Abstract: A noise reduction device according to one embodiment includes a noise reduction circuit and a failure diagnosis circuit. The noise reduction circuit generates an offset signal with reverse polarity of a noise component generated in a load. The failure diagnosis circuit detects a level of the offset signal. The failure diagnosis circuit determines whether or not a detected level of the offset signal deviates from an appropriate range. The failure diagnosis circuit diagnoses, on the basis of a determination result, whether or not a failure has occurred in the noise reduction circuit.

Abstract: A power converter according to the present disclosure includes a cooling plate and a plurality of circuit elements. The cooling plate includes a first cooling surface and a second cooling surface on an opposite side from the first cooling surface. The cooling plate is provided with a through hole passing through between the first and second cooling surfaces. The circuit elements convert AC power supplied from an external power source into DC power of a certain voltage and output the DC power. The circuit elements at least include first and second circuit elements. The first circuit element includes a first terminal and is thermally connected to the first cooling surface. The second circuit element includes a second terminal electrically connected to the first terminal and inserted into the through hole, and is thermally connected to the second cooling surface.

Abstract: A vehicle and a stop switch apparatus capable of accommodating various unexpected situations in a software operable vehicle. The vehicle is provided with a first operation section that allows operation of the vehicle without software, a second operation section capable of operating the vehicle by using software, a communicator that communicates with an external apparatus, and a stop switch that is provided physically and operable to stop operation of the second operation section without software.

Abstract: A power converter according to the present disclosure includes a cooling plate and a plurality of circuit elements. The cooling plate includes a first cooling surface and a second cooling surface on an opposite side from the first cooling surface. The cooling plate is provided with a through hole passing through between the first and second cooling surfaces. The circuit elements convert AC power supplied from an external power source into DC power of a certain voltage and output the DC power. The circuit elements at least include first and second circuit elements. The first circuit element includes a first terminal and is thermally connected to the first cooling surface. The second circuit element includes a second terminal electrically connected to the first terminal and inserted into the through hole, and is thermally connected to the second cooling surface.

Abstract: An acquisition unit acquires at least one of first information and second information. A notification unit provides warning information to the driver, the warning information being generated based on at least one of the first information and the second information acquired and indicating a possibility of an increase in an insurance premium of an insurance applied to the driver. An reception unit receives acceptance of the provided warning information from the driver. A processor determines to transmit the acceptance by the driver of the possibility of an increase in the insurance premium to an insurance company server when the acceptance is received and determines to transmit at least one of the first information and the second information to the insurance company server when acceptance is not received.

Abstract: A vehicle driving apparatus includes an inverter which drives a permanent magnet motor. The inverter includes a three-phase bridge circuit including a plurality of switch elements, a drive circuit connected to the three-phase bridge circuit, a control circuit connected to the drive circuit, and an abnormality detecting unit which detects abnormality of the inverter. The drive circuit includes a three-phase-short-circuit-forming circuit which causes three phases of the permanent magnet motor to form short circuits, an abnormality accepting terminal which accepts an abnormality signal output from the abnormality detecting unit, and a check terminal which accepts an active check signal for causing the three-phase-short-circuit-forming circuit to perform three-phase short circuit control.

Abstract: A vehicle driving device includes a permanent magnet motor, an inverter that drives the permanent magnet motor, a DC-to-DC converter that is a buck-boost converter and connected to the inverter, and a driving battery that is connected to the DC-to-DC converter. The DC-to-DC converter outputs, to the inverter, (i) a voltage inputted to the DC-to-DC converter of a positive electrode of the driving battery as-is and (ii) a voltage inputted to the DC-to-DC converter of a negative electrode of the driving battery after increasing the voltage in a negative direction.

Abstract: When the communication circuit receives, from the second electronic device, information indicating application to rent a vehicle by a given user and biological information on the given user, and when the biological information on the given user meets a first condition, the communication circuit outputs information to offer to lend a vehicle of the first rank. When the communication circuit receives, from the second electronic device, information indicating application to rent a vehicle by a given user and biological information on the given user, and when the biological information on the given user meets a second condition different from the first condition, the communication circuit outputs information to offer to lend a vehicle of the second rank.

Abstract: An acquisition unit acquires at least one of first information and second information. A notification unit provides warning information to the driver, the warning information being generated based on at least one of the first information and the second information acquired and indicating a possibility of an increase in an insurance premium of an insurance applied to the driver. An reception unit receives acceptance of the provided warning information from the driver. A processor determines to transmit the acceptance by the driver of the possibility of an increase in the insurance premium to an insurance company server when the acceptance is received and determines to transmit at least one of the first information and the second information to the insurance company server when acceptance is not received.

Abstract: A vehicle driving device includes a permanent magnet motor, an inverter that drives the permanent magnet motor, a DC-to-DC converter that is a buck-boost converter and connected to the inverter, and a driving battery that is connected to the DC-to-DC converter. The DC-to-DC converter outputs, to the inverter, (i) a voltage inputted to the DC-to-DC converter of a positive electrode of the driving battery as-is and (ii) a voltage inputted to the DC-to-DC converter of a negative electrode of the driving battery after increasing the voltage in a negative direction.

Abstract: A vehicle driving apparatus includes an inverter which drives a permanent magnet motor. The inverter includes a three-phase bridge circuit including a plurality of switch elements, a drive circuit connected to the three-phase bridge circuit, a control circuit connected to the drive circuit, and an abnormality detecting unit which detects abnormality of the inverter. The drive circuit includes a three-phase-short-circuit-forming circuit which causes three phases of the permanent magnet motor to form short circuits, an abnormality accepting terminal which accepts an abnormality signal output from the abnormality detecting unit, and a check terminal which accepts an active check signal for causing the three-phase-short-circuit-forming circuit to perform three-phase short circuit control.

Abstract: A vehicle and a stop switch apparatus capable of accommodating various unexpected situations in a software operable vehicle. The vehicle is provided with a first operation section that allows operation of the vehicle without software, a second operation section capable of operating the vehicle by using software, a communicator that communicates with an external apparatus, and a stop switch that is provided physically and operable to stop operation of the second operation section without software.

Abstract: A bus bar connection structure includes a housing, a circuit board including metal, and a bus bar that are disposed in order from a lower side, a lower nut including metal and disposed in an upper surface-side of the housing in a state in which the lower nut is embedded in the housing, and a bolt including metal. On an upper surface of the circuit board, an insulation layer and a copper foil pattern are formed in order from a lower side. An insulation paper piece is disposed between the lower nut and the circuit board. The bolt is screwed into the lower nut in a state in which the bolt is inserted through the insulation paper piece, the circuit board, the insulation layer, the copper foil pattern, and the bus bar. A rotation-preventing part is further provided, the rotation-preventing part preventing the insulation paper piece from rotating due to torque generated during fastening of the bolt.

Abstract: The present disclosure reduces heat concentration on switching elements. A plurality of high-side transistors are connected in parallel to constitute high-side switching element. A plurality of low-side transistors are connected in parallel to constitute low-side switching element. The plurality of high-side transistors are arranged, one by one, next to the plurality of low-side transistors.

Abstract: A bus bar connection structure includes a housing, a circuit board including metal, and a bus bar that are disposed in order from a lower side, a lower nut including metal and disposed in an upper surface-side of the housing in a state in which the lower nut is embedded in the housing, and a bolt including metal. On an upper surface of the circuit board, an insulation layer and a copper foil pattern are formed in order from a lower side. An insulation paper piece is disposed between the lower nut and the circuit board. The bolt is screwed into the lower nut in a state in which the bolt is inserted through the insulation paper piece, the circuit board, the insulation layer, the copper foil pattern, and the bus bar. A rotation-preventing part is further provided, the rotation-preventing part preventing the insulation paper piece from rotating due to torque generated during fastening of the bolt.

Abstract: A conductive layer is provided on one surface to an insulating layer, and has a power-source-side trace, a ground-side trace, and an output-side trace. A first switching element is surface-mounted on the power-source-side trace and connected to the output-side trace. A second switching element is surface-mounted on the output-side trace and connected to the ground-side trace. A capacitor is surface-mounted on the ground-side trace and connected to the power-source-side trace or the output-side trace.

Abstract: The present disclosure reduces heat concentration on switching elements. A plurality of high-side transistors are connected in parallel to constitute high-side switching element. A plurality of low-side transistors are connected in parallel to constitute low-side switching element. The plurality of high-side transistors are arranged, one by one, next to the plurality of low-side transistors.

Abstract: A second motor is connected to a shaft. A power transmission mechanism is configured to transmit power from the shaft and power from a second motor to a driving wheel. A power switching mechanism is connected to a first motor, the shaft, and an internal combustion engine. The power switching mechanism is switchable to a first state in which power transmission between the first motor and the shaft is allowed, a second state in which power transmission between the first motor and the shaft is inhibited and power transmission between the first motor and the internal combustion engine is inhibited, and a third state in which power transmission between the first motor and the internal combustion engine is allowed.

Abstract: A vehicle hybrid system includes a transmission mechanically coupled with an engine, a drive shaft mechanically coupled with the transmission, a rotation-transmitting part coupled with the drive shaft, a power connecting-disconnecting part coupled with the drive shaft via the rotation-transmitting part, a motor generator mechanically coupled with the power connecting-disconnecting part, and a directional power transmission part for transmitting power in a direction from the motor generator to the engine to drive the engine and for not transmitting power in a direction from the engine to the motor generator to drive the motor generator. This vehicle hybrid system has high efficiency.

Abstract: An electromotive drive system including a small motor and a small-capacity battery more effectively improves the fuel economy of an engine-driven vehicle. An electromotive drive system includes: a motor for driving a vehicle; a battery storing electrical energy to rotate the motor; an inverter; a converting mechanism transmitting rotation of the motor to a drive shaft at a predetermined conversion ratio independently of a conversion ratio at which an engine is driven; and a control unit controlling an operation of the inverter. The control unit is configured so that upper vehicle speed limits, to which the motor is allowed to operate, can be set separately during powering and during regeneration, respectively.