WO2021153307A1 - Compresseur électrique - Google Patents

Compresseur électrique Download PDF

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Publication number
WO2021153307A1
WO2021153307A1 PCT/JP2021/001456 JP2021001456W WO2021153307A1 WO 2021153307 A1 WO2021153307 A1 WO 2021153307A1 JP 2021001456 W JP2021001456 W JP 2021001456W WO 2021153307 A1 WO2021153307 A1 WO 2021153307A1
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WO
WIPO (PCT)
Prior art keywords
arm
axis
arm portion
control board
connection terminal
Prior art date
Application number
PCT/JP2021/001456
Other languages
English (en)
Japanese (ja)
Inventor
拓真 近藤
中野　浩児
創 佐藤
和彦 芹澤
Original Assignee
三菱重工業株式会社
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 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Publication of WO2021153307A1 publication Critical patent/WO2021153307A1/fr

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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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Definitions

  • This disclosure relates to an electric compressor.
  • Patent Document 1 discloses that a sealed terminal connected to an electric motor is arranged so as to penetrate a housing, and the sealed terminal and a terminal portion of a control board are electrically connected via a relay external connector.
  • Patent Document 1 It is also necessary to ensure vibration resistance in compressors installed in in-vehicle air conditioners that are required to be compact and lightweight.
  • the sealed terminal of Patent Document 1 extends straight upward in the vertical direction, and miniaturization in the height direction cannot be realized. Therefore, the present disclosure provides an electric compressor provided with a sealed terminal that can be miniaturized.
  • the electric compressor controls a housing forming a closed internal space, a compression mechanism housed in the internal space, an electric motor housed in the internal space and driving the compression mechanism, and an electric motor.
  • the control board is provided with a connecting portion for electrically connecting the electric motor and the control board.
  • the electric motor has a plurality of first connection terminals exposed to the outside of the housing, and the control board has a plurality of second connection terminals.
  • the connection portion has a joint portion to be joined to the first connection terminal, and a connection portion to which one end is connected to the joint portion and the other end is joined to the second connection terminal.
  • a joint portion between the second connection terminal and the connecting portion is provided at a position lower than the top of the connecting portion.
  • a joint portion between the second connection terminal and the connection portion is provided at a position lower than the top of the connection portion.
  • FIG. 3 is a plan view of the vicinity of the connection portion shown in FIG. 3 as viewed from above. It is a figure which looked at the vicinity of the connection part shown in FIG. 3 along the X axis. It is a partially enlarged view of the connection part shown in FIG.
  • connection part which concerns on 2nd Embodiment along the X axis. It is a figure which looked at the vicinity of the connection part which concerns on 3rd Embodiment along the X axis. It is a figure which looked at the vicinity of the connection part which concerns on the modification of 1st Embodiment along the X axis. It is a figure which looked at the vicinity of the connection part which concerns on other modification of 1st Embodiment along the X axis.
  • the inverter-integrated electric compressor 100 is housed in a housing 10 that forms a closed internal space, a compression mechanism 20 that is housed in the internal space of the housing 10, and an internal space of the housing 10.
  • the electric motor 30 is provided, an inverter device 40 having a control board 41B for controlling the electric motor 30, and a connecting portion 50 for electrically connecting the electric motor 30 and the inverter device 40.
  • the electric compressor 100 of the present embodiment is a compressor used in a vehicle air conditioner, and the compression mechanism 20 is driven by an electric motor 30 whose drive rotation speed is controlled by an inverter device 40.
  • the electric compressor 100 is mounted on a vehicle including an engine or other vibration source that obtains power by burning fuel such as gasoline. Therefore, in addition to the vibration of the compression mechanism 20, the vibration from the engine and other vibration sources is transmitted to the electric compressor 100.
  • the housing 10 has a compressor housing 11 that houses the compression mechanism 20 and a motor housing 12 that houses the electric motor 30.
  • the housing 10 forms a closed internal space by connecting the compressor housing 11 and the motor housing 12 with bolts 13.
  • the housing 10 is made of, for example, an aluminum alloy.
  • a refrigerant suction port 14 for sucking low-pressure refrigerant gas is provided behind the motor housing 12 (B).
  • a refrigerant discharge port 15 for discharging the compressed refrigerant gas to the outside is provided in front (F) of the compressor housing 11.
  • An inverter accommodating portion 16 for integrally incorporating the inverter device 40 is provided on the outer peripheral portion of the motor housing 12.
  • the inverter accommodating portion 16 is composed of an inverter box 17 integrally molded with the motor housing 12 and a junction box 18 integrally coupled to the inverter box 17 via screws or the like.
  • the junction box 18 also serves as a cover that closes the upper surface of the inverter box 17.
  • the inverter box 17 has a substantially rectangular shape in a plan view and has a rising wall raised upward around the inverter box 17.
  • a flange surface 17A for fixing the junction box 18 is formed on the upper surface of the inverter box 17.
  • the bottom surface of the inverter box 17 on the inner side is a flat surface on which the inverter module 41 constituting the inverter device 40 is installed. This flat surface is composed of an outer peripheral wall of the motor housing 12.
  • the junction box 18 is a box body for accommodating the inverter device 40, and is formed of, for example, an aluminum alloy.
  • the junction box 18 has the same rectangular shape as the inverter box 17 in a plan view, and a flange surface 18A for integrally coupling with the inverter box 17 is formed on the lower surface of the peripheral wall.
  • the compression mechanism 20 is a device that compresses the low-pressure refrigerant gas sucked from the refrigerant suction port 14 and discharges it to the refrigerant discharge port 15.
  • the compression mechanism 20 is, for example, a scroll compressor having a swivel scroll connected to a drive shaft rotated by an electric motor 30 and a fixed scroll fixed to the compressor housing 11. The illustration of the swivel scroll and the fixed scroll is omitted.
  • the electric motor 30 includes a stator that generates an alternating magnetic field by an alternating current supplied from the inverter device 40, a rotor that rotates by a magnetic force received from the alternating magnetic field, and a drive shaft that connects the rotor and the compression mechanism 20.
  • the electric motor 30 drives the compression mechanism 20 by rotating the drive shaft. Illustration of the stator, rotor and drive shaft is omitted.
  • the inverter device 40 includes an inverter module 41 housed in the inverter box 17 and a noise removing filter circuit housed in the junction box 18.
  • the inverter module 41 is a device in which a metal base plate 41A and a control board 41B are integrally modularized via a plurality of spacers 41D.
  • the metal base plate 41A is made of a rectangular aluminum alloy plate material, and is fixed by screws so as to be in close contact with the flat outer peripheral wall of the motor housing 12 which is the bottom surface of the inverter box 17.
  • the illustration of the filter circuit is omitted.
  • the control board 41B is connected to a vehicle-side control device (ECU) via a communication line, and is equipped with a control circuit that transmits and receives control signals to and from the ECU and controls AC power applied to the electric motor 30 based on the control signals. It is a rectangular substrate. On the control board 41B, an intelligent power module (not shown) having a UVW output terminal for outputting a three-phase alternating current to the electric motor 30 is mounted.
  • the control board 41B is integrated with the metal base plate 41A via a plurality of spacers 41D.
  • FIG. 3 is a partially enlarged view of the vicinity of the connection portion 50 shown in FIG.
  • the control board 41B has through holes 41C which are three connection terminals electrically connected to the UVW output terminals of the intelligent power module.
  • the through hole 41C corresponds to the second connection terminal of the present disclosure.
  • the three through holes 41C are electrically connected to the motor connection terminal 31A of the insulating terminal portion 31 of the electric motor 30 by the connection portion 50, respectively.
  • the through holes 41C and the motor connection terminals 31A are arranged at equal intervals along an axis parallel to the X axis shown in FIG. 3, respectively.
  • the insulated terminal portion 31 is attached to the opening 12A provided in the motor housing 12 by the fastening bolt 32.
  • the insulating terminal portion 31 seals the opening 12A so that the internal space IS of the motor housing 12 and the external space OS of the motor housing 12 do not communicate with each other.
  • the insulated terminal portion 31 is attached to the motor housing 12 by means of a motor connection terminal 31A as a first connection terminal for electrically connecting the electric motor 30 and the connection portion 50 and a fastening bolt 32. It has a metal terminal accommodating case 31B to be attached and an insulator 31C arranged so as to surround the motor connection terminal 31A.
  • the three motor connection terminals 31A shown in FIGS. 3 and 4 are electrically connected to each of the U terminal, V terminal, and W terminal of the electric motor 30.
  • the motor connection terminal 31A is formed so as to project from the internal space IS of the motor housing 12 to the external space OS.
  • the motor connection terminal 31A is integrally formed with a vitrified body (not shown), and is insulated from the terminal accommodating case 31B by the vitrified body.
  • the insulator 31C is a member formed in a substantially cylindrical shape using a material having an electrically insulating property, and a motor connection terminal 31A is arranged through the inside.
  • the insulator 31C secures an insulation distance between the connection portion 50 and the terminal accommodating case 31B.
  • connection portion 50 is a metal member that electrically connects the motor connection terminal 31A of the electric motor 30 and the through hole 41C of the control board 41B.
  • the connecting portion 50 is formed, for example, by punching a sheet metal.
  • the connection portion 50 is provided corresponding to each of the three motor connection terminals 31A.
  • the connection portion 50 includes a plate-shaped joint portion 51 to be joined to the motor connection terminal 31A, and a connection portion in which one end is connected to the joint portion 51 and the other end is connected to the through hole 41C. 52 and.
  • the joint portion 51 has a width W2 wider than the width W1 in the axis Y direction of the motor connection terminal 31A.
  • the surface of the joint portion 51 on the motor connection terminal 31A side is the joint surface 51A to be joined to the motor connection terminal 31A.
  • the motor connection terminal 31A and the joint surface 51A are joined by, for example, solder SO, which is an alloy of tin and lead.
  • the motor connection terminal 31A and the joint surface 51A may be joined by, for example, arc welding.
  • the connecting portion 52 is a shaft-shaped member formed so that the cross-sectional shapes at each position are substantially the same, and as shown in FIG. 6, the connecting portion 52 and the first arm portion 52A extending along the first axis A1 It has a second arm portion 52B extending along a second axis A2 orthogonal to the first axis A1, and a third arm portion 52C extending along a third axis A3 orthogonal to the first axis A1. Since the first axis A1 and the second axis A2 are orthogonal to each other, the angle ⁇ 1 formed by the first axis A1 and the second axis A2 is 90 °.
  • the angle ⁇ 2 formed by the first axis A1 and the third axis A3 is 90 °.
  • the second arm portion 52B and the third arm portion 52C extend downward on the Z axis, and the connecting portion 52 has a C-shaped appearance.
  • the angle ⁇ 1 formed by the first axis A1 and the second axis A2 is set to another angle different from 90 ° and does not include 0 ° so that the first axis A1 and the second axis A2 intersect. May be good.
  • the angle ⁇ 2 formed by the first axis A1 and the third axis A3 is set to another angle different from 90 ° and does not include 0 ° so that the first axis A1 and the third axis A3 intersect. You may.
  • the first arm portion 52A is a shaft-shaped member having one end connected to the second arm portion 52B and the other end connected to the third arm portion 52C.
  • the first arm portion 52A extends along a direction orthogonal to the direction parallel to the axis Z on which the motor connection terminal 31A extends. Further, the first arm portion 52A is arranged above the control board 41B in the direction along the axis Z.
  • a first gap 53A having a predetermined distance or more in the axis Z direction is formed between the first arm portion 52A and the joint portion 51.
  • the first gap 53A is a gap that prevents the first arm portion 52A from coming into contact with the joint portion 51 when the connecting portion 52 is elastically deformed due to vibration and the elastic deformation is less than a desired amount of deformation. Is.
  • One end of the second arm 52B is connected to the first arm 52A and the other end is joined to the through hole 41C.
  • the end portion of the second arm portion 52B on the control board 41B side is joined by solder SO in a state of being inserted into the through hole 41C.
  • the second arm portion 52B is joined to the through hole 41C by the solder SO, so that the second arm portion 52B is electrically connected to the control board 41B.
  • the other end of the second arm portion 52B and the through hole 41C that is, the control board 41B
  • the control board 41B are provided with a joint portion at a position lower than the first arm portion 52A corresponding to the top of the connecting portion 52.
  • the third arm 52C is connected to the joint 51 and the other end is connected to the first arm 52A.
  • the third arm portion 52C is connected to the joint portion 51 at a position farthest from the control board 41B in the axis Z direction. Therefore, the length of the third arm portion 52C is longer than that in the case of connecting to the joint portion 51 at a position close to the control board 41B in the axis Z direction.
  • a second gap 53B having a predetermined distance or more in the axis Y direction is formed between the third arm portion 52C and the joint portion 51.
  • the second gap 53B is a gap that prevents the third arm portion 52C from coming into contact with the joint portion 51 when the connecting portion 52 is elastically deformed due to vibration and the elastic deformation is less than a desired amount of deformation. Is.
  • one end of the connecting portion 52 is joined to the joining portion 51, and the other end is joined to the control board 41B in a state of being inserted into the through hole 41C. Therefore, when the relative position of the control board 41B with respect to the motor housing 12 in the XYZ space changes due to the vibration of the compression mechanism 20 and the electric motor 30, the connecting portion 52 becomes a through hole 41C of the second arm portion 52B with respect to the joint portion 51. The position of the joint part of is changed.
  • the connecting portion 52 of the present embodiment can change the direction in which the arm portion extends in order to follow the change in the position of the joint portion of the second arm portion 52B with the through hole 41C with respect to the joint portion 51. It has three bends.
  • the first bent portion B1 is formed at a connection position between the first arm portion 52A and the second arm portion 52B.
  • the second bent portion B2 is formed at a connection position between the first arm portion 52A and the third arm portion 52C.
  • the third bent portion B3 is formed at a connection position between the third arm portion 52C and the joint portion 51.
  • the connecting portion 52 has an angle ⁇ 1 of the first bent portion B1 and a second bent portion B2.
  • the angle ⁇ 2 is increased, and the third arm portion 52C is displaced so that the third bending portion B3 narrows the second gap 53B.
  • the connecting portion 52 is in an extended state.
  • the connecting portion 52 extends, it follows a change in the position of the through hole 41C with respect to the joining portion 51. Therefore, the stress applied to the joint portion between the connecting portion 52 and the motor connection terminal 31A and the joint portion between the connecting portion 52 and the through hole 41C is reduced.
  • connecting portion 52 contracts and expands in accordance with vibration has been described with reference to the YZ plane shown in FIG. 6, but the same applies to the XY plane and the XZ plane. That is, since the connecting portion 52 has a mechanism of contracting and expanding following vibration, the connecting portion 52 and the connecting portion 52 of the connecting portion 52 and the motor connecting terminal 31A and the connecting portion 52 are subjected to a displacement in an arbitrary direction in the XYZ space. It is displaced so as to reduce the stress applied to the joint portion with the through hole 41C.
  • the position where the joint portion 51 and the third arm portion 52C of the connecting portion 52 are connected is set as the first position P1, and the position of the tip of the second arm portion 52B is set as the second position P2.
  • the coordinates of the first position P1 in the XYZ space are (x1, y1, z1)
  • the coordinates of the second position P2 in the XYZ space are (x2, y2, z2).
  • the relative coordinates of the second position P2 with respect to the first position P1 are (x2-x1, y2-y1, z2-z1).
  • the vibration transmitted from each vibration source to the insulating terminal portion 31 and the control board 41B has vibration components along the axis X, the axis Y, and the axis Z, respectively. Therefore, the vibration transmitted from the plurality of vibration sources to the insulating terminal portion 31 and the control board 41B is a combination of vibration components along the axes X, Y, and Z of these plurality of vibration sources.
  • the joint portion between the connecting portion 52 and the motor connection terminal 31A and the connecting portion 52 By contracting or expanding the connecting portion 52 formed in a shaft shape in response to such vibration having vibration components in a plurality of directions, the joint portion between the connecting portion 52 and the motor connection terminal 31A and the connecting portion 52 The stress applied to the joint portion with the through hole 41C can be reduced.
  • the stress reduction due to the contraction or extension of the connecting portion 52 is particularly effective for the vibration components along the axis Y and the axis Z.
  • the second arm portion 52B is deformed so as to rotate around the first axis A1 around the first bent portion B1, and the third arm portion 52C is rotated around the first axis A1 around the second bent portion B2.
  • the rotation angles of the second arm portion 52B and the third arm portion 52C with respect to the first axis line A1 can be changed by deforming the second arm portion 52C so as to rotate. Due to this change in the rotation angle, the second arm portion 52B and the third arm portion 52C are in a twisted state in response to vibration, and the joint portion between the connecting portion 52 and the motor connection terminal 31A, and the connecting portion 52 and the through hole 41C. It is possible to reduce the stress applied to the joint portion with.
  • the stress reduction due to the twisting of the second arm portion 52B and the third arm portion 52C is particularly effective for the vibration component along the axis X.
  • the connecting portion 52 and the motor connecting terminal 31A are joined to each other and the connecting portion 52 by appropriately deforming the connecting portion 52 in response to vibration having vibration components in a plurality of directions.
  • the stress applied to the joint portion between the through hole 41C and the through hole 41C can be reduced.
  • the other end of the second arm portion 52B and the through hole 41C, that is, the control board 41B are provided with a joint portion at a position lower than the first arm portion 52A corresponding to the top of the connecting portion 52.
  • the arrangement area of the control board 41B can be kept within the range of the connecting portion 50 in the axis Z direction.
  • the dimension of the electric compressor 100 including the control board 41B in the axis Z direction can be reduced.
  • the control board 41B is arranged beyond the range in the axis Z direction of the connecting portion 50, so that the electric compressor 100 The dimension in the axis Z direction becomes large.
  • a plurality of motor connection terminals 31A of the electric motor 30 project from the housing 10 that seals the compression mechanism 20 and the electric motor 30 that drives the compression mechanism 20 to the external space OS.
  • the plurality of through holes 41C included in the control board 41B that controls the electric motor 30 are electrically connected to the motor connection terminal 31A by a metal connecting portion 50.
  • the electric motor 30 and the control board 41B are electrically connected to each other, and the control board 41B controls the electric motor 30.
  • the plate-shaped joint portion 51 of the connection portion 50 has a joint surface 51A wider than the motor connection terminal 31A. Since the plate-shaped joint portion 51 has a larger area and heat capacity than the motor connection terminal 31A, it is possible to easily join the joint portion 51 and the motor connection terminal 31A by soldering or welding, and to obtain sufficient joint strength. can.
  • the axial connecting portion 52 has a bent shape. Therefore, when the control substrate 41B is displaced relative to the housing 10 due to the vibration of the compression mechanism 20, the first bent portion B1 formed by the first arm portion 52A and the second arm portion 52B expands or contracts due to elastic deformation. However, it is possible to prevent excessive stress from being applied to the motor connection terminal 31A of the electric motor 30 and the through hole 41C of the control board 41B.
  • the first arm portion 52A is arranged at a position sandwiched between the plate-shaped joint portion 51 and the control board 41B, the first arm portion 52A is attached to the joint portion 51 and the control board 41B.
  • the connecting portion 52 is arranged at a position where it is not sandwiched, the area occupied by the connecting portion 52 can be reduced and the size can be reduced.
  • the axial connecting portion 52 is bent in two places. Have. Therefore, when the control substrate 41B is displaced relative to the housing 10 due to the vibration of the compression mechanism 20, the first bent portion B1 and the first arm portion 52A formed by the first arm portion 52A and the second arm portion 52B become Both the second bent portion B2 formed by the third arm portion 52C expand or contract due to elastic deformation, and excessive stress may be applied to the motor connection terminal 31A of the electric motor 30 and the through hole 41C of the control board 41B. It is suppressed.
  • a first gap 53A having a predetermined distance or more is formed between the joint portion 51 and the first arm portion 52A. Therefore, even if the first arm portion 52A is elastically deformed by the vibration of the compression mechanism 20, if the fluctuation of the distance between the joint portion 51 and the first arm portion 52A due to the vibration is less than a predetermined distance, the joint portion 51 and the joint portion 51 The connecting portion 52 can be elastically deformed without contacting the first arm portion 52A.
  • a second gap 53B having a predetermined distance or more is formed between the joint portion 51 and the third arm portion 52C. Therefore, even if the first arm portion 52A is elastically deformed by the vibration of the compression mechanism 20, if the fluctuation of the distance between the joint portion 51 and the first arm portion 52A due to the vibration is less than a predetermined distance, the joint portion 51 and the joint portion 51 The connecting portion 52 can be elastically deformed without contacting the first arm portion 52A.
  • the connecting portion 52 is partially different from that in the first embodiment. That is, as shown in FIG. 8, the connecting portion 52 according to the second embodiment extends along the first arm portion 52A extending along the first axis A1 and the second axis A2 orthogonal to the first axis A1. It has a second arm portion 52B and. This is the same as the first embodiment. Further, the connecting portion 52 includes a fourth arm portion 52D extending along the fourth axis A4 parallel to the first axis A1 and a fifth arm portion 52E extending along the fifth axis A5 orthogonal to the first axis A1. Have.
  • the second embodiment since the control board 41B can be placed at a position lower than the top of the connecting portion 52, the axis Z direction of the electric compressor 100 including the control board 41B is the same as in the first embodiment. The dimensions can be reduced.
  • the second embodiment has the following effects.
  • the fifth arm portion 52E extends upward from the tip of the fourth arm portion 52D.
  • the control board 41B is joined to the fifth arm portion 52E via the through hole 41C as the second connection terminal, and the tip of the fifth arm portion 52E is directed upward. Therefore, according to the second embodiment, there is no restriction on the timing of mounting the control board 41B on the fifth arm portion 52E, and the soldering work is easy.
  • the connecting portion 52 of the third embodiment is different from the connecting portion 52 of the second embodiment in that the insulator 31C is omitted.
  • the periphery of the terminal accommodating case 31B is covered with a shield 31D made of an electrically insulating material, for example, a resin material including rubber.
  • the third embodiment since the control board 41B can be placed at a position lower than the top of the connecting portion 52, the axis Z direction of the electric compressor 100 including the control board 41B is the same as in the first embodiment.
  • the dimensions can be reduced.
  • the third embodiment has the following effects.
  • the space distance can be shortened by covering the periphery of the terminal accommodating case 31B with a shield 31D made of an electrically insulating material. Therefore, the dimensions in the plane direction can be suppressed in addition to the height direction.
  • the electric compressor (100) includes a housing (10) forming a closed internal space (IS), a compression mechanism (20) housed in the internal space (IS), and a compression mechanism (20).
  • a connection portion (50) made of a conductor that is electrically connected is provided.
  • the electric motor (30) has a plurality of first connection terminals (31A) exposed to the outside of the housing (10), and the control board (41B) has a plurality of second connection terminals (41C).
  • connection portion (50) is joined to a joint portion (51) to be joined to the first connection terminal (31A), one end to the joint portion (51) and the other end to the second connection terminal (41C). It has a connecting portion (52) and a connecting portion (52). The joint portion between the second connection terminal (41C) and the connecting portion (52) is provided at a position lower than the top of the connecting portion (52).
  • control board 41B can be placed at a position lower than the top of the connecting portion 52, the dimension of the electric compressor 100 including the control board 41B in the axis Z direction can be reduced.
  • the connecting portion (52) preferably includes a first arm portion (52A) extending along the first axis (A1) and a first arm portion. It has a second arm (52B) that is connected to (52A), intersects the first axis (A1), and descends from the first arm (52A) along the second axis (A2).
  • the second arm portion (52B) is joined to the second connection terminal (41C).
  • the connecting portion since the first arm portion (52A) and the second arm portion (52B) connected to the first arm portion (52A) extend in the intersecting direction, the connecting portion has a bent shape. Have. Therefore, when the control substrate (41B) is displaced relative to the housing (10) due to the vibration of the compression mechanism (20), the first arm portion (52A) and the second arm portion (52B) are bent. It is suppressed that the portion expands or contracts due to elastic deformation, and excessive stress is applied to the first connection terminal (31A) of the electric motor (30) and the second connection terminal (41C) of the control board (41B).
  • the fourth arm portion (52D) connected to the second arm portion (52B) and extending along the first axis (A1).
  • the fifth arm portion (52E) is joined to the second connection terminal (41C).
  • the control board 41B is joined to the fifth arm portion 52E via the through hole 41C as the second connection terminal, and the tip of the fifth arm portion 52E is directed upward. Therefore, according to the third aspect, in addition to the time when the control board 41B is attached to the fifth arm portion 52E is not restricted, the soldering work is easy.
  • the connecting portion (52) is connected to the first arm portion (52A) and intersects the first axis (A1) with the third axis (A3).
  • the connecting portion (52) has a third arm (52C) extending along.
  • the connecting portion since the first arm portion (52A) and the third arm portion (52C) connected to the first arm portion (52A) extend in the intersecting direction, the connecting portion has a bent shape. It has two places. Therefore, when the control substrate (41B) is displaced relative to the housing 10 due to the vibration of the compression mechanism (20), the bent portion formed by the first arm portion (52A) and the second arm portion (52B) is formed. Both the bent portion formed by the first arm portion (52A) and the third arm portion (52C) expand or contract due to elastic deformation, and the first connection terminal (31A) of the electric motor (30) and the control substrate. Excessive stress is suppressed from being applied to the second connection terminal (41C) of (41B).
  • one end of the first arm portion (52A) is connected to the second arm portion (52B) and the other end is connected to the third arm portion (52C).
  • the second arm portion (52B) is connected to the first arm portion (52A) at one end and the second arm portion (41C) at the other end, and is connected to the third arm portion (41C).
  • 52C) has one end connected to the joint portion (51) and the other end connected to the first arm portion (52A).
  • the second arm portion (52B) and the third arm portion (52C) are connected to the first arm portion (52A), and the second arm portion (52B) is connected. Further, it is connected to the second connection terminal (41C) of the control board (41B), and the third arm portion (52C) is joined to the joint portion (51). Since the joint portion (51) and the control board (41B) have three arms and two bent portions connecting them, elastic deformation of the two bent portions causes the first of the electric motor (30). It is possible to prevent excessive stress from being applied to the first connection terminal (31A) and the second connection terminal (41C) of the control board (41B).
  • the electric motor (30) is preferably composed of a metal accommodating case accommodating the first connection terminal and an electrically insulating material covering the accommodating case. It is provided with a shield to be used.
  • the electric compressor according to the sixth aspect in addition to the effect of the electric compressor according to the second aspect, the following effects are exhibited.
  • a shield 31D made of an electrically insulating material By covering the periphery of the terminal accommodating case 31B with a shield 31D made of an electrically insulating material, the space distance can be shortened, so that the dimensions in the plane direction can be suppressed in addition to the height direction.

Abstract

Ce compresseur électrique est pourvu d'une carte de commande pour commander un moteur électrique et d'une partie de connexion pour connecter électriquement le moteur électrique et la carte de commande. Le moteur électrique comporte une pluralité de premières bornes de connexion exposées à l'extérieur d'un boîtier, et la carte de commande comporte une pluralité de secondes bornes de connexion. La partie de connexion comporte des parties de joint qui sont jointes aux premières bornes de connexion, et des parties de liaison dont une extrémité est reliée à l'une des parties de joint et l'autre extrémité est jointe à la seconde borne de connexion correspondante. Une partie de jonction entre la seconde borne de connexion et la partie de liaison est disposée dans une position inférieure à une partie sommet de la partie de liaison.
PCT/JP2021/001456 2020-01-28 2021-01-18 Compresseur électrique WO2021153307A1 (fr)

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JP2020-011362 2020-01-28
JP2020011362A JP2021116760A (ja) 2020-01-28 2020-01-28 電動圧縮機

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WO2021153307A1 true WO2021153307A1 (fr) 2021-08-05

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JP (1) JP2021116760A (fr)
WO (1) WO2021153307A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010065625A (ja) * 2008-09-11 2010-03-25 Toyota Industries Corp 電動圧縮機
JP2017033876A (ja) * 2015-08-05 2017-02-09 株式会社デンソー 機電一体装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010065625A (ja) * 2008-09-11 2010-03-25 Toyota Industries Corp 電動圧縮機
JP2017033876A (ja) * 2015-08-05 2017-02-09 株式会社デンソー 機電一体装置

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