Abstract: An inverter-integrated electric compressor in which noise interference with an inverter circuit section due to electromagnetic noise generated from high-voltage-system components can be reliably eliminated without impairing the ease of assembly and a reduction in size. In an inverter-integrated electric compressor (1) provided with an inverter accommodating section (9) on the periphery of a housing (2) and an inverter (20) provided therein, the inverter accommodating section (9) is divided into a first accommodating section (9) accommodating an inverter module (21) equipped with a power system board on which semiconductor switching devices etc. are mounted and a CPU board on which a control and communication circuit etc.

Abstract: An offset distance of an obstacle from a traveling-path center line of a vehicle at the time the obstacle is detected is calculated, and then this offset distance of the obstacle from the traveling-path center line of the vehicle is corrected based on a turning radius of the traveling vehicle detected at the time a specified period of time has lapsed. Thereby, even in a case where the vehicle travels on a road with a curve that changes a radius of curvature of the traveling-path center line (turning radius of the traveling vehicle) quickly during the specified period of traveling time, the above-described offset distance can be properly corrected based on an updated turning radius of the traveling vehicle. Thus, a relative position of the obstacle with respect to the vehicle can be predicted accurately.

Abstract: An inverter-integrated vehicle-air-conditioner electric compressor capable of eliminating malfunctions or the like due to electromagnetic noise interference and improving the reliability is provided. In a vehicle-air-conditioner electric compressor with which an inverter unit is integrated, lead-out positions of low-voltage cables and connectors for supplying a low voltage from a low-voltage power supply to a circuit on a low-voltage ground LV are provided either in a side surface opposite to a mounting position of high-voltage components and high-voltage cables for supplying a high voltage from a high-voltage power supply to a power system circuit on a high-voltage system ground HV; or at an end farthest away from the mounting position of the high-voltage cables and the high-voltage components in an adjacent side surface or the same side surface.

Abstract: The present invention has an object to provide a control device for an electric compressor and a start control method of an electric compressor that can smoothly and reliably start the electric compressor even at high temperature. Even in a high temperature state of a power transistor, a rotational speed or an acceleration rate of a motor according to the temperature is set to gradually start the electric compressor. After the commencement of the start, the temperature of the power transistor is repeatedly checked for every predetermined time to update the rotational speed or the acceleration rate of the motor, and the rotational speed or the acceleration rate of the motor is increased according to the temperature of the power transistor, thereby allowing quick start. When a refrigerant starts to flow in a housing of the electric compressor with the start, a control board is cooled and the temperature of the power transistor decreases, and thus a synergistic effect can be obtained.

Abstract: In an inverter control apparatus in which a control circuit board is fixed by use of pin-like terminals provided in a power board, the breakage of the pin-like terminals is prevented. The power board 160 is provided with a plurality of signal transmission terminals 210a, 210b, 220a, 220b for signal transmission to and from the control circuit board 150 and for grounding along each of a pair of opposed sides, the control circuit board 150 is electrically connected to the plurality of signal transmission terminals 210a etc. and is fixed by soldering to the plurality of signal transmission terminals 210a etc., and the plurality of signal transmission terminals 210a etc. are arranged along each of the pair of sides in a plurality of rows.

Abstract: Provided is an inverter-integrated electric compressor capable of reducing the size of an inverter accommodating section by modularizing a power circuit board and a control board and further reducing the size of an inverter device, as well as an accommodating section thereof, by improving the positional structure with respect to other electrical components. An inverter-integrated electric compressor including an inverter accommodating section provided on a periphery of a housing accommodating an inverter device includes an inverter module constructed by integrally modularizing a power circuit board and a control board, wherein attachment legs provided on both edges of at least one side surface of the inverter module protrude outward from a module main body, and the inverter module accommodates the inverter accommodating section with the attachment legs positioned in spaces at both ends of a glass-insulated terminal.

Abstract: Provided is a highly reliable inverter-integrated electric compressor that is capable of suppressing electromagnetic noise interference from a power-system metal board on which a semiconductor switching devices are bare-mounted and preventing malfunction of the inverter device. In an inverter-integrated electric compressor in which an inverter accommodating section provided on a housing accommodates an inverter device, the inverter device includes an inverter module in which a power-system metal board on which at least semiconductor switching devices are bare-mounted and a CPU board on which is mounted a control and communication circuit having a device operating at low voltage, such as a CPU, are modularized via a resin case, wherein the inverter module has a metal shield plate supported by the resin case and interposed between the power-system metal board and the CPU board.

Abstract: An inverter-integrated electric compressor in which it is possible to make an inverter device and an inverter accommodating section small and compact and which, at the same time, has high reliability enabling interference of electromagnetic noise from a high-voltage bus-bar to be suppressed is provided. An inverter-integrated electric compressor in which an inverter accommodating section is provided on a periphery of a housing, and an inverter device is accommodated inside thereof, wherein the inverter device includes a power circuit board and a control board wherein a high-voltage bus-bar connecting a high-voltage line and high-voltage components disposed in the interior of the inverter accommodating section is disposed in a space above the power circuit board and the control board, and wherein a shield plate is provided between the high-voltage bus-bar and an inverter module.

Abstract: There is provided an electric compressor that can protect a component to be protected from heat damage according to a capability of the component. The electric compressor 10 includes a compression mechanism 11, an electric motor 12 that drives the compression mechanism 11, and a control portion 13 that controls to drive the electric motor 12, incorporated into a single casing, and further includes a temperature detector 14 that detects a temperature of one or more components that constitute one or both of the control portion 13 and the electric motor 12, and a current detector 15 that detects a current flowing through the component.

Abstract: The object is to provide an integrated compressor that enables a control board to be miniaturized while ensuring a layout in which the heat radiation of parts is considered. Diodes 43 and IGBTs 42 that correspond to each of the U-phase, V-phase and W-phase are arrayed in series for each phase. Rectangular chips are used for the diodes 43 and IGBTs 42. As a result of this, a power board 16 is substantially miniaturized, and the diode 43, the IGBT 42, a P-terminal electrode pattern 40, an N-terminal electrode pattern 41, a shunt resistor 44, output terminal patterns 48U, 48V, 48W, and a feed pattern 50 are disposed so as to lie in a region in contact with an outer surface of a housing.

Abstract: An integrated-inverter electric compressor is provided, in which a change of the combination of weld plating layers provided on weld surfaces of an electrical connection terminal of an inverter can be allowed for easily. In an integrated-inverter electric compressor in which an inverter is integrally fitted to a compressor housing and an electrical connection terminal that electrically connects the inverter to an electric motor and/or an external power source is provided, one end of the electrical connection terminal has a wire-bonding weld surface for the inverter, the wire-bonding weld surface being provided with a weld plating layer for welding a bonding wire thereto, whereas the other end of the electrical connection terminal has weld surfaces for the electric motor and/or the external power source, the weld surfaces of two sides being respectively provided with different weld plating layers for connecting lead wires, bus bars, or terminals thereto.

Abstract: There is provided a control device of a permanent-magnet type synchronous motor that sets a synchronous operation current at start-up in response to a current limiting value determined from the temperature of an inverter that supplies three-phase power to the permanent-magnet type synchronous motor, that monitors an output voltage or an output current of the inverter during a rotation stabilizing period after start-up, and that updates the synchronous operation current using this output voltage or output current.

Abstract: The present invention has an object to provide an on-vehicle air conditioner that can prevent breakage or the like caused by applying a high voltage. In an inverter system 20 that controls an operation of a motor 30 of a compressor for the on-vehicle air conditioner, a motor control microcomputer 24 operates by converting a voltage supplied from an on-vehicle battery power source 50 into a low voltage. Thus, the motor control microcomputer 24 is operated to perform failure diagnosis of a high voltage circuit Cb without a high voltage power source 40 being turned on. The failure diagnosis can be performed without power being supplied from the high voltage power source 40 to the high voltage circuit Cb, thereby preventing the high voltage circuit Cb from being broken by applying the high voltage even when there is some failure in the high voltage circuit Cb.

Abstract: There is provided an integrated electric compressor that is improved in reliability. Bus bar connection is employed for electrical connection between a power board 16 and the power source side and between the power board 16 and the motor side, and welding is employed for joining a bus bar to a capacitor 13 and a reactor 14, for joining board-side terminal parts of the bus bar to PN terminals 20a and 20b, and for joining UVW terminals 25a, 25b and 25c to housing-side terminals 28a, 28b and 28c. By employing resistance welding for the welding, the terminals can be joined to each other with stabilized quality. Further, since flat joint plates are provided on one end side of the housing-side terminals 28a, 28b and 28c, and the UVW terminals 25a, 25b and 25c are welded thereto, reliable joints between terminals can also be attained in these portions.

Abstract: A radar device is configured to transmit an electric wave and receives a reflected wave that is generated by a reflection of the electric wave on an object, and to recognize the object is a potential obstacle that is to be hit by the vehicle when a received intensity of the reflected wave thereby is a specified threshold or more. And, the specified threshold has a plurality of preset values. Accordingly, a determination as to whether or not the obstacle detected by the radar device is the potential obstacle to be hit by the vehicle can be accurately made.

Abstract: There is provided an apparatus for controlling an electric compressor, which can actuate the electric compressor rapidly through a simpler and lower-cost configuration while achieving reduction in weight, cost, and assembling time of the electric compressor. In the case where a pressure difference between the inlet side and the outlet side of the compressor body is present when a motor of the electric compressor is actuated, the motor is actuated at a number of revolutions lower than that in the normal mode. Thereby, even if a refrigerant has been liquefied on the outlet side of the compressor body, for example, the motor can be actuated by performing such action as to push out the liquefied refrigerant. In this case, the number of revolutions of the motor is increased by being changed stepwise or linearly, by which the number of revolutions of the motor is caused to reach a required number of revolutions as early as possible while surely performing the actuation.

Abstract: An integrated-inverter electric compressor whose grounding effect and grounding reliability are increased by reliably grounding an inverter device to a housing and in which the size the inverter device are reduced by simplifying the grounding structure is provided. The integrated-inverter electric compressor includes an inverter device provided in an inverter container on the outer circumference of a housing.

Abstract: The invention provides an integrated-inverter electric compressor and an inverter device thereof which allow handling of the inverter device by neither touching nor holding a CPU substrate. An integrated-inverter electric compressor includes an inverter module integrating a power-related metal substrate on which a power semiconductor switching device is mounted and a resin case integrally insert-molded with a plurality of terminals, and is provided with a CPU substrate on which a control and communication circuit having a device that operates at low-voltage is mounted on the upper surface of the inverter module, wherein the resin case is integrated with a grip which extends in a horizontal direction at an upper edge of a circumference thereof.

Abstract: The object is to provide an inverter system for a vehicle-mounted air conditioner capable of reducing standby power requirements during nonuse. The voltage supply from a communication power source 80 is turned on and off on the basis of a signal from a communication driver 27a and an electric switch is changed over, whereby the voltage supply from a vehicle-mounted battery power source 50 to a DC-DC converter 26 is turned on and off and the voltage supply to a motor-control microcomputer 24 and a gate circuit 22 is turned on and off. As a result of this, during nonuse the operating state of the motor-control microcomputer 24 is shifted to a sleep mode by performing control by a host ECU 60, whereby the voltage supply is suspended and it becomes possible to reduce power consumption.

Abstract: The present invention has an object to provide an inverter system for a vehicle-mounted air conditioner that prevents noise from entering a control circuit and allows high speed communication. A motor control microcomputer 24 is isolated from a gate circuit 22, and communication therebetween is performed via a photocoupler 80. This suppresses the influence of noise resulting from changes caused by changes in voltage and current that occur in a high voltage system for driving a motor 30. Also, the motor control microcomputer 24 and a communication driver 27 can be directly bus-connected without a photocoupler, thereby allowing high speed communication therebetween.