Abstract: A method of fabricating a carbon nanotube (“CNT”) array includes providing a substrate with a CNT catalyst disposed on a surface of the substrate, heating the CNT catalyst to an annealing temperature, exposing the CNT catalyst to a CNT precursor for an exposure period to pre-load the CNT catalyst, and exposing the pre-loaded CNT catalyst to a carbon source for a growth period to form the CNT array. The formed CNT array comprises a plurality of CNT bundles that are aligned with one another in an alignment direction. At least one of the plurality of bundles comprises an average structural factor of 1.5 or less along an entirety of the length thereof.

Abstract: A power device assembly includes a heat-generating device, one or more porous bonding layers, and one or more cap layers. The one or more porous bonding layers are formed on a surface of the heat-generating device and define a plurality of embedded vapor channels. The one or more cap layers are engaged with a porous bonding layer of the one or more porous bonding layers opposite the heat-generating device. The one or more cap layer comprise a plurality of liquid feed channels for feeding cooling fluid to the heat-generating device via the porous bonding layer.

Abstract: A power electronics module includes a glass layer with one or more vias extending through the glass layer and having an electrically and thermally conductive material disposed within the one or more vias, a power electronic device directly bonded to a first surface of the glass layer, and, a cooling structure thermally coupled to a second surface of the glass layer.

Abstract: A system includes a power device unit coupled to a substrate. An upper cooling assembly is thermally coupled to an upper side of the substrate. A lower cooling assembly is thermally coupled to a lower side of the substrate. A gate driver unit is coupled to the upper cooling assembly. At least one upper via is formed through the upper cooling electrically coupling the gate driver unit to the power device unit. A capacitor unit is coupled to the lower cooling assembly. At least one lower via formed through the lower cooling assembly electrically coupling the capacitor unit to the power device unit.

Abstract: A two-phase cold plate includes an outer enclosure having a fluid inlet and a fluid outlet each fluidly coupled to a fluid pathway, an inner enclosure having a vapor cavity and a vapor outlet, and one or more wicking structures disposed in the outer enclosure. The one or more wicking structures fluidly couple the fluid pathway of the outer enclosure with the vapor cavity of the inner enclosure and the one or more wicking structures comprise a plurality of nucleation sites configured to induce vaporization of a cooling fluid and facilitate vapor flow into the vapor cavity of the inner enclosure.

Abstract: A system for using an electrostatic force to cause an object to adhere to a surface of a vehicle can include an electrode and a device. The electrode can be configured to be disposed within a structure of the vehicle. The structure can define the surface. A shape of the electrode can define a shape of a region of the surface. The device can be configured to connect the electrode to a voltage source so that, at a time at which the electrode is connected to the voltage source, an electric charge is produced on the electrode to produce the electrostatic force capable of causing the object to adhere to the surface. For example, the surface can include a dashboard, a dashboard vent frame, a sunglasses holder cover, or the like. For example, the object can include a mobile device, a cup, a pair of sunglasses, or the like.

Abstract: A cooling system that includes an expandable vapor chamber having a condenser side opposite an evaporator side, a condenser side wick coupled to a condenser side wall, an evaporator side wick coupled to an evaporator side wall, and a vapor core positioned between the evaporator side wick and the condenser side wick. The cooling system also includes a vapor pressure sensor communicatively coupled to a controller and a bellow actuator disposed in the vapor core and communicatively coupled to the controller. The bellow actuator is expandable based on a vapor pressure measurement of the vapor pressure sensor.

Abstract: A power electronics assembly includes a vapor chamber and a heat-generating device. The vapor chamber includes a housing defining an evaporator side and a condenser side and a pedestal integrally formed with an extending from the evaporator side, the pedestal comprising a non-rectangular shape corresponding to a thermal management objective. The heat-generating device is coupled to the pedestal.

Abstract: An electronics system may include a substrate, an electronic device bonded to the substrate, a plurality of photoluminescent particles disposed on the electronic device, an illuminator, a sensor, and a control module. The illuminator can illuminate the electronic device. The sensor can capture a first set of positions of the photoluminescent particles on the electronic device when the electronic device is not operating under a load and a second set of positions of the photoluminescent particles when the electronic device is operating under a load. The control module can determine thermomechanical stress on the electronic device based at least in part on a difference between the first set of positions and the second set of positions.

Abstract: A thermal management system for removing waste heat from a battery cell. The thermal management system includes a unit cell that includes a vapor chamber including an evaporator surface and a condenser surface. The evaporator surface and the condenser surface are fluidly connected by a wick. The unit cell also includes a phase change material (PCM) shell encapsulating a PCM. The evaporator surface is thermally coupled to the battery cell and absorbs waste heat generated by the battery cell. The condenser surface is thermally coupled to the PCM and rejects waste heat to the PCM.

Abstract: A method of forming a textured surface layer along a substrate that includes disposing a plurality of polymer spheres on a surface of the metal substrate, and electroplating the metal substrate at a current density to deposit a metal layer along a body of each of the plurality of polymer spheres disposed on the surface of the metal substrate. The metal layer does not extend above a top surface of the plurality of polymer spheres. The method further includes removing the plurality of polymer spheres from the metal layer to form the textured surface defined by a size and shape of the plurality of polymer spheres.

Abstract: A battery module including a battery cell and a thermal management system for removing heat from the battery cell. The thermal management system includes two or more unit cells in an array. Each unit cell includes a primary shell comprising a primary phase change material (PCM), and a secondary shell comprising a secondary PCM that is thermally coupled to the primary shell. The battery cell is thermally coupled to the primary shell at a heat transfer interface and the secondary shells of adjacent unit cells in the array are separate.

Abstract: A two-phase cold plate that includes a manifold body having a fluid inlet and a fluid outlet each fluidly coupled to a fluid pathway housed within the manifold body and a vaporization structure housed within the manifold body such that the fluid pathway is disposed over the vaporization structure. The vaporization structure includes a cavity cover, a porous surface, a vapor cavity disposed between the cavity cover and the porous surface, and one or more porous feeding posts extending between the cavity cover and the porous surface. The one or more porous feeding posts fluidly coupled the fluid pathway with the porous surface of the vaporization structure and the porous surface includes a plurality of nucleation sites configured to induce vaporization of a cooling fluid and facilitate vapor flow into the vapor cavity of the vaporization structure.

Abstract: A method, system, and non-transitory computer readable medium describing an autoencoder that creates a reduced feature space from healthy power electronics devices for training. Devices under test are then encoded and compared to the encoded features of the healthy devices to determine health of the other devices. Contextual information is used to build multiple models that compare power electronics devices from similarly operated vehicles with one another.

Abstract: Disclosed is a vehicle comprising a wheel with an associated air-cooled motor, and a ventilation path for passing outside air from outside the vehicle into the motor. An electrostatic device is disposed proximate to the ventilation path. When the electrostatic device is energized, particles or debris in the outside air are attracted toward or repelled from the electrostatic device, such that the particles or debris are removed from the outside air before the outside air enters the motor.

Abstract: An integrated power electronic assembly includes a power electronic device, a cooling assembly offset from and thermally coupled to a second edge of the power electronic device, and a thermal spreader offset from and thermally coupled to a first edge of the power electronic device. The first edge of the power electronic device is opposite the second edge of the power electronic device, and the thermal spreader is thermally coupled to the cooling assembly.

Abstract: A two-phase cold plate includes an outer enclosure having a fluid inlet and a fluid outlet each fluidly coupled to a fluid pathway, an inner enclosure having a vapor cavity and a vapor outlet, and one or more wicking structures disposed in the outer enclosure. The one or more wicking structures fluidly couple the fluid pathway of the outer enclosure with the vapor cavity of the inner enclosure and the one or more wicking structures comprise a plurality of nucleation sites configured to induce vaporization of a cooling fluid and facilitate vapor flow into the vapor cavity of the inner enclosure.

Abstract: Methods, apparatuses and systems provide technology that includes a first transistor, a second transistor stacked on the first transistor, at least one electrical conductor that is positioned between the first and second transistors and electrically connected to the first and second transistors, and a busbar that is electrically connected to the first and second transistors through the at least one electrical conductor.

Abstract: Methods, apparatuses and systems to provide for technology to that includes a plurality of transistors including first transistors and second transistors. The first transistors are disposed opposite the second transistors in a lateral direction with a first space between the first transistors and the second transistors in the lateral direction. A gate driver is electrically connected to the plurality of transistors to operate the plurality of transistors. The gate driver has a first portion disposed between the first transistors and the second transistors in the first space.

Abstract: A cold plate includes a first cooling surface comprising a first cooling structure bonded to an inner surface of the first cooling surface, a second cooling surface comprising a second cooling structure bonded to an inner surface of the second cooling surface, a manifold comprising an internal cavity defined by a first length, a first width, and a first height, and a flow divider defined by a second length, a second width, and a second height. The manifold is enclosed by the first cooling surface and the second cooling surface on opposing surfaces of the manifold separated by the first height. The flow divider is positioned within the internal cavity of the manifold. The flow divider supports and separates the first cooling structure and the second cooling structure by a portion of the second height of the flow divider.