Abstract: Electronics assemblies incorporating three-dimensional heat flow structures are disclosed herein. In one embodiment, an electronics assembly includes a substrate having a surface defining a plane, a heat generating component coupled to the surface of the substrate, a cooling device positioned outside of the plane defined by the surface of the substrate, and a three-dimensional heat flow structure. The three-dimensional heat flow structure includes a first portion thermally coupled to the heat generating component and a second portion extending from the first portion. At least a portion of the first portion is parallel to the plane defined by the substrate. The second portion is transverse to the plane defined by the surface of the substrate. The second portion is thermally coupled to the cooling device such that the three-dimensional heat flow structure thermally couples the heat generating component to the cooling device.

Abstract: A method for predicting a failure of a power control unit of a vehicle is provided. The method includes obtaining data from a plurality of sensors of the power control unit of a vehicle subject to simulated multi-load conditions, implementing a machine learning algorithm on the data to obtain machine learning data, obtaining new data from the plurality of sensors of power control unit of the vehicle subject to real multi-load conditions, implementing the machine learning algorithm on the new data to obtain test data, predicting a failure of the power control unit based on a comparison between the test data and the machine learning data.

Abstract: A hybrid vehicle includes a first controller configured to output a first control signal for a first inverter, a second controller configured to output a second control signal for a second inverter and a third control signal for the first inverter, and a selection circuit configured to output either of the first control signal or the third control signal to the first inverter. The third control signal is a signal for simultaneously turning on either of upper arm switching elements or lower arm switching elements of a plurality of arms of the first inverter. The second controller starts an engine by outputting the third control signal while outputting the second control signal to drive a second motor generator when abnormality occurs in the first controller.

Abstract: A power supply apparatus is provided which includes a power supply; a DC/DC converter including a switching element of an upper arm, a switching element of a lower arm and a reactor; a first switch provided between the switching element of the lower arm and the negative electrode of the power supply, the first switch being normally closed; a power supply fuse provided between the positive electrode of the power supply and the other end of the reactor; a second power supply fuse connected to the power supply fuse in parallel; a second switch connected to the second power supply fuse in series and connected to the power supply in parallel, the second switch being normally opened; and a controller that opens the first switch and closes the second switch upon a short circuit failure of the switching element of the lower arm being detected.

Abstract: A power supply system may include a first voltage converter provided between a first power storage device and a power feed line. The first voltage converter may include a first reactor, a first upper switching element, a first lower switching element and a first shutoff device. The first shutoff device may be provided in a first path between the other end of the first reactor and a connection point. The connection point may be a connection point between the power feed line and the second supply line. The first shutoff device may be configured to shut off the first path when short circuit failure occurs in the first upper switching element.

Abstract: A solder degradation information generation apparatus related to a motor drive circuit that includes a power supply, a converter, a smoothing capacitor, and an electric motor is disclosed. The solder degradation information generation apparatus includes a semiconductor element that forms an upper arm of the converter and is bonded to a substrate via a solder, the substrate being cooled by a coolant, a measuring unit configured to measure a temperature of the semiconductor element and a processing device that generates information indicating a degradation state of the solder based on a measurement result of the measuring unit that is obtained during a period in which the smoothing capacitor is charged.

Abstract: In the case where an on-fixation failure occurs in one of transistors of an inverter, a shutdown signal GSDWN or MSDWN is output as ON signal for a duration of adjusting time since switching of a fail signal GFINV or MFINV to ON signal. After elapse of the adjustment time, the shutdown signal GSDWN or MSDWN is switched to OFF signal. The adjustment time is set to be longer than a time duration until completion of shutdown of the inverter but to be shorter than a time duration until start of emergency drive control. This allows for cancellation of shutdown of the inverter even when an abnormal signal is continuously output due to a failure of a sensor or the like. This causes emergency drive to be more reliably performed with three-phase on-control including a transistor having an on-fixation failure after shutdown of the inverter.

Abstract: A power supply apparatus is provided which includes a power supply; a DC/DC converter including a switching element of an upper arm, a switching element of a lower arm and a reactor; a first switch provided between the switching element of the lower arm and the negative electrode of the power supply, the first switch being normally closed; a power supply fuse provided between the positive electrode of the power supply and the other end of the reactor; a second power supply fuse connected to the power supply fuse in parallel; a second switch connected to the second power supply fuse in series and connected to the power supply in parallel, the second switch being normally opened; and a controller that opens the first switch and closes the second switch upon a short circuit failure of the switching element of the lower arm being detected.