WO2022196458A1 - Dispositif d'entraînement - Google Patents

Dispositif d'entraînement Download PDF

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Publication number
WO2022196458A1
WO2022196458A1 PCT/JP2022/010108 JP2022010108W WO2022196458A1 WO 2022196458 A1 WO2022196458 A1 WO 2022196458A1 JP 2022010108 W JP2022010108 W JP 2022010108W WO 2022196458 A1 WO2022196458 A1 WO 2022196458A1
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WO
WIPO (PCT)
Prior art keywords
motor
power
board
area
control
Prior art date
Application number
PCT/JP2022/010108
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English (en)
Japanese (ja)
Inventor
邦彦 松田
Original Assignee
株式会社デンソー
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Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2022196458A1 publication Critical patent/WO2022196458A1/fr

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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
    • 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
    • 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

Definitions

  • the present disclosure relates to a driving device.
  • Patent Document 1 one microcomputer controls the driving of the motor.
  • the mounting area of the board may be insufficient.
  • An object of the present disclosure is to provide a driving device capable of securing a mounting area for a substrate.
  • the drive device of the present disclosure includes a motor and a control unit.
  • the motor has a first motor winding and a second motor winding.
  • the control unit has a connector unit having a connector used for connection with the outside, a main board fixed to the motor housing, a sub-board fixed to the connector unit, and a connection part connecting the main board and the sub-board. and is provided on one side of the motor in the axial direction.
  • the main board and the sub-board have a first system area where electronic components related to energization control of the first motor windings are mounted, and a second system area where electronic components related to energization control of the second motor windings are mounted. are separated at the substrate centerline.
  • the main board and the sub-board have a power area in which a motor current flows, and an area in which a control current relatively smaller than the motor current flows. The control area is separated. Thereby, the mounting area of the board can be secured.
  • FIG. 1 is a schematic configuration diagram showing a steering system according to one embodiment
  • FIG. 2 is a side view showing a drive device according to one embodiment
  • 3 is a view in the direction of arrow III in FIG. 2
  • FIG. 4 is a cross-sectional view taken along line IV-IV of FIG.
  • FIG. 5 is a side view showing the ECU with the cover removed according to one embodiment
  • FIG. 6 is a perspective view showing the driving device with the cover removed according to one embodiment
  • FIG. 7 is a circuit diagram showing a driving device according to one embodiment
  • FIG. 8 is a plan view showing the motor surface of the mother board according to one embodiment
  • FIG. 9 is a plan view showing the connector surface of the mother board according to one embodiment
  • FIG. 10 is a plan view showing the motor surface of the child board according to one embodiment
  • FIG. 11 is a plan view showing the connector side of the daughter board according to one embodiment.
  • FIGS. 1-11 A driving device according to the present disclosure will be described below with reference to the drawings.
  • a drive device according to one embodiment is shown in FIGS. 1-11.
  • the driving device 1 includes a motor 80 and an ECU 10, and is applied to an electric power steering device 8 as a steering device for assisting steering operation of a vehicle.
  • FIG. 1 shows the overall configuration of a steering system 90 including an electric power steering device 8.
  • the steering system 90 includes a steering wheel 91 that is a steering member, a steering shaft 92, a pinion gear 96, a rack shaft 97, wheels 98, an electric power steering device 8, and the like.
  • a steering wheel 91 is connected to a steering shaft 92 .
  • the steering shaft 92 is provided with a torque sensor 94 that detects steering torque.
  • the torque sensor 94 is internally divided into two systems, and the detected values trq1 and trq2 are input to the corresponding connectors 156 and 256, respectively.
  • a pinion gear 96 is provided at the tip of the steering shaft 92 .
  • the pinion gear 96 meshes with the rack shaft 97 .
  • a pair of wheels 98 are connected to both ends of the rack shaft 97 via tie rods or the like.
  • the electric power steering device 8 includes the driving device 1 and a speed reduction gear 89 as a power transmission unit that reduces the speed of rotation of the motor 80 and transmits it to the rack shaft 97 .
  • the electric power steering device 8 of the present embodiment is a so-called "rack assist type", but it may be a so-called “column assist type” that transmits the rotation of the motor 80 to the steering shaft 92, or the like.
  • the motor 80 is a three-phase brushless motor.
  • the motor 80 outputs part or all of the torque required for steering, and is driven by being supplied with power from a battery (not shown) to rotate the reduction gear 89 forward and backward.
  • the motor 80 has a first motor winding 180 and a second motor winding 280.
  • the motor windings 180 and 280 have the same electrical characteristics, and are cancel-wound around a common stator 860 with an electrical angle of 30 [deg] shifted from each other. Accordingly, the motor windings 180 and 280 are controlled so that phase currents with phases ⁇ shifted by 30 [deg] are applied. By optimizing the energization phase difference, the output torque is improved. Also, the sixth-order torque ripple can be reduced, and noise and vibration can be reduced. In addition, since heat generation is distributed and leveled by distributing the current, it is possible to reduce errors between systems that depend on temperature, such as the detection value and torque of each sensor, and increase the amount of current that can be passed. can. Note that the motor windings 180 and 280 may not be cancel-wound and may have different electrical characteristics.
  • first system a combination of configurations related to energization control of the first motor winding 180
  • second system a combination of configurations related to energization control of the second motor winding 280
  • the configuration of the first system is mainly numbered in the 100s
  • the configuration of the second system L2 is mainly numbered in the 200s. Numbers are assigned so that the digits are the same, and explanations are omitted as appropriate.
  • the subscript "1" is added to the configuration related to the first system L1
  • subscript "2" is added to the configuration related to the second system L2.
  • the drive device 1 is integrally provided with the ECU 10 on one side of the motor 80 in the axial direction, and is a so-called "machine-electric integrated type".
  • the ECU 10 is arranged coaxially with the axis Ax of the shaft 870 on the side opposite to the output shaft of the motor 80 .
  • coaxial means that errors and deviations related to assembly and design are allowed, for example.
  • the "mechanical and electrical integration" in the drive device 1 of the present embodiment is different from the motor 80 in which, for example, an approximately rectangular parallelepiped ECU is simply provided close to the motor 80 .
  • the ECU 10 and the motor 80 can be efficiently arranged in a vehicle with limited installation space.
  • the axial direction of the motor 80 will be regarded as the axial direction of the driving device 1, and will simply be referred to as the "axial direction”.
  • the motor 80 has a motor case 830, a motor frame 840, a stator 860, a rotor 865, and the like.
  • the stator 860 is fixed to the motor case 830 and has the motor windings 180, 280 wound thereon.
  • the rotor 865 is provided radially inside the stator 860 and is provided rotatably relative to the stator 860 .
  • the shaft 870 is fitted into the rotor 865 and rotates together with the rotor 865 .
  • Shaft 870 is rotatably supported by motor case 830 and motor frame 840 by bearings 871 and 872 .
  • An end portion of the shaft 870 on the side of the ECU 10 is inserted through a shaft hole 849 formed in the motor frame 840 and exposed to the side of the ECU 10 .
  • a magnet 875 is provided at the end of the shaft 870 on the side of the ECU 10 .
  • the motor case 830 is formed in a substantially bottomed tubular shape consisting of a bottom portion 831 and a tubular portion 832, and the ECU 10 is provided on the opening side.
  • a bearing 871 is provided on the bottom portion 831 .
  • a stator 860 is fixed to the cylindrical portion 832 .
  • the motor frame 840 has a frame portion 841, a heat sink 845, a connector connection portion 846, etc., and is made of a material with good thermal conductivity such as aluminum.
  • the frame portion 841 is press-fitted radially inward of the motor case 830, and as a whole is within a projected area (hereinafter referred to as “motor silhouette” as appropriate) obtained by projecting the cylindrical portion 832 of the motor case 830 in the axial direction. It's settled.
  • a flange portion 842 is formed on the outer circumference of the frame portion 841 and contacts a stepped portion 833 formed on the inner wall of the cylindrical portion 832 .
  • An extension member connection portion 843 is formed outside the heat sink 845 of the frame portion 841 .
  • the heat sink 845 is erected on the ECU 10 side of the frame portion 841 .
  • one ends of the motor windings 180 and 280 are taken out to the ECU 10 side from motor wire take-out holes formed in the frame portion 841 .
  • An insulating member is provided in the motor wire extraction hole of the frame portion 841, and recesses are formed in the side surfaces of the heat sink 845 at locations where the motor windings 180 and 280 are extracted, so that the heat sink 845 is insulated from the motor frame 840.
  • the motor windings 180 and 280 are taken out to the ECU 10 side.
  • Motor windings 180 and 280 taken out from motor frame 840 are connected to main board 31 .
  • the connector connecting portion 846 is erected substantially in the center of the side surface of the heat sink 845 from which the motor windings 180 and 280 are not taken out.
  • the height of the connector connection portion 846 is higher than the heat sink 845 .
  • the ECU 10 has a parent board 31, a child board 32, power connection parts 141, 241, signal connection parts 146, 246, a connector unit 50, a cover 60, and the like.
  • the mother board 31 is fixed by screws 319 to a board fixing portion 847 formed on the end surface of the heat sink 845 .
  • the child board 32 is fixed to the connector unit 50 .
  • the mother board 31 is formed with relief recesses 316 for avoiding interference with the connector connecting portion 846.
  • FIG. The sub-board 32 is formed with a relief recess 326 for avoiding interference with a fixing portion 516 of the connector unit 50, which will be described later.
  • the substrates 31 and 32 are hollowed out to form relief recesses 316 and 326 to directly connect the connector unit 50 to the motor frame 840 .
  • the parent board 31 and the child board 32 are connected by power system connection parts 141 and 241 and signal system connection parts 146 and 246 . Details of components mounted on the parent substrate 31 and the child substrate 32 will be described later.
  • the first power connection component 141 has power terminals 142 , terminal holding portions 143 and pins 144 .
  • the power terminal 142 is held by the terminal holding portion 143 and has one end connected to the main board 31 and the other end connected to the child board 32 .
  • the pins 144 are provided on both sides of the terminal holding portion 143 so as to protrude toward the mother board 31 , and are fixed to the mother board 31 to position the power connection component 141 .
  • the second power connection component 241 has power terminals 242 , terminal holding portions 243 and pins 244 .
  • the power connection components 141 and 241 are arranged on both sides of the relief recesses 316 and 326 along the same side in the outer area outside the area where various elements such as switching elements are mounted.
  • the first signal system connection component 146 has a plurality of signal terminals 147 , terminal holding portions 148 and pins 149 .
  • the signal terminal 147 is held by the terminal holding portion 148 and has one end connected to the main board 31 and the other end connected to the child board 32 .
  • Pins 149 are provided at both ends of terminal holding portion 148 so as to protrude toward mother board 31 , and are fixed to mother board 31 to position signal system connection component 146 .
  • the second signal system connection component 246 has a plurality of signal terminals 247 , terminal holding portions 248 and pins 249 .
  • Signal terminals 147 and 247 are used for signal transmission with torque sensor 93 and vehicle communication network 99 .
  • the number of terminals can be arbitrarily set according to the number of signals and the like.
  • the signal system connection components 146 and 246 are arranged along the side opposite to the power system connection components 141 and 241 in the outer area outside the area where various elements are mounted, with relief recesses 316 and 326 interposed therebetween. are placed on both sides.
  • the connector unit 50 has a base portion 51, vehicle system connectors 152, 252, and steering system connectors 156, 256.
  • the base portion 51 is formed in a substantially rectangular shape in plan view.
  • a groove portion 511 is formed along the outer edge of the surface of the base portion 51 opposite to the motor 80 .
  • a fixing portion 516 is formed on the base portion 51 .
  • a through bolt 519 is inserted through the fixing portion 516 and screwed to the connector connection portion 846 of the motor frame 840 .
  • the connector unit 50 is thereby fixed to the motor frame 840 .
  • the connection position in the axial direction between the connector connection portion 846 of the motor frame 840 and the fixing portion 516 of the connector unit 50 is between the main board 31 and the child board 32 .
  • the connectors 152, 156, 252, 256 are formed with their frontage facing outward in the axial direction.
  • the vehicle system connectors 152 and 252 are integrated hybrid connectors in which a power connector connected to the vehicle power supply and ground and a communication connector connected to the vehicle communication network 99 such as CAN (Controller Area Network) are integrated. is.
  • the steering system connectors 156, 256 are connected to the torque sensor 93 (see FIG. 1).
  • power system connection parts 141, 241, vehicle system connectors 152, 252, steering system connectors 156, 256, and signal system connection parts 146, 246 are arranged in this order from one side. It is
  • the cover 60 is formed in a substantially cylindrical shape with a bottom, and accommodates the substrates 31 and 32, the heat sink 845 and the like inside.
  • a substantially rectangular hole 61 is formed in the bottom of the cover 60 .
  • Connectors 152 , 156 , 252 , 256 are inserted through the holes 61 .
  • the end portion 611 of the hole portion 61 is bent inward.
  • the end portion 611 is inserted into the groove portion 511 of the connector unit 50 coated with an adhesive member such as an adhesive. This prevents water droplets and dust from entering between the connector unit 50 and the cover 60 .
  • the extension member 70 having four corners protruding from the motor silhouette is provided so that the area outside the motor silhouette can be used.
  • the expansion member 70 has a base portion 71, an annular convex portion 72, a cover insertion groove 73, a fixing portion 74, etc., and is integrally formed of resin or the like.
  • the extension member 70 is formed in an annular shape as a whole, and is arranged on the ECU 10 side of the frame portion 841 of the motor frame 840 and radially outside the heat sink 845 . In other words, the heat sink 845 protrudes toward the ECU 10 on the inner peripheral side of the extension member 70 . At least part of the outer edge of the extension member 70 is located outside the motor silhouette. Since the substrates 31 and 32 and the connector unit 50 can be extended to the outside of the motor silhouette according to the shape of the extension member 70, the mounting area and frontage area of the substrate can be expanded.
  • the annular convex portion 72 is provided on the motor 80 side surface of the base portion 71 so as to protrude along the inner peripheral surface, and is inserted into the cylindrical portion 832 of the motor case 830 .
  • a cover insertion groove 73 is formed along the outer edge of the surface of the expansion member 70 opposite to the motor 80 .
  • the opening-side end of the cover 60 is inserted into a cover insertion groove 73 coated with an adhesive member such as an adhesive.
  • the fixing portion 74 is formed to protrude radially inward from the inner peripheral wall of the expansion member 70 .
  • a collar is inserted into the fixed portion 74 and fixed to the frame portion 841 with a screw 79 .
  • FIG. 7 shows the circuit configuration of the electronic components mounted on the substrates 31 and 32.
  • FIG. 7 the circuit configuration of the first system L1 and the circuit configuration of the second system L2 are the same, so the first system L1 will be described, and the description of the second system L2 will be omitted.
  • the inverter circuit 120 is a three-phase inverter in which switching elements 121 to 126 are bridge-connected.
  • the switching elements 121-123 are connected to the high potential side, and the switching elements 124-126 are connected to the low potential side.
  • the high potential side of the inverter circuit 120 is connected to the power supply terminal PIG via the power wiring Lp, and the low potential side is connected to the ground terminal GND via the ground wiring Lg.
  • a connection point between the paired U-phase switching elements 121 and 124 is connected to one end of the U-phase coil via a motor relay element 127 .
  • the connection point of the paired V-phase switching elements 122 and 125 is connected to one end of the V-phase coil via a motor relay element 128, and the paired W-phase switching elements 123 and 126 are connected to a motor relay element 129. is connected to one end of the W-phase coil via .
  • the other ends of the U-phase, V-phase, and W-phase coils forming the motor winding 180 are connected.
  • Capacitor 135 is an aluminum electrolytic capacitor and is connected in parallel with inverter circuit 120 . Capacitor 135 assists power supply to inverter circuit 120 by storing electric charge.
  • Power is supplied to the inverter circuit 120 via the power relay elements 111 and 112 .
  • the switching elements 121-126, the motor relay elements 127-129, and the power relay elements 111 and 112 are all MOSFETs, but they may be IGBTs, thyristors, or the like.
  • the power relay elements 111 and 112 are connected in series so that the directions of the parasitic diodes are opposite to each other. This prevents the current from flowing in the opposite direction when the battery is erroneously connected in the opposite direction, thereby protecting the ECU 10 .
  • a capacitor 113 and a choke coil 114 forming a filter circuit are provided between the power relay element 111 and the power terminal PIG.
  • the microcomputer 170 controls the on/off operations of the switching elements 121-126, the motor relay elements 127-129, and the power relay elements 111 and 112.
  • the microcomputer 170 is grounded via bypass capacitors 172 and 173 for stabilization.
  • the microcomputer 170 is connected via a torque filter circuit 177 to a torque connector terminal TRQ connected to the torque sensor 93 .
  • the microcomputer 170 is connected to the CANH terminal and the CANL terminal via the CAN driver 178 .
  • the CAN driver 178 is connected between the diode 115 and the switch power supply element 116 via the CAN IC 117 .
  • the CAN IC 117 is provided in the integrated circuit section 175 in this embodiment, it may be provided separately from the integrated circuit section 175 .
  • the integrated circuit section 175 (described as "ASIC" in the drawing) has a predriver, a signal amplifier, a regulator, and the like.
  • the integrated circuit section 175 is connected to the power wiring Lp between the filter circuit and the power relay element 111 via the negative surge protection diode 115 and the switching power supply element 116 .
  • the switching power supply element 116 includes parts that constitute a booster circuit, a voltage-down circuit, and the like.
  • the components in range X are mounted on the parent board 31 and the components in range Y are mounted on the child board 32 .
  • the components in range Z may be mounted on either substrate 31 or 32 .
  • FIG. 8 to 11 show the arrangement of elements on the substrates 31 and 32.
  • FIG. 8 to 11 all show the arrangement when viewed from the connector unit 50 side for the sake of explanation.
  • FIG. 8 shows a motor surface 311, which is the surface of the mother substrate 31 on the motor 80 side
  • FIG. 9 shows the connector surface 312, which is the surface of the mother substrate 31 on the connector unit 50 side
  • 10 shows a motor surface 321, which is the surface of the child board 32 on the motor 80 side
  • FIG. 11 shows the connector surface 322, which is the surface of the child board 32 on the connector unit 50 side.
  • the components related to the first system L1 are mounted on the left side of the paper surface, and the components related to the second system L2 are mounted on the right side of the paper surface.
  • the first system region RL1 and the second system region RL2 are separated by the substrate center line C.
  • Control regions Rc1 and Rc2 are regions connected to the signal system connection components 146 and 246, power regions Rp1 and Rp2 are regions connected to the power system connection components 141 and 241, and two-dot chain lines indicated by 10 and 11, frontage projected areas of connectors 152, 156, 252, 256 are indicated by thick dashed lines.
  • Power relay elements 111 and 112 switching elements 121 to 126, motor relay elements 127 to 129, shunt resistors 131 to 133, and the like are mounted in the power area Rp1 of the motor surface 311.
  • the power relay elements 111 and 112 are mounted on the power system connection component 141 side of the power region Rp1 and on the substrate center line C side.
  • the elements of each phase are arranged in the order from the substrate center line C side: switching elements 121 to 123 on the high potential side, switching elements 124 to 126 on the low potential side, and motor relay elements 127 to 129.
  • the motor relay elements 127 to 129 are arranged adjacent to the locations where the motor windings 180 are connected. Here, a state in which no other element is arranged between them is defined as "adjacent".
  • Power relay elements 211 and 212, switching elements 221 to 226, motor relay elements 227 to 229, shunt resistors 231 to 233, and the like are mounted in the power area Rp2 of the motor surface 311.
  • the power relay elements 211 and 212 are mounted on the power system connection component 241 side of the power region Rp2 and on the substrate center line C side.
  • the elements of each phase are arranged in this order from the substrate center line C side: switching elements 221 to 223 on the high potential side, switching elements 224 to 226 on the low potential side, and motor relay elements 227 to 229. It is Also, the motor relay elements 227 to 229 are arranged adjacent to the locations where the motor windings 280 are connected.
  • the element array of each phase does not have to be arranged horizontally, and the position in the vertical direction of the paper surface may be shifted according to the wiring pattern and the arrangement of other parts.
  • the shunt resistors 131 to 133 and 231 to 233 are arranged adjacent to the switching elements 124 to 126 and 224 to 226 on the low potential side of the corresponding phases.
  • the diodes 115, 215 and the capacitors 135, 235 are mounted in the power areas Rp1, Rp2, and the switching power supply elements 116, 216, the microcomputers 170, 270, the diodes constituting the torque filter circuit 177, etc. are in the control area. It is mounted on Rc1 and Rc2.
  • the bypass capacitors 172, 173, 272, and 273 are arranged on the power region Rp side and the substrate center line C side of the integrated circuit section 175.
  • the microcomputers 170 and 270 are mounted on the power region Rp side of at least some of the switching power source elements 116 and 216 and on the substrate center line C side of the torque filter circuits 177 and 277. ing.
  • bypass capacitors 172 and 173 for the microcomputer are mounted on the back side of the microcomputer 170 .
  • a bypass capacitor 172 is a capacitor for stabilizing the core power supply
  • a bypass capacitor 173 is a capacitor for stabilizing the power supply related to a power supply having a voltage different from that of the core power supply.
  • the microcomputer 170 of this embodiment has terminals formed on the rear surface of the package, and is mounted on the main substrate 31 by a ball grid array (BGA).
  • BGA ball grid array
  • a capacitor 113, a choke coil 114, a torque filter circuit 177, a CAN driver 178, peripheral elements 179, and the like are mounted on the first system region RL1 of the motor surface 321 of the daughter board 32.
  • a capacitor 213, a choke coil 214, a torque filter circuit 277, a CAN driver 278, peripheral elements 279, and the like are mounted on the second system region RL2 of the motor surface 321 of the daughter board 32.
  • Peripheral elements 179 and 279 include capacitors and the like for removing noise.
  • the first system region RL1 and the second system region RL2 are divided by the substrate center line C in the parent substrate 31 and the child substrate 32, and are substantially line symmetrical with respect to the substrate center line C. parts are placed in In the connector unit 50, the frontages of the connectors 152 and 156 associated with the first system L1 and the connectors 252 and 262 associated with the second system L2 are symmetrically arranged with respect to the substrate center line C when projected in the axial direction. It is The concept of "line symmetry" includes not only strict line symmetry, but also the case where the element positions are shifted as necessary, for example, for the convenience of avoiding interference with wiring patterns or other members.
  • the first system region RL1 and the second system region RL2 are both power regions Rp1 and PR2 in which relatively large motor currents to be applied to the motor 80 are applied, and power regions Rp1 and PR2 to which the motor currents are applied.
  • the control regions Rc1 and Rc2 are separated from each other through which a control current relatively smaller than the motor current is applied.
  • the power regions Rp1 and Rp2 and the control regions Rc1 and Rc2 are separated from each other in the first system region RL1 and the second system region RL2.
  • the power regions Rp1 and Rp2 are approximately line-symmetrical with respect to the center line C of the substrate.
  • the control regions Rc1, Rc2 are substantially line-symmetrical with respect to the center line C of the substrate.
  • the power regions Rp1 and Rp2 are regions extending toward the power connection components 141 and 241, and the control regions Rc1 and Rc2 are regions extending toward the signal connection components 146 and 246.
  • the wiring patterns to which the power terminals 153, 253 constituting the power connectors are connected are included in the power regions Rp1, Rp2 and are connected to the power system connection parts 141, 241, respectively.
  • the wiring patterns to which the communication signal terminals 154, 254 constituting the communication connectors are connected are included in the control regions Rc1, Rc2 and connected to the signal system connection parts 146, 246.
  • Wiring patterns connected to the signal terminals 157 and 257 in the steering system connectors 156 and 256 are included in the control regions Rc1 and Rc2 and connected to the signal system connection parts 146 and 246, respectively.
  • the vehicle system connectors 152 and 252 are hybrid connectors in which the power connector and the communication connector are integrated in the frontage. It is The steering system connectors 156 and 256 have separate openings from the communication connectors, but common signal system connecting parts 146 and 246 are used for connection between the substrates 31 and 32 .
  • the CAN drivers 178, 278 and CAN driver peripheral elements 179, 279 are arranged as close as possible to the communication signal terminals 154, 254 and along the communication signal terminals 154, 254. In other words, no other electronic components are mounted between the communication signal terminals 154, 254 and the CAN drivers 178, 278 and CAN driver peripheral elements 179, 279. As a result, the influence of noise and the like can be reduced, and appropriate communication can be performed.
  • the driving device 1 of the present embodiment includes the motor 80 and the ECU 10.
  • Motor 80 has a first motor winding 180 and a second motor winding 280 .
  • the ECU 10 has a connector unit 50, a parent board 31, a child board 32, and connecting parts 141, 146, 241, 246, and is provided on one side of the motor 80 in the axial direction.
  • the connector unit 50 has connectors 152, 156, 252, 256 used for connection with the outside.
  • the mother board 31 is fixed to the motor frame 40 .
  • the child board 32 is fixed to the connector unit 50 .
  • the connection parts 141 , 146 , 241 , 246 connect the parent board 31 and the child board 32 .
  • the main board 31 and the child board 32 are mounted with a first system region RL1 in which electronic components related to energization control of the first motor winding 180 are mounted, and electronic components related to energization control of the second motor winding 280 are mounted.
  • the second system region RL2 is separated by the substrate center line C. Further, in the first system region RL1 and the second system region RL2, the power regions Rp1 and Rp2 in which the motor current energized to the motor 80 flows, and the control regions in which the control current relatively smaller than the motor current flows. Regions Rc1 and Rp2 are separated.
  • the power regions Rp1, Rp2 and the control regions Rc1, Rc2 do not need to be separated linearly.
  • the area may be separated by setting the control area Rc as an area where the control components are collectively mounted at a location different from the power area Rp.
  • the power regions Rp1 and Rp2 may be collectively regarded as the power region Rp
  • the control regions Rc1 and Rc2 may be collectively regarded as the control region Rc.
  • the mounting area can be secured. Further, by dividing the first system region RL1 and the second system region RL2 and dividing the power region Rp and the control region Rc in each of the parent substrate 31 and the child substrate 32, it is possible to appropriately arrange the components. can. Also, by arranging each element so that the wiring length is as short as possible, it is possible to make it difficult for the voltage drop to occur and to secure the noise immunity.
  • the connectors include a power connector connected to the power supply, a communication connector connected to the vehicle communication network 99, and steering system connectors 156, 256 connected to the torque sensor 93.
  • the vehicle system connectors 152 and 252 are integrated with the power connector and the communication connector.
  • CAN drivers 178 and 278, which are communication elements related to communication, are mounted on the sub-board 32 adjacent to communication signal terminals 154 and 254 forming a communication connector. Thereby, it is possible to appropriately communicate with the vehicle communication network 99 . This is particularly effective when the vehicle communication network 99 is CAN.
  • the connection components include a first power system connection component 141, a second power system connection component 241, a first signal system connection component 146, and a second signal system connection component 246.
  • the first power connection component 141 connects the power region Rp1 of the parent board 31 and the power region Rp1 of the child board 32 in the first system region RL1.
  • the second power connection component 241 connects the power region Rp2 of the parent board 31 and the power region Rp2 of the child board 32 in the second system region RL2.
  • the first signal system connection component 146 connects the control region Rc1 of the parent board 31 and the control region Rc1 of the child board 32 in the first system region RL1.
  • the second signal system connection component 246 connects the control region Rc2 of the parent board 31 and the control region Rc2 of the child board 32 in the second system region RL2.
  • the first power system connection component 141 and the second power system connection component 241 are provided line-symmetrically with respect to the center line C of the substrate.
  • the first signal system connection component 146 and the second signal system connection component 246 are provided line-symmetrically with respect to the center line C of the board. Thereby, the power regions Rp and the control regions Rc of the substrates 31 and 32 can be appropriately connected.
  • Microcomputers 170 and 270 are mounted in the control regions Rc1 and Rc2 on one surface of the mother board 31 (the connector surface 312 in this embodiment). Further, bypass capacitors 172, 173, 272, and 273 are mounted on the back side of the microcomputers 170 and 270 in the control regions Rc1 and Rc2 on the other surface (the motor surface 311 in this embodiment) of the mother board 31. . In this embodiment, space is secured behind the microcomputers 170 and 270 by displacing the microcomputers 170 and 270 and the integrated circuit sections 175 and 275 .
  • microcomputers 170 and 270 of this embodiment are mounted on the mother substrate 31 by a ball grid array, and by mounting bypass capacitors 172, 173, 272 and 273 for noise elimination on the back surface, the wiring length can be shortened as much as possible. can do. Thereby, the noise tolerance can be ensured.
  • the ECU 10 is the "control unit”
  • the motor frame 840 is the “motor housing”
  • the power system connection parts 141, 241 and the signal system connection parts 146, 246 are the “connection parts”
  • the vehicle system connectors 152, 252 are the “power unit”.
  • connector” and “communication connector” torque sensor 93 is “sensor”
  • steering system connectors 156 and 256 are “sensor connector”
  • vehicle communication network 99 is “communication network”
  • CAN drivers 178 and 278 are “communication elements”
  • microcomputer 170 and 270 correspond to “control circuit components”
  • bypass capacitors 172, 173, 272 and 273 correspond to “capacitors”.
  • the parent board 31 corresponds to the "main board”
  • the child board 32 corresponds to the "sub-board”.
  • the two substrates are referred to as “main” and “sub” for the sake of convenience, but the relationship between the two substrates does not necessarily have to be “main” and "sub”.
  • the power connector connected to the vehicle power supply and ground and the communication connector connected to the vehicle communication network are integrated.
  • the power connector and communication connector may be separate.
  • the type and number of connectors can be set arbitrarily, and the frontages may be provided separately, or may be provided in an arbitrary combination.
  • the connector frontage is provided separately for each system. In another embodiment, one frontage may be shared by two systems without dividing the connector frontage by system.
  • the extension member is provided so that the control unit extends to the outside of the motor silhouette.
  • the extension member may be omitted and the control unit may be housed in the motor silhouette.
  • the steering device is an electric power steering device.
  • the steering device may be a steer-by-wire device
  • the drive device may be used as a steering device for steering the wheels or as a reaction force device for applying a reaction force to the steering wheel.
  • the driving device may be applied to devices other than the steering device.
  • the present disclosure is by no means limited to the above embodiments, and can be implemented in various forms without departing from the scope of the present disclosure.

Landscapes

  • 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)

Abstract

La présente divulgation concerne un dispositif d'entraînement (1) comprenant : un moteur (80) ayant un premier enroulement de moteur (180) et un deuxième enroulement de moteur (280) ; et une unité de commande (10). L'unité de commande (10) comprend une unité de connecteur (50), une carte principale (31), une sous-carte (32) et des composants de connexion (141, 146, 241, 246) et est disposée sur un côté du moteur (80) dans la direction axiale. La carte principale (31) et la sous-carte (32) ont chacune une première région de ligne et une deuxième région de ligne séparées par la ligne centrale de carte. Dans la première région de ligne, des composants électroniques se rapportant à la commande d'excitation du premier enroulement de moteur (180) sont montés, et dans la deuxième région de ligne, des composants électroniques se rapportant à la commande d'excitation du deuxième enroulement de moteur (280) sont montés. La première région de ligne et la deuxième région de ligne sont chacune séparées dans une région de puissance dans laquelle un courant de moteur à fournir au moteur (80) est amené à circuler et une région de commande dans laquelle un courant de commande relativement plus petit que le courant de moteur est amené à circuler.
PCT/JP2022/010108 2021-03-18 2022-03-08 Dispositif d'entraînement WO2022196458A1 (fr)

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JP2021045096A JP2022144197A (ja) 2021-03-18 2021-03-18 駆動装置
JP2021-045096 2021-03-18

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WO2017175843A1 (fr) * 2016-04-06 2017-10-12 株式会社デンソー Dispositif de détection de rotation et dispositif de direction assistée électromotrice l'utilisant
JP2018148688A (ja) * 2017-03-06 2018-09-20 株式会社デンソー 駆動装置
JP2019068542A (ja) * 2017-09-29 2019-04-25 日本電産エレシス株式会社 回路基板、モータ駆動装置および電動パワーステアリング装置
WO2019180936A1 (fr) * 2018-03-23 2019-09-26 三菱電機株式会社 Souffleur d'air électrique, aspirateur électrique et sèche-mains
JP2020072621A (ja) * 2018-11-02 2020-05-07 株式会社デンソー 駆動装置、および、これを用いた電動パワーステアリング装置
JP2020188656A (ja) * 2019-05-17 2020-11-19 株式会社デンソー 冗長回路装置
JP2021035105A (ja) * 2019-08-21 2021-03-01 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駆動装置の組立方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014197658A (ja) * 2013-03-06 2014-10-16 株式会社デンソー 電子制御装置
JP2016512948A (ja) * 2013-03-25 2016-05-09 ピアーブルグ パンプ テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツングＰｉｅｒｂｕｒｇ Ｐｕｍｐ Ｔｅｃｈｎｏｌｏｇｙ ＧｍｂＨ 車両用電子流体ポンプ
JP2017189034A (ja) * 2016-04-06 2017-10-12 株式会社デンソー 駆動装置、および、これを用いた電動パワーステアリング装置
WO2017175843A1 (fr) * 2016-04-06 2017-10-12 株式会社デンソー Dispositif de détection de rotation et dispositif de direction assistée électromotrice l'utilisant
JP2018148688A (ja) * 2017-03-06 2018-09-20 株式会社デンソー 駆動装置
JP2019068542A (ja) * 2017-09-29 2019-04-25 日本電産エレシス株式会社 回路基板、モータ駆動装置および電動パワーステアリング装置
WO2019180936A1 (fr) * 2018-03-23 2019-09-26 三菱電機株式会社 Souffleur d'air électrique, aspirateur électrique et sèche-mains
JP2020072621A (ja) * 2018-11-02 2020-05-07 株式会社デンソー 駆動装置、および、これを用いた電動パワーステアリング装置
JP2020188656A (ja) * 2019-05-17 2020-11-19 株式会社デンソー 冗長回路装置
JP2021035105A (ja) * 2019-08-21 2021-03-01 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駆動装置の組立方法

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