Patent application number | Description | Published |
20100327677 | DRIVE APPARATUS AND SEMICONDUCTOR MODULE - A special terminal may project from an encapsulation body of a semiconductor module and may be engaged with an engaging portion of a motor case to limit a positional deviation of the semiconductor module relative to the motor case. Additionally or alternatively, a module side engaging portion may be formed in the encapsulation body and may be engaged with a case side engaging portion to position the semiconductor module relative to the motor case. | 12-30-2010 |
20100327678 | DRIVE APPARATUS - A drive apparatus has a motor device having a tubular motor case. A stator is arranged radially inside the motor case. A rotor is arranged radially inside the stator. A shaft is rotatable with the rotor. An electronic circuit is arranged in the central axis direction of the shaft relative to the motor case. A choke coil has a hole in a central part thereof, in which the shaft is inserted. | 12-30-2010 |
20110018374 | ELECTRONIC CIRCUIT-INTEGRATED MOTOR APPARATUS - An electronic circuit including semiconductor modules and capacitors is positioned in the axial direction of a motor. Each semiconductor module is longitudinally positioned in contact with a heat sink. More specifically, a line perpendicular to the surface of a semiconductor chip included in the semiconductor module is perpendicular to the axis line of the motor. Consequently, each capacitor is positioned so that at least a part of the positional range of the capacitor in the axial direction of the motor coincides with the positional ranges of the semiconductor module and the heat sink in the axial direction. | 01-27-2011 |
20110254387 | DRIVE UNIT OF ELECTRIC MOTOR AND MOTORIZED EQUIPMENT USING THE DRIVE UNIT - A power module of a drive unit of an electric motor is formed by inserting multiple power transistors, which supply a drive current to a coil wound around a stator or a rotor, and wirings connecting the power transistors in a resin, which is formed in the shape of a plate, by resin molding. Electronic components such as aluminum electrolytic capacitors, a choke coil and a first connector are provided in a board thickness direction of the power module and are electrically connected with the wirings of the power module. Thus, a construction for electrically connecting the wirings of the power module formed by the resin molding and the electronic components can be simplified. | 10-20-2011 |
20110254388 | MOTORIZED EQUIPMENT - A power module, a control board and a heat sink are provided on one axial side of a shaft of an electric motor, which consists of a motor case, a stator, a rotor, the shaft and the like. The power module is electrically connected with extraction lines, which extend from a coil wound around the stator, and supplies a drive current to the coil. The control board for controlling switching of the power module is provided on a motor case side of the power module. The heat sink is provided on a side of the control board opposite to the motor case. Thus, when setting of an output of the electric motor is changed, a body size of the heat sink can be changed without changing a positional relationship between the control board and the electric motor and a positional relationship between the power module and the electric motor. | 10-20-2011 |
20110254393 | ELECTRIC MOTOR DEVICE - A power module for supplying driving current to coils wound on a stator of an electric motor and a heat sink for absorbing heat generated at the power module are provided at an axial outside of a motor casing. An intermediate member is provided between the motor casing and the heat sink. The intermediate member has a bottom plate portion fixed to an axial end plate of the motor casing and a cylindrical side wall axially extending from the bottom plate portion. An outer peripheral surface of the heat sink is in contact with an inner peripheral surface of the cylindrical side wall, so that the power module fixed to the heat sink is arranged in a space, which is within a range smaller than an outer diameter of the motor casing. | 10-20-2011 |
20110285223 | Electric drive apparatus - Two power modules, in which switching elements for switching over currents supplied to coils of a motor are resin-molded, are provided to face each other sandwiching a plane including a rotation axis of a shaft. A first smoothing capacitor, second smoothing capacitors and a choke coil are located between the power modules. By consolidating large-sized electronic parts between the power modules, a control unit can be reduced in size and impedance of electric conductor connecting the electronic parts and the power modules can be reduced. | 11-24-2011 |
20110285225 | DRIVE APPARATUS - A heat sink is provided on a motor. A power module is provided on the heat sink to switch current supply to motor coils. A control circuit substrate is arranged on the heat sink and connected electrically to the power module. A power circuit substrate is connected electrically to the power module and arranged at an opposite side of the control circuit substrate relative to the heat sink. A control circuit connector is electrically connected to the control circuit substrate. A power circuit connector is electrically connected to the power circuit substrate. The control circuit connector and the power circuit connector are arranged between the control circuit substrate and the power circuit substrate. | 11-24-2011 |
20110286185 | Inverter device and drive unit using the same - In two systems of three-phase alternating-current inverter devices that drive a motor, power elements on power supply sides of bridge circuits are mounted on unit bases to constitute upper arm units. Power elements on ground sides of the bridge circuits are mounted on unit bases to constitute lower arm units. The upper arm units and the lower arm units are arranged separately on upper surfaces and outside surfaces of heat dissipation blocks of a heat sink. Heats generated by the power elements do not interfere with each other and are emitted to the heat sink, whereby heat dissipation performance of the power elements constituting the bridge circuits is improved. | 11-24-2011 |
20120098361 | DRIVE APPARATUS - A heat sink has two heat radiation blocks. The heat radiation block is formed in a wide column shape. The heat radiation block has connection parts at both ends. The connection parts have respective holes formed to pass through in the axial direction of a motor. One screw is inserted in one connection part and threaded into a motor case. The other screw is inserted in the other connection part and threaded into the motor case together with a cover. A power module forming an inverter circuit of each of two power supply systems is arranged on each heat radiation blocks. | 04-26-2012 |
20120098365 | DRIVE APPARATUS - A heat sink of a drive apparatus includes a heat receiving surface located in a rising direction from an end surface wall of a motor case formed in an axial direction of the motor case. A power module includes a mold part and is arranged along the heat receiving surface of the heat sink. Motor leads are taken out from the motor case and electrically connected to the power module and winding wires. The drive apparatus has the motor case, a control circuit substrate, the heat sink, the power module and a power circuit substrate arranged in this order in the axial direction. The motor leads are connected to the power module at an opposite side of the motor case relative to the mold part in the axial direction. | 04-26-2012 |
20120098366 | DRIVE APPARATUS - An electronic control unit ( | 04-26-2012 |
20120098391 | DRIVE APPARATUS - An electronic control unit ( | 04-26-2012 |
20120104886 | DRIVE APPARATUS - A heat sink of a drive apparatus includes a heat receiving surface located in a rising direction from an end surface wall of a motor case formed in an axial direction of the motor case. A power module is arranged along the heat receiving surface of the heat sink. A control circuit substrate includes a control circuit for controlling driving of a motor and is electrically connected to the power module. A power circuit substrate is supplied with currents supplied to winding wires, and is electrically connected to the power module. In the drive apparatus, the motor case, the control circuit substrate, the power module and the power wiring part are arranged in this order in an axial direction. The power module is arranged longitudinally relative to the end surface wall in the axial direction of the motor case. | 05-03-2012 |
20120160596 | ELECTRIC MOTOR ASSEMBLY AND ELECTRIC POWER STEERING DEVICE - An electric power steering device includes an electric motor assembly. The assembly includes a case, a motor, and a control unit. The control unit controls the motor based on at least a torque signal indicative of a steering torque applied to a steering wheel by an operator. A power connector is disposed to protrude toward radial outside from the case. A signal connector is disposed to protrude toward radial outside from the case. A torque signal connector is disposed on a case portion close to the control unit to protrude toward radial outside from the case. The torque signal connector and the power connector are disposed apart from each other by a predetermined distance, and the torque signal connector has a connecting portion, which is prepared to be connected with the torque signal line, formed toward the motor along the axial direction of the case. | 06-28-2012 |
20120161558 | DRIVE DEVICE - A drive device includes a motor, a control unit and a holder. The motor has a motor case, a stator, a winding wire, a rotor and a shaft. The control unit includes a semiconductor module, a receiving member, and a cover. The control unit is arranged on a side of the motor in an axis direction of the motor. The holder is arranged between the motor and the control unit, and has a wall portion extending toward the control unit and fitting with the control unit. | 06-28-2012 |
20120161590 | DRIVE DEVICE - A drive device includes a motor, a control unit, a first fastener, and a second fastener. The control unit is arranged on a side of the motor in an axis direction of the motor. The first fastener is arranged in a wall part of a cylindrical motor case of the motor opposing to the control unit, on an inner side of a peripheral wall of the motor case in a radial direction. The second fastener is tightened with the first fastener so as to connect the motor and the control unit with each other. | 06-28-2012 |
20120161689 | CONTROLLER - Each of a first and a second inverter circuit supplies a driving current to an electric motor in a different power supply line. A custom IC has a first pre-driver circuit for outputting control signals to the first inverter circuit and a second pre-driver circuit for outputting control signals to the second inverter circuit. A micro-computer for outputting operation signals to the first and second pre-driver circuits is mounted to a control board on a center line. A distance between the center line and the first inverter circuit and a distance between the center line and the second inverter circuit is equal to each other. First and second output terminals of the micro-computer as well as first and second input and output terminals of the custom IC are symmetric with respect to the center line. | 06-28-2012 |
20120307476 | CONTROL UNIT AND DRIVING APPARATUS USING THE SAME - Power terminals of power modules are magnetically coupled to power-output terminals and power-input terminals. A heat sink has parallel surfaces, which are in parallel to the power modules and the power terminals. A magnetic field, which is generated by electric current flowing through switching devices and the power terminals, is cancelled by a magnetic field, which is generated by eddy current flowing in the heat sink. | 12-06-2012 |
20130257194 | MOTORIZED EQUIPMENT - A power module, a control board and a heat sink are provided on one axial side of a shaft of an electric motor, which consists of a motor case, a stator, a rotor, the shaft and the like. The power module is electrically connected with extraction lines, which extend from a coil wound around the stator, and supplies a drive current to the coil. The control board for controlling switching of the power module is provided on a motor case side of the power module. The heat sink is provided on a side of the control board opposite to the motor case. Thus, when setting of an output of the electric motor is changed, a body size of the heat sink can be changed without changing a positional relationship between the control board and the electric motor and a positional relationship between the power module and the electric motor. | 10-03-2013 |
20140035445 | ROTATING ELECTRIC MACHINE AND ELECTRIC POWER STEERING APPARATUS - A rotating electric machine for driving a drive object includes a heat sink having a cavity on a first face, a power module disposed on the heat sink for switching a power supply for the winding, a power wiring part disposed on the first face of the heat sink and electrically connected to the power module for flowing a drive electric current to the winding, a control wiring part disposed on a second face of the heat sink and electrically connected to the power module for flowing a control electric current that controls the power module, and at least one electrolytic capacitor disposed in the power wiring part and housed in the cavity, thereby preventing an abnormality of the electrolytic capacitor from causing an abnormality of the control wiring part. | 02-06-2014 |
20140145564 | ROTARY ELECTRIC MACHINE - A housing and a rotary shaft of a motor are formed of non-magnetic material. A soft magnetic member is provided between a first axial end surface of a fixed core and a bearing. The soft magnetic member is provided on the fixed core side relative to the first bearing thereby to suppress magnetic flux leaking to a vicinity of one end part of the rotary shaft by leading the magnetic flux, which is generated from a rotor, to the rotor core through the fixed core and a casing. A magnetic angular position sensor fixed to one end part of the rotary shaft can detect a magnetic angular position of the rotor accurately without being affected by external magnetic field. As a result, noise generated by vibration of the motor can be suppressed. | 05-29-2014 |
20140153198 | DRIVE APPARATUS - A drive apparatus includes a power module, a connector and a heat sink. The connector is used for electric connection to an external side and has a flange, which is formed on its peripheral wall. The heat sink is formed to have a module holding part for holding the power module and a fitting hole for fitting with the flange and has a connector holding part for holding a connector. The flange is formed along a first surface, which faces the connector holding part of the peripheral wall, and side surfaces, which are formed on both sides of the first surface. Thus, water droplets are prevented from entering into a control unit through a clearance between the connector and the heat sink without adding other members such as a water preventing cover. | 06-05-2014 |