WO2017154236A1 - 電動駆動装置及び電動パワーステアリング装置 - Google Patents
電動駆動装置及び電動パワーステアリング装置 Download PDFInfo
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- WO2017154236A1 WO2017154236A1 PCT/JP2016/073697 JP2016073697W WO2017154236A1 WO 2017154236 A1 WO2017154236 A1 WO 2017154236A1 JP 2016073697 W JP2016073697 W JP 2016073697W WO 2017154236 A1 WO2017154236 A1 WO 2017154236A1
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- WIPO (PCT)
- Prior art keywords
- position detection
- circuit unit
- motor
- permanent magnet
- motor cover
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
- B62D5/0406—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box including housing for electronic control unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
- G01L5/221—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to steering wheels, e.g. for power assisted steering
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
- H02K11/014—Shields associated with stationary parts, e.g. stator cores
- H02K11/0141—Shields associated with casings, enclosures or brackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/505—Fastening of winding heads, equalising connectors, or connections thereto for large machine windings, e.g. bar windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0421—Electric motor acting on or near steering gear
- B62D5/0424—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Definitions
- the present invention relates to an electric drive device and an electric power steering device, and more particularly to an electric drive device and an electric power steering device incorporating an electronic control device.
- a mechanical control element is driven by an electric motor.
- an electronic control device including a semiconductor element or the like for controlling the rotational speed or rotational torque of the electric motor is electrically driven.
- a so-called electromechanical integrated electric drive device that is integrated into a motor is beginning to be adopted.
- an electromechanical integrated electric drive device for example, in an electric power steering device of an automobile, a rotation direction and a rotation torque of a steering shaft that is rotated by a driver operating a steering wheel are detected.
- the electric motor is driven to rotate in the same direction as the rotation direction of the steering shaft based on the detected value, and the steering assist torque is generated.
- an electronic control unit (ECU: Electronic Control Unit) is provided in the power steering device.
- Patent Document 1 describes an electric power steering device that includes an electric motor and an electronic control device.
- the electric motor is housed in a motor housing having a cylindrical portion made of aluminum alloy or the like, and the electronic control unit is housed in an ECU housing disposed on the opposite side of the motor housing in the axial direction.
- the electronic control unit housed in the ECU housing includes a power supply circuit unit, a power conversion circuit unit having a power switching element such as a MOSFET or IGBT for driving and controlling the electric motor, and a control for controlling the power switching element. And an output terminal of the power switching element and an input terminal of the electric motor are electrically connected via a bus bar.
- the electronic control unit housed in the ECU housing is supplied with electric power from a power source via a connector terminal assembly made of synthetic resin, and is supplied with detection signals such as an operating state from detection sensors. .
- the connector terminal assembly functions as a lid, is connected to the electronic control unit so as to close an opening formed in the ECU housing, and is fixed to the outer surface of the ECU housing by fixing bolts.
- an electric drive device integrated with an electronic control device an electric brake, an electric hydraulic controller for various hydraulic controls, and the like are known.
- an electric power steering device is representative. explain.
- the electric motor used in such an electric power steering apparatus is a three-phase DC electric motor, and information on the magnetic pole position of the rotor is required to drive the electric motor.
- a position detection sensor comprising a combination of a permanent magnet fixed to the rotating shaft of the electric motor and a Hall IC is used.
- the mounting structure of the position detection sensor of such an electric power steering apparatus is generally configured as shown in FIG.
- reference numeral 90 is a motor housing constituting an electric motor, and a rotating shaft 91 is provided therein.
- a rotor (not shown) in which a permanent magnet is embedded is fixed to the rotating shaft 91, and the rotor is rotated by a magnetic field generated by a stator (not shown) around which a winding is wound. is there.
- a magnet holding member 92 is fixed on the side opposite to the output side of the rotating shaft 91, and a position detecting permanent magnet 93 is accommodated in the magnet holding member 92.
- An electronic control unit housed in an ECU housing includes a power conversion circuit unit (not shown) and a power conversion circuit unit (not shown) having a power switching element such as a MOSFET or IGBT for driving and controlling an electric motor. And a control circuit unit 94 for controlling the power switching element.
- the control circuit unit 94 is fixed to the fixing protrusion 95 with a bolt 96.
- a GMR (giant magnetoresistive effect) element 97 and a position detection circuit are provided on the surface of the rotary shaft 91 of the control circuit section 94 on the position detection permanent magnet 93 side. Not shown).
- the position detecting permanent magnet 93 is rotated by the rotation of the rotating shaft 91, and the rotation position of the position detecting permanent magnet 93 is detected by the GMR element 97 to obtain the magnetic pole position information of the rotor.
- the mounting structure of the position detection sensor having such a configuration and the detection method of magnetic pole position information are well known.
- the position detecting permanent magnet 93 forming the position detecting sensor is provided on the motor housing 90 side, and the GMR element 97 and its position detecting circuit are provided in the ECU housing.
- the position detection sensor components are separately attached to the motor housing and the ECU housing as described above, there is a problem in that the positional assembly accuracy of the position detection sensor is lowered and an accurate detection signal cannot be obtained. Further, since the GMR element and the position detection circuit are provided in the control circuit unit, the distance between the power conversion circuit unit is reduced, and the GMR element and the position detection circuit are affected by the switching noise of the power conversion circuit unit. There is a problem that a detection signal cannot be obtained.
- the GMR element is an example of a position detecting element. In the present invention described below, the GMR element is not limited to this GMR element, and many magnetoresistive elements can be used.
- An object of the present invention is to provide a novel electric drive device and electric power steering device that improve the assembly accuracy of the position detection sensor and that the magnetoresistive effect element and the position detection circuit are less susceptible to the switching noise of the power conversion circuit unit. It is to provide.
- elements other than GMR elements are referred to as magnetoresistive elements.
- a feature of the present invention is that a position detection permanent magnet constituting a position detection sensor is provided on the side opposite to the output side of the rotary shaft of the rotor housed in the motor housing, and the position detection permanent magnet is further provided.
- the motor cover is provided with a magnetoresistive element that constitutes a position detection sensor and a position detection circuit thereof, and the magnetoresistive element is disposed at a position facing the position detecting permanent magnet.
- the magnetoresistive element and the position detection circuit constituting the position detection sensor are arranged on the motor cover on the side where the position detection permanent magnet is provided, the mutual positional assembly accuracy can be improved.
- the power conversion circuit unit, the magnetoresistive effect element, and the position detection circuit are moved away from each other as compared with the control circuit, there is an effect that an accurate detection signal can be obtained with less adverse effects of switching noise. Can do.
- FIG. 4 is a perspective view of a power supply circuit unit shown in FIG. 3.
- FIG. 4 is a perspective view of a power conversion circuit unit shown in FIG. 3.
- FIG. 4 is a perspective view of a control circuit unit shown in FIG. 3. It is the perspective view which looked at the cover body provided with the connector terminal shown in FIG. 3 from diagonally lower side.
- It is a longitudinal cross-sectional view of the electric power steering apparatus shown in FIG. It is a principal part expanded sectional view which shows the attachment structure of the position detection sensor of FIG. It is an expanded sectional view which shows the attachment structure of the conventional position detection sensor.
- the steering device 1 is configured as shown in FIG.
- a pinion (not shown) is provided at the lower end of the steering shaft 2 connected to a steering wheel (not shown), and this pinion meshes with a rack (not shown) that is long in the left-right direction of the vehicle body.
- Tie rods 3 for steering the front wheels in the left-right direction are connected to both ends of the rack, and the rack is covered with a rack housing 4.
- a rubber boot 5 is provided between the rack housing 4 and the tie rod 3.
- An electric power steering device 6 is provided to assist the torque when the steering wheel is turned.
- a torque sensor 7 that detects the turning direction and turning torque of the steering shaft 2 is provided, and an electric motor unit 8 that applies a steering assist force to the rack via the gear 10 based on the detection value of the torque sensor 7.
- an electronic control unit (ECU) unit 9 that controls the electric motor disposed in the electric motor unit 8 is provided.
- the electric motor steering unit 8 of the electric power steering device 6 is connected to the gear 10 through bolts (not shown) at the outer peripheral portion on the output shaft side, and the electronic control device unit on the opposite side of the output shaft of the electric motor 8 unit. 9 is provided.
- the electric motor unit 8 is composed of a motor housing 11A having a cylindrical portion made of aluminum alloy or the like and an electric motor (not shown) housed in the motor housing 11A.
- the ECU housing 11B is made of an aluminum alloy or the like and is disposed on the opposite side of the output shaft 11A in the axial direction, and an electronic control assembly (not shown) housed in the ECU housing 11B.
- the motor housing 11A and the ECU housing 11B are integrally fixed by fixing bolts at opposite end surfaces thereof.
- the electronic control assembly housed in the ECU housing 11B includes a power supply circuit unit that generates a necessary power supply, a power conversion circuit unit that includes a power switching element that includes a MOSFET that drives and controls the electric motor of the electric motor unit 8, The control circuit unit controls the power switching element, and the output terminal of the power switching element and the input terminal of the electric motor are electrically connected via a bus bar.
- the power supply circuit unit, the power conversion circuit unit, and the control circuit unit are provided separately on three different substrates.
- a lid 12 made of synthetic resin that also serves as a connector terminal assembly is fixed to an end face of the ECU housing 11B by a fixing bolt 13 (see FIG. 3).
- the lid 12 is provided with a connector terminal forming part 12A for supplying power, a connector terminal forming part 12B for detection sensor, and a connector terminal forming part 12C for sending a control state for sending a control state to an external device.
- the electronic control assembly housed in the ECU housing 11B is supplied with electric power from the power source via the connector terminal forming portion 12A for supplying power to the lid 12 made of synthetic resin, and is operated from the detection sensors.
- a detection signal such as a state is supplied via the connector terminal forming part 12B for the detection sensor, and a control state signal of the current electric power steering apparatus is sent via the connector terminal forming part 12C for sending the control state.
- the lid 12 is shaped so as to cover the entire opening of the ECU housing 11B, but each connector terminal is formed in a small size and inserted through an insertion hole formed in the ECU housing 11B. It may be configured to be connected to the control assembly.
- the control circuit unit calculates the drive operation amount of the electric motor based on the detected value.
- the electric motor is driven by the power switching element of the power conversion circuit unit based on the calculated drive operation amount, and the rotating shaft of the electric motor is rotated so as to drive the steering shaft 2 in the same direction as the operation direction.
- the rotation of the rotating shaft is transmitted from a pinion (not shown) to a rack (not shown) via the gear 10 and the automobile is steered. Since these configurations and operations are already well known, further explanation is omitted.
- FIG. 3 shows an exploded perspective view of the electric power steering apparatus 6.
- the motor housing 11A usually contains an electric motor.
- the motor housing 11A and the ECU housing 11B are made of separate aluminum alloys, but both housings may be the same housing.
- the electronic control unit 9 includes an ECU housing 11B coupled to the opposite side of the end of the rotating shaft to which the pinion gear (not shown) of the electric motor in the motor housing 11A is fixed, and three fixing bolts 13 on the ECU housing 11B.
- the lid body 12 coupled by the.
- the lid 12 also serves as a connector terminal assembly, and is formed from synthetic resin by injection molding.
- various types of connector wiring portions are simultaneously embedded in the lid body 12 by an insert mold.
- a power supply circuit section 14 is provided in the housing space constituted by the ECU housing 11B and the lid body 12, and a power conversion circuit section 15 and a control circuit section 16 are disposed in the housing space of the ECU housing 11B and the motor housing 11A. ing.
- the power supply circuit unit 14, the power conversion circuit unit 15, and the control circuit unit 16 constitute an electronic control assembly.
- the heat dissipating base 30 made of metal such as aluminum or aluminum alloy is disposed inside the ECU housing 11B.
- the heat dissipation base 30 is formed integrally with the ECU housing 11B. Further, metal substrates 17 and 18 on which electric components constituting the power supply circuit unit 14 and the power conversion circuit unit 15 are mounted by single-sided mounting are fixed to both surfaces of the heat radiating base 30.
- the heat dissipation base 30 made of aluminum or aluminum alloy having a predetermined thickness is disposed between the metal substrate 17 and the metal substrate 18, and the heat dissipation base 30 functions as a heat dissipation member as will be described later. Therefore, it is formed integrally with the ECU housing 11B and is configured to be able to radiate heat from the ECU housing 11B to the outside air.
- the metal substrates 17 and 18 and the heat radiating base 30 are made of heat radiating functional materials such as a heat radiating adhesive, a heat radiating sheet, and a heat radiating grease having high thermal conductivity to enhance thermal contact. It is intervened between.
- a power supply circuit having a main function of generating a high-voltage DC power source used for an inverter device for driving an electric motor and a low-voltage DC power source used for a control circuit such as a microcomputer.
- Part 14 is arranged.
- the power supply circuit unit 14 has a capacitor 19, a coil 20, a switching element 21 made of a MOSFET, and a power supply side from a battery on one side of a metal substrate 17 made of a metal having good thermal conductivity such as aluminum.
- the power supply side connector 22 to which the connector terminal is connected, the high voltage side connector 23 to which the high voltage side connector terminal for supplying high voltage power to the power conversion circuit unit 15 is connected, and the low voltage side connector terminal for supplying low voltage power to the control circuit unit 16 are provided. Electrical components such as the low voltage side connector 24 to be connected are mounted.
- the metal substrate 17 is formed by forming an insulating layer on an aluminum substrate, and printing a wiring pattern made of copper foil on the insulating layer, and electric components are placed on the wiring pattern. Components are electrically connected.
- the connectors 22 and 23 are press-fit type connectors and have elasticity toward the inside. By simply inserting connector terminals into the connectors 22 and 23, the mutual connection can be easily performed without using solder. It can be secured. As shown in FIG. 4, the connectors 22 and 23 are formed such that both ends of one elongated metal plate are folded inward, and the folded area is further folded twice so that both end faces face each other.
- the opposing end faces have elasticity, and the connector terminals pushed into the end faces come into strong contact so that the pushing force applied from the connector terminals can be transmitted to the metal substrate 17 via the connectors 22 and 23. is there.
- the metal substrate 17 is not fixed to the heat radiating base 30 by the fixing screws, and the metal substrate 17 and the heat radiating base 30 are fixed by the pushing force applied from the connector terminals inserted into the connectors 22 and 23. It is configured.
- a power conversion circuit section 15 that executes inverter control whose main function is driving the electric motor is arranged.
- the metal substrate 18 of the power conversion circuit unit 15 is disposed so as to face the metal substrate 17 of the power supply circuit unit 14 with the heat dissipation base 30 as a boundary.
- the opposing surfaces of the metal substrate 18 of the power conversion circuit unit 15 and the metal substrate 17 of the power supply circuit unit 14 have substantially the same shape, and heat is easily transmitted to the heat dissipation base 30.
- a heat radiation function material such as a heat radiation adhesive, a heat radiation sheet, and heat radiation grease having good thermal conductivity is interposed between the metal substrates 17 and 18 and the heat radiation base 30.
- the power conversion circuit unit 15 has a power switching element 25 made of a plurality of MOSFETs or IGBTs on a metal substrate 18 made of a metal having a good thermal conductivity such as aluminum, and an output for outputting the same.
- Connectors 26U, 26V, 26W, and input terminals such as gates, drains, and sources for controlling the switching element 25 and connector terminals 27A to 27D for feeding back the operation state of the switching element 25 to the control circuit unit 16 are mounted.
- An inverter-side connector 28 that receives supply of power from the power supply circuit unit 14 is also provided.
- the switching element 25 includes three fail-safe switching elements 25.
- the output connectors 26U, 26V, and 26W are press-fit type connectors and have elasticity toward the inside.
- the output connectors 26U, 26V, and 26W are also formed so that both ends of one elongated metal plate are folded inward, and the folded region is further folded twice so that both end faces face each other. ing.
- the metal substrate 18 is formed by forming an insulating layer on an aluminum substrate, and printing a wiring pattern made of copper foil on the insulating layer, on which electric components are placed, and each electric Components are electrically connected.
- FIG. 5 shows the side on which the above-described electrical component is placed for easy understanding. However, as shown in FIG. 3, the electrical component is actually arranged on the lower side.
- a control circuit unit 16 whose main function is switching control of the switching element 25 of the power conversion circuit unit 15 is disposed.
- a resin board mounting boss 29 is formed on the ECU housing 11B toward the motor housing 11A, and the resin board 31 of the control circuit unit 16 is fixed to the resin board mounting boss 29 with mounting bolts.
- control circuit unit 16 includes a microcomputer 32 and the like for controlling the switching element 25 and the like mounted on a resin substrate 31 made of synthetic resin or the like. As shown in FIG. 3, electronic components such as peripheral circuits of the microcomputer 32 are arranged on the resin substrate 31, but these are omitted in FIG. 6.
- the resin substrate 31 is disposed at a predetermined distance from the power conversion circuit unit 15, and the electrical components of the power conversion circuit unit 15 and the control circuit unit 16 are disposed in a space therebetween.
- the control circuit unit 16 and the power conversion circuit unit 15 are connected by the connector terminals 27A to 27D described above.
- the connector terminals 27A to 27D have a length exceeding a predetermined distance between the resin substrate 31 and the power conversion circuit unit 15.
- the connector terminal 27A is connected to the connection hole 33A of the resin substrate 31, the connector terminal 27B is connected to the connection hole 33B, the connector terminal 27C is connected to the connection hole 33C, and the connector terminal 27D is connected to the connection hole 33D. It is like that.
- the connection hole 33E formed in the resin substrate 31 is connected to a control-side connector terminal for signal transmission and low-voltage power supply embedded in an insulating region portion of the lid 12 described later.
- the power supply circuit unit 14, the heat dissipation base 30, the power conversion circuit unit 15, and the control circuit unit 16 are arranged in this order from the lid 12 toward the motor housing 11A.
- the control circuit unit 16 by disposing the control circuit unit 16 at a distance from the power supply circuit unit 14, it is possible to provide a stable power supply to the control circuit unit 16 after removing power supply noise.
- the lid body 12 in which the connector wiring portion is embedded covers the opening of the ECU housing 11 ⁇ / b> B, and, like the one shown in FIG. 2, a power supply connector on the outer surface in the axial direction. 12 A of terminal formation parts, the connector terminal formation part 12B for detection sensors, and the connector terminal formation part 12C for control state sending which sends a control state to an external apparatus are provided. Note that the connector terminal forming portion 12B and the connector terminal forming portion 12C may be integrally formed. Power is supplied from a power source (not shown) to the power supply circuit unit 14 through these connector terminal forming units 12A to 12C. Similarly, a signal from the detection sensor or the like is input to the control circuit unit 16.
- the lid body 12 is formed of a synthetic resin.
- the lid body 12 also serves as a connector terminal assembly. A wiring section and its connector terminals are provided.
- the power supply side connector terminal 34 at the tip is exposed from the lid 12.
- the power supply side connector terminal 34 is located inside the side peripheral surface of the lid 12.
- the power supply side connector terminal 34 is connected to the power supply side connector 22 of the power supply circuit section 14, and the connection can be completed simply by inserting the power supply side connector terminal 34 into the press-fit type power supply side connector 22. It is.
- the power supply side connector terminal 34 is inserted into the press-fit type power supply side connector 22 and has a function of pressing the metal substrate 17 strongly against the heat radiating base 30.
- a high voltage side connector wiring portion that is a connector wiring portion for supplying power that connects the power supply circuit portion 14 and the power conversion circuit portion 15 is embedded in the lid 12. Both ends of the high-voltage connector wiring portion are formed as a high-voltage connector terminal 35 and an inverter-side connector terminal 36 and are exposed from the lid 12.
- One high-voltage side connector terminal 35 is connected to the high-voltage side connector 23 of the power supply circuit unit 14, and the other inverter-side connector terminal 36 is connected to the inverter-side connector 28 of the power conversion circuit unit 15.
- the high-voltage side connector terminal 35 is connected to the high-voltage side connector 23 of the power supply circuit unit 14, and simply by inserting the high-voltage side connector terminal 35 into the press-fit type high-voltage side connector 23, it is easy to use without using solder. The connection is complete.
- the high-voltage connector terminal 35 is inserted into the press-fit high-voltage connector 23 and has a function of pressing the metal substrate 17 strongly against the heat dissipation base 30.
- the inverter-side connector terminal is connected to the inverter-side connector 28 of the power conversion circuit unit 15, and the connection is completed by TIG welding the inverter-side connector terminal 36 and the inverter-side connector 28.
- This high voltage side connector wiring portion has a U shape between the high voltage side connector terminal 35 and the inverter side connector terminal 36, and the cross section of the inverter side connector terminal is longer.
- the long portion is embedded in a synthetic resin forming the lid 12 to form a high-voltage side insulating region 40, and the high-voltage side insulating region 40 is inserted through the metal substrates 17 and 18 and the heat dissipation base 30. Is extended to the power conversion circuit unit 15.
- a low-voltage side connector wiring portion that is a connector wiring portion for supplying power that connects the power supply circuit portion 14 and the control circuit portion 16 is embedded in the lid 12. Both ends of the low-voltage connector wiring portion are formed as a low-voltage connector terminal 37 and a control-side connector terminal 38 and are exposed from the lid 12.
- One low voltage side connector terminal 37 is connected to the low voltage side connector 24 of the power supply circuit unit 14, and the other control side connector terminal 38 is connected to the connection hole 33 ⁇ / b> E of the control circuit unit 16.
- the signal transmission connector wiring portion for signal transmission connected to the connector terminal forming portion 12B for detection sensor and the connector terminal forming portion 12C for sending control state is adjacent to the low-voltage side connector wiring portion.
- the control side connector terminal 39 is exposed from the lid body 12.
- the low-voltage side connector terminal 37 is connected to the low-voltage side connector 24 of the power supply circuit unit 14, and the connection is completed simply by fitting the low-voltage side connector terminal to the socket-type low-voltage side connector 24.
- the control side connector terminal 38 and the control side connector terminal 39 for signal transmission are connected to the connection hole 33E of the control circuit section 16, and the control side connector terminals 38 and 39 and the connection hole 33E are joined by soldering. This completes the connection.
- the low-voltage side connector wiring portion and the signal transmission connector wiring portion described above are embedded in the synthetic resin forming the lid body 12 to form the low-voltage side insulating region portion 41, and the low-voltage side insulating region portion 41 is the metal substrate 17. , 18 extends through the insertion portion formed on the outer peripheral side end surface to the control circuit portion 16.
- the power supply side connector terminal 34, the high voltage side connector terminal 35, and the inverter side connector terminal 36 are brought close to the outer peripheral side of each substrate of the power supply circuit unit 14, the power conversion circuit unit 15 and the control circuit unit 16.
- the low voltage side connector terminal 37, the control side connector terminal 38, and the control side connector terminal 39 are disposed.
- the electric components constituting the power supply circuit unit 14, the power conversion circuit unit 15 and the control circuit unit 16 can be arranged close to the center of each substrate, so that the size can be reduced in the radial direction.
- the order of assembling the electric power steering apparatus shown in FIG. 3 is as follows. First, the metal substrates 17 and 18 of the power supply circuit unit 14 are opposed to the heat radiating base 30, and the lid 12 is fixed to the ECU housing 11B in this state. At this time, the power supply side connector terminal 34 is inserted into the power supply side connector 22, and the high voltage side connector terminal 35 is inserted into the high voltage side connector 23, whereby the metal substrate 17 is pressed against the heat radiating base 30 and fixed. In some cases, the low-voltage connector terminal 37 can be inserted into the low-voltage connector 24 to press the metal substrate 17 against the heat radiating base 30.
- the metal substrate 18 of the power conversion circuit unit 15 is fixed to the heat dissipation base 30 with fixing screws, and the power supply circuit unit 14, the power conversion circuit unit 15, and the heat dissipation base 30 are integrated.
- the high voltage side insulating region 40 protrudes from the power conversion circuit unit 15, the inverter side connector terminal 36 and the inverter side connector 28 exposed from this are joined using a TIG welding torch.
- connection holes 33A to 33E formed in the resin substrate 31 of the control circuit unit 16 and the corresponding connector terminals 27A to 27D, 34, and 35 are soldered and joined. In this way, the electronic control unit 9 is completed.
- the motor housing 11A and the ECU housing 11B are integrated by fixing the electronic control unit 9 to the motor housing 11A with fixing bolts using a mounting flange formed on the ECU housing 11B. .
- the conventional position detection sensor mounting structure is provided with the position detection permanent magnet 93 that forms the position detection sensor on the motor housing 90 side.
- the position detection circuit is provided in the ECU housing. As described above, if the position detection sensor components are attached separately to the motor housing and the ECU housing, there is a problem that the positional assembly accuracy of the position detection sensor is lowered and an accurate detection signal cannot be obtained. Further, since the GMR element 97 and the position detection circuit are provided in the control circuit unit, the distance between the power conversion circuit unit is reduced, and the GMR element and the position detection circuit are affected by the switching noise of the power conversion circuit unit. There is a problem that a simple detection signal cannot be obtained.
- a position detection permanent magnet that constitutes a position detection sensor is provided on the side opposite to the output side of the rotation shaft of the rotor housed in the motor housing, and further a position detection permanent magnet is provided.
- a magnetoresistive element such as a GMR element that constitutes a position detection sensor and a position detection circuit therefor are provided on the motor cover on the other side, and the magnetoresistive element is disposed at a position facing the permanent magnet for position detection.
- the magnetoresistive element and the position detection circuit that constitute the position detection sensor are arranged on the motor cover on the side where the position detection permanent magnet is provided, the positional assembly accuracy of each other is improved.
- the power conversion circuit unit, the magnetoresistive effect element, and the position detection circuit are separated from the control circuit unit, it is possible to obtain an accurate detection signal with less adverse effects of switching noise. Can play.
- FIG. 9 shows an enlarged cross section of a portion where the position detection sensor is attached.
- the motor housing 11 ⁇ / b> A, the ECU housing 11 ⁇ / b> B, and the lid body 12 are fixed and integrated by fixing means such as bolts.
- a lid 12 is fixed in the ECU housing 11B.
- a power circuit section 14 is disposed in a space between the ECU housing 11B and the lid 12, and the motor cover 48 fixed to the motor housing 11A and the ECU housing 11B are arranged.
- a power conversion circuit unit 15 and a control circuit unit 16 are arranged in the space between them.
- FIG. 8 the detailed configuration of the power supply circuit unit 14, the power conversion circuit unit 15, and the control circuit unit 16 (only the resin substrate is shown) is omitted, but actually, as shown in FIG. It has become a structure.
- the resin substrate 31 constituting the control circuit unit 16 is fixed to the resin substrate mounting boss 29 formed on the ECU housing 11B by bolts 42.
- a microcomputer 32 and its peripheral circuits are mounted on the resin substrate 31.
- the resin substrate 31 is different from that shown in FIG. 10 and is not mounted with a position detection circuit or a GMR element. Therefore, since other electronic components can be mounted by this amount, the mounting efficiency of the resin substrate 31 can be increased.
- an annular stator 43 around which a winding is wound is fixed inside the motor housing 11A.
- a rotor 44 in which a permanent magnet is embedded is rotatably arranged inside the stator 43, and the rotor 44 is given a rotational force by a magnetic field generated by the winding of the stator 43.
- a rotary shaft 45 is press-fitted and fixed at the center of the rotor 44, and the rotary shaft 45 is integrally rotated by the rotation of the rotor 44.
- the output end of the rotating shaft 45 is rotatably supported by a ball bearing 46 fixed to the side wall 11S of the motor housing 11A.
- a pinion gear 47 is fixed to the output end of the rotary shaft 45, and the pinion gear 47 assists the movement of the rack.
- a motor cover 48 is press-fitted on the opposite side of the side wall 11S of the motor housing 11A, and the motor cover 48 is preferably fixed to the motor housing 11A with bolts. Therefore, the stator 43 and the rotor 44 are arranged in the space between the side wall 11S of the motor housing 11A and the motor cover 48.
- the motor cover 48 can be formed integrally with the motor housing 11A in the same manner as the side wall 11S of the motor housing 11A.
- the side wall 11S of the motor housing 11A is formed as a separate body and is attached by bolts or the like. It will be fixed to the motor housing 11A. Therefore, the motor cover 48 is located on the side opposite to the output end of the rotating shaft 45 and means a space that forms a space in which the stator 43 and the rotor 44 are arranged.
- a ball bearing 49 is fixed at the center of the motor cover 48, and the end opposite to the output end where the pinion gear 47 of the rotating shaft 45 is fixed is supported. Therefore, the rotating shaft 45 is rotatably supported by the ball bearing 46 and the ball bearing 49 and is rotated by the rotation of the rotor 44.
- a magnet holding member 50 is fixed to an end of the rotating shaft 45 opposite to the output end to which the pinion gear 47 is fixed, and a position constituting a position detection sensor in the magnet holding member 50.
- a permanent magnet for detection 51 is accommodated.
- the position detecting permanent magnet 51 is magnetized so that a plurality of unit magnets are formed in an annular shape.
- the bus bar 52 is fixed to the surface of the motor cover 48 on the ECU housing 11B side, and the power conversion circuit unit 15 and the winding of the stator 43 are connected.
- the bus bar 52 is surrounded by a synthetic resin to ensure electrical insulation.
- the bus bar 52 is fixed to the motor cover 48 by bolts 53.
- a hole 52h is formed in the center of the bus bar 52, and the magnet holding member 50 is accommodated in the hole 52h.
- the motor cover 48 is formed with a storage recess 54, in which the ball bearing 49 is stored and a part of the magnet holding member 50 is stored. Therefore, the axial length of the rotating shaft 45 can be shortened as compared with the conventional structure shown in FIG. This is because a position detection board 55 to be described later is disposed on the motor cover 48 side, and this configuration can be adopted.
- a GMR (giant magnetoresistive effect) element 56 which is one of magnetoresistive effect elements constituting a position detection sensor, and a detection signal of the GMR element 56 are displayed.
- a position detection board 55 on which a position detection circuit (not shown) for calculating the magnetic pole position is mounted is provided.
- the GMR element 56 has a function of detecting magnetic pole position information of the rotor 44 in cooperation with the position detecting permanent magnet 51.
- the position detection circuit may be a microcomputer or a peripheral circuit having an arithmetic function, but may be only an amplification circuit that amplifies the magnetic pole information signal of the GMR element 56. In this case, the amplified signal is transmitted to the control circuit unit 16, and the control circuit unit 16 calculates the magnetic pole position.
- the position detection substrate 55 is made of a resin substrate, and is fixed to a detection substrate mounting boss 57 formed on the motor cover 48 with bolts 58.
- the position detection board 55 is disposed so as to cover the position detection permanent magnet 51 from above in the illustrated state. In this way, it is possible to shield the space where the electric motor is arranged in cooperation with the motor cover 48 in a liquid-tight or air-tight manner with respect to the space where the electronic control device is arranged. Become.
- the detection board mounting boss 57 is formed in an annular shape, and the position detection board 55 is formed in a circular shape for detection. It is also possible to attach to the board mounting boss 57. Also in this case, it is possible to shield the space where the electric motor is arranged in cooperation with the motor cover 48 from the space where the electronic control device is arranged in a liquid-tight or air-tight manner. . As described above, the position detection board 55 is directly fixed to the motor cover 48 or indirectly fixed to the motor cover 48 via the bus bar 52.
- the GMR element 56 is mounted on the surface of the position detection board 55 on the position detection permanent magnet 51 side, and is disposed at a position facing the position detection permanent magnet 51. Therefore, the position detection sensor is integrally assembled in the motor housing 11A. That is, the rotating shaft 45 to which the position detection permanent magnet 51 is fixed is supported by the motor cover 48, and the position detection board 55 on which the GMR element 56 is mounted is the motor cover 48 or the bus bar 52 (also this It is fixed to the motor cover.
- the position detection permanent magnet 51 can be moved toward the rotor 44 in accordance with the position detection permanent magnet 51, and the position detection permanent magnet 51 is rotated to hold the position detection permanent magnet 51.
- the length of the shaft 45 can be shortened.
- a magnetic shielding plate 59 is attached to the position detection board 55 on the ECU housing 11B side.
- the magnetic shielding plate 59 is made of an iron-based metal and has a function of suppressing switching noise generated in the power conversion circuit unit 15 from adversely affecting the GMR element 56 and the position detection circuit.
- the projected area of the magnetic shielding plate 59 on the GMR element 56 side is set to be larger than the area including the GMR element 56, thereby reducing the influence of switching noise on the GMR element 56.
- the magnetic shielding plate 59 is located in the space between the position detection board
- the position detection board 55 is configured to be attached to the motor cover 48 or the bus bar 52, the distance from the position detection board 55 to the power conversion circuit unit 15 becomes long, and the switching noise generated in the power conversion circuit unit 15 is The influence on the GMR element 56 can be suppressed.
- the control circuit unit 16 is provided with the GMR element 56 and the position detection circuit, there is a problem that the distance from the power conversion circuit unit 15 is shortened and is easily affected by switching noise. .
- the magnetic pole information detected by the position detection board 55 is transmitted to the control circuit unit 16, and the control circuit unit 16 controls the energization timing of the MOSFET of the power conversion circuit unit 15 based on the magnetic pole information. Therefore, it is necessary to connect the position detection board 55 and the control circuit unit 16 with a signal line. Therefore, in the present embodiment, the position detection board 55 and the control circuit unit 16 are connected by the floating connector 60.
- the floating connector 60 is a connector equipped with a mechanism (floating mechanism) that absorbs errors in the vertical and horizontal directions that occur when the connector is mounted on the board.
- the floating connector 60 absorbs errors and positional “displacement”, thereby improving the assembly accuracy of the board.
- it is used as a board-to-board connector.
- the floating connector 60 is located in the space between the position detection board
- the heat dissipation base 30 is provided in the ECU housing, and the power supply circuit unit 14 and the power conversion circuit unit 15 are fixed on both surfaces of the heat dissipation base 30.
- the heat dissipation base 30 is not provided.
- the power supply circuit unit 14 and the power conversion circuit unit 15 may be configured to be in close contact with each other.
- the metal substrate serves as a heat dissipation base.
- GMR element 56 mounts only the GMR element 56 on the position detection board 55 and provide the position detection circuit in the control circuit unit 16. Further, a magnetoresistive element such as an AMR element or TMR element other than the GMR element 56 may be used.
- the position detection permanent magnet constituting the position detection sensor is provided on the side opposite to the output side of the rotating shaft of the rotor housed in the motor housing, and the position of the motor cover is further increased.
- the detection sensor is configured, the position detection circuit thereof is provided, and the magnetoresistive element is disposed at a position facing the position detection permanent magnet.
- the position detection permanent magnet, the magnetoresistive effect element and the position detection circuit which constitute the position detection sensor are arranged in the motor housing, the mutual positional accuracy can be improved, and the power conversion Since the circuit portion, the magnetoresistive effect element, and the position detection circuit are moved away from each other, an effect that an accurate detection signal can be obtained can be obtained.
- this invention is not limited to the above-mentioned Example, Various modifications are included.
- the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
- the electric drive device is housed in a motor housing space formed by a motor housing and a motor cover, and is coupled to the motor housing having the rotor and the stator, and the motor cover.
- An ECU housing that forms an ECU housing space therebetween, an electronic control device that is housed in the ECU housing space between the ECU housing and the motor cover, and that drives and controls the electric motor, and the motor cover
- a permanent magnet for position detection provided on a rotating shaft of the electric motor supported by the shaft, and a magnetic pole of the rotor which is directly or indirectly attached to the motor cover and cooperates with the permanent magnet for position detection.
- the position detection board on which a magnetoresistive element for detecting an information signal is mounted.
- the position detection board includes an amplification circuit that amplifies the magnetic pole information signal of the magnetoresistive effect element, or an arithmetic function that calculates magnetic pole information from the magnetic pole information signal of the magnetoresistive effect element And a peripheral circuit are mounted.
- the electronic control device includes a power supply circuit unit, a power conversion circuit unit, and a control circuit unit. A bus bar connecting the stator winding and the power conversion circuit unit is fixed, and the position detection board is fixed to a mounting boss provided on the bus bar or fixed to a mounting boss provided on the motor cover. Has been.
- the electronic control device is arranged in the order of a control circuit portion, a power conversion circuit portion, and a power supply circuit portion as seen from the motor cover.
- the position detection board is disposed between the control circuit unit and the motor cover.
- the position detection permanent magnet is attached to an end of the rotating shaft, and the magnetoresistive element is the position detection permanent magnet.
- the motor storage space and the ECU storage space are shielded by the motor cover, the bus bar, and the position detection substrate.
- the position detection permanent magnet is attached to an end of the rotating shaft, and the magnetoresistive element is the position detection permanent magnet. Is mounted on the position detection board at a position facing the substrate, and a magnetic shielding plate is mounted on the opposite surface of the position detection board on which the magnetoresistive element is disposed. In still another preferred aspect, in any one of the aspects of the electric drive device, the position detection permanent magnet is attached to an end of the rotating shaft, and the magnetoresistive element is the position detection permanent magnet.
- the position detection board is mounted on the position detection board at a position opposite to the board, and the position detection board and the board of the control circuit unit are connected by a floating connector, and the magnetic pole information of the magnetoresistive effect element is connected via the floating connector. A signal or magnetic pole information is transmitted to the control circuit unit.
- the electric power steering device is housed in a motor housing space formed by a motor housing and a motor cover, and is coupled to the motor housing and the motor housing.
- An ECU housing that forms an ECU housing space therebetween, and a housing that is housed in the ECU housing space between the ECU housing and the motor cover, and that is used to drive and control the electric motor.
- An electronic control device that detects a direction and a rotational torque, and calculates a driving operation amount of the electric motor based on the detected value, and a position detection provided on a rotating shaft of the electric motor supported by the motor cover Permanent magnet and direct or indirect to the motor cover Attached to, and a, and the position detection board magnetoresistive element is mounted for detecting the magnetic pole information signal of the in cooperation with the position detecting permanent magnet rotor.
- the position detection board calculates an magnetic pole information from the magnetic pole information signal of the magnetoresistive element or an amplification circuit that amplifies the magnetic pole information signal of the magnetoresistive element.
- a microcomputer having an arithmetic function and a peripheral circuit are mounted.
- the electronic control device includes a power supply circuit unit, a power conversion circuit unit, and a control circuit unit, and the motor cover includes A bus bar connecting the stator winding and the power conversion circuit unit is fixed, and the position detection board is fixed to an attachment boss provided on the bus bar, or on an attachment boss provided on the motor cover. It is fixed.
- the electronic control unit is arranged in the order of a control circuit unit, a power conversion circuit unit, and a power supply circuit unit as viewed from the motor cover.
- the position detection board is disposed between the control circuit unit and the motor cover.
- the position detection permanent magnet is attached to an end of the rotating shaft, and the magnetoresistive element is the position detection permanent magnet. It is mounted on the position detection board at a position facing the magnet, and the motor storage space and the ECU storage space are shielded by the motor cover, the bus bar, and the position detection board.
- the position detection permanent magnet is attached to an end of the rotating shaft, and the magnetoresistive element is the position detection permanent magnet. It is mounted on the position detection board at a position facing the magnet, and a magnetic shielding plate is mounted on the opposite surface of the position detection board where the magnetoresistive element is arranged. In still another preferred aspect, in any one of the aspects of the electric power steering apparatus, the position detection permanent magnet is attached to an end of the rotating shaft, and the magnetoresistive element is the position detection permanent magnet.
- the position detection board is mounted on the position detection board at a position facing the magnet, and the position detection board and the board of the control circuit unit are connected by a floating connector, and the magnetic pole of the magnetoresistive element is connected via the floating connector. An information signal or magnetic pole information is transmitted to the control circuit unit.
- Electric power steering device 11A ... Motor housing, 11B ... ECU housing, 12 ... Cover, 12A-12C ... Connector terminal part, 14 ... Power supply circuit part, 15 ... Power conversion circuit part, 16 ... Control circuit part, 17 , 18 ... Metal substrate, 19 ... Capacitor, 20 ... Coil, 21 ... Switching element, 22 ... Power supply side connector, 23 ... High voltage side connector, 24 ... Low voltage side connector, 25 ... Switching element, 26U, 26V, 26W ... Output connector 27A, 27B, 27C, 27D ... connector terminals, 28 ... inverter side connector, 29 ... control board mounting boss, 30 ... heat dissipation base, 34 ...
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Abstract
Description
すなわち、当該電動駆動装置は、その1つの態様において、モータハウジングとモータカバーによって形成されるモータ収納空間に収納され、ロータとステータを備えた電動モータと、前記モータハウジングに結合され、前記モータカバーとの間にECU収納空間を形成するECUハウジングと、前記ECUハウジング及び前記モータカバーの間の前記ECU収納空間に収容され、前記電動モータを駆動制御するための電子制御装置と、前記モータカバーに軸支された前記電動モータの回転軸に設けられた位置検出用永久磁石と、前記モータカバーに直接的、或いは間接的に取り付けられ、前記位置検出用永久磁石と協働して前記ロータの磁極情報信号を検出する磁気抵抗効果型素子が実装された位置検出基板と、を備えている。
前記電動駆動装置の好ましい態様において、前記位置検出基板には、磁気抵抗効果型素子の磁極情報信号を増幅する増幅回路、或いは前記磁気抵抗効果型素子の磁極情報信号から磁極情報を演算する演算機能を有したマイクロコンピュータと周辺回路が実装されている。
別の好ましい態様では、前記電動駆動装置の態様のいずれかにおいて、前記電子制御装置は、電源回路部と、電力変換回路部と、制御回路部から構成されており、前記モータカバーには、前記ステータの巻線と前記電力変換回路部を接続するバスバーが固定されており、前記位置検出基板は、前記バスバーに設けた取付ボスに固定されているか、或いは前記モータカバーに設けた取付ボスに固定されている。
さらに別の好ましい態様では、前記電動駆動装置の態様のいずれかにおいて、前記電子制御装置は、前記モータカバーから見て、制御回路部、電力変換回路部、電源回路部の順で配置されており、前記位置検出基板は、前記制御回路部と前記モータカバーの間に配置されている。
さらに別の好ましい態様では、前記電動駆動装置の態様のいずれかにおいて、前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、更に、前記モータカバーと前記バスバー、及び位置検出基板によって、前記モータ収納空間と前記ECU収納空間とが遮蔽されている。
さらに別の好ましい態様では、前記電動駆動装置の態様のいずれかにおいて、前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、更に、前記位置検出基板の前記磁気抵抗効果型素子が配置されている反対側の面には、磁気遮蔽板が実装されている。
さらに別の好ましい態様では、前記電動駆動装置の態様のいずれかにおいて、前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、更に、前記位置検出基板と前記制御回路部の基板とは、フローティングコネクタによって接続され、前記フローティングコネクタを介して前記磁気抵抗効果型素子の磁極情報信号、或いは磁極情報が前記制御回路部に伝送される。
また、前述した実施形態に基づく電動パワーステアリング装置としては、例えば、以下に述べる態様のものが考えられる。
すなわち、当該電動パワーステアリング装置は、モータハウジングとモータカバーによって形成されるモータ収納空間に収納され、ステアリングシャフトに操舵補助力を付与する電動モータと、前記モータハウジングに結合され、前記モータカバーとの間にECU収納空間を形成するECUハウジングと、前記ECUハウジング及び前記モータカバーの間の前記ECU収納空間に収容され、前記電動モータを駆動制御するため、少なくともトルクセンサによって自動車のステアリングシャフトの回動方向と回動トルクを検出し、この検出値に基づいて前記電動モータの駆動操作量を演算する電子制御装置と、前記モータカバーに軸支された前記電動モータの回転軸に設けられた位置検出用永久磁石と、前記モータカバーに直接的、或いは間接的に取り付けられ、前記位置検出用永久磁石と協働して前記ロータの磁極情報信号を検出する磁気抵抗効果型素子が実装された位置検出基板と、を備えている。
前記電動パワーステアリング装置の好ましい態様において、前記位置検出基板には、前記磁気抵抗効果型素子の磁極情報信号を増幅する増幅回路、或いは前記磁気抵抗効果型素子の磁極情報信号から磁極情報を演算する演算機能を有したマイクロコンピュータと周辺回路が実装されている。
別の好ましい態様では、前記電動パワーステアリング装置の態様のいずれかにおいて、前記電子制御装置は、電源回路部と、電力変換回路部と、制御回路部から構成されており、前記モータカバーには、前記ステータの巻線と前記電力変換回路部を接続するバスバーが固定されており、前記位置検出基板は、前記バスバーに設けた取付ボスに固定されているか、或いは前記モータカバーに設けた取付ボスに固定されている。
さらに別の好ましい態様では、前記電動パワーステアリング装置の態様のいずれかにおいて、前記電子制御装置は、前記モータカバーから見て、制御回路部、電力変換回路部、電源回路部の順で配置されており、前記位置検出基板は、前記制御回路部と前記モータカバーの間に配置されている。
さらに別の好ましい態様では、前記電動パワーステアリング装置の態様のいずれかにおいて、前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、更に、前記モータカバーと前記バスバー、及び位置検出基板によって、前記モータ収納空間と前記ECU収納空間とが遮蔽されている。
さらに別の好ましい態様では、前記電動パワーステアリング装置の態様のいずれかにおいて、前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、更に、前記位置検出基板の前記磁気抵抗効果型素子が配置されている反対側の面には、磁気遮蔽板が実装されている。
さらに別の好ましい態様では、前記電動パワーステアリング装置の態様のいずれかにおいて、前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、更に、前記位置検出基板と前記制御回路部の基板とは、フローティングコネクタによって接続され、前記フローティングコネクタを介して前記磁気抵抗効果型素子の磁極情報信号、或いは磁極情報が前記制御回路部に伝送される。
Claims (14)
- モータハウジングとモータカバーによって形成されるモータ収納空間に収納され、ロータとステータを備えた電動モータと、
前記モータハウジングに結合され、前記モータカバーとの間にECU収納空間を形成するECUハウジングと、
前記ECUハウジング及び前記モータカバーの間の前記ECU収納空間に収容され、前記電動モータを駆動制御するための電子制御装置と、
前記モータカバーに軸支された前記電動モータの回転軸に設けられた位置検出用永久磁石と、
前記モータカバーに直接的、或いは間接的に取り付けられ、前記位置検出用永久磁石と協働して前記ロータの磁極情報信号を検出する磁気抵抗効果型素子が実装された位置検出基板と、
を備えたことを特徴とする電動駆動装置。 - 請求項1に記載の電動駆動装置において、
前記位置検出基板には、磁気抵抗効果型素子の磁極情報信号を増幅する増幅回路、或いは前記磁気抵抗効果型素子の磁極情報信号から磁極情報を演算する演算機能を有したマイクロコンピュータと周辺回路が実装されていることを特徴とする電動駆動装置。 - 請求項1に記載の電動駆動装置において、
前記電子制御装置は、電源回路部と、電力変換回路部と、制御回路部から構成されており、
前記モータカバーには、前記ステータの巻線と前記電力変換回路部を接続するバスバーが固定されており、
前記位置検出基板は、前記バスバーに設けた取付ボスに固定されているか、或いは前記モータカバーに設けた取付ボスに固定されていることを特徴とする電動駆動装置。 - 請求項2に記載の電動駆動装置において、
前記電子制御装置は、前記モータカバーから見て、制御回路部、電力変換回路部、電源回路部の順で配置されており、
前記位置検出基板は、前記制御回路部と前記モータカバーの間に配置されていることを特徴とする電動駆動装置。 - 請求項4に記載の電動駆動装置において、
前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、
前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、
更に、前記モータカバーと前記バスバー、及び位置検出基板によって、前記モータ収納空間と前記ECU収納空間とが遮蔽されていることを特徴とする電動駆動装置。 - 請求項4に記載の電動駆動装置において、
前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、
前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、
更に、前記位置検出基板の前記磁気抵抗効果型素子が配置されている反対側の面には、磁気遮蔽板が実装されていることを特徴とする電動駆動装置。 - 請求項4に記載の電動駆動装置において、
前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、
前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、
更に、前記位置検出基板と前記制御回路部の基板とは、フローティングコネクタによって接続され、前記フローティングコネクタを介して前記磁気抵抗効果型素子の磁極情報信号、或いは磁極情報が前記制御回路部に伝送されることを特徴とする電動駆動装置。 - モータハウジングとモータカバーによって形成されるモータ収納空間に収納され、ステアリングシャフトに操舵補助力を付与する電動モータと、
前記モータハウジングに結合され、前記モータカバーとの間にECU収納空間を形成するECUハウジングと、
前記ECUハウジング及び前記モータカバーの間の前記ECU収納空間に収容され、前記電動モータを駆動制御するため、少なくともトルクセンサによって自動車のステアリングシャフトの回動方向と回動トルクを検出し、この検出値に基づいて前記電動モータの駆動操作量を演算する電子制御装置と、
前記モータカバーに軸支された前記電動モータの回転軸に設けられた位置検出用永久磁石と、
前記モータカバーに直接的、或いは間接的に取り付けられ、前記位置検出用永久磁石と協働して前記ロータの磁極情報信号を検出する磁気抵抗効果型素子が実装された位置検出基板と、
を備えたことを特徴とする電動パワーステアリング装置。 - 請求項8に記載の電動パワーステアリング装置において、
前記位置検出基板には、前記磁気抵抗効果型素子の磁極情報信号を増幅する増幅回路、或いは前記磁気抵抗効果型素子の磁極情報信号から磁極情報を演算する演算機能を有したマイクロコンピュータと周辺回路が実装されていることを特徴とする電動パワーステアリング装置。 - 請求項9に記載の電動パワーステアリング装置において、
前記電子制御装置は、電源回路部と、電力変換回路部と、制御回路部から構成されており、
前記モータカバーには、前記ステータの巻線と前記電力変換回路部を接続するバスバーが固定されており、
前記位置検出基板は、前記バスバーに設けた取付ボスに固定されているか、或いは前記モータカバーに設けた取付ボスに固定されていることを特徴とする電動パワーステアリング装置。 - 請求項9に記載の電動パワーステアリング装置において、
前記電子制御装置は、前記モータカバーから見て、制御回路部、電力変換回路部、電源回路部の順で配置されており、
前記位置検出基板は、前記制御回路部と前記モータカバーの間に配置されていることを特徴とする電動パワーステアリング装置。 - 請求項11に記載の電動パワーステアリング装置において、
前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、
前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、
更に、前記モータカバーと前記バスバー、及び位置検出基板によって、前記モータ収納空間と前記ECU収納空間とが遮蔽されていることを特徴とする電動パワーステアリング装置。 - 請求項11に記載の電動パワーステアリング装置において、
前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、
前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、
更に、前記位置検出基板の前記磁気抵抗効果型素子が配置されている反対側の面には、磁気遮蔽板が実装されていることを特徴とする電動パワーステアリング装置。 - 請求項11に記載の電動パワーステアリング装置において、
前記位置検出用永久磁石は、前記回転軸の端部に取り付けられ、
前記磁気抵抗効果型素子は、前記位置検出用永久磁石に対向する位置で前記位置検出基板に実装され、
更に、前記位置検出基板と前記制御回路部の基板とは、フローティングコネクタによって接続され、前記フローティングコネクタを介して前記磁気抵抗効果型素子の磁極情報信号、或いは磁極情報が前記制御回路部に伝送されることを特徴とする電動パワーステアリング装置。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230202605A1 (en) * | 2018-07-27 | 2023-06-29 | Livewire Ev, Llc | Drive assembly for an electric vehicle |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017006429A1 (ja) * | 2015-07-07 | 2017-01-12 | 日産自動車株式会社 | ホィール駆動装置の配設構造 |
EP3512078A4 (en) * | 2016-09-12 | 2019-08-21 | Mitsubishi Electric Corporation | MOTOR CONTROL DEVICE AND CONTROL DEVICE FOR ELECTRIC POWER STEERING |
JP6867245B2 (ja) | 2017-06-28 | 2021-04-28 | 日立Astemo株式会社 | 電動駆動装置及び電動パワーステアリング装置 |
JP6723201B2 (ja) * | 2017-07-13 | 2020-07-15 | 日立オートモティブシステムズ株式会社 | 電動駆動装置及び電動パワーステアリング装置 |
FR3072119B1 (fr) * | 2017-10-10 | 2019-11-08 | Somfy Activites Sa | Actionneur electromecanique tubulaire et installation domotique comprenant un tel actionneur |
CN109756076B (zh) * | 2017-11-01 | 2022-05-20 | 德昌电机(深圳)有限公司 | 电机 |
WO2019186832A1 (ja) * | 2018-03-28 | 2019-10-03 | 三菱電機株式会社 | 回転電機及びそれを用いたエレベータのドア装置 |
JPWO2020053992A1 (ja) * | 2018-09-12 | 2020-10-22 | 三菱電機株式会社 | 磁界遮蔽板付きエンコーダ |
FR3087966B1 (fr) * | 2018-10-26 | 2021-08-20 | Valeo Equip Electr Moteur | Bloc de commande d'une machine electrique tournante et procede de montage d'un tel bloc de commande |
DE102018131712A1 (de) * | 2018-12-11 | 2020-06-18 | Thyssenkrupp Ag | Magnetische Abschirmung eines Drehmomentsensors für eine elektromechanische Hilfskraftlenkung eines Kraftfahrzeugs |
US11555719B2 (en) | 2018-12-12 | 2023-01-17 | Hl Mando Corporation | Actuator assembly having rotary sensor responsive to rotation of magnet |
DE112018008135T5 (de) * | 2018-12-14 | 2021-07-29 | Mitsubishi Electric Corporation | Elektromotor |
WO2020137568A1 (ja) * | 2018-12-27 | 2020-07-02 | 日立オートモティブシステムズ株式会社 | 電子制御装置及び電動パワーステアリング装置 |
JP6989546B2 (ja) * | 2019-03-01 | 2022-01-05 | ファナック株式会社 | エンコーダ及びその製造方法 |
JP7259488B2 (ja) * | 2019-03-29 | 2023-04-18 | 日本電産株式会社 | モータ |
JP2020167877A (ja) * | 2019-03-29 | 2020-10-08 | 日本電産エレシス株式会社 | コネクタモジュール及び電力変換装置 |
JP2021000914A (ja) * | 2019-06-21 | 2021-01-07 | 株式会社東海理化電機製作所 | センサユニット |
JP7348033B2 (ja) * | 2019-11-06 | 2023-09-20 | ファナック株式会社 | 動力信号が入力されるコネクタを備えた電動機、及び電動機の製造方法 |
US11231297B2 (en) | 2020-01-09 | 2022-01-25 | Robert Bosch Gmbh | Providing availability of rotary position sensor information after hardware failures |
CN111969796A (zh) * | 2020-06-23 | 2020-11-20 | 苏州天姆艾汽车部件有限公司 | 电机测速装置及电机 |
USD909319S1 (en) | 2020-07-08 | 2021-02-02 | Impact Ip, Llc | Circuit board |
WO2022179673A1 (en) * | 2021-02-23 | 2022-09-01 | HELLA GmbH & Co. KGaA | Electronic control unit for a vehicle, electric power steering system and vehicle |
TWI816124B (zh) * | 2021-05-14 | 2023-09-21 | 士林電機廠股份有限公司 | 具有驅動器之氣冷動力系統 |
TWI816123B (zh) * | 2021-05-14 | 2023-09-21 | 士林電機廠股份有限公司 | 具有驅動器之液冷動力系統 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009030350A2 (de) * | 2007-08-28 | 2009-03-12 | Sew-Eurodrive Gmbh & Co. Kg | Elektromotor mit winkelsensor |
JP2011176999A (ja) * | 2009-06-24 | 2011-09-08 | Denso Corp | 駆動装置 |
JP5058339B2 (ja) * | 2008-06-13 | 2012-10-24 | 三菱電機株式会社 | モータ位置決め構造 |
WO2014054098A1 (ja) * | 2012-10-01 | 2014-04-10 | 三菱電機株式会社 | 電動駆動装置 |
JP2014183674A (ja) * | 2013-03-21 | 2014-09-29 | Hitachi Automotive Systems Steering Ltd | 回転角検出装置 |
WO2015083478A1 (ja) * | 2013-12-05 | 2015-06-11 | 日立オートモティブシステムズ株式会社 | 回転電機 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2860706B2 (ja) * | 1990-11-30 | 1999-02-24 | キヤノン株式会社 | モーターの電気配線接続構造 |
US6081056A (en) * | 1996-03-07 | 2000-06-27 | Seiko Epson Corporation | Motor and method for producing the same |
JP2011160636A (ja) * | 2010-02-04 | 2011-08-18 | Denso Corp | モータ、及び、これを用いた電動パワーステアリング装置 |
JP5692588B2 (ja) * | 2010-12-28 | 2015-04-01 | 株式会社デンソー | 駆動装置 |
JP5461493B2 (ja) | 2011-09-14 | 2014-04-02 | 日立オートモティブシステムズ株式会社 | 電動パワーステアリング装置 |
US20130062137A1 (en) | 2011-09-14 | 2013-03-14 | Hitachi Automotive Systems, Ltd. | Electric Power Steering System |
JP6343210B2 (ja) * | 2014-09-03 | 2018-06-13 | 日立オートモティブシステムズ株式会社 | 電動駆動装置及び電動パワーステアリング装置 |
-
2016
- 2016-03-09 JP JP2016045415A patent/JP6639962B2/ja active Active
- 2016-08-12 WO PCT/JP2016/073697 patent/WO2017154236A1/ja active Application Filing
- 2016-08-12 CN CN201680045548.5A patent/CN107925315B/zh active Active
- 2016-08-12 DE DE112016006570.1T patent/DE112016006570T5/de active Pending
- 2016-08-12 KR KR1020187003359A patent/KR102106723B1/ko active IP Right Grant
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009030350A2 (de) * | 2007-08-28 | 2009-03-12 | Sew-Eurodrive Gmbh & Co. Kg | Elektromotor mit winkelsensor |
JP5058339B2 (ja) * | 2008-06-13 | 2012-10-24 | 三菱電機株式会社 | モータ位置決め構造 |
JP2011176999A (ja) * | 2009-06-24 | 2011-09-08 | Denso Corp | 駆動装置 |
WO2014054098A1 (ja) * | 2012-10-01 | 2014-04-10 | 三菱電機株式会社 | 電動駆動装置 |
JP2014183674A (ja) * | 2013-03-21 | 2014-09-29 | Hitachi Automotive Systems Steering Ltd | 回転角検出装置 |
WO2015083478A1 (ja) * | 2013-12-05 | 2015-06-11 | 日立オートモティブシステムズ株式会社 | 回転電機 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230202605A1 (en) * | 2018-07-27 | 2023-06-29 | Livewire Ev, Llc | Drive assembly for an electric vehicle |
US11858580B2 (en) * | 2018-07-27 | 2024-01-02 | Livewire Ev, Llc | Drive assembly for an electric vehicle |
Also Published As
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CN107925315A (zh) | 2018-04-17 |
US20180248451A1 (en) | 2018-08-30 |
US10971976B2 (en) | 2021-04-06 |
CN107925315B (zh) | 2021-01-08 |
JP2017163682A (ja) | 2017-09-14 |
JP6639962B2 (ja) | 2020-02-05 |
KR102106723B1 (ko) | 2020-05-04 |
DE112016006570T5 (de) | 2018-11-15 |
KR20180026512A (ko) | 2018-03-12 |
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