located on a first side in a third direction, where a direction in which a refrigerant flows is defined as a first direction. The refrigerant flow path includes a narrow flow path portion. A width in the third direction of the narrow flow path portion is smaller than a width in the third direction of a flow path on a first side in the first direction with respect to the narrow flow path portion and a width in the third direction of a flow path on a second side in the first direction with respect to the narrow flow path portion.

Electronic devices are disclosed including hydrophobic or oleophobic coatings that control coolant flow therein or thereon. In at least one embodiment, a power inverter cold plate is provided including coolant inlet, a coolant outlet, a coolant flow spreading region, a coolant flow collection region, and a coolant heat-transfer region disposed therebetween; and one or more layers of a hydrophobic or oleophobic coating configured to control a flow of coolant in the cold plate. A method may include applying one or more layers of a hydrophobic or oleophobic coating to a power inverter cold plate to control a flow of coolant in the cold plate, the one or more layers being applied to one or more of a coolant flow spreading region, a coolant flow collection region, or a coolant heat-transfer region disposed therebetween. The layers may define coolant flow paths, eliminate recirculation zones, and/or prevent coolant leak paths.

Electronic devices are disclosed including hydrophobic or oleophobic coatings that control coolant flow therein or thereon. In at least one embodiment, a power inverter cold plate is provided including coolant inlet, a coolant outlet, a coolant flow spreading region, a coolant flow collection region, and a coolant heat-transfer region disposed therebetween; and one or more layers of a hydrophobic or oleophobic coating configured to control a flow of coolant in the cold plate. A method may include applying one or more layers of a hydrophobic or oleophobic coating to a power inverter cold plate to control a flow of coolant in the cold plate, the one or more layers being applied to one or more of a coolant flow spreading region, a coolant flow collection region, or a coolant heat-transfer region disposed therebetween. The layers may define coolant flow paths, eliminate recirculation zones, and/or prevent coolant leak paths.

The invention relates to a heat exchanger block 2 and to a heat recovery ventilation unit 1 comprising such a heat exchanger block. In the heat exchanger block 2, the individual flow cross-section (Q1) of flow passages of said plurality of first air flow passages (AFP1) in said parallel flow region (PF) and the individual flow cross-section (Q2) of flow passages of said plurality of second air flow passages (AFP2) in said parallel flow region (PF) gradually, preferably linearly, decrease along a straight line (x-perpendicular to the parallel air flow passages (AFP1 and AFP2) and from said first wall (W1) to said second wall (W2) of the block.

The invention relates to a heat exchanger block 2 and to a heat recovery ventilation unit 1 comprising such a heat exchanger block. In the heat exchanger block 2, the individual flow cross-section (Q1) of flow passages of said plurality of first air flow passages (AFP1) in said parallel flow region (PF) and the individual flow cross-section (Q2) of flow passages of said plurality of second air flow passages (AFP2) in said parallel flow region (PF) gradually, preferably linearly, decrease along a straight line (x-perpendicular to the parallel air flow passages (AFP1 and AFP2) and from said first wall (W1) to said second wall (W2) of the block.

A heat exchanger includes first fluid passages that each have a first inlet that communicates into a first core passage and then a first outlet. The first inlet has a first inlet cross-sectional perimeter. The first core passage has a first core cross-sectional perimeter. Second fluid passages are interleaved with the first fluid passages. Each of the second passages have a second inlet that communicates into a second core passage and then a second outlet. The second inlet has a second inlet cross-sectional perimeter. The second core passage has a second core cross-sectional perimeter. The first and second core cross-sectional perimeters are larger than their respective first and second inlet cross-sectional perimeters. The first and second core passages are undivided from their respective first and second inlets to their respective first and second outlets.

Electrochemical cell battery system and associated methods of operation are provided based on the incorporation of a thermal suppression construct including a supply of cooling fluid dispensed in intimate contact with the cells disposed within an enveloping sealed enclosure. The electrochemical cells are connected electrically by bus bars to form a battery of cells. The bus bars support cooling by convection methods. The cells are allowed to float mechanically as they are charged and discharged while maintaining intimate thermal contact with the enveloping sealed enclosure through conduction and the bus bars through conduction. The system provides a method of cooling the cells by conduction and convection and that accommodates mechanical changes to both the cells and the enveloping sealed enclosure.

Electrochemical cell battery system and associated methods of operation are provided based on the incorporation of a thermal suppression construct including a supply of cooling fluid dispensed in intimate contact with the cells disposed within an enveloping sealed enclosure. The electrochemical cells are connected electrically by bus bars to form a battery of cells. The bus bars support cooling by convection methods. The cells are allowed to float mechanically as they are charged and discharged while maintaining intimate thermal contact with the enveloping sealed enclosure through conduction and the bus bars through conduction. The system provides a method of cooling the cells by conduction and convection and that accommodates mechanical changes to both the cells and the enveloping sealed enclosure.