Aisin Aw Co., Ltd.

Hiromichi Agata

Tatsuyuki Uechi

Yutaka Hotta

Masayuki Takenaka

Kozo Yamaguchi

Takeshi Hara

Tomoo Atarashi

Kazuo Aoki

Manabu Miyazawa

Masahiro Tanae

Kenji Suzuki

Natsuki Sada

Takahiro Kido

Naruhiko Kutsuna

Akira Suzuki

Tomoyuki Suzuki

Yasushi Nakamura

Tatsuya Kondo

Yoshihiko Minatani

Tomohiko Ito

Daisuke Iimura

Shin Taguchi

Isao Fujishima

Koya Maki

A vehicle drive device that includes a body case that accommodates at least the rotary electric machine; an inverter case joined to the body case; and an inverter case cover joined to the inverter case; wherein an inverter housing that accommodates the inverter device is formed in a space enclosed by at least the inverter case; wherein a connection terminal electrically connecting the rotary electric machine and the inverter device is disposed in the inverter housing; wherein the case outer wall is formed by a first outer wall, a second outer wall, and the inverter case cover, the first outer wall being an outer wall of the body case, the second outer wall being an outer wall of the inverter case; and wherein a supply port and a discharge port for liquid refrigerant for cooling the inverter device are formed on the second outer wall.

Vehicle drive device

An inverter apparatus that includes an inverter that is interposed between an AC rotary electric machine and both a DC power supply and a smoothing capacitor and that includes a plurality of switching elements; a controller that controls driving of the plurality of switching elements; and a current sensor that detects a current flowing through a wire connecting the DC power supply and the inverter together, wherein the controller determines whether or not to stop driving of all of the plurality of switching elements based on the current detected by the current sensor while the AC rotary electric machine is caused to perform a regenerative operation of generating power.

Inverter apparatus

The overall outer shape of a vehicle drive device including an inverter device is reduced in size. An input member and a rotating electrical machine are arranged side by side on a first axis, and a differential gear unit is placed on a second axis. An inverter device is located so as to overlap the differential gear unit as viewed in a radial direction, and is located between a second reference line that extends perpendicularly to a first reference line passing through the first axis and the second axis and that passes through the first axis and a third reference line that extends perpendicularly to the first reference line and that passes the second axis, as viewed in an axial direction.

A drive device includes: an input shaft connected to an engine; a first motor-generator; a second motor-generator; a planetary gear unit including three rotating elements; an output gear connected to the planetary gear unit; an output shaft that transmits rotation of the output gear to a driving wheel; and a control device that controls at least one of the first and second motor-generator. The output gear, the planetary gear unit, and the first motor-generator are coaxial with the input shaft. The planetary gear unit is provided radially inside the first motor-generator and is provided at the same position as the first motor-generator in the axial direction. The second motor-generator is provided on an axis different from the input shaft and the output shaft axes. The control device is provided on the side of the output gear, the planetary gear unit, and the first motor-generator that is opposite the input shaft.

Drive device

A control device for a motor that drives a vehicle and controls the motor by controlling an inverter device that converts a direct voltage, supplied from a direct current source, into an alternating voltage to be supplied to the motor, the control device having a refrigerant temperature detector that detects a refrigerant temperature of a heat exchanger for heat exchange with the inverter device, and a torque restrictor that restricts an output torque of the motor when the inverter device is put in a predetermined state, wherein the torque restrictor changes restrictions on the output torque on the basis of the refrigerant temperature detected by the refrigerant temperature detector.

Control device for motor that drives a vehicle

The present invention relates to an electrical connection device that connects a rotating electrical machine and an inverter within a housing. The electrical connection device is configured with a first bus bar connected to a terminal of the rotating electrical machine such that the first bus bar that is insulated from the housing, and a second bus bar that is connected to a terminal of the inverter device such that the second bus bar is also insulated from the housing. An insulating connection member is configured to connect the first bus bar and the second bus bar. The first bus bar and second bus bar are housed within the housing such that they face each other to form a gap between them. The connection member is configured to pass through a wall of the housing so as to electrically connect the first and second bus bars.

Electrical connection device

An electrical connection structure that includes a first connection portion of the connection member that is fixedly fastened to the first terminal by a fastening bolt, and a second connection portion of the connection member that is connected to the second terminal through an insertable/removable plug, the first connection portion is fixedly fastened to the first terminal by inserting the fastening bolt through an insertion hole provided in one of the connection member and the first terminal, and fastening the fastening bolt in a fastening hole provided in the other of the connection member and the first terminal, the insertion hole is formed larger than a diameter of a shaft-like portion of the fastening bolt, and an inserting/removing direction of the plug and an axial direction of the fastening bolt are substantially parallel to each other.

Electrical connection structure

A drive device with electronic circuit, including floated wiring for electrically connecting the solid wirings of a circuit to each other and an electronic circuit mechanically connected to an engine, wherein the electronic circuit is formed so that the flat surface thereof including the floated wiring is substantially disposed vertically relative to the output axis of the engine, whereby the vibration of the engine in the major X- and Z-directions can be prevented from applying to the floated wiring in Y-axis direction to increase the seismic resistance of the electronic circuit, and the arrangement of the drive device having the electronic circuit mechanically installed thereon can be realized.

Drive device with electronic circuit

A synchronous-motor controller including an inverter for converting direct current to alternating current in order to supply a synchronous motor with a current responsive to a torque instruction value, a temperature sensor for measuring a temperature of the inverter and a control unit. The control unit detects a locking of the synchronous motor although current is supplied to the synchronous motor and calculates, based on the torque instruction value, a heating value of a switching element of the inverter at the time when the switching element is supplied with the current after the synchronous motor is in a locked condition, wherein a temperature of the switching element is estimated by adding the calculated heating value to an initial value of the temperature of the inverter measured by the temperature sensor when the locking of the synchronous motor is detected.

Synchronous-motor controller

A device for detecting a motor drive current is arranged without substantially requiring additional space. The device for detecting a motor drive current, detects the currents of the phases flowing through the feeder lines that connect the motors to an inverter using a first bus bar for each of the phases arranged in parallel relative to each other and second bus bars extending from the ends of the first bus bars in a direction to intersect the axes of the first bus bar to which attached, by using magnetic field detector elements of each of the phases arranged near the feeder lines, wherein processing means for detecting the currents relying on the magnetic field detector elements of each of the phases are provided on a common circuit board. The magnetic field detector elements are disposed near the first bus bars of each of the phases, and the circuit board is arranged in a space sandwiched between the outermost first bus bars. Thus, the circuit board is arranged without substantially requiring additional space, and the current detecting device is realized in a compact form.

Device for detecting a motor drive current

A drive unit includes an electric motor as a power source, and a simplified coolant circuit for cooling the electric motor. The drive unit further includes, in the drive unit case, a circulation passage L for coolant for cooling the motor M. A circulation passage F for a second coolant is provided separate from the circulation passage L for coolant. A heat exchange portion C within the circulation passage L for the first coolant is provided in the drive unit case for heat exchange with the second coolant in the circulation passage F, and the first coolant for cooling the electric motor is cooled by heat transfer to the second coolant in that heat exchange portion C. Accordingly, the coolant circuit in the drive unit case is simplified.

Drive unit with two coolant circuits for electric motor

A drive unit which uses an electric motor as a power source and has an integrated inverter, with a cooling circuit for the electric motor and the inverter. The drive unit includes a drive unit case, the electric motor housed within the case, and the inverter fixed to the case. A coolant flow passage is provided between the drive unit case and the inverter. The inverter is fixed to the drive unit case through a panel wall, and a partition divides the coolant flow passage into chambers which are coextensive in parallel. As a result, the coolant which flows through the coolant flow passage acts as a two-stage heat shield, barring the heat generated by the electric motor from being transmitted to the inverter.

Drive unit with coolant flow through a space separating an inverter from a casing housing an electric motor

In a drive unit for a hybrid vehicle, a generator-motor is arranged on a first axis and a drive motor is arranged on a second axis in parallel with the first axis. A drive unit casing houses the generator-motor, the drive motor, an inverter unit for the generator-motor and the drive motor and a smoothing condenser for smoothing power source voltage of the inverter unit. The inverter unit is attached to the drive unit casing and is diametrically disposed relative to the generator-motor and the drive motor. The smoothing condenser is attached to the inside of the drive unit casing from which an end portion thereof projects. The inverter unit can be attached to the drive unit casing as a subassembly. By the invention, the drive unit can be made more compact, and the wiring can be simplified.

Drive unit for hybrid vehicles

A motor drive device including a substrate, a control unit packaged over the substrate for generating a pulse width modulation signal; insulation means packaged over the substrate, a gate drive circuit packaged over the substrate and connected through the insulation means with the control unit for generating a transistor drive signal in response to the pulse width modulation signal coming from the control unit, and an inverter including a plurality of transistors for generating a phase current by turning ON/OFF the transistors in response to the transistor drive signal coming from the gate driver circuit. A wiring pattern and a substrate ground are formed at the side of the substrate closer to the control unit. Only the wiring pattern is formed at the side of the substrate closer to the gate drive circuit.

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Nishio, Japan

Hiromichi Agata