JP2005117708A - Ac motor integrating control means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AC motor integrating a control means and exhibiting excellent mountability and collision safety. <P>SOLUTION: The AC motor integrating a control means comprises a motor generator 2 (AC motor), a controller 3, an inverter case 4, a heat slinger 5, a connector 6, and a power supply terminal 7. The connector 6 is secured to the upper sidewall face 42a at the protruding wall 42 of the inverter case 4, and the power supply terminal 7 is arranged on the lower sidewall face 42b at the protruding wall 42 of the inverter case 4. According to the arrangement, the size is reduced and mountability on vehicle is enhanced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a control means integrated AC motor.

  In recent years, so-called idle stop vehicles that stop idling of an engine when a vehicle stops due to a signal or the like are increasing from the viewpoint of preventing air pollution due to exhaust gas of the vehicle and saving fuel. In this idle stop vehicle, securing an engine drive source becomes a problem when starting after an idle stop. Therefore, a motor generator (motor generator) in which an alternator (generator) is provided with the function of an AC motor (electric motor) is used. This motor generator generates driving force for driving the engine by an inverter circuit that converts and supplies DC power of the battery into AC power and a control circuit that controls the inverter circuit. The inverter circuit and the control circuit are provided separately from the motor generator, and are connected to terminals or connectors provided in the motor generator via a wire harness.

By the way, the alternating current generator for vehicles provided with the connector for connecting with each part of vehicles is indicated by JP, 2002-142423, A. This vehicle alternator includes a connector disposed on a rear bracket with an opening facing radially outward. This connector is composed of an S terminal for battery voltage monitoring and an L terminal for supplying a current for initial excitation and lighting the lamp when power generation is abnormal such as overpower generation or overdischarge, and is connected to each part of the vehicle via a wire harness. Connected.
JP 2002-142423 A

  Furthermore, recently, with the demand for space saving in the vehicle engine room, it is strongly desired to reduce the size of the motor generator provided in the engine room. Therefore, a controller-integrated motor generator has been developed that reduces the size of the wiring harness by connecting the motor generator to a control device including an inverter circuit and a control circuit.

  In such a controller-integrated motor generator, an external terminal and a power supply terminal for connecting an inverter circuit and a control circuit to each part of an external vehicle are arranged radially outward as shown in Patent Document 1. If it is provided, the radial dimension will increase. Moreover, it is necessary to consider the external terminal and the power supply terminal so as not to receive interference at the time of a collision, and there are restrictions on mounting.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a control means-integrated AC motor excellent in mountability and collision safety.

  Therefore, the present inventor has intensively studied to solve this problem, and as a result of repeated trial and error, the external terminal and the power terminal are connected to the vehicle rear side from the front end of the inverter case and the vehicle front side from the rear end. As a result, the present invention has been completed.

  That is, the control means integrated AC motor according to claim 1 includes an AC motor having a rotating shaft and generating a rotational driving force by being supplied with AC power, and converting the DC power into AC power to convert the AC motor. An inverter circuit comprising an inverter circuit supplied to the inverter and a control circuit for controlling the inverter circuit, the control means being disposed adjacent to the axial direction of the AC motor, and an outer peripheral wall surrounding the control means and extending in the axial direction A case, a heat dissipating plate for fixing the control means and dissipating heat generated by the control means, and an external part disposed on the outer peripheral wall of the inverter case and connected to the control means for exchanging signals with the outside And a power supply terminal disposed on the outer peripheral wall of the inverter case and connected to the control means for supplying DC power. Is a control means-integrated AC motor that is mounted on a vehicle with the rotary shaft disposed parallel to the axle, and the external terminal and the power terminal are located on the vehicle front side of the inverter case. It is arranged on the vehicle front side from the rearmost end portion on the vehicle rear side and the vehicle rear side from the front end portion.

  The control means-integrated AC motor according to claim 2 is the control means-integrated AC motor according to claim 1, wherein the external terminal and the power supply terminal are below the uppermost end of the inverter case and It is arrange | positioned at the said outer peripheral wall of the said inverter case above a lowest end part.

  The control means-integrated AC motor according to claim 3 is the control means-integrated AC motor according to claim 2, wherein the inverter case further includes an arcuate arc wall having an opening angle greater than 180 °, a vehicle An outer peripheral wall that protrudes forward or rearward of the vehicle and has a convex wall whose height from the lowermost end to the uppermost end is lower than the height from the lowermost end to the uppermost end of the arc wall; The terminal and the power supply terminal are disposed on at least one of an upper wall surface and a lower wall surface of the convex wall of the inverter case.

  The control means integrated AC motor according to claim 4 is the control means integrated AC motor according to claim 3, wherein the external terminal is an upper wall surface or a lower wall surface of the convex wall of the inverter case. The power terminal is disposed on a wall surface on the upper wall surface or the lower wall surface of the convex wall of the inverter case where the external terminal is not disposed.

  The control means-integrated AC motor according to claim 5 is the control means-integrated AC motor according to claim 3 or 4, wherein the inverter case is disposed in a space surrounded by the convex wall. The control circuit is accommodated.

  The control means-integrated AC motor according to claim 6 is the control means-integrated AC motor according to claim 5, wherein the heat radiating plate fixes the control circuit and radiates the generated heat. It is characterized by comprising a heat radiating plate and an inverter circuit heat radiating plate that separates the control circuit heat radiating plate and fixes the inverter circuit and radiates the generated heat.

According to the control means integrated AC motor according to claim 1, the external terminal and the power supply terminal are:
The inverter case is disposed on the vehicle rear side from the foremost end portion and on the vehicle front side from the rearmost end portion. Therefore, the impact force from the front of the vehicle due to a vehicle collision or the like is first applied to the foremost end portion of the inverter case, and a part thereof is absorbed. The remaining impact force is applied to the external terminal and the power supply terminal. Further, even when an impact force is applied from the rear of the vehicle, similarly, a part of the impact force is absorbed by the rearmost end portion of the inverter case, so that the impact force is not directly applied to the external terminal and the power supply terminal. Therefore, the impact force applied to the external terminal and the power supply terminal can be relaxed, and safety at the time of collision can be ensured.

  According to the control means-integrated AC motor according to the second aspect, the external terminal and the power supply terminal are disposed on the outer peripheral wall of the inverter case excluding the uppermost end and the lowermost end of the inverter case. Therefore, compared to the case where the external terminal and the power supply terminal are respectively provided at the uppermost end and the lowermost end of the inverter case, the inverter case including the external terminal and the power supply terminal is connected from the lowermost end to the uppermost end. The height (the height in the vehicle vertical direction) can be reduced.

  According to the control unit-integrated AC motor according to claim 3, the tip wall surface of the convex wall of the inverter case is disposed on the vehicle front side or the vehicle rear side, and the upper wall surface or the lower wall surface of the convex wall is provided. At least one of them is provided with an external terminal and a power supply terminal. Therefore, the impact force from the front or the rear of the vehicle is first applied to the entire tip wall surface of the convex wall, and a part thereof is absorbed. The remaining slight impact force is applied to the external terminal and the power supply terminal. Therefore, the impact force applied to the external terminal and the power supply terminal can be further alleviated. Further, since the external terminal and the power supply terminal are arranged on the vehicle and / or downward, the length in the vehicle front-rear direction is not affected. Therefore, the length (length in the vehicle longitudinal direction) from the most distal end portion to the rearmost end portion of the inverter case including the external terminal and the power supply terminal can be shortened.

  According to the control means-integrated AC motor according to the fourth aspect, the external terminal and the power terminal are separately disposed on the upper wall surface and the lower wall surface of the convex wall of the inverter case. Therefore, even if an impact force is applied from the front of the vehicle and the external terminal and the power supply terminal are damaged, contact between both terminals can be prevented and safety can be ensured.

  According to the control means integrated AC motor according to the fifth aspect, the control circuit is disposed on the front side of the vehicle, and the inverter circuit is disposed on the rear side thereof. Therefore, the impact force from the front of the vehicle is first applied to a control circuit in which only a small current flows, and a part thereof is absorbed. The remaining impact force is applied to the inverter circuit through which a large current flows. Therefore, the impact force applied to the inverter circuit through which a large current flows can be mitigated, and the safety is further improved.

  According to the control means integrated AC motor according to the sixth aspect, the heat radiating plate is separated into the control circuit heat radiating plate and the inverter circuit heat radiating plate. Therefore, the impact force from the front of the vehicle is first applied to the control circuit radiator plate to which the control circuit is fixed, and a part thereof is absorbed. However, since the control circuit heat dissipation plate and the inverter circuit heat dissipation plate disposed on the vehicle rear side of the control circuit heat dissipation plate are separated, the impact force is difficult to transmit. Therefore, the impact force applied to the inverter circuit heat sink to which the inverter circuit through which a large current flows can be reduced. Further, heat transfer from the inverter circuit heat sink to the control circuit heat sink can be shielded, and the temperature rise of the control circuit can be suppressed.

  In this embodiment, an alternator is provided with an AC motor function, and a controller (control means) for driving the AC motor is integrated into a motor generator integrated with an idle stop vehicle (control means integrated AC motor). An example of

(First embodiment)
FIG. 1 is a partial cross-sectional view in the axial direction of a motor generator integrated with a controller in the first embodiment, FIG. 2 is a circuit diagram of the controller, and FIG. 3 is a perspective view of an inverter case and a heat sink. FIG. 4 is a perspective view of the inverter case, FIG. 5 is a perspective view of the inverter case in which the brush holder is incorporated, and FIG. 6 is a perspective view of the controller-integrated motor generator.

  First, a specific structure will be described with reference to FIG. 1, and details will be described with reference to FIGS. As shown in FIG. 1, a control device integrated motor generator 1 includes a motor generator 2 (AC motor), a control device 3, an inverter case 4, a heat sink 5, a connector 6 (external terminal), and a power supply terminal. 7.

  The motor generator 2 includes a front housing 20 and a rear housing 21, a stator 23, a rotor 24, a pulley 25, and a brush 26.

  The front housing 20 and the rear housing 21 are made of aluminum, and include end walls 20a and 21a and peripheral walls 20b and 21b extending in the axial direction from the peripheral portions of the end walls 20a and 21a, respectively. Cooling air suction holes 20c and 21c are formed in the end walls 20a and 21a, and cooling air blowing holes 20d and 21d are formed in the peripheral walls 20b and 21b, respectively.

  The rotary shaft 22 is rotatably supported via bearings 22a and 22b disposed on end walls 20a and 21a of the front housing 20 and the rear housing 21, respectively. A slip ring 22 c is disposed on the outer peripheral surface of one end of the rotating shaft 22.

  The stator 23 includes a stator core 23a made of a magnetic material and a stator coil 23b wound around the stator core 23a, and both end portions of the outer peripheral surface are the inner peripheral surfaces of the peripheral walls 20b and 21b of the front housing 20 and the rear housing 21. Each is fixed to the end. A lead wire 23c is connected to the end of the stator coil 23b, and is connected to a bus bar 41a described later.

  The rotor 24 includes a rotor core 24a made of a magnetic material and a field coil 24b wound around the rotor core 24a. Both ends of the field coil 24b are two slip rings provided at the end of the rotating shaft 22. 22c is electrically connected to each other. Further, centrifugal fans 24 c are fixed to both end faces of the rotor 24. The rotor 24 is fixed to the outer peripheral surface of the rotating shaft 22 and is disposed on the radially inner side of the stator 23 so as to face the inner peripheral surface of the stator core 23a.

  The pulley 25 is fixed to the end of the rotating shaft 22 protruding from the end wall 20 a of the front housing 20.

  The brush 26 is a prism body made of graphite, is supported by a brush holder 27 so as to be reciprocally movable in the radial direction, and is in contact with two slip rings 22 c provided at the end of the rotating shaft 22.

  As shown in FIG. 2, the control device 3 includes an inverter circuit 30, a field circuit 31, and a control circuit 32, and is connected to the outside through a power supply terminal 7 and a connector 6.

  The inverter circuit 30 is configured by connecting six field effect transistors 30a to 30f having a parasitic diode between a drain and a source in a three-phase bridge connection. The drains of the upper three field effect transistors 30 a to 30 c are connected to the power supply terminal 7, and the sources of the lower three field effect transistors 30 d to 30 f are grounded to the rear housing 21. Further, the three-phase output terminals TU, TV, and TW of the inverter circuit 30 are connected to the stator coil 23 b of the motor generator 2 and the control circuit 32.

  The field circuit 31 includes two field effect transistors 31a and 31b connected in series via the brush 26 and the slip ring 22c with the field coil 24b interposed therebetween, and a flywheel diode connected in parallel to the field coil 24b. 31c. The drain of the upper field effect transistor 31 a is connected to the power supply terminal 7, and the source of the lower field effect transistor 31 b is grounded to the rear housing 21.

  The control circuit 32 is connected to the six field effect transistors 30 a to 30 f constituting the inverter circuit 30 and the gates of the two field effect transistors 31 a and 31 b constituting the field circuit 31 and to the connector 6. Yes.

  Here, the connection between each element is performed by a bus bar 41a described later.

  As shown in FIG. 3, the inverter case 4 is made of resin and has an arcuate arc wall 40 with an opening angle of about 270 °, and a substantially annular end that extends radially inward from the inner peripheral surface of the arc wall 40. The plate 41 and a convex wall 42 projecting radially outward and formed integrally with the arc wall 40 are configured. Here, the distance L between the wall surface 42 a corresponding to the left side and the wall surface 42 b corresponding to the right side in FIG. 3 of the convex wall 42 is smaller than the outer diameter D of the arc wall 40. On the end face of the arc wall 40, a protrusion 40a having a through hole 40b through which the lead wire 23c of the stator coil 23b is inserted is formed integrally. A bus bar 41a for connecting the stator coil 23b and each element of the control device 3 and a brush terminal 41b for connecting the brush 26 are integrally formed on the end plate 41 by resin insert molding.

  The heat radiating plate 5 is made of a material having good thermal conductivity such as aluminum, for example, and has a substantially C-shaped inverter circuit heat radiating plate 50 and a substantially rectangular control circuit heat radiating disposed adjacent to the inverter circuit heat radiating plate 50. It is comprised from the board 51. FIG. On one surface of the inverter circuit heat dissipation plate 50, six field effect transistors 30a to 30f constituting the inverter circuit 30 are fixed with screws through insulating films 50a, respectively. A substrate (not shown) on which the control circuit 32 and the field circuit 31 are mounted is fixed to one surface of the control circuit heat radiation plate 51. A plurality of heat radiation fins 50b and 51a are disposed on the other surface of the inverter circuit heat radiation plate 50 and the control circuit heat radiation plate 51 in order to improve the heat radiation effect.

  As shown in FIGS. 3 and 4, the inverter circuit heat dissipation plate 50 to which the inverter circuit 30 is fixed is housed in a space surrounded by the arc wall 40 of the inverter case 4, and field effect transistors 30 a to 30 that constitute the inverter circuit 30. 30 f is electrically connected to a bus bar 41 a formed integrally with the end plate 41. The control circuit heat radiation plate 51 to which the control circuit 32 and the field circuit 31 are fixed is accommodated in a space surrounded by the convex wall 42 of the inverter case 4, and the substrate on which the control circuit 32 and the field circuit 31 are mounted. Is electrically connected to a bus bar 41 a formed integrally with the end plate 41.

  The connector 6 is fixed to the outer peripheral surface of the wall 42b on the right side in FIG. 3 of the convex wall 42 of the inverter case 4 by integral molding or the like, and is electrically connected to the control circuit 32 housed in the space surrounded by the convex wall 42. It is connected. The power supply terminal 7 is disposed on the outer peripheral surface of the wall 42a on the left side of the convex wall 42 of the inverter case 4 in FIG. 3, and is connected to the inverter circuit 30 accommodated in the space surrounded by the arc wall 40 via the bus bar 41a. Has been.

  As shown in FIG. 5, the brush holder 27 is made of a resin, a guide hole that supports the two prismatic brushes 26 so as to reciprocate in the radial direction, a terminal 27 a electrically connected to the brush 26, And a through hole 27b through which the rotary shaft 22 passes. The brush holder 27 is disposed in a through hole formed in the end plate 41 of the inverter case 4, and the terminal 27 a of the brush holder 27 is electrically connected to the brush terminal 41 b of the end plate 41 with a screw. Yes.

  As shown in FIG. 1, the inverter case 4 in which the control device 3, the brush 26, and the brush holder 27 are accommodated allows the rotating shaft 22 to be inserted into the through hole 27 b of the brush holder 27 and the brush 26 to be connected to the rotating shaft 22. It is fixed to the end wall 21a of the rear housing 21 in a state where it is in contact with a slip ring 22c provided at the end. The lead wire 23c of the stator coil 23b of the motor generator 2 is inserted into the through hole 40b formed in the protrusion 40a of the arc wall 40 of the inverter case 4 and electrically connected to the bus bar 41a protruding to the outer periphery of the arc wall 40. It is connected to the. Further, the inverter case 4 is covered with a cover 8 having a cooling air intake hole (not shown) formed on a side surface.

  As shown in FIG. 6, the controller-integrated motor generator 1 has the rotating shaft 22 in the direction X parallel to the axle, and the projecting tip wall 42c of the convex wall 42 of the inverter case 4 is placed in front of the vehicle. Arranged in the direction Y. Therefore, the wall surface 42a on which the power supply terminal 7 is disposed faces the vehicle upper side, and the wall surface 42b on which the connector 6 is fixed is disposed on the vehicle lower side.

  Next, a specific operation will be described with reference to FIGS. The operation mode includes a start mode and a power generation mode. The start mode is a mode in which the motor generator 2 functions as an AC motor and brings the engine from a stopped state to an operating state. The power generation mode is a mode in which the motor generator 2 functions as an alternator and generates power when the engine is operating.

  First, the start mode will be described. In this case, DC power supplied from the battery 9 via the power supply terminal 7 is supplied by the field circuit 31 to the field coil 24 b of the motor generator 2 based on a signal from the control circuit 32. Further, the inverter circuit 30 converts it into AC power and supplies it to the stator coil 23 b of the motor generator 2. As a result, a current flows through the stator coil 23b of the motor generator 2, and this current is interlinked with the magnetic flux generated by the field coil 24b to generate torque. That is, the motor generator 2 functions as an AC motor and generates a driving force. This driving force is transmitted to the crankshaft of the engine via a belt via a pulley 25 fixed to the end of the rotating shaft 22 of the motor generator 2, and the engine is started.

  Next, the power generation mode will be described. In this case, DC power supplied from the battery 9 via the power supply terminal 7 is supplied by the field circuit 31 to the field coil 24 b of the motor generator 2 based on a signal from the control circuit 32. Then, the driving force of the engine in the operating state is transmitted from the pulley fixed to the crankshaft to the pulley 25 fixed to the end of the rotating shaft 22 of the motor generator 2 via the belt. Due to this driving force, the rotor 24 of the motor generator 2 rotates. As a result, the magnetic flux generated by the field coil 24b wound around the rotor 24 is linked to the stator coil 23b at a certain speed, so that an AC induced voltage is generated. That is, the motor generator 2 functions as an alternator. This AC power is rectified by the parasitic diodes of the field effect transistors 30 a to 30 f of the inverter circuit 30, supplied to each load 10 via the power supply terminal 7, and charged to the battery 9.

  Further, when the rotor 24 of the motor generator 2 rotates, the centrifugal fan 24c fixed to both end faces of the rotor 24 generates a cooling air flow. This cooling air flow flows from the intake hole 20c of the front housing 20 to the blowout hole 20d. Further, from the through holes formed in the end plate 41 of the inverter case 4 through the space between the inverter circuit heat sink 50 and the heat sink fins 50b and 51a of the control circuit heat sink 51, which are separated from the intake holes of the cover 8, respectively. It flows to the blowout hole 21d through the intake hole 21c of the rear housing 21. And the control circuit 32, the inverter circuit 30, the brush 26, the field coil 24b, and the stator coil 23b are cooled.

  As described above, in the controller-integrated motor generator 1, the tip wall 42c of the convex wall 42 of the inverter case 4 is disposed on the front side of the vehicle, and the power supply terminal 7 is connected to the upper wall surface 42a of the convex wall 42. The connectors 6 are respectively disposed on the lower wall surface 42b. Therefore, the impact force from the front of the vehicle is first applied to the tip wall 42c of the convex wall 42 and a part thereof is absorbed. The remaining slight impact force is applied to the connector 6 and the power supply terminal 7. Therefore, the impact force applied to the connector 6 and the power supply terminal 7 can be relaxed, and safety can be ensured. Moreover, even if the connector 6 and the power supply terminal 7 are damaged, these contacts can be prevented.

  Further, the control circuit heat radiation plate 51 to which the control circuit 32 is fixed and the inverter circuit heat radiation plate 50 to which the inverter circuit 30 is fixed are separated, and the control circuit 32 is disposed on the front side of the vehicle, and the inverter circuit on the rear side. 30 is disposed. Therefore, the impact force from the front of the vehicle is first applied to the control circuit heat radiation plate 51 to which the control circuit 32 is fixed, and a part of it is absorbed. However, since the control circuit heat sink 51 and the inverter circuit heat sink 50 disposed on the vehicle rear side of the control circuit heat sink 51 are separated from each other, it is difficult for the impact force to be transmitted to the inverter circuit heat sink 50. . Therefore, the impact force applied to the inverter circuit heat sink 50 to which the inverter circuit 30 through which a large current flows is fixed can be reduced, and the safety is further improved. Further, the heat transfer from the inverter circuit heat sink 50 to the control circuit heat sink 51 can be shielded, and the temperature rise of the control circuit 32 can be suppressed.

Further, the convex wall 42 is lower than the height from the lowermost end portion to the uppermost end portion of the arc wall 40, and the power supply terminal 7 is connected to the upper wall surface 42a of the convex wall 42 and the connector 6 is connected to the lower wall surface 42b. Are arranged in the vertical direction. Therefore, the height of the inverter case 4 including the connector 6 and the power terminal 7 in the vehicle vertical direction can be reduced, and the length in the vehicle front-rear direction can also be reduced.

(Second Embodiment)
Next, the top view of the inverter case in 2nd Embodiment is shown in FIG. Here, only differences from the controller-integrated motor generator 1 according to the first embodiment will be described, and descriptions of common parts will be omitted except where they are required. In addition, the same code | symbol is attached | subjected and demonstrated to the element same as the said embodiment.

  As shown in FIG. 7, the inverter case 4 is made of resin, and has an arcuate arc wall 40 with an opening angle of about 270 °, and a protrusion that protrudes toward the vehicle front direction Y and is integrally formed with the arc wall 40. And a wall 42. The lower wall surface 42 b of the convex wall 42 is formed integrally with the wall surface at the lowermost end of the arc wall 40, and the upper wall surface 42 a of the convex wall 42 is below the uppermost end of the arc wall 40, The wall 40 is formed integrally with the wall surface. The connector 6 and the power supply terminal 7 are disposed on the upper wall surface 42 a of the convex wall 42 so as to be adjacent to the motor generator 2 in the axial direction.

  According to these 2nd Embodiment, the height of the vehicle up-down direction of the inverter case 4 containing the connector 6 and the power supply terminal 7 can be made still lower with respect to 1st Embodiment.

  In the above-described embodiment, the convex wall protrudes in the vehicle forward direction Y, but is not limited thereto. For example, the convex wall may be protruded toward the upper side of the vehicle, and the connector and the power terminal may be disposed on the tip wall of the convex wall or the wall surface on the rear side of the vehicle.

1 is a partial cross-sectional view in the axial direction of a motor generator integrated with a control device according to a first embodiment. The circuit diagram of the control apparatus in 1st Embodiment is shown. The perspective view of the inverter case and heat sink in 1st Embodiment is shown. The perspective view of the inverter case in which the heat sink in 1st Embodiment was integrated is shown. The perspective view of the inverter case in which the brush holder in 1st Embodiment was integrated is shown. The perspective view of the control device integrated motor generator in a 1st embodiment is shown. The top view of the inverter case in 2nd Embodiment is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Control device integrated motor generator 2 ... Motor generator 22 ... Rotating shaft 3 ... Control device 30 ... Inverter circuit 31 ... Field circuit 32 ... Control circuit 4 ... Inverter case 40 ... Arc wall 42 ... Convex walls 42a, 42b ... Wall surface 42c ... Tip wall 5 ... Heat sink 50 ... Inverter circuit heat sink 51 ... Control circuit heat dissipation Plate 6 ... Connector 7 ... Power supply terminal 9 ... Battery

Claims (6)

An AC motor that has a rotating shaft and generates rotational driving force by being supplied with AC power, an inverter circuit that converts DC power into AC power and supplies the AC motor, and a control circuit that controls the inverter circuit A control means disposed adjacent to the axial direction of the AC motor, an inverter case comprising an outer peripheral wall surrounding the control means and extending in the axial direction, and fixing the control means and generating the control means A heat dissipating plate for dissipating heat, an external terminal disposed on the outer peripheral wall of the inverter case and connected to the control means and for exchanging signals with at least the outside, and an outer peripheral wall of the inverter case And a power supply terminal connected to the control means for supplying DC power. The AC motor has the rotating shaft arranged in a direction parallel to the axle. In the control unit integrated AC motor mounted on both,
Furthermore, the external terminal and the power supply terminal are disposed on the vehicle rear side from the foremost end portion on the vehicle front side of the inverter case and on the vehicle front side from the rear end portion on the vehicle rear side. Control unit integrated AC motor.   2. The control according to claim 1, wherein the external terminal and the power supply terminal are disposed on the outer peripheral wall of the inverter case that is below the uppermost end portion and above the lowermost end portion of the inverter case. Means integrated AC motor.   The inverter case has an arcuate arc wall having an opening angle larger than 180 °, and a height from the lowermost end to the uppermost end protruding from the vehicle front side or the vehicle rear side, the height from the lowermost end of the arcuate wall to the uppermost end. And the external terminal and the power supply terminal are disposed on at least one of the upper wall surface and the lower wall surface of the convex wall of the inverter case. 3. The control means integrated AC motor according to claim 2, wherein:   The external terminal is disposed on either the upper wall surface or the lower wall surface of the convex wall of the inverter case, and the power terminal is the upper wall surface or the lower wall surface of the convex wall of the inverter case. 4. The control means-integrated AC motor according to claim 3, wherein the AC motor is integrated with a wall surface on which no external terminal is provided.   5. The control means integrated AC motor according to claim 3, wherein the inverter case houses the control circuit of the control means in a space surrounded by the convex wall.   The heat dissipation plate fixes the control circuit and dissipates the generated heat, and the inverter circuit heat dissipation plate separates the control circuit heat dissipating plate and fixes the inverter circuit and dissipates the generated heat. 6. The control means integrated AC motor according to claim 5, comprising:

Images