Abstract: A semiconductor device of embodiments includes a first electrode, a second electrode, an oxide semiconductor layer between the first electrode and the second electrode, a gate electrode, a first insulating layer, a second insulating layer, and a gate insulating layer. Assuming that the thickness of the gate insulating layer between the first insulating layer and the oxide semiconductor layer is a first thickness, the thickness of the gate insulating layer between the second insulating layer and the oxide semiconductor layer is a second thickness, the thickness of the gate insulating layer between a first end of the gate electrode is a third thickness, and the thickness of the gate insulating layer between a second end of the gate electrode and the oxide semiconductor layer is a fourth thickness, the second thickness is larger than the first thickness or the fourth thickness is larger than the third thickness.

Abstract: According to one embodiment, a method for manufacturing a semiconductor device includes forming an electrode layer on a film containing indium and etching portions of the electrode layer left exposed by a mask layer until at least a portion of the film is exposed. A spacer film is formed to cover an upper surface of the electrode layer, side surfaces of the electrode layer, and an exposed upper surface of the film. The spacer film on the upper surface of the electrode layer and the exposed upper surface of the film is removed while leaving the spacer film on the side surfaces of the electrode layer. The exposed upper surface of the film is exposed to a reductive gas plasma to reduce portions of the film. These reduced portions of the film are then etched with a chemical solution.

Abstract: A semiconductor device of embodiments includes: a first electrode; a second electrode; a first oxide semiconductor layer between the first electrode and the second electrode; a second oxide semiconductor layer separated from the first oxide semiconductor layer in a second direction perpendicular to a first direction connecting the first electrode and the second electrode; and a gate electrode surrounding the first oxide semiconductor layer and the second oxide semiconductor layer and extending in the second direction. The gate electrode includes a first portion and a second portion. The first portion faces the first oxide semiconductor layer and is in contact with the gate insulating layer in the second direction, and has a first length in the first direction. The second portion is away from the first oxide semiconductor layer in the second direction and has a second length in the first direction smaller than the first length.

Abstract: A semiconductor device includes an upper electrode, a lower electrode, an oxide semiconductor including a first portion connected to the upper electrode, a connection portion, a second portion that is connected to a lower end portion of the first portion through the connection portion, has a diameter larger than that of the lower end portion of the first portion, and connected to the lower electrode, a gate insulating film surrounding a side surface of the first portion and has an outer diameter smaller than that of the second portion, a first insulating layer through which the first portion penetrates, a gate electrode which is provided below the first insulating layer and faces the first portion via the gate insulating film, the first portion penetrating through the gate electrode, and a second insulating layer provided below the gate electrode, wherein the connection portion is surrounded by the second insulating layer.

Abstract: An electric vehicle includes: a mounted object operated by power; and a vehicle body equipped with the mounted object, in which the vehicle body includes: a battery that supplies power to an electric motor for operation of the vehicle body; a first power supply line that supplies the power from the battery to the mounted object; a first protection circuit that is installed on the first power supply line and that is capable of cutting off the power; and a control section that controls an operation of the first protection circuit, and the mounted object includes: a second power supply line that is connected to the first power supply line; a load that receives the power via the second power supply line; and a second protection circuit that is installed on the second power supply line and that is capable of cutting off the power.

Abstract: A precharge apparatus includes a first battery, an electric circuit configured to be supplied with electric power from the first battery, a relay configured to switch electric power supply from the first battery to the electric circuit, a second battery, and a control section configured to control exchange of electric power among the relay, the second battery, and the electric circuit, wherein the control section causes the second battery to supply electric power to the electric circuit while the relay is in an open state, and when a voltage level of the electric circuit reaches a predetermined value or higher, controls the relay to a closed state.

Abstract: An electric vehicle including: a battery; a first power supply line that supplies the power from the battery to a mounted object; a first protection circuit that is capable of supplying and cutting off the power via the first power supply line by closing or opening; a third power supply line that supplies the power from a quick charger placed outside the vehicle body to the battery, a third protection circuit that is capable of supplying and cutting off the power via the third power supply line by closing or opening; a first detection section that detects a state of the first protection circuit; a third detection section that detects a state of the third protection circuit; and a battery management section that executes, control transmission of an error signal of the first detection section and/or an error signal of the third detection section to a vehicle control section.

Abstract: A sticking diagnosis apparatus for diagnosing a presence of sticking at a positive-electrode relay and at a negative-electrode relay, the sticking diagnosis apparatus including an obtaining section that obtains, a first voltage value that is a voltage between a point downstream of the positive-electrode relay and a point upstream of the negative-electrode relay and a second voltage value that is a voltage of a diagnosis circuit provided in parallel to the negative-electrode relay; a determination section that when the first voltage value is greater than or equal to a first threshold, determines that the positive-electrode relay is in a state in which the positive-electrode relay remains in the closed state, and when the second voltage value is less than or equal to a second threshold, determines that the negative-electrode relay is in a state in which the negative-electrode relay remains in the closed state.

Abstract: An electric vehicle includes: a third power supply line that supplies power from a quick charger placed outside the vehicle body to a battery, a positive-side line being on an upstream side of a current flowing from the quick charger to the battery, a negative-side line being on a downstream side the current flowing from the quick charger to the battery; a third protection circuit that is capable of cutting off the power via the third power supply line by electrically disconnecting the positive-side line and/or the negative-side line; and a control section that executes control for electrically disconnecting between the battery and the third power supply line when determining, based on a detection result of a third detection section, that the third protection circuit is in a state where each of the positive-side line and the negative-side line is not disconnectable.

Abstract: A relay welding diagnosing apparatus can lower a risk of erroneous diagnosis while preventing energy of a battery from being discharged uselessly. The relay welding diagnosing apparatus including a positive electrode side relay, a negative electrode side relay, and a capacitor and a load circuit that are connected in parallel between the positive electrode side relay and the negative electrode side relay, which is forced discharge, by connecting the capacitor and the load circuit; and a determining section that, in a case where the negative electrode side relay is not welded, determines whether or not the positive electrode side relay is welded after the active discharge is performed and, in a case where the negative electrode side relay is welded, determines whether or not the positive electrode side relay is welded after passive discharge of the capacitor, which is natural discharge, is performed.

Abstract: A correction amount specifying apparatus comprises circuitry for storing diffraction data including a combination of the diffraction angle of the irradiation X-rays with respect to the sample rotation angle and the sample surface height, the diffraction data being acquired by irradiating X-rays to a standard sample that is an aggregate of isotropic and stress free crystal particles, determining a first correspondence relationship based on the diffraction data, and specifying a correction amount of the sample surface height with respect to a desired sample rotation angle and a desired diffraction angle based on the first correspondence relationship.

Abstract: Provided is a charge control device with which the charge amount of a battery is easily raised. This charge control device comprises: a connection unit for connecting a plurality of batteries in parallel to a charger connected to a vehicle; an acquisition unit for acquiring the voltage of the plurality of batteries; and a control unit for calculating a difference in potential between a connected battery that is connected to the charger and an unconnected battery that is not connected to the charger, among the plurality of batteries, on the basis of the voltage acquired by the acquisition unit and controlling the connection unit so as to furthermore connect the unconnected battery to the charger when the difference in potential is not within a prescribed potential range.

Abstract: A charging system is a charging system for supplying power to a battery for driving an electric vehicle from a rapid charger installed outside the electric vehicle, the system including: a constant current charging control section that executes constant current charging control that supplies power from the rapid charger to the battery based on a constant charging current value; and a constant voltage charging control section that, in a case where a voltage value of the battery reaches a predetermined target voltage value and the constant current charging control is stopped, executes constant voltage charging control that supplies power from the rapid charger to the battery two or more times based on a constant charging voltage value.

Abstract: A control apparatus for an electric motor that can improve ride comfort and operation stability is provided. The control apparatus includes: a rotor provided with one of a permanent magnet and a winding; and a stator provided with the other of the permanent magnet and the winding. The control apparatus includes a control part. When a temperature of the winding is lower than a predetermined temperature at activation of the electric motor, the control part controls a d-axis current to increase the temperature of the winding. When a rotation torque due to the d-axis current is generated at the rotor, the control part controls a q-axis current such that a rotation torque with the same magnitude as that of the rotation torque due to the d-axis current in a direction opposite to a direction of the rotation torque due to the d-axis current is generated at the rotor.

Abstract: A wiring structure that can prevent generation of radio noise is provided. A wiring structure includes: two electrical/electronic components mounted in a vehicle, and including respective shield cases connected to a chassis ground; and a shield wire including a center conductor, and an outer conductor covering an outer periphery of the center conductor. Both ends of the shield wire are extended to the shield cases, at least one of the shield cases includes an insulation part, and the outer conductor of one end of the shield wire extended to the at least one of the shield cases is connected to the insulation part.

Abstract: An electric vehicle includes: a third power supply line that supplies power from a quick charger placed outside the vehicle body to a battery, a positive-side line being on an upstream side of a current flowing from the quick charger to the battery, a negative-side line being on a downstream side the current flowing from the quick charger to the battery; a third protection circuit that is capable of cutting off the power via the third power supply line by electrically disconnecting the positive-side line and/or the negative-side line; and a control section that executes control for electrically disconnecting between the battery and the third power supply line when determining, based on a detection result of a third detection section, that the third protection circuit is in a state where each of the positive-side line and the negative-side line is not disconnectable.

Abstract: An electric vehicle includes: a mounted object operated by power; and a vehicle body equipped with the mounted object, in which the vehicle body includes: a battery that supplies power to an electric motor for operation of the vehicle body; a first power supply line that supplies the power from the battery to the mounted object; a first protection circuit that is installed on the first power supply line and that is capable of cutting off the power; and a control section that controls an operation of the first protection circuit, and the mounted object includes: a second power supply line that is connected to the first power supply line; a load that receives the power via the second power supply line; and a second protection circuit that is installed on the second power supply line and that is capable of cutting off the power.

Abstract: A precharge apparatus includes a first battery, an electric circuit configured to be supplied with electric power from the first battery, a relay configured to switch electric power supply from the first battery to the electric circuit, a second battery, and a control section configured to control exchange of electric power among the relay, the second battery, and the electric circuit, wherein the control section causes the second battery to supply electric power to the electric circuit while the relay is in an open state, and when a voltage level of the electric circuit reaches a predetermined value or higher, controls the relay to a closed state.

Abstract: An electric vehicle including: a battery; a first power supply line that supplies the power from the battery to a mounted object; a first protection circuit that is capable of supplying and cutting off the power via the first power supply line by closing or opening; a third power supply line that supplies the power from a quick charger placed outside the vehicle body to the battery, a third protection circuit that is capable of supplying and cutting off the power via the third power supply line by closing or opening; a first detection section that detects a state of the first protection circuit; a third detection section that detects a state of the third protection circuit; and a battery management section that executes, control transmission of an error signal of the first detection section and/or an error signal of the third detection section to a vehicle control section.

Abstract: A semiconductor device of embodiments includes: a first electrode; a second electrode; an oxide semiconductor layer between the electrodes; a gate electrode surrounding the oxide semiconductor layer; a gate insulating layer between the gate electrode and the oxide semiconductor layer and spaced from the first electrode; a first insulating layer between the first electrode and the gate electrode, the gate insulating layer between the first insulating layer and the oxide semiconductor layer; and an intermediate layer between the first electrode and the first insulating layer, including a first region and a second region between the first region and the first insulating layer. The first region contains a first metal element and oxygen, the second region contains a second metal element, and an oxygen concentration in the second region is lower than that in the first region.