US20160362127A1 - Electronic Controlling Unit, Electric Power Steering Device, and Vehicle - Google Patents
Electronic Controlling Unit, Electric Power Steering Device, and Vehicle Download PDFInfo
- Publication number
- US20160362127A1 US20160362127A1 US15/103,035 US201415103035A US2016362127A1 US 20160362127 A1 US20160362127 A1 US 20160362127A1 US 201415103035 A US201415103035 A US 201415103035A US 2016362127 A1 US2016362127 A1 US 2016362127A1
- Authority
- US
- United States
- Prior art keywords
- controlling unit
- input
- side wall
- electronic controlling
- sealing member
- 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.)
- Abandoned
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Classifications
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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
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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
- B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
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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
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20845—Modifications to facilitate cooling, ventilating, or heating for automotive electronic casings
- H05K7/20854—Heat transfer by conduction from internal heat source to heat radiating structure
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
Definitions
- the present invention relates to an electronic controlling unit, an electric power steering device, and a vehicle and, more particularly, to an electronic controlling unit which controls driving of an electric motor, an electric power steering device which uses the electronic controlling unit, and a vehicle equipped with the electric power steering device.
- An electronic controlling unit in an electric power steering device controls driving of an electric motor, and includes a power module and a control board.
- the power module includes a switching element.
- the control board includes a controller which controls the output current of the power module.
- PTL1 proposes an electric power steering device which employs an electronic controlling unit and an electric motor integrated with each other.
- the electronic controlling unit in the electric power steering device includes a power module, a controlling module, a DC conduction module, and an AC conduction module.
- the power module includes a switching element.
- the controlling module controls the output current of the power module.
- the DC conduction module includes a power terminal block supplied with power from a battery.
- the AC conduction module includes a motor terminal block which supplies power to the electric motor.
- the power module including a switching element Since the power module including a switching element generates heat in large quantities, an improvement in its heat radiation performance is also required with the downsizing of the electronic controlling unit.
- the inventor of the present invention made this invention by focusing attention on the fact that the conventional electronic controlling unit has a rectangular housing.
- an electronic controlling unit comprising: a power module including a switching element; an input/output board including an input connector and an output connector; a control board including a controller configured to control an output current of the power module; and a housing configured to accommodate the power module, the input/output board, and the control board.
- the housing includes amounting portion and a ceiling portion opposed to each other with a spacing therebetween in one direction, and at least four side wall portions located between the mounting portion and the ceiling portion. At least one of the at least four side wall portions is an inclined side wall portion inclined inwardly at an acute angle with respect to the mounting portion.
- the power module includes a sealing member having a square planar shape, a plurality of first leads aligned along one side of two opposite sides of the sealing member, and a plurality of second leads aligned along the other side of the two sides of the sealing member.
- the first leads are connected to the input/output board.
- the second leads are connected to the control board.
- the sealing member is tilted along the inclined side wall portion.
- the sealing member is connected to the inclined side wall portion directly or indirectly via a heat conducting member.
- the electronic controlling unit is used to control driving of an electric motor.
- An electric power steering device includes the electronic controlling unit according to above-described (4), the electric motor generates a steering assist force to assist steering operation.
- the present invention provides a vehicle equipped with the electric power steering device according to above-described (5).
- An electronic controlling unit includes power modules, an input/output board, a control board, a housing, and a positioning mechanism.
- the power modules include switching elements.
- the input/output board includes an input connector and an output connector.
- the control board includes a controller which controls the output current of each of the power modules.
- the housing accommodates the power modules, the input/output board, and the control board.
- the positioning mechanism positions the power modules in the housing.
- the housing includes side wall portions, and the positioning mechanism includes positioning projections and positioning terminals.
- the positioning projections are formed inside the side wall portions of the housing.
- the positioning terminals are provided in the power modules and include fitting holes to be engaged by the positioning projections.
- the input/output board and the control board have flat surfaces facing each other with a predetermined spacing between them
- each of the power modules includes a sealing member, a plurality of first leads, a plurality of second leads, and the positioning terminals.
- the sealing member has a square planar shape.
- the plurality of first leads are aligned along one side of two opposite sides of the sealing member.
- the plurality of second leads are aligned along the other side of the two sides of the sealing member.
- the plurality of first leads are connected to the input/output board.
- the plurality of second leads are connected to the control board.
- the positioning terminals are electrically insulated from the first and second leads.
- the positioning mechanism is preferably configured to position the first leads and the connecting portion of the input/output board relative to each other and position the second leads and the connecting portion of the control board relative to each other.
- An electric power steering device includes the electronic controlling unit according to any one of above-described (7) to (10).
- a vehicle according to an aspect of the present invention includes the power steering device according to above-described (11).
- An electronic controlling unit includes first and second power modules, an input/output board, a control board, and a housing.
- Each of the first and second power modules includes a switching element.
- the input/output board includes an input connector and an output connector.
- the control board includes a controller which controls the output current of each of the first and second power modules.
- the housing accommodates the power modules, the input/output board, and the control board.
- the input/output board and the control board have flat surfaces facing each other with a predetermined spacing between them.
- Each of the first and second power modules includes a switching element as well as a sealing member, a plurality of first leads, and a plurality of second leads.
- the sealing member has a square planar shape.
- the plurality of first leads are aligned along one side of two opposite sides of the sealing member.
- the plurality of second leads are aligned along the other side of the two sides of the sealing member.
- the first leads are connected to the input/output board.
- the second leads are connected to the control board.
- the respective sealing members of the first and second power modules are spaced apart from each other and from the input/output board and the control board.
- each of the input/output board and the control board includes first and second sides opposed to each other with a spacing between them in the one direction, the first power module is located closer to the first side of each of the input/output board and the control board, and the second power module is located closer to the second side of each of the input/output board and the control board.
- the housing includes first and second side wall portions opposed to each other in the one direction, the sealing member of the first power module is connected to the first side wall portion of the housing directly or via a heat conducting member, and the sealing member of the second power module is connected to the second side wall portion of the housing directly or via a heat conducting member.
- the plurality of first leads of the first power module and the plurality of first leads of the second power module include leads arranged in mirror symmetry, in which leads having the same function are opposed to each other in the one direction.
- the electronic controlling unit according to any one of above-described (13) to (16) preferably serves as an electronic controlling unit for an electric motor which controls driving of the electric motor.
- An electric power steering device includes the electronic controlling unit according to above-described (17).
- a vehicle according to an aspect of the present invention includes the electric power steering device according to above-described (18).
- the present invention can provide an electronic controlling unit which can have a relatively small size, an electric power steering device which uses the electronic controlling unit, and a vehicle equipped with the electric power steering device.
- FIG. 1 is a view illustrating the basic structure of an electric power steering device mounted in a vehicle according to the present invention
- FIG. 2 is a block diagram illustrating the controlling system of a motor controlling device in the electric power steering device illustrated in FIG. 1 ;
- FIG. 3 is an exploded perspective view illustrating the internal arrangement of an electronic controlling unit serving as the motor controlling device according to the present invention
- FIG. 4 is a perspective view illustrating the outer arrangement of the electronic controlling unit according to the present invention.
- FIG. 5 is a first side view when viewed from a direction indicated by an arrow L 1 in FIG. 4 ;
- FIG. 6 is a second side view when viewed from a direction indicated by an arrow L 2 in FIG. 4 ;
- FIG. 7 is a perspective view illustrating the power module taken from FIG. 3 ;
- FIG. 8 is a view when viewed from a direction indicated by an arrow L 3 in FIG. 7 ;
- FIG. 9 is a sectional view illustrating the schematic arrangement of a housing in the electronic controlling unit according to the present invention.
- FIG. 9 does not illustrate electronic components mounted on an input/output board 70 and a control board 80 (both will be described later).
- FIG. 1 is a view illustrating an electric power steering device mounted in a vehicle according an embodiment of the present invention.
- reference numeral 1 denotes a steering wheel.
- a steering force generated as the driver operates the steering wheel 1 is transmitted to a steering shaft 2 .
- the steering shaft 2 includes an input shaft 2 a and an output shaft 2 b .
- the input shaft 2 a has its one end connected to the steering wheel 1 and its other end connected to one end of the output shaft 2 b via a steering torque sensor 3 .
- the steering force transmitted to the output shaft 2 b is further transmitted to a lower shaft 5 via a universal joint 4 and to a pinion shaft 7 via a universal joint 6 .
- the steering force transmitted to the pinion shaft 7 is further transmitted to tie rods 9 via a steering gear 8 to turn a steered wheel (not illustrated).
- the steering gear 8 employs a rack-and-pinion system including a pinion 8 a connected to the pinion shaft 7 and a rack 8 b which meshes with the pinion 8 a .
- the steering gear 8 converts a rotational motion transmitted to the pinion 8 a into a rectilinear motion in the vehicle widthwise direction in the rack 8 b.
- a steering assist mechanism 10 which transmits a steering assist force to the output shaft 2 b of the steering shaft 2 is connected to the output shaft 2 b of the steering shaft 2 .
- the steering assist mechanism 10 includes a reduction gear 11 and an electric motor 12 .
- the reduction gear 11 includes, for example, a worm gear mechanism connected to the output shaft 2 b .
- the electric motor 12 is implemented in, for example, a three-phase brushless motor which is connected to the reduction gear 11 and produces a steering assist force.
- the steering torque sensor 3 detects a steering torque applied to the steering wheel 1 and transmitted to the input shaft 2 a .
- the steering torque sensor 3 for example, converts the steering torque into a rotational angular displacement of a torsion bar (not illustrated) interposed between the input shaft 2 a and the output shaft 2 b .
- the steering torque sensor 3 converts the rotational angular displacement into an angular difference between an input-side angle sensor (not illustrated) placed close to the input shaft 2 a and an output-side angle sensor (not illustrated) placed close to the output shaft 2 b , and detects the angular difference.
- the electric motor 12 is implemented in a three-phase brushless motor and includes motor windings La, Lb, and Lc of three phases: phases A, B, and C which are wound around the slots of a stator, as illustrated in FIG. 2 .
- the motor windings La, Lb, and Lc of the respective phases have their one-side ends connected to each other in a star connection configuration and their other-side ends connected to a motor controlling device 20 and supplied with motor drive currents Ia, Ib, and Ic, respectively.
- the electric motor 12 includes a rotational position sensor 13 a which detects the motor rotational position, as illustrated in FIG. 2 .
- the value detected by the rotational position sensor 13 a is supplied to a motor rotational angle detection circuit 13 , which detects a motor rotational angle ⁇ m.
- the motor controlling device 20 receives a DC current from a battery 22 serving as a DC power supply.
- the motor controlling device 20 includes a control computing device 31 , first and second motor drive circuits 32 A and 32 B, and motor current cutoff circuits 33 A and 33 B, as illustrated in FIG. 2 .
- the control computing device 31 computes three-phase voltage command values V 1 * and V 2 *.
- the first and second motor drive circuits 32 A and 32 B receive the three-phase voltage command values V 1 * and V 2 * output from the control computing device 31 .
- the motor current cutoff circuits 33 A and 33 B are interposed between the first and second motor drive circuits 32 A and 32 B and the multiphase motor windings La, Lb, and Lc of the electric motor 12 .
- the control computing device 31 receives a steering torque detected by the steering torque sensor 3 , a vehicle speed detected by a vehicle speed sensor 21 , a motor rotational angle ⁇ m output from the motor rotational angle detection circuit 13 , a motor angular velocity, and a motor angular acceleration.
- the control computing device 31 further receives motor drive currents I 1 a to I 1 c and I 2 a to I 2 c output from current detection circuits 39 A and 39 B and supplied to the motor windings La, Lb, and Lc of the respective phases of the electric motor 12 .
- the control computing device 31 calculates three-phase voltage command values V 1 * and V 2 * for the first and second motor drive circuits 32 A and 32 B based on the steering torque, the vehicle speed, the motor rotational angle ⁇ m, the motor angular velocity, and the motor angular acceleration.
- the control computing device 31 outputs the calculated three-phase voltage command values V 1 * and V 2 * to gate drive circuits 41 A and 41 B (to be described later) of the first and second motor drive circuits 32 A and 32 B.
- the control computing device 31 includes an anomaly detection unit 31 a .
- the anomaly detection unit 31 a detects open-circuit failure of the upper arm of field-effect transistors (FETs) Q 1 to Q 6 serving as switching elements which are included in first and second inverter circuits 42 A and 42 B (to be described later), short-circuit failure of the lower arm of the field-effect transistors (FETs) Q 1 to Q 6 , and a burnout anomaly in the coil portions of the motor windings La, Lb, and Lc of the respective phases of the electric motor 12 .
- FETs field-effect transistors
- anomaly detection unit 31 a when open-circuit failure and short-circuit failure of the field-effect transistors (FETs) Q 1 to Q 6 are not detected, anomaly detection signals SAa and SAb having logical value “0” (normal) are output to the gate drive circuits 41 A and 41 B of the motor drive circuits 32 A and 32 B.
- an anomaly detection signal SAa or SAb having logical value “1” (anomalous) is output to the gate drive circuit 41 A or 41 B of the motor drive circuit 32 A or 32 B whose anomaly has been detected.
- the first and second motor drive circuits 32 A and 32 B include gate drive circuits 41 A and 41 B, respectively, and first and second inverter circuits 42 A and 42 B, respectively.
- the gate drive circuits 41 A and 41 B form gate signals upon receiving the three-phase voltage command values V 1 * and V 2 * output from the control computing device 31 , and serve as anomaly time current controlling units.
- the first and second inverter circuits 42 A and 42 B receive the gate signals output from the gate drive circuits 41 A and 41 B.
- the gate drive circuit 41 A When the anomaly detection signal SAa received from the control computing device 31 has logical value “0” (normal), the gate drive circuit 41 A outputs three high-level gate signals to the motor current cutoff circuit 33 A and a high-level gate signal to a power cutoff circuit 44 A. When the anomaly detection signal SAa has logical value “1” (anomalous), the gate drive circuit 41 A simultaneously outputs three low-level gate signals to the motor current cutoff circuit 33 A to cut off the motor drive currents I 1 a to I 1 c and outputs a low-level gate signal to the power cutoff circuit 44 A to cut off the battery power.
- the gate drive circuit 41 B outputs three high-level gate signals to the motor current cutoff circuit 33 B and a high-level gate signal to a power cutoff circuit 44 B.
- the gate drive circuit 41 B simultaneously outputs three low-level gate signals to the motor current cutoff circuit 33 B to cut off the motor drive currents I 2 a to I 2 c and outputs a low-level gate signal to the power cutoff circuit 44 B to cut off the battery current.
- the first and second inverter circuits 42 A and 42 B receive the battery power of the battery 22 via a noise filter 43 and the power cutoff circuits 44 A and 44 B, respectively, and are connected to smoothing electrolytic capacitors CA and CB, respectively, on the input sides.
- Each of the first and second inverter circuits 42 A and 42 B includes six field-effect transistors (FETs) Q 1 to Q 6 serving as switching elements, and a parallel circuit of three switching arms SAa, SAb, and SAc each including a series circuit of two field-effect transistors.
- FETs field-effect transistors
- the field-effect transistors Q 1 to Q 6 that are included in the first inverter circuit 42 A receive the gate signal output from the gate drive circuit 41 A to supply a phase-A motor drive current I 1 a , a phase-B motor drive current I 1 b , and a phase-C motor drive current I 1 c from the intervals between the field-effect transistors of the respective switching arms SAa, SAb, and SAc to the motor windings La, Lb, and Lc of the respective phases of the electric motor 12 via the motor current cutoff circuit 33 A.
- the field-effect transistors Q 1 to Q 6 that are included in the second inverter circuit 42 B receive the gate signal output from the gate drive circuit 41 B to supply a phase-A motor drive current I 2 a , a phase-B motor drive current I 2 b , and a phase-C motor drive current I 2 c from the intervals between the field-effect transistors of the respective switching arms SBa, SBb, and SBc to the motor windings La, Lb, and Lc of the respective phases of the electric motor 12 via the motor current cutoff circuit 33 B.
- the motor current cutoff circuit 33 A includes three field-effect transistors QA 1 to QA 3 for current cutoff.
- the motor current cutoff circuit 33 B includes three field-effect transistors QB 1 to QB 3 for current cutoff.
- first and second directions orthogonal to each other in the same plane will sometimes be referred to as the X- and Y-directions hereinafter.
- a third direction perpendicular to the X- and Y-directions will sometimes be referred to as the Z-direction hereinafter.
- the electronic controlling unit 50 mainly includes first and second power modules 60 A and 60 B, an input/output board 70 , a control board 80 , and a housing 90 which accommodates these components, as illustrated in FIG. 3 .
- the first power module 60 A mainly includes, for example, the motor current cutoff circuit 33 A, the first inverter circuit 42 A including a plurality of switching elements, and the power cutoff circuit 44 A that are illustrated in FIG. 2 .
- the second power module 60 B mainly includes, for example, the motor current cutoff circuit 33 B, the second inverter circuit 42 B including a plurality of switching elements, and the power cutoff circuit 44 B that are illustrated in FIG. 2 .
- the electronic controlling unit 50 according to an embodiment includes duplex first and second power modules 60 A and 60 B, so that even when either power module suffers failure, the remaining power module can control driving of the electric motor 12 .
- the input/output board 70 includes a power input connector 71 (see FIG. 4 ) and a three-phase output connector 72 , as well as electrolytic capacitors (CA and CB), coils 73 a and 73 b which form the noise filter 43 , resistors, and electronic components (discrete components) 73 such as a three-terminal regulator, as illustrated in FIG. 3 .
- a power input connector 71 see FIG. 4
- a three-phase output connector 72 as well as electrolytic capacitors (CA and CB), coils 73 a and 73 b which form the noise filter 43 , resistors, and electronic components (discrete components) 73 such as a three-terminal regulator, as illustrated in FIG. 3 .
- the power input connector 71 and the three-phase output connector 72 correspond to an input connector and an output connector, respectively, of the present invention.
- the control board 80 includes, for example, a control computing device 31 and gate drive devices 82 A and 82 B, as well as capacitors, resistors, and electronic components such as a signal input connector 81 , as illustrated in FIG. 3 .
- the control computing device 31 serves as a controller which controls the output currents of the first and second power modules 60 A and 60 B.
- the gate drive device 82 A includes the gate drive circuit 41 A illustrated in FIG. 2 .
- the gate drive device 82 B includes the gate drive circuit 41 B illustrated in FIG. 2 .
- the control board 80 and the input/output board 70 have a multilayer wiring structure including wiring layers in, for example, the front and back surfaces or the front and back surfaces and inner layers. Examples of the control board 80 and the input/output board 70 include a printed circuit board, a ceramic circuit board, and an insert-molded circuit board including an insert base.
- the housing 90 mainly includes a case 91 and a cover 92 , which form an accommodation unit accommodating, for example, the first and second power modules 60 A and 60 B, the input/output board 70 , and the control board 80 , as illustrated in FIG. 3 .
- the case 91 and the cover 92 are made of a conductive metal material such as aluminum die-cast (ADC).
- the case 91 and the cover 92 have a square planar shape when viewed in a plan view, as illustrated in FIGS. 3 to 6 and 9 .
- the case 91 has a recessed configuration including a ceiling portion 91 x , four side wall portions 91 a , 91 b , 91 c , and 91 d integrated with the edges of the ceiling portion 91 x to surround the center of the ceiling portion 91 x , and an opening portion opposed to the ceiling portion 91 x .
- the cover 92 is mounted to cover the opening portion.
- the two side wall portions 91 a and 91 b are opposed to each other with a spacing between them in the X-direction while the remaining two side wall portions 91 c and 91 d are opposed to each other with a spacing between them in the Y-direction perpendicular to the X-direction.
- the cover 92 has a planar shape. Boss portions 92 b are formed on the lower surface of the cover 92 to be screwed to the electric motor 12 (to be described later) by screw members.
- the ceiling portion 91 x of the case 91 forms the ceiling portion 90 x of the housing 90 while the four side wall portions 91 a , 91 b , 91 c , and 91 d of the case 91 form four side wall portions 90 a , 90 b , 90 c , and 90 d , respectively, of the housing 90 .
- the cover 92 forms a mounting portion 90 y of the housing 90 .
- the housing 90 includes a ceiling portion 90 x and a mounting portion 90 y opposed to each other with a spacing between them in the direction of thickness (Z-direction) of the housing 90 , and four side wall portions 90 a , 90 b , 90 c , and 90 d located between the ceiling portion 90 x and the mounting portion 90 y .
- the accommodation unit surrounded by the ceiling portion 90 x , the mounting portion 90 y , and the four side wall portions 90 a , 90 b , 90 c , and 90 d accommodates, for example, the first and second power modules 60 A and 60 B, the input/output board 70 , and the control board 80 .
- the first and second power modules 60 A and 60 B are individually screwed to the two opposed side wall portions 91 a and 91 b , respectively, of the case 91 by screw members 65 from inside, as illustrated in FIG. 3 .
- the input/output board 70 is screwed to the ceiling portion 91 x of the case 91 by screw members 75 from inside.
- the control board 80 is screwed to the ceiling portion 91 x of the case 91 by screw members 85 from inside.
- the cover 92 is screwed to the side wall portions 91 a , 91 b , 91 c , and 91 d of the case 91 by screw members 96 from inside.
- the input/output board 70 and the control board 80 are opposed to each other with a predetermined spacing between them in the direction of thickness (Z-direction) of the electronic controlling unit 50 .
- the three-phase output connector 72 of the input/output board 70 is exposed outside from the side wall portion 91 d of the case 91 , as illustrated in FIGS. 4 and 5 .
- the power input connector 71 of the input/output board 70 and the signal input connector 81 of the control board 80 are exposed outside from the side wall portion 91 c of the case 91 , as illustrated in FIG. 6 .
- Each of the first and second power modules 60 A and 60 B includes a sealing member 61 , a plurality of first leads 63 , and a plurality of second leads 64 , as illustrated in FIGS. 7 and 8 .
- Each of the first and second power modules 60 A and 60 B has a bidirectional lead array package structure.
- the sealing member 61 has a square planar shape when viewed in a plan view and is formed in, for example, a rectangle having two long sides 61 a and 61 b and two short sides 61 c and 61 d in an embodiment of the present invention.
- the sealing member 61 is made of, for example, an insulating resin or ceramics.
- the sealing member 61 of the first power module 60 A mainly seals, for example, the switching elements that are included in the first inverter circuit 42 A illustrated in FIG. 2 .
- the sealing member 61 of the second power module 60 B mainly seals, for example, the switching elements that are included in the second inverter circuit 42 B illustrated in FIG. 2 .
- each of the pluralities of first and second leads 63 and 64 extends into and out of the sealing member 61 , and includes an internal lead portion located inside the sealing member 61 and an external lead portion located outside the sealing member 61 .
- the plurality of first leads 63 are aligned along one long side 61 a of the two long sides 61 a and 61 b of the sealing member 61 in their external lead portions located outside the sealing member 61 .
- the plurality of second leads 64 are aligned along the other long side 61 b of the two long sides 61 a and 61 b of the sealing member 61 in their external lead portions located outside the sealing member 61 .
- Each of the pluralities of first and second leads 63 and 64 is bent in a plurality of steps in their external lead portions located outside the sealing member 61 , as illustrated in FIG. 8 .
- each of the plurality of first leads 63 is bent in, for example, three steps and includes a first portion 63 a , a second portion 63 b , and a third portion 63 c .
- the first portion 63 a projects from one long side 61 a of the sealing member 61 .
- the second portion 63 b is bent in the direction of thickness of the sealing member 61 from the first portion 63 a .
- the third portion 63 c is bent from the second portion 63 b toward the back surface of the sealing member 61 .
- each of the plurality of second leads 64 is bent in, for example, two steps and includes a first portion 64 a and a second portion 64 b , as illustrated in FIG. 8 .
- the first portion 64 a projects from the other long side 61 b of the sealing member 61 .
- the second portion 64 b is bent and tilted from the first portion 64 a to the back surface of the sealing member 61 .
- the sealing member 61 includes notched portions 62 on the two opposite short sides 61 c and 61 d , respectively, as illustrated in FIGS. 7 and 8 .
- the notched portions 62 are used to pass the screw members 65 (see FIG. 3 ) when the first and second power modules 60 A and 60 B are screwed to the inner wall of the case 91 .
- each of the plurality of first leads 63 is electrically, mechanically connected by, for example, soldering to a through-hole electrode 70 s (see FIG. 9 ) forming part of the wiring of the input/output board 70 .
- Each of the plurality of second leads 64 is electrically, mechanically connected by, for example, soldering to a through-hole electrode 80 s (see FIG. 9 ) forming part of the wiring of the control board 80 .
- the plurality of first leads 63 include a first lead 63 electrically connected to the terminal of the power input connector 71 , and a first lead 63 electrically connected to the terminal of the three-phase output connector 72 , via the wiring of the input/output board 70 .
- the plurality of second leads 64 include a second lead 64 electrically connected to the terminal of the signal input connector 81 via the wiring of the control board 80 .
- the electric motor 12 includes a motor stator (not illustrated), a motor rotor (not illustrated), a cylindrical motor frame 12 d , a motor output shaft 12 a , first mounting flanges 12 b , and second mounting flanges 12 c , as illustrated in FIG. 3 .
- the motor stator is formed by winding three-phase coils.
- the motor frame 12 d includes the rotational position sensor 13 a illustrated in FIG. 2 .
- the motor output shaft 12 a is connected to the motor stator and projects out of the motor frame 12 d .
- the first mounting flanges 12 b are placed in the vicinities of a top plate 12 e of the motor frame 12 d placed in correspondence with the motor output shaft 12 a at the opposite position.
- the second mounting flanges 12 c are formed on the open end portions of the motor frame 12 d from which the motor output shaft 12 a projects and are attached to side of a gear box (not illustrated) including the reduction gear 11 .
- the electronic controlling unit 50 is placed such that the cover 92 (mounting portion 90 y ) abuts against the top plate 12 e of the electric motor 12 .
- Boss portions 95 b formed on the cover 92 are fitted and screwed into the first mounting flanges 12 b by screw members (not illustrated) to attach the electronic controlling unit 50 to the electric motor 12 , as illustrated in FIGS. 3 to 6 .
- the input/output board 70 includes a power input connector 71 , a three-phase output connector 72 , electrolytic capacitors CA and CB, coils 73 e and 73 b which form a noise filter 43 , resistors, and electronic components (discrete components) 73 such as a three-terminal regulator.
- the control board 80 includes electronic components such as gate drive devices (gate drive circuits 41 A and 41 B) and a controller (control computing device 31 ) which controls the output currents of the first and second power modules 60 A and 60 B, as well as electronic components such as capacitors, resistors, and a signal input connector 81 .
- electronic components such as gate drive devices (gate drive circuits 41 A and 41 B) and a controller (control computing device 31 ) which controls the output currents of the first and second power modules 60 A and 60 B, as well as electronic components such as capacitors, resistors, and a signal input connector 81 .
- the first and second power modules 60 A and 60 B are individually screwed to side wall portions 91 a and 91 b , respectively, of the case 91 by screw members 65 from inside.
- the input/output board 70 is screwed at a position adjacent to the inner wall of the ceiling portion 91 x of the case 91 by screw members 75 .
- the input/output board 70 includes a plurality of screw holes 70 c .
- the screw members 75 are inserted into the screw holes 70 c , as illustrated in FIG. 3 .
- the distal end portions (third portions 63 c ) of the plurality of first leads 63 of each of the first and second power modules 60 A and 60 B are inserted into through-hole electrodes 70 s formed on the wiring of the input/output board 70 , as illustrated in FIG. 9 .
- the control board 80 is screwed by screw members 85 at a position spaced apart from the inner wall of the ceiling portion 91 x of the case 91 in parallel with the input/output board 70 .
- the control board 80 includes a plurality of screw holes 80 a . In screwing, the screw members 85 are inserted into the screw holes 80 a .
- the distal end portions (second portions 64 b ) of the plurality of second leads 64 of each of the first and second power modules 60 A and 60 B are inserted into through-hole electrodes 80 s formed on the wiring of the control board 80 , as illustrated in FIG. 9 .
- the distal end portions (third portions 63 c ) of the plurality of first leads 63 of each of the first and second power modules 60 A and 60 B are electrically, mechanically connected by soldering to the through-hole electrodes 70 s formed on the wiring of the input/output board 70 .
- the distal end portions (second portions 64 b ) of the plurality of second leads 64 of each of the first and second power modules 60 A and 60 B are electrically, mechanically connected by soldering to the through-hole electrodes 80 s formed on the wiring of the control board 80 .
- the cover 92 is mounted to cover the opening in the case 91 and screwed to the side wall portions 91 a , 91 b , 91 c , and 91 d of the case 91 by screw members 96 from the outside of the cover 92 .
- the cover 92 includes a plurality of screw holes 92 a . In screwing, the screw members 96 are inserted into the screw holes 92 a . With this operation, assembly of an electronic controlling unit 50 according to an embodiment of the present invention is nearly completed.
- the input/output board 70 and the control board 80 are opposed to each other with a predetermined spacing between them in the direction of thickness (Z-direction) of the electronic controlling unit 50 , as illustrated in FIG. 9 .
- the input/output board 70 is located closer to the ceiling portion 91 x of the case 91 than the control board 80
- the control board 80 is located closer to the cover 92 than the input/output board 70 .
- the input/output board 70 has a planar size smaller than that of the control board 80 .
- the input/output board 70 includes two opposite sides 70 a and 70 b and the control board 80 includes two opposite sides 80 aa and 80 bb.
- One side 70 a of the input/output board 70 is located on the same side as one side 80 aa of the control board 80 and inside this side 80 aa .
- the other side 70 b of the input/output board 70 is located on the same side as the other side 80 bb of the control board 80 and inside this side 80 bb.
- the first power module 60 A is placed on the side of one side 70 a and one side 80 aa of the input/output board 70 and the control board 80 , respectively, to traverse one side 70 a of the input/output board 70 .
- the second power module 60 B is placed on the side of the other side 70 b and the other side 80 bb of the input/output board 70 and the control board 80 , respectively, to traverse the other side 70 b of the input/output board 70 .
- the housing 90 includes four side wall portions 90 a , 90 b , 90 c , and 90 d , as described earlier.
- the two side wall portions 90 a and 90 b opposed to each other in the X-direction are inclined inwardly at an acute angle ⁇ with respect to the mounting portion 90 y , as illustrated in FIG. 9 .
- the two side wall portions 90 a and 90 b inclined inwardly at an acute angle ⁇ with respect to the mounting portion 90 y correspond to inclined side wall portions according to the present invention.
- the sealing member 61 extends along the side wall portion (inclined side wall portion) 90 a , as illustrated in FIG. 9 .
- the sealing member 61 extends along the side wall portion (inclined side wall portion) 90 b.
- the third portion 63 c of each of the plurality of first leads 63 bent in three steps is inserted into the through-hole electrode 70 s placed on the input/output board 70 and is electrically, mechanically connected to it by soldering, as illustrated in FIG. 9 .
- the second portion 64 b of each of the plurality of second leads 64 bent in two steps is inserted into the through-hole electrode 80 s placed on the control board 80 and is electrically, mechanically connected to it by soldering.
- the third portion 63 c is bent nearly perpendicularly to the electronic component mounting surface of the input/output board 70 to tilt the first and second power modules 60 A and 60 B, as illustrated in FIG. 9 .
- the second portion 64 b is bent nearly perpendicularly to the electronic component mounting surface of the control board 80 to tilt the first and second power modules 60 A.
- the sealing member 61 is connected to the side wall portion (inclined side wall portion) 90 a of the housing 90 directly or via a heat conducting member.
- the sealing member 61 is connected to the side wall portion (inclined side wall portion) 90 b of the housing 90 directly or via a heat conducting member.
- the heat conducting member include sheet-shaped heat conducting substances and paste-like heat conducting substances such as thermal grease, thermal pastes, silicone grease, and heat sink compounds.
- an electronic controlling unit which controls driving of an electric motor has a rectangular housing.
- the two opposite side wall portions 90 a and 90 b of the four side wall portions 90 a to 90 d are configured, as inclined side wall portions, to be inclined at an acute angle ⁇ with respect to the mounting portion 90 y , as illustrated in FIG. 9 .
- the volume of the electronic controlling unit 50 can be reduced without changing the thickness of the electronic controlling unit 50 and the footprint (projection area) of the electronic controlling unit 50 when viewed in a plan view.
- This makes it possible to make the electronic controlling unit 50 smaller than the conventional rectangular electronic controlling unit.
- This makes it possible to provide an electronic controlling unit 50 which can have a relatively small size, an electric power steering device which uses the electronic controlling unit 50 , and a vehicle equipped with the electric power steering device.
- the volume of the electronic controlling unit 50 can be reduced without reducing the area of the mounting portion 90 y , which can be stably attached to the electric motor 12 while achieving downsizing.
- the first and second power modules 60 A and 60 B are tilted such that the sealing members 61 extend along the side wall portions (inclined side wall portions) 90 a and 90 b.
- the degree of freedom of arrangement of other electronic components (discrete components) to be placed between the input/output board 70 and the control board 80 can be set higher than that when a power module is interposed between the input/output board 70 and the control board 80 .
- the sealing members 61 are connected to the side wall portions (inclined side wall portions) 90 a and 90 b directly or indirectly via heat conducting members.
- heat generated by the first and second power modules 60 A and 60 B can be efficiently transferred to the housing 90 so that the heat radiation performance of the electronic controlling unit 50 can be improved, compared to the conventional case where a power module is accommodated in the housing without contact.
- This makes it possible to provide an electronic controlling unit 50 which can have a relatively small size and a relatively high heat radiation performance, an electric power steering device which uses the electronic controlling unit 50 , and a vehicle equipped with the electric power steering device.
- the two side wall portions 90 a and 90 b connected to the first and second power modules 60 A and 60 B are inclined to the inner side of the housing 90 .
- the area of heat radiation of a heat radiator including the two side wall portions 90 a and 90 b can be increased without changing the thickness of the electronic controlling unit 50 and the footprint (projection area) of the electronic controlling unit 50 when viewed in a plan view.
- each of the plurality of first leads 63 of each of the first and second power modules 60 A and 60 B includes a first portion 63 a , a second portion 63 b , and a third portion 63 c , as illustrated in FIG. 8 .
- the first portion 63 a projects from the sealing member 61 .
- the second portion 63 b is bent in the direction of thickness of the sealing member 61 from the first portion 63 a .
- the third portion 63 c is bent from the second portion 63 b toward the back surface of the sealing member 61 .
- the third portion 63 c is bent nearly perpendicularly to the electronic component mounting surface of the input/output board 70 , as illustrated in FIG.
- first and second power modules 60 A and 60 B a first portion 64 a and a second portion 64 b are provided as illustrated in FIG. 8 .
- the first portion 64 a projects from the sealing member 61 .
- the second portion 64 b is bent and tilted from the first portion 64 a toward the back surface of the sealing member 61 .
- the second portion 64 b is bent nearly perpendicularly to the electronic component mounting surface of the control board 80 , as illustrated in FIG. 9 .
- the first and second power modules 60 A and 60 B can be mounted on the input/output board 70 and the control board 80 to have a tilt with respect to the input/output board 70 and the control board 80 opposed to each other with a predetermined spacing between them in the Z-direction.
- the third portions 63 c of the first leads 63 are placed nearly perpendicular to the electronic component mounting surface of the input/output board 70 .
- the above-described embodiment assumes an electronic controlling unit 50 including a housing 90 having four side wall portions 90 a , 90 b , 90 c , and 90 d .
- the present invention is not limited to this and is applicable to an electronic controlling unit including a housing having more than four side wall portions.
- the above-described embodiment further assumes an electronic controlling unit 50 including two, first and second power modules 60 A and 60 B.
- the present invention is not limited to this and is applicable to an electronic controlling unit including one or three or more power modules.
- the two side wall portions 90 a and 90 b of the four side wall portions 90 a , 90 b , 90 c , and 90 d are inclined as inclined side wall portions.
- the present invention is not limited to this and at least one side wall portion may be inclined as inclined side wall portions.
- the side wall portions are preferably inclined as inclined side wall portions, depending on the number of power modules.
- windings of a plurality of systems may be applied to one electric motor to drive the winding of each system using an independent power module.
- motor rotational angle detection circuit 20 . . . motor controlling device, 21 . . . vehicle speed sensor, 22 . . . battery, 31 . . . control computing device, 32 A . . . first motor drive circuit, 32 B . . . second motor drive circuit, 33 A . . . motor current cutoff circuit, 33 B . . . motor current cutoff circuit, 39 A, 39 B . . . current detection circuit, 41 A, 41 B . . . gate drive circuit, 42 A, 42 B . . . inverter circuit, 43 . . . noise filter, 44 A, 44 B . . . power cutoff circuit, 50 . . .
- ECU electronic controlling unit
- 60 A . . . first power module 60 B . . . second power module, 61 . . . sealing member, 61 a , 61 b . . . long side, 61 c , 61 d . . . short side, 62 . . . notched portion, 63 . . . first lead, 63 a . . . first portion, 63 b . . . second portion, 63 c . . . third portion, 64 . . . second lead, 64 a . . . first portion, 64 b . . . second portion, 65 . . . screw member, 70 . .
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Abstract
An electronic controlling unit includes a housing configured to accommodate a power module, an input/output board, and a control board. The housing includes a mounting portion and a ceiling portion opposed to each other with a spacing therebetween in one direction, and four side wall portions located between the mounting portion and the ceiling portion. At least one of the at least four side wall portions is an inclined side wall portion inclined inwardly at an acute angle with respect to the mounting portion.
Description
- The present invention relates to an electronic controlling unit, an electric power steering device, and a vehicle and, more particularly, to an electronic controlling unit which controls driving of an electric motor, an electric power steering device which uses the electronic controlling unit, and a vehicle equipped with the electric power steering device.
- An electronic controlling unit in an electric power steering device controls driving of an electric motor, and includes a power module and a control board. The power module includes a switching element. The control board includes a controller which controls the output current of the power module.
- The electronic controlling unit and the electric motor require reduction in size to flexibly adapt to a vehicle mounting position corresponding to the type of vehicle. To meet this requirement, PTL1 proposes an electric power steering device which employs an electronic controlling unit and an electric motor integrated with each other.
- The electronic controlling unit in the electric power steering device according to
PTL 1 includes a power module, a controlling module, a DC conduction module, and an AC conduction module. The power module includes a switching element. The controlling module controls the output current of the power module. The DC conduction module includes a power terminal block supplied with power from a battery. The AC conduction module includes a motor terminal block which supplies power to the electric motor. These components are accommodated in a rectangular housing. - PTL 1: JP 2010-30489 A
- With the recent sophistication of vehicles such as automobiles, not only an engine but also a variety of electronic components and devices are packed in an engine compartment. Under the circumstances, an electronic controlling unit which controls driving of an electric motor in an electric power steering device requires further reduction in size.
- Since the power module including a switching element generates heat in large quantities, an improvement in its heat radiation performance is also required with the downsizing of the electronic controlling unit.
- The inventor of the present invention made this invention by focusing attention on the fact that the conventional electronic controlling unit has a rectangular housing.
- It is an object of the present invention to provide an electronic controlling unit which can have a relatively small size, an electric power steering device which uses the electronic controlling unit, and a vehicle equipped with the electric power steering device.
- (1) In order to achieve the object, there is provided with an electronic controlling unit comprising: a power module including a switching element; an input/output board including an input connector and an output connector; a control board including a controller configured to control an output current of the power module; and a housing configured to accommodate the power module, the input/output board, and the control board. The housing includes amounting portion and a ceiling portion opposed to each other with a spacing therebetween in one direction, and at least four side wall portions located between the mounting portion and the ceiling portion. At least one of the at least four side wall portions is an inclined side wall portion inclined inwardly at an acute angle with respect to the mounting portion.
- (2) In the electronic controlling unit according to above-described (1), the input/output board and the control board are opposed to each other with a predetermined spacing therebetween in the one direction. The power module includes a sealing member having a square planar shape, a plurality of first leads aligned along one side of two opposite sides of the sealing member, and a plurality of second leads aligned along the other side of the two sides of the sealing member. The first leads are connected to the input/output board. The second leads are connected to the control board. The sealing member is tilted along the inclined side wall portion.
- (3) In the electronic controlling unit according to above-described (1) or (2), the sealing member is connected to the inclined side wall portion directly or indirectly via a heat conducting member.
- (4) In the electronic controlling unit according to any one of above-described (1) to (3), the electronic controlling unit is used to control driving of an electric motor.
- (5) An electric power steering device includes the electronic controlling unit according to above-described (4), the electric motor generates a steering assist force to assist steering operation.
- (6) The present invention provides a vehicle equipped with the electric power steering device according to above-described (5).
- (7) An electronic controlling unit according to an aspect of the present invention includes power modules, an input/output board, a control board, a housing, and a positioning mechanism. The power modules include switching elements. The input/output board includes an input connector and an output connector. The control board includes a controller which controls the output current of each of the power modules. The housing accommodates the power modules, the input/output board, and the control board. The positioning mechanism positions the power modules in the housing.
- (8) In the electronic controlling unit according to above-described (7), preferably, the housing includes side wall portions, and the positioning mechanism includes positioning projections and positioning terminals. The positioning projections are formed inside the side wall portions of the housing. The positioning terminals are provided in the power modules and include fitting holes to be engaged by the positioning projections.
- (9) In the electronic controlling unit according to above-described (7) or (8), preferably, the input/output board and the control board have flat surfaces facing each other with a predetermined spacing between them, and each of the power modules includes a sealing member, a plurality of first leads, a plurality of second leads, and the positioning terminals. The sealing member has a square planar shape. The plurality of first leads are aligned along one side of two opposite sides of the sealing member. The plurality of second leads are aligned along the other side of the two sides of the sealing member. The plurality of first leads are connected to the input/output board. The plurality of second leads are connected to the control board. The positioning terminals are electrically insulated from the first and second leads.
- (10) In the electronic controlling unit according to any one of above-described (7) to (9), the positioning mechanism is preferably configured to position the first leads and the connecting portion of the input/output board relative to each other and position the second leads and the connecting portion of the control board relative to each other.
- (11) An electric power steering device according to an aspect of the present invention includes the electronic controlling unit according to any one of above-described (7) to (10).
- (12) A vehicle according to an aspect of the present invention includes the power steering device according to above-described (11).
- (13) An electronic controlling unit according to an aspect of the present invention includes first and second power modules, an input/output board, a control board, and a housing. Each of the first and second power modules includes a switching element. The input/output board includes an input connector and an output connector. The control board includes a controller which controls the output current of each of the first and second power modules. The housing accommodates the power modules, the input/output board, and the control board. The input/output board and the control board have flat surfaces facing each other with a predetermined spacing between them. Each of the first and second power modules includes a switching element as well as a sealing member, a plurality of first leads, and a plurality of second leads. The sealing member has a square planar shape. The plurality of first leads are aligned along one side of two opposite sides of the sealing member. The plurality of second leads are aligned along the other side of the two sides of the sealing member. The first leads are connected to the input/output board. The second leads are connected to the control board. The respective sealing members of the first and second power modules are spaced apart from each other and from the input/output board and the control board.
- (14) In the electronic controlling unit according to above-described (13), preferably, each of the input/output board and the control board includes first and second sides opposed to each other with a spacing between them in the one direction, the first power module is located closer to the first side of each of the input/output board and the control board, and the second power module is located closer to the second side of each of the input/output board and the control board.
- (15) In the electronic controlling unit according to above-described (13) or (14), preferably, the housing includes first and second side wall portions opposed to each other in the one direction, the sealing member of the first power module is connected to the first side wall portion of the housing directly or via a heat conducting member, and the sealing member of the second power module is connected to the second side wall portion of the housing directly or via a heat conducting member.
- (16) In the electronic controlling unit according to any one of above-described (13) to (15), preferably, the plurality of first leads of the first power module and the plurality of first leads of the second power module include leads arranged in mirror symmetry, in which leads having the same function are opposed to each other in the one direction.
- (17) The electronic controlling unit according to any one of above-described (13) to (16) preferably serves as an electronic controlling unit for an electric motor which controls driving of the electric motor.
- (18) An electric power steering device according to an aspect of the present invention includes the electronic controlling unit according to above-described (17).
- (19) A vehicle according to an aspect of the present invention includes the electric power steering device according to above-described (18).
- The present invention can provide an electronic controlling unit which can have a relatively small size, an electric power steering device which uses the electronic controlling unit, and a vehicle equipped with the electric power steering device.
-
FIG. 1 is a view illustrating the basic structure of an electric power steering device mounted in a vehicle according to the present invention; -
FIG. 2 is a block diagram illustrating the controlling system of a motor controlling device in the electric power steering device illustrated inFIG. 1 ; -
FIG. 3 is an exploded perspective view illustrating the internal arrangement of an electronic controlling unit serving as the motor controlling device according to the present invention; -
FIG. 4 is a perspective view illustrating the outer arrangement of the electronic controlling unit according to the present invention; -
FIG. 5 is a first side view when viewed from a direction indicated by an arrow L1 inFIG. 4 ; -
FIG. 6 is a second side view when viewed from a direction indicated by an arrow L2 inFIG. 4 ; -
FIG. 7 is a perspective view illustrating the power module taken fromFIG. 3 ; -
FIG. 8 is a view when viewed from a direction indicated by an arrow L3 inFIG. 7 ; and -
FIG. 9 is a sectional view illustrating the schematic arrangement of a housing in the electronic controlling unit according to the present invention. - A mode (to be referred to as an embodiment hereinafter) for carrying out the present invention will now be described with reference to the drawings. For the sake of easier viewing,
FIG. 9 does not illustrate electronic components mounted on an input/output board 70 and a control board 80 (both will be described later). -
FIG. 1 is a view illustrating an electric power steering device mounted in a vehicle according an embodiment of the present invention. - Referring to
FIG. 1 ,reference numeral 1 denotes a steering wheel. A steering force generated as the driver operates thesteering wheel 1 is transmitted to asteering shaft 2. The steeringshaft 2 includes aninput shaft 2 a and anoutput shaft 2 b. Theinput shaft 2 a has its one end connected to thesteering wheel 1 and its other end connected to one end of theoutput shaft 2 b via asteering torque sensor 3. - The steering force transmitted to the
output shaft 2 b is further transmitted to alower shaft 5 via a universal joint 4 and to apinion shaft 7 via auniversal joint 6. The steering force transmitted to thepinion shaft 7 is further transmitted to tie rods 9 via asteering gear 8 to turn a steered wheel (not illustrated). Thesteering gear 8 employs a rack-and-pinion system including apinion 8 a connected to thepinion shaft 7 and arack 8 b which meshes with thepinion 8 a. Thesteering gear 8 converts a rotational motion transmitted to thepinion 8 a into a rectilinear motion in the vehicle widthwise direction in therack 8 b. - A
steering assist mechanism 10 which transmits a steering assist force to theoutput shaft 2 b of thesteering shaft 2 is connected to theoutput shaft 2 b of thesteering shaft 2. Thesteering assist mechanism 10 includes a reduction gear 11 and anelectric motor 12. The reduction gear 11 includes, for example, a worm gear mechanism connected to theoutput shaft 2 b. Theelectric motor 12 is implemented in, for example, a three-phase brushless motor which is connected to the reduction gear 11 and produces a steering assist force. - The
steering torque sensor 3 detects a steering torque applied to thesteering wheel 1 and transmitted to theinput shaft 2 a. Thesteering torque sensor 3, for example, converts the steering torque into a rotational angular displacement of a torsion bar (not illustrated) interposed between theinput shaft 2 a and theoutput shaft 2 b. Thesteering torque sensor 3 converts the rotational angular displacement into an angular difference between an input-side angle sensor (not illustrated) placed close to theinput shaft 2 a and an output-side angle sensor (not illustrated) placed close to theoutput shaft 2 b, and detects the angular difference. - The
electric motor 12 is implemented in a three-phase brushless motor and includes motor windings La, Lb, and Lc of three phases: phases A, B, and C which are wound around the slots of a stator, as illustrated inFIG. 2 . The motor windings La, Lb, and Lc of the respective phases have their one-side ends connected to each other in a star connection configuration and their other-side ends connected to amotor controlling device 20 and supplied with motor drive currents Ia, Ib, and Ic, respectively. - The
electric motor 12 includes arotational position sensor 13 a which detects the motor rotational position, as illustrated inFIG. 2 . The value detected by therotational position sensor 13 a is supplied to a motor rotationalangle detection circuit 13, which detects a motor rotational angle θm. - The
motor controlling device 20 receives a DC current from abattery 22 serving as a DC power supply. - The
motor controlling device 20 includes acontrol computing device 31, first and secondmotor drive circuits current cutoff circuits FIG. 2 . Thecontrol computing device 31 computes three-phase voltage command values V1* and V2*. The first and secondmotor drive circuits control computing device 31. The motorcurrent cutoff circuits motor drive circuits electric motor 12. - The
control computing device 31 receives a steering torque detected by thesteering torque sensor 3, a vehicle speed detected by avehicle speed sensor 21, a motor rotational angle θm output from the motor rotationalangle detection circuit 13, a motor angular velocity, and a motor angular acceleration. Thecontrol computing device 31 further receives motor drive currents I1 a to I1 c and I2 a to I2 c output fromcurrent detection circuits electric motor 12. Thecontrol computing device 31 calculates three-phase voltage command values V1* and V2* for the first and secondmotor drive circuits control computing device 31 outputs the calculated three-phase voltage command values V1* and V2* togate drive circuits motor drive circuits - The
control computing device 31 includes ananomaly detection unit 31 a. Theanomaly detection unit 31 a detects open-circuit failure of the upper arm of field-effect transistors (FETs) Q1 to Q6 serving as switching elements which are included in first andsecond inverter circuits electric motor 12. In theanomaly detection unit 31 a, when open-circuit failure and short-circuit failure of the field-effect transistors (FETs) Q1 to Q6 are not detected, anomaly detection signals SAa and SAb having logical value “0” (normal) are output to thegate drive circuits motor drive circuits gate drive circuit motor drive circuit - The first and second
motor drive circuits gate drive circuits second inverter circuits gate drive circuits control computing device 31, and serve as anomaly time current controlling units. The first andsecond inverter circuits gate drive circuits - When the anomaly detection signal SAa received from the
control computing device 31 has logical value “0” (normal), thegate drive circuit 41A outputs three high-level gate signals to the motorcurrent cutoff circuit 33A and a high-level gate signal to apower cutoff circuit 44A. When the anomaly detection signal SAa has logical value “1” (anomalous), thegate drive circuit 41A simultaneously outputs three low-level gate signals to the motorcurrent cutoff circuit 33A to cut off the motor drive currents I1 a to I1 c and outputs a low-level gate signal to thepower cutoff circuit 44A to cut off the battery power. - Similarly, when the anomaly detection signal SAa received from the
control computing device 31 has logical value “0” (normal), thegate drive circuit 41B outputs three high-level gate signals to the motorcurrent cutoff circuit 33B and a high-level gate signal to apower cutoff circuit 44B. When the anomaly detection signal SAa has logical value “1” (anomalous), thegate drive circuit 41B simultaneously outputs three low-level gate signals to the motorcurrent cutoff circuit 33B to cut off the motor drive currents I2 a to I2 c and outputs a low-level gate signal to thepower cutoff circuit 44B to cut off the battery current. - The first and
second inverter circuits battery 22 via anoise filter 43 and thepower cutoff circuits - Each of the first and
second inverter circuits first inverter circuit 42A receive the gate signal output from thegate drive circuit 41A to supply a phase-A motor drive current I1 a, a phase-B motor drive current I1 b, and a phase-C motor drive current I1 c from the intervals between the field-effect transistors of the respective switching arms SAa, SAb, and SAc to the motor windings La, Lb, and Lc of the respective phases of theelectric motor 12 via the motorcurrent cutoff circuit 33A. The field-effect transistors Q1 to Q6 that are included in thesecond inverter circuit 42B receive the gate signal output from thegate drive circuit 41B to supply a phase-A motor drive current I2 a, a phase-B motor drive current I2 b, and a phase-C motor drive current I2 c from the intervals between the field-effect transistors of the respective switching arms SBa, SBb, and SBc to the motor windings La, Lb, and Lc of the respective phases of theelectric motor 12 via the motorcurrent cutoff circuit 33B. - The motor
current cutoff circuit 33A includes three field-effect transistors QA1 to QA3 for current cutoff. The motorcurrent cutoff circuit 33B includes three field-effect transistors QB1 to QB3 for current cutoff. - The configuration of an
electronic controlling unit 50 serving as themotor controlling device 20 will be described below with reference toFIGS. 3 to 9 . - In an embodiment of the present invention, first and second directions orthogonal to each other in the same plane will sometimes be referred to as the X- and Y-directions hereinafter. A third direction perpendicular to the X- and Y-directions will sometimes be referred to as the Z-direction hereinafter.
- The
electronic controlling unit 50 mainly includes first andsecond power modules output board 70, acontrol board 80, and ahousing 90 which accommodates these components, as illustrated inFIG. 3 . - The
first power module 60A mainly includes, for example, the motorcurrent cutoff circuit 33A, thefirst inverter circuit 42A including a plurality of switching elements, and thepower cutoff circuit 44A that are illustrated inFIG. 2 . Thesecond power module 60B mainly includes, for example, the motorcurrent cutoff circuit 33B, thesecond inverter circuit 42B including a plurality of switching elements, and thepower cutoff circuit 44B that are illustrated inFIG. 2 . In other words, the electronic controllingunit 50 according to an embodiment includes duplex first andsecond power modules electric motor 12. - The input/
output board 70 includes a power input connector 71 (seeFIG. 4 ) and a three-phase output connector 72, as well as electrolytic capacitors (CA and CB), coils 73 a and 73 b which form thenoise filter 43, resistors, and electronic components (discrete components) 73 such as a three-terminal regulator, as illustrated inFIG. 3 . - The
power input connector 71 and the three-phase output connector 72 correspond to an input connector and an output connector, respectively, of the present invention. - The
control board 80 includes, for example, acontrol computing device 31 andgate drive devices signal input connector 81, as illustrated inFIG. 3 . Thecontrol computing device 31 serves as a controller which controls the output currents of the first andsecond power modules gate drive device 82A includes thegate drive circuit 41A illustrated inFIG. 2 . Thegate drive device 82B includes thegate drive circuit 41B illustrated inFIG. 2 . Thecontrol board 80 and the input/output board 70 have a multilayer wiring structure including wiring layers in, for example, the front and back surfaces or the front and back surfaces and inner layers. Examples of thecontrol board 80 and the input/output board 70 include a printed circuit board, a ceramic circuit board, and an insert-molded circuit board including an insert base. - The
housing 90 mainly includes acase 91 and acover 92, which form an accommodation unit accommodating, for example, the first andsecond power modules output board 70, and thecontrol board 80, as illustrated inFIG. 3 . Thecase 91 and thecover 92 are made of a conductive metal material such as aluminum die-cast (ADC). - The
case 91 and thecover 92 have a square planar shape when viewed in a plan view, as illustrated inFIGS. 3 to 6 and 9 . Thecase 91 has a recessed configuration including aceiling portion 91 x, fourside wall portions ceiling portion 91 x to surround the center of theceiling portion 91 x, and an opening portion opposed to theceiling portion 91 x. Thecover 92 is mounted to cover the opening portion. Of the fourside wall portions side wall portions side wall portions - The
cover 92 has a planar shape.Boss portions 92 b are formed on the lower surface of thecover 92 to be screwed to the electric motor 12 (to be described later) by screw members. - The
ceiling portion 91 x of thecase 91 forms theceiling portion 90 x of thehousing 90 while the fourside wall portions case 91 form fourside wall portions housing 90. Thecover 92 forms a mountingportion 90 y of thehousing 90. In other words, thehousing 90 includes aceiling portion 90 x and a mountingportion 90 y opposed to each other with a spacing between them in the direction of thickness (Z-direction) of thehousing 90, and fourside wall portions ceiling portion 90 x and the mountingportion 90 y. The accommodation unit surrounded by theceiling portion 90 x, the mountingportion 90 y, and the fourside wall portions second power modules output board 70, and thecontrol board 80. - The first and
second power modules side wall portions case 91 byscrew members 65 from inside, as illustrated inFIG. 3 . - The input/
output board 70 is screwed to theceiling portion 91 x of thecase 91 by screw members 75 from inside. - The
control board 80 is screwed to theceiling portion 91 x of thecase 91 byscrew members 85 from inside. Thecover 92 is screwed to theside wall portions case 91 byscrew members 96 from inside. The input/output board 70 and thecontrol board 80 are opposed to each other with a predetermined spacing between them in the direction of thickness (Z-direction) of the electronic controllingunit 50. - The three-
phase output connector 72 of the input/output board 70 is exposed outside from theside wall portion 91 d of thecase 91, as illustrated inFIGS. 4 and 5 . Thepower input connector 71 of the input/output board 70 and thesignal input connector 81 of thecontrol board 80 are exposed outside from theside wall portion 91 c of thecase 91, as illustrated inFIG. 6 . - Each of the first and
second power modules member 61, a plurality of first leads 63, and a plurality of second leads 64, as illustrated inFIGS. 7 and 8 . Each of the first andsecond power modules - The sealing
member 61 has a square planar shape when viewed in a plan view and is formed in, for example, a rectangle having twolong sides short sides member 61 is made of, for example, an insulating resin or ceramics. The sealingmember 61 of thefirst power module 60A mainly seals, for example, the switching elements that are included in thefirst inverter circuit 42A illustrated inFIG. 2 . The sealingmember 61 of thesecond power module 60B mainly seals, for example, the switching elements that are included in thesecond inverter circuit 42B illustrated inFIG. 2 . - Although not illustrated in detail, each of the pluralities of first and second leads 63 and 64 extends into and out of the sealing
member 61, and includes an internal lead portion located inside the sealingmember 61 and an external lead portion located outside the sealingmember 61. - The plurality of first leads 63 are aligned along one
long side 61 a of the twolong sides member 61 in their external lead portions located outside the sealingmember 61. The plurality of second leads 64 are aligned along the otherlong side 61 b of the twolong sides member 61 in their external lead portions located outside the sealingmember 61. - Each of the pluralities of first and second leads 63 and 64 is bent in a plurality of steps in their external lead portions located outside the sealing
member 61, as illustrated inFIG. 8 . - The external lead portion of each of the plurality of first leads 63 is bent in, for example, three steps and includes a
first portion 63 a, asecond portion 63 b, and athird portion 63 c. Thefirst portion 63 a projects from onelong side 61 a of the sealingmember 61. Thesecond portion 63 b is bent in the direction of thickness of the sealingmember 61 from thefirst portion 63 a. Thethird portion 63 c is bent from thesecond portion 63 b toward the back surface of the sealingmember 61. - The external lead portion of each of the plurality of second leads 64 is bent in, for example, two steps and includes a
first portion 64 a and asecond portion 64 b, as illustrated inFIG. 8 . Thefirst portion 64 a projects from the otherlong side 61 b of the sealingmember 61. Thesecond portion 64 b is bent and tilted from thefirst portion 64 a to the back surface of the sealingmember 61. - The sealing
member 61 includes notchedportions 62 on the two oppositeshort sides FIGS. 7 and 8 . The notchedportions 62 are used to pass the screw members 65 (seeFIG. 3 ) when the first andsecond power modules case 91. - In the first and
second power modules hole electrode 70 s (seeFIG. 9 ) forming part of the wiring of the input/output board 70. Each of the plurality of second leads 64 is electrically, mechanically connected by, for example, soldering to a through-hole electrode 80 s (seeFIG. 9 ) forming part of the wiring of thecontrol board 80. - The plurality of first leads 63 include a
first lead 63 electrically connected to the terminal of thepower input connector 71, and afirst lead 63 electrically connected to the terminal of the three-phase output connector 72, via the wiring of the input/output board 70. The plurality of second leads 64 include asecond lead 64 electrically connected to the terminal of thesignal input connector 81 via the wiring of thecontrol board 80. - The
electric motor 12 includes a motor stator (not illustrated), a motor rotor (not illustrated), acylindrical motor frame 12 d, amotor output shaft 12 a, first mountingflanges 12 b, and second mountingflanges 12 c, as illustrated inFIG. 3 . The motor stator is formed by winding three-phase coils. Themotor frame 12 d includes therotational position sensor 13 a illustrated inFIG. 2 . Themotor output shaft 12 a is connected to the motor stator and projects out of themotor frame 12 d. Thefirst mounting flanges 12 b are placed in the vicinities of atop plate 12 e of themotor frame 12 d placed in correspondence with themotor output shaft 12 a at the opposite position. Thesecond mounting flanges 12 c are formed on the open end portions of themotor frame 12 d from which themotor output shaft 12 a projects and are attached to side of a gear box (not illustrated) including the reduction gear 11. - The
electronic controlling unit 50 is placed such that the cover 92 (mountingportion 90 y) abuts against thetop plate 12 e of theelectric motor 12.Boss portions 95 b formed on thecover 92 are fitted and screwed into the first mountingflanges 12 b by screw members (not illustrated) to attach the electronic controllingunit 50 to theelectric motor 12, as illustrated inFIGS. 3 to 6 . - The procedure of assembly of an
electronic controlling unit 50 will be described below with reference toFIGS. 3 to 9 . - First and
second power modules output board 70, acontrol board 80, acase 91, and acover 92 are provided first. The input/output board 70 includes apower input connector 71, a three-phase output connector 72, electrolytic capacitors CA and CB, coils 73 e and 73 b which form anoise filter 43, resistors, and electronic components (discrete components) 73 such as a three-terminal regulator. Thecontrol board 80 includes electronic components such as gate drive devices (gate drive circuits second power modules signal input connector 81. - The first and
second power modules side wall portions case 91 byscrew members 65 from inside. - The input/
output board 70 is screwed at a position adjacent to the inner wall of theceiling portion 91 x of thecase 91 by screw members 75. The input/output board 70 includes a plurality of screw holes 70 c. In screwing, the screw members 75 are inserted into the screw holes 70 c, as illustrated inFIG. 3 . In screwing the input/output board 70 to theceiling portion 91 x of thecase 91, the distal end portions (third portions 63 c) of the plurality of first leads 63 of each of the first andsecond power modules hole electrodes 70 s formed on the wiring of the input/output board 70, as illustrated in FIG. 9. - The
control board 80 is screwed byscrew members 85 at a position spaced apart from the inner wall of theceiling portion 91 x of thecase 91 in parallel with the input/output board 70. Thecontrol board 80 includes a plurality of screw holes 80 a. In screwing, thescrew members 85 are inserted into the screw holes 80 a. In screwing thecontrol board 80 to theceiling portion 91 x of thecase 91, the distal end portions (second portions 64 b) of the plurality of second leads 64 of each of the first andsecond power modules hole electrodes 80 s formed on the wiring of thecontrol board 80, as illustrated inFIG. 9 . - The distal end portions (
third portions 63 c) of the plurality of first leads 63 of each of the first andsecond power modules hole electrodes 70 s formed on the wiring of the input/output board 70. At the same time, the distal end portions (second portions 64 b) of the plurality of second leads 64 of each of the first andsecond power modules hole electrodes 80 s formed on the wiring of thecontrol board 80. - The
cover 92 is mounted to cover the opening in thecase 91 and screwed to theside wall portions case 91 byscrew members 96 from the outside of thecover 92. Thecover 92 includes a plurality of screw holes 92 a. In screwing, thescrew members 96 are inserted into the screw holes 92 a. With this operation, assembly of anelectronic controlling unit 50 according to an embodiment of the present invention is nearly completed. - In the electronic controlling
unit 50, the input/output board 70 and thecontrol board 80 are opposed to each other with a predetermined spacing between them in the direction of thickness (Z-direction) of the electronic controllingunit 50, as illustrated inFIG. 9 . In an embodiment of the present invention, the input/output board 70 is located closer to theceiling portion 91 x of thecase 91 than thecontrol board 80, and thecontrol board 80 is located closer to thecover 92 than the input/output board 70. - The input/
output board 70 has a planar size smaller than that of thecontrol board 80. The input/output board 70 includes twoopposite sides control board 80 includes twoopposite sides 80 aa and 80 bb. - One
side 70 a of the input/output board 70 is located on the same side as oneside 80 aa of thecontrol board 80 and inside thisside 80 aa. Theother side 70 b of the input/output board 70 is located on the same side as theother side 80 bb of thecontrol board 80 and inside thisside 80 bb. - The
first power module 60A is placed on the side of oneside 70 a and oneside 80 aa of the input/output board 70 and thecontrol board 80, respectively, to traverse oneside 70 a of the input/output board 70. Thesecond power module 60B is placed on the side of theother side 70 b and theother side 80 bb of the input/output board 70 and thecontrol board 80, respectively, to traverse theother side 70 b of the input/output board 70. - The configuration of the electronic controlling
unit 50 according to an embodiment of the present invention will be described in more detail. - The
housing 90 includes fourside wall portions side wall portions side wall portions portion 90 y, as illustrated inFIG. 9 . The twoside wall portions portion 90 y correspond to inclined side wall portions according to the present invention. - In the
first power module 60A, the sealingmember 61 extends along the side wall portion (inclined side wall portion) 90 a, as illustrated inFIG. 9 . In thesecond power module 60B, the sealingmember 61 extends along the side wall portion (inclined side wall portion) 90 b. - In each of the first and
second power modules third portion 63 c of each of the plurality of first leads 63 bent in three steps is inserted into the through-hole electrode 70 s placed on the input/output board 70 and is electrically, mechanically connected to it by soldering, as illustrated inFIG. 9 . - In each of the first and
second power modules second portion 64 b of each of the plurality of second leads 64 bent in two steps is inserted into the through-hole electrode 80 s placed on thecontrol board 80 and is electrically, mechanically connected to it by soldering. - In the
first lead 63 of each of the first andsecond power modules third portion 63 c is bent nearly perpendicularly to the electronic component mounting surface of the input/output board 70 to tilt the first andsecond power modules FIG. 9 . - In the
second lead 64 of each of the first andsecond power modules second portion 64 b is bent nearly perpendicularly to the electronic component mounting surface of thecontrol board 80 to tilt the first andsecond power modules 60A. - In the
first power module 60A, the sealingmember 61 is connected to the side wall portion (inclined side wall portion) 90 a of thehousing 90 directly or via a heat conducting member. In thesecond power module 60B, the sealingmember 61 is connected to the side wall portion (inclined side wall portion) 90 b of thehousing 90 directly or via a heat conducting member. Examples of the heat conducting member include sheet-shaped heat conducting substances and paste-like heat conducting substances such as thermal grease, thermal pastes, silicone grease, and heat sink compounds. - An advantageous effect according to an embodiment of the present invention will be described below.
- As for the conventional electric power steering device, an electronic controlling unit which controls driving of an electric motor has a rectangular housing.
- In contrast to this, as for the electric power steering device according to an embodiment of the present invention, in the
housing 90 of the electronic controllingunit 50 that controls driving of theelectric motor 12, the two oppositeside wall portions side wall portions 90 a to 90 d are configured, as inclined side wall portions, to be inclined at an acute angle θ with respect to the mountingportion 90 y, as illustrated inFIG. 9 . - With the electronic controlling
unit 50 according to an embodiment of the present invention, the volume of the electronic controllingunit 50 can be reduced without changing the thickness of the electronic controllingunit 50 and the footprint (projection area) of the electronic controllingunit 50 when viewed in a plan view. This makes it possible to make the electronic controllingunit 50 smaller than the conventional rectangular electronic controlling unit. This, in turn, makes it possible to provide anelectronic controlling unit 50 which can have a relatively small size, an electric power steering device which uses the electronic controllingunit 50, and a vehicle equipped with the electric power steering device. - The volume of the electronic controlling
unit 50 can be reduced without reducing the area of the mountingportion 90 y, which can be stably attached to theelectric motor 12 while achieving downsizing. - In the electronic controlling
unit 50 according to an embodiment of the present invention, the first andsecond power modules members 61 extend along the side wall portions (inclined side wall portions) 90 a and 90 b. - With the electronic controlling
unit 50 according to an embodiment of the present invention, the degree of freedom of arrangement of other electronic components (discrete components) to be placed between the input/output board 70 and thecontrol board 80 can be set higher than that when a power module is interposed between the input/output board 70 and thecontrol board 80. - In the first and
second power modules unit 50 according to an embodiment of the present invention, the sealingmembers 61 are connected to the side wall portions (inclined side wall portions) 90 a and 90 b directly or indirectly via heat conducting members. - With the electronic controlling
unit 50 according to an embodiment of the present invention, heat generated by the first andsecond power modules housing 90 so that the heat radiation performance of the electronic controllingunit 50 can be improved, compared to the conventional case where a power module is accommodated in the housing without contact. This makes it possible to provide anelectronic controlling unit 50 which can have a relatively small size and a relatively high heat radiation performance, an electric power steering device which uses the electronic controllingunit 50, and a vehicle equipped with the electric power steering device. - Of the four
side wall portions housing 90, the twoside wall portions second power modules housing 90. Hence, the area of heat radiation of a heat radiator including the twoside wall portions unit 50 and the footprint (projection area) of the electronic controllingunit 50 when viewed in a plan view. - In the electronic controlling
unit 50 according to an embodiment of the present invention, each of the plurality of first leads 63 of each of the first andsecond power modules first portion 63 a, asecond portion 63 b, and athird portion 63 c, as illustrated inFIG. 8 . Thefirst portion 63 a projects from the sealingmember 61. Thesecond portion 63 b is bent in the direction of thickness of the sealingmember 61 from thefirst portion 63 a. Thethird portion 63 c is bent from thesecond portion 63 b toward the back surface of the sealingmember 61. Thethird portion 63 c is bent nearly perpendicularly to the electronic component mounting surface of the input/output board 70, as illustrated inFIG. 9 . In each of the first andsecond power modules first portion 64 a and asecond portion 64 b are provided as illustrated inFIG. 8 . Thefirst portion 64 a projects from the sealingmember 61. Thesecond portion 64 b is bent and tilted from thefirst portion 64 a toward the back surface of the sealingmember 61. Thesecond portion 64 b is bent nearly perpendicularly to the electronic component mounting surface of thecontrol board 80, as illustrated inFIG. 9 . - With the electronic controlling
unit 50 according to an embodiment of the present invention, the first andsecond power modules output board 70 and thecontrol board 80 to have a tilt with respect to the input/output board 70 and thecontrol board 80 opposed to each other with a predetermined spacing between them in the Z-direction. - The
third portions 63 c of the first leads 63 are placed nearly perpendicular to the electronic component mounting surface of the input/output board 70. Thus, at the time of assembly of anelectronic controlling unit 50, it is possible to easily insert thethird portions 63 c of the first leads 63 into the through-hole electrodes 70 s of the input/output board 70 and thesecond portions 64 b of the second leads 64 into the through-hole electrodes 80 s of thecontrol board 80, even when the first andsecond power modules output board 70 and thecontrol board 80, as illustrated inFIG. 9 . - The above-described embodiment assumes an
electronic controlling unit 50 including ahousing 90 having fourside wall portions - The above-described embodiment further assumes an
electronic controlling unit 50 including two, first andsecond power modules - The above-described embodiment assumes that the two
side wall portions side wall portions - The present invention has specifically been described based on the above-described embodiment. However, the present invention is not limited to the above-described embodiment and various changes can be made without departing from the spirit of the present invention, as a matter of course.
- For example, windings of a plurality of systems may be applied to one electric motor to drive the winding of each system using an independent power module.
- 1 . . . steering wheel, 2 . . . steering shaft, 2 a . . . input shaft, 2 b . . . output shaft, 3 . . . steering torque sensor, 4 . . . universal joint, 5 . . . lower shaft, 6 . . . universal joint, 7 . . . pinion shaft, 8 . . . steering gear, 8 a . . . pinion, 8 b . . . rack, 9 . . . tie rod, 10 . . . steering assist mechanism, 11 . . . reduction gear, 12 . . . electric motor, 12 a . . . drive shaft, 13 . . . motor rotational angle detection circuit, 20 . . . motor controlling device, 21 . . . vehicle speed sensor, 22 . . . battery, 31 . . . control computing device, 32A . . . first motor drive circuit, 32B . . . second motor drive circuit, 33A . . . motor current cutoff circuit, 33B . . . motor current cutoff circuit, 39A, 39B . . . current detection circuit, 41A, 41B . . . gate drive circuit, 42A, 42B . . . inverter circuit, 43 . . . noise filter, 44A, 44B . . . power cutoff circuit, 50 . . . electronic controlling unit (ECU), 60A . . . first power module, 60B . . . second power module, 61 . . . sealing member, 61 a, 61 b . . . long side, 61 c, 61 d . . . short side, 62 . . . notched portion, 63 . . . first lead, 63 a . . . first portion, 63 b . . . second portion, 63 c . . . third portion, 64 . . . second lead, 64 a . . . first portion, 64 b . . . second portion, 65 . . . screw member, 70 . . . input/output board, 70 a, 70 b . . . side, 71 . . . power input connector (input connector), 73 . . . electronic component (discrete component), 73 a, 73 b . . . coil, 75 . . . screw member, 80 . . . control board, 80 aa, 80 bb . . . side, 82A, 82B . . . gate drive device, 90 . . . housing (accommodation body), 90 a, 90 b, 90 c, 90 d . . . side wall portion, 90 x . . . ceiling portion, 90 y . . . mounting portion 91 . . . case, 91 a, 91 b, 91 c, 91 d . . . side wall portion, 91 x . . . ceiling portion, 92 . . . cover, Q1 to Q6, QA1 to QA3, QB1 to QB3 . . . field-effect transistor
Claims (7)
1. An electronic controlling unit comprising:
a power module including a switching element;
an input/output board including an input connector and an output connector;
a control board including a controller configured to control an output current of the power module; and
a housing configured to accommodate the power module, the input/output board, and the control board,
wherein the housing includes a mounting portion and a ceiling portion opposed to each other with a spacing therebetween in one direction, and at least four side wall portions located between the mounting portion and the ceiling portion, and
at least one of the at least four side wall portions is an inclined side wall portion inclined inwardly at an acute angle with respect to the mounting portion.
2. The electronic controlling unit according to claim 1 , wherein
the input/output board and the control board are opposed to each other with a predetermined spacing therebetween in the one direction,
the power module includes a sealing member having a square planar shape, a plurality of first leads aligned along one side of two opposite sides of the sealing member, and a plurality of second leads aligned along the other side of the two sides of the sealing member,
the first leads are connected to the input/output board,
the second leads are connected to the control board, and
the sealing member is tilted along the inclined side wall portion.
3. The electronic controlling unit according to claim 1 , wherein the sealing member is connected to the inclined side wall portion directly or indirectly via a heat conducting member.
4. The electronic controlling unit according to claim 1 , wherein the electronic controlling unit is used to control driving of an electric motor.
5. An electric power steering device comprising the electronic controlling unit according to claim 4 , wherein the electric motor generates a steering assist force to assist steering operation.
6. A vehicle comprising the electric power steering device according to claim 5 .
7. The electronic controlling unit according to claim 2 , wherein the sealing member is connected to the inclined side wall portion directly or indirectly via a heat conducting member.
Applications Claiming Priority (17)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-258299 | 2013-12-13 | ||
JP2013258299A JP5915635B2 (en) | 2013-12-13 | 2013-12-13 | Electronic control unit, electric power steering apparatus, vehicle, and manufacturing method of electronic control unit |
JP2013-258298 | 2013-12-13 | ||
JP2013258301A JP5983591B2 (en) | 2013-12-13 | 2013-12-13 | Electronic control unit, electric power steering apparatus and vehicle |
JP2013258300A JP5979127B2 (en) | 2013-12-13 | 2013-12-13 | Electronic control unit, electric power steering apparatus and vehicle |
JP2013258298A JP5900475B2 (en) | 2013-12-13 | 2013-12-13 | Electronic control unit, electric power steering apparatus and vehicle |
JP2013-258300 | 2013-12-13 | ||
JP2013-258301 | 2013-12-13 | ||
JP2013263959A JP6075282B2 (en) | 2013-12-20 | 2013-12-20 | Electronic control unit, electric power steering apparatus and vehicle |
JP2013263958A JP5967069B2 (en) | 2013-12-20 | 2013-12-20 | Electronic control unit, electric power steering apparatus and vehicle |
JP2013-263960 | 2013-12-20 | ||
JP2013-263959 | 2013-12-20 | ||
JP2013-263958 | 2013-12-20 | ||
JP2013-263957 | 2013-12-20 | ||
JP2013263957A JP2015120367A (en) | 2013-12-20 | 2013-12-20 | Electronic control unit, electric power steering device and vehicle |
JP2013263960A JP2015120368A (en) | 2013-12-20 | 2013-12-20 | Electronic control unit, electric power steering device and vehicle |
PCT/JP2014/006199 WO2015087553A1 (en) | 2013-12-13 | 2014-12-12 | Electronic control unit, electric power steering device, and vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160362127A1 true US20160362127A1 (en) | 2016-12-15 |
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Application Number | Title | Priority Date | Filing Date |
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US15/103,116 Abandoned US20160355210A1 (en) | 2013-12-13 | 2014-12-12 | Electronic Control Unit, Electric Power Steering Device, and Vehicle |
US15/103,496 Expired - Fee Related US9944312B2 (en) | 2013-12-13 | 2014-12-12 | Electronic control unit, electric power steering device, and vehicle |
US15/103,035 Abandoned US20160362127A1 (en) | 2013-12-13 | 2014-12-12 | Electronic Controlling Unit, Electric Power Steering Device, and Vehicle |
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Application Number | Title | Priority Date | Filing Date |
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US15/103,116 Abandoned US20160355210A1 (en) | 2013-12-13 | 2014-12-12 | Electronic Control Unit, Electric Power Steering Device, and Vehicle |
US15/103,496 Expired - Fee Related US9944312B2 (en) | 2013-12-13 | 2014-12-12 | Electronic control unit, electric power steering device, and vehicle |
Country Status (4)
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---|---|
US (3) | US20160355210A1 (en) |
EP (3) | EP3082245A4 (en) |
CN (3) | CN105813921B (en) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10800444B2 (en) | 2015-09-07 | 2020-10-13 | Hitachi Automotive Systems, Ltd. | Electric driving device and electric power steering device |
US11821423B2 (en) | 2020-07-20 | 2023-11-21 | Hitachi Industrial Equipment Systems Co., Ltd. | Scroll compressor with inclined wall surface extending from the dust wrap |
US20230402951A1 (en) * | 2022-06-09 | 2023-12-14 | Hyundai Motor Company | Motor driving apparatus |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6083428B2 (en) * | 2014-12-16 | 2017-02-22 | トヨタ自動車株式会社 | Electric power steering device for vehicle |
EP3131198B1 (en) * | 2015-08-10 | 2022-06-08 | Goodrich Actuation Systems Limited | Control strategy of a dual lane fault tolerant permanent magnet motor to reduce drag torque under fault condition |
US10566879B2 (en) * | 2015-09-14 | 2020-02-18 | Renesas Electronics Corporation | Electronic device |
JP6888609B2 (en) * | 2016-03-04 | 2021-06-16 | 日本電産株式会社 | Power converter, motor drive unit and electric power steering device |
WO2017150639A1 (en) | 2016-03-04 | 2017-09-08 | 日本電産株式会社 | Power conversion device, motor drive unit, electric power steering device, and relay module |
JP6680054B2 (en) * | 2016-04-06 | 2020-04-15 | 株式会社デンソー | Drive device and electric power steering device using the same |
JP6940358B2 (en) | 2017-09-29 | 2021-09-29 | 日本電産エレシス株式会社 | Circuit board, motor drive and electric power steering |
DE102017223631A1 (en) * | 2017-12-21 | 2019-06-27 | Robert Bosch Gmbh | Inverter for an electric machine |
DE102018200480A1 (en) | 2018-01-12 | 2019-07-18 | Mahle International Gmbh | Control device for driving an electric motor |
JP6907992B2 (en) * | 2018-04-10 | 2021-07-21 | 株式会社デンソー | Drive unit and drive unit |
KR101934992B1 (en) * | 2018-07-13 | 2019-04-05 | (주)엠에스정밀 | Zero start system of construction vehicle |
KR101934993B1 (en) * | 2018-07-13 | 2019-01-03 | (주)엠에스정밀 | Automatic deceleration system of construction vehicle |
KR101939794B1 (en) * | 2018-07-13 | 2019-01-17 | (주)엠에스정밀 | Safety system to prevent sudden braking of construction vehicle |
CN109068475B (en) * | 2018-09-07 | 2023-11-10 | 英迪迈智能驱动技术无锡股份有限公司 | PCB layout structure for cylindrical motor |
JP6608555B1 (en) * | 2019-05-17 | 2019-11-20 | 三菱電機株式会社 | DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE |
DE102020202364A1 (en) * | 2020-02-25 | 2021-08-26 | Robert Bosch Gesellschaft mit beschränkter Haftung | Control device, in particular steering control device |
WO2021176934A1 (en) | 2020-03-05 | 2021-09-10 | 富士電機株式会社 | Power conversion device |
JP6955047B2 (en) * | 2020-03-31 | 2021-10-27 | 本田技研工業株式会社 | Power control unit |
CN113923936B (en) * | 2021-08-30 | 2023-08-25 | 国网安徽省电力有限公司枞阳县供电公司 | Power electronic module and power electronic component packaging substrate |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020118511A1 (en) * | 2001-02-28 | 2002-08-29 | Dujari Prateek J. | Heat dissipation device |
US7021418B2 (en) * | 2004-02-02 | 2006-04-04 | Mitsubishi Denki Kabushiki Kaisha | Electric power steering apparatus |
US7357216B2 (en) * | 2004-03-15 | 2008-04-15 | Nsk Ltd. | Electric power steering apparatus |
US7488184B2 (en) * | 2006-06-22 | 2009-02-10 | Omron Corporation | Electronic equipment and method of manufacturing the electronic equipment |
US7886865B2 (en) * | 2006-04-11 | 2011-02-15 | Nsk Ltd. | Electric power steering apparatus |
US8339801B2 (en) * | 2008-01-25 | 2012-12-25 | Mitsubishi Electric Corporation | Electric power steering apparatus |
Family Cites Families (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2880878B2 (en) | 1993-06-15 | 1999-04-12 | 九州日本電気株式会社 | Vertical surface-mount resin-encapsulated semiconductor device |
GB2295590B (en) * | 1994-11-30 | 1999-01-20 | Nsk Ltd | Electric power steering apparatus |
JP3538944B2 (en) | 1995-03-24 | 2004-06-14 | 株式会社デンソー | Electric power steering device |
SE517455C2 (en) * | 1999-12-15 | 2002-06-11 | Ericsson Telefon Ab L M | Power transistor module, power amplifier and method of manufacture thereof |
JP2002119068A (en) | 2000-10-04 | 2002-04-19 | Denso Corp | Inverter device for power |
JP2002246537A (en) | 2001-02-20 | 2002-08-30 | Denso Corp | Electronic device |
JP2003309384A (en) * | 2002-04-17 | 2003-10-31 | Denso Corp | Current-switching circuit device and circuit device for electric power steering |
JP3716231B2 (en) | 2002-06-19 | 2005-11-16 | 三菱電機株式会社 | Electric power steering circuit device and manufacturing method thereof |
JP2004079776A (en) | 2002-08-19 | 2004-03-11 | Yutaka Denki Seisakusho:Kk | Method for mounting printed wiring board |
JP3692108B2 (en) | 2002-10-01 | 2005-09-07 | 三菱電機株式会社 | Motor device for electric power steering |
US20050253233A1 (en) * | 2004-04-28 | 2005-11-17 | Takayuki Murai | Power module and electric transportation apparatus incorporating the same |
JP4471752B2 (en) | 2004-07-06 | 2010-06-02 | 日立オートモティブシステムズ株式会社 | Electric power steering control device and electric power steering system |
JP5067159B2 (en) * | 2005-07-11 | 2012-11-07 | 日本精工株式会社 | Electric power steering device |
KR100646404B1 (en) | 2005-10-26 | 2006-11-14 | 주식회사 만도 | Electronic control unit and electric power steering apparatus including same |
JP2007123644A (en) * | 2005-10-31 | 2007-05-17 | Mitsubishi Electric Corp | Power semiconductor device |
JP4396626B2 (en) | 2005-12-14 | 2010-01-13 | 株式会社デンソー | Power converter |
JP2007167793A (en) | 2005-12-22 | 2007-07-05 | Keiji Furukawa | Deodorizing apparatus |
US20070152503A1 (en) * | 2005-12-30 | 2007-07-05 | Kowalick Thomas M | Vehicle connector lockout apparatus and method of using same |
KR101019341B1 (en) * | 2006-04-11 | 2011-03-07 | 닛본 세이고 가부시끼가이샤 | Electric power steering device and method of assembling the same |
JP2008066696A (en) | 2006-08-10 | 2008-03-21 | Denso Corp | Semiconductor manufacturing system and manufacturing method of semiconductor |
JP2008092632A (en) * | 2006-09-29 | 2008-04-17 | Fuji Electric Holdings Co Ltd | Inverter |
JP5168546B2 (en) | 2007-04-16 | 2013-03-21 | 株式会社ジェイテクト | Vehicle steering system |
JP4385058B2 (en) * | 2007-05-07 | 2009-12-16 | 三菱電機株式会社 | Electronic control unit |
JP2009119957A (en) * | 2007-11-13 | 2009-06-04 | Mitsubishi Electric Corp | Electronic control device and its manufacturing method |
JP2009132174A (en) | 2007-11-28 | 2009-06-18 | Mitsubishi Electric Corp | Electric power steering apparatus |
JP5250329B2 (en) | 2008-07-30 | 2013-07-31 | 日立オートモティブシステムズ株式会社 | Electric power steering control device and electric power steering device |
JP5114350B2 (en) | 2008-09-12 | 2013-01-09 | 株式会社日立産機システム | Inverter device |
JP5171520B2 (en) * | 2008-09-30 | 2013-03-27 | 日立オートモティブシステムズ株式会社 | Power converter |
JP2010105639A (en) | 2008-10-31 | 2010-05-13 | Nsk Ltd | Electric power steering device |
JP5191925B2 (en) * | 2009-02-26 | 2013-05-08 | 積水樹脂株式会社 | Laminated circuit board with heat dissipation pattern and heat dissipation pattern forming method |
JP2010288328A (en) | 2009-06-09 | 2010-12-24 | Mitsubishi Electric Corp | Electronic controller |
JP5516066B2 (en) * | 2009-06-24 | 2014-06-11 | 株式会社デンソー | Drive device |
JP5365872B2 (en) | 2009-06-24 | 2013-12-11 | 株式会社デンソー | Drive device |
JP4998836B2 (en) | 2009-09-30 | 2012-08-15 | 株式会社デンソー | Control device for multi-phase rotating machine and electric power steering device using the same |
JP5241769B2 (en) | 2010-05-12 | 2013-07-17 | 三菱電機株式会社 | Electric power steering motor |
JP5574172B2 (en) | 2010-07-14 | 2014-08-20 | 株式会社ジェイテクト | Control device |
JP5408502B2 (en) * | 2010-09-06 | 2014-02-05 | 株式会社デンソー | Electronic control unit |
JP5610284B2 (en) | 2010-09-28 | 2014-10-22 | 日本電産シンポ株式会社 | Heat dissipation structure |
JP5338804B2 (en) | 2010-12-28 | 2013-11-13 | 株式会社デンソー | DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE USING THE SAME |
JP5722674B2 (en) | 2011-03-22 | 2015-05-27 | 日立オートモティブシステムズ株式会社 | Drive control device for electric actuator |
JP5563513B2 (en) | 2011-04-14 | 2014-07-30 | 日立オートモティブシステムズステアリング株式会社 | Electric power steering device |
JP5574187B2 (en) | 2011-05-11 | 2014-08-20 | 株式会社デンソー | Drive device |
JP2013014197A (en) | 2011-07-01 | 2013-01-24 | Jtekt Corp | Electronic control device and vehicle steering apparatus |
EP2757665B1 (en) * | 2011-09-12 | 2017-03-01 | Mitsubishi Electric Corporation | Electric drive device |
JP2013065696A (en) | 2011-09-16 | 2013-04-11 | Omron Automotive Electronics Co Ltd | Motor controller |
JP2013065695A (en) | 2011-09-16 | 2013-04-11 | Omron Automotive Electronics Co Ltd | Motor control device |
JP2013091474A (en) | 2011-10-27 | 2013-05-16 | Nsk Ltd | Electric power steering apparatus |
JP2013103534A (en) * | 2011-11-10 | 2013-05-30 | Honda Elesys Co Ltd | Electronic control unit for electric power steering |
JP2013103535A (en) | 2011-11-10 | 2013-05-30 | Honda Elesys Co Ltd | Electronic control unit for electric power steering |
JP5518107B2 (en) | 2012-01-25 | 2014-06-11 | 三菱電機株式会社 | Electric power steering device |
JP5752276B2 (en) * | 2012-01-25 | 2015-07-22 | 三菱電機株式会社 | Drive unit-integrated rotating electrical machine |
JP5373949B1 (en) | 2012-08-24 | 2013-12-18 | 三菱電機株式会社 | Electric power steering device |
CN202935424U (en) | 2012-11-16 | 2013-05-15 | 联创汽车电子有限公司 | Heat radiation structure of electronic control unit in electric power steering system |
JP6117577B2 (en) * | 2013-03-15 | 2017-04-19 | 日立オートモティブシステムズ株式会社 | Electronic control unit |
US9660244B2 (en) * | 2013-09-06 | 2017-05-23 | Johnson Controls Technology Company | System and method for establishing connections of a battery module |
JP6117661B2 (en) * | 2013-09-19 | 2017-04-19 | 日立オートモティブシステムズ株式会社 | Electronic control unit |
-
2014
- 2014-12-12 CN CN201480067831.9A patent/CN105813921B/en not_active Expired - Fee Related
- 2014-12-12 US US15/103,116 patent/US20160355210A1/en not_active Abandoned
- 2014-12-12 EP EP14870452.1A patent/EP3082245A4/en not_active Withdrawn
- 2014-12-12 CN CN201480067602.7A patent/CN105829189B/en not_active Expired - Fee Related
- 2014-12-12 WO PCT/JP2014/006201 patent/WO2015087555A1/en active Application Filing
- 2014-12-12 US US15/103,496 patent/US9944312B2/en not_active Expired - Fee Related
- 2014-12-12 EP EP14869924.2A patent/EP3081457B1/en not_active Not-in-force
- 2014-12-12 EP EP14869940.8A patent/EP3082232B1/en not_active Not-in-force
- 2014-12-12 WO PCT/JP2014/006200 patent/WO2015087554A1/en active Application Filing
- 2014-12-12 CN CN201480061987.6A patent/CN105722743B/en not_active Expired - Fee Related
- 2014-12-12 US US15/103,035 patent/US20160362127A1/en not_active Abandoned
- 2014-12-12 WO PCT/JP2014/006199 patent/WO2015087553A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020118511A1 (en) * | 2001-02-28 | 2002-08-29 | Dujari Prateek J. | Heat dissipation device |
US7021418B2 (en) * | 2004-02-02 | 2006-04-04 | Mitsubishi Denki Kabushiki Kaisha | Electric power steering apparatus |
US7357216B2 (en) * | 2004-03-15 | 2008-04-15 | Nsk Ltd. | Electric power steering apparatus |
US7886865B2 (en) * | 2006-04-11 | 2011-02-15 | Nsk Ltd. | Electric power steering apparatus |
US7488184B2 (en) * | 2006-06-22 | 2009-02-10 | Omron Corporation | Electronic equipment and method of manufacturing the electronic equipment |
US8339801B2 (en) * | 2008-01-25 | 2012-12-25 | Mitsubishi Electric Corporation | Electric power steering apparatus |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10800444B2 (en) | 2015-09-07 | 2020-10-13 | Hitachi Automotive Systems, Ltd. | Electric driving device and electric power steering device |
US11821423B2 (en) | 2020-07-20 | 2023-11-21 | Hitachi Industrial Equipment Systems Co., Ltd. | Scroll compressor with inclined wall surface extending from the dust wrap |
US20230402951A1 (en) * | 2022-06-09 | 2023-12-14 | Hyundai Motor Company | Motor driving apparatus |
Also Published As
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EP3082232B1 (en) | 2019-04-10 |
EP3082245A1 (en) | 2016-10-19 |
US20160355210A1 (en) | 2016-12-08 |
CN105813921A (en) | 2016-07-27 |
EP3082245A4 (en) | 2017-03-22 |
US9944312B2 (en) | 2018-04-17 |
CN105813921B (en) | 2018-01-05 |
EP3081457B1 (en) | 2019-04-10 |
CN105829189A (en) | 2016-08-03 |
WO2015087554A1 (en) | 2015-06-18 |
CN105722743A (en) | 2016-06-29 |
WO2015087555A1 (en) | 2015-06-18 |
EP3081457A4 (en) | 2017-06-07 |
CN105722743B (en) | 2018-01-30 |
EP3082232A4 (en) | 2017-10-18 |
WO2015087553A1 (en) | 2015-06-18 |
EP3082232A1 (en) | 2016-10-19 |
US20160311462A1 (en) | 2016-10-27 |
EP3081457A1 (en) | 2016-10-19 |
CN105829189B (en) | 2018-01-30 |
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