JP2005344689A - Controller of electric compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce manufacturing cost by reducing the number of parts and increase vibration resistance. <P>SOLUTION: In this controller of an electric compressor, the substrate 12 of an electric motor driving circuit is fixed to the inside lower part of a housing 11, and electric terminals 14a and 14b are fitted to the upper surface of the substrate. A laminated type film capacitor 15 is fixed to the inside upper part of the housing 11, and connection terminals 18a and 18b are fitted to the lower part of the capacitor. The connection terminals 18a and 18b are positioned oppositely to the electric terminals 14a and 14b, and both terminals are formed to be fixed in a contact state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a control device for driving and controlling an electric motor in an electric compressor in which a compression unit is driven by the electric motor.

  In a general electric compressor, an electric motor is arranged at one end and a compression mechanism is arranged at the other end inside the compressor housing, and the electric motor and the compression mechanism are connected via a rotating shaft. Linked to each other. That is, the electric motor is fixed by the rotor being fixed to the rotating shaft and the stator being press-fitted into the housing. A scroll type compression mechanism, which is one of the compression mechanisms, includes a fixed scroll having a spiral wrap and a turning scroll having a spiral wrap, and the fixed scroll and the turning scroll are mutually separated by a predetermined distance. A plurality of compression chambers are formed by decentering and shifting the angle by 180 degrees to engage the spiral wraps of both.

  Therefore, when the electric motor is driven, the orbiting scroll of the scroll type compression mechanism is driven through the rotating shaft, and the refrigerant gas is taken into the suction chamber in the housing, and this refrigerant gas is compressed between the spiral wraps. It is discharged after being compressed in the chamber.

  In such an electric compressor, a control device having a motor drive circuit for driving and controlling the electric motor is required. Generally, this control device is adjacent to the outside of the compressor housing or separately. Is provided. The control device for the electric compressor is composed of a power board and a capacitor constituting an inverter circuit. When this electric compressor is mounted on a vehicle and used, vibration during driving of the vehicle and heat from the engine Care must be taken not to adversely affect the controller. The control device for the electric compressor is equipped with a cooling device because it generates heat when energized.

  In addition, as a prior art regarding the assembly structure of the electrical components installed in the outdoor unit of the air conditioner or the electrical component box in the indoor unit, for example, there is one described in Patent Document 1 below, and an inverter in the electric compressor As a technique for cooling a part of the capacitor, for example, there is one described in Patent Document 2 below.

JP-A-11-287506 JP 2002-188573 A

  By the way, when the above-described electric compressor is mounted on a vehicle and used, it is necessary to firmly fix a power board, a capacitor, and the like so that vehicle vibration does not adversely affect the control device. As a result, the number of parts and the number of assembling steps in the control device are increased, resulting in a problem that the manufacturing cost is increased and the maintainability is lowered. In addition, an isolation structure and a cooling device for protecting the control device from external heat are necessary. Also in this respect, there is a problem that the structure becomes complicated and the manufacturing cost increases.

  In Patent Document 1 described above, a part of the composite molded substrate is exposed from the resin molded body to form a terminal press-fit portion where elastic deformation occurs, and the lead terminal of the terminal press-fit portion is held by elastic restoring force. The lead terminal and the lead frame are electrically connected, but no countermeasures against vibration resistance are taken. In Patent Document 2, the smoothing capacitor is cooled by the low-pressure refrigerant flowing through the long groove of the base plate by fixing the capacitor case to the base plate for mounting the circuit components of the inverter part through a good heat conducting member. As in Patent Document 1, no measures are taken against vibration resistance, and the structure is complicated.

  The present invention solves the above-described problems, and an object of the present invention is to provide a control device for an electric compressor that reduces the manufacturing cost by reducing the number of parts and improves the vibration resistance.

  In order to achieve the above object, a control device for an electric compressor according to a first aspect of the present invention is a control device for an electric compressor for driving and controlling an electric motor that drives a compression section, and has a hollow housing. And a substrate for the electric motor drive circuit is provided at one end in the housing, and a multilayer film capacitor is provided at the other end in the housing, and an electrical terminal of the substrate is connected to the multilayer film capacitor. It is characterized by being directly connected to the connection terminal.

  In the control device for the electric compressor according to claim 2, the electrical terminal is fixed to the upper surface of the substrate, while the connection terminal is in contact with the lower surface of the multilayer film capacitor so as to face the electrical terminal. Is featured.

  In the control device for the electric compressor according to claim 3, the electric terminal is fixed to the end portion of the substrate, while the tip end portion of the connection terminal of the multilayer film capacitor holds the end portion of the substrate. Thus, the electric terminal is connected.

  In the control device for an electric compressor according to claim 4, the lower surface of the substrate is fixed to the inner wall surface of the housing via a support member, while the multilayer film capacitor has a rectangular parallelepiped shape, and the four corners are the housing. It is characterized by being fixed to the attachment part formed in the inner wall surface of the.

  In a control device for an electric compressor according to a fifth aspect of the present invention, the substrate is fitted and held in a groove formed in an inner wall surface of the housing.

  In the control device for the electric compressor according to claim 6, the housing has a box-shaped main body having an opening, and a lid fixed to the main body so as to close the opening. The multilayer film capacitor is characterized in that an outer peripheral flange is sandwiched and fixed between the main body and the lid.

  The control device for an electric compressor according to a seventh aspect of the invention is characterized in that a cooling means for cooling the housing is provided.

  In the control device for an electric compressor according to an eighth aspect of the present invention, a heat transfer member extending from the housing is connected to a connection portion between the electric terminal and the connection terminal.

  According to the control device for the electric compressor of the first aspect of the present invention, the substrate for the electric motor drive circuit is provided at one end in the hollow housing, and the laminated film capacitor is provided at the other end in the housing. Since the electrical terminal of the substrate is directly connected to the connection terminal of the multilayer film capacitor, the substrate is fixed to one end of the housing, and the multilayer film capacitor is fixed to the other end. The electrical terminal of the substrate and the multilayer film Capacitor connection terminals are directly connected, and the manufacturing cost can be reduced by reducing the number of components, and the substrate and multilayer film capacitor are integrated and firmly supported by the housing, so vibration resistance Can be improved.

  According to the control device for the electric compressor of the second aspect of the invention, since the electric terminal is fixed on the upper surface of the substrate, the connection terminal is provided on the lower surface of the multilayer film capacitor so as to be opposed to the electric terminal. The substrate and the multilayer film capacitor can be easily connected without providing a lead wire or a copper connecting member.

  According to the control device for the electric compressor of the invention of claim 3, while the electric terminal is fixed to the end portion of the substrate, the end portion of the connection terminal of the laminated film capacitor sandwiches the end portion of the substrate so that the electric terminal Therefore, the end portion of the substrate is supported by the connection terminal of the laminated film capacitor, and the vibration resistance can be improved.

  According to the control device for the electric compressor of the invention of claim 4, the lower surface of the substrate is fixed to the inner wall surface of the housing via the support member, while the laminated film capacitor is formed in a rectangular parallelepiped shape and the four corners are formed on the inner wall surface of the housing. Since the substrate is fixed to the housing via the support member, the four corners of the multilayer film capacitor are fixed to the housing, and the substrate and the multilayer film capacitor are securely supported and resistant. The vibration property can be improved.

  According to the control device for the electric compressor of the fifth aspect of the invention, since the base is fitted and held in the groove formed in the inner wall surface of the housing, the end portion of the substrate is supported by the housing, and the The vibration property can be improved.

  According to the control device for an electric compressor of the invention of claim 6, the housing is constituted by a main body having a box shape with an opening and a lid fixed to the main body so as to close the opening. Since the outer peripheral flange portion of the multilayer film capacitor is sandwiched and fixed between the main body and the lid, the waterproof property of the multilayer film capacitor can be improved and the number of assembling steps can be reduced.

  According to the control device for the electric compressor of the seventh aspect of the invention, since the cooling means for cooling the housing is provided, the motor drive circuit can be efficiently cooled via the housing.

  According to the control device for the electric compressor of the eighth aspect of the invention, since the heat transfer member extended from the housing is connected to the connection portion between the electric terminal and the connection terminal, the cooling area is expanded to increase the motor drive circuit. Cooling efficiency can be improved.

  Exemplary embodiments of a control device for an electric compressor according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a longitudinal sectional view of a control device for an electric compressor according to a first embodiment of the present invention, and FIG. 2 is a horizontal sectional view of the control device for the electric compressor according to the first embodiment.

  The electric compressor used in the present embodiment functions as an electric compressor for an air conditioner mounted on a vehicle. That is, the vehicle air conditioner is configured by connecting an electric compressor (electric compressor), a condenser, an expansion valve, and an evaporator through a refrigerant pipe, and this electric compressor is arranged in the vicinity of the engine in the engine room. A control device for driving and controlling the electric motor of the compression mechanism is disposed separately from the electric compressor.

  Therefore, the control device drives and controls the electric compressor, and sucks and compresses the low-pressure refrigerant gas to obtain a high-temperature and high-pressure refrigerant gas, and the condenser liquefies by cooling the refrigerant gas with running wind or a fan, The expansion valve suddenly expands this high-pressure liquid refrigerant and makes it easy to atomize, and the evaporator takes heat from the gas by surrounding fins to generate cooling air, while the liquid refrigerant takes a lot of heat and again reduces the pressure to low pressure. It becomes refrigerant gas and is returned to the electric compressor.

  In the control device for the electric compressor of the present embodiment described above, as shown in FIGS. 1 and 2, the housing 11 has a hollow shape, and is constituted by a box and a lid having an opening (not shown). . In the lower part of the housing 11, the substrate 12 is placed in a horizontal state by a plurality of cylindrical spacers (support members) 13 and fixed to the housing 11 by fixing bolts (not shown). The substrate 12 constitutes a drive circuit for an electric motor of an electric compressor, and is mounted with a processing device 12a and a control circuit 12b and electric terminals 14a and 14b on side portions.

  In addition, a laminated film capacitor 15 is disposed in the upper portion of the housing 11, and four flange portions 15 a are placed on each mounting portion 16 formed on the side wall of the housing 11 and fixed by fixing bolts 17. ing. The multilayer film capacitor 15 has a rectangular parallelepiped shape in which a plastic film is used as a dielectric and is laminated in multiple layers, and two connection terminals 18a and 18b having a flat plate shape are provided at the bottom.

  And each electrical terminal 14a, 14b provided in the upper surface of the board | substrate 12 is located so that each connection terminal 18a, 18b provided in the lower surface of the multilayer film capacitor 15 may oppose, and both contact In this state, it is fixed with retaining screws 19a and 19b. In addition, when insulation is required for the connection portions of the electrical terminals 14a and 14b and the connection terminals 18a and 18b, an insulating agent is applied or an insulating sheet is attached.

  Further, adjacent to the lower portion of the housing 11, heat radiation fins 20 are provided as cooling means for cooling the housing 11. Therefore, the heat generated when the electric motor drive circuit is energized can be removed from the housing 11 by the radiating fins 20 and cooled.

  As described above, in the control device for the electric compressor according to the first embodiment, the electric motor drive circuit board 12 is fixed to the lower part of the housing 11 and the electric terminals 14a and 14b are mounted on the upper surface, while the housing 11 The laminated film capacitor 15 is fixed to the upper part, the connection terminals 18a and 18b are attached to the lower part, the connection terminals 18a and 18b are opposed to the electric terminals 14a and 14b, and both It is fixed in contact.

  Accordingly, the substrate 12 is fixed to the lower part of the housing 11, while the four corners of the multilayer film capacitor 15 are fixed to the upper part of the housing 11, and the electric terminals 14a and 14b and the connection terminals 18a and 18b are connected. As a result, the substrate 12 and the multilayer film capacitor 15 can be reliably supported, and the vibration resistance can be improved.

  Further, the electrical terminals 14a and 14b of the substrate 12 and the connection terminals 18a and 18b of the multilayer film capacitor 15 are directly connected, so that there is no need for a lead wire or a copper connection member, and the number of parts and assembly are reduced. By reducing the man-hours, the manufacturing cost can be reduced, the loss due to resistance can be reduced, and the ripple resistance can be improved. Furthermore, the heat radiating fins 20 are provided integrally with the housing 11, and heat generation from the substrate 12 and the multilayer film capacitor 15 can be suppressed. Therefore, in the case of a control device that allows a large current to flow, the suppression of heat generation becomes significant, and the efficiency and reliability can be improved.

  FIG. 3 is a longitudinal sectional view of the control device for the electric compressor according to the second embodiment of the present invention, and FIG. 4 is a horizontal sectional view of the control device for the electric compressor according to the second embodiment. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated in the Example mentioned above, and the overlapping description is abbreviate | omitted.

  In the control apparatus for the electric compressor according to the second embodiment, as shown in FIGS. 3 and 4, the substrate 12 is fixed to the lower portion of the housing 11 via a plurality of spacers 13, and is formed on the side of the upper surface portion of the substrate 12. Electrical terminals 14a and 14b are mounted. A laminated film capacitor 15 is disposed on the upper portion of the housing 11, each flange portion 15a is fixed to each mounting portion 16 of the housing 11, and connection terminals 18a and 18b are provided on the lower portion. The electric terminals 14a and 14b of the substrate 12 and the connection terminals 18a and 18b of the multilayer film capacitor 15 are fixed in a connected state.

  A heat radiating fin 20 for cooling the housing 11 is integrally provided at a lower portion of the housing 11. In addition, on the inner wall surface of the housing 11, heat transfer members 21 a and 21 b each having a flat plate shape are integrally formed above the connection portions between the electrical terminals 14 a and 14 b and the connection terminals 18 a and 18 b described above. Connected to the connection terminals 18a and 18b (or the electrical terminals 14a and 14b). The housing 11 and the heat transfer members 21a and 21 are preferably made of a material having high heat transfer efficiency such as aluminum.

  Therefore, when the electric motor drive circuit is energized, the heat generated from the substrate 12 and the laminated film capacitor 15 is cooled by the heat radiating fins 20 through the housing 11. In this case, since the heat transfer members 21a and 21b integral with the housing 11 are in contact with the connection terminals 18a and 18b of the multilayer film capacitor 15, the heat generating part can be directly cooled.

  As described above, in the control device for the electric compressor according to the second embodiment, the substrate 12 of the electric motor drive circuit and the multilayer film capacitor 15 are accommodated in the housing 11, and the radiating fins 20 are integrally formed with the housing 11. At the same time, the tips of the heat transfer members 21 a and 21 b formed integrally with the inner wall surface of the housing 11 are brought into contact with the connection terminals 18 a and 18 b of the multilayer film capacitor 15. Therefore, the heat generating part inside the housing 11 can be directly cooled by the heat transfer members 21a and 21b, and the cooling efficiency can be improved.

  In the second embodiment, the heat transfer members 21a and 21b are extended from the inner wall surface of the housing 11 and the tip ends are connected so as to contact the connection terminals 18a and 18b, but the tip ends of the heat transfer members 21a and 21b are used. May be connected to the electrical terminals 14a, 14b. Moreover, although the shape of the heat-transfer members 21a and 21b is a flat plate shape, it is not limited to this.

  FIG. 5 is a longitudinal sectional view of the control device for the electric compressor according to the third embodiment of the present invention, and FIG. 6 is a horizontal sectional view of the control device for the electric compressor according to the third embodiment. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated in the Example mentioned above, and the overlapping description is abbreviate | omitted.

  In the control device for the electric compressor according to the third embodiment, as shown in FIGS. 5 and 6, the substrate 12 is fixed to the lower portion of the housing 11 via a plurality of spacers 13, Electrical terminals 31a and 31b are mounted. A laminated film capacitor 15 is disposed on the upper portion of the housing 11, each flange portion 15a is fixed to each mounting portion 16 of the housing 11, and connection terminals 32a and 32b having L-shapes are provided on the lower side. ing. The connection terminals 32a and 32b have a bifurcated shape with an upper sandwiching piece 33a and a lower sandwiching piece 33b whose tips are vertically opposed to each other, and are connected to the electrical terminals 31a and 31b by sandwiching the end of the substrate 12. It is fixed in the state. In addition, what is necessary is just to connect each clamping piece 33a, 33b of the connection terminals 32a, 32b and the edge part of the board | substrate 12 by press-fit, caulking, screwing, etc.

  Therefore, in the control device for the electric compressor of the third embodiment, the substrate 12 is fixed to the lower portion of the housing 11, while the four corners of the multilayer film capacitor 15 are fixed to the upper portion of the housing 11. The tip ends of the connection terminals 32 a and 32 b of the mold film capacitor 15 are connected to the electrical terminals 31 a and 31 b with the end portion of the substrate 12 interposed therebetween. Therefore, the substrate 12 and the multilayer film capacitor 15 can be reliably supported, and the end portions of the substrate 12 can be supported by the connection terminals 32a and 32b, so that the vibration resistance can be improved.

  The connection terminals 32a and 32b of the multilayer film capacitor 15 are L-shaped, and the upper holding piece 33a and the lower holding piece 33b that are vertically opposed to each other are formed at the tip portion. However, the present invention is not limited to this structure. . For example, the upper clamping piece 33a and the lower clamping piece 33b of the connection terminals 32a and 32b in the multilayer film capacitor 15 are formed by shifting in the width direction, or two lower clamping pieces 33b are formed with respect to one upper clamping piece 33a. For example, it may be set as appropriate according to the shape of the substrate 11 and the positional relationship between the electrical terminals 31a and 31b.

  FIG. 7 is a longitudinal sectional view of the control device for the electric compressor according to the fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated in the Example mentioned above, and the overlapping description is abbreviate | omitted.

  In the control device for the electric compressor of the fourth embodiment, as shown in FIG. 7, the substrate 41 is fixed to the lower portion of the housing 11 via a plurality of spacers 13. In this case, the width of the substrate 41 is set to be slightly larger than the width inside the housing 11, and each end 41 a is fitted in a horizontal groove 42 formed on the inner wall surface of the housing 11. Electric terminals 14 a and 14 b are attached to the side of the upper surface of the substrate 41. A laminated film capacitor 15 is disposed on the upper portion of the housing 11, each flange portion 15a is fixed to each mounting portion 16 of the housing 11, and connection terminals 18a and 18b are provided on the lower portion. The electric terminals 14a and 14b of the substrate 42 and the connection terminals 18a and 18b of the multilayer film capacitor 15 are fixed in a connected state.

  Therefore, in the control device for the electric compressor of the fourth embodiment, the substrate 41 is fixed to the lower portion of the housing 11 and the end portion 41a is fitted and fixed to the groove portion 42, while the laminated film capacitor is used. The four corners 15 are fixed to the top of the housing 11, and the connection terminals 18 a and 18 b of the multilayer film capacitor 15 are connected to the electrical terminals 14 a and 14 b of the substrate 41. Therefore, the lower surface and the outer peripheral end of the substrate 41 can be firmly supported by the housing 11, and the vibration resistance can be further improved by suppressing the touch of the substrate 41.

  In the fourth embodiment, the end portion 41a of the substrate 41 is fitted into the groove portion 42 of the housing 11. However, in this case, the housing 11 is divided into left and right or front and rear, and the end portion 41a of the substrate 41 is changed. What is necessary is just to slide and fit in the groove part 42 of the housing 11. FIG.

  FIG. 8 is a longitudinal sectional view of the control device for the electric compressor according to the fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated in the Example mentioned above, and the overlapping description is abbreviate | omitted.

  In the control apparatus for the electric compressor of the fifth embodiment, as shown in FIG. 8, the substrate 41 is placed and fixed to the lower portion of the housing 11 via a support base (support member) 51, and each end portion 41 a. Is fitted in the groove 42 of the housing 11. Electric terminals 14 a and 14 b are attached to the side of the upper surface of the substrate 41. A laminated film capacitor 15 is disposed on the upper portion of the housing 11, each flange portion 15a is fixed to each mounting portion 16 of the housing 11, and connection terminals 18a and 18b are provided on the lower portion. The electric terminals 14a and 14b of the substrate 42 and the connection terminals 18a and 18b of the multilayer film capacitor 15 are fixed in a connected state.

  Therefore, in the control device for the electric compressor of the fifth embodiment, the substrate 41 is fixed to the lower portion of the housing 11 via the support base 51, and the end portion 41a is fitted and fixed to the groove portion 42. On the other hand, the four corners of the multilayer film capacitor 15 are fixed to the upper portion of the housing 11, and the connection terminals 18 a and 18 b of the multilayer film capacitor 15 are connected to the electrical terminals 14 a and 14 b of the substrate 41. Therefore, the lower surface and the outer peripheral end of the substrate 41 can be firmly supported by the housing 11, and the vibration resistance can be further improved by suppressing the touch of the substrate 41.

  In the fifth embodiment, the substrate 41 is fixed to the lower portion of the housing 11 via the support base 51. However, even if the support base 51 is formed integrally with the housing 11, it is fixed separately. You may do it.

  FIG. 9 is a longitudinal sectional view of the control device for the electric compressor according to the sixth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated in the Example mentioned above, and the overlapping description is abbreviate | omitted.

  In the control apparatus for the electric compressor of the sixth embodiment, as shown in FIG. 9, the housing 61 has a hollow shape, a box-shaped main body 62 having an opening on the upper side, and a main body 62 so as to close the opening. And a lid 63 fixed to the lid. And the board | substrate 12 is fixed to the lower part in this housing 61 via the some spacer 13, and the electrical terminals 14a and 14b are mounted | worn with the side part of the upper surface.

  The multilayer film capacitor 64 is integrally formed with a flange portion 64 a on the outer peripheral portion, and is placed on the upper portion of the main body 62 of the housing 61, and the lid 63 is placed on the upper portion of the multilayer film capacitor 64. . Seal members 65 and 66 are attached to the upper surface of the main body 62 and the lower surface of the lid 63, and the seal members 65 and 66 are in contact with the upper and lower surfaces of the flange portion 64a of the multilayer film capacitor 64. The laminated film capacitor 64 is sandwiched and fixed between the main body 62 and the lid 63 by a fixing bolt 17 (not shown). The laminated film capacitor 64 is provided with two connecting terminals 18a and 18b having a flat plate shape at the bottom, and the electric terminals 14a and 14b of the substrate 12 are connected to the connecting terminals 18a and 18b.

  Therefore, in the control device for the electric compressor of the sixth embodiment, the housing 61 is constituted by the main body 62 and the lid body 63, and the flange portion 64 a of the multilayer film capacitor 64 is constituted by the main body 62 and the lid body 63. The seal members 65 and 66 are interposed and fixed therebetween. Therefore, the multilayer film capacitor 64 can be easily fixed to the housing 61 and the waterproof property can be improved.

  In each of the above-described embodiments, the substrate is fixed to the lower part and the laminated film capacitor is fixed to the upper part in the housing, but the positional relationship between the two is not limited to the upper and lower sides. The mold film capacitor may be provided in reverse, or may be provided opposite to the left and right or front and rear. Further, the positions of the electrical terminals provided on the substrate and the connection terminals provided on the multilayer film capacitor are not limited to the above-described embodiments.

  The control device for the electric compressor according to the present invention reduces the manufacturing cost by directly connecting the substrate of the drive circuit for the electric motor and the laminated film capacitor, and is applicable to any kind of electric compressor. can do.

It is a longitudinal cross-sectional view of the control apparatus of the electric compressor which concerns on Example 1 of this invention. FIG. 3 is a horizontal sectional view of the control device for the electric compressor according to the first embodiment. It is a longitudinal cross-sectional view of the control apparatus of the electric compressor which concerns on Example 2 of this invention. It is a horizontal sectional view of the control device for the electric compressor of the second embodiment. It is a longitudinal cross-sectional view of the control apparatus of the electric compressor which concerns on Example 3 of this invention. FIG. 6 is a horizontal sectional view of a control device for an electric compressor according to a third embodiment. It is a longitudinal cross-sectional view of the control apparatus of the electric compressor which concerns on Example 4 of this invention. It is a longitudinal cross-sectional view of the control apparatus of the electric compressor which concerns on Example 5 of this invention. It is a longitudinal cross-sectional view of the control apparatus of the electric compressor which concerns on Example 6 of this invention.

Explanation of symbols

11, 61 Housing 12, 41 Substrate 13 Spacer (support member)
14a, 14b, 31a, 31b Electric terminal 15, 64 Multilayer film capacitor 18a, 18b, 32a, 32b Connection terminal 20 Radiation fin (cooling means)
21a, 21b Heat transfer member 42 Groove 51 Support base (support member)
62 box 63 lid

Claims (8)

  A control device for an electric compressor for driving and controlling an electric motor that drives a compression unit, wherein a housing having a hollow shape and a substrate of the electric motor drive circuit are provided at one end of the housing, A control apparatus for an electric compressor, wherein a multilayer film capacitor is provided at the other end in the housing, and an electric terminal of the substrate is directly connected to a connection terminal of the multilayer film capacitor.   2. The control device for an electric compressor according to claim 1, wherein the electrical terminal is fixed to an upper surface of the substrate, and the connection terminal is in contact with the lower surface of the multilayer film capacitor so as to face the electrical terminal. An electric compressor control device provided.   2. The control device for an electric compressor according to claim 1, wherein the electric terminal is fixed to an end portion of the substrate, while a tip portion of the connection terminal of the multilayer film capacitor sandwiches an end portion of the substrate. A control device for an electric compressor, wherein the control device is connected to the electric terminal.   4. The control device for an electric compressor according to claim 1, wherein a bottom surface of the substrate is fixed to an inner wall surface of the housing via a support member, and the laminated film capacitor is a rectangular parallelepiped shape. 5. And the four corners are fixed to attachment portions formed on the inner wall surface of the housing.   5. The electric compressor control device according to claim 1, wherein the substrate is fitted and held in a groove formed on an inner wall surface of the housing. 6. Control device.   The control apparatus for an electric compressor according to claim 1, wherein the housing includes a box-shaped main body having an opening, and a lid fixed to the main body so as to close the opening. The multilayer film capacitor has an outer peripheral flange portion sandwiched and fixed between the main body and the lid body.   2. The control apparatus for an electric compressor according to claim 1, further comprising cooling means for cooling the housing.   The control apparatus for an electric compressor according to claim 1, wherein a heat transfer member extending from the housing is connected to a connection portion between the electric terminal and the connection terminal.

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