Mitsubishi Heavy Industries Limited

Mitsubishi Industries, Ltd.

Takayuki Watanabe

Takeshi Hirano

Yuki Ichise

Takashi Nakagami

Takayuki Hagita

Koji Nakano

Akinori Yoshioka

Masayuki Ishikawa

Makoto Hattori

Manabu Suzuki

Minoru Kawada

Koji Toyama

Hiroyuki Kamitani

Kazuki Niwa

Hidetaka Sato

Ichiro Yogo

Noriaki Arashi

Naoto Kunieda

Kazunori Teshima

Yukihiro Sakaguchi

Hisashi Murabayashi

In an inverter-integrated electric compressor () provided with an inverter accommodating section () on the periphery of a housing () and an inverter () provided therein, the inverter accommodating section () is divided into a first accommodating section () accommodating an inverter module () 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. are mounted, and a second accommodating section () accommodating high-voltage-system components (), such as a common-mode coil (), a normal-mode coil (), and a smoothing capacitor (), provided on a high-voltage line () for supplying DC power from a high-voltage power supply to the inverter module (), the accommodating sections () and () being separately provided on the periphery of the housing ().

Inverter-integrated electric compressor

In an inverter in which noise reducing coils and a smoothing capacitor are provided on a power line to an inverter module to achieve a no-busbar configuration, simplification of the manufacturing process, reduction of the influence on the size of the inverter, enhanced noise reducing function, reduction in cost and so on, the smoothing capacitor is electrically connected, on the inverter module, to the power line in parallel with a power system board, and the noise reducing coils are connected to the power line by directly connecting output lead wires thereof to P-N terminals of the inverter module.

Inverter and integrated-inverter electric compressor

Provided is an electric compressor for car air conditioning that allows insulation and airtightness to be ensured at a terminal part thereof. Provided are an opening () through which a motor section in a casing communicates with a control section; an insulating terminal () closing off the opening (); a plurality of first wires () arranged substantially on a straight line, penetrating the insulating terminal (), and extending toward the motor section and the control section; a plurality of second wires electrically connected to at least one of the motor section and the control section; plate-shaped male terminals () electrically connected to one of the first wires () and the second wires; and female terminals electrically connected to the other of the first wires () and the second wires, each including a plate portion extending in a plate shape and securing portions disposed at both ends of the plate portion, the male terminals () being secured between the plate portions and the securing portions, and the male terminals () and the plate portions of the female terminals are disposed so as to extend across the straight line at an acute or obtuse angle.

Electric compressor for car air conditioning

Disclosed is an in-vehicle integrated-inverter electric compressor () in which an inverter accommodating section () is provided on the periphery of a housing (), an inverter device is installed in the inverter accommodating section (), and the opening portion of the inverter accommodating section () is sealed by means of a cover member () to be fixed with screws. A safety mechanism () is provided such that some of the fixing screws () fixing the cover member () to the inverter accommodating section () cannot be removed when the electric compressor () is mounted in a vehicle.

In-vehicle integrated-inverter electric compressor

An object is to provide a highly reliable vehicle-air-conditioner electric compressor of an inverter-integrated type that minimizes vibration and deformation of a board and a bus bar caused by vibration of a vehicle so as to prevent devices from becoming detached, to prevent soldered sections and welded sections from rupturing, and to prevent short circuits from occurring. In a vehicle-air-conditioner electric compressor () in which an inverter accommodating section () is provided at a periphery of a housing () and an inverter () is accommodated inside the inverter accommodating section (), a control board () constituting the inverter () is screwed to fixing-screw base surfaces () provided at a plurality of locations of the inverter accommodating section (), and a base () that has the same height as the fixing-screw base surfaces () and supports the control board () near substantially a midpoint of a fixing-screw pitch on the control board () and/or near a position where a large component is disposed on the control board () is provided at one or more locations of the inverter accommodating section ().

Vehicle-air-conditioner electric compressor

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.

There is provided a vehicle-air-conditioner electric compressor in which a high-voltage short circuit due to the breakage of a high-voltage system including an inverter is prevented in the event of a crash, thereby improving safety. In a vehicle-air-conditioner electric compressor () including an inverter accommodating section () at the periphery of a pressure-resistant housing () in which an electric motor and a compressing mechanism are accommodated, the inverter accommodating section () accommodating an inverter () that converts direct-current power supplied from a high-voltage power source to three-phase alternating-current power and feeds the power to the electric motor in the pressure-resistant housing () through glass-sealed terminals (), wherein in a vehicle-mounted state, the inverter accommodating section () and the inverter () are offset to the rear of a vehicle with respect to the front-surface portion (A), facing the front of the vehicle, of the pressure-resistant housing.

Vehicle-air-conditioner compressor

An inverter-integrated electric compressor that is capable of solving various problems caused by thermal expansion of a gel material filled inside an inverter accommodating section for vibration prevention and moisture prevention and capable of increasing reliability is provided. In the inverter-integrated electric compressor, an inverter accommodating section () is integrated with a periphery of a housing () accommodating an electric compressor; an inverter device () is accommodated inside the inverter accommodating section; a gel material () for vibration prevention and moisture prevention is filled in the upper section thereof so as to leave an air layer (); an upper opening in the inverter accommodating section is sealed with a cover member (); and a vent valve () formed of a moisture-permeable waterproof membrane () is provided in the cover member.

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.

A bus bar structure and an inverter-integrated electric compressor that absorb an impact while ensuring vibration resistance are provided. A bus bar structure used for an inverter-integrated electric compressor having a compressor; an electric motor for driving the compressor; an inverter device for converting DC power from a high-voltage power supply to AC power and supplying it to the motor; and a housing for accommodating the compressor, the electric motor, and the inverter device, the inverter device being formed of a circuit board and an electrical component, and an insulating resin for connecting and wiring the circuit board and the electrical component being applied. The bus bar structure is formed of a main body, which is integrally formed of the insulating resin, and an external connecting portion exposed from the insulating resin, the external connecting portion has a bent extending portion that is bent and extends with respect to the main body, and an elastic portion for absorbing vibration of the bus bar structure is formed in part of the bent extending portion.

Bus bar structure and inverter-integrated electric compressor

To provide an electric compressor in which the occurrence of shrink-fitting failures can be prevented when a stator is shrink-fitted in a motor case. Provided are a casing () in which the inner circumferential surface of the cylinder is provided with a first inner circumference () and a second inner circumference () whose radius is larger than the first inner circumference (), the inner circumference () having an inclination that becomes more distant from a central axis (C) from a bottom face () toward an opening (); a compressing unit that compresses fluid; and a rotor and a stator that rotationally drive the compressing unit, wherein the first inner circumference () and the second inner circumference () are provided with a substantially cylindrical insertion surface () whose radius is larger than the second inner circumference () and in which the stator is inserted; and at least the first inner circumference () is provided with an enlarged diameter portion () whose radius is larger than the insertion surface () and which makes the distance from the end at the opening () side of the insertion surface () to the opening () substantially equal.

Growing community of inventors

Aichi, Japan

Takayuki Watanabe