WO2017026128A1 - Dispositif de moteur - Google Patents

Dispositif de moteur Download PDF

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Publication number
WO2017026128A1
WO2017026128A1 PCT/JP2016/050533 JP2016050533W WO2017026128A1 WO 2017026128 A1 WO2017026128 A1 WO 2017026128A1 JP 2016050533 W JP2016050533 W JP 2016050533W WO 2017026128 A1 WO2017026128 A1 WO 2017026128A1
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WO
WIPO (PCT)
Prior art keywords
motor
housing
substrate
lid
heat
Prior art date
Application number
PCT/JP2016/050533
Other languages
English (en)
Japanese (ja)
Inventor
加藤　健次
一法師　茂俊
一喜 渡部
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2016540701A priority Critical patent/JP6026063B1/ja
Publication of WO2017026128A1 publication Critical patent/WO2017026128A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • 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

Definitions

  • the present invention relates to a motor device in which a control device is attached to a motor.
  • the power substrate is provided with a power conversion element having a larger calorific value than the control board
  • the control board is provided with electronic components having a lower allowable temperature than the power conversion element.
  • the temperature of the control device is reduced due to a decrease in heat dissipation. It is necessary to limit the heat generation of the power conversion element provided on the power board based on the allowable temperature of the electronic parts provided on the control board so that the electronic parts on the control board do not break down when the temperature rises. Therefore, the upper limit of the motor output (for example, torque or rotation speed) is limited.
  • cooling fins are provided outside the storage portion of the control device to reduce the influence of heat generation from the power board. It is desired to further improve the upper limit of the motor output by suppressing a decrease in heat dissipation performance that depends on the installation direction of the storage unit.
  • the present invention has been made to solve the above-described problems, and provides a motor device that can be reduced in size and can suppress an increase in temperature of a control component in a housing of the control device. For the purpose.
  • the motor device includes a motor and a control device that is provided in the motor and controls the operation of the motor.
  • the control device includes a control component group including a first substrate and a second substrate, a housing provided with an opening and containing the control component group, and a low heat conduction unit having a lower thermal conductivity than the housing. And a lid that closes the opening in contact with the body.
  • the first substrate is attached to the lid.
  • the second substrate has a power conversion element that generates a larger amount of heat than the first substrate.
  • the power conversion element is arranged away from the first substrate in the direction along the axis of the motor. A part of the second substrate is in a position aligned with the first substrate in a direction perpendicular to the axis of the motor.
  • the motor device of the present invention it is possible to make it difficult for heat from the housing to be transmitted to the first substrate. Further, since the power conversion element is arranged away from the first substrate in the direction along the axis of the motor, the first substrate can be made less susceptible to the heat generated by the power conversion element. Thereby, the temperature rise of the 1st board
  • the motor device can be reduced in size.
  • FIG. 1 is a perspective view showing a motor device according to Embodiment 1 of the present invention.
  • FIG. 2 is a partial cross-sectional view showing the motor device 1 of FIG.
  • the motor device 1 has a motor 2 and a control device 3 provided on the motor 2 and controlling the operation of the motor 2.
  • the motor 2 has a motor body and a motor housing 4 that supports the motor body.
  • the motor body has a shaft 5, a cylindrical stator surrounding the shaft 5, and a rotor fixed to the shaft 5 and disposed inside the stator.
  • the stator has a stator coil
  • the rotor has a permanent magnet.
  • the shaft 5, the stator and the rotor are arranged coaxially with the axis of the motor 2.
  • the rotor and the shaft 5 rotate integrally with respect to the stator about the axis of the motor 2 by supplying power to the stator coil.
  • the motor housing 4 includes a cylindrical motor frame 6 that surrounds the stator, and a front bracket 7 and a rear bracket 8 that are a pair of plate-like brackets fixed to the motor frame 6 with, for example, a plurality of bolts. Yes.
  • the stator of the motor body is fixed to the inner surface of the motor frame 6.
  • a front bracket 7 is fixed to one end of the motor frame 6 in the axial direction, and a rear bracket 8 is fixed to the other end of the motor frame 6 in the axial direction. Thereby, the stator, the front bracket 7 and the rear bracket 8 are in contact with the motor frame 6.
  • the shaft 5 passes through the front bracket 7 and the rear bracket 8.
  • the shaft 5 is rotatably supported by the front bracket 7 and the rear bracket 8 via a bearing 9.
  • the rear bracket 8 is provided with an encoder 10 that is a rotation detector that generates a signal corresponding to the rotation of the shaft 5.
  • the control device 3 includes a housing 13 provided with an upper opening 11 and a lower opening 12, a plate-like upper lid 14 that closes the upper opening 11, and a lower opening 12. It has a plate-like lower lid 15 to be closed and a control component group 16 provided in the housing 13.
  • the housing 13 is integrated with the front bracket 7.
  • a single material formed by integral molding constitutes a bracket-integrated housing composed of the housing 13 and the front bracket 7. That is, in this example, a part of the single material formed by integral molding is the front bracket 7 and the remaining part is the housing 13.
  • the bracket-integrated case composed of the front bracket 7 and the case 13 is made of a metal having high thermal conductivity such as aluminum. In this example, the thickness of the front bracket 7 is greater than the thickness of the wall of the housing 13.
  • the upper opening 11 is provided on the upper surface of the housing 13, and the lower opening 12 is provided on the lower surface of the housing 13.
  • the lower opening 12 is larger than the upper opening 11.
  • the housing 13 is arranged with the lower opening 12 facing the motor 2.
  • the upper lid 14 is attached to the casing 13 with a plurality of screws 17 with the outer periphery of the upper lid 14 in contact with the casing 13. Further, the upper lid 14 is a low heat conducting portion made of a material having a lower thermal conductivity than the housing 13. In this example, the upper lid 14 is made of resin. As a material constituting the upper lid 14, for example, plastic or rubber may be used.
  • the lower lid 15 is attached to the housing 13 with a plurality of screws (not shown) with the outer periphery of the lower lid 15 in contact with the housing 13.
  • the lower lid 15 is made of resin or metal.
  • the control component group 16 includes a control substrate (that is, a first substrate) 18 that is a first control component attached to the upper lid 14, and a second that is provided in the housing 13 apart from the upper lid 14. And a power board (that is, a second board) 19 as control parts.
  • the control board 18 and the power board 19 are accommodated in a common housing 13. Further, the control board 18 and the power board 19 are arranged in parallel to each other along the axis of the motor 2.
  • the power board 19 is accommodated in the housing 13 in a state of being separated from the upper lid 14 and the lower lid 15.
  • the power board 19 has a board and a plurality of electronic components mounted on the board.
  • the size of the power board 19 is larger than the size of the control board 18.
  • a part of the power board 19 is aligned with the control board 18 in a direction orthogonal to the axis of the motor 2. That is, the power board 19 is accommodated in the housing 13 with a part of the board of the power board 19 facing the control board 18 in a direction orthogonal to the axis of the motor 2.
  • the plurality of electronic components on the power board 19 include a power conversion element 20 that is a heat-generating component having a larger heat generation amount than the total heat generation amount of the control board 18.
  • the power conversion element 20 is an element that supplies a current to the stator coil of the motor 2.
  • the control component group 16 controls the rotation speed and torque of the shaft 5 of the motor 2 by controlling the current from the power conversion element 20.
  • the power board 19 is disposed in the housing 13 with the power conversion element 20 attached to the inner surface of the housing 13.
  • the power conversion element 20 is attached to the wall of the housing 13 where the upper opening 11 is formed. That is, in this example, the housing 13 has an element mounting wall disposed at a position farther from the motor 2 than the power board 19 in the direction orthogonal to the axis of the motor 2, and the power conversion element 20 is the housing. It is attached to 13 element attachment walls. Therefore, in this example, the substrate of the power substrate 19 is disposed at a position closer to the motor 2 than the power conversion element 20. Between the inner surface of the element mounting wall of the housing 13 and the power conversion element 20, a heat conducting material 21 for transferring heat between the housing 13 and the power conversion element 20 is interposed. The heat conducting material 21 is in close contact with the inner surface of the element mounting wall of the housing 13 and the power conversion element 20.
  • the power conversion element 20 is arranged away from the control board 18 in the direction along the axis of the motor 2.
  • the power conversion element 20 is arranged between the front bracket 7 and the control board 18 in the direction along the axis of the motor 2. That is, the power conversion element 20 is disposed at a position closer to the front bracket 7 than the control board 18 in the direction along the axis of the motor 2.
  • the motor 2, the lower lid 15, the substrate of the power board 19, the power conversion element 20, and the housing 13 are in the direction orthogonal to the axis of the motor 2. They are arranged in the order of the element mounting wall.
  • the control board 18 has a board and a plurality of electronic components mounted on the board.
  • the plurality of electronic components of the control board 18 include components having a lower allowable temperature than the electronic components of the power board 19, that is, components that are vulnerable to heat.
  • the electronic component of the control board 18 controls the power conversion element 20 by sending a control signal to the power conversion element 20. Therefore, the amount of current supplied to the control board 18 is smaller than the amount of current supplied to the power conversion element 20, and the total heat generation amount of the control board 18 is smaller than the heat generation amount of the power conversion element 20. In the general motor device 1, the total value of the heat generation amount of each electronic component of the control board 18 is 1/10 or less of the heat generation amount of the power conversion element 20.
  • the control board 18 is attached to the upper lid 14 with the plurality of electronic components of the control board 18 facing the upper lid 14. Between the control board 18 and the upper lid 14, a heat conductive material 22 for transferring heat between the control board 18 and the upper lid 14 is interposed.
  • the heat conductive material 22 is in close contact with each of the control board 18 and the upper lid 14.
  • a thermal sheet or thermal grease is used as the heat conductive materials 21 and 22, for example.
  • the control board 18 is disposed closer to the motor 2 than the upper lid 14. At the position of the control board 18 in the direction along the axis of the motor 2, the motor 2, the lower lid 15, the control board 18, and the upper lid 14 are arranged in this order in the direction orthogonal to the axis of the motor 2.
  • a plurality of fixing bases 23 are fixed to the inner surface of the housing 13.
  • the control board 18 is placed on each fixed base 23 via a washer 24.
  • Each screw 17 for attaching the upper lid 14 to the housing 13 is attached to the fixed base 23 from outside the housing 13 through the upper lid 14, the control board 18 and the washer 24.
  • the washer 24 is made of a material having a lower thermal conductivity than the housing 13 and a higher electrical insulation than the housing 13.
  • the washer 24 is made of resin.
  • plastic or rubber may be used as a material constituting the washer 24, for example.
  • the heat generated in the power conversion element 20 is transmitted to the entire bracket-integrated casing through the heat conducting material 21 because the bracket-integrated casing including the casing 13 and the front bracket 7 is a single material.
  • the entire bracket-integrated casing is discharged out of the motor device 1 by natural convection and radiation.
  • the heat generated in the motor body is transmitted to the entire bracket-integrated housing via the motor frame 6 and released outside the motor device 1.
  • the temperature of the power conversion element 20 is higher than the temperature of the motor frame 6, the heat generated in the power conversion element 20 is transmitted to the motor frame 6 through the entire bracket-integrated housing, and out of the motor device 1. Released.
  • the control board 18 is arranged away from the power conversion element 20 in the direction along the axis of the motor 2.
  • the control board 18 is disposed at a position farther from the front bracket 7 than the power conversion element 20 in the direction along the axis of the motor 2. Therefore, in the control board 18, the temperature rise depending on each temperature rise of the power conversion element 20 and the motor 2 is suppressed.
  • the upper lid 14 that closes the upper opening 11 of the housing 13 has a low heat conducting portion made of a material having a lower thermal conductivity than the housing 13.
  • the control board 18 is attached to the upper lid 14. Therefore, the heat from the housing 13 becomes difficult to be transmitted in the surface direction of the upper lid 14 by the low heat conduction part, and the control board 18 suppresses the temperature rise depending on the temperature rise of each of the power conversion element 20 and the motor 2. The In other words, heat from the housing 13 to the control board 18 is less likely to be transmitted by the upper lid 14. Thereby, the temperature rise of the control board 18 is suppressed.
  • the power conversion element 20 is attached to the element mounting wall of the housing 13 disposed at a position farther from the motor 2 than the power board 19, and the control board 18 attached to the upper lid 14 is attached to the upper lid 14. It is arranged at a position closer to the motor 2 than 14. Therefore, in the power conversion element 20 and the control board 18, heat is radiated at a position opposite to the motor 2 side, and the temperature of the control board 18 due to the temperature rise of the motor 2 that has become high temperature due to heat generation of the stator coil. The rise is suppressed.
  • the upper lid 14 is a low heat conducting portion, it is possible to make it difficult for the heat from the housing 13 to be transmitted to the control board 18 by the upper lid 14.
  • the power conversion element 20 is arranged away from the control board 18 in the direction along the axis of the motor 2, it is possible to make it difficult for heat from the power conversion element 20 to be transmitted to the control board 18. Thereby, the temperature rise of the control board 18 can be suppressed and the control board 18 can be made difficult to break down. Therefore, the power board 19 including the power conversion element 20 that is a heat-generating component and the control board 18 including a heat-sensitive component can be arranged in a space in the common housing 13.
  • the arrangement space of the control board 18 and the power board 19 is reduced in the direction along the axis of the motor 2. Can do. Thereby, size reduction of the motor apparatus 1 can also be achieved. Further, the downsizing of the control device 3 can improve the vibration resistance of the control device 3 with respect to the vibrating motor 2.
  • control board 18 and the power board 19 are arranged in parallel with each other along the axis of the motor 2, the height of the control device 3 can be reduced. Thereby, size reduction of the motor apparatus 1 and the improvement of the vibration resistance of the control apparatus 3 with respect to the motor 2 can further be aimed at.
  • the control board 18 can be moved away from the front bracket 7. Heat transmitted to the housing 13 via the front bracket 7 can be prevented from reaching the control board 18. Thereby, the temperature rise of the control board 18 can be further suppressed.
  • the casing 13 has an element mounting wall disposed at a position farther from the motor 2 than the power board 19 in the direction orthogonal to the axis of the motor 2, and the power conversion element 20 is mounted on the element of the casing 13. Since it is attached to the wall and the control board 18 is arranged at a position closer to the motor 2 than the upper lid 14, the power conversion element 20 and the power conversion element at a position opposite to the motor 2 side of the control board 18 20 and the control board 18 can be radiated, and even when the motor 2 rises in temperature, the power conversion element 20 and the control board 18 can be radiated effectively. Thereby, the temperature rise of the control board 18 can be further suppressed.
  • the heat conductive material 22 is interposed between the control board 18 and the upper lid 14, it is possible to easily transfer the heat generated in the control board 18 to the upper lid 14. Thereby, the temperature of the control board 18 can be actively reduced.
  • bracket-integrated case composed of the case 13 and the front bracket 7 is a single material formed by integral molding, so that the heat conduction state between the case 13 and the front bracket 7 is remarkably improved. And can easily diffuse the heat. Thereby, heat from the power conversion element 20 and the motor frame 6 can be released to the outside of the motor device 1 by the entire bracket-integrated housing, and the temperature rise of the power board 19 and the entire motor device 1 is effectively suppressed. be able to.
  • control board 18 overlaps the fixed base 23 via a washer 24 having a lower thermal conductivity than the housing 13, for example, when the fixed base 23 becomes high temperature due to heat from the power conversion element 20. Even if it exists, the heat from the fixed base 23 can be made difficult to be transmitted to the control board 18 by the washer 24. Thereby, the temperature rise of the control board 18 can be further suppressed.
  • the thickness of the front bracket 7 is thicker than the thickness of the wall of the housing 13, heat is easily diffused by the front bracket 7, and the heat dissipation effect in the motor device 1 can be further improved. .
  • the power board 19 having the power conversion element 20 having a high allowable temperature but a large calorific value and the control board 18 having electronic components having a small calorific value but a low allowable temperature are accommodated in one casing 13. Even so, while the heat generation of the power conversion element 20 is cooled by the entire housing 13, the influence of the temperature increase of the power conversion element 20 and the housing 13 having a large heat generation amount on the temperature increase of the control board 18 can be minimized. it can. Thereby, the control device 3 in which two substrates coexist can be efficiently cooled, and the upper limit of the output of the motor 2 can be improved.
  • FIG. FIG. 3 is a partial cross-sectional view showing a motor device according to Embodiment 2 of the present invention.
  • the front bracket 7 has a plate-like bracket main body 71 and a plate-like bracket protrusion 72 protruding from the bracket main body 71.
  • the shaft 5 passes through the bracket body 71, and the shaft 5 is rotatably supported via the bearing 9.
  • the bracket protrusion 72 protrudes along the shaft 5 from the end of the bracket body 71 toward the rear bracket 8.
  • the cross-sectional shape of the front bracket 7 is L-shaped by the bracket main body 71 and the bracket protrusion 72.
  • the front bracket 7 is a single material formed by integral molding.
  • the housing 13 is a separate member from the front bracket 7. An end portion of the housing 13 is attached to a boundary portion between the bracket main body 71 and the bracket projecting portion 72 of the front bracket 7 with an attachment screw 31. Thereby, the housing 13 is integrated with the front bracket 7. The end of the housing 13 is in contact with the front bracket 7. Further, a part of the lower opening 12 of the housing 13 is closed by the bracket protrusion 72, and the remaining part is closed by the lower lid 15. The upper surface of the bracket protrusion 72 is exposed in the housing 13.
  • the power conversion element 20 of the power board 19 is attached to the surface of the bracket protrusion 72 exposed in the housing 13.
  • the power board 19 is disposed in the housing 13 apart from the control board 18, the upper lid 14, and the lower lid 15 with the power conversion element 20 attached to the bracket protrusion 72.
  • the power conversion element 20 is disposed at a position closer to the motor 2 than the substrate of the power substrate 19 in the direction orthogonal to the axis of the motor 2.
  • the heat conductive material 21 similar to that in the first embodiment is interposed between the surface of the bracket protrusion 72 exposed in the housing 13 and the power conversion element 20.
  • the heat conducting material 21 is in close contact with each of the bracket protrusion 72 and the power conversion element 20.
  • Other configurations are the same as those in the first embodiment.
  • the heat generated in the power conversion element 20 is transmitted to the bracket protrusion 72 via the heat conductive material 21, and is transmitted from the bracket protrusion 72 to the housing 13, the bracket body 71 and the motor frame 6. Heat transmitted to the housing 13, the bracket body 71 and the motor frame 6 is released from the surfaces of the housing 13, the bracket body 71 and the motor frame 6 to the outside of the motor device 1 by natural convection and radiation.
  • the heat generated in the motor body is transmitted to the front bracket 7 and the housing 13 via the motor frame 6 and released to the outside of the motor device 1.
  • the temperature of the power conversion element 20 is higher than the temperature of the motor frame 6
  • the heat generated in the power conversion element 20 is transmitted to the housing 13 and the motor frame 6 via the front bracket 7, and the outside of the motor device 1. Is released.
  • the control board 18 is disposed away from the power conversion element 20 in the direction along the axis of the motor 2, and is further away from the front bracket 7 than the power conversion element 20 in the direction along the axis of the motor 2. Placed in position. Therefore, in the control board 18, the temperature rise depending on each temperature rise of the power conversion element 20 and the motor 2 is suppressed.
  • the upper lid 14 that closes the upper opening 11 of the housing 13 has a low heat conducting portion made of a material having a lower thermal conductivity than the housing 13.
  • the control board 18 is attached to the upper lid 14. Therefore, the heat from the housing 13 becomes difficult to be transmitted in the surface direction of the upper lid 14 by the low heat conduction part, and the control board 18 suppresses the temperature rise depending on the temperature rise of each of the power conversion element 20 and the motor 2. The In other words, heat from the housing 13 to the control board 18 is less likely to be transmitted by the upper lid 14. Thereby, the temperature rise of the control board 18 is suppressed.
  • the housing 13 is a separate member from the front bracket 7, and the power conversion element 20, which is a heat generating component, is attached to the bracket protrusion 72 of the front bracket 7.
  • the heat generated at 20 can be transmitted to the housing 13, the bracket body 71 and the motor frame 6 via the bracket protrusion 72. Further, heat generated in the motor main body can be transferred to the motor frame 6, the bracket main body 71 and the housing 13. Thereby, the heat from the power conversion element 20 and the motor body can be released from the respective surfaces of the motor frame 6, the bracket body 71, and the housing 13 to the outside of the motor device 1, and the control board 18, the power board 19, and the motor The temperature rise of the entire apparatus 1 can be effectively suppressed.
  • the housing 13 is a separate member from the front bracket 7, the power board 19 can be attached to the front bracket 7 with the front bracket 7 attached to the motor frame 6. Therefore, a wide working space can be secured when the power board 19 is attached, and the manufacture of the motor device 1 can be facilitated.
  • the thickness of the front bracket 7 thicker than the thickness of the wall of the housing 13, heat is easily diffused in the front bracket 7, and the heat dissipation effect in the motor device 1 can be further improved.
  • FIG. FIG. 4 is a partial sectional view showing a motor device according to Embodiment 3 of the present invention.
  • the housing 13 is a separate member from the plate-shaped front bracket 7.
  • the end portion of the housing 13 is attached to the end portion of the front bracket 7 (the upper end portion of the front bracket 7 in FIG. 4) with a mounting screw 31.
  • the housing 13 is integrated with the front bracket 7.
  • the end of the housing 13 is in contact with the end of the front bracket 7.
  • Other configurations are the same as those in the first embodiment.
  • the heat generated in the power conversion element 20 is transmitted to the housing 13 via the heat conducting material 21, and is transmitted from the housing 13 to the front bracket 7 and the motor frame 6.
  • the heat transmitted to the housing 13, the front bracket 7, and the motor frame 6 is released from the surfaces of the housing 13, the front bracket 7, and the motor frame 6 to the outside of the motor device 1 by natural convection and radiation.
  • the heat generated in the motor body is transmitted to the front bracket 7 and the housing 13 via the motor frame 6 and released to the outside of the motor device 1.
  • the temperature of the power conversion element 20 is higher than the temperature of the motor frame 6
  • the heat generated in the power conversion element 20 is transmitted to the housing 13 and the motor frame 6 via the front bracket 7, and the outside of the motor device 1. Is released.
  • the control board 18 is disposed away from the power conversion element 20 in the direction along the axis of the motor 2, and is further away from the front bracket 7 than the power conversion element 20 in the direction along the axis of the motor 2. Placed in position. Therefore, in the control board 18, the temperature rise depending on each temperature rise of the power conversion element 20 and the motor 2 is suppressed.
  • the upper lid 14 that closes the upper opening 11 of the housing 13 has a low heat conducting portion made of a material having a lower thermal conductivity than the housing 13.
  • the control board 18 is attached to the upper lid 14. Therefore, the heat from the housing 13 becomes difficult to be transmitted in the surface direction of the upper lid 14 by the low heat conduction part, and the control board 18 suppresses the temperature rise depending on the temperature rise of each of the power conversion element 20 and the motor 2. The In other words, heat from the housing 13 to the control board 18 is less likely to be transmitted by the upper lid 14. Thereby, the temperature rise of the control board 18 is suppressed.
  • the power conversion element 20 is attached to the element mounting wall of the housing 13 disposed at a position farther from the motor 2 than the power board 19, and the control board 18 attached to the upper lid 14 is attached to the upper lid 14. It is arranged at a position closer to the motor 2 than 14. Therefore, in the power conversion element 20 and the control board 18, heat is radiated at a position opposite to the motor 2 side, and the temperature of the control board 18 due to the temperature rise of the motor 2 that has become high temperature due to heat generation of the stator coil. The rise is suppressed.
  • the housing 13 is a separate member from the front bracket 7, the separately manufactured motor 2 and the control device 3 can be combined with each other, and the manufacture of the motor device 1 is facilitated. be able to. Further, the control device 3 can be easily detached from the motor 2, and for example, work such as repair when the control device 3 breaks down can be facilitated. Further, by making the thickness of the front bracket 7 thicker than the thickness of the wall of the housing 13, heat can be easily diffused in the front bracket 7, and the heat dissipation effect in the motor device 1 can be further improved.
  • FIG. 5 is a partial sectional view showing a motor device according to Embodiment 4 of the present invention.
  • a heat insulating material 32 that suppresses heat transfer between the control board 18 and the housing 13 overlaps the surface of the control board 18 exposed in the housing 13.
  • the heat conductivity of the heat insulating material 32 is lower than the heat conductivity of the housing 13.
  • the heat insulating material 32 overlaps the entire surface of the control board 18 exposed in the housing 13.
  • the control board 18 is placed on top of each other via a heat insulating material 32.
  • Other configurations are the same as those in the first embodiment.
  • the configuration in which the heat insulating material 32 is stacked on the surface of the control board 18 exposed in the casing 13 is applied to the motor device 1 of the first embodiment.
  • a configuration in which the heat insulating material 32 is overlaid on the surface exposed to may be applied to the motor devices 1 of the second and third embodiments.
  • FIG. FIG. 6 is a partial cross-sectional view showing a motor device according to Embodiment 5 of the present invention.
  • the control board 18 is arranged away from the upper lid 14 downward. Thereby, a gap which is a space exists between the control board 18 and the upper lid 14.
  • the control board 18 is placed on each fixed base 23 with its own weight via a heat insulating material 32.
  • Other configurations are the same as those of the fourth embodiment.
  • the configuration in which the control board 18 is arranged away from the upper lid 14 is applied to the motor device 1 of the fourth embodiment.
  • the present invention may be applied to the motor device 1 according to the first to third embodiments.
  • FIG. FIG. 7 is a partial cross-sectional view showing a motor device according to Embodiment 6 of the present invention.
  • the upper lid 14 includes a metal lid main body 41 and a low heat conduction portion 42 interposed between the lid main body 41 and the housing 13.
  • the lid body 41 covers the entire upper opening 11. Further, the lid main body 41 is arranged away from the housing 13 by the low heat conducting portion 42.
  • the low heat conducting portion 42 is provided on the lid main body 41 along the outer peripheral portion of the upper opening 11. Further, the low heat conducting portion 42 is in contact with the housing 13.
  • the lid main body 41 is a high heat conduction portion made of a metal having high thermal conductivity, such as aluminum or copper.
  • a ceramic having a high thermal conductivity for example, aluminum nitride (AlN)
  • a graphite composite material may be used as a material constituting the lid main body 41.
  • the thermal conductivity of the low thermal conductive portion 42 is lower than the thermal conductivity of the housing 13 and the lid body 41. This makes it difficult for heat from the housing 13 to be transmitted to the lid body 41.
  • the heat conductive material 22 that is in close contact with the control board 18 and the lid body 41 is interposed.
  • the heat conducting material 22 is made of a material having electrical insulation.
  • Other configurations are the same as those in the first embodiment.
  • the low heat conductive portion 42 is interposed between the metal lid main body 41 and the housing 13, and the heat conductive material 22 in close contact with the control board 18 and the lid main body 41 is controlled. Since it is interposed between the substrate 18 and the lid body 41, even if there are components having a high heat generation density among the components included in the control substrate 18, the lid body 41 having a high thermal conductivity is used for the control substrate. The heat concentration can be reduced by diffusing the heat from 18. Thereby, the temperature rise of the control board 18 can be suppressed.
  • the low heat conduction portion 42 is interposed between the lid main body 41 and the housing 13, it becomes difficult for heat to be transmitted from the housing 13, which has become high temperature due to the heat generated by the power conversion element 20, to the lid main body 41.
  • the temperature rise of the substrate 18 can be further suppressed.
  • the configuration in which the upper lid 14 includes the lid main body 41 and the low heat conduction portion 42 is applied to the upper lid 14 of the motor device 1 of the first embodiment.
  • the configuration including the low heat conduction unit 42 may be applied to the upper lid 14 of the motor device 1 of the second to fourth embodiments.
  • FIG. FIG. 8 is a partial sectional view showing a motor device according to Embodiment 7 of the present invention.
  • FIG. 9 is a top view showing the upper lid 14 of FIG.
  • the upper lid 14 includes a metal plate 45 and a resin-made low heat conduction portion 46 integrated with the metal plate 45.
  • the low heat conducting portion 46 is integrated with the metal plate 45 in a state where it is in contact with the metal plate 45.
  • the metal plate 45 is a high heat conduction part made of a metal having high thermal conductivity, such as aluminum or copper.
  • the thermal conductivity of the low thermal conductive portion 42 is lower than the thermal conductivity of the housing 13 and the metal plate 45.
  • the upper lid 14 is attached to the housing 13 in a state where the metal plate 45 and the low heat conducting portion 46 are in contact with the housing 13.
  • the plurality of screws 17 for attaching the upper lid 14 to the housing 13 all pass through the low heat conducting portion 46.
  • the low heat conducting portion 46 is a U-shaped plate as shown in FIG. Further, in this example, the metal plate 45 is fixed in a U-shaped inner space of the low heat conducting portion 46. Therefore, in this example, the upper lid 14 is in a state in which the low heat conduction portion 46 is in contact with three sides of the four sides of the rectangular upper opening 11 and the metal plate 45 is in contact with the remaining one side. 13 is attached. In this example, the metal plate 45 is in contact with one of the four sides of the upper opening 11 that is farthest from the position of the power conversion element 20.
  • the heat conductive material 22 is interposed between each of the metal plate 45 and the low heat conductive portion 46 and the control board 18.
  • the heat conducting material 22 is in close contact with each of the metal plate 45 and the low heat conducting portion 46.
  • the heat conducting material 22 is made of a material having electrical insulation. Other configurations are the same as those in the first embodiment.
  • the upper lid 14 is attached to the housing 13 with the metal plate 45 and the low thermal conduction portion 46 in contact with the housing 13, and is attached to each of the control board 18 and the metal plate 45. Since the heat conductive material 22 that is in close contact is interposed between the control board 18 and the metal plate 45, even if there are parts with high heat generation density among the parts included in the control board 18, the thermal conductivity The high metal plate 45 can diffuse the heat from the control board 18 to alleviate the concentration of heat, and the temperature rise of the control board 18 can be suppressed. In addition, since the low heat conducting portion 46 is in contact with the housing 13, it is difficult for heat to be transmitted from the housing 13 to the metal plate 45, and the temperature rise of the control board 18 can be further suppressed.
  • the configuration in which the upper lid 14 includes the metal plate 45 and the low thermal conductivity portion 46 is applied to the upper lid 14 of the motor device 1 of the first embodiment.
  • the configuration including the low heat conduction unit 46 may be applied to the upper lid 14 of the motor device 1 of the second to fourth embodiments.
  • the metal plate 45 is the high thermal conductivity portion of the upper lid 14, but the upper plate is made of a ceramic having a high thermal conductivity (eg, aluminum nitride (AlN)) or a graphite composite material.
  • the lid 14 may be a high heat conducting portion.
  • FIG. 10 is a partial cross-sectional view showing a motor device according to an eighth embodiment of the present invention.
  • a heat radiating plate 51 having a higher heat conductivity than that of the low heat conducting portion 46 is attached to the upper lid 14 outside the housing 13.
  • the heat radiating plate 51 overlaps the upper lid 14 while being in contact with the metal plate 45 and the low heat conducting portion 46, respectively.
  • the heat radiating plate 51 is attached to the upper lid 14 by a plurality of screws 17 that attach the upper lid 14 to the housing 13.
  • the length of the heat sink 51 is longer than the length of the upper lid 14.
  • the surface area of the heat sink 51 is larger than the surface area of the upper lid 14.
  • the heat sink 51 extends from the end of the metal plate 45 to the outside of the upper lid 14.
  • the heat sink 51 is comprised, for example with aluminum or copper. Other configurations are the same as those of the seventh embodiment.
  • the heat radiating plate 51 having a higher thermal conductivity than the low heat conducting portion 46 is attached to the upper lid 14 outside the housing 13, the heat of the upper lid 14 is effectively transferred from the heat radiating plate 51.
  • the temperature rise of the control substrate 18 can be further suppressed. For example, even when there is a part having a high heat generation density among the parts included in the control board 18, the heat of the upper lid 14 can be effectively released to the outside of the housing 13, and the temperature of the control board 18 The rise can be suppressed.
  • the metal plate 45 is the high thermal conductivity portion of the upper lid 14, but the upper plate is made of a ceramic having a high thermal conductivity (eg, aluminum nitride (AlN)) or a graphite composite material.
  • the lid 14 may be a high heat conducting portion.
  • FIG. FIG. 11 is a partial cross-sectional view showing a motor device according to Embodiment 9 of the present invention.
  • a rubber O-ring 55 as a seal material is interposed between the upper lid 14 and the housing 13.
  • a rubber O-ring 56 as a sealing material is interposed between the lower lid 15 and the housing 13.
  • Other configurations are the same as those in the first embodiment.
  • a configuration in which a sealing material is interposed between each of the upper lid 14 and the lower lid 15 and the housing 13 is applied to the motor device 1 of the first embodiment.
  • a configuration in which a sealing material is interposed between each of the lower lids 15 and the housing 13 may be applied to the motor devices 1 of the second to eighth embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'objet de l'invention est d'obtenir un dispositif de moteur permettant de minimiser les accroissements de température de composants de contrôle à l'intérieur d'une enceinte d'un dispositif de contrôle tout en atteignant également une réduction de la taille. Un dispositif de commande (3) installé dans un moteur (2) inclut : un groupe de composants de contrôle (16) qui inclut un premier substrat (18) et un deuxième substrat (19) ; une enceinte (13) pour l'installation du groupe de composants de contrôle (16), une ouverture (11) étant réalisée dans ladite enceinte (13) ; et une section à faible conduction de chaleur (42) dont la conductivité thermique est inférieure à celle du logement (13). Le dispositif de contrôle (3) comporte un couvercle (14) pour la fermeture de la section d'ouverture (11) une fois qu'il est en contact avec l'enceinte (13). Le premier substrat (18) est fixé au couvercle (14). Le deuxième substrat (19) comporte un élément de conversion de puissance (20) qui émet plus de chaleur que la quantité totale de chaleur émise par le premier substrat (18), et qui est installé à l'intérieur de l'enceinte (13) une fois séparé du couvercle (14). L'élément de conversion de puissance (20) est séparé du premier substrat (18) dans la direction suivant l'axe du moteur (2). Une partie du deuxième substrat (19) est alignée avec le premier substrat (18) dans la direction en intersection avec l'axe du moteur (2).
PCT/JP2016/050533 2015-08-11 2016-01-08 Dispositif de moteur WO2017026128A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016540701A JP6026063B1 (ja) 2015-08-11 2016-01-08 モータ装置

Applications Claiming Priority (2)

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JP2015-158928 2015-08-11
JP2015158928 2015-08-11

Publications (1)

Publication Number Publication Date
WO2017026128A1 true WO2017026128A1 (fr) 2017-02-16

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018230211A1 (fr) * 2017-06-16 2018-12-20 日立オートモティブシステムズ株式会社 Dispositif d'entraînement électrique et dispositif de direction assistée électrique
JP2019050704A (ja) * 2017-09-12 2019-03-28 東芝産業機器システム株式会社 回転電機
IT202100001841A1 (it) * 2021-01-29 2022-07-29 Amer Spa Calotta di chiusura per motori elettrici, e gruppo motore comprendente un motore elettrico associato alla suddetta calotta di chiusura
WO2023079839A1 (fr) * 2021-11-04 2023-05-11 株式会社豊田自動織機 Machine à fluide électrique
US12113404B2 (en) 2019-09-30 2024-10-08 Nidec Corporation Motor unit
US12119715B2 (en) 2019-09-30 2024-10-15 Nidec Corporation Motor unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306671A (ja) * 2006-05-09 2007-11-22 Denso Corp 車両用のモータ駆動装置
JP2012092747A (ja) * 2010-10-27 2012-05-17 Mitsubishi Heavy Ind Ltd インバータ一体型電動圧縮機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306671A (ja) * 2006-05-09 2007-11-22 Denso Corp 車両用のモータ駆動装置
JP2012092747A (ja) * 2010-10-27 2012-05-17 Mitsubishi Heavy Ind Ltd インバータ一体型電動圧縮機

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018230211A1 (fr) * 2017-06-16 2018-12-20 日立オートモティブシステムズ株式会社 Dispositif d'entraînement électrique et dispositif de direction assistée électrique
CN110710087A (zh) * 2017-06-16 2020-01-17 日立汽车系统株式会社 电动驱动装置及电动动力转向装置
JP2019050704A (ja) * 2017-09-12 2019-03-28 東芝産業機器システム株式会社 回転電機
US12113404B2 (en) 2019-09-30 2024-10-08 Nidec Corporation Motor unit
US12119715B2 (en) 2019-09-30 2024-10-15 Nidec Corporation Motor unit
IT202100001841A1 (it) * 2021-01-29 2022-07-29 Amer Spa Calotta di chiusura per motori elettrici, e gruppo motore comprendente un motore elettrico associato alla suddetta calotta di chiusura
WO2022162599A1 (fr) * 2021-01-29 2022-08-04 Amer S.P.A. Capuchon d'extrémité pour moteurs électriques, et unité de moteur comprenant un moteur électrique associé audit capuchon d'extrémité
WO2023079839A1 (fr) * 2021-11-04 2023-05-11 株式会社豊田自動織機 Machine à fluide électrique

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