Abstract: A motor-driven compressor that includes a metal housing accommodating a compression unit and an electric motor, a cover coupled to the housing, wherein the cover includes a resin portion and a metal shield, and the shield blocks electromagnetic noise, and a bolt that couples the cover to the housing. The housing and the cover define an accommodating chamber that accommodates a motor driving circuit that drives the electric motor. The cover includes an insertion hole into which the bolt is insertable. The shield includes a seat that surrounds the insertion hole and is held between the bolt and the housing. The cover is configured to allow for an axial force of the bolt to be applied to the seat and not to the resin portion.

Abstract: An electric compressor has a hermetic terminal unit that is electrically connected to a motor side wire and a drive circuit side wire and inserted through a through hole formed through a separation wall separating a motor chamber and an accommodating chamber. The hermetic terminal unit has a first connecting terminal that is electrically connected to the motor side wire and elastically deformable, a second connecting terminal that is electrically connected to the drive circuit side wire and elastically deformable, and a conductive member that is fitted to the first connecting terminal and the second connecting terminal and electrically connects the first connecting terminal and the second connecting terminal. The first connecting terminal is elastically deformed and holds the motor side wire by a restoring force thereof. The second connecting terminal is elastically deformed and holds the drive circuit side wire by a restoring force thereof.

Abstract: An electric compressor includes a compression mechanism, an electric motor, an inverter, a housing, and a cover attached to the housing to accommodate the inverter between the cover and the housing. The cover is constituted of a metal frame portion and a resin portion covering the frame portion to surround surfaces of the frame portion. The frame portion has a plate-like portion and a peripheral wall portion extending from an outer peripheral edge of the plate-like portion toward the housing. The peripheral wall portion has concaves and convexes including at least one of a concave portion recessed in a thickness direction of the plate-like portion and a convex portion protruding in the thickness direction of the plate-like portion, at an end portion which is far from the plate-like portion. The resin portion is engaged with the concaves and convexes.

Abstract: An electric compressor includes a compression mechanism for compressing a fluid, an electric motor for driving the compression mechanism, an inverter for driving the electric motor, a housing for housing the compression mechanism and the electric motor, a cover attached to the housing to house the inverter between the cover and the housing, and an impact-resistant member attached to the housing. The impact-resistant member includes a projecting portion arranged at a position spaced from the cover and the housing, and a spacer portion extending from the projecting portion toward the housing. The spacer portion is bonded to the housing to straddle an outer periphery of the cover. The impact-resistant member is attached to the housing by bonding the spacer portion to the housing.

Abstract: A motor-driven compressor includes a compression portion, which compresses a fluid, an electric motor, which drives the compression portion, a drive circuit, which drives the electric motor, a temperature obtaining section, which obtains the temperature of the drive circuit, and a drive mode controller, which controls the drive mode of the drive circuit. The drive mode controller controls the drive mode based on the temperature obtained by the temperature obtaining section and at least one of the rotational speed and the modulation factor of the electric motor.

Abstract: A motor-driven compressor includes an electric motor, a drive circuit, a modulation method controller, a temperature measuring section, a high-temperature (HT) stop controller, and a high-temperature (HT) stop temperature setting section. The high-temperature (HT) stop controller stops the electric motor when the temperature measured by the temperature measuring section is higher than or equal to a predetermined high-temperature (HT) stop temperature. When the modulation method is the three-phase modulation, the HT stop temperature setting section sets the HT stop temperature to a three-phase high-temperature (HT) stop temperature. When the modulation method is the two-phase modulation, the HT stop temperature setting section sets the HT stop temperature to a two-phase high-temperature (HT) stop temperature, which is higher than the three-phase HT stop temperature.

Abstract: A motor-driven compressor includes a compression unit, an electric motor, a housing, a cover, wherein the cover includes a main body and a connector coupler, and the cover and the housing define an accommodating chamber, a motor driving circuit that is accommodated in the accommodating chamber and includes a circuit board, and a metal terminal held in the connector coupler, wherein the metal terminal includes first and second end portions. The cover has a shield including a first shield portion, which blocks electromagnetic noise and forms at least part of the connector coupler, and a second shield portion, which blocks electromagnetic noise and forms at least part of the main body. The first and second shield portions are coupled to each other. The second shield portion includes an insertion hole into which one of the first and second end portions of the metal terminal is insertable.

Abstract: An on-vehicle electric compressor for a vehicle includes a compression mechanism compressing a refrigerant, an electric motor driving the compression mechanism and a housing accommodating therein the compression mechanism and the electric motor. The on-vehicle electric compressor further includes a cover fixed to the housing, a motor driving circuit disposed between the housing and the cover and driving the electric motor, and a protecting member protecting the cover against an external force caused when the vehicle has a collision. The protecting member has a contact portion that is contactable with a receiving portion when the external force is applied to the protecting member, the receiving portion having a greater rigidity than the cover to receive the external force through the contact portion.

Abstract: A power supply device includes functional modules, and a main controller that is connected to and controls the modules. Each module includes a battery block, a communication interface, a memory and a battery state detector. The block includes a battery cells that are connected in serial and/or in parallel to each other. The interface exchanges data with other modules or the controllers. The memory can store data exchanged through the interface. The battery state detector can detect at least one of current, voltage and temperature of the block. When the module is connected to the controller, the controller assigns a unique address to the module. The module stores the unique address, which is assigned by the controller, in the memory. The module exchanges data based on the address.

Abstract: According to one of some aspects, a mobile electronic device includes: a communication unit configured to perform short-distance communication with a first device; and a controller configured to perform notification to a user when the short-distance communication with the first device is incapable of being performed.

Abstract: A motor-driven compressor includes an electric motor driven by a motor driver, which includes a switching element that converts DC voltage from a battery to AC voltage. A control unit controls the switching operation of the switching element. A temperature detector detects the temperature of the switching element. A voltage detector detects DC voltage applied to the switching element from the battery. The control unit suspends the switching operation of the switching element when the temperature detected by the temperature detector rises to a predetermined temperature threshold. The control unit also reduces counter electromotive force generated by the electric motor. The temperature threshold includes a first temperature threshold, corresponding to a withstand temperature of the switching element, and a second temperature threshold, which is higher than the first temperature threshold. The control unit switches the temperature threshold between the first and second temperature thresholds.

Abstract: A motor-driven compressor includes an electric motor driven by a motor driver, which includes a switching element that converts DC voltage from a battery to AC voltage. A control unit controls the switching operation of the switching element. A temperature detector detects the temperature of the switching element. The control unit suspends the switching operation of the switching element when the temperature detected by the temperature detector rises to a temperature threshold. The temperature threshold includes a first temperature threshold, corresponding to a withstand temperature of the switching element, and a second temperature threshold, which is higher than the first temperature threshold. The control unit switches the temperature threshold from the first temperature threshold to the second temperature threshold when the control unit activates a field weakening control that reduces counter electromotive force generated by the electric motor.

Abstract: A motor-driven compressor includes an electric motor driven by a motor driver, which includes a switching element that converts DC voltage from a battery to AC voltage. A temperature detector detects the temperature of the switching element. A voltage detector detects DC voltage applied to the switching element from the battery. A control unit suspends the switching operation of the switching element when the detected temperature rises to a temperature threshold. The control unit reduces counter electromotive force generated by the electric motor. The controller changes the temperature threshold such that the temperature threshold gradually increases from when the detected DC voltage is the highest voltage in the applicable voltage range of the battery to when the detected DC voltage is the lowest voltage in the applicable voltage range.

Abstract: An electronic device is provided with an inclination sensor for computing inclination, a control unit which conducts predetermined control based on a value computed by the inclination sensor, a case which has the inclination sensor and the control unit therein, and a suspension portion for suspending the case, and the control unit controls correction of the reference value of the inclination sensor based on a state where the case is suspended by the suspension portion and still.

Abstract: An electric compressor capable of discharging electric charges of a capacitor is provided. The electric compressor includes: a compressing unit; an electric motor for rotating the compressing unit; a driving circuit for driving the electric motor; a housing for accommodating the compressing unit and the electric motor; and an inverter cover for accommodating the driving circuit. An outline of the electric compressor is formed by the housing and the inverter cover. The driving circuit includes: an inverter circuit for receiving electric power from a power supply line; a capacitor circuit connected between the power supply line and a ground line; and an electrically discharging circuit, connected to the capacitor circuit, for discharging electric charges accumulated in the capacitor circuit. The electric compressor further includes a capacitor cover, disposed inside the inverter cover, for encompassing and accommodating at least the capacitor circuit and the electrically discharging circuit.

Abstract: An electric compressor includes: a compressing unit; an electric motor that rotates the compressing unit; and a driving circuit. The driving circuit includes a filter circuit, an inverter circuit that receives electric power from the power supply line via the filter circuit, and a circuit board on which the inverter circuit is disposed, and a base member (aluminum base) and that supports the circuit board. The filter circuit has an electromagnetic coil and a damping resistor. The damping resistor is fixed to the aluminum base in abutment with the aluminum base. Preferably, the filter circuit is mounted on the circuit board, and the damping resistor has a lead line soldered to the circuit board and is fixed to the aluminum base by a screw. With this, there can be provided the electric compressor capable of effectively cooling the damping resistor of the filter circuit.

Abstract: An electric compressor includes a housing accommodating therein a compression mechanism and an electric motor which drives the compression mechanism through a rotating shaft thereof, and an inverter cover which is joined to the housing and accommodates therein an inverter circuit portion. The inverter circuit portion is supported by a base member which is mounted to the housing and includes electrolytic capacitors mounted to the base member in such an orientation that the longitudinal direction of the electrolytic capacitors intersect the axis of the rotating shaft and a capacitor holder for housing the electrolytic capacitors. The electrolytic capacitors and the capacitor holder are disposed at a position radially inward of mounting legs of the base member and also radially inward of an imaginary extension extending in the axial direction.

Abstract: A motor-driven compressor includes a metal housing accommodating a compression unit and an electric motor and a cover coupled to the housing. The cover and the housing define an accommodation chamber that accommodates a motor driving circuit that drives the electric motor. The cover includes a metal shield that blocks electromagnetic noise, a resin outer insulator that is fixed to an outer side of the shield and includes an outer circumferential portion, and a resin inner insulator that is fixed to an inner side of the shield and includes an outer circumferential portion. The shield, the outer insulator, and the inner insulator are separate from one another and stacked together. The shield is held between the outer insulator and the inner insulator. The outer circumferential portion of the outer insulator is joined to the outer circumferential portion of the inner insulator.

Abstract: According to an aspect, an electronic device includes: a piezoelectric element; a first sound generating unit that is vibrated by the piezoelectric element and generates a vibration sound transmitted by vibrating a part of a human body; and a second sound generating unit that generates an air conduction sound.

Abstract: A motor-driven compressor includes a metal housing accommodating a compression unit and an electric motor and a resin cover coupled to the housing. The cover and the housing define an accommodation chamber that accommodates a motor driving circuit that drives the electric motor. A metal shield is fixed to the cover and blocks electromagnetic noise. The shield and the cover are stacked together. A sealing member located between the shield and the cover. The sealing member is configured to block entry of foreign matter into the accommodation chamber through a gap between the shield and the cover.