EP2662568B1 - Appareil de pompe électrique - Google Patents

Appareil de pompe électrique Download PDF

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Publication number
EP2662568B1
EP2662568B1 EP12732411.9A EP12732411A EP2662568B1 EP 2662568 B1 EP2662568 B1 EP 2662568B1 EP 12732411 A EP12732411 A EP 12732411A EP 2662568 B1 EP2662568 B1 EP 2662568B1
Authority
EP
European Patent Office
Prior art keywords
motor
electric system
failure
failure detection
pump apparatus
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.)
Not-in-force
Application number
EP12732411.9A
Other languages
German (de)
English (en)
Other versions
EP2662568A4 (fr
EP2662568A1 (fr
Inventor
Tsutomu Hibi
Fukami Imai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JTEKT Corp
Original Assignee
JTEKT Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Publication of EP2662568A1 publication Critical patent/EP2662568A1/fr
Publication of EP2662568A4 publication Critical patent/EP2662568A4/fr
Application granted granted Critical
Publication of EP2662568B1 publication Critical patent/EP2662568B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/007—General arrangements of parts; Frames and supporting elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/51—Bearings for cantilever assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/10—Voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/60—Prime mover parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/86—Detection

Definitions

  • the present invention relates to an electrical pump apparatus which is to be mounted on a vehicle.
  • an electrical pump apparatus In a vehicle provided with a so-called idling stop function which, when the vehicle is temporarily stopped, automatically stops an engine, conventionally, an oil pressure supply to a transmission and the like is ensured even in the case of idling stop, by a use of an electrical pump apparatus.
  • Such an electrical pump apparatus is mounted in a limited space of a vehicle. Therefore, an electrical pump apparatus is strongly requested to be miniaturized.
  • an electrical pump apparatus has been proposed in which a pump that generates an oil pressure, a motor that drives the pump, and a control device that controls the operation of the motor are housed in a common housing to be integrated with one another, thereby causing the electrical pump apparatus to be miniaturized.
  • a pump apparatus with the features of the preamble of claim 1 is disclosed in document JP 2010 112330 A .
  • a control device is provided with a failure detection function.
  • a control device has a microcomputer for controlling the operation of a motor, and the microcomputer detects the values of the current and voltage supplied to the motor. When the detected current and voltage values become an impossible or discontinuous value, the microcomputer determines that a failure occurs, and informs the driver that an electrical pump apparatus breaks down. From documents US 2006/0222527 A1 and US 7,508,149 B2 an electric pump and an oil pump system with a pump, a motor and a control device have become known, respectively.
  • the invention has been conducted in order to solve the problem. It is an object of the invention to provide an electrical pump apparatus in which a situation where a failure detection circuit becomes inoperative before detection of a failure of an electric system can be avoided, and the certainty of failure detection can be enhanced.
  • an electrical pump apparatus comprising: a pump which is configured to generate an oil pressure; a motor which is configured to drive the pump; a control device which is configured to control an operation of the motor; and a housing which houses the pump, the motor, and the control device, and which has an attaching portion to be attached to a vehicle body, a failure detection circuit which is configured to detect a failure of an electric system that electrically connects the motor with an electric power supply is disposed on a circuit board of the control device, and the failure detection circuit is placed on the circuit board to be higher in a direction of gravity than a lowest water level at which flooding in the housing causes the electric system to break down.
  • the failure detection circuit is placed so as to be higher in the direction of gravity than the lowest water level at which a failure of the electric system occurs.
  • the failure detection circuit is placed in the higher side in the direction of gravity. Even in the case where a failure of the electric system does not occur, therefore, adhesion of rainwater or the like to the part of the electric system easily occurs in advance of adhesion to the failure detection circuit.
  • the failure detection circuit Before the failure detection circuit becomes unable to detect a failure, consequently, the part of the electric system deteriorates and breaks down. As a result, the failure detection circuit can detect more surely a failure of the electric system, and the certainty of failure detection in the system can be enhanced.
  • the attaching portion may be formed so that, in a state where the attaching portion is attached to the vehicle body, the circuit board is perpendicular to a horizontal direction.
  • the failure detection circuit is placed while being largely upward separated in the direction of gravity from the lowest water level at which a short circuit of the electric system occurs. Therefore, it is possible to surely prevent the failure detection circuit from being submerged before a short circuit occurs in the electric system.
  • the failure detection circuit may be placed to be higher than a range of 1/3 from a lower end of the circuit board in the direction of gravity. According to the configuration, it is possible to preferably prevent the failure detection circuit from being submerged before a failure of the electric system is detected.
  • the attaching portion may be formed so that, in a state where the attaching portion is attached to the vehicle body, the circuit board is in a horizontal direction.
  • the failure detection circuit is mounted on an upper surface of the circuit board, whereby the circuit can be placed to be higher in the direction of gravity than the lowest water level.
  • the electrical pump apparatus may further comprise: a current detecting means which is configured to detect a current supplied to the motor, and the failure detection circuit may detect the failure of the electric system based on the current detected by the current detecting unit. According to the configuration, a failure of the electric system can be easily detected by a simple configuration.
  • the electrical pump apparatus may further comprise: a voltage detecting means which is configured to detect a voltage applied to the motor, and the failure detection circuit may detect the failure of the electric system based on the voltage detected by the voltage detecting unit. According to the configuration, a failure of the electric system can be easily detected by a simple configuration.
  • an electrical pump apparatus in which a situation where a failure detection circuit becomes inoperative before detection of a failure of an electric system can be avoided, and the certainty of failure detection can be enhanced.
  • Embodiments 1 and 2 in which the invention is embodied as an electrical pump apparatus that is to be mounted on a vehicle to supply an oil pressure to a transmission and the like will be described with reference to the drawings.
  • an electrical pump apparatus 1 includes a housing 2 which is formed into an approximately cylindrical shape.
  • a pump 3 that generates an oil pressure
  • a motor 4 that drives the pump 3
  • a control device 5 that controls the operation of the motor 4 are integrally housed.
  • a one axial end side (the left side in Fig. 1 ) of the housing 2 is referred to as the front side
  • the other axial end side is referred to as the rear side.
  • the housing 2 includes: an approximately annular pump case 11; a pump plate 12 which is placed in front of the pump case 11; a cylindrical motor case 13 which is placed in rear of the pump case 11; and a cover 14 which closes a rear opening end of the motor case 13.
  • the pump case 11 and the pump plate 12 are made of a metal material, and the motor case 13 and the cover 14 are made of a resin material.
  • the pump case 11, the pump plate 12, and the motor case 13 are coupled to one another by bolts 15, and the cover 14 is fixed to the motor case 13 by means of welding (vibration welding or the like).
  • a trochoid pump (internal gear pump) is employed as the pump 3.
  • a brushless motor of the sensorless type in which a rotation sensor for detecting the rotation position of the rotor is not disposed is employed as the motor 4 which is the driving source for the pump 3, and rotated based on a three phase (U, V, W) driving electric power which is supplied from the control device 5.
  • the pump 3 includes an outer gear 21 in which a tooth portion is formed on the inner periphery, and an inner gear 22 in which a tooth portion is formed on the outer periphery.
  • the outer gear 21 is rotatably housed in a housing hole 23 formed in the middle of the pump case 11, and the inner gear 22 is placed on the side of the inner periphery of the outer gear 21.
  • a suction port 24 which is used for sucking hydraulic oil into a gap between the outer gear 21 and the inner gear 22, and a discharge port (not shown) which is used for discharging the hydraulic oil are formed in the pump plate 12 which closes the front end of the housing hole 23.
  • O-rings 16, 17 are interposed between the pump case 11 and the pump plate 12, and between the pump case 11 and the motor case 13, respectively.
  • the cover 14 is welded to the motor case 13. Therefore, the portion other than a region through which the hydraulic oil in the housing 2 is introduced is liquid-tightly sealed, and rainwater or the like is prevented from entering the portion from the outside.
  • a cylindrical supporting portion 25 which is smaller in diameter than the motor case 13 that rearward projects is formed coaxially with the housing hole 23.
  • an output shaft 26 of the motor 4 which functions as a driving shaft of the pump 3 is passed through in a state where the output shaft projects into the housing hole 23, and cantilever supported by a bearing device 27 which is disposed in a rear portion of the supporting portion 25.
  • the bearing device 27 is configured by two rolling bearings which are anteroposteriorly adjacent to each other.
  • the inner gear 22 is integrally rotatably coupled to the front end of the output shaft 26.
  • a sealing member 28 for preventing the hydraulic oil from leaking from the housing hole 23 toward the motor case 13 is disposed between a portion of the pump case 11 which is more forward than the supporting portion 25, and the output shaft 26.
  • the motor 4 includes a rotor 31 having the output shaft 26, and a stator 32 which is fixed to the inner periphery of the motor case 13.
  • the rotor 31 has a rotor core 34 which is fixed to the rear end of the output shaft 26, and magnets 35 which are fixed to the rotor core 34.
  • the rotor core 34 is formed into a bottomed cylindrical shape which radially extends from the rear end of the output shaft 26, and which surrounds the supporting portion 25, and integrally rotatably coupled to the rear end of the output shaft 26.
  • the magnets 35 are fixed to the outer peripheral surface of the rotor core 34 so as to be opposed to the stator 32.
  • the stator 32 includes: a stator core 39 consisting of a cylinder portion 37 which is annularly formed, and teeth portions 38 which project radially inward from the cylinder portion 37; and three-phase motor coils 41 which are wound around the teeth portions 38 through an insulator 40, respectively.
  • a pedestal portion 42 which extends from the rear end of the cylinder portion 37, and to which the control device 5 is fixed is formed in the insulator 40.
  • a power IC chip 52 which constitutes a driving circuit 71 for supplying a driving electric power to the motor coils 41, and a control IC chip 53 which constitutes a microcomputer 72 for controlling the driving circuit 71 are mounted on a circuit board (printed circuit board) 51 of the control device 5.
  • the control device 5 is fastened to the pedestal portion 42 of the insulator 40 by a plurality (in the embodiment, six) of screws 54a to 54f, so that the control device is fixed to the rear side of the motor 4.
  • connection end portions 55 of the motor coils 41 of the respective phases are clampingly held between the circuit board 51 and the insulator 40, whereby the portions are electrically connected to the control device 5.
  • lands 57 made of a conductive material are disposed on the inner peripheral surfaces of through holes 56 which are placed in the vicinity of the power IC chip 52, and through which three screws 54c, 54d, 54e (in Fig. 1 , only the screw 54d is shown) are passed, respectively.
  • the connection end portions 55 of the motor coils 41 are clampingly held between the circuit board 51 and the insulator 40, and in contact with the lands 57, whereby the portions are electrically connected to the control device 5.
  • the control device 5 is connected to an on-vehicle power supply (battery) 59 through a connector portion 58 formed on the motor case 13.
  • the electrical pump apparatus 1 is attached to the vehicle body 61 so that the circuit board 51 is perpendicular to the horizontal direction.
  • attaching portions 63 which project to the radially outer side of the pump case 11, and which have bolt holes 62 are formed in the pump plate 12.
  • the attaching portions 63 are formed so that, when fastening bolts (not shown) are passed through the bolt holes 62, and the electrical pump apparatus 1 is attached to the vehicle body 61, the circuit board 51 is in a state where the board is perpendicular to the horizontal direction, i.e., parallel to the direction of gravity.
  • the three-phase driving electric power is supplied from the control device 5 to the motor 4, and the rotor 31 (output shaft 26) is rotated. Then, the inner gear 22 which is coupled to the output shaft 26 is rotated, whereby the pump 3 is driven and the oil pressure is supplied to the transmission and the like which are not shown.
  • the control device 5 includes: the driving circuit 71 (power IC chip 52) which supplies the three-phase driving electric power to the motor coils 41u, 41v, 41w; and the microcomputer 72 (control IC chip 53) which outputs a motor control signal to the driving circuit 71 to drive the motor 4.
  • the control device 5 supplies the three-phase driving electric power to the motor 4, by performing the 120-degree rectangular-wave conduction on the motor coils 41u, 41v, 41w of the respective phases.
  • a well-known PWM inverter in which, while using a pair of series connected switching elements as a basic unit (switching arm), three switching arms corresponding to the motor coils 41u, 41v, 41w of the respective phases are connected in parallel is used in the driving circuit 71.
  • the motor control signal output from the microcomputer 72 defines the ON/OFF states (the duty ratios of the switching arms of the respective phases) of the switching elements of the respective phases constituting the driving circuit.
  • the driving circuit 71 operates in response to the input of the motor control signal to supply the three-phase driving electric power to the motor.
  • Voltages sensors 73u, 73v, 73w functioning as a voltage detecting means which detects the terminal voltages Vu, Vv, Vw of the motor coils 41u, 41v, 41w are connected to the microcomputer 72.
  • the microcomputer 72 estimates the rotation position (rotation angle) of the rotor 31 based on the induced voltages (counter electromotive forces) of the motor coils 41 which are detected by the voltages sensors 73u, 73v, 73w. Specifically, timings (zero cross points) when the induced voltages become a reference voltage are detected, thereby estimating the rotation position of the rotor 31.
  • the microcomputer 72 determines a conduction pattern which is a combination of switching elements that are to be set to the ON state in accordance with the estimated rotation position of the rotor 31, i.e., a combination of voltages that are to be applied to the motor coils 41u, 41v, 41w.
  • a current sensor 74 functioning as a current detecting means which detects an actual current value I that is flown to the motor 4, and a higher level ECU which controls the operation of the transmission are connected to the microcomputer 72.
  • the microcomputer 72 performs a feedback control so that the actual current value I follows a current command value I* output from the higher level ECU, and determines the duty ratio corresponding to the deviation between current command value I* and the actual current value I.
  • the microcomputer 72 outputs the motor control signal indicating the conduction pattern and duty ratio which are determined as described above, to the driving circuit 71.
  • the three-phase driving electric power is supplied from the driving circuit 71, and the motor 4 rotates.
  • the microcomputer 72 includes a failure detection function which detects a failure of an electric system that electrically connects the motor 4 with the electric power supply 59.
  • the microcomputer 72 is configured so that, when the actual current value I detected by the current sensor 74 becomes an impossible or discontinuous value, the microcomputer determines that a failure occurs in the electric system, and informs the driver that the electrical pump apparatus 1 breaks down.
  • the microcomputer 72 (control IC chip 53) corresponds to a failure detection circuit.
  • the electric system is configured by including the driving circuit 71, the connection end portions 55 of the motor coils 41, and wirings 75, 76 between the electric power supply 59 and the driving circuit 71, and between the driving circuit 71 and the connection end portions 55.
  • the control IC chip 53 is disposed at a position which is on the circuit board 51, and which is separated from the power IC chip 52, and placed so as to be higher (in the upper side in Fig. 2 ) in the direction of gravity than a lowest water level Hmin at which, in the state where the electrical pump apparatus 1 is attached to the vehicle body 61, a short circuit occurs in the electric system.
  • the control IC chip 53 is placed so as to be higher than a range of 1/3 from the lower end of the circuit board 51 in the direction of gravity, and higher in the direction of gravity than the screws 54c, 54d, 54e to which the connection end portions 55 of the motor coils 41 are connected, and the power IC chip 52.
  • the position where a plurality of terminals 52a downward extending in the direction of gravity from the power IC chip 52 are placed is at the lowest water level Hmin.
  • the terminals of the power IC chip 52 are submerged in advance of the control IC chip 53 having the failure detection function as described above, and a short circuit occurs in the electric system.
  • the embodiment can attain the following functions and effects.
  • the embodiment may be implemented in the following modes in which the embodiment is adequately changed.
  • Fig. 4 shows an electrical pump apparatus of Embodiment 2.
  • Embodiment 2 is configured similarly to Embodiment 1 except the manner of attachment of the control device 5, and therefore detailed description of the portions is omitted.
  • the attaching portions are formed so that, in the state where the electrical pump apparatus 1 is attached to the vehicle body, the circuit board 51 is in the horizontal direction.
  • the circuit board 51 is fixed to the motor case 13 and the pump case 11 through the screws 54.
  • the control IC chip 53 is mounted on one surface of the circuit board 51, the power IC chip 52 is mounted on the other surface, and the control IC chip 53 is placed so as to be higher in the direction of gravity than the power IC chip 52.
  • the position where the plurality of terminals projecting from the power IC chip 52 is at the lowest water level Hmin.
  • the cover 14 is fixed to the pedestal portion 42 of the motor case 13 by other bolts 60, and closes the control device 5 and the lower open and.
  • Embodiment 2 The functions and effects of Embodiment 2 are similar to those of Embodiment 1.
  • the control IC chip 53 in the case where flooding occurs in the housing 2, namely, a part of the electric system is submerged and short-circuited to cause the electric system to break down, before the control IC chip 53 is submerged and failure detection (operation) is certainly disabled.
  • the control IC chip 53 is placed in the higher side in the direction of gravity. Even in the case where a short circuit of the electric system does not occur, therefore, adhesion of rainwater or the like to the part of the electric system easily occurs in advance of adhesion to the control IC chip 53. Before the control IC chip 53 becomes unable to detect a failure, consequently, the part of the electric system deteriorates and breaks down. As a result, the control IC chip 53 can detect more surely a failure of the electric system, and the certainty of failure detection in the system can be enhanced.
  • an electrical pump apparatus in which a situation where a failure detection circuit becomes inoperative before detection of a failure of an electric system can be avoided, and the certainty of failure detection can be enhanced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (6)

  1. Dispositif de pompe électrique comprenant : une pompe (3) qui est configurée pour générer une pression d'huile ; un moteur (4) qui est configuré pour entraîner la pompe (3) ; un dispositif de commande (5) qui est configuré pour commander un fonctionnement du moteur (4) ; et un logement (2) qui loge la pompe (3), le moteur (4) et le dispositif de commande (5), et qui comporte une partie de fixation (63) destinée à être fixée sur une carrosserie de véhicule, caractérisé en ce que
    un circuit de détection de panne qui est configuré pour détecter une panne d'un système électrique qui connecte électriquement le moteur (4) à une alimentation électrique est disposé sur une carte de circuit (51) du dispositif de commande (5), et
    le circuit de détection de panne est placé sur la carte de circuit (51) pour être plus haut dans une direction de gravité que le niveau d'eau le plus bas auquel une inondation dans le logement (2) fait que le système électrique saute.
  2. Dispositif de pompe électrique selon la revendication 1, dans lequel la partie de fixation (63) est formée de telle manière que, dans un état dans lequel la partie de fixation (63) est fixée sur la carrosserie de véhicule, la carte de circuit (51) est perpendiculaire à une direction horizontale.
  3. Dispositif de pompe électrique selon la revendication 1 ou 2, dans lequel le circuit de détection de panne est placé pour être plus haut qu'une plage de 1/3 depuis une extrémité inférieure de la carte de circuit (51) dans la direction de gravité.
  4. Dispositif de pompe électrique selon la revendication 1, dans lequel la partie de fixation (63) est formée de telle manière que, dans un état où la partie de fixation (63) est fixée sur la carrosserie de véhicule, la carte de circuit (51) est dans une direction horizontale, et le circuit de détection de panne est monté sur une surface supérieure de la carte de circuit (51), moyennant quoi le circuit de détection de panne est placé de façon à être plus haut dans la direction de gravité que le niveau d'eau le plus bas.
  5. Dispositif de pompe électrique selon l'une quelconque des revendications 1 à 4, comprenant en outre : des moyens de détection de courant (74) qui sont configurés pour détecter un courant fourni au moteur (4), dans lequel le circuit de détection de panne détecte la panne du système électrique en fonction du courant détecté par les moyens de détection de courant (74).
  6. Dispositif de pompe électrique selon l'une quelconque des revendications 1 à 4, comprenant en outre : des moyens de détection de tension (73u, 73v, 73w) qui sont configurés pour détecter une tension appliquée au moteur (4), dans lequel le circuit de détection de panne détecte la panne du système électrique en fonction de la tension détectée par les moyens de détection de tension (73u, 73v, 73w).
EP12732411.9A 2011-01-04 2012-01-04 Appareil de pompe électrique Not-in-force EP2662568B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011000123 2011-01-04
PCT/JP2012/050035 WO2012093678A1 (fr) 2011-01-04 2012-01-04 Appareil de pompe électrique

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EP2662568A1 EP2662568A1 (fr) 2013-11-13
EP2662568A4 EP2662568A4 (fr) 2016-08-03
EP2662568B1 true EP2662568B1 (fr) 2018-04-18

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US (1) US20140037472A1 (fr)
EP (1) EP2662568B1 (fr)
JP (1) JP5994638B2 (fr)
CN (1) CN103314215B (fr)
WO (1) WO2012093678A1 (fr)

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JP6422638B2 (ja) * 2013-09-09 2018-11-14 株式会社デンソー 電力変換装置
DE102014111721A1 (de) * 2014-08-18 2016-02-18 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Fluidbeaufschlagungsvorrichtung für ein Getriebe für ein Kraftfahrzeug
DE102015010846B4 (de) * 2015-08-19 2017-04-13 Nidec Gpm Gmbh Elektromotorisch angetriebene Vakuumpumpe
CN106487167B (zh) * 2015-08-26 2020-08-18 浙江三花汽车零部件有限公司 电子泵
JPWO2018159472A1 (ja) * 2017-03-03 2020-01-09 日本電産トーソク株式会社 ポンプ装置
JP2019112978A (ja) * 2017-12-21 2019-07-11 日本電産トーソク株式会社 電動オイルポンプ
JP7039990B2 (ja) * 2017-12-21 2022-03-23 日本電産トーソク株式会社 電動オイルポンプ
JP2019112977A (ja) 2017-12-21 2019-07-11 日本電産トーソク株式会社 電動オイルポンプ
JP2019178648A (ja) * 2018-03-30 2019-10-17 日本電産トーソク株式会社 電動オイルポンプ
JP7358726B2 (ja) * 2018-07-17 2023-10-11 株式会社ジェイテクト モータ装置
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JP2021036743A (ja) * 2019-08-30 2021-03-04 日本電産トーソク株式会社 電子基板、車載電動機及び電動ポンプ
JP2021036741A (ja) * 2019-08-30 2021-03-04 日本電産トーソク株式会社 電子基板、車載電動機及び電動ポンプ
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Also Published As

Publication number Publication date
JPWO2012093678A1 (ja) 2014-06-09
CN103314215A (zh) 2013-09-18
EP2662568A4 (fr) 2016-08-03
EP2662568A1 (fr) 2013-11-13
WO2012093678A1 (fr) 2012-07-12
CN103314215B (zh) 2015-12-23
JP5994638B2 (ja) 2016-09-21
US20140037472A1 (en) 2014-02-06

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