Abstract:
A liquid-cooling heat dissipation plate with pin-fins and an enclosed liquid cooler having the same are provided. The liquid-cooling heat dissipation plate includes a heat dissipation plate body, a plurality of rhombus-shaped pin-fins, and a plurality of ellipse-shaped pin-fins. The heat dissipation plate body has a first heat dissipation surface and a second heat dissipation surface opposite to each other. The first heat dissipation surface is in contact with a heat source, and the second heat dissipation surface is in contact with a cooling fluid. The rhombus-shaped pin-fins and the ellipse-shaped pin-fins are integrally formed on the second heat dissipation surface and in a high density arrangement. The ellipse-shaped pin-fins correspond in position to a relative low temperature region of the heat source, and the rhombus-shaped pin-fins correspond in position to a relative high temperature region of the heat source.
Abstract:
A friction stir welding device, provided for welding stacked metallic boards together, includes a mounting seat and a plurality of friction-stir tools. The mounting seat is defined with a rotational axis-direction. Each friction-stir tool has a shoulder portion and a stirring probe protruded from the shoulder portion. The friction-stir tools are arranged in the rotational axis-direction and disposed on a bottom surface of the mounting seat. The friction-stir tools can rotate along the rotational axis-direction. When a relative linear motion is applied between the friction-stir tools and the stacked metallic boards, the shoulders of the friction-stir tools produce stirring-coverage zones which are overlapped partially along the linear movement direction, so that the stirring-coverage zones by the friction-stir tools form a planar welding zone. The present disclosure also provides a method of friction stir welding for welding stacked metallic boards together.
Abstract:
An IGBT module with a heat dissipation structure includes a first layer of chips, a second layer of chips, a first bonding layer, a second bonding layer, a first copper layer, a second copper layer, a thermally-conductive and electrically-insulating layer, and a heat dissipation layer. The first copper layer and the second copper layer are disposed on the thermally-conductive and electrically-insulating layer at intervals. The first layer of chips and the second layer of chips are disposed on the first bonding layer and the second bonding layer, respectively. The number of chips of the first layer of chips is larger than that of the second layer of chips such that the first copper layer has a greater thickness than the second copper layer.
Abstract:
A compound heat-dissipating device includes a conductive base and a heat-dissipating body. The conductive base has a first bottom surface, a first top surface, and a plurality of combining portions protruded from the first top surface. Each combining portion has a bottom end connected with the first bottom surface and a top end extended from the bottom end integrally. The top end has a cross-sectional area bigger than that of the bottom end. The heat-dissipating body has a second bottom surface and a second top surface. The second bottom surface has a pair of concave portions corresponding to a contour of the conductive base, and a plurality of combining grooves formed in the concave portion. The shape of the combining grooves is corresponding to that of the combining portions, and the combining portions are correspondingly combined with the combining grooves.
Abstract:
A liquid-cooling heat dissipation structure having a nonlinear fin array and a method for manufacturing the same are provided. The liquid-cooling heat dissipation structure includes an upper plate, a lower plate, and a flow guide member. The upper plate has an accommodating groove of which an inner side has an upper joint area formed thereon. The lower plate has a lower joint area. The flow guide member disposed between the upper plate and the lower plate includes a heat dissipation plate body having a first surface and a second surface, and a plurality of heat dissipation columns integrally disposed on the second surface. The upper brazing area is connected to the lower brazing area, and two ends of the flow guide member are respectively connected to the upper joint area and the lower joint area to form an enclosed cavity for accommodating the heat dissipation columns.
Abstract:
A low pressure drop automotive liquid-cooling heat dissipation plate and an enclosed automotive liquid-cooling cooler having the same are provided. The low pressure drop automotive liquid-cooling heat dissipation plate includes a heat dissipation plate body and three fin sets. The heat dissipation plate body has a first heat dissipation surface and a second heat dissipation surface that are opposite to each other. The first heat dissipation surface is in contact with three traction inverter power component sets, and the second heat dissipation surface is in contact with a cooling fluid. Three heat dissipation regions that are spaced equidistantly apart from each other and that have a same size are defined on the second heat dissipation surface along a flow direction of the cooling fluid, and respectively correspond to three projection areas formed by projecting three traction inverter power component sets on the second heat dissipation surface.
Abstract:
A method for manufacturing an integrally-formed alloy structure having a brazing surface includes the following steps. Firstly, a magnesium-containing alloy is provided. Next, the magnesium-containing alloy is heat treated to obtain a vacuum heat-treated alloy structure. Then, the top surface of the vacuum heat-treated alloy structure is reduced to expose the brazing surface. Finally, the integrally-formed alloy structure having the brazing surface is formed.
Abstract:
An IGBT module with a heat dissipation structure includes a first layer of chips, a second layer of chips, a first bonding layer, a second bonding layer, a first copper layer, a second copper layer, a first polymer composite layer, a second polymer composite layer, a first ceramic layer, a second ceramic layer, and a heat dissipation layer. The first ceramic layer is partially formed on the heat dissipation layer and corresponds in position and in area to the first layer of chips, and the second ceramic layer is partially formed on the heat dissipation layer and corresponds in position and in area to the second layer of chips.
Abstract:
A copper-alloy heat-dissipation structure with a milled surface includes a heat-dissipation main body. The heat-dissipation main body has a first milled surface and a second milled surface that are opposite to each other, where heat-dissipation fins are formed on the first milled surface, and the maximum height roughness Rz of the second milled surface ranges from 1.5 μm to 5.4 μm.
Abstract:
A liquid-cooling heat dissipation plate with unequal height pin-fins and an enclosed liquid-cooling cooler having the same are provided. The liquid-cooling heat dissipation plate includes a heat dissipation plate body, a plurality of full-height pin-fins, and a plurality of non-full-height pin-fins. The heat dissipation plate body has a first heat dissipation surface and a second heat dissipation surface that face away from each other, the first heat dissipation surface is configured to be in contact with a plurality of heat sources, and the second heat dissipation surface is configured to be in contact with a cooling fluid. The full-height and non-full-height pin-fins are formed at the second heat dissipation surface of the heat dissipation plate body. A first heat dissipation region to an Nth heat dissipation region are defined on the heat dissipation plate body along a flowing direction of the cooling fluid.