WO2019198658A1 - 駆動装置および駆動ユニット - Google Patents

駆動装置および駆動ユニット Download PDF

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Publication number
WO2019198658A1
WO2019198658A1 PCT/JP2019/015283 JP2019015283W WO2019198658A1 WO 2019198658 A1 WO2019198658 A1 WO 2019198658A1 JP 2019015283 W JP2019015283 W JP 2019015283W WO 2019198658 A1 WO2019198658 A1 WO 2019198658A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
connectors
control unit
terminal
system connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/015283
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English (en)
French (fr)
Japanese (ja)
Inventor
雅志 山▲崎▼
幸生 堀場
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to CN201980024348.5A priority Critical patent/CN111937279B/zh
Publication of WO2019198658A1 publication Critical patent/WO2019198658A1/ja
Priority to US17/034,318 priority patent/US11888345B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/50—Bases; Cases formed as an integral body
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/62933—Comprising exclusively pivoting lever
    • H01R13/62938—Pivoting lever comprising own camming means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/006—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits the coupling part being secured to apparatus or structure, e.g. duplex wall receptacle
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • 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
    • B62D5/0409—Electric motor acting on the steering column
    • 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
    • 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
    • B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2105/00—Three poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
    • 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
    • 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
    • H02K11/24—Devices for sensing torque, or actuated thereby
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/06—Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor

Definitions

  • the present disclosure relates to a drive device and a drive unit.
  • Patent Document 1 discloses a drive device used in an electric power steering device.
  • the motor has two winding sets
  • the control unit has two control units so as to independently supply current to each winding set.
  • the control unit is provided with two connectors corresponding to each control unit. These connectors are formed integrally with a cover that covers each control unit.
  • the present disclosure has been made in view of the above points, and an object of the present disclosure is to provide a drive device having a reduced physique and a drive unit including the drive device.
  • a drive device includes a motor having two winding sets, a control unit that is arranged coaxially with the motor, and that controls driving of the motor, and a connector unit that is connected to an external connector that is a connector of an external cable With.
  • the control unit includes a first system control unit that controls energization of one winding set, and a second system control unit that controls energization of the other winding set.
  • the connector unit includes a first system terminal connected to the first system control unit, a first system connector holding the first system terminal, a second system terminal connected to the second system control unit, And a second system connector that holds two system terminals.
  • the insertion / extraction direction of the first system connector and the insertion / extraction direction of the second system connector are the same as the axial direction of the motor.
  • the first system connector and the second system connector are such that the longitudinal direction or the short direction of the front ends of the connectors are aligned in a straight line, and the distance between the connectors is smaller than the width in the short direction of both connectors. Are arranged close to each other.
  • the first system connector and the second system connector protrude in a direction perpendicular to the direction in which the connectors are arranged, and have a protrusion for locking a lever provided on the external connector.
  • the protrusion does not protrude in the direction in which the connectors are arranged, and is not formed in the gap between the connectors.
  • the connectors can be brought close to each other. Therefore, the connector installation space is reduced, and the size of the drive device can be reduced. Further, since the protrusions are separated from each other, there is a margin in the work space when assembling the external connector to each connector, that is, the space for operating the lever of the external connector, and the assemblability is improved.
  • the physique of the entire unit can be reduced in size, and the assembling property of the external connector and the lever can be improved.
  • FIG. 1 is a configuration diagram of an electric power steering device to which the driving device of each embodiment is applied.
  • FIG. 2 is a longitudinal sectional view of the drive device, 3 is a cross-sectional view taken along line III-III in FIG.
  • FIG. 4 is a schematic diagram showing the configuration of a multi-homologous axis motor.
  • FIG. 5 is a circuit configuration diagram of the driving device according to the first embodiment.
  • FIG. 6 is a control block diagram of the driving apparatus according to the first embodiment.
  • FIG. 7 is a front view of the drive device according to the first embodiment, and is a view taken along arrow VII in FIG.
  • FIG. 8 is a top view of the drive device according to the first embodiment, and is a cross-sectional view taken along line VIII-VIII in FIG.
  • FIG. 9 is a diagram illustrating the board and the connector unit according to the first embodiment, and is a view taken along arrow IX in FIG.
  • FIG. 10 is a diagram illustrating a front surface of the driving device according to the first embodiment and an external connector in an unlocked state.
  • FIG. 11 is a view showing the upper surface of the driving apparatus according to the first embodiment and the external connector in an unlocked state, and is a cross-sectional view taken along the line XI-XI in FIG.
  • FIG. 12 is a diagram illustrating the front surface of the driving device according to the first embodiment and the external connector in a locked state.
  • FIG. 13 is a view showing the upper surface of the driving device according to the first embodiment and the external connector in a locked state, and is a cross-sectional view taken along the line XIII-XIII of FIG.
  • FIG. 14 is a longitudinal sectional view of the drive device according to the second embodiment
  • 15 is another longitudinal sectional view of the driving apparatus according to the second embodiment, and is a sectional view taken along line XV-XV in FIG.
  • FIG. 16 is a top view of the drive device according to the second embodiment, and is a view taken along arrow XVI in FIG.
  • FIG. 17 is a diagram illustrating an upper surface of the driving device according to the second embodiment and an external connector in an unlocked state.
  • FIG. 18 is a front view of the drive device according to the second embodiment, and is a view taken in the direction of arrow XVIII in FIG.
  • FIG. 19 is a view showing the upper surface of the driving device according to the second embodiment and the external connector in the locked state.
  • FIG. 20 is a front view of the drive device according to the second embodiment, and is a view taken along arrow XX in FIG.
  • FIG. 21 is a diagram illustrating the upper surface of the driving device according to the third embodiment and the external connector in an unlocked state.
  • the drive device is applied to an electric power steering device of a vehicle and outputs a steering assist torque.
  • FIG. 1 shows an overall configuration of a steering system 99 including an electric power steering device 90.
  • the electric power steering device 90 in FIG. 1 is a column assist type, it can be similarly applied to a rack assist type electric power steering device.
  • the steering system 99 includes a handle 91, a steering shaft 92, a pinion gear 96, a rack shaft 97, wheels 98, an electric power steering device 90, and the like.
  • a steering shaft 92 is connected to the handle 91.
  • a pinion gear 96 provided at the tip of the steering shaft 92 meshes with the rack shaft 97.
  • a pair of wheels 98 are provided at both ends of the rack shaft 97 via tie rods or the like.
  • the electric power steering device 90 includes a steering torque sensor 93, a control unit 10, a motor 80, a speed reducer 94, and the like.
  • the steering torque sensor 93 is provided in the middle of the steering shaft 92 and detects the steering torque of the driver.
  • the duplicated steering torque sensor 93 includes a first torque sensor 931 and a second torque sensor 932, and detects the first steering torque trq1 and the second steering torque trq2 doubly.
  • the detected value of one steering torque trq may be used in common for the two systems.
  • the control unit 10 acquires the steering torques trq1 and trq2 detected by the steering torque sensor 93 and the electrical angles ⁇ 1 and ⁇ 2 of the motor 80 detected by the rotation angle sensor.
  • the control unit 10 controls the driving of the motor 80 so that the motor 80 generates a desired assist torque based on such information and information such as a motor current detected inside the control unit 10.
  • the assist torque output from the motor 80 is transmitted to the steering shaft 92 via the speed reducer 94.
  • the control unit 10 is integrally formed on one side of the motor 80 in the axial direction.
  • the motor 23 and the control unit 10 constitute an electromechanical integrated drive device 1.
  • the control unit 10 is disposed coaxially with the motor 80 on the side opposite to the output side of the motor 80.
  • the control unit 10 may be arranged coaxially with the motor 80 on the output side of the motor 80.
  • the motor 80 is a three-phase brushless motor, and includes a stator 840, a rotor 860, and a housing 830 that accommodates them.
  • the stator 840 has a stator core 845 fixed to the housing 830 and two sets of three-phase winding sets 801 and 802 assembled to the stator core 845.
  • Lead wires 851, 853, and 855 extend from the respective phase windings constituting the first winding set 801.
  • Lead wires 852, 854, 856 extend from the respective phase windings constituting the second winding set 802.
  • the rotor 860 includes a shaft 87 supported by a rear bearing 835 and a front bearing 836, and a rotor core 865 in which the shaft 87 is fitted.
  • the rotor 860 is provided inside the stator 840 and is rotatable relative to the stator 840.
  • a permanent magnet 88 is provided at one end of the shaft 87.
  • the housing 830 has a cylindrical case 834, a rear frame end 837 provided at one end of the case 834, and a front frame end 838 provided at the other end of the case 834.
  • the rear frame end 837 and the front frame end 838 are fastened to each other by bolts or the like.
  • Lead wires 851 and 852 of each winding set 801 and 802 are connected to the control unit 10 through the lead wire insertion holes 839 of the rear frame end 837.
  • the winding sets 801 and 802 have the same electrical characteristics and are arranged on a common stator with an electrical angle of 30 [deg].
  • the control unit 10 includes a control unit 20, a cover 21 covering the control unit 20, and the control unit 20 with external connectors 161 and 162 that are connectors of external cables 191 and 192 (see FIG. 2). 1), and the like.
  • the cover 21 protects the control unit 20 from external impacts and prevents entry of dust, water, and the like into the control unit 20.
  • the control unit 20 includes a substrate 230 fixed to the rear frame end 837 and various electronic components mounted on the substrate 230. 2 and 3, illustration of electronic components is omitted. The electronic component will be described later with reference to FIGS.
  • the board 230 is, for example, a printed board, and is provided at a position facing the rear frame end 837.
  • the board 230 is provided with electronic components for two systems independently for each system, and has a completely redundant configuration. In the first embodiment, the number of substrates 230 is one, but in other embodiments, two or more substrates may be provided.
  • FIG. 5 shows a circuit configuration of the driving device 1.
  • the control unit 20 is a two-system motor control device including two inverters 601 and 602 as two “power converters” and two microcomputers 401 and 402, and a motor having two sets of winding sets 801 and 802. Power is supplied to 80.
  • a unit of components including a winding set, an inverter, and a microcomputer is defined as “system”.
  • first system component or signal is prefixed with “first” or “first system”
  • second system component or signal is prefixed with “second”.
  • second or “Or” second system”. Matters common to each system are collectively described without attaching “first, second” and “first system, second system”. Also, except for the switching element, “1” is added to the end of the code of the first system component or signal, and “2” is added to the end of the code of the second system component or signal.
  • the control unit 20 includes inverters 601, 602, power relays 141, 142, rotation angle detection units 251, 252, microcomputers 401, 402, and the like. In the first embodiment, power is supplied to each system from two power sources 111 and 112.
  • inverters 601, 602 for example, six switching elements 611 to 616 and 621 to 626 such as MOSFETs are bridge-connected.
  • the first inverter 601 performs a switching operation in accordance with a drive signal from the first microcomputer 401, converts the DC power of the first power supply 111, and supplies it to the first winding set 801.
  • the second inverter 602 performs a switching operation in accordance with a drive signal from the second microcomputer 402, converts the DC power of the second power source 112, and supplies it to the second winding set 802.
  • the power supply relays 141 and 142 are provided on the power supply lines of the input units of the inverters 601 and 602.
  • the power relays 141 and 142 illustrated in FIG. 5 include a protection function at the time of reverse power connection in which two switching elements having parasitic diodes in opposite directions are connected in series.
  • the power relay may be composed of one switching element or mechanical relay that does not include the reverse connection prevention function.
  • Capacitors 281 and 282 are provided at input portions of the inverters 601 and 602. Capacitors 281 and 282 smooth the electric power input from the power supply and prevent noise from flowing out due to the switching operation of the switching element. Capacitors 281 and 282 constitute a filter circuit together with an inductor (not shown).
  • the first rotation angle detection unit 251 detects the electrical angle ⁇ 1 of the motor 80 and outputs it to the first microcomputer 401.
  • the second rotation angle detector 252 detects the electrical angle ⁇ ⁇ b> 2 of the motor 80 and outputs it to the second microcomputer 402.
  • the first rotation angle detector 251 has a power line and a signal line that are independent of the second rotation angle detector 252.
  • the first microcomputer 401 calculates a drive signal commanded to the first inverter 601 based on feedback information such as the steering torque trq1, the current Im1, and the rotation angle ⁇ 1.
  • the second microcomputer 402 calculates a drive signal commanded to the second inverter 602 based on feedback information such as the steering torque trq2, the current Im2, and the rotation angle ⁇ 2.
  • FIG. 6 shows the control configuration of the drive unit 1.
  • the first system and the second system are all composed of two independent element groups, and have a so-called “complete two-system” redundant configuration.
  • each electronic component of the first system that controls the energization of the winding set 801 constitutes a first system control unit 201.
  • each electronic component of the second system that controls the energization of the winding set 802 constitutes a second system control unit 202.
  • the connector unit 35 is connected to a first system terminal group connected to the first system control unit 201, a first system connector 351 that holds the first system terminal group, and a second system control unit 202.
  • a second system terminal group and a second system connector 352 that holds the second system terminal group are included.
  • the first system terminal includes a first power supply terminal 131 for supplying power to the first system control unit 201, a first vehicle communication terminal 321 and a first torque for inputting a signal to the first system control unit 201. And a signal terminal 331.
  • the second system terminal includes a second power terminal 132 for supplying power to the second system control unit 202, a second vehicle communication terminal 322 for inputting a signal to the second system control unit 202, and a second torque. And a signal terminal 332.
  • the first power supply terminal 131 is connected to the first power supply 111.
  • the power of the first power supply 111 is supplied to the first winding set 801 via the first power supply terminal 131, the first power supply relay 141, and the first inverter 601.
  • the power of the first power supply 111 is also supplied to the first microcomputer 401 and the first system sensors.
  • the second power supply terminal 132 is connected to the second power supply 112.
  • the electric power of the second power supply 112 is supplied to the second winding set 802 via the second power supply terminal 132, the second power supply relay 142, and the second inverter 602.
  • the power of the second power source 112 is also supplied to the second microcomputer 402 and the second system sensors.
  • the first vehicle communication terminal 311 is connected between the first CAN 301 and the first vehicle communication circuit 321.
  • Second vehicle communication terminal 312 is connected between second CAN 302 and second vehicle communication circuit 322.
  • the two vehicle communication terminals 311 and 312 may be connected to a common CAN.
  • a vehicle communication network other than CAN a network of any standard such as CAN-FD (CAN Flexible Data rate) or FlexRay may be used.
  • the first torque signal terminal 331 is connected between the first torque sensor 931 and the first torque sensor input circuit 341.
  • the first torque sensor input circuit 341 notifies the first microcomputer 401 of the steering torque trq1 detected by the first torque signal terminal 331.
  • the second torque signal terminal 332 is connected between the second torque sensor 932 and the second torque sensor input circuit 342.
  • the second torque sensor input circuit 342 notifies the second microcomputer 402 of the steering torque trq2 detected by the second torque signal terminal 332.
  • the microcomputers 401 and 402 can transmit and receive information to and from each other through communication between microcomputers. When an abnormality occurs in one system, the control unit 20 continues the motor control in the other normal system.
  • the connector part 35 includes a base part 350, connectors 351 and 352, power supply terminals 131 and 132, a first vehicle communication terminal 321 and a first torque signal terminal 331 as “first signal terminals”, and a “second signal”. It has the 2nd vehicle communication terminal 322 and the 2nd torque signal terminal 332 as a terminal.
  • the base portion 350 is fixed to the substrate 230 with the screw 15. A part of the base portion 350 protrudes outside the cover 21 through the opening 211 of the cover 21.
  • the connectors 351 and 352 protrude from the base part 350 in the axial direction outside the cover 21.
  • the first system connector 351 holds a first power supply terminal 131, a first vehicle communication terminal 311, and a first torque signal terminal 331.
  • Second system connector 352 holds second power supply terminal 132, second vehicle communication terminal 312, and second torque signal terminal 332.
  • the insertion / extraction direction of the first system connector 351 is the same as the insertion / extraction direction of the second system connector 352 and is the axial direction.
  • the insertion / removal direction is a direction when the external connector is inserted into / removed from the connectors 351 and 352, and coincides with the direction of the gap between the connectors 351 and 352.
  • the frontage is an opening at the tip of the connectors 351 and 352.
  • the first system connector 351 and the second system connector 352 are arranged close to each other so that the distance G between the connectors is smaller than the width W in the short direction of both connectors. .
  • the first system connector 351 and the second system connector 352 are arranged so that the longitudinal directions of the front ends of the connectors are aligned. Between the first system connector 351 and the second system connector 352, a rib 390 for connecting these connectors is formed.
  • the first power supply terminal 131 is disposed closer to the second system connector 352 in the front of the first system connector 351 than the first signal terminal.
  • the first power supply terminal 131 is disposed on the second system connector 352 side in the longitudinal direction of the frontage among the frontage of the first system connector 351.
  • the first signal terminal is disposed on the opposite side of the front port of the first system connector 351 from the second system connector 352 in the longitudinal direction of the front port.
  • the second power supply terminal 132 is disposed closer to the first system connector 351 than the second signal terminal in the opening of the second system connector 352.
  • the second power supply terminal 132 is disposed on the first system connector 351 side in the longitudinal direction of the frontage among the frontage of the second system connector 352.
  • the second signal terminal is disposed on the opposite side of the front port of the second system connector 352 from the first system connector 351 in the longitudinal direction of the front port.
  • the first system terminal (the first power supply terminal 131, the first vehicle communication terminal 321 and the first torque signal terminal 331) and the second system with the boundary surface B located between the connectors 351 and 352 as a boundary.
  • the terminals (second power supply terminal 132, second vehicle communication terminal 322, and second torque signal terminal 332) are mirror-arranged so that the power supply terminals 131 and 132 are located in the center.
  • the first power supply terminal 131 and the second power supply terminal 132 are arranged close to the center of the connector arrangement space, and the signal terminals are arranged at both ends of the connector arrangement space.
  • the first rotation angle detection unit 251 and the second rotation angle detection unit 252 shown in FIG. 6 are packaged together to constitute the rotation angle sensor 25 shown in FIG.
  • the first system control unit 201 and the second system control unit 202 are mounted on one substrate 230.
  • the mounting area A1 of the first system control unit 201 is disposed on one side of the board 230 with respect to the boundary surface B that passes through the rotation angle sensor 25 and is parallel to the axis Ax.
  • the mounting area A2 of the second system control unit 202 is arranged on the other side of the board 230 with respect to the boundary surface B. That is, the first system control unit 201 and the second system control unit 202 are separated at the boundary surface B.
  • the first power relay 141, the first capacitor 281 and the first inverter 601 are first power system components of the first system control unit 201.
  • the second power relay 142, the second capacitor 282, and the second inverter 602 are the second power system components of the second system control unit 202.
  • the first vehicle communication circuit 321, the first torque sensor input circuit 341, the first microcomputer 401, and the first rotation angle detection unit 251 are first control system components of the first system control unit 201.
  • the second vehicle communication circuit 322, the second torque sensor input circuit 342, the second microcomputer 402, and the second rotation angle detection unit 252 are second control system components of the second system control unit 202. As shown in FIG.
  • the mounting area Ap of the power system component is located closer to the connectors 351 and 352 than the mounting area Ac of the control system component. That is, the power system component is arranged closer to the connectors 351 and 352 in the board 230 than the control system component.
  • the first system connector 351 is arranged on one side with respect to the boundary surface B, and the second system connector 352 is arranged on the other side with respect to the boundary surface B.
  • the first power supply terminal 131 and the first signal terminal are arranged in this order from the boundary surface B on one side with respect to the boundary surface B.
  • the second power supply terminal 132 and the second signal terminal are arranged in order from the boundary surface B.
  • the connectors 351 and 352 have protrusions 391 and 392 that protrude in a direction orthogonal to the arrangement direction of the connectors 351 and 352. That is, the protrusions 391 and 392 do not protrude in the arrangement direction of the connectors 351 and 352 and are not formed in the gap between the connectors.
  • the opening shape of the connectors 351 and 352 is a rectangular shape.
  • the connectors 351 and 352 are composed of a pair of long sides and a pair of short sides.
  • the protrusions 391 and 392 are formed on the long side portion and are not formed on the short side portion.
  • the interval G is set to 4 times or less the height of the protrusions 391 and 392.
  • the external connectors 161 and 162 are fitted in the gaps between the connectors 351 and 352.
  • the external connectors 161 and 162 are provided with levers 181 and 182 that rotate around positions corresponding to the protrusions 391 and 392.
  • the external connectors 161 and 162 have cutout grooves 175 and 176 for avoiding interference with the protrusions 391 and 392 when inserted into the connectors 351 and 352.
  • the levers 181 and 182 are also provided with engaging grooves 185 and 186 for avoiding interference when inserted into the connectors 351 and 352.
  • the levers 181 and 182 When mounted on the vehicle, the operator pushes the levers 181 and 182, the external connectors 161 and 162 are inserted into the connectors 351 and 352, and fitted into the frontage. That is, as the levers 181 and 182 rotate from the state of FIG. 10 to the state of FIG. 12, the external connectors 161 and 162 move in the insertion direction. When the levers 181 and 182 are rotated to the state shown in FIG. 12, the engagement grooves 185 and 186 are positioned in a direction orthogonal to the insertion / removal direction to prevent the external connectors 161 and 162 from falling off.
  • the levers 181 and 182 In order to fix the levers 181 and 182 in the state shown in FIG.
  • the external connectors 161 and 162 may be provided with claw portions and the levers 181 and 182 may be provided with holes so as to be fitted together. Further, the engaging grooves 185 and 186 may be engaged with the protrusions 391 and 392 in the insertion / extraction direction when the levers 181 and 182 rotate from the state of FIG. 10 to the state of FIG.
  • the protrusions 391 and 392 are for locking the levers 181 and 182 of the external connectors 161 and 162, and may be for locking the levers 181 and 182.
  • the insertion / extraction direction of the first system connector 351 and the second system connector 352 is the same as the axial direction.
  • the first system connector 351 and the second system connector 352 are arranged so that the longitudinal direction of the front ends of the connectors is aligned in a straight line, and the distance G between the connectors is smaller than the width W in the short direction of both connectors.
  • the connectors 351 and 352 have protrusions 391 and 392 that protrude in a direction orthogonal to the arrangement direction of the connectors 351 and 352.
  • the protrusions 391 and 392 do not protrude in the direction in which the connectors 351 and 352 are arranged, and are not formed in the gap between the connectors. Thereby, since the protrusions 391 and 392 are separated from each other, the connectors 351 and 352 can be brought close to each other. Therefore, the connector installation space is reduced, and the size of the drive device 1 can be reduced. Further, since the protrusions 391 and 392 are separated from each other, there is a margin in the work space when the external connectors 161 and 162 are connected to the connectors 351 and 352, that is, the space for operating the levers 181 and 182 of the external connectors 161 and 162, respectively. Is born, and assembly is improved.
  • the first system connector 351 and the second system connector 352 are arranged so that the longitudinal directions of the front ends of the connectors are aligned. As a result, the connectors 351 and 352 can be disposed in a space-saving manner using the outer space of the motor 80.
  • the first power supply terminal 131 is disposed closer to the second system connector 352 in the opening of the first system connector 351 than the first signal terminal.
  • the second power supply terminal 132 is disposed closer to the first system connector 351 in the gap between the second system connectors 352 than the second signal terminal.
  • the first power supply terminal 131 and the second power supply terminal 132 are arranged close to the center of the connector arrangement space, so that it is easy to avoid the intersection of the power supply line and the signal line.
  • an increase in the loop area of the power supply line can be suppressed. Therefore, the influence of noise on the signal line can be reduced. There is a concern that noise will also occur when an abnormality occurs in one system and the motor control is continued only in the other system, which is normal. The noise influence can be reduced by being arranged close to the center.
  • the first system terminals (the first power supply terminal 131, the first vehicle communication terminal 321 and the first torque signal terminal 331) and the first interface are defined with the boundary surface B located between the connectors 351 and 352 as a boundary.
  • Two system terminals (second power supply terminal 132, second vehicle communication terminal 322 and second torque signal terminal 332) are mirror-arranged so that power supply terminals 131 and 132 are located in the center. Thereby, the 1st power supply terminal 131 and the 2nd power supply terminal 132 can be arranged near the center of a connector arrangement space.
  • the first system control unit 201 and the second system control unit 202 are mounted on one substrate 230.
  • the first system control unit 201 and the second system control unit 202 are separated at the boundary surface B. Accordingly, the first system terminal and the first system control unit 201 on the substrate 230 are connected so that the power supply line and the signal line do not cross each other, and the second system terminal and the second system control unit on the substrate 230 are connected.
  • 202 can be connected.
  • the power system components of the control units 201 and 202 are arranged closer to the connectors 351 and 352 on the board 230 than the control system components of the control units 201 and 202. This shortens the board wiring path of the power supply line through which a relatively large current flows, thereby reducing the loop area of the power supply line, reducing the influence of noise on the signal line, and generating heat (ie, current loss). Can be reduced.
  • the first power supply terminal 131 and the first signal terminal are arranged in order from the boundary surface B on one side with respect to the boundary surface B.
  • the second power supply terminal 132 and the second signal terminal are arranged in order from the boundary surface B. Accordingly, the first system terminal and the first system control unit 201 on the substrate 230 are connected so that the power supply line and the signal line do not cross each other, and the second system terminal and the second system control unit on the substrate 230 are connected. 202 can be connected.
  • a space for switching the first lever 181 between the locked state and the non-locked state on the opposite side of the first system connector 351 from the second system connector 352. S1 is provided.
  • a space S2 for switching the lever 182 between the locked state and the unlocked state is provided. Therefore, a work area for attaching and detaching the external connectors 161 and 162 is secured, and workability is improved. In addition, the overall size of the external connectors 161 and 162 can be reduced.
  • a rib 390 that connects the connectors 351 and 352 is formed between the first connector 351 and the second connector 352.
  • the connectors 361 and 362 of the connector portion 36 protrude in the axial direction from the base portion 360 through the opening portion 221 of the bottom portion 220 of the cover 22.
  • the insertion / extraction direction of the connectors 361 and 362 and the direction of the frontage are axial directions.
  • the cover 22 is fixed to the connectors 361 and 362 with screws 155.
  • the connectors 361 and 362 are fixed to the rear frame end 837 with screws 156.
  • the connectors 361 and 362 are arranged so that the widthwise direction of the front ends of the connectors is aligned on a straight line. As a result, the connectors 361 and 362 can be disposed in a space-saving manner using the axially outer space outside the cover 22.
  • the connectors 361 and 362 have protrusions 391 and 392 that protrude in a direction orthogonal to the direction in which the connectors 361 and 362 are arranged. Further, convex portions 395 and 396 extending in the insertion / extraction direction are formed on the side of the first system connector 361 opposite to the second system connector 362. Similarly, protrusions 395 and 396 are formed on the second system connector 361.
  • the external connectors 161 and 162 have guide portions 177 and 178 for avoiding interference with the convex portions 395 and 396 when inserted into the connectors 361 and 362, respectively.
  • the levers 181 and 182 rotate from the state shown in FIG. 18 to the state shown in FIG. 20, the engaging grooves 185 and 186 are engaged with the protrusions 391 and 392 in the insertion / removal direction.
  • the second embodiment has the same configuration as the first embodiment, and has the same effects as the first embodiment.
  • the first system connector 371 of the connector portion 37 is formed with only the convex portion 395 and is not formed with the convex portion 396.
  • the convex part 395 is not formed on the second system connector 372, and only the convex part 396 is formed. Therefore, the frontage shape of the first system connector 371 is different from the frontage shape of the second system connector 372. That is, even if the first system connector 371 is rotated by 180 °, it does not coincide with the second system connector 372. Therefore, an error in assembling the external connector 161 to the second system connector 372 and an error in assembling the external connector 162 to the first system connector 371 can be prevented.
  • the third embodiment has the same configuration as that of the second embodiment, and has the same effects as those of the second embodiment.
  • power may be supplied to each system by branching from one common power source. Still, it is only necessary that a power supply terminal is provided for each system, and these power supply terminals are arranged separately for each system connector. When the power supply is common, noise effects are likely to occur compared to the case where the power supply is provided for each system, but as with the first embodiment, the power supply terminal is arranged close to the center of the connector arrangement space. , Noise effects can be reduced.
  • the position between the first system connector and the second system connector may deviate from the boundary position between the first system control unit and the second system control unit.
  • the base part of the connector part and the connector are formed of members different from the cover.
  • a base part, a connector, and a cover may be comprised from the same member.
  • the terminal of the connector unit is connected to the control unit board by, for example, press fitting, or the control unit board is fixed to the connector unit, and the lead wire of the winding set is connected to the control unit. For example, press-fit.
  • the motor may have two winding sets arranged in the same phase. Further, the number of phases of the motor is not limited to three phases and may be four or more phases. Furthermore, the motor to be driven is not limited to an AC brushless motor, and may be a brushed DC motor. In that case, an H-bridge circuit may be used as the “power converter”. In other embodiments, the drive device is not limited to the electric power steering device, and may be applied to any other application.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Motor Or Generator Frames (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
PCT/JP2019/015283 2018-04-10 2019-04-08 駆動装置および駆動ユニット Ceased WO2019198658A1 (ja)

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US11888345B2 (en) 2024-01-30
JP2019187080A (ja) 2019-10-24
US20210013770A1 (en) 2021-01-14
CN111937279B (zh) 2023-05-26
JP6907992B2 (ja) 2021-07-21

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